title: A nitronyl nitroxide complex of nickel(II) with nitrate as a ligand.
abstract: The complex cation in [4,5-dihydro-4,4,5,5-tetramethyl-2-(2-pyridyl-kappa N)imidazol-1-oxyl 3-oxide-kappa O(3)](nitrato-kappa(2)O,O')(N,N,N',N'-tetramethyl-1,2-ethanediamine-kappa(2)N,N')nickel(II) hexafluorophosphate dichloromethane solvate, [Ni(NO(3))(C(6)H(16)N(2))(C(12)H(16)N(3)O(2))]PF(6) x CH(2)Cl(2), is the first example of a nitronyl nitroxide complex of a transition metal ion having d electrons in which nitrate is coordinated as a bidentate ligand. Owing to the smaller steric requirement of NO(3)(-), the Ni-O(nitroxide) bond length [2.014 (2) A] is remarkably shorter than that in the corresponding beta-diketonate complexes [2.052 (4)-2.056 (2) A].
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yoshida
authors.forename: T
authors.initials: T
authors.lastname: Suzuki
authors.forename: S
authors.initials: S
authors.lastname: Kaizaki