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161Author    Na, Cufef, S. Kummer, W. Massa, D. BabelRequires cookie*
 Title    Zur Struktur der Kupfer-Weberite Na 2 CuCrF 7 Concerning the Structures of the Copper Weberites Na 2 CuCrF 7 and Na 2 CuFeF 7  
 Abstract    The crystal structure of the compound Na 2 CuCrF 7 (orthorhombic, a = 710.0, b = 1033.8, c = 751.8 pm, Z = 4) was refined in space group Pmnb to R (= 0.028 (1545 independent reflections). The Jahn-Teller distortion of the CuF 6 -octahedra (Cu-F = 191.1/193.8/212.4 pm. mean 199.1 pm) reduces the symmetry compared to the body-centered orthorhombic weberite type, to which it is otherwise closely related. The CrF 6 -octahedra. interconnecting parallel chains of CuF 6 -octahedra, are nearly undistorted (mean Cr-F = 190.6 pm). Na 2 CuFeF 7 exhibits a supercell with a different structure (monoclinic, a = 2468.7, b = 734.7, c = 1245.2 pm, ß = 99.29°, Z = 16). It may be interpreted as a new intermediate type between orthorhombic and trigonal weberites. Preliminary results obtained from refinement in space group A2/n (/? g = 0.076) are given and discussed (mean values Cu—F = 199 pm, Fe — F = 192 pm). 
  Reference    Z. Naturforsch. 43b, 694—701 (1988); eingegangen am 9. Februar 1988 
  Published    1988 
  Keywords    Crystal Structure, Weberite, Copper Fluoro Compounds 
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 Identifier    ZNB-1988-43b-0694 
 Volume    43 
162Author    Ute Patt-Siebel, Helmut Thullen, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    Dichlorcyclopropenon als stabiler Komplexligand Die Kristallstruktur von [NbOCl 3 -OC 3 Cl 2 ] 4 Dichlorocyclopropenone as Stable Complex Ligand The Crystal Structure of [NbOCI 3 * OC 3 Cl 2 ] 4  
 Abstract    The reaction of tetrachlorocyclopropene with NbOCl, yields NbCl 5 • OC 3 Cl 2 (1); 1 is also formed by partial hydrolysis of C 3 Cl 3 + NbCl 6 ~ (2), which is prepared from C 3 C1 4 and NbCl s . [NbOCl 3 • OC 3 Cl : ] 4 (3) was obtained by hydrolysis of 1 in form of pale-yellow, moisture sensitive, non-explosive crystals, and characterized by its IR spectrum and an X-ray crystal structure deter-mination (1871 independent observed reflexions, R = 0.048). Crystal data: space group P 1. Z = 2. a = 993.7(4), b = 1090.5(5). c = 1097.4(3) pm, a = 69.51(3), ß = 70.47(3), y = 66.51(4)° (at — 17 °C). 3 consists of centrosymmetrical tetramers; the four Nb atoms form a square and are linked via almost linear oxo groups with alternating short and long NbO bonds with mean bond lengths of 175 and 208 pm. In trans position of each of the short NbO bonds a dichlorocyclo-propenone molecule is attached via its oxygen atom with an NbO distance of 223 pm. 
  Reference    Z. Naturforsch. 43b, 795—800 (1988); eingegangen am 10. Februar 1988 
  Published    1988 
  Keywords    Dichlorocyclopropenone-NbOCb Adduct, Synthesis IR Spectra, Crystal Structure 
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 Identifier    ZNB-1988-43b-0795 
 Volume    43 
163Author    PeterG. Jones, Ralf Scheibach, Einhard Schwarzmann, Carsten Thöne, Andreas VielmäderRequires cookie*
 Title    Darstellung und Kristallstruktur einiger Tetracarboxylatoaurate(III) Preparation and Crystal Structure of Some Tetracarboxylatoaurates(III)  
 Abstract    Various salts M(AuX 4) 2 with X = OCOCH, or OCOC 2 H 5 have been prepared by two methods: (i) the reaction of metal hydroxides M(OH) 2 with HAuCl 4 , followed by treatment of the inter-mediate products with acetic or propionic acid, or (ii) the reaction of aurates M{Au(OH) 4 } 2 with the carboxylic acids. The crystal structure of Pb{Au(0C0CH 3) 4 } 2 -2H 2 0 shows that it is isostruc-tural to the strontium salt, consisting of molecular units Pb{Au(OCOCH 3) 4 } 2 with crystallo-graphic symmetry 2. The water of crystallization forms neither coordinate bonds to a metal nor hydrogen bonds. In the analogous zinc salt the water is coordinated to the zinc atom, and the structure is a layer polymer. The two compounds that crystallize in anhydrous form. Ba{Au(OCOCH 3) 4 } 2 and Pb{Au(OCOC 2 H s) 4 } 2 , have not yet yielded crystals suitable for X-ray analysis. 
