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1	Author	Mit Unterschiedlich, Koordinierten Zinkionen, Joachim Pickardt, Gill-Taik Gong, Sabine Wischnack, Christina Steinkopff	Requires cookie*
	Title	Kristallstruktur zweier Zinkthiocyanat-Hexamethylentetramin-Addukte, Zn(SCN)2» (Q H ^N,), und {Zn(SCN)2 C6HnN4 2H 20}(SCN)2-(C6H 12N4)2, and {Zn(SCN)2-C6H 12N4-2H 20}", with Differently Coordinated Zinc Ions
	Abstract	of the adducts Zn(SCN),-(C6H12N4)2 (1), and {Zn(SCN)2-C6H 12N4-2H20}" (2) were obtained by crystallization from aqueous solutions containing hexamethylenetetrami ne, potassium thiocyanate and zinc nitrate or zinc sulfate, resp., under identical conditions, as two totally different products. 1 crystallizes orthorhombically, space group P nmm, Z -2, a -622.4(5), b -1152.3(7), c = 1394.0(9) pm; 2 is monoclinic, space group C2/c, a = 984.4(3), b = 1217.0(5), c = 1257.4(6) pm, andß = 111.69(5)°. The crystal structure of 1 contains discrete molecules of the complex, in which the zinc ion is tetrahedrally coordinated by two NCS li gands, and two hexamethylenetetramine molecules, which act as monodentate ligands. In 2 however, the zinc ions are octahedrally coordinated. A "supramolecular" structure is form ed: The hexamethylenetetramine molecules act as bridging bidentate ligands and connect [Zn(H20) 2(NCS)2] units forming zig-zag chains. Adjacent chains are interconnected via hydrogen bonds. The formation of the two compounds with different coordination may be due to the fact, that the educts Zn(N03)2-4H20 and ZnS04-7H20 contain Zn(H20) 4 and Zn(H20) 6 moieties, resp., and that these species are retained in solution.
	Reference	Z. Naturforsch. 49b, 325—329 (1994); eingegangen am 24. August 1993
	Published	1994
	Keywords	Hexamethylenetetramine Complexes, Zinc Thiocyanate Adducts, Crystal Structure Crystals
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	TEI-XML for	default:Reihe_B/49/ZNB-1994-49b-0325.pdf
	Identifier	ZNB-1994-49b-0325
	Volume	49

2	Author	Srb^sioogThomas Berger, Klaus-Jürgen Range	Requires cookie*
	Title	Hochdrucksynthese und Strukturverfeinerung von Strontium-Danburit, SrB2Si20 8 High-Pressure Synthesis and Structure Refinement of Strontium Danburite
	Abstract	of strontium danburite, SrB2Si20 8, were found after high-pressure treatment of SrSi03/Si02/Al20 3 mixtures at 40 kbar and 1400°C, obviously formed by an unwanted side reaction with the boron oxide-containing boron nitride capsules used. The crystals are orthorhombic, space group Pnma, with a = 8.1891 (5), b = 7.9311 (6), c = 8.9284(5) A and Z = 4. The structure was refined to R = 0.031, Rw = 0.028 for 590 independent, absorption-corrected reflections. SrB2Si20 8 is isostructural with danburite (CaB2Si20 8). The structure comprises a tetrahedral framework of ordered B20 7 and Si2Ov groups which contains Sr in irregular coordination. Die Kristallstruktur des seit 1839 bekannten Dan-burits, CaB2Si20 8, wurde 1931 von Dunbar und Machatschki [1] bestimmt und später von Johann-son [2], Bakakin, Kravchenko und Belov [3] sowie von Phillips, Gibbs und Ribbe [4] verfeinert. Ob wohl Dunbar und Machatschki die Positionen der Boratome nur ungenau festlegen konnten, haben sie das Grundprinzip der Danburitstruktur korrekt be schrieben; es liegt ein dreidimensionales Netzwerk aus geordnet verteilten, eckenverknüpften B20 7-und Si20 7-Gruppen vor, das die Ca-Atome in irre gulärer Koordination durch Sauerstoff enthält. Eine 1'B-NMR-Studie von Brun und Ghose [5] belegt, daß die geordnete B-Si-Verteilung in Danburit bis zu dessen Zersetzungstemperatur erhalten bleibt. Während also CaB2Si2Ö 8 strukturell gut charak terisiert ist, lagen von der homologen Verbindung SrB2Si20 8 bisher nur Pulverdaten vor. SrB->Sio08 wurde erstmals von Verstegen et al. erwähnt, die die Lumineszenz der Eu-aktivierten Verbindung un tersuchten [6]. Auf sie geht auch die Bestimmung der Zellparameter zurück. Aufgrund der vermute ten Ähnlichkeit zum Danburit schlugen Verstegen et al. [6] für SrB2Si2Og den Namen Strontium-Dan-burit vor. Eine weitere Erwähnung der Verbindung SrB2Si20 8 erfolgt bei Baylor und Brown [7], die Phasengleichgewichte im ternären System SiCX-B20 3-Sr0 untersuchten. * Sonderdruckanforderungen an Prof. Dr. K.-J. Range.
	Reference	Z. Naturforsch. 51b, 172—174 (1996); eingegangen am 20. Juli 1995
	Published	1996
	Keywords	Stontium Danburite, High-Pressure Synthesis, Crystal Structure Single crystals
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	TEI-XML for	default:Reihe_B/51/ZNB-1996-51b-0172.pdf
	Identifier	ZNB-1996-51b-0172
	Volume	51

