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1997[X]
21Author    B. Mertens, Hk Müller-BuschbaumRequires cookie*
 Title    Synthese und Röntgen-Strukturuntersuchung von  
 Abstract    Rb4Cd(V0)(V2 0 7)2Cl und Tl4C d(V0)(V20 7)2Cl Synthesis and X-Ray Structure Analysis o f Rb4C d (V 0)(V 20 7)2Cl and Tl4C d(V 0)(V 20 7)2Cl Single crystals of (I) Rb4Cd(V0)(V20 7)2Cl and (II) Tl4C d(V 0)(V 20 7)2Cl have been prepared by flux techniques. The compounds were examined by X-ray analysis. They crystallize with tetragonal symmetry, space group C{-P4 with (I): a = 9 .142(1); c = 5.525(1), (II): a = 9.150(1), c = 5.405(1) A, Z = 4. Both compound belong to the K4CuV50 | 5Cl-Type. V (l) forms V20 7 double tetrahedra, connected by square V (2)0 5 pyramids and C d 0 4Cl2 octahedra. The short V (2)-0 distance indicates a vanadyl group. 
  Reference    Z. Naturforsch. 52b, 453—456 (1997); eingegangen am 27. Januar 1997 
  Published    1997 
  Keywords    Rubidium, Thallium, Vanadium Oxide-Chloride, Crystal Structure 
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 Identifier    ZNB-1997-52b-0453 
 Volume    52 
22Author    Peter Kaiser, Wolfgang JeitschkoRequires cookie*
 Title    Preparation and Crystal Structures of the Ternary Compounds Ag2SiP2 and AuSiP  
 Abstract    The title compounds were prepared by solid state reaction of the elemental components. Their crystal structures were determined from single-crystal X-ray diffractometer data. Ag2SiP2: 142d, a = 652.75(5) pm, c = 855.0(1) pm, Z = 4, R = 0.024 for 611 structure factors and 14 variable parameters; AuSiP: R3m, a = 345.9(1) pm, c = 1720.0(3) pm, Z = 3, R = 0.023 (352 F values, 11 variables). The silicon atoms in Ag2SiP2 are tetrahedrally coordinated by phosphorus atoms. The compound might therefore be considered as a phosphidosilicate and its formula can be rationalized as (Ag+l)2Si+4(P_3)2. However, Ag2SiP2 is not a tetrahedral compound since the phosphorus atoms have five near neighbors (3Ag + 2Si) and the silver atoms are coordinated by three phosphorus atoms in almost trigonal planar coordination. Weak silver-silver bonding is assumed for the shortest Ag-Ag contacts of 318 pm. In AuSiP the gold atoms are in a linear coordination of one silicon (235.5 pm) and one phosphorus atom (232.6 pm). The silicon and phosphorus atoms are tetrahedrally coordinated (3Si + 1 Au and 3P + 1 Au, respectively). Thus, the elements can be assigned oxidation numbers according to the formula Au+lSi+2P-3 . This structure was also refined in the centrosymmetric space group R3m, but in this improper setting the silicon and phosphorus atoms occupy one crystallographic site with random occupancy. 
  Reference    Z. Naturforsch. 52b, 462 (1997); received September 13 1996 
  Published    1997 
  Keywords    Crystal Structure, Two-Electron Bonds, Zintl Compounds 
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 Identifier    ZNB-1997-52b-0462 
 Volume    52 
23Author    Teodor Silviu Balabana ', NinaG. FurmanovabRequires cookie*
 Title    7T-7T Interactions between Pyrylium and Phenyl Rings in the Crystal  
 Abstract    The crystal structures of two isomeric phenyl-substituted pyrylium perchlorates, 2,6-di-methyl-4-phenylpyrylium (1) and 2,4-dim ethyl-6-phenylpyrylium (2), have been determined. Both cations are planar in the crystal so that the electron deficient pyrylium rings can interact strongly with the phenyl rings of adjacent molecules forming stacks along the shortest crys-tallographic axis. The phenyl rings may act as donors in a charge transfer interaction which is more pronounced in 1 than in 2. Charge transfer appears as a non-mandatory consequence of the 7T-7T stacking. The structures demonstrate the electrostatic nature of these interactions conforming to the model of Hunter and Sanders [ 1 ]. 
