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'Molecular Structure' in keywords Facet   Publication Year 1984  [X]
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1Author    Ulf Thewalt, Konrad HollRequires cookie*
 Title    Spaltung von S4N4 zu S2N2 bei Raumtemperatur: Darstellung und Struktur von S2N2 * 2AlBr3 Cleavage of S4N4 to S2N2 at Room Tem perature: Preparation and Structure of S2N2 * 2A lB r3  
 Abstract    The compound S2N2 • 2A lBr3 has been prepared by reaction of S4N4 with AlBr3 in 1,2-di-bromoethane at room temperature. Its crystal and molecular structure have been determined by X-ray diffraction; R = 0.068. Crystal data: monoclinic, P 2Jn, a = 9.594(5), b = 9.975(4), c = 7.528(4) Ä , ß = 111.36(5)°. The S2N2 ring of the centrosymmetrical complex is bonded via its nitrogen atoms to two AlBr3 units thus completing coordination tetrahedra around the A1 atoms. Bond distances and angles within the S2N2 ring are d(S—N) = 1.629(13) and 1.651(13) Ä , < (S —N -S) = 95.8, and < (N —S—N) — 84.2°. Whereas the S—N bond lengths agree closely with those of free S2N2, the angle at N is enlarged by ca. 5° and the angle at S is decreased by ca. 5°. The sulfur atoms form two close S --B r contacts of length 3.149 (intramolecular) and 3.193 (inter-molecular) Ä , respectively. The intermolecular attractive nonbonded S - • -Br interactions tie the complexes together in a way that leads to infinite chains which run parallel to the crystallographic z axis. 
  Reference    Z. Naturforsch. 39b, 145 (1984); eingegangen am 23. August 1983 
  Published    1984 
  Keywords    Molecular Structure, Disulfurdinitride Ligand, Aluminium Tribromide Adduct, T etrasulfurtetranitride 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0145.pdf 
 Identifier    ZNB-1984-39b-0145 
 Volume    39