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Facet   Publication Year 1996  [X]
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1996[X]
1Author    Rolf Minkwitz, RaimUnd Bröchler, Hans PreutRequires cookie*
 Title    Low-Temperature Crystal Structure of the Inclusion Compound {[N(CH3)4+C1]2] * CH 3CN * h 2o  
 Abstract    The crystal structure of {[N(CH3)4+C1]2}-CFI3C N H 20 is reported. Cry-stalls are orthorhombic, space group Pnma, with a = 1622.9(15), b = 671.3(6), c = 1511.2(11) pm, V = 1646(2) 106 pm3 and Z = 4. 
  Reference    Z. Naturforsch. 51b, 599—601 (1996); eingegangen am 3. August 1995 
  Published    1996 
  Keywords    Preparation, Crystal Structure, Inclusion Compound 
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 Identifier    ZNB-1996-51b-0599_n 
 Volume    51 
2Author    Karl Peters3, Eva-Maria Peters3, Gerhard Bringmannb, Sven HarmsenbRequires cookie*
 Title    l,4-Dibromonaphthalene-2,3-diyI- bis(l'-bromo-2'-naphthoate) * CHC13, a Potential Precursor to Lactone-Bridged Teraryls  
 Abstract    The title compound was prepared from 1,4-di-bromo-2,3-dihydroxynaphthalene by two-fold es-terification with l-bromo-2-naphthoic acid. It crystallizes from chloroform in the triclinic sys­ 
  Reference    Z. Naturforsch. 51b, 144—146 (1996); received June 20 1995 
  Published    1996 
  Keywords    Crystal Structure, Biaryl Coupling, Teraryls 
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 Identifier    ZNB-1996-51b-0144_n 
 Volume    51 
3Author    D. Frerichs, C. H. Park, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis der Tief-und Hochtemperaturform eines Oxidarsenats des Zinks: Zn0Z n3(A s0 4)2 On the Low and High Temperature Form o f an Oxidearsenate of Zinc: Z n 0 Z n 3( A s 0 4)2  
 Abstract    Single crystals of the low (t-) and high (h-) temperature form o f Z n 0 Z n 3(A s 0 4)2 have been prepared by flux and by C 0 2-L A SER techniques respectively. Both compounds crystal­ lizes monoclinic, space group C2h-P2;/n with the lattice parameters t-Z n 0 Z n 3(A s 0 4)2: a = 9.807(3), b = 8.180(2), c = 9.967(2) A , ß = 116.53(2)°, Z = 4 and h -Z n 0 Z n 3(A s 0 4)2: a = 9.743(3), b = 8.163(8), c = 17.933(2) A , ß = 91.55(2)°, Z = 8. Similarities and differences of the crystal structures will be discussed. 
  Reference    Z. Naturforsch. 51b, 233 (1996); eingegangen am 10. Juli 1995 
  Published    1996 
  Keywords    Zinc, Arsenic, Oxide, Crystal Structure 
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 Identifier    ZNB-1996-51b-0233 
 Volume    51 
4Author    Silke Busche, K. Arsten BluhmRequires cookie*
 Title    Synthese und Kristallstruktur von Dibariumzink-bis(cyclotriborat) Ba2Zn(B30 6)2  
 Abstract    Single crystals of the new compound Ba2Zn(B30 6)2 were obtained by using a B20 3 flux technique. They crystallize in an as yet unknown structure type. X-ray investigations led to space group Cj'-Pl (Nr.2) with lattice parameters a = 715.5(2), b = 720.5(2), c = 1178.9(4), a = 78.96(2)°, /3 = 85.45(2)°, j = 60.12(1)°, Z = 2. The structure is characterized by iso­ lated (B30 6)3_-rings and contains two ninefold coordinated Ba-sites. Zn2+ is tetrahedrally coordinated by oxygen. The relation to the crystal structures of high-temperature BaB20 4 and Ba2Ca(B30 6)2 is discussed. 
