A series of novel heterobimetallic group 1/strontium and group 1/calcium aryloxo complexes having the composition [MAe(Odpp)3] [Ae = Sr and M = Na (1), K (2, 3), Cs (4); Ae = Ca and M = Na (5), K (6), Cs (7)] or [M 2Ae(Odpp)4] [M = Li and Ae = Sr (9), Ca (10)] have been prepared using 2,6-diphenylphenol (HOdpp) as the ligand. Through the use of solid-state direct metalation, these compounds were obtained either directly from the reaction vessel or after workup in toluene. The Lewis base adduct [KCa(Odpp)3(thf)] (8) was obtained by treatment of [KCa(Odpp) 3] (6) with tetrahydrofuran (thf). All of the compounds displayed extensive metal-π-arene interactions, which provide significant stabilization in these reactive species. The thermal stabilities and volatilities of representative heterobimetallic strontium and calcium complexes were investigated using thermogravimetric analysis.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry