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1Author    Lothar Ohse, Wolfgang BrocknerRequires cookie*
 Title      
 Abstract    Molecular Vibration Analysis of the Hexathiometadiphosphatanion P2Sl~~ A normal coordinate analysis for the Hexathiometadiphosphate anion P2Sj;~ was performed, based on a simple initial force field. The force field was refined by adjusting the symmetry force constants to approximate the observed frequencies. The final force field, potential energy distribu­ tion (PED) and mean amplitudes of vibration are also given. Based on the normal coordinate analysis a new assignment of the P2Sg~ frequencies is proposed. S c h w in g u n g s b e re c h n u n g e n d e s H e x a th io m e ta d ip h o s p h a ta n io n s P 2Sö 
  Reference    Z. Naturforsch. 43a, 494—496 (1988); eingegangen am 22. März 1988 
  Published    1988 
  Keywords    P2Sg~, Vibration Spectrum, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_A/43/ZNA-1988-43a-0494.pdf 
 Identifier    ZNA-1988-43a-0494 
 Volume    43 
2Author    Thomas SchönherrRequires cookie*
 Title    Zur Existenz diskreter TeCl 5 -Ionen On the Existence of Discrete TeCl s ~ Ions  
 Abstract    Discrete mononuclear TeCl 5 " anions were prepared for the first time in solid phase in associa-tion with bulky cations as tetrabutylammonium and tetraphenylphosphonium. The vibrational spectra imply tetragonal symmetry as for the isoelectronic TeF 5 ~ anion which is caused by a stereochemically active lone pair. A complete vibrational assignment is given and supported by a normal coordinate treatment for both ions. The significance of the resulting force constants is briefly discussed. 
  Reference    Z. Naturforsch. 43b, 159—164 (1988); eingegangen am 10. August/21. September 1987 
  Published    1988 
  Keywords    Pentahalogenotellurates, Vibrational Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0159.pdf 
 Identifier    ZNB-1988-43b-0159 
 Volume    43 
3Author    M. Parensen, W. Brockner, B. N. Cyvin, S. J. CyvinRequires cookie*
 Title    Schwingungsspektren und Normalkoordinatenanalyse des P2Se^_-Anions in den konformeren staggered-und eclipsed-Anordnungen in TL^Se** und Na4P2Se6  
 Abstract    Na4P2Se6 has been prepared by elemental synthesis at high temperatures and characterized by vibrational spectroscopy. The vibrational frequencies of Na4P2Se6 are assigned on the basis of eclipsed P2Se6_ conformers with D3h symmetry, those of Tl4P2Se6 on the basis of staggered P2Se£-units with D3d symmetry. A normal coordinate analysis has been performed for both conformers. The refined force field, potential energy distribution (PED), mean amplitudes of vibration an Coriolis coupling constants are given. 
  Reference    Z. Naturforsch. 41a, 1233—1237 (1986); eingegangen am 5. Juli 1986 
  Published    1986 
  Keywords    Tl4P2Se6, Na4P2Se6, Vibration Spectra, Normal Coordinate Analysis, Conformation Isomery Vibrational Spectra 
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 TEI-XML for    default:Reihe_A/41/ZNA-1986-41a-1233.pdf 
 Identifier    ZNA-1986-41a-1233 
 Volume    41 
4Author    L. Ohse, M. Somer, W. BrocknerRequires cookie*
 Title     
 Abstract    c h w in g u n g s b e re c h n u n g e n d e r k ä f i g s tr u k t u r i e r t e n M o le k ü le a -P 4S 4 , A s 4S 4 u n d A s 4S e 4 Molecular Vibration Analysis of the cage-like Molecules tx-P^S^, ,4s4S4, and As^Se^ A normal coordinate analysis for the cage-like molecules a-P4S4, As4S4 and As4Se4 is performed, based on a simple initial force field with three numerical parameters and valence coordinates including redundancies. The force field is refined by adjusting the symmetry force constants to fit the observed frequencies. The final force field, potential energy distribution (PED), mean amplitudes of vibration and the standard thermodynamic functions from spectroscopic data are also given for the title compounds. 
