Molecular routes to metal oxides and metal silicates. synthesis and thermal decomposition studies of eclipsed Mo_2[O_2Si(O~tBu)_2]_3 and W_2(NHMe_2)_2[O_2Si(O~tBu)_2]_2 [OSi(OH)(O~tBu)_2]_2

摘要

Reaction of Mo_2(NMe_2)_6 with 3 equiv of (~tBuO)_2Si(OH)_2 afforded a new siloxide complex, Mo_2[O_2Si(O~tBu)_2]_3 (1), as the only metal-containing product. An X-ray crystal structure determination reveals that 1 adopts an eclipsed structure with three di-tert-butoxy- silanediolato ligands bridging the molybdenum centers in a symmetrical fashion.