  Reference    Z. Naturforsch. 51b, 309—312 (1996); eingegangen am 26. September 1995 
  Published    1996 
  Keywords    Barium, Zinc, Borate, Crystal Structure 
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 Identifier    ZNB-1996-51b-0309 
 Volume    51 
5Author    D. Frerichs, C. H. Park, HkM. Üller-B, UschbaumRequires cookie*
 Title    Zur Kenntnis zweier Formen des Zinkorthoarsenates: a-Z n 3(A s04)2 und /3-Zn3(A s0 4)2 On Two Forms o f Zinc O rthoarsenate: a -Z n 3(A s 0 4)2 and /3-Zn3(A s 0 4)2  
 Abstract    Single crystals of two forms of zinc orthoarsenate (a-Z n3(A s04)2 (I) and /3-Zn3(A s04)2 (II)) have been prepared by flux techniques. Both compounds crystallize monoclinically, space groups (I): Cih-P2l/c, (II): Cih-P21/n, with the lattice parameters (I): a = 6.306(2), b = 8.652(2), c = 'ol 1.321(4) A, ß = 92.25(5) °, Z = 4 and (II): a = 5.281(1), b = 8.494(2), c = 7.726(3) A, ß = 96.39(3)°, Z = 2. ct-Zn3(A s04)2 is isotypic to I-Cu3(A s04)2 and ß-Zn3(A s04)2 to 7-Zn3(P 0 4)2. Similarities and differences of the crystal structures are discussed. 
  Reference    Z. Naturforsch. 51b, 333—337 (1996); eingegangen am 31. August 1995 
  Published    1996 
  Keywords    Zinc, Arsenic, Oxide, Crystal Structure 
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 Identifier    ZNB-1996-51b-0333 
 Volume    51 
6Author    Karl Peters3, Eva-M Aria Peters3, G.Erhard Bringmannb, O. La, F. SchuppbRequires cookie*
 Title    l,3-Dimethoxy-677- benzo[b]naphtho[l,2-d]pyran-6-thione, a Thionolactone-Bridged Axially Prostereogenic Biaryl  
 Abstract    The title compound was prepared from the cor­ responding " ordinary" oxolactone bridged biaryl using Lawesson's reagent. It crystallizes from di-chloromethane / petroleum ether in the mono­ clinic system, space group P2xla; a = 1115.7(2), 
  Reference    Z. Naturforsch. 51b, 431—432 (1996); received September 9 1995 
  Published    1996 
  Keywords    Crystal Structure, Stereochemistry, Biaryl Coupling 
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 Identifier    ZNB-1996-51b-0431_n 
 Volume    51 
7Author    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 
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 Identifier    ZNB-1996-51b-0489 
 Volume    51 
8Author    Na2z, New Sodium, ZincateD. Trinschek, M. JansenRequires cookie*
 Title    Na2Zn02, ein neues Natriumzinkat  
 Abstract    By reacting Na20 , which was produced in situ from NaN3 and NaN02, with reactive ZnO in the solid state, the synthesis of Na2Z n02 has been achieved. Na2Zn02 is metastable up to about 750°C. The novel sodium zincate crystallizes in the spaceogroup P2,/c (No. 14) with the lattice parameters a = 7.7352(2), b = 5.9782(2), c = 5.7248(2)Ä, ß = 94.934(3)°, Z = 4. According to a single crystal structure determination it is an representative of the anti type of the Ln2S20 (Ln = Er, Tm, Yb, Dy) structure. 
