SYNTHESIS AND STRUCTURE OF [HG(SC6H2BU(+)3)2(PY)] - A T-SHAPED COMPLEX OF MERCURY

Crystallization of Hg(SC6H2But3)2 from pyridine gives the three-coordinate adduct Hg(SC6H2But3)2(py) whose structure has been determined. The T-shaped molecule, with Hg-S bonds of normal length [2.335(2) angstrom], a wide S-Hg-S angle [172.1(1)-degrees], a weakly associated pyridine ligand [2.677(7) angstrom] and nearly co-planar aryl substituents, adopts a ''tuning-fork'' geometry.