  Reference    Z. Naturforsch. 43b, 807—812 (1988); eingegangen am 3. März 1988 
  Published    1988 
  Keywords    Gold, Carboxylate, Alkaline Earths, Crystal Structure 
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 Identifier    ZNB-1988-43b-0807 
 Volume    43 
164Author    Wolfgang Saak, Siegfried PohlRequires cookie*
 Title      
 Abstract    Fe 4 S 4 I 2 (SPPh 3) 2 (1) was prepared by the reaction of Fe(THF) 6 Fe 4 S 4 I 4 (THF = C 4 H 8 0). SPPh,. and sulfur in toluene and CH 2 C1 2 . 1 has a lower stability than Fe 4 S 4 I 4 2_ and decomposes in solvents like THF and CH,CN. The crystal structure of 1 was determined from single crystal X-ray diffraction data. The compound crystallizes in the triclinic space group PI with a = 1025.5(1). b = 1082.4(1), c = 2135.5(3) pm. a = 89.82(1).ß -77.37(1), y = 73.56(1)°. V = 2214.1x10" pm'and Z = 2. The [Fe 4 S 4 ] 2+ core of 1 exhibits a slight tetragonal distortion. The mean Fe —S and Fe —Fe distances were found to be 227.6 (225.8-228.7) pm and 273.3 (272.9-274.4) pm, respectively. The Fe-SPPh, distances (231.6 and 232.1 pm) are longer than the terminal Fe — S bonds in RS coordinated [Fe 4 S 4 ] clusters. The Fe —I bonds are found at 251.6 and 251.8 pm. respectively. 
  Reference    Z. Naturforsch. 43b, 813—817 (1988); eingegangen am 15. Februar 1988 
  Published    1988 
  Keywords    Neutral, Mixed Terminal Ligand Iron-Sulfur Cluster, Synthesis, Crystal Structure 
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 Identifier    ZNB-1988-43b-0813 
 Volume    43 
165Author    Roland Boese, Dieter Bläser, Wolfgang PetzRequires cookie*
 Title    [Fe(C0)  
 Abstract    4 C(0)NMe 2 ][C(NMe 2)3]; die erste Strukturbestimmung einer Organometallverbindung mit dem Carbeniumion [C(NMe 2) 3 ] + [Fe(C0) 4 C(0)NMe 2 ][C(NMe 2) 3 ]; the First Structure Determination on an Organometallic Compound with the Carbenium Ion [C(NMe 2) 3 ] + The crystal structure of the carbamoyl complex [(C0) 4 FeC(0)NMe 2 ][C(NMe 2) 3 ] (1) is de-scribed. It crystallizes in the triclinic space group PI (a = 7.876(3), b = 10.098(3), c = 12.067(5)Ä, a = 94.25(3), ß = 90.94(3), y = 97.30(3)°, Z = 2) and consists of independent ions. The cation has a planar CN 3 array with sp 2 hybridized C and N atoms. The carbamoyl group of the anion occupies an axial position in the trigonal bipyramidal environment of the iron atom. 
  Reference    Z. Naturforsch. 43b, 945—948 (1988); eingegangen am 26. Februar/14. April 1988 
  Published    1988 
  Keywords    Crystal Structure, Iron Complex, Carbamoyl Complex, Guanidinium Cation 
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 Identifier    ZNB-1988-43b-0945 
 Volume    43 
166Author    HerbertW. Roesky, Jürgen Schimkowiak, Mathias Noltemeyer, GeorgeM. SheldrickRequires cookie*
 Title    Über die Reaktion von Dicyan mit Cd(II)-Ionen Röntgenstrukturanalyse von [Cd{(CN)2} 2 S0 2 ][AsF 6 ] 2 The Reaction of Cyanogen with Cd(II) Ions X-Ray Structure Analysis of [Cd{(CN) 2 } 2 S0 2 ][AsF 6 ] 2  
 Abstract    Cd[AsF 6 ] 2 (1) reacts with cyanogen to yield [Cd{(CN) 2 } 2 S0 2 ][AsF 6 ] 2 (2). 2 crystallizes in the space group Pnma with cell constants a = 1475.2(3); b = 821.7(3); c = 1321.2(9) pm. The coordination sphere of cadmium consists of nine atoms (one oxygen, four fluorines and four nitrogens). Cyanogen forms polymeric links. 