  Reference    Z. Naturforsch. 43a, 326—330 (1988); received February 3 1988 
  Published    1988 
  Keywords    a-P4S4, As4S4, As4Se4, Vibration Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_A/43/ZNA-1988-43a-0326.pdf 
 Identifier    ZNA-1988-43a-0326 
 Volume    43 
5Author    G. KlicheRequires cookie*
 Title    L a ttic e  
 Abstract    V ib r a tio n s o f th e C o o p e rite s P d O a n d P t S The vibrational spectra of the cooperite type compounds PdO and PtS (space group P42/mmc — D4h, Z = 2) are analyzed. Good agreement between experimental and calculated lattice vibration frequencies is obtained using a force field which includes short-range force constants only. This demonstrates a highly covalent bonding character of the cooperites. 
  Reference    Z. Naturforsch. 44a, 169—172 (1989); received December 3 1988 
  Published    1989 
  Keywords    Vibrational spectra, normal coordinate analysis, force constants, cooperite-type com­ pounds 
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 TEI-XML for    default:Reihe_A/44/ZNA-1989-44a-0169.pdf 
 Identifier    ZNA-1989-44a-0169 
 Volume    44 
6Author    K. Irmer, W. PreetzRequires cookie*
 Title    Normalkoordinatenanalyse an Oktaederkomplexen des  
 Abstract    Typs [MXW Y6_ J z", M = Ru, Rh, Os, Ir, Pt; X # Y = F, Cl, Br; n = 0 -6 ; z = 1 -3 Normal Coordinate Analysis on Octahedral Complexes of the Type [MX"Y6_ " r , M = Ru, Rh. Os, Ir, Pt; X # Y = F, Cl, Br; n = 0 -6 ; z = 1 -3 Normal coordinate analyses for all com pounds o f the series [MX"Y6_Jr~, M = Ru, Rh. Os, Ir, Pt; X Y = F, Cl, Br; n = 0 -6 ; z = 1 -3 , including the geometric isomers for n = 2, 3, 4 have been performed, based on a general valence force field. For the isostructural species o f the point symmetries Oh (n -0, 6), D 4h (2, 4, trans), C4v (1, 5), C3v (3,fac), C2v (2, 4, cis\ 3, mer) sequences o f decreasing frequencies are established. Due to the different trans influences X < Y (F < Cl < Br) in asymmetric axes X ' -M -Y ' , the M -Y ' bonds are strengthened and the M -X ' bonds are weakened, as indicated by valence force constants for M -Y' up to 21 % high­ er (P t-C l'), for M -X ' down to 18% lower (P t-F '), as compared with the values calculated for symmetrical X -M -X and Y -M -Y axes, respectively. The influence o f the different central ions and their oxidation numbers on the force field is discussed. 
  Reference    Z. Naturforsch. 46b, 1200—1206 (1991); eingegangen am 12. April 1991 
  Published    1991 
  Keywords    Normal Coordinate Analysis, Force Constants, /rans-Influence, Mixed-Ligand Complexes 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1200.pdf 
 Identifier    ZNB-1991-46b-1200 
 Volume    46 
7Author    J. Skowronek, W. Preetz, S. M. JessenRequires cookie*
 Title    Darstellung, Schwingungsspektren und Normalkoordinatenanalyse der Acetatochloroditechnetate(III)  
 Abstract    , cis-T ^ C ^ C C F ^ C ^ I^ (L = axiale Donorbase) sowie Kristallstruktur von a s-T c2(0 2CCH3)2Cl4((CH3)2NC0CH3)2 Preparation, Vibrational Spectra and Norm al C oordinate Analysis o f Acetatochloroditechnetates(III), c« -T c2(0 2C CH 3)2C14L2 (L = Axial Donorbase) and the Crystal Structure of ds-Tc2(0 2C CH 3)2Cl4((CFI3)2N C 0C FI3)2 Tc2(0 2C C H 3),C l4(H 20)2 has been prepared by reaction o f [Tc2C18]2" with acetic anhydride and fluoroboric acid. By treatment with the donor bases L = N ,N-dim ethylform am ide (D M F), N ,N-dim ethylacetam ide (D M A A), dimethylsulfoxide (D M SO), triphenylphosphin-oxide (TPO) and pyridine (Py), the green adducts Tc2(0 2CCH3)2Cl4L2 are formed. The structure o f T c,(O .C C H 3),C l4(D M A A), was determined by X-ray diffraction; space group C 2/c with a = 29.604(4), b = 10.895(2), c = 14.404(2) Ä, ß = 97.87(2)°, Z = 8, /?w = 2.7% . The T c -T c distance is 2.1835(7) Ä , the bridging acetate groups are in c/s-positions. The IR and Raman spectra have been recorded at 80 K and assigned according to point group C-,v, supported by a normal coordinate analysis o f Tc2(0 2C C H 3)2C14(D M A A)2 based on a general valence force field. The stretching interaction constant fd(TcTc) is determined to 3.38 m dyn/Ä. With in­ creasing donor strength o f the axial ligands, the intense Raman vibration v(TcTc), showing up to three overtones, is lowered from 311 to 282 cm *1. The <5-<5* transitions o f all adducts are observed at 6 4 8 -6 5 2 nm. 
  Reference    Z. Naturforsch. 46b, 1305—1314 (1991); eingegangen am 4. März 1991 
  Published    1991 
  Keywords    Diacetatotetrachloroditechnetate(III) Adducts, Synthesis, Crystal Structure, Vibrational Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1305.pdf 
 Identifier    ZNB-1991-46b-1305 
 Volume    46 
8Author    M. =. Re, Tc, X. =. Ci, BrJ. Skowronek, W. PreetzRequires cookie*
 Title    Schwingungsspektren und Normalkoordinatenanalyse der Acetatohalogenodimetallate M 2( 0 2CCH3)4X2, M = Re, Tc; X = CI, Br Vibrational Spectra and Norm al Coordinate Analysis of Acetatohalogenodim etalates M 2( 0 2C CH 3)4X  
 Abstract    The orange-red Tc2(0 2C C H 3)4Br2 has been prepared for the first time by reaction of [Tc2Brg]2_ with glacial acetic acid and acetic anhydride. The IR and R am an spectra have been recorded at 80 K and are compared with those of the analogous com pounds Tc2(0 2CC H 3)4C12, Re2(0 2C C H 3)4Cl2 and Re2(0 2CC H 3)4Br2. The assignment according to the point group D 4h is supported by normal coordinate analysis based on a general valence force field. The quadruple M -M bond is stabilized by the bridging acetato and destabilized by the axial halogeno ligands. The valence force constants fd(MM) are determined to 3,96-4,08 mdyn/A. The inter­ action constants fdd(M M /M X), fdd(M M /M O) and fJM M /M M O) are ab o u t three times high­ er for the technetates as compared with the rhenates. The stronger interaction between oppo­ site bonds in the equatorial ligand sphere is revealed by the stretching interaction constants d d '' which are about two times higher than fdd for M -O bonds at right angles. The strong coupling of the ring co-ordinates implies extensive mixing of the M -O valence and deform ation modes. The electronic spectra of Tc2(0 2CC H 3)4X, agree with those of the corresponding Re com ­ pounds. 
