Go toArchive
Browse byFacets
Bookbag ( 0 )
Facet   section ZfN Section B:Volume 051  [X]
Results  295 Items
Sorted by   
Publication Year
1996 (295)
81Author    O. Schrandt, Hk Müller-BuschbaumRequires cookie*
 Title    K + auf einer mit C a2+ unterbesetzten Punktlage in Ca3( V 0 4) 2: Ein Beitrag über K C a 10V 7O 28 K + at an D eficient Ca2+ Point Position in C a3( V 0 4) 2: On K C a 10V 7O 28  
 Abstract    Single crystals o f K C a ^ V y O ,« have been prepared by crystallization from flux. The yellow-green crystals show rhombohedral symmetry (trigonal space group C3V-R3c, a = 10.830(1), c = 37.860(1) A , Z = 6). The differences o f the crystal chemistry are discussed with respect to the isotypic compound Ca3(V 0 4) 2. K + replaces exclusively Ca2+ ions at one deficient point position. 
  Reference    Z. Naturforsch. 51b, 473—476 (1996); eingegangen am 16. Oktober 1995 
  Published    1996 
  Keywords    Potassium, Calcium, Vanadium Oxide, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0473.pdf 
 Identifier    ZNB-1996-51b-0473 
 Volume    51 
82Author    O. Schrandt, Hk Müller-BuschbaumRequires cookie*
 Title    Geordnete Metallverteilung in K B a V 0 4 und K S rV 0 4 mit /?-K2S 0 4-Struktur Ordered Metal Distribution in K B a V 0 4 and K S r V 0 4 Showing p -K 2S 0 4 Structure  
 Abstract    Single crystals of K B a V 0 4 (I) and K S rV 0 4 (I I) have been prepared by crystallization from V 20 5 flux. The yellowish crystals show orthorhombic symmetry, space group D'^-Pnma with (I): a = 7.774(2), b = 5.899(1), c = 10.375(2) A , (II): a = 7.400(2), b = 5.812(1), c -9.961(1), Z = 4. Both compounds show an ordered distribution o f K + and Ba2+ and Sr2+ respectively. The different sizes of the K 0 1() and BaOy (S r 0 9) polyhedra are discussed with respect to those of the /3-K2S 0 4 structure, considering the calculations o f the Coulomb terms of lattice energy. 
  Reference    Z. Naturforsch. 51b, 477—480 (1996); eingegangen am 5. September 1995 
  Published    1996 
  Keywords    Potassium, Strontium Barium, Vanadium Oxid, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0477.pdf 
 Identifier    ZNB-1996-51b-0477 
 Volume    51 
83Author    E. Peters, Hk Müller-BuschbaumRequires cookie*
 Title    Mit Bor besetzte kondensierte Cluster in Ta5G e3B y (y ~ 0,7)  
 Abstract    Tantalum, Germanium, Cluster Bronze coloured, rod-shaped crystals o f Ta5G e3By have been prepared by C 0 2-LA S E R -techniques. X-ray-methods confirm the well known hexagonal Mn5Si3 type, space-group D}sh-P 6 3/mcm, a = 7.6276(6) and c = 5.2781(9) A . The Ta6-clusters are centred by boron atoms. 
  Reference    Z. Naturforsch. 51b, 481—484 (1996); eingegangen am 5. September 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0481.pdf 
 Identifier    ZNB-1996-51b-0481 
 Volume    51 
84Author    S. Frenzen, Hk Müller-BuschbaumRequires cookie*
 Title    Eine silberhaltige Phase eines Oxoruthenats: A g (MN a2,3Ca4,3R u 0 8 A Silver Containing Phase o f an Oxoruthenate: A g 04N a 23Ca43R u O 8  
 Abstract    Single crystals of A g 04Na23Ca43RuO8 have been prepared by heating Na20 2, CaO and ruthenium in closed silver tubes. Silver took part in the reaction. The crystal structure was investigated by X-ray techniques. A g 04N a2.3Ca43R uO 8 crystallizes with orthorhombic sym­ metry, space group D^-Cm m m ; a = 9.255(1), b = 6.683(1), c = 6.696(3) Ä , Z = 2. It shows relations to the sodium chloride structure. A statistical distribution of A g + and N a+ can be separated in micro space by splitting one oxygen position to give a dumb-bell like O -A g -O and an octahedral N a 0 6 coordination. 