  Reference    Z. Naturforsch. 43b, 949—951 (1988); eingegangen am 10. März 1988 
  Published    1988 
  Keywords    Crystal Structure, Metal Complexes, Liquid Sulfur Dioxide, Cyanogen 
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 Identifier    ZNB-1988-43b-0949 
 Volume    43 
167Author    Otto Mündt, Heinz Riffel, Gerd Becker, Arndt SimonRequires cookie*
 Title    Element—Element-Bindungen, IV [1] Molekül-und Kristallstruktur des Tetramethyldiphosphans und -diarsans Element—Element Bonds, IV [1] Molecular and Crystal Structure of Tetramethyldiphosphane and -diarsane  
 Abstract    The molecular and crystal structures of the isotypic compounds tetramethyldiphosphane 1 and -diarsane 2 have been determined by single crystal X-ray diffraction (monoclinic; C2/m; Z = 2; 1/2: -155/-144 °C\a = 540.6(2)/555.8(2); b = 1131.0(6)/l 136.7(6); c -602.5(2)/612.8(2) pm;/? = 97.31(3)/95.24(3)°;P-P 221.2(1)/As-As 242.9(1) pm). In accordance with the crystallographically imposed symmetry 2/m, the molecules adopt antiperiplanar conformation. Their crystal structures are closely related to those of the homologues tetramethyldistibane 3 [1] and -dibismuthane 4 [3]. As found for the latter compounds, the E —E units (E = P, As) are also aligned in linear chains, but the intermolecular E---E contacts (P-P 381/As---As 370 pm) do not allow any extended interaction between molecules, which otherwise would result in thermochromic effects. 
  Reference    Z. Naturforsch. 43b, 952—958 (1988); eingegangen am 29. Februar 1988 
  Published    1988 
  Keywords    Tetramethyldiphosphane, Tetramethyldiarsane, Conformation, Molecular Structure, Crystal Structure 
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 Identifier    ZNB-1988-43b-0952 
 Volume    43 
168Author    Harald Burger, Karl Hensen, Peter PickelRequires cookie*
 Title    Aluminiumbromid-Pyridiniumbromid-Verbindung: Kristallstruktur Kristallstrukturbestimmung von [Tris(pyridinium)bromid]bis(tetrabromoaluminat(III)) Crystal Structure Determination of [Tris(pyridinium)bromide]bis(tetrabromoaluminate(III))  
 Abstract    The compound [(PyH) 3 Br][AlBr 4 ] 2 is formed by melting stoichiometric amounts of AlBr/PyHBr in a ratio of 2:3. It crystallizes in the orthorhombic space group Pbca with lattice constants a = 1365.5(2), b = 1616.0(2), c = 2783.7(3) pm, Z = 8, D c = 2.21 g/cm 3 . The structure was solved from 2810 diffractometer measured intensities (Cu —K" radiation) and refined to /?".(F) = 0.071. The cation shows three pyridinium ions attached via N — H — Br hydrogen bonds to a central bromide ion. The N-Br distances are 321(1), 321(2) and 332(2) pm. 