  Reference    Z. Naturforsch. 47b, 482—490 (1992); eingegangen am 10. Oktober 1991 
  Published    1992 
  Keywords    Tetraacetatodihalogenodirhenates, Tetraacetatodihalogenoditechnetates, Vibrational Spectra, UV-Vis Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0482.pdf 
 Identifier    ZNB-1992-47b-0482 
 Volume    47 
9Author    P. H. Ollm, Ann, W. PreetzRequires cookie*
 Title    [Ir2Cl10]2  
 Abstract    , und Normalkoordinatenanalyse an Dioktaederkomplexen des Typs IM2X1012", M = Re, Os, Ir, Pt; X = CI, Br Preparation and Characterization of Decachlorodiiridate(IV), [Ir2C l10]2-, and Normal Coordinate Analysis of Bioctahedral Complexes [M2X 10]2", M = Re, Os, Ir, Pt; X = CI, Br On heating the tetraethylammonium salt o f [IrCl6]2-with trifluoroacetic acid the edge shar­ ing bioctahedral anion [Ir2C l10]2' is formed, the IR and Raman spectra o f which are assigned according to point group D 2h. Norm al coordinate analyses, based on a general valence force field, for [M2X 10]2-, M = Re, Os, Ir, Pt; X = Cl, Br have been performed, resulting in a good agreement o f the calculated frequencies with the bands observed in the IR and Raman spectra. Due to the stronger bonding o f the terminal as compared to the bridging ligands, the valence force constants fd(M X t) are significantly higher than fd(M X b). Darstellung und Charakterisierung von Dekachlorodiiridat(IV), 
  Reference    Z. Naturforsch. 47b, 1115—1118 (1992); eingegangen am 8. April 1992 
  Published    1992 
  Keywords    Decachlorodiiridate(IV), Raman Spectra, IR Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1115.pdf 
 Identifier    ZNB-1992-47b-1115 
 Volume    47 
10Author    D. Bublitz, A. Franken, W. Preetz, H. ThomsenRequires cookie*
 Title    Darstellung, U B-NMR-Spektren, Schwingungsspektren und Normalkoordi- natenanalyse von cowy'HWcto-Bis-hexahydro-c/oso-hexaborat, [B6H6-B 6H6]2_, sowie Kristallstruktur von [P(C6H5)4 ]2-cöW7 ww^o-[B6H6-B 6H6 ] Preparation, 11B NMR Spectra, Vibrational Spectra and Normal Coordinate Analysis of con ju ncto-B is-h exah ydro-closo-h exaboratQ , [B6H6-B 6H6]2_, and the Crystal Structure of [ P(C6 H5 )4 ] 2 -conjuncto-[B6 H6-B 6 H6 ]  
 Abstract    By reaction of [B6H6]2-with dibenzoylperoxide in dichloromethane conjuncto-[B6H6-b 6h 6]2-is formed. The product could be separated from excess [B6H6]2 by ion exchange chro­ matography on diethylaminoethyl cellulose. The crystal structure of [P(C6H^ ^ -con ju n cto-[B6H6-B 6H6 ] has been determined by single crystal X-ray diffraction analysis; triclinic, space group PI with a = 10.8315(10), b = 11,2422(12), c = 20.340(2) Ä, a = 91.278° (9), ß = 9 0 .\78° (9), 7 = 105.662°(9). The 1 'B NMR spectrum reveals three signals with the intensity ratio 1:1:4, for two equivalent moieties of the conjuncto molecule ion with local C4v symmetry. The IR and Raman spectra of the deprotonated Cs salts of the 1()B, n B and their respective D isotopomers of conjuncto-[B6H5-B6HS]4_ exhibit characteristic shifts. Using averaged crystallographic data and assuming idealized D4h symmetry, normal coordinate analyses have been performed based on a modified valence force field. With a set of eleven force constants (e.g. fd(BB)C 0njU IK.t0 = 2.9, fd(BB)cage = 1.6 mdyn/A) very good agreement between observed and calculated frequencies has been achieved. From strong vibrational coupling with the B6 clusters two vibrations result for the conjuncto B-B bond at 1142/1198 and 292/304cm-1 for 1 'B/I(IB species, respectively. They can be assigned as anti-phase and in-phase motions of the conjuncto B atoms related to the equatorial B4 planes. 
