作者:Vincenzo De Felice、Maria Luisa Ferrara、Achille Panunzi、Francesco Ruffo
DOI:10.1016/0022-328x(92)80238-s
日期:1992.11
Stable five-coordinate hydrido / olefincomplexes of general formula [Pt(2,9-Me2-1,10-phenanthroline)H(Cl)(olefin)] have been synthesized in high yield through oxidative addition of HCl to [Pt(2,9-Me2-1,10-phenanthroline)(olefin)] precursors. Relevant spectroscopic features and some preliminary results concerning the reactivity of the new compounds are also reported.
First Coordinatively Saturated Carbene Complexes of Platinum(II): Synthesis, Structure, and Reactivity
作者:Maria E. Cucciolito、Achille Panunzi、Francesco Ruffo、Vincenzo G. Albano、Magda Monari
DOI:10.1021/om990240r
日期:1999.8.1
Coordinatively saturated carbene complexes of platinum(II) have been obtained by oxidative addition of [ClCH=NMe2]Cl to Pt(0) precursors. The cationic products of general formula [PtCl(CHNMe2)(N,N-chelate)(olefin)]Cl have been characterized through NMR spectroscopy and for [PtCl(CHNMe2)(2,9-Me-2-1,10-phen)(Z-MeO2CCH=CHCO2Me)]Cl by X-ray diffractometry. The latter species reacts with nucleophiles affording dimethylformamide and the corresponding Pt(0) precursor [Pt(2,9-Me-2-1,10-phen)(Z-MeO2CCH=CHCO2Me)]. Attempts to obtain related complexes containing carbene groups Pt=CHY without a heteroatom in alpha-position (Y = CO2Et, CO2NMe2, CN) have led to the isolation of complexes of formula [PtR(dmphen)eta(1),eta(2)-CH(Y)O2CCH=CHCO2Me}] (R = Me, Ph), Formally derived fi om an intrasnolecular nucleophilic addition to a carbene intermediate. The X-ray structure of a representative product, [PtMe(dmphen)eta(1),eta(2)-CH(CO2Et)O2CCH=CHCO2Me}], is reported.
Binuclear platinum complexes of 4,5-disubstituted xanthenes
New binucleating ligands based on 4,5-disubstituted xanthenes have been prepared. The ligands, which display either mono(acyl, nitrile) or bi-dentate (diimino, dithioamide) functionalities, can be prepared through simple procedures from commercial sources. The molecules have been used to synthesise dinuclear platinum(II) complexes with coordination numbers 4 or 5. Relevant aspects of their spectroscopic characterisation and reactivity are discussed along with the molecular structure of a representative compound. (c) 2004 Elsevier B.V. All rights reserved.