  Reference    Z. Naturforsch. 43b, 963—965 (1988); eingegangen am 11. März 1988 
  Published    1988 
  Keywords    Aluminiumbromide, Pyridiniumbromide, Addition Compound, Crystal Structure 
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 Identifier    ZNB-1988-43b-0963 
 Volume    43 
169Author    Rüdiger Kniep, Heinz Jürgen Beister, Dieter WaldRequires cookie*
 Title    Polymorphie von Tellur(IV)-iodid Polymorphism of Tellurium(IV) Iodide  
 Abstract    Idiomorphous crystals of five different polymorphic modifications (a—e) of Tel 4 are simultane-ously grown from solutions of Tel 4 and concentrated HI in methanol by evaporating the solvent at room temperature. (5-TeI 4 is the only stable phase at normal conditions. Phase transformations of a-, ß-, y-and £-TeI 4 to the final stage (5-TeI 4 take place by heating and run through discrete intermediates. The observed graduations lead to a sequence y-, ß-, a-,_e-TeI 4 which indicates "increasing metastability". The crystal structures of a-TeI 4 (trigonal; P3ml; a = 4.228(2), c — 6.684(6) A, Z = 0.5; D v = 5.10 g/cm 3), /3-TeI 4 (orthorhombic; Pn2,m; a = 6.888(2), b = 14.539(3), c = 16.753(4) Ä, Z = 8; D r = 5.03 g/cm 3) and y-TeI 4 (monoclinic; P2,/c; a = 11.199(4), b = 13.599(4), c = 22.158(6) Ä,/3 = 98.10(3)°, Z = 16; D, = 5.05 g/cm 3) are related to the known crystal structure of d-TeI 4 . a-TeI 4 ("Teo.s^") is an isotype of the 2H-CdI : structure with random distribution of Te over the Cd-positions. The crystal structures of ß-, y-and d-TeI 4 contain discrete tetrameric molecules "(TeI 4) 2 (Tel3 + I _)2" which are generated by ordered distributions of Te over 1/4 of the octahedral holes of a 2H-(ß) and a 4H-sequence (y, d) of the nearly close packed iodine layers. A nearly cubic close packing of Iodine atoms is observed in the crystal structure of £-TeI 4 (tetragonal; 14,/amd; a = 16.875(6), c -11.829(5) Ä, Z = 16; D v = 5.01 g/cm 3). The ordered distribution of Te in 1/4 of the octahedral holes leads to tetrameric molecules "(Tel 3 + I~) 4 " in a cubanelike arrangement which, thus far, has been observed only in the crystal structures of TeCl 4 and TeBr 4 . The Madelung Parts of Lattice Energies, MAPLE, of ß-, y-, d-and £-TeI 4 are calculated. 
  Reference    Z. Naturforsch. 43b, 966—980 (1988); eingegangen am 11. April 1988 
  Published    1988 
  Keywords    Polymorphism, Crystal Structures, Binary Compounds, Tellurium(IV) Iodide 
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 Identifier    ZNB-1988-43b-0966 
 Volume    43 
170Author    Andre Du Bois, Walter AbrielRequires cookie*
 Title    Zur Stereochemie des freien Elektronenpaares in AX 6 E-Systemen, VIII* Statisch verzerrte Anionen in [H 3 N(CH2)3NH3]3(BiX 6 ) 2 (H 2 0) 2 mit X = Cl, Br On the Stereochemistry of the Lone-Pair Electrons in AX 6 E-Systems, VIII Statically Distorted Anion in [H 3 N(CH 2 )3NH 3 ]3(BiX 6 ) 2 (H 2 0) 2 with X = Cl, Br  
 Abstract    Using 293 K diffractometer intensity data, the crystal structures of fH 1 N(CH 2) 3 NH 3 ] 3 (BiX 6) 2 (H 2 0) 2 with X -Cl, Br have been determined by single crystal X-ray technique and refined to a final R w of 0.027 and 0.043, respectively. The structures are isotypic, space group P2,/c, Z = 2 with a = 14.415(1). b = 9.7401(7), c = 12.4609(9)Ä, ß = 105.997(8)°for X — Cl and a = 14.794(2), b = 10.127(2), c = 12.853(2)Ä, ß = 105.68(2)° for X -Br. Statically distorted BiX,, 3_ -octahedra confirm the symmetry rules for the stereochemistry of the lone pair electrons in AX ft E-systems. Basic structural data for all compounds containing BiX 6 3_ and SbX h 3 
  Reference    Z. Naturforsch. 43b, 1003—1009 (1988); eingegangen am 22. Februar 1988 
  Published    1988 
  Keywords    Lone Pair Electrons, Bismutates, Crystal Structure 
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 Identifier    ZNB-1988-43b-1003 
 Volume    43 
171Author    Wolfgang Blase, Gerhard CordierRequires cookie*
 Title      
 Abstract    NaGaSn, (trigonal; P3,12 (No. 151); a = 632.8(4), c = 617.0(3) pm, Z -1; d v = 5.33 g/cm 3) was grown from the melt. The crystal structure contains Ga and Sn atoms in a helical arrangement (six atoms per turn) along the c-axis direction. Interatomic bonding between neighbouring helices completes a distorted [2+2]-tetrahedral environment for every Ga/Sn position. The compound is classified in terms of the Zintl concept. 
