Go toArchive
Browse byFacets
Bookbag ( 0 )
'IR Spectra' in keywords
Results  150 Items
Sorted by   
Publication Year
2001 (1)
1998 (1)
1997 (5)
1996 (3)
1995 (2)
1994 (5)
1993 (2)
1992 (7)
1991 (6)
1990 (4)
21Author    Ekkehard Lindner, Robert SpeidelRequires cookie*
 Title    Neuartige basische Liganden für die homogenkatalytische Methanolcarbonylierung, XXI [1] Synthese und Eigenschaften von (Ether-Phosphan)-Platin-Komplexen Novel Basic Ligands for the Homogenous Catalytic Methanol Carbonylation, XXI [1] Synthesis and Properties of (Ether-Phosphane) Platinum Complexes  
 Abstract    The (ether-phosphane) complexes m -C l2Pt(Ph: P ~ D)2 (2a, b) [D = C H 2C4H 70 (a). C H 2C4H 70 2 (b)] are obtained by reaction of Ph2P ~ D (la , b) with either K2PtCl4 or Cl2Pt(CO D) (C O D = 1,5-cyclooctadiene). Both Cl ^anions are abstracted from 2a, b using A gSbF(1 to give the cationic bischelate complexes [Pt(Ph2P D)2][SbFh]2 (5a, b). The stepwise cleavage and reform a­ tion of Pt —O bonds in (ether-phosphane) platinum complexes is dem onstrated bv the sequence 5a —> [rä -(P h 2P D)(Ph2P ~D)P tC l][S bF 6] (6 a) -* [rra«5-(Ph2P ~ D)2PtC O (C l)][SbF6] (7 a) -* 5a, when 5a, 6 a, and 7a are reacted with KC1. CO, and AgSbF,,, respectively. Reduction of 2a with N aB H 4 results in the form ation of rra/2s-H 2Pt(Ph2P ~ D)2 (4a). In the presence of HC1 2a js re­ formed. Excess N aBH 4 or heating of 4a yields the bischelate platinum(O) complex Pt(P h: P D)2 (3a), which is also jso lated by reduction of 2a with sodium amalgam. A general method for obtaining P t(P h2P D)2 (3 a —c) [D = C H 2C H 2O C H , (c)] is the substitution of C O D in P t(C O D)2 by the ether-phosphanes l a —c. The structures and bonding properties of the com pounds 2 —7 are discussed on the basis of their 31P {1H } NMR and IR spectra. 
  Reference    Z. Naturforsch. 44b, 437—443 (1989); eingegangen am 20. D ezem ber 1988 
  Published    1989 
  Keywords    Ether-Phosphanes Platinum Complexes, 3iP {'H} NMR Spectra, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/44/ZNB-1989-44b-0437.pdf 
 Identifier    ZNB-1989-44b-0437 
 Volume    44 
22Author    Reiner Figge, Claus Friebel, U. Te Patt-Siebel, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    Nitridokomplexe von Molybdän(V); Synthesen, IR-und EPR-Spektren. Die Kristallstruktur von [Na(15-Krone-5)Na(THF)]2[MoNCI3 THF]4-2THF Nitrido Complexes of M olybdenum (V ); Syntheses, IR , and EPR Spectra. Crystal Structure of [N a(15-Crow n-5)N a(TH F)]2[MoNCl3-THF]4-2T H F  
 Abstract    Nitrido C om plexes o f M olyb denu m (V), 
  Reference    Z. Naturforsch. 44b, 1377—1384 (1989); eingegangen am 30. Mai 1989 
  Published    1989 
  Keywords    Syntheses, IR Spectra, EPR Spectra, Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/44/ZNB-1989-44b-1377.pdf 
 Identifier    ZNB-1989-44b-1377 
 Volume    44 
23Author    Michael Schäfer, Jürgen Pebler, Beatrice Borgsen, Frank Weller, K. Urt DehnickeRequires cookie*
 Title    21Sb-Mössbauer-spektroskopische und strukturchemische Untersuchungen an Kronenetherkomplexen SbX3(15-Krone-5) mit X = F, Cl, Br, I. Eine Analyse der Orbitalbesetzungszahlen 12lSb-M össbauer-Spectroscopic and Structural Investigations on Crown Ether Complexes SbX3(15-Crown-5) with X = F, Cl, Br, I. A Population Analysis Crown Ether C om plexes SbX3(15-crown-5)  
 Abstract    The crown ether complexes SbX3(15-crown-5) with X = F, Cl, Br, and I have been prepared by reactions o f 15-crown-5 with the corresponding antimony trihalides in acetonitrile solu­ tions. The com pounds were characterized by IR spectroscopy as well as by l21Sb-M össbauer spectroscopy. A m ethod o f orbital population analysis utilizing both M össbauer isomer shifts and quadrupole coupling has been developed for Sb(III) antimony halides and their crown ether com plexes. SbF 3(l 5-crown-5) was also characterized by an X-ray structure determination: Space group P 2 ,/«, Z = 4, 3628 observed unique reflexions, R = 0.032. Lattice dim ensions at 19 °C: a = 891.54(6), b = 1277.26(6), c = 1277.66(7) pm, ß = 95.029(4)3. The com plex has a molecular structure in which the antimony atom is surrounded by three F-atom s with mean bond lengths o f 192.4 pm and by the five oxygen atom s o f the crown ether molecule with mean bond lengths o f 293.9 pm. 