  Reference    Z. Naturforsch. 51b, 609—618 (1996); eingegangen am 7. September 1995 
  Published    1996 
  Keywords    Crystal Structure, n B NMR Spectra, Vibra­ tional Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0609_n.pdf 
 Identifier    ZNB-1996-51b-0609_n 
 Volume    51 
11Author    X. =. Cl, I. V. Br, W. Lorenzen, PreetzRequires cookie*
 Title    Kristallstrukturen von Oi-Bu4N)  
 Abstract    [B6C16], (w-Bu4N)[B6Br6] und (Ph3P=N=PPh3)[B6I6] sowie Schwingungsspektren und Normal-koordinatenanalyse der Hexahalogeno-c/osö-Hexaboratradikal-anionen [B6X6]~, X = Cl, Br, I Crystal Structures of («-Bu4N)[B6C16], (rc-Bu4N)[B6Br6], and (Ph3P=N=PPh3)[B6I6], and Vibrational Spectra and Normal Coordinate Analysis of the Hexahalogeno-c/oso-hexaborate Radical Anions [B6X6]-, Oxidation of hexahalogeno-c/oso-hexaborates [B6X6]2_, X = Cl, Br, I, with (NH4)2[Ce(N03)6] in ethanol yields coloured radical ions [B6X6]~. X-ray structure determina­ tions have been performed on single crystals of («-Bu4N)[B6Cl6] (1) (monoclinic, space group P2,/c,a = 13.144(2),6 = 12.594(2),c = 17.688(5) A,ß = 107.29(2)°,Z=4),(«-B u4N)[B6Br6] (2) (monoclinic, space group P2,/c, a = 13.529(5), b = 13.096(5), c = 17.863(5) Ä, ß = 107.20(5)°, Z = 4) and (Ph3P=N=PPh3)[B6I6] (3) (triclinic, space group P I, a = 9.3137(8), b = 10.6988(10), c = 11.8760 A, a = 102.220(7), ß = 99.34J(8), 7 = 96.030(7)°, Z = 1). The average B-B distan­ ces are nearly equal (1.733 Ä (1), 1.728 A (2), 1.728 A (3)) while the B-X distances increase (1.762 A (1), 1.912 A (2), 2.120 A (3)). Using the molecular parameters, normal coordinate analyses have been performed and a good agreement of observed and calculated frequencies of 11B and 1 'B labelled derivatives has been achieved. The valence force constants fd(BB) and fd(BX) of [B6X6]" are 1.17 and 4.17 (X = Cl), 1.18 and 3.34 (Br) and 1.18 and 2.60 mdyn/A (I), respectively. 
  Reference    Z. Naturforsch. 52b, 565—572 (1997); eingegangen am 19. Februar 1997 
  Published    1997 
  Keywords    Hexahalogenohexaborates( 1 -), Crystal Structure, Vibrational Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0565.pdf 
 Identifier    ZNB-1997-52b-0565 
 Volume    52 
12Author    J. Thesing, J. Baurmeister, W. Preetz, D. Thiery, H. G. Von SchneringRequires cookie*
 Title    Kristallstrukturen  
 Abstract    von [P(C6H 5)4 l2 lB6Cl6](CH3CN) 2 und |P(C 6H 5)4]2 lB6Br6](CH3CN) 2 sowie Schwingungsspektren und Normalkoordinatenanalyse der isotopomeren c/osö-Hexahalogenohexaborate |"B",#B6-Ä I 2' , X = Cl, Br; n = 0 -6 Crystal Structures o f [P(C6H 5)4]2[B6C16](C H ,C N)2 and [P(C6H s)4]2[B6Br6](CH3CN)2, Vibrational Spectra and Norm al C oordinate Analysis of Isotopomeric cVavo-Hexahalogenohexaborates [n B"10B6_/?X6]2", X = Cl, Br; n = 0 -6 The crystal structures o f (TPP)2[B6C16](CH3CN)2 and (TPP)2[B6Br6](CH3CN)2 were deter­ mined from single crystal X-ray diffraction analyses at 147 K. They are triclinic, space group P