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1986[X]
21Author    M. Veith, R. RosierRequires cookie*
 Title    Alkoxistannate, II [1] Tri(te/*-butoxi)alkalistannate(II): Darstellung und Strukturen Alkoxistannate, II [1] Tri(rerr-butoxi)alkalistannates(II): Synthesis and Structures  
 Abstract    Tri(terf-butoxi)alkalistannates (M (O rBu)3Sn, M = Li, Na, K, Rb, Cs) are obtained by reaction of alkali-fert-butanolates with tindi-terf-butoxide. If M equals Li or Na (1, 2) molecular com ­ 
  Reference    Z. Naturforsch. 41b, 1071 (1986); eingegangen am 12. F eb ru ar/17. März 1986 
  Published    1986 
  Keywords    Synthesis, Polycyclic C om pounds, Crystal Structure, M olecular Structure, X -R ay 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1071.pdf 
 Identifier    ZNB-1986-41b-1071 
 Volume    41 
22Author    Z. NaturforschRequires cookie*
 Title    Über Erdalkalimetallverbindungen des l,l-Dicyanoethylen-2,2-dithiolats, III+ Die Kristallstruktur von SrS2C4N2 * 5 H20  
 Abstract    By reaction of CS2 with m aleonitrile in presence of sodium ethanolate in ethanol, N a2S2C4N 2 is obtained. SrS2C4N2-5 H 20 was synthesized by reaction of Sr(NCS) 2 with N a2S2C4N2 in ethanol. It crystallizes monoclinically, space group P2!/c, with a = 9.201(2), b — 9.990(6), c = 14.605(5) Ä,/3 = 122.3(3)°, Z = 4. The com pound is isotypical with CaS2C4N2-5 H 20 . A structural model based on equivalent metal positions was refined to R -0.057. The crystal structure contains layers of nearly planar [S2C = C (C N)2]2' anions held together by interspersed Sr2+ cations in a tricapped trigonal prismatic surrounding of 6 0 and 3N atoms. The S atom s of the ligand are not included in the coordination sphere of Sr2+ but are involved in several O — H -S hydrogen bonds. 
  Reference    Z. Naturforsch. 41b, 1206—1210 (1986); eingegangen am 1. April/26. Juni 1986 
  Published    1986 
  Keywords    Strontium -l, l-dicyanoethylene-2, 2-dithiolate P entahydrate, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1206.pdf 
 Identifier    ZNB-1986-41b-1206 
 Volume    41 
23Author    Gerhard Thiele, Joachim Großmann, AlbertWolfgang PürzerRequires cookie*
 Title    Kubische Cyanomercurate NR4MHg(CN)4 (R = Et, Pr; M = Li, Na, K, Cu) mit Alumosilikatstruktur On Cubic Cyanomercurates NR4MHg(CN)4 (R = Et, Pr; M = Li, Na, K, Cu) with Alumosilicate Type Structure  
 Abstract    Quaternary Cyanomercurates N R 4"[M H g(C N)4]~ with R = Et, Pr; M = Li, Na, K, Cu, obtained by reactions of N R 4C N . MCN and H g(C N)2 in polar solvents, are dim orphous. The low temperature modifications are tetragonal with a space group 14, the high temperature forms are cubic with the space group F 43m . Reversible phase transitions were studied by DSC, Raman spectroscopy and X-ray diffraction. They are o f first order and of displacive character. The X-ray structure determ inations o f the cubic forms of N E t4M H g(C N)4 with M = Na, Li showed tetra­ hedral M (N C)4-and H g(C N)4-groups connected by linear M —N C —Hg bridges to give three-dimensional frameworks o f a cristobalite type structure and with cavaties, in which the N E t4+ cations are located. 
  Reference    Z. Naturforsch. 41b, 1346—1350 (1986); eingegangen am 16. Juli 1986 
  Published    1986 
  Keywords    Cyanom ercurates, Crystal Structure, Cristobalit Type Structure, Cyano Com plexes, Mercury Com pounds 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1346.pdf 
 Identifier    ZNB-1986-41b-1346 
 Volume    41 
24Author    W. Olfgang, S. G. Maass, AlfredW. HansonRequires cookie*
 Title    Wrightiin, a New Chlorinated Depside from Erioderma wrightii Tuck (Ascolichenes)  
 Abstract    The structure of wrightiin, a depside m etabolite of E rioderm a wrightii is shown by X-ray crystalo-graphy to be 2. The mass spectrum is anomalous. 
  Reference    Z. Naturforsch. 41b, 1589—1592 (1986); received January 8 1986 
  Published    1986 
  Keywords    Erioderm a wrightii, Lichen D epside, Methyl 3-Chloroevernate, Crystal Structure, Mass Spectra 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1589_n.pdf 
 Identifier    ZNB-1986-41b-1589_n 
 Volume    41 
25Author    CarlH. Abben, A. Nton Meller, M. Atthias, N. Oltem Eyer, GeorgeM. SheldrickRequires cookie*
 Title    Synthese, Molekül-und Kristallstruktur von 3,5-Dimethyl-2,6-bistrimethylsilyl- l-thia-2,4,6-triaza-3,5-diborinan-wolframpentacarbonyl Synthesis, M olecular and Crystal Structure of 3,5-Dimethyl-2,6-bistrimethylsilyl- l-thia-2,4,6-triaza-3,5-diborinane-tungstenpentacarbonyl  
 Abstract    The am m onolysis o f 3,5-dim ethyl-2,6-bistrim ethylsilyl-l,4-dithia-2,6-diaza-3,5-diborinane leads to 3,5-dim ethyl-2,6-bistrim ethylsilyl-l-thia-2,4,6-triaza-3,5-diborinane, which reacts with tungstenpentacarbonyl • TH F to give the title-com pound. 'H , " B , 13C, 14N , 29Si N M R spectra, IR and MS data, and the results o f an X-ray analysis are reported. 
  Reference    Z. Naturforsch. 41b, 799—802 (1986); eingegangen am 19. Februar 1986 
  Published    1986 
  Keywords    l-Thia-2, 4, 6-triaza-3, 5-diborinanes, Tungstenhexacarbonyl, Synthesis, M olecular Structure, Crystal Structure 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0799.pdf 
 Identifier    ZNB-1986-41b-0799 
 Volume    41 
26Author    Z. NaturforschRequires cookie*
 Title    [8+2]-CycIoadditionen mit Benzylidenmalonsäurederivaten: Steuerung der Stereochemie durch die Carbonsäurestrukturteile [1]  
 Abstract    [8+2]-C ycloadditions w ith B enzylidene M alonic A cid D erivatives: The R ole of Carboxylic G ro u p s in Stereoselectivity [1] G erh ard M aas Fachbereich Chemie der U niversität K aiserslautern, D-6750 K aiserslautern Professor R u dolf G om pper zu m 60. G eburtstag gew idm et The stereochemistry of the regiospecific [ 8 + 2]-cycloaddition of 8 -m ethoxyheptafulvene (2) 
  Reference    Z. Naturforsch. 41b, 1151 (1986); eingegangen am 17. F ebruar 1986 
  Published    1986 
  Keywords    Activated Olefins, Cross C onjugated 8 jr-System, H ydroazulenes, [ 8 + 2]-Cycloaddition, Stereochemistry, Crystal Structure, 'H NM R Spectra 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-1151.pdf 
 Identifier    ZNB-1986-41b-1151 
 Volume    41 
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