  Reference    Z. Naturforsch. 43b, 1017—1019 (1988); eingegangen am 28. März 1988 
  Published    1988 
  Keywords    Gallides, Stannides, Crystal Structure, Zintl-Phases 
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 Identifier    ZNB-1988-43b-1017 
 Volume    43 
172Author    M. Buckley, S. T. Bramwell, P. Day, W.T A HarrisonRequires cookie*
 Title     
 Abstract    The crystal structure of potassium nickel arsenate. KNiAs0 4 has been determined by high resolution powder neutron diffraction at 30 K. The unit cell of KNiAs0 4 is rhombohedral. space group R3, with hexagonal cell constants, a = 4.97208(2) (Ä). c = 28.52606(10) (Ä). The com-pound is isomorphous with NaNiAs0 4 . 
  Reference    Z. Naturforsch. 43b, 1053—1055 (1988); received February 23. 1988 
  Published    1988 
  Keywords    Powder Neutron Diffraction, Crystal Structure, Potassium Nickel Arsenate 
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 Identifier    ZNB-1988-43b-1053 
 Volume    43 
173Author    Fritjof Schmock, Aida El-Kholi, Ulrich Müller, Kurt DehnickeRequires cookie*
 Title    Synthesis and Crystal Structure of PPh 3 Me[HS0 4 ]  
 Abstract    PPh 3 Me[HS0 4 ] was prepared by the reaction of (PPh,Me)I with silver sulfate in aqueous solution. OPPh : Me and benzene being the by-products. The title compound was characterized by its IR spectrum as well as by an X-ray structure determination (1730 observed independent reflexions, R = 0.043). Crys-tal data: a = 910.4(3). b = 1587.8(4), c = 1294.2(6) pm, ß = 105.52(3)°. space group P2,/c t Z = 4. The structure consists of PPh,Me® cations and of HOSO, 0 ions that are associated via strong hydrogen bonds to dimeric centrosymmetric units. 
  Reference    Z. Naturforsch. 43b, 1069—1071 (1988); eingegangen am 13. April 1988 
  Published    1988 
  Keywords    Triphenylmethylphosphonium Hydrogensulfate, Synthesis, IR Spectra, Crystal Structure 
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 Identifier    ZNB-1988-43b-1069_n 
 Volume    43 
174Author    W. Meske, D. BabelRequires cookie*
 Title    Kristallstrukturen von Octacyanomolybdaten(IV), I Ag 4 (NH 3 ) 5 Mo(CN) 8 * 1,5 H 2 0 Crystal Structures of Octacyanomolybdates(IV), I Ag 4 (NH 3 ) 5 Mo(CN) 8 -l,5H 2 0  
 Abstract    The crystal structure of the triclinic compound Ag4(NH 3) 5 Mo(CN) 8 -l,5H^O could be refined in space group PI (at T = 179 K: a = 974.6, b = 1477.6, c = 775.5 pm, a =102.5, ß = 94.6, y = 81.5°, Z = 2. Rg = 0.044 for 2744 independent reflections). The [Mo(CN) 8 ] 4 ~-groups form distorted square antiprisms with mean distances Mo—C = 215.7, C—N = 115.1 pm. They are connected to a puckered layer via four of their nitrogen ends which are tetrahedrally coordinated to silver (Ag—N = 226.7 pm). In between these layers and more or less tightly coordinated to their free cyano-N atoms dumbbells [CNAgNH 3 ] and [Ag(NH 3) 2 ] + are embedded. Their variation of distances and angles (Ag—N: 213 ... 216 pm, N —Ag-N: 150 ... 174°) is discussed. 