  Reference    Z. Naturforsch. 51b, 485—488 (1996); eingegangen am 16. Oktober 1995 
  Published    1996 
  Keywords    Silver, Sodium, Calcium, Ruthenium Oxide, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0485.pdf 
 Identifier    ZNB-1996-51b-0485 
 Volume    51 
85Author    J. Feldmann, Hk Müller-BuschbaumRequires cookie*
 Title    Kristallstrukturuntersuchung am Barium-Yanadyl-Vanadat: Ba2(V 0)V 20 8 Crystal Structure Investigation of the Barium Vanadyl-Vanadate: Ba2(V 0 )V 20 8  
 Abstract    Single crystals of Ba2(V 0)V 20 8 have been prepared by solid state reactions of Ba2V 20 7, V 9O 1 and V ^ 05 in sealed silica tubes. This compound crystallizes with monoclinic symmetry, space group C 1 -P 2 ,, a = 8.1174(9), b = 5.9699(9), c = 9.2903(9) A , ß = 113.94(1)°, Z = 2. V 5+ shows tetrahedral coordination. V 4+ inside ^ [V (3)0 4] chains is characterized by a square pyramidal coordination with a short apical V-O distance of 1.6 A typically for vanadyl groups. Ba2(V 0)V 20 8 represents a new structure type and is not isotypic to Sr2(V 0)V 20 8. 
  Reference    Z. Naturforsch. 51b, 489—4 (1996); eingegangen am 22. August 1995 
  Published    1996 
  Keywords    Barium, Vanadium, Oxide, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0489.pdf 
 Identifier    ZNB-1996-51b-0489 
 Volume    51 
86Author    S. Münchau, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis des ersten Alkalimetall-Cadmium-Halogeno-Oxovanadats: K4CdV50 15Cl On the First Alkaline-Cadmium-Vanadium Oxide Halide: K4CdV50 15Cl Crystal Structure, Alkaline-Cadmium-Vanadium Oxide Halide  
 Abstract    Single crystals of K4CdV50 15Cl have been prepared by crystallization from melts. The yellow crystals show tetragonal symmetry, space group C4-P4, a = 9.097(1), c = 5.331(2) Ä, Z = 1. K4CdV50 ]5Cl belongs to the K4C uV5O i3Cl type. V (l) forms V 20 7 double tetrahedra connected by square V (2)O s pyramids and C d 0 4Cl2 octahedra. The crystal structure is dis­ cussed with respect to the isotypic compound K4CuV50 15Cl considering a short V (2)-0 di­ stance indicative of a vanadinyl group. 
  Reference    Z. Naturforsch. 51b, 493—4 (1996); eingegangen am 7. Juni 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0493.pdf 
 Identifier    ZNB-1996-51b-0493 
 Volume    51 
87Author    Hans-JR. Akebrandta, Uwe Klingebiel, Mathias Noltem, Zdirad ZakbRequires cookie*
 Title    ]nonane -Syntheses und Crystal Structure  
 Abstract    ferf-butyl-3.7-dichlor-2.4.6.8.9-pentaaza-1.3.5.7-tetrasilabicyclo[3.3.1.]nonan -Synthese und Kristallstruktur 1.3.5.7-Tetra-rm-butyl-3.7-dichloro-2.4.6.8.9-pentaaza-l.3.5.7-tetrasilabicyclo[3.3.1. Tetrasilabicyclo[3.3.1.]nonane, Silicon. Cyclosilazane The reaction of tert-butyltrichlorosilane with an excess of ammonia leads to the formation of a tetrasilabicyclo[3.3.1.]nonane, an NH-bridged cyclotetrasilazane. The crystal structure of the compound (M e3CSi)4Cl2(N H)5 is described. 