  Reference    Z. Naturforsch. 45b, 1243—1250 (1990); eingegangen am 5. März/9. Mai 1990 
  Published    1990 
  Keywords    Syntheses, IR Spectra, 12lSb-M össbauer Spectra, Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1243.pdf 
 Identifier    ZNB-1990-45b-1243 
 Volume    45 
24Author    Gabriele Schatte, Helge WillnerRequires cookie*
 Title    Die Wechselwirkung von N 3F mit Lewis-Säuren und HF. N 3F als möglicher Vorläufer für die Synthese von N 3+-Salzen The Interaction of N 3F with Lewis-Acids and HF. N 3F as Possible Precursor for the Synthesis of N 3+ Salts  
 Abstract    Triazadienyl fluoride, N 3F, forms stable adducts with BF3 and AsF5 at low temperatures, as demonstrated by infrared measurements. The Lewis acids are bonded to the Na-atom of N 3F, as deduced from the data for 15N-isotopically enriched N 3F. The basicity of N 3F is comparable to that of ethine and ethene, according to the HF stretching frequency of the N 3F/HF complex isolated in an argon matrix. Despite the low NF bond energy (<150 kJ/mol), abstraction of the fluoride ion and formation of an N 3+ salt was not possible. The different behavior of N 3F and C1N3 towards Lewis acids is discussed. 
  Reference    Z. Naturforsch. 46b, 483—489 (1991); eingegangen am 3. September 1990 
  Published    1991 
  Keywords    Triazadienyl Fluoride, IR Spectra, Lewis Acids, Proton Affinity 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0483.pdf 
 Identifier    ZNB-1991-46b-0483 
 Volume    46 
25Author    Rolf Minkwitz, Volker Gerhard, FrauRequires cookie*
 Title    Über Dimethylhaloniumsalze -CH3C1CH3+M F6 , CH3BrCH3+M F6 , CH3ICH3+MF6" -und Dimethylmethylendiiodoniumsalze CH3ICH2ICH32+(M F6 )2 (M = As, Sb)  
 Abstract    The dimethylhalonium salts (C H 3)2X +A~ (X = Cl, Br, I; A " = A sF 6-, SbF6~, Sb2F n ~) are synthesized by methylation o f the corresponding methylhalides C H 3X or dihalomethanes C H 2C12 and CH2Br2 in the system S 0 2/C H 3F /M F 5. The analogous reaction o f C H 2I2 results in the formation o f dimethylmethylendiiodonium hexafluorometallates C H 3IC H ,IC H 32+(M F 6")2 (M = As, Sb). The salts are characterized by Raman-, IR-and N M R-spectroscopy. 
