Abstract
The title compound was synthesized by the interaction of arsenic(III)chloride with freshly prepared N-methylaminoethanoldithiocarbamic acid in methanol. The compound crystallized in the triclinic system, space groupPĪ with two molecules per unit cell, the dimensions area=6.509(10)A,b=14.077(3)A,c=14.195(3)A, α=64.16(2)o, β=84.67(2)o and γ=84.00(2)o. The molecule is monomeric with three short (mean 2.320(3)A) and three long (mean 2.927(2)A) As-S bonds. Asymmetry in the As-S bonds is due to the presence of stereochemically active lone pair on arsenic and the coordination polyhedron deviates from the usual D3 symmetry to C3 symmetry. Disorder exists in one of the dithiocarbamate ligands probably due to the O...O interaction arising from the water molecule. The anisobidenticity of the As-S bond distances is as a consequence of stereochemical requirement of the ligand and the lone pair of electrons on arsenic.
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