  Reference    Z. Naturforsch. 43b, 1167—1173 (1988); eingegangen am 20. April 1988 
  Published    1988 
  Keywords    Crystal Structure, Octacyanomolybdate, Silver-Nitrogen Coordination 
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 Identifier    ZNB-1988-43b-1167 
 Volume    43 
175Author    Gerhard Thiele, Dietmar PutzasRequires cookie*
 Title    Antiprismatische und dodekaedrische Oktaaquokationen von Calcium und Strontium in den Kristallstrukturen von Tetrahalogenocadmaten und -mercuraten Antiprismatic and Dodecahedral Oktaaquo Cations of Calcium and Strontium in the Crystal Structures of Tetrahalogeno Cadmates and Mercurates  
 Abstract    The tetrahalogenometallates CaHgBr 4 -8H 2 0, CaCdI 4 -8H 2 0 and SrCdI 4 -8H 2 0 which have been obtained by crystallization from aqueous solutions form different structures. The orthorhombic compounds CaHgBr 4 -8H^O (Cmca, a — 1720.1(6) pm, b = 1329.2(4) pm. c = 1369.5(7) pm, Z — 8, R -0.041) and SrCdI 4 -8H 2 0 (Pnma, a = 1404.6(2) pm, b = 1841.1(5) pm. c = 1420.6(3) pm, Z = 8, R = 0.037) are built up from dodecahedral [A(H 2 0) 8 ] cations (A = Ca, Sr) and tetrahedral MX 4 anions (M = Hg, Cd) which are cubic closed packed in a CuAu type structure. The tetragonal structure of CaCdI 4 -8H 2 0 (P4/nbm, a = 1268.14(13) pm, c = 536.96(35) pm. Z = 2, R = 0.034) contains antiprismatic [Ca(H 2 0) x ] 2+ cations and tetrahedral Cdl 4 anions, which form together a tetragonal primitive rod package. 
  Reference    Z. Naturforsch. 43b, 1224—1234 (1988); eingegangen am 9. Juni 1988 
  Published    1988 
  Keywords    Crystal Structure, Hydrates, Cadmium Complexes, Mercury Complexes 
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 Identifier    ZNB-1988-43b-1224 
 Volume    43 
176Author    Gerhard CordierRequires cookie*
 Title    Darstellung und Kristallstruktur von Ca 5 Ga 2 N 4 Preparation and Crystal Structure of Ca 5 Ga 2 N 4  
 Abstract    The crystal structure of Ca 5 Ga 2 N 4 (orthorhombic, space group Cmca, a = 487.3(2) pm, b = • 1110.5(3) pm, c = 1421.7(4) pm, Z = 4) contains infinite zig-zag chains of Ga atoms, which are in a tetrahedral coordination by two additional nitrogen atoms in terminal positions. 
  Reference    Z. Naturforsch. 43b, 1253—1255 (1988); eingegangen am 3. Juni/18. Juli 1988 
  Published    1988 
  Keywords    Crystal Structure, X-Ray, Alkaline Earth Gallium Nitrides 
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 Identifier    ZNB-1988-43b-1253 
 Volume    43 
177Author    MervatEl Essawi, H. Gosmann, D. Fenske, F. Schmock, K. DehnickeRequires cookie*
 Title    Synthesen und Kristallstrukturen von [PPh 3 Me]N0 2 und [PPh 3 Me]HC0 2 H 2 0 Syntheses and Crystal Structures of [PPh 3 Me]N0 2 and [PPh 3 Me]HC0 2 H 2 0  
 Abstract    Triphenylmethylphosphonium nitrite and formate have been prepared by the reaction of [PPh,Me]I with silver nitrite, and lead formate, respectively, in aqueous solutions. [PPh 3 Me]N0 2 (1) forms pale yellow crystals, and [PPh 3 Me]HC0 2 H 2 0 (2) forms white crystals. Both com-pounds are soluble in water, ethanol, and dichloromethane. In moist air 2 is hydrated to yield [PPh 3 Me]HC0 2 -2H 2 0 (3). The compounds were characterized by their IR spectra. 1 and 2 also by X-ray crystal structure determinations. [PPh 3 Me]NO-> (1): space group P2,/«, Z = 4, 2088 independent observed reflexions, R = 0.062. Lattice dimensions (20 °C): a = 914.7(3), b = 1887.5(9), c = 1080.0(4) pm, ß = 110.29(3)°. The compound consists of PPh,Me + ions and NO-," anions with bond lengths of 114.2(6) pm and a bond angle of 124.1(7)°. [PPh 3 Me]HCOi • H^O (2): space group P2,/n, Z = 4, 2973 independent observed reflexions, R = 0.069. Lattice dimensions (-20 °C): a = 931(2), b = 1558(3), c = 1281(2) pm, ß = 105.9(1)°. The compound consists of PPh 3 Me + ions and formate anions which form centrosymmetric dimeric units [HCOvftO]?" through hydrogen bridges of the water molecules. Bond lengths CO 122.4(4) and" 120.9(4) pm. bond angle OCO 129.9(4)°. 
