Benzothiarsolium cations: evidence for pπ-bonding between arsenic and sulfur in the first structurally characterized arsenium system

Abstract

. Can. J. Chem. 703 (1992). 70,Tetrachloroaluminate salts of the benzothiazarsolium and toluodithiarsolium heteronaphthalenic cations have been prepared from the corresponding chloroarsoles by a routine halide ion abstraction procedure. Characterization data are presented, including the X-ray crystal structure of the tbiaza derivative.

Structural characteristics of 2-halo-1,3,2-dithiarsenic compounds and tris-(pentafluorophenylthio)-arsen

“…Since that time, the only work in this area was the use of arsenic dithiolates cations as carbene analogues [4,5] (Fig. 1).…”

Supramolecular aggregation in dithia-arsoles: chlorides, cations and N-centred paddlewheels

“…23 A number of other structures in the CSD also exhibit such [As-Cl]2 mo-tifs. 24 These dimers are then linked via additional As⋯Cl contacts (3.453 7)-3.951 8) Å) generating a chain motif.…”

Preparation and structure of 2-chloro-1,3-dimethyldiaza-2-arsenane, 1,3-dimethyldiaza-2-arsenanium tetrachlorogallate, and butadiene cycloadducts of diazarsenium cations

“…Despite the identification of various arsenium cations l b (5,6), few examples have been comprehensively characterized (7), and the heavier congeneric systems l c (8,9) and l d (9,10) are rarely mentioned in the literature. The use of a Hiickel framework 2 allowed for the isolation of the first arsenium derivative (11). However, in the absence of such charge delocalization, heterolytic As-CI bond cleavage from the chloroarsolidines 3C1 and 4C1 provided dimeric structures 6 in the solid state (7), in contrast to the phospholidinium 7 analogue (2).…”