[(t-Bu-DAD)Ti(mu,eta(2)-OCPh2)](2)Mg(mu-Cl)(2)(THF): synthesis and molecular structure of a dimeric titanium ketone complex

Reduction of [(t-Bu-DAD)TiCl(mu -Cl)](2) (1) (t-Bu-DAD: t-BuN=CHCH=Nt-Bu) w ith magnesium in the presence of benzophenone yields the MgCl2-bridged dime ric titanium ketone complex [(t-Bu-DAD)Ti(mu,eta (2)-OCPh2)](2)Mg(mu -Cl)(2 )(THF) (2) whose molecular structure largely conforms with the assumptions about the structure of the first step of the reductive coupling of ketones at low-valent titanium. (C) 2001 Elsevier Science B.V. All rights reserved.