Synthesis and structural characterization of phenoxarsin-10-yl dithiocarbamates. O(C 6H 4) 2AsS 2CN(CH 2CH 2) 2, a compound containing an asymmetric mononuclear biconnective 1,1-dithiolato ligand

Abstract

Phenoxarsin-10-yl dithiocarbamates O(C 6H 4) 2AsS 2CX (X = NMe 2, NEt 2, N(CH 2CH) 2, N(CH 2CH 2) 2 or CH(CH 3)CH 2]) have been prepared by the reaction between O(C 6H 4) 2AsCl and sodium dithiocarbamates. The compounds were characterized by IR, mass and NMR ( 1H and 13C) spectroscopy. The molecular structure of O(C 6H 4) 2AsS 2CN(CH 2CH 2) 2 was determined using single-crystal X-ray diffraction. The compound is monomeric and contains an asymmetric monometallic biconnective dithiocarbamato unit (AsS(1), 2.277(1), Å; As⋯S(2), 3.183(3) Å). The double-bond character of the CN bond (1.318(5) Å) is in agreement with the NMR data. The dihedral angle (155.2°) of the phenoxarsine moiety is almost unaffected by substitution of chlorine by the dithiocarbamato ligand.