  Reference    Z. Naturforsch. 51b, 711—714 (1996); eingegangen am 10. August 1995 
  Published    1996 
  Keywords    Sodium Zincates, Crystal Structure, Metastability 
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 Identifier    ZNB-1996-51b-0711 
 Volume    51 
9Author    Z. NaturforschRequires cookie*
 Title    A -P r 2S3, D -H o2S3 und E -Y b 2S3: Synthese und Einkristallstrukturuntersuchungen  
 Abstract    The oxidation of reduced chlorides (MC12) or chloride-hydrides (MC1HV) of the lanthani­ des with sulfur (700-850 °C, 7 d, sealed tantalum capsules or evacuated silica vessels) usually results in the formation of the sesquisulfides M2S3 as the main products. In the presence of appropriate fluxes (e.g., alkali halides), the products often are obtained as single crystals, and the flux decides which modification is favoured. Ternary halides of the trivalent lanthanides with the corresponding alkali metal can mostly be found as the second components. Crystal growth and structural investigations of thus produced single crystals of Pr2S3 (from PrClH() 67 + S + NaCl, 5:5:1, A type: orthorhombic, Pnma (No. 62), Z = 4, a = 748.22(5), b = 405.51(3), c = 1560.74(9) pm, R = 0.024, Rw = 0.020), Ho^S, (from U -H o^S , + KI, 1:1, D type: mono­ clinic, P 2xim (No. 12), Z = 6, a = 1746.15(9), b = 400.23(3), c = 1012.43(6) pm, ß = 98.529(4)°, R = 0.041, Rw = 0.035), and YbiS3 (from T-Yb^S^ + KI, 1:1, E type: trigonal, R 3c (No. 167), Z = 6, a = 674.97(2), c = 1820.11(9) pm'. R = 0.019, Rw = 0.018) are reported here. In accordance with the lanthanide contraction, the trivalent cations (M3+) exhibit sulfur coordination numbers of 7 and 8 in A -P r 2S3, 6 and 7 in D -H o 2S3, and 6 in E -Y b 2S3 (corundum-type structure). 
  Reference    Z. Naturforsch. 51b, 733—738 (1996); eingegangen am 4. Oktober 1994 
  Published    1996 
  Keywords    Lanthanides, Sesquisulfides, Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-0733 
 Volume    51 
10Author    H. V., A. Fischerb, P. G. JonesbRequires cookie*
 Title    Eine unerwartete Synthese des Triphenyphosphazenium-chlorids, [(C6H5)3PNH2]+CI_ und eine Neubestimmung seiner Kristallstruktur  
 Abstract    Triphenylphosphazenium chloride has been prepared by the reaction of triphenylphos-phine with trimethylsilylazide in impure, wet dichloromethane. Yields are improved as stoi­ chiometric quantities of w ater are added. Colourless crystals are obtained by recrystallization from the same solvent. The crystals are triclinic, space group P I, Z=2, a = 894,6(3), b -979,8(3), c = 1142,9(4) pm, a = 107,27(3), ß = 93,70(3), y = 92,97(3)°. In the solid state the compound exists as [(C6H 5)3PNH2]+ cations, and Cl-anions. Dimeric units are formed by H-bonding. The crystal structure contains one molecule CH 2C12 per one molecule (C6H 5)3PNH2C1. The cation has a slightly irregular tetrahedral geometry around the P-atom with a relatively short P-N bond. 
