Silanols complexes with phenol

Infrared Spectroscopic Data for Silanols and Their Complexes with Phenol... 

The tetrakis(dialkylamido) complexes [Mo(NR2)4] (R = Me,Et) have been synthesized by the reaction of MoC15 with Li(NR2) and spectroscopic evidence suggests a monomeric distorted tetrahedral geometry for the MoN4 core. These compounds are highly reactive and the methyl derivative is readily converted into [Mo(S2CNMe2)4] by insertion of CS2 into the Mo—N bonds,187 and reactions with alcohols, phenols and silanols yield alkoxy, phenoxy or silanoxy complexes176-178 (see Section 36.4.2.4.4). 

The formation and characterization of rare-earth Ln-OR (R = aryl-, alkyl-, or silyl-) alkyl aluminate complexes have been reviewed [112,113]. These complexes are essentially accessible via two routes (1) alkylaluminum adduct formatiOTi starting from a homoleptic rare-earth aryl(alk)oxide precursor and (2) protmiolysis of the corresponding phenol/alcohol/silanol source by alkane eUmination. The outcome of the reaction between homoleptic aryl(alk)oxides with AlMe3 is determined by the bulkiness of the aryl(alk)oxide ligand (Scheme 26) [133], In the resulting dinuclear complexes, the TMA units are linked through (p-OR) and (p-Me) bridges. 

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