Coordination chemistry of amidoximes. Molybdenum complexes of (alkyl)aminoacetamidoximes and fumaromonoamidoxime
摘要:
Reactions of (n-Bu4N)(2)[Mo2O7] or (n-Bu4N)(4)[alpha-Mo8O26] with RR'NCH2C(NH2)NOH (.) HCl (R = R' = H; R = H, R' = Me; R = R'= Me) inorganic solvents give complexes containing a cyclic {Mo4O12} core. The adduct [MO4O12{(Me2NHCH2C(NH2))NO}(2)]. 2(n-Bu4N)Cl has been characterized by X-ray diffraction. The complex [MO4O12{(Me2NHCH2C(NH2))NO}(2)] displays a cyclic (MoO2)(4)(mu-O)(4) ring capped by two zwitterionic amidoxime ligands through the nitrogen and oxygen atoms of the oximate group in the mu(3)-kappaN:kappa(2)O mode which is also observed for the monoamidoxime of fumaronitrile in (n-Bu4N)(2)[Mo4O12{(N=C-CH=CH-C(NH2))NO}(2)]. (C) 2002 Elsevier Science B.V. All rights reserved.