  Reference    Z. Naturforsch. 51b, 498 (1996); eingegangen am 1. September 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0498.pdf 
 Identifier    ZNB-1996-51b-0498 
 Volume    51 
88Author    Wolfgang Weigand, Michael Weishäupl3, Christian RoblbRequires cookie*
 Title    Metallkomplexe mit funktionalisierten Schwefelliganden, X [1] Ruthenium(II)-und Platin(II)-l-alkin-l-thiolato-Komplexe. Kristallstrukturanalyse von fr0/is-(Ph3P)2Pt[S-C=C-C(CH3)3]2 M etal Complexes of Functionalized Sulfur Containing Ligands, X [1] Synthesis of Ruthenium (II) and Platinum(II) 1-Alkyne-l-thiolato Complexes. X-Ray Structure Analysis of rra n s ^ P t^ P ^ P tfS -C ^ C -Q C H ^ k 1-A lkyne-l-thiolato Ligands, Platinum Complexes, Ruthenium Complexes, 31P CP/M AS N M R Spectra  
 Abstract    The 1-alkyne-l-thiolates R -C =C -SLi [la: R = C(CH3)3, lb: R = C6H n ] react with L2PtCl2 (L = PPh3, 1/2 dppe) and CpRu(PPh3)2Cl, respectively to give the com plexes trans-(Ph3P)2Pt[S-C =C -C (C H 3)3]2 (2a), cis-dppePt[S-C=C-C(CH3)3]2 (2b), and CpRu(PPh3)2-(S -C = C -R) [3a: R = C(CH3)3, 3b: R = C6H U]. 2a has been characterized by 31P CP/M AS NM R spectroscopy and its crystal structure determined by X-ray diffraction. 
  Reference    Z. Naturforsch. 51b, 501 (1996); eingegangen am 4. September 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0501.pdf 
 Identifier    ZNB-1996-51b-0501 
 Volume    51 
89Author    Fausto Calderazzoa, GiuseppeE. De, B. Enedettoa+, Ulli Englertb, Isabella Ferri3, Guido Pam, TrixieW. AgnerbRequires cookie*
 Title    New Preparative Methods for the Halides of Titanium(II) and Vanadium(II): Reduction of Titanium(IV) Halides with Sodium and Oxidation of Bis(mesitylene)vanadium(0)  
 Abstract    Titanium(II) Chloride. Vanadium(II) Chloride, Sodium Reduction TiCl4(T H F)2 reacts with two equivalents of sodium in THF to afford the soluble TiCl2(THF)" (1), which has been characterized analytically and by spectroscopic and m ag­ 
  Reference    Z. Naturforsch. 51b, 506 (1996); received September 12. 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0506.pdf 
 Identifier    ZNB-1996-51b-0506 
 Volume    51 
90Author    DietrichK. Breitinger, Roman BreiterRequires cookie*
 Title      
 Abstract    ?ram-(NH4)2[R u (S 0 3)2(N H 3)4]-4 H 20 (1) (m onoclinic, P l x!n\ a = 629.8(3), b = 1000.6(2), c = 1345.7(5) pm, ß = 112.25(4)°, Z = 2; R = 0.021; R w = 0.017) is obtained as pale greenish-yellow crystals by reaction of /ra « s-[R u (S 0 3H)2(N H 3)4] (2) with aqueous ammonia, and crys­ tallization at +5 °C. The compound, when isolated, is stable at room temperature for only a few days even under inert gas, but persists under the mother liquor. In the centrosymmetric anion frö/?s-[Ru(S03)2(N H 3)4]2~ the bonds Ru-S = 230.5(1) pm are significantly longer than in the neutral complex 2 (227.6(1) pm), whereas the Ru-N bonds are the same in both com ­ plexes within experimental error (averages 214.1 and 214.0 pm). Hence, the mutual trans-influence of the sulfite ligands is weakened on protonation; the bonding of the co-ligands in c/s-position is not affected. The internal structure o f the sulfite ligand in 1 with long S-O bonds (average 151.2(5) pm) and small angles O-S-O (average 106.1(6)°) and the weakened Ru-S bond are a good match. The structure of 1 is held together by a complex network of hydrogen bonds, in which all potential hydrogen-bond donors (O H 2, N H 4+, N H 3) and accep­ tors (H 20 , S 0 3) are involved. The structural findings are reflected in the vibrational spectra. 