I, and contain nearly regular octahedral anions with bond lengths d (B -B) 1.716, d (B -C l) 1.818 for [B6C16]2" and d (B -B) 1.684, d (B -B r) 1.993 A for [B6Br6]2~. Using these molecular data, norm al coordinate analyses for the ten isotopomers [n Bnl0B6_nX6]2", n = 0 -6 , X = Cl, Br, including the pairs of geometric isomers for n = 2, 3, 4 have been performed, based on a general valence force field. W ith a set of 8 force constants for Cs2[B6Br6] (e.g. fd(BB) = 1.39, fd(BBr) = 3.18 mdyn/Ä) and 10 for Cs2[B6Cl6] (e.g. fd(BB) = 1.30, fd(BCl) = 4.01 mdyn/Ä) the calculated frequencies are in good agreement with observed IR (10 K) and Raman bands (80 K) in natural abundance as well as for "B-and l0B-enriched derivatives. For the series [B6X6]2", X = Cl, Br, I the correlation of decreasing bond lengths d(B -B) and increasing force constants fd(BB) along with vibrational coupling between the B6 cage and the substituent sphere is discussed. 
  Reference    Z. Naturforsch. 46b, 800—808 (1991); eingegangen am 6. Dezember 1990 
  Published    1991 
  Keywords    H exachlorohexaborate(2-), H exabrom ohexaborate(2-), Crystal Structure, Normal Coordinate Analysis, Isotopomers 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0800.pdf 
 Identifier    ZNB-1991-46b-0800 
 Volume    46 
13Author    W. Preetz, B. SteuerRequires cookie*
 Title    Darstellung, Schwingungsspektren und Normalkoordinatenanalyse der 10B-und n B-Isotopomeren von [B2(NCS)6]2_ sowie Kristallstruktur von (Ph3P=N=PPh3)2[B2(NCS)6]  
 Abstract    By reaction of [B6H 6]2_ with a solution of (SCN)2 in dichloromethane in the presence of solid KOH the hexaisothiocyanatodiborate anion [B2(NCS)6]2~ is formed and can be isolated by fractionated crystallization. The crystal structure of (PNP)2[B2(NCS)6] has been determ i­ 
  Reference    Z. Naturforsch. 51b, 551—556 (1996); eingegangen am 11. August 1995 
  Published    1996 
  Keywords    H exaisothiocyanatodiborate(2-), Crystal Structure, Vibrational Spectra, Isotopomers, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0551.pdf 
 Identifier    ZNB-1996-51b-0551 
 Volume    51 
14Author    H.-H Drews, W. PreetzRequires cookie*
 Title    Darstellung, 19F-und 195Pt-NMR-Spektren, Schwingungsspektren und Normalkoordinatenanalyse von Fluoro-Chloro-Bromo-Platinaten(IV) Preparation, l9F and 195Pt NMR Spectra, Vibrational Spectra and Normal Coordinate Analysis of Fluoro-Chloro-Bromo-Platinates(IV)  
  Reference    Z. Naturforsch. 51b, 1563—1570 (1996); eingegangen am 2. August 1996 
  Published    1996 
  Keywords    Fluoro-Chloro-Bromo-Platinates(IV), l9F NMR Spectra, 195Pt NMR Spectra, Vibrational Spec­ tra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1563.pdf 
 Identifier    ZNB-1996-51b-1563 
 Volume    51 
15Author    K. Dallmann, W. PreetzRequires cookie*
 Title    Kristallstrukturen, Schwingungsspektren und Normalkoordinaten- analysen von cis-und ^rans-[OsX2(acac)2], X = Cl, Br, I Crystal Structures, Vibrational Spectra and Normal Coordinate Analyses of cis-and rrarcs-[OsX2(acac)2l, X = Cl, Br, I  
 Abstract    The crystal structures of frans-tOsCM acac)?] (triclinic, space group P i, a = 7.4114(5), 
  Reference    Z. Naturforsch. 52b, 965—974 (1997); eingegangen am 12. Mai 1997 
  Published    1997 
  Keywords    Crystal Structure, IR Spectra, Raman Spectra, Normal Coordinate Analysis, trans Influence 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0965.pdf 
 Identifier    ZNB-1997-52b-0965 
 Volume    52 
16Author    J. Seemann, W. PreetzRequires cookie*
 Title    Schwingungsspektren und Normalkoordinatenanalyse von Hexathiocyanatoplatinat(IV), Kristallstruktur von [Py2CH2][Pt(SCN)6] Vibrational Spectra and Normal Coordinate Analysis of Hexathiocyanatoplatinate(IV), Crystal Structure of [Py2CH2][Pt(SCN)6]  
 Abstract    By treatment of [PtCl6]2-with an excess of SCN~ in aqueous solution [Pt(SCN)6]2~ is formed. The X-ray structure determination on a single crystal of [Py2CH2][Pt(SCN)6] (orthor-hombic, space group Pna21? a = 15.5084(9), b = 11.8444(11), c = 13.2830(9)A, Z = 4) shows, that the thiocyanate groups are exclusively S-coordinated with average Pt-S distances of 2.378 A and Pt-S-C angles in the range from 103.1° to 108.1°. Based on the molecular parameters of the X-ray determination the low temperature (10 K) IR and Raman spectra have been assigned by normal coordinate analysis. The valence force constant is fd(PtS) = 1.62 mdyn/A. 
  Reference    (Z. Naturforsch. 53b, 13—16 [1998]; eingegangen am 15. Oktober 1997) 
  Published    1998 
  Keywords    Hexathiocyanatoplatinate(IV), IR Spectra, Raman Spectra, Normal Coordinate Analysis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0013.pdf 
 Identifier    ZNB-1998-53b-0013 
 Volume    53 
17Author    K. Dallmann, W. PreetzRequires cookie*
 Title      
 Abstract    Normalkoordinatenanalyse von [Os(acac)3] Synthesis, Crystal Structure, Vibrational Spectra, and Normal Coordinate Analysis o f [Os(acac)3] In the reaction o f K 2[O sCl6] with boiling water/acetylacetone (1:1) a mixture o f different chloro-acetylacetonato complexes is formed, from which [Os(acac)3] can be isolated by column chromatography with dichloromethane on silica gel. The crystal structure o f [Os(acac)3] (m o­ noclinic, space group P2,/c,a = 13.968(5), b = l . 517(5), c = 16.455(5) A ,ß = 98.939(5)°, Z = 4) has been determined by single crystal X-ray diffraction analysis. High resolution IR and Raman spectra were measured at low temperature (10 K). Based on the molecular parameters o f the X-ray structure determination a normal coordinate analysis has been performed and the normal modes o f vibration have been assigned. With a set o f 32 force constants, taking into account the intraligand vibrations, a good agreement between observed and calculated frequencies has been achieved. The valence force constants are fd(OsO) = 3.19 and fd(O C) = 6.74 mdyn/A. 
  Reference    Z. Naturforsch. 53b, 232—238 (1998); eingegangen am 26. November 1997 
  Published    1998 
  Keywords    Tris(acetylacetonato)osmium(III), Crystal Structure, IR Data, Raman Data, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0232.pdf 
 Identifier    ZNB-1998-53b-0232 
 Volume    53 
18Author    V. Lorenzena, W. Preetz, W. Kellerb, W. HauboldRequires cookie*
 Title    Schwingungsspektren und Normalkoordinatenanalyse der Tetrahalogeno-c/os0-l,2-diphosphahexaborane P2B4X4, X = CI, Br Vibrational Spectra and Normal Coordinate Analysis of the Tetrahalogeno-c/oso-l,2-diphosphahexaboranes P2B4X 4, X = Cl, Br  
  Reference    Z. Naturforsch. 54b, 1229—1234 (1999); eingegangen am 10. August 1999 
  Published    1999 
  Keywords    Tetrahalogeno-c/aso-1, 2-diphosphahexaboranes, Vibrational Spectra, Normal Coordinate Analyses, Force Constants 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1229.pdf 
 Identifier    ZNB-1999-54b-1229 
 Volume    54 
19Author    W. PreetzRequires cookie*
 Title    Kristallstrukturen  
 Abstract    , Schwingungsspektren und Normalkoordinatenanalyse von (Ph3PNPPh3)[O sF5C l] CH2Cl2 und cis-(Ph3PNPPh3)[OsF4C\2]C H 2Ch Crystal Structures, Vibrational Spectra and N orm al C oordinate A nalysis o f (Ph3P N PP h3) [O sF5Cl] C H 2C12 and ris-(P h 3PN PPh3)[O sF4C l2]-CH2C l2 B. L orenzen By careful oxidation of the pure fluorochloroosmates(IV) with BrF3 in dichloromethane the mixed pentavalent complex anions [OsF5C1]_ and m -[O sF 4Cl2] _ are formed. X-ray structure determinations on single crystals have been performed of (Ph3PNPPh3)[OsF5C l]C H 2Cl2 (1) (triclinic, space group P i, a = 12.153(5), b = 12.387(5), c = 14.229(5) A , a = 70.07(1), ß = 65.46(1), 7 = 72.87(1)°, Z = 2) and ds-(P h 3PNPPh3)[OsF4Cl2] C H 2Cl2 (2) (triclinic, space group P i, a = 11.987(2) b = 13.083(2), c = 14.456(2) A , a = 66.30(1), ß = 65.47(1), 7 = 71.22(1)°, Z = 2). Based on the molecular parameters of the X-ray determinations the IR and Raman spectra for the anions of 1 and 2 have been assigned by normal coordinate analysis. Due to the mutual trans influences the valence force constants of asymmetrically coordinated octahedral axes F*-Os-Cl' differ from those of the symmetric F-Os-F axes. The data are for 1: fd(OsF*) = 3.95, fd(OsF) = 4.07, fd(OsCl') = 2.51 and for 2: fd(OsF*) = 3.45, fd(OsF) = 3.97, fd(OsCl') = 2.42 mdyn/A. 
  Reference    (Z. Naturforsch. 55b, 45—50 [2000]; eingegangen am 9. November 1999) 
  Published    2000 
  Keywords    Pentachlorofluoroosmate(V), ds-Tetrachlorodifluoroosmate(V), Crystal Structure, Vibrational Spectra, Normal Coordinate Analyses 
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 Identifier    ZNB-2000-55b-0045 
 Volume    55 
20Author    S. J. Cyvin, B. N. Cyvin, C. Wibbelmann, R. Becker, W. Brockner, M. ParensenRequires cookie*
 Title    Synthesis, Vibrational Spectra and Normal Coordinate Analysis of Cesium-Hexathiohypodiphosphate CS4P2S6  
 Abstract    The title compound has been prepared by elemental synthesis at high temperatures and also by reaction of Na 4 P 2 S 6 • 6 H 2 0 with CsCl in aqueous solution. Both reaction products have closely related vibrational spectra which are assigned on the basis of a P 2 Sg anion with perturbed D 3d symmetry. A normal coordinate analysis has been performed using a force Field with 4 initial force constants. The refined force Field, potential energy distribution (PED), mean amplitudes of vibration and Coriolis coupling constants are given. 
  Reference    Z. Naturforsch. 40a, 709—713 (1985); received May 3 1985 
  Published    1985 
  Keywords    Cesiumhexathiohypodiphosphate, Cs 4 P 2 S 6, Vibration Spectra, Normal Coordinate Analysis 
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 TEI-XML for    default:Reihe_A/40/ZNA-1985-40a-0709.pdf 
 Identifier    ZNA-1985-40a-0709 
 Volume    40 
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