  Reference    Z. Naturforsch. 52b, 485 (1997); received January 13 1997 
  Published    1997 
  Keywords    Pyrylium Salt, Crystal Engineering, Charge Transfer, Crystal Structure 
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 Identifier    ZNB-1997-52b-0485 
 Volume    52 
24Author    Stefan Horstmann, Wolfgang SchnickRequires cookie*
 Title    Synthese, Kristallstruktur und Eigenschaften von 1,1,3,3,3-Pentaamino- l-th io -l A \3 A 5-diphosphaz-2-en (NH2)2P(S)N=P(NH2)3 Synthesis, Crystal Structure, and Properties of 1,1,3,3,3-Pentaam ino-l-thio-l A5,3A5-diphosphaz-2-ene (N H 2)2P(S)N =P(NH 2)3  
 Abstract    (NH2)2P(S)N=P(NH2)3 has been prepared by a two step synthesis. Suitable single crystals were obtained from an acetonitrile solution in a temperature gradient between 60 °C and room temperature. The crystal structure of (NH->)tP(S)N=P(NH->)3 has been determined by single cry­ stal X-ray methods (P2,/c, a = 9 9 8 .2 7 (9)> '= 762.78(8), c = 1007.70(15) pm, ß = 107.340(7)°, Z = 4). In the crystal structure each hydrogen atom is subject to a hydrogen bond. Four N-H -N hydrogen bonding interactions per molecule build up a framework connecting two molecules in eight-membered rings. Each sulfur atom shows six distances N -H -S in the range of weak hydrogen bonding interactions. 
  Reference    Z. Naturforsch. 52b, 490—95 (1997); eingegangen am 18. Dezember 1996 
  Published    1997 
  Keywords    Aminophosphazenes, Synthesis, Crystal Structure, Hydrogen Bonding 
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 Identifier    ZNB-1997-52b-0490 
 Volume    52 
25Author    M. Enders, R. Rudolph, H. PritzkowRequires cookie*
 Title    Synthese und Kristallstruktur von Pentakis(dimethylsulfoxid)- oxo-titan(IV)chlorid Synthesis and Crystal Structure o f Pentakis(dimethylsulfoxide)-oxo-titanium(IV) Chloride  
 Abstract    Pentakis(dimethylsulfoxide)-oxo-titanium(IV) chloride is obtained by reaction of titanium tetrachloride with a stoichiometric amount of water in dimethylsulfoxide. A single crystal structure determination (P i, a = 9.564(6), b = 10.504(7), c = 12.510(8) A. a = 70.21(5), ß = 83.48(5), 7 = 89.82(5)°, V = 1174 Ä 3, Z = 2) shows a dicationic titanium(IV) complex with five dimethylsulfoxide ligands and one oxygen atom. The two chlorine anions are not bonded to the complex cation. The T i0 6-fragment is a distorted octahedron, where five of the six oxygen atoms belong to the coordinated dimethylsulfoxide molecules. 
  Reference    Z. Naturforsch. 52b, 496—499 (1997); eingegangen am 23. Dezember 1996 
  Published    1997 
  Keywords    Titanium Oxo Complexes, Dimethylsulfoxide, Crystal Structure 
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 Identifier    ZNB-1997-52b-0496 
 Volume    52 
26Author    Ch Rabbow, S. Panzer, H.K M Üller-, Busch-BaumRequires cookie*
 Title    Röntgenstrukturanalyse von zwei Verbindungen des  
 Abstract    Kupfertyps BaMLn20 5 (M = Zn, Ln = Sm, Tm) und von BaSmAIZn30 7 X -R ay A nalysis of Two C om pounds of the C o p p er Type B aM L n20 5 (M = Z n, Ln = Sm, Tm) and of B aS m A lZ n 30 7 The barium zinc lanthanoide oxides BaZnSm20 5 (I) and BaZnTm20 5 (II) crystallize in the BaCuLn20 3 copper type with orthorhom­ bic symmetry, space group D^-Pnma, (I): a = 12.575(2), b = 5.804(1), c = 7.198(1) A and (II): a = 12.258(2), b = 5.684(1), c = 7.010(2) A, Z = 4. Zinc shows square pyramidal oxygen coordina­ tion, but the strong elongation of the C u 0 5 pyra­ mid in the copper type is missing. BaSmAlZn30 7 crystallizes in the space group C6V -P63mc, a = 6.346(1), c = 10.237(3) Ä, Z = 2. The metal coordi­ nation of oxygen and the shifts of the ratio Al : Zn at the sites (6c) and (2a) depending on the size of the lanthanoid ions are discussed. 
