Novel Heterobimetallic Coordination of the H_2B(mt)_2 Ligand: The Complex [Mo(SnMe_2Cl)(CO)_3{mu-S:kappa~3-H,S,S'-H_2B(mt)_2}] (mt=methimazolyl)

摘要

Molybdenum stannyl complexes ligated by poly(methimazolyl)borate ligands are accessible via complementary strategies involving oxidative addition of either Ph_3Sn{HB(mt)_3} (mt=methimazolyl) or [Me_2-Sn{H_2B(mt)_2}]Cl to molybdenum(0) precursors or alternatively via reactions of halostannanes with the salts Na[Mo(CO)_3{H_xB(mt)_(4-x)}] (x=1,2).One example provides a novel complex in which the H_2B(mt)_2 ligand bridges both molybdenum and tin,thereby providing a model for an intermediate in the oxidative addition protocol.