  Reference    Z. Naturforsch. 46b, 561—5 (1991); eingegangen am 21. Juni 1990 
  Published    1991 
  Keywords    Preparation, Raman Spectra, IR Spectra, N M R Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0561.pdf 
 Identifier    ZNB-1991-46b-0561 
 Volume    46 
26Author    R. Olf Minkwitz, VolkerG. ErhardRequires cookie*
 Title    Über die Reaktionen der Halogene Cl2, Br2 und I2 mit CH3O S O +M F6 (M = As, Sb)  
 Abstract    Chlorine reacts with C H 3O SO +M F6" (M = As, Sb) at 298 K to form AsC14 +A sF 6" and SbCl4 +Sb2Cl2F9~, respectively. The analogous reactions with bromine at 233 K result in the formation o f (C H 3)2 Br+A sF 6~ and Sb2F,,~. With iodine, the new methyliodonium salts (C H 3 I2)n"+(M F 6~)n (M = As, Sb) with yet unknown constitution are obtained. 
  Reference    Z. Naturforsch. 46b, 1470—1472 (1991); eingegangen am 11. März 1991 
  Published    1991 
  Keywords    Preparation, IR Spectra, N M R Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1470.pdf 
 Identifier    ZNB-1991-46b-1470 
 Volume    46 
27Author    Rene Wollert, SigridW. Ocadlo, K. Urt Dehnicke, Helmut Goesmann, Dieter FenskeRequires cookie*
 Title    Die Kristallstrukturen von (PPh4)2 [TiCl3 (NSiMe3) ] 2 * CH3CN und (PPh4)2 [TiCl4(OSPCl2) ] 2 The Crystal Structures of (PPh4)2[TiCl3(NSiM e3)]2 -C H 3CN and (PPh4)2[TiCl4(OSPCl2)]2  
 Abstract    (PPh4)2[TiCl3(N SiM e3)]2 C H 3CN has been prepared from [TiCl^NSiM ej)]^ with PPh4Cl in acetonitrile solution as yellow crystals. The com pound crystallizes in the triclinic space group P 1 with one formula unit per unit cell, 3447 observed unique reflections, R = 0.053. Lattice dimensions at 200 K: a = 1030(1), b = 1253(1), c = 1374(1) pm, a = 77.46(8)°, ß = 73.93(8)°, y = 69.99(9)°. The structure consists o f PPh4+ ions and centrosymmetric dimeric anions [TiCl3(N SiM e3)]2~, in which pentacoordinate titanium atom s are associated via the nitrogen atoms o f the silylimido groups. (PPh4)2[TiCl4(OSPCl2)]2 has been prepared by the reaction o f PPh^fOSPClJ with titanium tetrachloride in C H 2C12 solution as orange crystals. (Space group P I , Z = 1, 3242 observed unique reflections, R = 0.033). Lattice dim ensions at 193 K: a = 1114.8(2), b = 1190.6(2), c = 1218.7(2) pm, a = 72.18(1)°, ß = 85.45(1)°, y = 69.19(1)°. The structure consists o f PPh4+ ions and centrosymmetric dimeric anions [TiCl4(O SPCl2)]^~, in which hexacoordinate titanium atom s are associated via two chlorine atoms. The OSPCl2_ group is coordinated via the oxygen atom. 
  Reference    Z. Naturforsch. 47b, 1386—1392 (1992); eingegangen am 9. März 1992 
  Published    1992 
  Keywords    Dimeric Titanium Complexes, Synthesis, IR Spectra, Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1386.pdf 
 Identifier    ZNB-1992-47b-1386 
 Volume    47 
28Author    Michael Plate, Peter Hofacker, WernerM. Assa, Birgit Schwarz, Bernhard Neumüller, Kurt DehnickeRequires cookie*
 Title    Synthese und Kristallstrukturen der Wolfram(VI)-Alkinkomplexe |WCl4(P h -C = C -I)(T H F )l und [WCl4( P h -C = C -T e -C 4H9)(THF)| Synthesis and Crystal Structures o f the Tungsten(VI) Alkyne Complexes [WCl4(P h -C = C -I)(T H F )] and [WCl4( P h -C = C -T e -C 4H 9)(THF)]  
 Abstract    [WCl4(P h -C = C -I)(T H F)] has been prepared by the reaction o f mrns-[WCl4(SEt2)2] with P h -C = C -I in TH F solution, whereas [WCl4(P h -C = C -T e -n C 4H 9)(THF)] has been syn­ thesized by the reaction o f P h -C = C -T e -« C 4H 9 with tungsten hexacloride in the presence o f C2C14 and THF. Both complexes were characterized by IR spectroscopy and by crystal struc­ ture determinations. [WCl4(P h -C = C -I)(T H F)]: Space group P 2,/c, Z = 4, 2617 observed unique reflections, R = 0.064. Lattice dimensions at -7 0 °C: a = 1518.2(3), b = 714.5(1), c = 1540.0(3) pm, ß = 90.09(3)°. [WCl4(P h -C = C -T e -« C 4H9)(TH F)]. Space group P 1, Z = 2, 3911 observed unique reflec­ tions, R = 0.067. Lattice dimensions at 20 °C: a = 844.0(3), b = 974.6(4), c = 1002.4(3) pm, a = 76.00(4),/? = 105.14(1), y = 82.03(3)°. Both complexes have molecular structures, in which the tungsten atom s are seven-coordi­ nate by four chlorine ligands, by the two alkyne carbon atom s, and in trans position to the latter by the oxygen atom o f the T H F molecule. The WC bond lengths are 198 and 200(1) in the telluro complex and 206 and 196(1) pm in the iodine derivative. 
