B-N bond cleavage by cobalt(II) in acetato(3,5-diphenylpyrazole)[tris(3,5-diphenylpyrazolyl)borato]cobalt(II)

David J Harding; Harry Adams; Thawatchai Tuntulani

doi:10.1107/S0108270105014277

B-N bond cleavage by cobalt(II) in acetato(3,5-diphenylpyrazole)[tris(3,5-diphenylpyrazolyl)borato]cobalt(II)

Acta Crystallogr C. 2005 Jun;61(Pt 6):m301-3. doi: 10.1107/S0108270105014277. Epub 2005 May 20.

Authors

David J Harding¹, Harry Adams, Thawatchai Tuntulani

Affiliation

¹ Department of Chemistry, School of Science, Walailak University, Thasala, Nakorn Si Thammarat 80160, Thailand. hdavid@wu.ac.th

PMID: 15930672
DOI: 10.1107/S0108270105014277

Abstract

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.