  Reference    Z. Naturforsch. 52b, 546—548 (1997); eingegangen am 30. Dezember 1996 
  Published    1997 
  Keywords    Barium, Rare Earth, Zinc, Aluminium, Oxide, Crystal Structure 
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 Identifier    ZNB-1997-52b-0546_n 
 Volume    52 
27Author    S. Meyer, Hk Müller-BuschbaumRequires cookie*
 Title    Kantenverknüpfte V 0 6-0ktaeder und P 0 4-Tetraeder in BaC a(V 0)(P04)2 Edge-Connected V 0 6 Octahedra and P 0 4 Tetrahedra in BaCa(V0)(P04)2  
 Abstract    Single crystals of the new compound BaCa(V0)(P04)2 have been prepared by solid state reactions below the melting point of the reactants in evacuated quartz tubes. X-ray investigations led to monoclinic symmetry, space group C2h-P2 i/c, a = 7.300(1), b = 7.053(1), c = 14.460(1) A, ß = 101,43(1)°, Z = 4. The crystal structure is characterized by layers of corner-and edge-connected P 0 4 tetrahedra and VO,+5 octahedra. There is an unusually short 0 (1)-0(4) distance in a V 0 6 octahedron of 2.44 A associated with the sharing of edges with P 0 4 tetrahedra. The short V-0 distance of 1.61 A indicates a vanadyl group. 
  Reference    Z. Naturforsch. 52b, 549—552 (1997); eingegangen am 25. Februar 1997 
  Published    1997 
  Keywords    Barium, Zinc, Vanadium Phosphate, Crystal Structure 
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 Identifier    ZNB-1997-52b-0549 
 Volume    52 
28Author    Tristram Chivers, Masood Parvez, Peter ZoricakRequires cookie*
 Title    Preparation and X-Ray Structure of 4-BrC6H4CNSC(Cl)N  
 Abstract    The title compound was obtained in 82% yield by the intramolecular cyclization of 4-BrC6H4C(NSCCl3)[N(SiMe3)2] in CH2CI2 at 23°C. It crystallizes in the triclinic system, space group PI, a = 7.957(3) Ä, b = 10.864(5) A, c = 5.625(1) A, a = 95.94(3)°, ß = 97.79(2)°, 7 = 100.72(3)°, V = 469.2(3) A3, and Z -2. The bond lengths of the planar C2N2S ring indicate partial 7r-delocalization. 
  Reference    Z. Naturforsch. 52b, 557—559 (1997); received September 5 1996 
  Published    1997 
  Keywords    Crystal Structure, 1, 2, 4-Thiadiazole, Intramolecular Cyclization 
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 Identifier    ZNB-1997-52b-0557 
 Volume    52 
29Author    Heiner Hückstädt, Heiner HomborgRequires cookie*
 Title    Synthese von Bis[pyridin-phthalocyaninato(l,5-)iridium(II)]iodid und Pyridin-iodo-phthalocyaninato(2-)iridium(III)-Pyridin durch schrittweise Oxydation von Bis[pyridin-phthalocyaninato(2-)iridium(II)]  
 Abstract    Synthesis of Bis[pyridine-phthalocyaninato(l,5-)iridium(II)] Iodide and Pyridine-iodo-phthalocyaninato(2-)iridium(III)-Pyridine by Successive Oxidation of Bis[pyridine-phthalocyaninato(2-)iridium(II)] Successive oxidation of bis[pyridine-phthalocyaninato(2-)iridium(II)] with iodine first yields mixed-valent bis[pyridine-phthalocyaninato(l,5-)iridium(II)] iodide ([(Ir(py)pc1 5'}2]I) and then pyridine-iodo-phthalocyaninato(2-)iridium(III)-pyridine ([Ir(py)(I)pc2_]-py). The latter crystallizes monoclinically with the following cell parameters: a = 10.258(1) A. b = 17.589(3) Ä, c = 19.723(2) Ä, ß = 92.95(1)°, space group P2j/n, Z = 4. Irm is in the centre of a slightly distorted pc2 ligand and coordinates pyridine and iodide in a fra/zs-arrangement. The average Ir-Niso distance is 1.995(5) A (Niso: isoindole N atom), the Ir-Npy and Ir-I distan­ ces are 2.102(5) and 2.657(1) A, respectively. By a similar oxidation of [{Rh(py)pc2 }2] only [Rh(py)(I)pc2~ ] py is obtained. Solid state spectral properties with diagnostic absorption bands at 1360. 1456, 5620 and 19800 cm-1 confirm the mixed-valent diphthalocyaninate(1.5-). 