  Reference    Z. Naturforsch. 48b, 1105—1111 (1993); eingegangen am 21. April 1993 
  Published    1993 
  Keywords    Tungsten Alkyne Complexes, Synthesis, IR Spectra, Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1105.pdf 
 Identifier    ZNB-1993-48b-1105 
 Volume    48 
29Author    Frank Weller, Fritjof Schmock, Kurt Dehnicke, Kurt Findeisen Bayer-WerkRequires cookie*
 Title    Synthese, IR-Spektrum und Kristallstruktur von 1.3.5-Trichlortriazinium-hexachloroantimonat, [HC3N3C13]SbCl6 Synthesis, IR Spectrum and Crystal Structure of 1.3.5-Trichlortriazinium Hexachloroantim onate, [HC3N3Cl3]SbCl6  
 Abstract    ,3,5-Trichlortriazinium hexachloroantimonate has been prepared by the reaction of CCl2 = N-COCl with antimony pentachloride in boiling dichloromethane. The compound was characterized by IR spectroscopy and by a crystal structure determination. [HC3N3Cl3]SbCl6 crystallizes in the monoclinic space group P 2 Jn with four formula units per unit cell. 2503 observed unique reflections, R = 0.029. Lattice dimensions at 19 °C: a = 1314.1(1), b = 958.2(1), c = 1329.1(1) pm, ß = 117.113(5)°). The compound forms ion pairs via a linear N -H • • • Cl bridge, thus distorting the SbCl6~ ion from octahedral geometry. The C3N3 skeleton of the [HC3N3C13]+ ion is nearly planar, but the hydrogen atom lies about 30 pm out of this plane. 
  Reference    Z. Naturforsch. 49b, 360—364 (1994); eingegangen am 3. November 1993 1.3. 
  Published    1994 
  Keywords    5-Trichlortriazinium Salt, Synthesis, IR Spectra, Crystal Structure 1 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0360.pdf 
 Identifier    ZNB-1994-49b-0360 
 Volume    49 
30Author    Z. NaturforschRequires cookie*
 Abstract    Single crystals of (Me3Sn)3CCN were obtained by the reaction of tris(trimethylstannyl)amine with boiling acetonitrile in the presence of potas­ sium fluoride and trimethylarsane. The compound has been characterized by IR spectroscopy and by a crystal structure determination. Space group 
  Reference    Z. Naturforsch. 52b, 145—148 (1997); eingegangen am 7. Oktober 1996 
  Published    1997 
  Keywords    Tin Compound, Synthesis, IR Spectra, Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0145_n.pdf 
 Identifier    ZNB-1997-52b-0145_n 
 Volume    52 
31Author    N.M U Rq, U. Iza3, S.G M AncaaRequires cookie*
 Title    On the Incorporation o f Li(I) into the Fluoroapatite Lattice  
 Abstract    a Instituto de Q ufm ica A nalftica, Facultad de Bioqufm ica, Q ufm ica y Farmacia, U niversidad N acional de Tucum än, 4000-Tucum an, A rgen tina b C entro de Q ufm ica Inorgänica (C E Q U I N O R), Facultad de C iencias Exactas, U n iversidad N acional de La Plata, C. C orreo 962, In attem pts to incorporate the L i(I) cation into the C a(II) position s o f the fluoroapatite lattice it has been sh ow n that the unit cell b eco m es increasingly distorted with the increase o f lithium concentration. C rystallographic data have been obtained from X-ray pow d er data. The infrared spectra o f th ese su bstitu ted apatites sh ow that the Li(I) incorporation has a n egligible effect on the strength o f the P-O bonds. 