  Reference    Z. Naturforsch. 51b, 865—868 (1996); eingegangen am 21. O ktober 1995 
  Published    1996 
  Keywords    Triphenylphosphazenium Chloride, Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-0865 
 Volume    51 
11Author    Wolfgang Czado, Ulrich MüllerRequires cookie*
 Title    (PPh4)4Sb8Br28 Tetraphenylphosphonium Ikosioctabromooctaantimonate(III), (PPh4)4Sb8Br28  
 Abstract    The title compound was obtained by the reaction of PPh4Br, Sb2Se3, and bromine in dichloro-methane. Its crystal structure was determined by X-ray diffraction. Crystal data: a = 1249.1(2), b = 1307.8(2), c = 2152.3(4) pm, a = 102.93(2), ß = 100.83(2), 7 = 100.42(2)°, Z = 2, triclinic, space group P I . (PPh4)4Sb8Br28 is isotypic with (PPh4)4Sb8I28. The Sb8Br284~ ion can be taken as the association product of eight SbBr3 molecules with four B r-ions. Each Sb atom has a distorted octahedral coordination with three shorter (252 to 274 pm) and three longer (300 to 353 pm) Sb-Br bonds. The octahedra share common edges in two parallel rows of four octahedra each. The arrangement of the 28 bromine atoms corresponds to a section of a closest packing of spheres. Tetraphenylphosphonium-ikosioctabromooctaantimonat(III), 
  Reference    Z. Naturforsch. 51b, 1245—1247 (1996); eingegangen am 22. März 1996 
  Published    1996 
  Keywords    Ocataikosabromooctaantimonate, Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-1245 
 Volume    51 
12Author    Joachim Pickardt, B. Ritta KühnRequires cookie*
 Title    Metallkomplexe mit Guanidinderivaten als Liganden  
 Abstract    Kristallstrukturen von [Zn(cnge)2(SCN)2] 2H20 und Zn(eoge)Br2 (enge = Cyanoguanidin; eoge = 1-Ethoxyiminomethylguanidin) M etal C om plexes with G uanidine D erivatives as Ligands: Crystal Structures o f [Zn(cnge)2(SC N)2]-2H20 und Z n(eoge)B r2 (cnge = C yanoguanidine; eoge = 1-Ethoxyim inom ethylguanidine) Crystals of |Zn(cnge)2(SCN)2]-2H20 (1) were obtained by evaporation of an aqueous solution 
  Reference    Z. Naturforsch. 51b, 1469—1472 (1996); eingegangen am 3. April 1996 
  Published    1996 
  Keywords    Cyanoguanidine, Zinc Complexes, Crystal Structures 
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 Identifier    ZNB-1996-51b-1469 
 Volume    51 
13Author    StefanH. Orstm, AnnW. Olfgang SchnickRequires cookie*
 Title    Synthese  
 Abstract    , K rista llstru k tu r und Eigenschaften von 1 ,1 , 1 > 3 * 3 , 3 -H e x a a m i n o -lA 5,3A5-diphosphazenium ehlorid[(N H 2)3PNP(NH2)3]Cl Synthesis, C rystal Structure, and Properties of 1,1,1,3,3,3-Hexaam ino-1 A5,3A5-diphosphazenium Chloride [(N H 2)3PN P(N H 2)3]C1 [(NH2)3PNP(NH2)3 ]C1 has been prepared by a three step synthesis. The last step is the ammo-nolysis of [C13PNPC13]C1. Single crystals of 1,1,1,3,3,3-hexaamino-1 A \ 3As-diphosphazenium chloride were obtained from an acetonitrile solution in a temperature gradient between 60 °C and room temperature. Between room temperature and -1 0 0 °C [(NH2)3PNP(NH2)3]C1 is sub­ ject to a phase transition. Therefore, the crystal structure was determined by single crystal X-ray methods at room temperature (P i, a = 584.7(1) pm, b = 732.1(1) pm, c = 1092.0(2) pm. q = 71.05(3)°, ß = 76.36(3)°, 7 = 89.83(3)°, Z = 2, R = 4.75 %, wR = 2.47 %). The cation [(NH2)3PNP(NH2)3]+ is built up by two corner sharing PN4 tetrahedra. Remarkably short P-N bonding distances have been observed and both PN4 tetrahedra exhibit a significant distortion resulting in two large and four small N-P-N bond angles. 
