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21Author    Andreas Mommertz, Gertraud Geiseier, Klaus Harms, Kurt DehnickeRequires cookie*
 Title    Kristallstrukturen von Me2Si[N(SiMe3)2]2 und [Me2Si(NPh)(NHPh)LiOEt2]2 Crystal Structures of Me2Si[N(SiM e3)2]2 and [Me2Si(NPh)(NHPh)Li-OEt2]2  
 Abstract    The crystal structures of the title compounds are reported. Me2Si[N(SiMe3)2]2 : Space group Pbcn, Z = 4, lattice dimensions at 213 K: a = 1487.8(1), b = 1299.4(1), c = 1259.7(1) pm. The compound forms monomeric molecules with crystallographic C2 symmetry and Si-N bond lengths of 177.9(3), 171.6(3) and 175,2(3) pm. [Me2 Si(NPh)(NHPh)Li OEt2]2: Space group P2]/n, Z = 2, lattice dimensions at 190 K: a = 1082.7(3), b = 1038.8(2), c = 1641.3(4) pm, ß = 91.350(3)°. The compound forms centrosymmetric dimeric molecules in which the lithium atoms are members of a Li2N2 ring with Li-N bond lengths of 206.6(2) and 213.5(2) pm. The hydrogen atom at the nitrogen atom of the HNPh~ group is not involved in hydrogen bridging bonds. 
  Reference    Z. Naturforsch. 53b, 977—980 (1998); eingegangen am 29. Mai 1998 
  Published    1998 
  Keywords    Silylamine, Lithium Amide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0977.pdf 
 Identifier    ZNB-1998-53b-0977 
 Volume    53 
22Author    Z. NaturforschRequires cookie*
 Title    Pentacoordinated Nitrogen Atoms in the Structure of Hexalithium Bis[methylsilyl-tris(methylimide)] Hexakis(tetrahydrofuran)  
 Abstract    Lithiation of tris(methylamino)wt'f/7v/silane using an excess of n -butyllithium affords the cor­ responding trifunctional lithium amide in high yield. The compound crystallizes from tetrahy-drofuran as a dimer with six donor molecules: {[M eSi(NM eLi)3]2(thf)6}. The cluster is a cage structure grouped around a crystallographic center of inversion. The silicon and lithium atoms are tetrahedrally tetracoordinated, but the nitrogen atoms are pentacoordinated and have a square pyramidal environment of one carbon, one silicon, and three lithium atoms. Parallels can be drawn to other species with polymetallated nitrogen functions. An analogous compound was prepared from tris(methylamino)vwv/silane. 
  Reference    (Z. Naturforsch. 54b, 8—12 [1999]; received September 1 1998) 
  Published    1999 
  Keywords    Silylamines, Silylamides, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0008.pdf 
 Identifier    ZNB-1999-54b-0008 
 Volume    54 
23Author    Joachim Pethe, Joachim SträhleRequires cookie*
 Title    Synthese und Kristallstruktur von [Au(AuNCO)(AuPPh3)8]Cl Synthesis and Crystal Structure of [Au(AuNCO)(AuPPh3)8]Cl  
 Abstract    The photolysis of Cr(CO)6 and Ph3PAuN3 (1:2) in thf yields the unstable cluster cation [(Ph3PAu)5Cr(CO)4]+ that slowly decomposes to form the new homometallic gold cluster [Au(AuNCO)(AuPPh3)8]Cl. The cluster compound crystallizes in form of red needles in the tetragonal space group 14 with a = 2214.1(3), c = 1408.9(2) pm, and Z = 2. The inner skeleton of the cluster with the symmetry C4 consists of a centered square antiprism of nine Au atoms with the square faces of the antiprism being bridged by the AuNCO group, and a C P anion, respectively. The shortest Au-Au distances exist between the central and the 8+1 peripheral Au atoms ranging between 263.5(1) and 270.6(3) pm, the four Au-Cl distances are 280(1) pm. 