  Reference    Z. Naturforsch. 52b, 1281 (1997); received July 2 1997 
  Published    1997 
  Keywords    Lithium, F luoroapatite, Crystal D ata, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1281_n.pdf 
 Identifier    ZNB-1997-52b-1281_n 
 Volume    52 
32Author    Wolfgang Beck, ThomasM. KlapötkeRequires cookie*
 Title    and IR Frequencies of the Anionic Fulminate Complexes [Co(CNO)6]3-, [Ni(CNO)4]2-, [Zn(CNO)4]2-, [Pt(CNO)4]2", [Au(CNO)2] ' and [Hg(CNO)4]2  
 Abstract    The structural parameters and IR frequencies of the following anionic fulminate complexes were computed at the density functional BPW91 level of theory using a 6-31++G(2d) basis for C, N, O, Co, Ni, and Zn and quasi-relativistic ECP60MWB core potentials for Pt, Au and Hg: [Co(CNO)6]3-(Oh), [Ni(CNO)4]2-(D 4h), [Zn(CNO)4]2-(Td), [Pt(C N 04]2-(D 4h), [Au(CNO)2]~ (£>xh) and [Hg(CNO)4]2-(Td). The structures were optimised within the symmetries stated above and were found to represent true minima (number of imaginary frequencies, NIMAG = 0). The agreement between the calcu­ lated structural parameters and characteristic asymmetric and symmetric CNO stretching fre­ quencies is very good for all complexes. 
  Reference    Z. Naturforsch. 56b, 1376—1378 (2001); received October 16 2001 
  Published    2001 
  Keywords    DFT Calculations, Fulminate Complexes, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-1376_n.pdf 
 Identifier    ZNB-2001-56b-1376_n 
 Volume    56 
33Author    M. Maeda, T. Ito, M. Hori, G. JohanssonRequires cookie*
 Title    The Structure of Zinc Chloride Complexes in Aqueous Solution  
 Abstract    The structure of zinc chloride complexes with different ratios of chloride to zinc, formed in concentrated ZnCl 2 aqueous solutions, were determined from large-angle X-ray scattering using concentrations of the chloride complexes estimated by complementary Raman spectroscopic mea-surements. The highest chloro complex, [ZnCl 4 ] 2 ~, is tetrahedral with a Zn-Cl bond length of 2.294(4) Ä. The trichloro complex, [ZnCl 3 ]~, which coordinates one water molecule, is pyramidal with the Cl-Zn-Cl angle 111°. The Zn-Cl and the Zn-H 2 0 bonds are 2.282(4) and 1.9 A, respec-tively. The two lower complexes, [ZnCl 2 ] and [ZnCl] + , cannot be separated by Raman spectra. o The average Zn-Cl distance in these complexes is 2.24 Ä, and the average Zn-H 2 Ö distance is 1.9 A. In [Zn(H 2 0) 6 ] 2+ the Zn-H 2 0 distance is 2.15 Ä. of zinc (II) chloride complexes; structure of hydrated non-complexed zinc (II) ion. 
