Synthesis and reactivity of new chelate-N-heterocyclic biscarbene complexes of ruthenium.
The carbene-ligand precursors methylenebis(N-alkylimidazolium) iodide (alkyl = methyl, neo-pentyl) and ethylenebis(N-methylimidazolium) chloride have been used in the preparation of several new Ru(II)-p-cymene complexes where the ligand behaves as mono- and bidentate. The molecular structures of the two biscarbene-complexes are reported. From the data reported, we can conclude that steric reasons (mainly the bisimidazolium linkers, methylene/ethylene) are the main factors determining both reactivity and synthetic difficulties of the products reported.
Dpto. de Química Inorgánica y Orgánica, Universitat Jaume I Avda Sos Baynat s/n, 12080 Castellón, Spain.
Macarena
M
Poyatos
Elena
E
Mas-Marzá
Mercedes
M
Sanaú
Eduardo
E
Peris