  Reference    Z. Naturforsch. 52b, 728—734 (1997); eingegangen am 18. März 1997 
  Published    1997 
  Keywords    Phthalocyaninates, Iridium Compounds, Rhodium Compounds, Crystal Structure 
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 Identifier    ZNB-1997-52b-0728 
 Volume    52 
30Author    Hans Hartl, Michael HoyerRequires cookie*
 Title    Synthese und Strukturuntersuchungen von Iodocupraten(I), X V III. Darstellung und Kristallstruktur von PbCu2I4 * 2C H 3CN [1] Synthesis and Structure Investigations of Iodocuprates(I), X V III. Preparation and Crystal Structure of PbCu2I4 * 2C H 3CN [1]  
 Abstract    Single crystals of PbCu2I4-2(CH3CN) are formed by reaction of Pbl2 with Cul in ace-tonitril. The compound crystallizes in the mono­ clinic space group C2/m; a = 1625.8(3), b = 436.6(1), c = 1025.8(2)pm; ß = 94.77(3)°; V = 725.7 pm3 TO6; Z = 2. The crystal structure is built up by chains of trans-edge sharing ^[PbI6/3] octahe-dra and corner sharing ^[CuI-y^CH^CN)] tetra­ hedra connected by common I-I edges. 
  Reference    Z. Naturforsch. 52b, 766—768 (1997); eingegangen am 14. März 1997 
  Published    1997 
  Keywords    Iodometallates, Lead-Copper-Iodide, Synthesis, Crystal Structure 
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 Identifier    ZNB-1997-52b-0766_n 
 Volume    52 
31Author    R. Rettich, Hk Müller-BuschbaumRequires cookie*
 Title    Ein [Ba(Ca,Mn)06]-Gerüst mit eingelagerten V-O-V-Gruppen in der Kristallstruktur von Ba(Ca0,6Mn0,4)V20 7 A [Ba(Ca,Mn)06] Framework with Incorporated V-O-V Groups in the Crystal Structure of Ba(CaQ 6Mn0 4)V20  
 Abstract    Single crystals of Ba(Ca<).6Mn0 4)V20 7 have been prepared by crystallization from melts. X-ray investigations revealed a new quaternary vanadium oxide of the type BaMV20 7. The M positions are occupied statistically by Ca2+ and Mn2+. The compound crystallizes wi|h orthorhombic symmetry, space group D^-Pnma, a = 15.429(2), b -5.7005(12), c = 7.364(2) A, Z = 4. The crystal structure can be interpreted as a [Ba(Ca,Mn)06] network with incorporated V-O-V groups. Considering the nearest O2-neighbours of the incorporated vanadium, the V-O-V groups are complemented to give V20 7 divanadate units. Ba(Ca« 6Mn0 4)V20 7 is isotypic to BaMV20 7 (M=Ca,Cd) but not to BaMnV20 7. 
  Reference    Z. Naturforsch. 52b, 785—789 (1997); eingegangen am 14. April 1997 
  Published    1997 
  Keywords    Barium, Calcium, Manganese, Vanadium Oxide, Crystal Structure 
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 Identifier    ZNB-1997-52b-0785 
 Volume    52 
32Author    Bernd Schwarze, Wolfgang Milius, Wolfgang SchnickRequires cookie*
 Title    Synthese und Kristallstruktur von [(CXjSi^N^TiC^ -ein perchloriertes N-Silyl-titanamid Synthesis and Crystal Structure of [(Cl3Si)2N]2TiCl2 -a Fully Chlorinated N-Silyl Titanium Amide  
 Abstract    The chlorinated titanium amides [(Cl3Si)2N]2TiCl2 (1) and (Cl3Si)2NTiCl3 have been syn­ thesized selectively from hexachlorodisilazane lithium and TiCl4. The crystal structure of 1 was determined by single crystal X-ray methods at room temperature (P2|2j 2 |, a = 1232.4(2), b = 1265.5(2), c -1469.1(2) pm, Z = 4). The central titanium atom of 1 is bound to two nitrogen atoms and two Cl atoms and is weakly coordinated further by two Cl atoms of the trichlorosilyl groups. 
  Reference    Z. Naturforsch. 52b, 819—822 (1997); eingegangen am 1. April 1997 
  Published    1997 
  Keywords    N-Silyl Titanium Amides, Trichlorosilyl Groups, Crystal Structure, Titanium 
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 Identifier    ZNB-1997-52b-0819 
 Volume    52 
33Author    Joachim Pickardt, Sven WieseRequires cookie*
 Title    Reaktionen von Azacoronanden mit Quecksilber(II)iodid: Kristallstrukturen zweier Komplexe von Hgl2 mit Diaza-15-krone-5 und Diaza-18-krone-6 Reactions of Azacoronands with M ercury(II) Iodide: Crystal Structures of Two Complexes of H gl2 with Diaza-15-crown-5, and Diaza-18-crown-6  
 Abstract    The reactions of diaza-15-crown-5 ("2.1"), and diaza-18-crown-6 ("2.2"), resp., with H gl2 
  Reference    Z. Naturforsch. 52b, 847—850 (1997); eingegangen am 7. April 1997 
  Published    1997 
  Keywords    Crown Complexes, Mercuric Iodide, Crystal Structures 
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 Identifier    ZNB-1997-52b-0847 
 Volume    52 
34Author    Stephan Strojek, Martin JansenRequires cookie*
 Title    Darstellung und Kristallstruktur von P4 0 8 Preparation and Crystal Structure o f P4 Og  
 Abstract    P4O x was synthesized for the first time in a pure state. Its crystal structure has been refined using X-ray diffractometer datao (monoclinic, C2/c with a = 970.0(2); b = 1017.9(2); c = 692.3(1) pm; ß = 96.95(2)°; V = 678.5 A3; R ] = 0.033; wR2 = 0.073). Molecular geometry and packing in the solid state are discussed. 
  Reference    Z. Naturforsch. 52b, 906—910 (1997); eingegangen am 16. Mai 1997 
  Published    1997 
  Keywords    Tetraphosphorus Octaoxide, Preparation, Crystal Structure, Molecular Geometry 
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 Identifier    ZNB-1997-52b-0906 
 Volume    52 
35Author    Einar Möller, Joachim Sieler, Reinhard KirmseRequires cookie*
 Title    Synthese, Struktur-und EPR-Untersuchungen an 57Fe-markiertem Tetra- w-butylammonium-bis(l,l-dicyanoethen-2,2-dithiolato)nitrosyleisen(I), («-Bu4N)2 [57Fe(NO)(/-mnt)2] Synthesis, Structural, and EPR Investigations on 57Fe Enriched Tetra-n-butylammonium- bis(l,l-dicyanoethene-2,2-dithiolato)nitrosyliron(I), («-Bu4N )2[57Fe(NO)(/-mnt)2]  
 Abstract    The molecular structure and X-as well as Q-band EPR studies of tetra-«-butylammonium-bis(l,l-dicyanoethene-2,2-dithiolato)nitrosyliron(I) enriched with 57Fe are reported, (n-Bu4N)2[Fe(NO)(/-mnt)2] crystallizes triclinically, space group P i with a = 9,5147(7) A, b = 10,4841(8) A, c = 25,840(2) A, a = 92,510(1)°, ß = 92,895(1)°, 7 = 1 1 1 ,1 5 6 (1)° , Z = 2. The g and the hyperfine coupling tensors AN and AFe derived from the EPR spectra are rhombically-symmetric: g, = 2,043, g~> = 2 039, g3 = 2,031, A ,N = 13 ,8 1 0 ~ 4cm _ l , Ai N = 1 l ,6 1 0 _4cm _lI A3N = 15,2-10_4cm _T, A ,Fe = ll,4 -1 0 ~ 4cm _ l , A2Fe = 1 5 ,7 1 0 '4c m " r and A 3Fe = -2,6-10_4cm _1. The spin-density distribution within the first coordination sphere is discussed. 