  Reference    Z. Naturforsch. 54b, 381—384 (1999); eingegangen am 3.Dezember 1998 
  Published    1999 
  Keywords    Gold Cluster, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0381.pdf 
 Identifier    ZNB-1999-54b-0381 
 Volume    54 
24Author    M. Ludwig3, R. Niewab, R. KniepRequires cookie*
 Title    Dimers [A12N6]12-and Chains J j A lN ^ ] in the Crystal Structures of Ca6[Al2N6] and Ba3[Al2N4]  
 Abstract    Pale yellow transparent single crystals of Ca6[Al2Nö] (P 2\/c, No. 14, a = 693.7(3), b = 614.9(3), c = 987.1(5) pm, ß = 94.01(5)°; Z = 4) and colourless transparent single crystals of Ba.^ALN*] (Pnna, No. 52, a = 617.9(2), b = 1005.2(4), c = 1023.0(4) pm; Z = 4) were obtained from reactions of mixtures of the representative metals with nitrogen at Tmax = 1000 °C. The crystal structure of CaöfALNft] contains isolated units [ALNftJ12-built of two edge-sharing tetrahedra. Ba3[ALN4] is an isotype of S r^A bN ^. The crystal structure contains infinite chains ^ [A1N^T2] of trans edge-sharing tetrahedra. 
  Reference    Z. Naturforsch. 54b, 461—465 (1999); received December 18 1998 
  Published    1999 
  Keywords    Nitridoaluminates, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0461.pdf 
 Identifier    ZNB-1999-54b-0461 
 Volume    54 
25Author    MarkusF. Zumdick, Rainer PöttgenRequires cookie*
 Title    Condensed [Ru4Sn6] Units in the Stannides LnRu4Sn6 (Ln = La, Pr, Nd, Sm, Gd) -Synthesis, Structure, and Chemical Bonding  
 Abstract    The stannides LnRu4Sn6 (Ln = La, Pr, Nd, Sm, Gd) were prepared by reaction of the elements in an arc-melting furnace and subsequent annealing at 1120 K. The praseodymium, the neodymium, and the samarium stannide were obtained for the first time. The LnRu4Sn6 stannides were investigated by X-ray diffraction both on powders and single crystals. They adopt the YRu4Sn6 type structure which was refined from single crystal X-ray data for the samarium and the gadolinium compound: /42m, a = 686.1 (1), c = 977.7(2) pm, wR2 = 0.0649, 483 F2 values for SmRu4Sn6, and a = 685.2(1), c = 977.6(3) pm, wR2 = 0.0629, 554 F2 values for GdRu4Sn6 with 19 variables for each refinement. The striking structural motif of these stannides are distorted RuSnö octahedra with Ru-Sn distances ranging from 257 to 278 pm. Four of such octahedra are condensed via common edges and faces forming [Ru4Snö] units which are packed in a tetragonal body-centered arrangement. The rare-earth atoms fill the voids between the [Ru4Sn6] units. Based on an extended Hückel calculation, strong bonding interactions were found for the Ru-Sn and the various Sn-Sn contacts. 
  Reference    Z. Naturforsch. 54b, 863—869 (1999); received March 29 1999 
  Published    1999 
  Keywords    Stannides, Crystal Structure, Chemical Bonding 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0863.pdf 
 Identifier    ZNB-1999-54b-0863 
 Volume    54 
26Author    Rolf Minkwitz, Michael Berkei, Sonderdruckanforderungen An, ProfR. Dr, MinkwitzRequires cookie*
 Title    Neuuntersuchung der Kristallstruktur von a-ICl Novel Investigation on the Crystal Structure of a-ICl  
 Abstract    The redetermination of the crystal structure of a-iodine monochloride, a-ICl, is described. It cry­ stallises monoclinically in the space group P2j/c with a = 1216.2(1), b = 428.6(1), c = 1188.9(1) pm, ß= 117.50(1)° and eight formula units per unit cell. 
  Reference    Z. Naturforsch. 54b, 1615—1617 (1999); eingegangen am 10. September 1999 
  Published    1999 
  Keywords    Iodine Monochloride, Redetermination, Crystal Structure 
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 Identifier    ZNB-1999-54b-1615_n 
 Volume    54 
27Author    H. Jacobs, E.Von OstenRequires cookie*
 Title    The Crystal Structure of a New Modification of Potassium Amide, KNH2  
 Abstract    In the temperature range from 54 to 75 °C a new modification of KNH2 was found, which crystallizes tetragonally a — 4.282 ±0.003 A, c = 6.182 ±0.003 A, and c/o= 1.444 (60 °C), in P 4/nmm -No. 129-, Z = 2, 2 K in 2c 0 1/2 z, z = 0.202(5), 2 N in 2c 0 1/2 z, z = 0.737(15). Its structure is of a deformed sodium chloride type. 
