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-Me2-pyridine, PPh3) with Na[BH4]. 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 Ph3P and CO to give stable mononuclear hydrides.

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))(mu-H)](n), are formed depending on the nature of the neutral ligand, L. The unsaturated 14-electron fragments [Pt(N'-C(3))(mu-H)] assemble to form oligomers with bridging hydrides. Spectroscopic characterization provides evidence for tetramers both in solution ((1)H NMR) and in vapor phase (ESI-MS). In the tetrameric systems the 2e-3c Pt-H-Pt bond is cleaved by pi-acceptor ligands such as Ph(3)P and CO to give stable mononuclear hydrides.

N,C "Rollover" cyclometalated platinum(II) hydrides: Mono- and polynuclear derivatives / Minghetti, G; Stoccoro, Sergio; Cinellu, Maria Agostina; Petretto, Giacomo Luigi; Zucca, Antonio. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 27:14(2008), pp. 4.3415-4.3421. [10.1021/om800027g]

N,C "Rollover" cyclometalated platinum(II) hydrides: Mono- and polynuclear derivatives

STOCCORO, Sergio;CINELLU, Maria Agostina;PETRETTO, Giacomo Luigi;ZUCCA, Antonio
2008-01-01

Abstract

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-Me2-pyridine, PPh3) with Na[BH4]. 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 Ph3P and CO to give stable mononuclear hydrides.
2008
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))(mu-H)](n), are formed depending on the nature of the neutral ligand, L. The unsaturated 14-electron fragments [Pt(N'-C(3))(mu-H)] assemble to form oligomers with bridging hydrides. Spectroscopic characterization provides evidence for tetramers both in solution ((1)H NMR) and in vapor phase (ESI-MS). In the tetrameric systems the 2e-3c Pt-H-Pt bond is cleaved by pi-acceptor ligands such as Ph(3)P and CO to give stable mononuclear hydrides.
N,C "Rollover" cyclometalated platinum(II) hydrides: Mono- and polynuclear derivatives / Minghetti, G; Stoccoro, Sergio; Cinellu, Maria Agostina; Petretto, Giacomo Luigi; Zucca, Antonio. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 27:14(2008), pp. 4.3415-4.3421. [10.1021/om800027g]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/62563
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