  Reference    Z. Naturforsch. 51b, 517 (1996); received August 25 1995 
  Published    1996 
  Keywords    Ruthenium(II) Sulfito Complex, Crystal Structure, m ws-Influence, Hydrogen Bonding 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0517.pdf 
 Identifier    ZNB-1996-51b-0517 
 Volume    51 
91Author    Lithiumteilstruktur Von Lithiumnitridtribromid, Und Li6nbr3, Lithiumnitridtriiodid, Li6ni3, Rupert Marx3, Hans Michael, M. AyerbRequires cookie*
 Title    Darstellung und  
 Abstract    Single phase Li6N Br3 was prepared by the reaction of Li3N and dry, OH-free LiBr at 450°C. It is the most bromide rich com pound in the quasi binary system Li3_2.vN 1_*Brv. The crystal structures o f Li6N Br3 and o f isotypic Li6NI3, have been redetermined from neutron powder diffraction data. Both compounds crystallize in the cubic space group Fm3m (No. 225), a(Li6N Br3) = 894.18(7), a(Li6N I3) = 951.7(1) pm with 4 formula units per unit cell. The anion sublattice comprises a rock salt like arrangement of N with one o f the three halogen atoms (H a ll), with the remaining halogen atoms in the resulting N4Hal4 cubes. The structure may be regarded as an ordered A X 3 variation of a body-centered packing. The lithium atoms are disordered over the 96 (distorted) tetrahedral N X 3 holes in such a way that of the four neighbouring, face-sharing NBr3 tetrahedra along an N -H all-connection line only one is occupied. The resulting Li coordination polyhedron around N (and H a ll) is a distorted octa­ hedron with 6 equidistant Li atoms. Hal2 is surrounded by 12 Li atoms. The Li6NHal3 struc­ ture may be regarded as an anti-form of the cryolite structure. 
  Reference    Z. Naturforsch. 51b, 525 (1996); eingegangen am 17. Juli 1995 
  Published    1996 
  Keywords    Lithium Nitride Trihalogenide, Preparation, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0525.pdf 
 Identifier    ZNB-1996-51b-0525 
 Volume    51 
92Author    Stefan Anfang3, Kurt Dehnicke3, Jörg MagullbRequires cookie*
 Title    Die Kristallstrukturen der Dysprosium-Komplexe [DyCl3(DME)2] und [DyCl2(THF)5]+[DyCl4(THF)2] ~ Crystal Structures of the Dysprosium Complexes [DyCl3(D M E)2] and [DyCl2(TH F)5]+[DyCl4(TH F)2]  
 Abstract    [D yCl3(D M E)2] (D M E = 1,2-dimethoxyethane) has ben prepared from the known tetrahy-drofuran complex [Dy2Cl6(TH F)7] in boiling DM E. Both com plexes were characterized by structure determinations. [D yCl3(D M E)2]: Space group P2j/c, Z = 4, lattice dimensions at -7 0 °C: a = 1141.9(6), b = 884.2(4), c = 1558.3(6) pm, ß = 104.83(4)°. The complex has a molecular structure with a distorted pentagonal bipyramidal geometry in which the oxygen atoms o f the chelating DM E m olecules and one chlorine atom occupy the pentagonal plane. [D yC l2(T H F)5]+[DyCl4(TH F)2]~: Space group C2/c, Z = 4, lattice dim ensions at -7 0 °C: a -1241.4(9), b = 1139.4(6), c = 2735.1(19) pm, ß = 91.19(4)°. The com plex contains a seven-coordinate cation with axial chloride ligands in a pentagonal bipyramidal structure and a six-coordinate anion with a trans octahedral geometry. 