  Reference    Z. Naturforsch. 52b, 919—926 (1997); eingegangen am 1. April 1997 
  Published    1997 
  Keywords    Nitrosyliron(I) Complexes, Crystal Structure, EPR Spectra 
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 Identifier    ZNB-1997-52b-0919 
 Volume    52 
36Author    M. Höhling, W. PreetzRequires cookie*
 Title    Synthesis and Crystal Structure of Tetraphenylarsonium Pentachlorocarbonylosmate(IV), (Ph4As)[OsCl5(CO)]  
 Abstract    The structure of tetraphenylarsonium pentachlorocarbonylosmate(IV), (Ph4As)[OsCl<;(CO)], the first example of a halogenocarbonyl complex with osmium in the oxidation state +IV, has been determined at 208oK by single crystal X-ray diffraction: tetragonal, space group P4/n with a = 12.821 , c = 8.084 A, Z = 2. There are short intermolecular contacts between neighbouring anions along the tetragonal axis c and unusually large displacement ellipsoids of the carbonyl group and the four equatorial Cl ligands arising from a positional disorder of the complex anion. By analogy with a variety of reported structures of the (Ph4As)[RuNCl4] structure type this is attributed to the close packing of the cation sublattice. Compared to other monocarbonylosmates the Os-C bond of 1.94(2) A is extraordinaryly long while the bond between Os and the trans coordinated Cl ligand of 2.286(3) A is rather short. 
  Reference    Z. Naturforsch. 52b, 978—980 (1997); received June 2 1997 
  Published    1997 
  Keywords    Pentachloromonocarbonylosmate(IV), Crystal Structure, Positional Disorder 
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 Identifier    ZNB-1997-52b-0978 
 Volume    52 
37Author    S. Meyer, Hk Müller-BuschbaumRequires cookie*
 Title    Kurze O-O-Abstände einer gemeinsamen Polyederkante bei Verknüpfung von P 0 4-Tetraedern mit V 0 6-0ktaedern im Vanadyl-Orthophosphat C aN i(V 0)(P04)2 Short 0 -0 Distances in Edge Sharing P 0 4 Tetrahedra and V 0 6 Octahedra o f the Vanadyl- Orthophosphate C a N i(V 0 )(P 0 4)2  
 Abstract    Single crystals of the new compound C aN i(V 0)(P 04)2 have been prepared by solid state reactions below the melting point of the oxide mixture in evacuated quartz tubes. X-ray inve­ stigations ledoto orthorhom bic symmetry, space group D2£-Pnma, a -14.113(1), b -6.408(1), c = 7.364(1) A, Z = 4. The crystal structure shows J. [N i0 4] and J. [V 0 6P20 3] polyhedra chains closely related to analogous chains in the isotypic compound CdV20 (P 0 4)2. The short V -0 distance of 1.66 A indicates a vanadyl group as the main difference to CdV20 (P 0 4)2. The short 0 -0 distance of 2,395 A of the edge-sharing P 0 4 tetrahedra and V 0 6 octahedra is discussed. 
  Reference    Z. Naturforsch. 52b, 981—984 (1997); eingegangen am 12. Mai 1997 
  Published    1997 
  Keywords    Calcium, Nickel, Vanadium Phosphate, Crystal Structure 
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 Identifier    ZNB-1997-52b-0981 
 Volume    52 
38Author    B. Mertens, Hk Müller-BuschbaumRequires cookie*
 Title    Uber ein cadmiumreiches Orthovanadat Ba2,5Cd11(V 04)9 mit Cadmium in oktaedrischer und tetragonal pyramidaler Koordination On a Cadmium Rich Orthovanadate Ba-, 3Cd, |( V 0 4)9 Showing Cadmium in Octahedral and Square Pyramidal Coordination  
 Abstract    Single crystals of Ba2 ^C di^V O ^g have been prepared by solid state reactions. The new compound crystallizes with orthorhombic symmetry, space group D ^-Pbcn, a = 20.842(6), b = 13.471(3), c = 11.838(9) A, Z = 4. The crystal structure is characterized and dominated by C d 0 6 octahedra and unusual square pyramids of 0 2~ around Cd2+ forming a three-dimensional [C d ]|0 36] network. The interstices are occupied by V 5+ and Ba2+ ions. This results in V 0 4 tetrahedra and irregular BaO 10 polyhedra isolated from each other. Occupation of the barium positions is deficient in agreement with the valence state V5+ and calculations of the coulomb terms of lattice energy. 
