title: Novel reactivity mode of hydroxamic acids: a metalla-pinner reaction.
abstract: The reaction between the nitrile complex trans-[PtCl(4)(EtCN)(2)] and benzohydroxamic acids RC(6)H(4)C([double bond]O)NHOH (R = p-MeO, p-Me, H, p-Cl, o-HO) proceeds smoothly in CH(2)Cl(2) at approximately 45 degrees C for 2-3 h (sealed tube) or under focused 300 W microwave irradiation for approximately 15 min at 50 degrees C giving, after workup, good yields of the imino complexes [PtCl(4)[NH[double bond]C(Et)ON[double bond]C(OH)(C(6)H(4)R)](2)] which derived from a novel metalla-Pinner reaction. The complexes [PtCl(4)[NH[double bond]C(Et)ON[double bond]C(OH)(C(6)H(4)R)](2)] were characterized by elemental analyses (C, H, N), FAB mass spectrometry, and IR and (1)H and (13)C[(1)H] spectroscopies, and [PtCl(4)[NH[double bond]C(Et)ON[double bond]C(OH)(Ph)](2)] (as the bis-dimethyl sulfoxide solvate), by X-ray single-crystal diffraction. The latter disclosed its overall trans-configuration with the iminoacyl species in the hydroximic tautomeric form in E-configuration which is held by N[bond]H...N hydrogen bond between the imine [double bond]NH atom and the hydroximic N atom.
authors.affiliation: St. Petersburg State University, 198504 Stary Petergof, Russian Federation.
authors.forename: Konstantin V
authors.initials: KV
authors.lastname: Luzyanin
authors.forename: Vadim Yu
authors.initials: VY
authors.lastname: Kukushkin
authors.forename: Maxim L
authors.initials: ML
authors.lastname: Kuznetsov
authors.forename: Dmitrii A
authors.initials: DA
authors.lastname: Garnovskii
authors.forename: Matti
authors.initials: M
authors.lastname: Haukka
authors.forename: Armando J L
authors.initials: AJ
authors.lastname: Pombeiro