  Reference    Z. Naturforsch. 43b, 1279—1284 (1988); eingegangen am 27. Mai 1988 
  Published    1988 
  Keywords    Triphenylmethylphosphonium Nitrite and Formate, Synthesis, Crystal Structure 
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 Identifier    ZNB-1988-43b-1279 
 Volume    43 
178Author    WolfgangA. Herrmann, RolandA. Fischer, JosefK. Felixberger, RoccoA. Paciello, Pavlo Kiprof, Eberhardt HerdtweckRequires cookie*
 Title    Organorheniumhalogenide: Synthesen, Strukturen und Reaktivität gegenüber Alkinen Organorhenium Halogenides: Synthesis, Structure and Reactivity upon Treatment with Alkynes  
 Abstract    [dichloro(/<-chloro)(^-pentamethylcyclopentadienyI)rhenium(IV)] 
  Reference    Z. Naturforsch. 43b, 1391—1404 (1988); eingegangen am 29. April 1988 
  Published    1988 
  Keywords    Organorhenium Halides, Synthesis, Crystal Structure, Reactivity Bis 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1391.pdf 
 Identifier    ZNB-1988-43b-1391 
 Volume    43 
179Author    H. Schmidbaur, R. Nowak, B. Huber, G. MüllerRequires cookie*
 Title    Synthese  
 Abstract    und Kristallstruktur von [(C 6 Et 6)(C 6 H 5 Me)GaGaCI 4 ] 1/2 (C 6 Et 6): Ein gemischter Bis(i/ 6 -aren)gallium(I)-Komplex Synthesis and Crystal Structure of [(C 6 Et 6)(C 6 H 5 Me)GaGaCl4] • 1/2 (C 6 Et 6): A Mixed Bis(^ 6 -arene)gallium(I) Complex Crystals obtained from solutions of hexaethylbenzene and anhydrous Ga[GaCl 4 ] in toluene on cooling have the stoichiometry [(C 6 Et 6)(C 6 H 5 Me)GaGaCl 4 ] • 1/2 C 6 Et 6 . a = 9.760(1), b = 21.447(2), c = 17.754(2) A. ß = 95.47(1)°; monoclinic. space group P2,/n. Z = 4. Each Ga(I) center is ?/ 6 -bonded to one molecule of hexaethylbenzene and to one molecule of toluene. The two rings form an angle of 38,8°. The remaining crystal hexaethylbenzene is situated between two complex units, which are related by an inversion center located in the center of the ring. 
  Reference    Z. Naturforsch. 43b, 1447—1452 (1988); eingegangen am 27. Juli 1988 
  Published    1988 
  Keywords    Gallium(I) Arene Complex, Hexaethylbenzene, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1447.pdf 
 Identifier    ZNB-1988-43b-1447 
 Volume    43 
180Author    Michael Wedler, W. Herbert, FrankT. Roesky, Edelmann, Ulrich BehrensRequires cookie*
 Title    (T-Ferrocenyl-Komplexe der frühen Übergangsmetalle — Synthese und Struktur a-Ferrocenyl Complexes of the Early Transition Metals — Synthesis and Structure  
 Abstract    Ferrocenyllithium, FcLi (1), reacts with (C 5 H 4 CH 3) 2 TiCl2, CpTiCl, and Cp*TiCl 3 to give the new (7-ferrocenyl complexes (C5H 4 CH 3) 2 TiFc 2 (2), CpTiFc, (3) and Cp*Ti(Fc) 2 Cl (4), respectively. Treatment of Cp*ZrCl 2 with FcLi yields the mono-substitution product Cp*Zr(Fc)Cl (5), which has been characterized by an X-ray structure analysis. Compound 5 crystallizes in the monoclinic space group P2,/c (a = 1622.3(6), b = 995.0(2), c = 1664.3(6) pm; ß = 94.78(3)°; Z = 4). Due to the sterically demanding pentamethylcyclopentadienyl ligands 5 contains a long zirconium-carbon bond (231.4(8) pm) and the Cp rings of the ferrocenyl substituent are tilted by 10.2°. The syntheses of CpZrFc., (6), Cp*HfFc 3 (7) and Cp : VFc 2 (8) are also described. 
  Reference    Z. Naturforsch. 43b, 1461—1467 (1988); eingegangen am 6. Mai 1988 
  Published    1988 
  Keywords    Ferrocene, Early Transition Metals, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1461.pdf 
 Identifier    ZNB-1988-43b-1461 
 Volume    43 
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