  Reference    (Z. Naturforsch. 31b, 385—386 [1976]; eingegangen am 24. November 1975) 
  Published    1976 
  Keywords    Potassium-Compound, Crystal Structures, Amides 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-0385_n.pdf 
 Identifier    ZNB-1976-31b-0385_n 
 Volume    31 
28Author    Klaus Deller, Brigitte EisenmannRequires cookie*
 Title    The Crystal Structure of SrAs3  
 Abstract    The new intermetallic compound S1A.S3 crystallizes monoclinic, space group C2/m [a = 9.61(1) A, b = 7.63(1) A, c = 5.88(1) A, ß — 112.9(1)°). The anionic part of the struc-ture contains puckered layers of two-and threebonded As-atoms. 
  Reference    (Z. Naturforsch. 31b, 1550—1551 [1976]; eingegangen am 6. September 1976) 
  Published    1976 
  Keywords    Intermetallic Compounds, Arsenide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1550_n.pdf 
 Identifier    ZNB-1976-31b-1550_n 
 Volume    31 
29Author    EdwardW. Abel, StuartA. Mucklejohn, T.Stanley Cameron, RuthE. CordesRequires cookie*
 Title    The Dimeric Phosphinimine Complex [CdI2(HN: PPh3)2]2 Containing N-H --I Hydrogen Bonds  
  Reference    Z. Naturforsch. 33b, 339—340 (1978); received December 5 1977 
  Published    1978 
  Keywords    X-ray, Crystal Structure, Phosphinimine 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0339_n.pdf 
 Identifier    ZNB-1978-33b-0339_n 
 Volume    33 
30Author    Hans-Georg Von Schnering, Wolfgang MayRequires cookie*
 Title    Die Struktur des 2  
 Abstract    One of the diastereomeres of 2,3,4,6,7,8-hexamethyl-2,3,4,6,7,8-hexaphosphabicyclo-[3,3,0]octane (PMe)öC2H2 crystallizes in the space group P2i/n with four molecules per unit cell. Two independent molecules are nearly identical in shape but differ by inter-molecular packing. The five-membered rings have a skew chair conformation with all exocyclic methyl groups in axial positions leading to a staggered all-trans conformation of the bicyclic system. The mean bond lengths are P-P = 220.9 pm, P-C = 185.9 pm and C-C = 151.9 pm. 
  Reference    Z. Naturforsch. 33b, 698—698 (1978); eingegangen am 24. April 1978 
  Published    1978 
  Keywords    Carbaphosphane, Molecular Structure, Crystal Structure 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0698.pdf 
 Identifier    ZNB-1978-33b-0698 
 Volume    33 
31Author    Alain Schiff-Frangois, Gerhard Savelsberg, Herbert SchäferRequires cookie*
 Title    Darstellung und Struktur von  
 Abstract    Three sulfurapatites have been prepared. They crystallize in the hexagonal system (P63/m) with the following lattice constants: BaS(As04)2S04: a= 1052.6(5) pm, c= 773.7(4) pm, c/a = 0,735; SrS(As04)2S04: a = 1016.1(8) pm, c= 741(1) pm, c/a = 0.729; SrS(P04)2S04: a = 980.3(8) pm, c= 727(1) pm, c/a = 0.742. 
  Reference    Z. Naturforsch. 34b, 764—765 (1979); eingegangen am 16. Februar 1979 
  Published    1979 
  Keywords    Sulfur Apatite, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0764_n.pdf 
 Identifier    ZNB-1979-34b-0764_n 
 Volume    34 
32Author    M. Schweizer, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis einer neuen ternären Phase Cu0)5Nbli5O3>7  
 Abstract    Single crystals of Cuo,5Nbi,503.7 were prepared and investigated by X-ray methods (a = 376.7, b = 507.3, c = 374,9 pm; ß = 101.5°; space group: P2i-Cg). The statistically occupied metal positions (Nb/Cu) have a trigonal prismatic O 2-surrounding. 
