Synthesis and Structure of [Ph₄As][AuS₉], a Cyclic Nonasulfidoaurate(I)

Abstract

A puckered ten‐membered ring consisting of nine S atoms and one Au atom occurs in the anion [AuS9]⊖. The title compound, prepared from K[Au(SCN)2] and Ph4AsSx, forms yellow, air‐stable crystals. The structures of other polysulfidoaurates are not yet known.

Base hydrolysis of bis(ethylenediamine)cobalt(III) complexes containing chelated thioether and selenoether ligands. Observation of dramatic medium effects

“…The slower reactions of [(en)2Co(S(R)- chelate effect, ring opening being known to proceed much less rapidly than monodentate ligand loss. 22 Medium Effects. The major issue concerning the mechanism of alkaline hydrolysis of the complexes investigated in this work is the nature of the process or processes governing the curvature depicted in Figures 2 and 3.…”

Ternary and quaternary chalcogenides of Group IB elements

“…Marbach and StraÈ hle isolated cyclic nonasulfidoaurate(I) (Ph 4 As)[AuS 9 ]. 48 Its structure is shown in Fig. 8.…”

“…Tel. (38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56)(57) 245 73 52 in this system. In 1994, Chinese researchers 24 at the National Laboratory of Superconductivity synthesised a series of oxyselenides LnCuSeO (Ln = La, Sm, Gd or Y).…”

“…Svobody 4, 310077 Kharkov, Ukraine. Fax (38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56)(57) 247 18 16. Tel.…”

Notizen: Bridging of Trigoldsulfonium Clusters by a Silver(I) Ion

“…Depending on the stoichiometry of the reactions stable products with various S/ Au ratios have been found, including monosulfur species of the type [S(AuL)2], [S(AuL)3]+ and [S(AuL)4]2+ where the gold atoms carry stabilizing phosphine ligands L [1,2]. With a deficit of L, or in the absence of L, ring and cage anions are formed with intriguing compositions and struc tures like [S2A u(A uL)4]+, [AuS9]~, [Au2S8]2', or [Au12S8]4+ [3][4][5][6].…”