  Reference    Z. Naturforsch. 51b, 531 (1996); eingegangen am 26. Oktober 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0531.pdf 
 Identifier    ZNB-1996-51b-0531 
 Volume    51 
93Author    Thomas Dahlems, Dietrich Mootz, Michaela SchillingRequires cookie*
 Title    Zweidimensionales Eis und H50 2+-Ionen. Zur Bildung und Struktur tiefschmelzender molekularer und ionischer Hemi-bis Hexahydrate halogenierter Essigsäuren CCl"F3."COOH (n = 1 bis 3) [1] Two-Dimensional Ice and H 50 2+ Ions. On Formation and Structure of Low-Melting Molecular and Ionic Hemi-through Hexahydrates of Haloacetic Acids CCl"F3."COOH (n = 1 to 3) [1]  
 Abstract    Hydrate formation o f haloacetic acids CCl"F3_"COOH (n = 1, 2, 3) has been studied by D TA and tem perature-dependent X-ray powder diffraction, and evidence obtained for five phases, all melting at temperatures below ambient. The hydrates have been confirmed and further characterized by their crystal structures at -1 5 0 °C. Three lower hydrates, CC12F C O O H 0.5H -> 0 (space group P2,/c and Z = 8 formula unites per unit cell), CC1F2C 0 0 H H 20 (P2,/c, Z = 4), and CC1F2C 0 0 H -4 H 20 (P I, Z = 2), have molecular structures with the acid and water m olecules hydrogen-bonded in two-dimensional arrays. The structures of the remaining hydrates, CCl2F C O O H -6H 20 and CC13C 0 0 H -6 H 20 (sim i­ lar, but not isotypic, both P 1 and Z = 2), are ionic, as (H s0 2+)(C X 3C 0 Ö) -4 H 20 , and three-dimensional. The neutral water molecules are hydrogen-bonded in ice-like layers rare in crystal chemistry. A lso, CCl2FCOOH is established only as the second acid o f which a lower hydrate is molecular and a higher one ionic. 
  Reference    Z. Naturforsch. 51b, 536 (1996); eingegangen am 16. Oktober 1995 
  Published    1996 
  Keywords    Crystal Structure, Haloacetic Acid Hydrate, Hydrogen Bonding, Melting Diagram 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0536.pdf 
 Identifier    ZNB-1996-51b-0536 
 Volume    51 
94Author    W. Lübbe, W. PreetzRequires cookie*
 Title    Darstellung, n B-, 13C-, !H-NMR-und Schwingungsspektren von //-Methylen-bis  
 Abstract    hexahydro-c/öso-hexaborat, [B6H6(CH2)B6H6]2_, und Kristallstruktur von [As(C6H5)4]2[B6H6(CH2)B6H6]* V2(CH3)2CO Preparation, "B , 13C, NM R and Vibrational Spectra of //-M ethylene-bis-hexahydro-doso-hexaborate, [B6H 6(C H 2)B6H 6]2~, and Crystal Structure of [As(C6H 5)4]2[B6H 6(C H 2)B6H 6] • V2 (CH3)2CO ^-M ethylene-bis-hexahydro-c/oso-hexaborate(2-), ' 
  Reference    Z. Naturforsch. 51b, 545 (1996); eingegangen am 19. Septem ber 1995 
  Published    1996 
  Keywords    H NM R Spectra, Vibrational Spectra, 13C NMR Spectra, n B NMR Spectra 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0545.pdf 
 Identifier    ZNB-1996-51b-0545 
 Volume    51 
95Author    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 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0551.pdf 
 Identifier    ZNB-1996-51b-0551 
 Volume    51 
96Author    Rolf Minkwitz, Jens Jakob, Andreas Kornath, Hans PreutRequires cookie*
 Title    Uber die Darstellung, spektroskopische Charakterisierung und Kristallstruktur von Trifluormethylazosulfbn-N,N-dimethylamid (CH3)2N S (0)2NNCF3 On the Preparation, Spectroscopic Characterization and Crystal Structure of Trifluoromethylazosulfon-N,N-dimethylamid (C H 3)2N S (0 )2NNCF3  
