Minghetti, Giovanni and Stoccoro, Sergio and Cinellu, Maria Agostina and Petretto, Giacomo Luigi and Zucca, Antonio (2008) N,C “rollover” cyclometalated platinum(II) hydrides: mono- and polynuclear derivatives. Organometallics, Vol. 27 (14), p. 3415-3421. eISSN 1520-6041. Article.
Full text not available from this repository.
N,C cyclometalated platinum(II) hydrides were obtained by reaction of the “rollover” derivatives [Pt(N′−C(3))(Cl)(L)] (N−CH= 6- tert-butyl- and 6-phenyl-2,2′-bipyridine; L = DMSO, 3,5-Me 2-pyridine, PPh 3) with Na[BH 4]. Mono- or polynuclear hydrides, [Pt(N′−C(3))(H)(L)] or [Pt(N′−C(3))(μ-H)] n , are formed depending on the nature of the neutral ligand, L. The unsaturated 14-electron fragments [Pt(N′−C(3))(μ-H)] assemble to form oligomers with bridging hydrides. Spectroscopic characterization provides evidence for tetramers both in solution (1H NMR) and in vapor phase (ESI-MS). In the tetrameric systems the 2e−3c Pt−H−Pt bond is cleaved by π-acceptor ligands such as Ph 3P and CO to give stable mononuclear hydrides.
I documenti depositati in UnissResearch sono protetti dalle leggi che regolano il diritto d'autore
Repository Staff Only: item control page