  Reference    Z. Naturforsch. 34b, 774—776 (1979); eingegangen am 7. März 1979 
  Published    1979 
  Keywords    Niobium, Oxygen, Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0774.pdf 
 Identifier    ZNB-1979-34b-0774 
 Volume    34 
33Author    J. Schmachtel, Hk, Müller-BuschbaumRequires cookie*
 Title    Oxotitanate mit gemischter Valenz, II Zur Kenntnis von Sr2Ti6013 Oxotitanates with Mixed Valence, II About Sr2Ti60i3  
 Abstract    Single crystals of Sr2TieOi3 were prepared by heating a mixture of SrO • Ti203 • 2 TiOo in a vacuum furnace to 1800 °C for 6 hours. X-ray investigations show monoclinic sym-metry (a = 1525,0, b = 376,9, c = 916,4 pm; ß = 99,15°, space group Cgh-C2/m). Sr2Ti60i3 is isotypic with Ba2Ti60i3. 
  Reference    (Z. Naturforsch. 35b, 4—6 [1980]; eingegangen am 9. Oktober 1979) 
  Published    1980 
  Keywords    Strontium, Titanium, Oxygen, Crystal Structure 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0004.pdf 
 Identifier    ZNB-1980-35b-0004 
 Volume    35 
34Author    Klaus Volk, Gerhard Cordier, Ralph Cook, Herbert SchäferRequires cookie*
 Title    BaSbTe3 und BaBiSe3 Verbindungen mit BiSe-bzw. SbTe-Schichtverbänden BaSbTe3 and BaBiSe3 Compounds with BiSe-or SbTe-Layer Structures, Respectively  
 Abstract    The new compounds BaBiSe3 and BaSbTe3 crystallize in the orthorhombic system, space group P2i2i2i with BaBiSe3: a = 1724 ± 2 pm, b = 1600 ± 2 pm, c = 437.0 ± 0.5 pm; BaSbTe3: a = 1809 ± 2 pm, b = 1694 ± 2 pm, c = 463.5 ± 0.4 pm. BiSeö-or SbTe6-octahedra, resp., are connected by common edges to fourfold strings. These are bound by additional chalcogen atoms to sheets, between which the Ba ions are located. 
  Reference    Z. Naturforsch. 35b, 136—140 (1980); eingegangen am 16. Oktober 1979 
  Published    1980 
  Keywords    Bariumbismutselenide, Bariumantimonytelluride, Crystal Structure 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0136.pdf 
 Identifier    ZNB-1980-35b-0136 
 Volume    35 
35Author    U. Lehmann, Hk Müller-BuschbaumRequires cookie*
 Title    The Structure of Nd2Ni04 and its Relationship to La2Ni04 and La2CuC>4  
 Abstract    Single crystals of Nd2Ni04 were prepared by plasma and C02-LASER technique and analysed by X-ray single crystal methods. Nd2Ni04 is the first compound of the orthorhombically dis-torted La2Cu04-type. 
  Reference    Z. Naturforsch. 35b, 389—390 (1980); eingegangen am 19. Dezember 1979 
  Published    1980 
  Keywords    Neodymium, Nickel, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0389_n.pdf 
 Identifier    ZNB-1980-35b-0389_n 
 Volume    35 
36Author    A.-R Schulze, U. Hk, Müller-BuschbaumRequires cookie*
 Title    Oxogallates of Alkaline Earth Metals, IX The Structure of ß-SrGa204  
 Abstract    /?-SrGa204 was prepared and investigated by X-ray single crystal methods. It crystallizes with monoclinic symmetry: C2j>-P2i/c, a — 839.2; b = 901.8; c = 1069.7 pm; ß = 93.9°, Z — 8. The orientation of the tetrahedra is discussed in comparison with other well-known members of the stuffed tridymite structure. 
  Reference    Z. Naturforsch. 36b, 892—893 (1981); eingegangen am 27. März 1981 
  Published    1981 
  Keywords    Crystal Structure, Strontium, Gallium, Oxide 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-0892_n.pdf 
 Identifier    ZNB-1981-36b-0892_n 
 Volume    36 
37Author    Birgit Lehnis, Joachim SträhleRequires cookie*
 Title    Synthese und Kristallstruktur von C83(AuBr 4 ) 2 Br3 Synthesis and Crystal Structure of Cs3(AuBr4) 2 Br 3  
 Abstract    Cs3(AuBr4)2Br3 is obtained in the form of red needles by adding the stoichiometric amount of CsBr to a solution of HAuBr4 and Br3~ in aqueous HBr. The salt decomposes slowly at room temperature to form a mixed-valent, cubic bromo aurate(I,III), in which the linear AuBr 2 ~ ions are partially substituted by Br3~ ions. At 140 °C Cs 2 Au 2 Bre and CsBr are formed. Cs3(AuBr4) 2 Br3 crystallizes monoclinic with four formula units in the space group P2i/c. The structure is built up by AuBr 4 ~ and Br3~ anions and Cs+ cations. An average Au-Br distance of 242.2 pm was found for the square planar AuBr 4 ~ ion. The linear Br3~ groups are almost symmetrical with Br-Br distances of 254.0 and 256.2 pm. Therefore only two vibrations are observed in the IR spectrum: Vas = 172, <5 = 56 cm -1 . The absorptions of the AuBr 4 _ groups are: vas = 250, <5as= 113, y — 102 cm -1 . 
