Abstract
Reaction of t-Bu2GaCl with LiNHPh in toluene/diethylether (4 : 1) at -78°C gives the dimeric primary amido complex [t-Bu2Ga(μ-NHPh)]2 (1) in 60% yield. The reaction of t-Bu3Ga with NH2Ph at -78°C in toluene gives the adduct t-Bu3Ga·NH2Ph (2) in 75% yield. The structures of both compounds have been determined by X-ray crystallography. The molecular geometry of 1 consists of a dinuclear unit with two bridging NHPh groups and two terminal t-Bu groups bound to each gallium atom. The coordination geometry of both the gallium and nitrogen atoms is distorted tetrahedral. The molecular geometry of 2 involves a fairly long dative N→Ga donor bond [2.246(9) Å] and the configuration of the amine is distorted from an idealized tetrahedral geometry due to steric repulsions. Crystallographic data for both 1 and 2 suggest the presence of close interactions between the NH hydrogen atoms and the gallium atoms (NH ... Ga).
Original language | English |
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Pages (from-to) | 1897-1902 |
Number of pages | 6 |
Journal | Polyhedron |
Volume | 10 |
Issue number | 16 |
DOIs | |
State | Published - 1991 |
Bibliographical note
Funding Information:Acknowledgements-We thank the Robert A. Welch Foundation, the National Science Foundation and the Army Research Office (DAAL 03-89-K-0164) for support.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry