title: Cobalt azide complexes with a tris(carbene)borate ligand scaffold.
abstract: The four-coordinate Co(II) complex, (azido-κN)[1,1,',1''-(phenylboranetriyl)tris(3-tert-butyl-1H-imidazol-2-ylidene)]cobalt(II), [Co(C27H38BN6)(N3)], (1), denoted PhB(t-BuIm)3CoN3, was prepared by the reaction of the corresponding chloride complex with NaN3. One-electron oxidation results in the isolation of the five-coordinate Co(III) complex, bis(azido-κN)[1,1,',1''-(phenylboranetriyl)tris(3-tert-butyl-1H-imidazol-2-ylidene)]cobalt(III), [Co(C27H38BN6)(N3)2], (2), denoted PhB(t-BuIm)3Co(N3)2. Attempts to prepare cobalt nitrides by thermolysis or photolysis of these complexes were unsuccessful.
authors.affiliation: Department of Chemistry and Biochemistry, New Mexico State University, MSC 3C, Las Cruces, NM 88003, USA.
authors.forename: Jeremiah J
authors.initials: JJ
authors.lastname: Scepaniak
authors.forename: Charles G
authors.initials: CG
authors.lastname: Margarit
authors.forename: Ranko P
authors.initials: RP
authors.lastname: Bontchev
authors.forename: Jeremy M
authors.initials: JM
authors.lastname: Smith
keywords: crystal structure; scorpionates; tris(carbene)borates