Structural characteristics of 2-halo-1,3,2-dithiarsenic compounds and tris-(pentafluorophenylthio)-arsen
作者:Taimur A. Shaikh、Ronald C. Bakus、Sean Parkin、David A. Atwood
DOI:10.1016/j.jorganchem.2005.12.034
日期:2006.4
The combination of various dithiols and AsX3 (X = F, Cl) produces the series of cyclized halo-arsenic dithiolate compounds: 2-chloro-1,3,2-dithiarsolane [AsCl(SCH2CH2S)1 (1), 2-iodo-1,3,2-dithiarsolane [AsI(SCH2CH2S)](2), 2-chloro-1,3,2-dithiarsenane [AsCl(SCH2CH2CH2S)] (3), 2-iodo-1,3,2-dithiarsenane [AsI(SCH2CH2CH2S)] (4), 3-chloro4H,7H-5.6-benz-1,3,2-dithiarsepine [AsCl(SCH2)(2)(C6H4)] (5), 1,2-bis-dithiarsolan-2-ylmercapto-ethane [As-2(SCH2CH2S)(2)(SCH2CH2S)] (6) and tris-(pentafluorophenylthio)-arsen [As(SC6F5)(3)] (7). The geometry around As for these compounds is best described as trigonal pyramidal with varying degrees of distortion. Compound 1 13 crystallizes in two polymorphic forms with similar structural parameters. The compounds have been characterized by IR, H-1, F-19, and C-13 NMR, X-ray crystallography and GC-MS. (c) 2006 Elsevier B.V. All rights reserved.