Compounds Containing M-Group VI Element Bonds

Interest in the chemistry of organometallic alkoxides, and particularly aryloxides, has been continued from last year. Ethanolysis of Me2Al(OEt) does not give pure A1(OEt)3, instead 

The question of M-0 7i-bonding in monomeric aluminium and gallium aryloxides has been the subject of some controversy. The structures of several new compounds have been determined, including the first examples of three coordinate metals in a diorganometallic aryloxide. The structures reported areR2Al(OAr) (Ar = 2,6-tBu2-4-XCgH2) where R = Bu, X = Bu,Me,H R = Bu, 

In organometallic aryloxides of reduced steric demand, dimers 

---