  Reference    Z. Naturforsch. 51b, 1732—1738 (1996); eingegangen am 26. Juni 1996 
  Published    1996 
  Keywords    Aminophosphazenes, Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-1732 
 Volume    51 
14Author    G. Rebe, Frank Weller, Kurt Dehnicke, ProfRequires cookie*
 Title    Jutta  
 Abstract    N-Iodo-triphenylphosphaneimine, Ph3PNI, has been prepared by thermolysis of the donor acceptor complex [Me3SiNPPh3-ICl] in boiling acetonitrile in the presence of potassium fluo­ ride. Both compounds have been characterized by IR spectroscopy and by crystal structure determinations. [Me3SiNPPh3 ICl]: Space group P I, Z = 2, a = 888.3(1), b = 1070.7(1), c = 1310.2(1) pm, a = 9 5 .15(1)°, ß = 108.67(1)°, 7 = 97.78(1)° at 20°C. The complex has a molecular structure in which the N atom of the phosphaneimine is connected with the iodine atom of the IC1 molecule in a linear arrangement N-I-Cl with bond lengths N-I = 232.7 pm, I-Cl = 255.37 pm. Ph3PNI: Space group P2,/n, Z = 4, a = 952.8(1), b = 1800.8(2), c = 1003.6(1) pm, ß = 110.25(1)° at -50°C. The compound forms monomeric molecules with bond lengths PN = 159.1 pm, I-N = 205.6 pm and an INP bond angle of 113.3°. N-Iod-triphenylphosphanimin. Synthese und Kristallstrukturen von [Me3SiNPPh3 ICl] und Ph3PNI 
  Reference    Z. Naturforsch. 51b, 1739—1743 (1996); eingegangen am 12. April 1996 
  Published    1996 
  Keywords    Phosphaneimine Complexes, Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-1739 
 Volume    51 
15Author    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 
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 Identifier    ZNB-1996-51b-0525 
 Volume    51 
16Author    Thomas Kräuter, Bert Werner, Bernhard NeumüllerRequires cookie*
 Title    Synthese  
 Abstract    und Eigenschaften von Benzylgallium(indium)-Verbindungen. Die Kristallstrukturen von [(PhCH2)2GaBr]2, [(PhCH2)2GaN(H)f-Bu]2 und [PhCH2InCl2(THF)2] Synthesis and Properties o f Benzylgallium(indium) Compounds. The Crystal Structures o f [(PhCH2)2GaBr]2, [(PhCH2)2GaN(H)r-Bu]2 and [PhCH2InCl2(THF)2] (PhCH2)2GaBr (1) can be obtained by the redistribution reaction of GaBr3 with Ga(CH2Ph)3 in a molar ratio 1:2. Treatment of 1 or (PhCH2)2GaCl with one equivalent of LiN(H)/-Bu gives the diorganogallium amide [(PhCH2)2GaN(H)r-Bu]2 (2). The toluene-insoluble PhCH2InCl2 can be structurally investigated after dissolving in THF and crystallization as [PhCH2InCl2(THF)2] (3). 1 -3 were characterized with NMR, IR and MS techniques as well as by X-ray structure determinations. 1 forms two crystallographic independent dimers while 2 is a centrosymmetric dimer in the solid state. 3 is a monomer with a trigonal-bipyramidal coordination sphere at the indium center. 
  Reference    Z. Naturforsch. 51b, 637—645 (1996); eingegangen am 14. September 1995 
  Published    1996 
  Keywords    Gallium Compounds, Indium Compound, Crystal Structure 
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 Identifier    ZNB-1996-51b-0637 
 Volume    51 
17Author    KarstenF. Ischerl, F. Eldbaum-M, Petra Öller1, M. Vogta, W. Ichael, VolkerW. Achholdb, H. Inter11, Orst SabrowRequires cookie*
 Title    Die Kristallstruktur von CsNaTe The Crystal Structure o f CsNaTe  
 Abstract    The crystal structure of CsNaTe has been determined by X-ray diffraction of single crystals. The hygroscopic CsNaTe crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a = 527.6(1) and c = 847.8(2) pm. The structure was determined from 237 independent reflections by Patterson and Fourier methods {R] = 0.065; wR2 = 0.080). 