  Reference    Z. Naturforsch. 52b, 989—993 (1997); eingegangen am 26. Mai 1997 
  Published    1997 
  Keywords    Barium, Cadmium, Vanadium Oxide, Crystal Structure 
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 Identifier    ZNB-1997-52b-0989 
 Volume    52 
39Author    Requires cookie*
 Title    Synthese und Eigenschaften von fra/zs-Bisnitro-phthalocyaninato(2-)iridat(III) und Pyridin-nitro-phthalocyaninato(2-)iridium(III)  
 Abstract    Kristallstruktur von linear-Bis(triphenylphosphin)iminium-fra/is-Bisnitro-phthalocyaninato(2-)iridat(III) S y nthesis a n d P ro p e rtie s o f /raA zs-B isn itro -p h th alo cy a n in ato (2 -)irid a te (III) an d P y rid in e -n itro -p h th a lo c y a n in a to (2 -)irid iu m (III); C ry sta l S tru c tu re o f linear-B is (trip h e n y lp h o sp h in e)im in iu m /ra « 5 -B isn itro -p h th a lo c y a n in a to (2 -)irid a te (III) H e in e r H ü c k stä d t, H e in e r H o m b o rg * Reaction of bis[phthalocyaninato(2-)iridium(II)] ([(Irpc2")2]) with nitric oxide in pyridine yields nitrosyl-containing intermediates that are immediately oxidized by air yielding pyri-dine-nitro-phthalocyaninato(2-)iridium(III) ([Ir(py)(,/V02)pc2 ]). Linear-bis(triphenylphos-phine)iminium frans-bisnitro-phthalocyaninatoiridate(III) (l(PNPy™,,v[Ir(/V02)2pc2"]) is pre­ pared by air-oxidation of [(Irpc2')2] in dichloromethane in the presence of (P N P)N 0 2. It crystallizes in the triclinic space group P I (no. 2) with the following cell parameters: a -10.649(1) Ä, b = 12.357(1) A, c = 12.841(1) A, a = 75.47(1)°, ß = 67.88(1)°, y = 65.31(1)°, Z = 1. Ir111 is in the centre of a slightly waving pc2~ ligand coordinating two nitro ligands in an eclipsed fram-arrangement. The average Ir-Niso distance is 1.993(2) A (N iso: isoindole N atom), the Ir-N distance is 2.189(3) A (N: nitrite N atom), respectively. The structural data of the nitrite ion are: d(ZV-O) = 1.194(4) and 1.042(5) A, Z(O -N -O) = 131.7(4)°). Spectral properties with diagnostic IR absorption bands at 820, 1331 and 1398 cm -1 confirm the nitro coordination. 
  Reference    Z. Naturforsch. 52b, 1003—1010 (1997); eingegangen am 6. Juni 1997 
  Published    1997 
  Keywords    Phthalocyaninates, Iridium Compounds, Nitro Compounds, Crystal Structure 
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 Identifier    ZNB-1997-52b-1003 
 Volume    52 
40Author    Ho, Er, Ho Dy, Er, Y. O. Sfreddo, Hk Müller-BuschbaumRequires cookie*
 Title    Weitere Verbindungen des Bai7Lnj6Zn8Pt4057-Typs mit Ln = Dy More Compounds of the B a17Ln16Zn8Pt40 57 Type with Ln =  
 Abstract    Single crystals of B a|7D y16Zn8Pt40 57 (I), Ba17HO|6Zn8Pt40 57 (II), BaI7Er16Zn8Pt4057 (III) and Ba17Y 16Zn8Pt40 57 (IV) have been prepared by high temperature reactions using platinum crucibles. X-ray investigations led to tetragonal symmetry, space group C4h -I4/m, (I) -(IV): a = 22.905(1), 22.840(1), 22.795(1), 22.848(1) Ä and c = 5.728(1), 5.722(1), 5.700(1), 5.709(1) A, Z = 2. The crystal structure is characterized by small square, medium-sized quadrangular and large rectangular tunnels, which are filled by oxygen, barium and zinc. The polyhedra network is discussed with respect to the network of compounds of the Ba13D y8Zn4Pt40 37 type. 
  Reference    Z. Naturforsch. 52b, 1067—1071 (1997); eingegangen am 6. Mai 1997 
  Published    1997 
  Keywords    Barium, Rare Earth, Zinc, Platinum, Crystal Structure 
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 Identifier    ZNB-1997-52b-1067 
 Volume    52 
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