Intramolecular C-H activation in alkaline-earth metal complexes.

In: Angewandte Chemie, International Edition, Jg. 42 (2003) ; Nr. 29, S. 3430-3434
ISSN: 1433-7851
Zeitschriftenaufsatz / Fach: Chemie
Abstract:
Heteroleptic alk. earth complexes can be prepd. by ligand exchange between two homoleptic compds.; such a Schlenk equil. occurred between [Ca{(o-Me2NC6H4)CHSiMe3}2(thf)2] [CaL2(thf)2] and Ca bis(2,6-diisopropylphenyl)-b-diketiminate I (CaL'2; Ar = 2,6-diisopropylphenyl) at 50 Deg to give heteroleptic species, Ca(L')(L)(thf), which underwent dimerization to bridging complex II. I was characterized by x-ray crystallog. and the geometry of L' was optimized by ab initio methods.