3	Author	H. Jacobs, E.Von Osten	Requires 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

4	Author	Klaus Deller, Brigitte Eisenmann	Requires 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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	Identifier	ZNB-1976-31b-1550_n
	Volume	31

5	Author	EdwardW. Abel, StuartA. Mucklejohn, T.Stanley Cameron, RuthE. Cordes	Requires 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

6	Author	Hans-Georg Von Schnering, Wolfgang May	Requires 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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	Identifier	ZNB-1978-33b-0698
	Volume	33

7	Author	Alain Schiff-Frangois, Gerhard Savelsberg, Herbert Schäfer	Requires 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

8	Author	M. Schweizer, Hk Müller-Buschbaum	Requires 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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	Identifier	ZNB-1979-34b-0774
	Volume	34

9	Author	J. Schmachtel, Hk, Müller-Buschbaum	Requires 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

10	Author	Klaus Volk, Gerhard Cordier, Ralph Cook, Herbert Schäfer	Requires 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

11	Author	U. Lehmann, Hk Müller-Buschbaum	Requires 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

12	Author	A.-R Schulze, U. Hk, Müller-Buschbaum	Requires 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

13	Author	Birgit Lehnis, Joachim Strähle	Requires 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

14	Author	K. B. Plötz, Hk Müller-Buschbaum	Requires 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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	Identifier	ZNB-1982-37b-0108_n
	Volume	37

15	Author	Karl-Friedrich Tebbe, Roland Fröhlich	Requires 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

16	Author	M. Pušelj, Z. Ban, A. Drašner	Requires 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

17	Author	Annegret Lipka, Dietrich Mootz	Requires cookie*
	Title	von Antimontribromid mit Biphenyl, 2 SbBr3 * C12H10 The Crystal Structure of the 2 : 1 Adduct of Antimony Tribromide with Biphenyl, 2SbBr3-Ci2Hio
	Abstract	The crystal structure of 2 SbBr3 • biphenyl consists of pyramidally shaped SbBr3 molecules and planar biphenyl molecules which form a centrosymmetric complex through bonding of the Sb atoms to the phenyl rings. The distance of the Sb atoms to the phenyl ring planes is 323 pm. Taking into account intramolecular bonds Sb-Br at an average of 250.9 pm, an intermolecular Sb---Br contact at 369.5 pm and the .-r-donor-acceptor inter-action the Sb coordination is distorted -octahedral. The structure is discussed with regard to related compounds.
	Reference	Z. Naturforsch. 37b, 695—698 (1982)
	Published	1982
	Keywords	Crystal Structure, Antimony Trihalides, Biphenyl
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	Identifier	ZNB-1982-37b-0695
	Volume	37

18	Author	Helmut Endres, Nasser Kadkhodai-Elyaderani	Requires cookie*
	Title	Malonenamidoxim, Nickelkomplexe und deren ßeaktionsprodukte mit Sauerstoff und Kohlendioxid: Vergleichende Strukturuntersuchungen Malonenamide Oxime, Nickel Complexes, and their Reaction Products with Oxygen and Carbon Dioxide: Comparative Structural Studies
	Abstract	Malonenamide oxime [HONC(NH2)CH2C(NH2)NOH = C3H8N402] (1), its bis-chelate complex with Ni(II) [Ni(C3HyN402)2] (2) and an ethanol solvate of this complex [Ni(C3H7N402)2 • 0.6 C2H5OH] (3) are characterized by X-ray structure analysis, as well as a paramagnetic tris-complex [Ni(C3H7N402)2(C3HsN402)] (4), which forms a catena structure in the crystal. The molecular structures of two reaction products of 2 with air are described: [Ni(C3H5N403)2(H20)2] • 4 H20 (5) has formed by oxidation of the methylene groups and may be taken as a complex of mesoxalamide oxime; [NiCsHieNsOs] • 6 H20 (6) has a macrocyclic ligand which is a derivative of orthocarbonic acid, formed by addition of carbon dioxide to the oxime groups.
	Reference	Z. Naturforsch. 37b, 1255—1265 (1982); eingegangen am 25. Mai 1982
	Published	1982
	Keywords	a, y-Diondioxime Complexes, Crystal Structure
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	Identifier	ZNB-1982-37b-1255
	Volume	37

19	Author	Peter Pullmann, Karl Hensen, JanW. Bats	Requires cookie*
	Title	Röntgenstrukturbestimmung von A1C13-Pyridin-Addukten: Der strukturelle Aufbau im fra7is-Dichlorotetrakis(pyridin)aluminium(III)- Tetrachloroaluminat(III) und im Trichlorotris(pyridin)aluminium(III) X-ray Diffraction Study of AICI3-Pyridine Adducts: The Crystal Structure of 7ra/?s-Dichlorotetrakis(pyridine)aluminium(III)tetrachloroaluminat(III) and of Trichlorotris(pyridine)aluminium(III)
	Abstract	Crystals of [A1(C5H5N)4C12][A1C14] are orthorhombic, Pna2lf Z = 4, a = 18.522(7), b = 15.141(5), c = 9.593(3) A, V = 2690(2) A 3 , Dc = 1.440 g/cm 3 . The structure has been solved from 5968 diffractometer measured intensities and refined by full-matrix least squares to RW(F) = 0.032. The crystal structure shows the complex to be £ra»s-dichloro-tetrakis(pyridine)aluminium(III) tetrachloroaluminat(III). The mean trans Al-Cl-and trans Al-N-distances in the octahedron are 2.279(3) and 2.070(4) A, respectively. Crystals of Al(C5H5N)3Cl3 are monoclinic, P2i/c, Z = 4, a = 7.261(2), b = 29.961(4), c = 8.624(1) A, ß = 98.12(2)°, V -1857(1) A 3 , D0 = 1.326 g/cm 3 . The structure has been solved from 4707 diffractometer measured intensities and refined to RW(F) = 0.028. The crystal structure shows octahedral complexes AICI3 • 3 (C5H5N) with trans geometry. The Al-N-distance trans to chlorine (2.096(2) A) is significantly longer than the two other Al-N-distances (mean 2.072(2) A).
	Reference	Z. Naturforsch. 37b, 1312—1315 (1982); eingegangen am 5. Mai 1982
	Published	1982
	Keywords	Aluminium Chloride, Pyridine, Crystal Structure
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	Identifier	ZNB-1982-37b-1312
	Volume	37

20	Author	Bernt Krebs, Andreas Schäffer, Marita Hucke	Requires cookie*
	Title	Oxotrihalogenoselenate(IV)
	Abstract	Darstellung, Struktur und Eigenschaften von P(C6H5)4SeOCl3, P(C6H5)4SeOBr3 und As(C6H5)4SeOBr3 Oxotrihalogenoselenates(IV): Preparation, Structure and Properties of P(C6H5)4SeOCl3, P(C6H5)4SeOBr3 and As(C6H5)4SeOBr3 The novel oxotribromosolenate(IV) SeOBr3~ anion was prepared from the reaction of stoichiometric quantities of SeOBi'2 and bromide in acetonitrile solution, and it was isolated as the tetraphenylphosphonium and -arsonium salts in crystalline form. For the synthesis of the analogous SeOCl3 _ as P(C'6H5)4SeOCl3, SeCl4 was reacted in the presence of a small quantity of H«() with P(CeH5)4Cl in acetonitrile. Complete N-ray structural analyses of P(C6H5)4SeOCi3 (space group P I, a = 10.981(3), b = 11.059(3), c = 10.358(3) A, a = 73.77(2)°, ß = 83.33(2)°, -/ = 80.51(2)°, V -1187.9(6) A 3) and of P(C6H5)4SeOBr3 (space group P 2i/c, a = 11.719(4), b = 16.088(4), c = 13.124(4) A, ß = 94.72(3)°, V = 2466(1) A 3) show dimeric centrosymmetric Se202Cl6 2-and Se202Br6 2 -anions being present in the solid. In the anions two square-pyramidal (y-octahedral) SeOHal4 groups are connected through a common Hal-Hal edge. The axial oxygen ligands (Se-O: 1.597(4) and 1.584(6) A) cause a pronounced stereochemical iraws-activation of the inert pairs at the Se atoms. As(C6H5)4So()Br3 is isotypic with P(C6H5)4SeOCl3.
	Reference	Z. Naturforsch. 37b, 1410—1417 (1982); eingegangen am 13. Mai 1982
	Published	1982
	Keywords	Oxohalogenoselenate, Crystal Structure, Selenium
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	Identifier	ZNB-1982-37b-1410
	Volume	37

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