 Abstract    The reaction of Trifluoronitrosomethan with (CH3)2NS(0)2N H 2 in T H F and Na2C 0 3 as 
  Reference    Z. Naturforsch. 51b, 557—562 (1996); eingegangen am 10. O ktober 1995 
  Published    1996 
  Keywords    Trifluormethylazosulfon-N, N-dimethylamid, Vibrational Spectra, NM R Spectra, Mass Spectra, Crystal Structure 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0557.pdf 
 Identifier    ZNB-1996-51b-0557 
 Volume    51 
97Author    Heide Kraudelt, Eberhard Ludwig, Uwe Schilde, E.Rhard UhlemannRequires cookie*
 Title    Hydrolyse von Trifluoracetylaceton-salicylhydrazon. Struktur von Aceton-salicylhydrazon Hydrolysis of Trifluoroacetylacetone Salicylhydrazone. Structure of Acetone Salicylhydrazone  
 Abstract    The reaction of trifluoroacetylacetone with salicylhydrazone gives acetone salicylhydra­ zone besides the expected trifluoroacetylacetone salicylhydrazone. The resulting mixture was analyzed by mass spectroscopy. The structure of acetone salicylhydrazone was determined by X-ray analysis. Crystal data: a = 12,8493(12) A, b = 6,1084(8) A, 4; R = 0,051; 750 unique reflexions. 
  Reference    Z. Naturforsch. 51b, 563—566 (1996); eingegangen am 15. August 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0563.pdf 
 Identifier    ZNB-1996-51b-0563 
 Volume    51 
98Author    G. O. Stendorp3, O. Tterb, H. HomRequires cookie*
 Title    Syntheses and Properties of Cerium Diphthalocyanines in High Oxidation States; Crystal Structure of [C e(Pc)2](BF4) 0.33  
 Abstract    Ring oxidized green Cerium(IV)diphthalocyanines, [Ce(Pc)2]X (X = (poly)halide, N 0 3_) are prepared by chemical oxidation of ("Bu4N)[Ce(Pc2~)2] with the corresponding halogen in solution or of solid [Ce(Pc2_)2] with aqueous HNO> Electrochemical oxidation of ("Bu4N)[Ce(Pc2_)2] in solution in the presence of ("Bu4N)BF4 yields [Ce(Pc)2](BF4)0.;p, which crystallizes in the tetragonal space group P4/nnc (a, b = 19.643(3) A, c = 6.525(3) A, Z = 2). The CeIV ion is eightfold coordinated by the isoindole N atoms (Niso) of the two staggered (ca. 41°), slightly distorted Pc ligands. The "[Ce(Pc)2]<)33+" subunits are arranged in infinite columns along [001] with the Ce atoms statistically disordered over two positions and C e -N iso bond lengths of 2.45(1) and 2.69(1) A, respectively The UV-VIS spectrum is dominated by the transitions of the Pc2-ligand at ca. 15,000 (B band), 30,000 and 36,000 cm -1 (Q, N region). A low energy ("metallic") band at ca. 2800 cm -1 typical for partially oxidized systems is present. The UV-VIS-NIR spectrum of [Ce(Pc)2]N 0 3 indicates a cofacial Pc2" -P c -complex. In addition to the jt-jz' transitions of the Pc2-moiety at ca. 14,000, 30,000 and 36,000 cm-1, the Ch transition of the Pc-ring is observed at ca. 19,200 cm -1 and the typical N IR band at 6380 cm -1. Oxidation of a thin film of (PNP)[Ce(Pc2_)2] with dry Br2/ N2 gas yields purple [Ce(Pc_)2]B rv, whose UV-VIS-NIR spectrum shows the diagnostic fea­ tures of dimeric Pc~ radicals with intense bands at ca. 14,000 and 18,000 cm -1 assigned as B and Qi bands, respectively. A t ca. 9000 cm 1 the typical Q D absorption is observed. The vibrational spectra are dom inated by the transitions of the Pc-ligand at 1305/1445 cm -1 (IR) and 560/1120/1172/1591 cm-1 (resonance Raman). Excitation with 1064 nm strongly enhances the sym. C e -N stretch at 163 c m '1. 