  Reference    Z. Naturforsch. 51b, 1576—1578 (1996); eingegangen am 10. Mai 1996 
  Published    1996 
  Keywords    Cesium, Sodium Ternary Tellurides, Crystal Structure 
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 Identifier    ZNB-1996-51b-1576 
 Volume    51 
18Author    M. Itra, G. Hassem Zadeha, JörgM. Agullb, D. Ieter Fenskeb, KurtD. EhnickeaRequires cookie*
 Title    PPh4[Cl-I-C6H5] und PPh4[Br-I-C6H5] Iodobenzene as Lewis-Acid: Synthesis and Crystal Structures of PPh4[Cl-I-C6H5] and PPh4[Br-I-C6H 5]  
 Abstract    The donor-acceptor complexes [X-I-C6H5]~ with X" = Cl-and Br-have been prepared as tetraphenylphosphonium salts from iodobenzene and PPh4X in acetonitrile solutions. They form colourless single crystals, which were characterized by crystal structure determinations. PPh4[Cl-I-C6H5]: Space group P2,/c, Z = 4. Lattice dimensions at -70°C: a = 1301.1(5), 
  Reference    Z. Naturforsch. 51b, 1579—1582 (1996); eingegangen am 18. Juni 1996 
  Published    1996 
  Keywords    Halide Complexes of Iodobenzene, Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-1579 
 Volume    51 
19Author    M. M. Om, K. D. Ertza, Ehnickea ', J. M. AgullbRequires cookie*
 Title     
 Abstract    Colourless single crystals of the title compound are obtained from a saturated solution of NaOSiPh, in toluene in a humid atmosphere. We have characterized [N a ^ O S iP h ^ H iO),] by IR spectroscopy and by a crystal structure determination. Space group R3, Z = 6 , R -0.056. Lattice dimensions at -70°C: a -b = 1540.3 pm, c = 2639.6 pm. The compound has the structure of a Na40 4 heterocubane which is only slighty distorted and in which one of the sodium atoms is not hydrated and shows coordination number three. Die Kristallstruktur von [Na4(0SiPh3)4(H20)3] 
  Reference    Z. Naturforsch. 51b, 1583—1586 (1996); eingegangen am 9. Juli 1996 
  Published    1996 
  Keywords    Sodium Triphenylsilanolate Hydrate, Synthesis, Crystal Structure 
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 Identifier    ZNB-1996-51b-1583 
 Volume    51 
20Author    Z. NaturforschRequires cookie*
 Title    Über ein Blei-Kupfer-Tellurat PbC^TeOy mit Cu2+ in deformiert tetragonal pyramidaler und tetraedrischer Sauerstoffkoordination  
 Abstract    On a Lead C opper Tellurate P b C u 3T e 0 7 Containing C u2+ in D istorted Square Pyram idal and Tetrahedral O xygen C oordination B. W edel, Hk. M üller-B uschbaum * PbCu3T e07 has been prepared from the element oxides by solid state reaction in air. Single crystal X-ray work led too orthorhombic symmetry, space group D^-Pnma, a = 10.488(1), b = 6.353(2), c = 8.813(2) A, Z = 4. Cu(1)0 5 square pyramids and Te06 octahedra are members of the anionic part of the crystal structure, Cu(2) atoms show tetrahedral coordination by oxygen. The C u (2)2+ and the Pb2+ cations are incorporated into a [Cu(l)2Te07] network. PbCu,Te07 can thus be viewed as a lead copper oxocuprate(II) tellurate. Calculations of the Coulomb terms of lattice energy reveal two possible positions for the lone pair of electrons at Pb'+. 
  Reference    Z. Naturforsch. 51b, 1587—1590 (1996); eingegangen am 21. Mai 1996 
  Published    1996 
  Keywords    Lead, Copper, Tellurium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1587.pdf 
 Identifier    ZNB-1996-51b-1587 
 Volume    51 
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