  Reference    Z. Naturforsch. 51a, 63—70 (1996); received November 7 1995 
  Published    1996 
  Keywords    X-ray diffraction, Raman spectra, IR spectra, structures 
  Similar Items    Find
 TEI-XML for    default:Reihe_A/51/ZNA-1996-51a-0063.pdf 
 Identifier    ZNA-1996-51a-0063 
 Volume    51 
34Author    N.K D, A.K S En, G.Requires cookie*
 Title    Chemistry of Lanthanons, XLII Preparation and Characterization of Isonicotine and Picoline Hydrazide Complexes of Lanthanons  
 Abstract    Rare 
  Reference    (Z. Naturforsch. 30b, 769—772 [1975]; received May 5/June 16 1975) 
  Published    1975 
  Keywords    Earth Complexes, Conductance, Thermal Analysis, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0769.pdf 
 Identifier    ZNB-1975-30b-0769 
 Volume    30 
35Author    Requires cookie*
 Title    Komplexchemie polyfunktioneller Liganden  
 Abstract    , XXXV1 Das Reaktionsverhalten von Co2(CO)8 gegenüber dem tritertiären Phosphin l.l.l-Tris(diphenylphosphinomethyl)äthan Complex Chemistry of Polyfunctional Ligands, X X X V 1 Reaction o f Co2(CO)8 w ith the T ritertiary Phosphine 1,1,1-Tris(diphenylphosphinom ethyl)ethane J o c h e n E l l e r m a n n und J o a c h i m F. S c h i n d l e r Octacarbonyldicobalt reacts with the tritertiary phosphine l,l,l-tris(diphenylphosphino-methyl)ethane (TDPME) to give the ionic complex [Co(CO)2TDPME][Co(CO)4]. Treat­ ment of [Co(CO)2TDPME][Co(CO)4] with Na[B(CeH5)4], HCIO4 and CH3J yields the 
  Reference    (Z. Naturforsch. 30b, 914—919 [1975]; eingegangen am 7. Juli 1975) 
  Published    1975 
  Keywords    Cobaltcarbonyl Derivatives, Tritertiary Phosphine, Raman Spectra, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0914.pdf 
 Identifier    ZNB-1975-30b-0914 
 Volume    30 
36Author    Heinrich Homborg, Wilhelm Preetz, Günes Barka, Gernot SchätzelRequires cookie*
 Title    Darstellung und spektroskopische Charakterisierung von Tetrahalogenooxalato-Osmaten(IY)  
 Abstract    Reaction of [OsXe] 2-(X = CI, Br, I) with oxalic acid in water gives the very stable and deeply coloured new complexes [OsX40x] 2-which can be precipitated as alkali or tetra-alkylammonium salts. The salts with long-chain alkylammonium ions are soluble in all common no polar solvents. The IR and Ra spectra and the depolarization ratios are consistent with the local C2v-symmetry. The coupling between the vibrations of co-ordinated oxalate and with the skeletal [OsX402]-modes is apparently small. The optical spectra have been studied at low temperature (10 K). Analogous to [OsXe] 2-the very intense absorptions in the UV and VIS are assigned to the electric dipole allowed electron transfer from "(jr+cr)tiu, 7rt2U(y7), 7it2u(y8) and (<r-f-7r)tiu" to "dt2g". By the descent in symmetry each of these transitions is further split in three components (Ai, Bi, B2) corresponding to the three different groups of ligands, X2 tr -, X2 C -and ox. The distinction between the X2 tr --*-Os and X2 C --> Os is caused by a static trans-effect and depends on the difference of the optical electronegativities induced by ox. This splitting is not observed for [OsCLiox] 2 -but is about 900 cm-* for [OsBr4ox] 2 -and 1200 cm" 1 for [OsI4ox] 2 -. The well defined bands in the NIR and VIS are assigned to the intraconfigurational d-d-transitions between the spin-orbit components in the octahedral doublegroup Oh* splitted by the lower C2v-symmetry. Some of the zero-phonon transitions within the split of the 3 Tig, Oh-groundstate exhibit extremely high intensities (e~2500 cm 2 /mmol). The assign-ment of these transitions is improved by the electronic Ra spectra. The finestructure of some of the d-d-transitions originates from coupling with Ai vibrational modes especially with Vs(C-O). 
  Reference    Z. Naturforsch. 35b, 554—563 (1980); eingegangen am 10. Dezember 1979 
  Published    1980 
  Keywords    Tetrahalooxalato-osmates(IV) UV-VIS Spectra, IR Spectra, Raman Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0554.pdf 
 Identifier    ZNB-1980-35b-0554 
 Volume    35 
37Author    Emmanuel Chukwuemeka OkaforRequires cookie*
 Title    The Metal Complexes of Heterocyclic /?-Diketones and their Derivatives, Part VIII Synthesis, Structure, Proton NMR and Infrared Spectral Studies of the Complexes-Phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5 (HPMTFP)  
 Abstract    of Al(in), Fe(ffl), Co(ffl), Rh(m), In(ffl), and Zr(IV) with l New complexes of Al(III), Fe(III), Co(III), Rh(III), In(III) and Zr(IV) with 1-phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5, (HPMTFP), have been synthesized and charac-terized by means of elemental analyses, conductivity and magnetic moment measurements, proton NMR and infrared spectroscopy. It is concluded that the ligand, HPMTFP, reacts as a bidentate enol forming neutral metal chelates. The PMR spectra of chelates suffi-ciently soluble in deuterated NMR solvents were recorded and studied. The IR spectra are measured between 4000-200 cm -1 and assignments are proposed for the observed fre-quencies. The M-0 stretching frequency follows the order: AI > Rh > Fe — Co = Zr > In. 
