B-N bond cleavage by cobalt(II) in acetato(3,5-diphenylpyrazole)[tris(3,5-diphenylpyrazolyl)borato]cobalt(II).
The reaction of cobalt(II) acetate with potassium tris(pyrazolyl)borate (KTp(Ph2)) affords the title complex, [Co(Tp(Ph2))(O2CMe)(Hpz(Ph2))] (Hpz(Ph2) is 3,5-diphenylpyrazole) or [Co(C45H34BN6)(C2H3O2)(C15H12N2)], as a result of cobalt-induced B-N bond cleavage of the tris(pyrazolyl)borate ligand. The cobalt complex exhibits a distorted CoN(4)O coordination geometry with a kappa(3)-coordinated Tp(Ph2) ligand and monodentate acetate and pyrazole ligands. In addition, the non-coordinated acetate O atom is involved in a weak intramolecular hydrogen-bonding interaction with the pyrrole NH group.
Harding
David J
DJ
Department of Chemistry, School of Science, Walailak University, Thasala, Nakorn Si Thammarat 80160, Thailand. hdavid@wu.ac.th
Adams
Harry
H
Tuntulani
Thawatchai
T