  Reference    Z. Naturforsch. 51b, 567—573 (1996); received September 14 1995 
  Published    1996 
  Keywords    Diphthalocyanines, Cerium Compounds, Crystal Structure, UV-VIS-NIR Spectra, Vibrational Spectra 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0567.pdf 
 Identifier    ZNB-1996-51b-0567 
 Volume    51 
99Author    Rostislav Lam, H. Erbert Wanjekb, Wolfgang BeckbRequires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, LXXXIII [1]. Palladium(II)-und Platin(II)-Komplexe mit 2-Hydroxyiminocarboxylaten und ihren Derivaten Metal Complexes of Biologically Im portant Ligands, LXXXIII [1], Palladium(II) and Platinum (II) Complexes of 2-Hydroxyiminocarboxylates and their Derivatives  
 Abstract    Palladium(II), Platinum(II), 2-Hydroxyiminocarboxylate, Oximes of Pyruvoyl a-A m ino Acids The synthesis and spectroscopic properties of palladium(II) and platinum (II) chelate com­ plexes with carboxylates of 2-hydroxyiminopropionic, 2-hydroxyimino-3-phenylpropionic acids, with the amide and N-methylamide of 2-hydroxyiminopropionic acid, and with oximes of pyruvoylglycine and pyruvoyl-L-phenylalanine are reported. 
  Reference    Z. Naturforsch. 51b, 574—580 (1996); eingegangen am 17. Juli 1995 
  Published    1996 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0574.pdf 
 Identifier    ZNB-1996-51b-0574 
 Volume    51 
100Author    Rostislav Lam, ShahramM. Ihanb, Wolfgang BeckbRequires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, LXXXY [1] Koordinationsverbindungen von Cobalt(III), Iridium(III), Ruthenium(II) und Palladium(II) mit Isoxazol-und Isoxazolin-3-carboxylaten M etal Complexes of Biologically Im portant Ligands, LXXXV [1] Coordination Compounds of C obalt(III), Iridium (III), R uthenium (II) and Palladium(II) with Isoxazole-and Isoxazoline-3-carboxylates  
 Abstract    Chelate complexes of 5-phenyl-isoxazole-3-carboxylate (L 1) and 5-phenyl-isoxazoline-3-carboxylate (L2) ligands were prepared: PdfL 1)-). C p*(C l)Ir(L '), (p-cym ene)(Cl)Ru(L1), Pd(L2)2, (Et3P)(Cl)Pd(L2), C6H4CH 2N M e2Pd(L2)-L 2H, Cp*(I)Co(L2), Cp*(Cl)Ir(L2) (10), and (p-cymene)(Cl)Ru(L2) (Cp* = C5Me5). The structure of 10 was determined by X-ray diffraction. 
  Reference    Z. Naturforsch. 51b, 581—587 (1996); eingegangen am 27. Juli 1995 
  Published    1996 
  Keywords    Isoxazole-3-carboxylate, Isoxazoline-3-carboxylate, Chelate Complexes, Cobalt, Iridium 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0581.pdf 
 Identifier    ZNB-1996-51b-0581 
 Volume    51 
Prev
1
2
3
4
5
...
Next