  Reference    Z. Naturforsch. 36b, 213—217 (1981); received September 17 1980 
  Published    1981 
  Keywords    Metal Complexes, PMR Spectra, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0213.pdf 
 Identifier    ZNB-1981-36b-0213 
 Volume    36 
38Author    Römer, H. Scholl, H. Budzikiewicz, H. Korth, G. PulvererRequires cookie*
 Abstract    The structure elucidation of several minor phenazine pigments of Pseudomonads is described. 4-Hydroxyphenazine-l,6-dicarboxylic acid dimethyl ester, 2,3-dihydroxy-phenazine, 2,3,7-trihydroxyphenazine, 4-hydroxyphenazine-l-carboxylic acid, 2,3-di-hydroxyphenazine-l-carboxylic acid, 2,6-dihydroxyphenazine-l-carboxylic acid and 2,3,7-trihydroxyphenazine-l,6-dicarboxylic acid are new phenazine derivatives. The distribu-tion of phenazines in the genus Pseudomonas is investigated. 
  Reference    Z. Naturforsch. 36b, 1037—1046 (1981); eingegangen am 27. März 1981 
  Published    1981 
  Keywords    Phenazines, Bacterial Constituents, Pseudomonads, NMR Spectra, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1037.pdf 
 Identifier    ZNB-1981-36b-1037 
 Volume    36 
39Author    S. P. Perlepes, ThF. Zafiropoulos, A. K. Anagnostopoulos, A. G. GalinosRequires cookie*
 Title    Compounds of Complex Halo and Pseudohalo Acids of the Group IIB Metals, Part V [1] Preparative and Spectroscopic Studies of the [Hg2I5]-, [Hg2I6]2-and [Hg3I8] 2 -Ions  
 Abstract    The preparations of new compounds, containing the complex anions [Hg2ls] -, [Hg2le] 2-and [Hg3I8] 2 -, are reported. Distorted iodine-bridged configurations are proposed for the complexes in the solid state, utilising analyses, X-ray powder patterns, molar conductance measurements and spectral (IR, UV) data. 
  Reference    Z. Naturforsch. 37b, 646—648 (1982); received November 9 1981 
  Published    1982 
  Keywords    Mercury, Iodomercurates, 3-Picoline, Quinoline, IR Spectra 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0646.pdf 
 Identifier    ZNB-1982-37b-0646 
 Volume    37 
40Author    Ulrich Müller, Abdel-Fatah Shihada, Kurt DehnickeRequires cookie*
 Title    P(C6H5)4[VOBr4]: Synthese, IR-Spektrum und Kristallstruktur P(C6H5)4[VOBr4]: Synthesis, IR Spectrum and Crystal Structure  
 Abstract    PPh 4 [VOBr4] was prepared by the reaction of PPh4Br with VOBr3 in CH2Br2 solu-tion. The structure of the dark violet crystals was determined with X-ray diffraction. PPli4[VOBr4] crystallizes in the space group P4/n with the lattice constants a = 1275.9 and c = 784.5 pm with two formula units per unit cell. The structure type corresponds to the frequently encountered AsPh4[RuNCl4] type. The VOBr4~ ion forms a square pyramid; the V = O bond has a length of 155 pm. In the IR spectrum, the V —O stretching vibration appears at 922 cm -1 . 
  Reference    Z. Naturforsch. 37b, 699—701 (1982); eingegangen am 29. Januar 1982 
  Published    1982 
  Keywords    Tetraphenylphosphonium Tetrabromooxovanadate(V), Synthesis, IR Spectra, Crystal Structure 
  Similar Items    Find
 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0699.pdf 
 Identifier    ZNB-1982-37b-0699 
 Volume    37