  Reference    Z. Naturforsch. 36b, 1504—1508 (1981); eingegangen am 8. September 1981 
  Published    1981 
  Keywords    Synthesis, IR Spectra, Crystal Structure 
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 Identifier    ZNB-1981-36b-1504 
 Volume    36 
38Author    K. B. Plötz, Hk Müller-BuschbaumRequires cookie*
 Title    Oxoplumbate(II), IV Einbau von Sr 2+ in Pb9Al8021 Solid State Chemistry of Oxoplumbates(II), IV Incorporation of Sr 2+ in Pb9Al802i  
  Reference    (Z. Naturforsch. 37b, 108—109 [1982]; eingegangen am 29. September 1981) 
  Published    1982 
  Keywords    Crystal Structure, Lead, Aluminium, Strontium 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0108_n.pdf 
 Identifier    ZNB-1982-37b-0108_n 
 Volume    37 
39Author    Karl-Friedrich Tebbe, Roland FröhlichRequires cookie*
 Title    Beiträge zur Strukturchemie phosphorhaltiger Ketten und Ringe, V [1]  
 Abstract    Die Molekül-und Kristallstruktur des 1.2.3.4-Tetra-ferf-butyl-1.4-bis(trimethylsilyl)tetraphosphans, Me3Si-(«-BuP)4-SiMe3 Structural Chemistry of Phosphorus-Containing Chains and Rings, V [1] Molecular and Crystal Structure of 1,2,3,4-Tetra-ferf-butyl-1,4-bis(trimethylsilyl)tetraphosphane, (H3C)3Si-(f-BuP)4-Si(CH3)3 The compound l,2,3,4-tetra-£er£-butyl-l,4-bis(trimethylsilyl)tetraphosphane, Me3Si-(£-BuP)4-SiMe3, C22H54P4Si2, crystallizes monoclinically in the space group P2i/n (No. 14) with a = 889.9 pm, b = 2292.8 pm, c = 1568.0 pm, ß = 94.14° and Z = 4 formula units. The molecule forms a twisted Si-P4-Si-chain with two kinds of P-P-bonds. The atoms neighbouring the silicium atoms take part in bonds of length d(P-P) = 218.8 pm, whereas the central bond d(P-P) = 221.4 pm is much longer. A special feature of the structure is a short contact d(P-P) = 345.6 pm. Therefore, the inner region of the molecule has the shape of a nearly planar trapezium of the four phosphorus atoms. The periphery of the molecule is as expected. The average bond lengths are d(P-Si) = 228.5 pm, H(P-C) — 190.2 pm, d(Si-C) = 186.6 pm, d(C-C) = 151.8 pm and d(C-H) = 94 pm. 
  Reference    Z. Naturforsch. 37b, 534—541 (1982); eingegangen am 23. Dezember 1981 
  Published    1982 
  Keywords    Tetraphosphane, Phosphorus Chain, Crystal Structure 
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 Identifier    ZNB-1982-37b-0534 
 Volume    37 
40Author    M. Pušelj, Z. Ban, A. DrašnerRequires cookie*
 Title    On the Crystal Structure of HgZn3  
 Abstract    The crystal structure of the intermetallic phase HgZn3 was determined using X-ray single crystal and powder diffraction methods. The phase belongs to the orthorhombic system, most probable space group being Cmc2i, and appears to be isostructural with /S'-Cu3Ti. Under standard preparative conditions a statistical distribution of both atomic species was observed. 
  Reference    Z. Naturforsch. 37b, 557—559 (1982); received December 14 1981 
  Published    1982 
  Keywords    Crystal Structure, Zinc, Mercury, Amalgam 
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 Identifier    ZNB-1982-37b-0557 
 Volume    37 
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