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

被引：36

作者：

Minghetti, Giovanni ^{[1
]}

Stoccoro, Sergio ^{[1
]}

Cinellu, Maria Agostina ^{[1
]}

Petretto, Giacomo Luigi ^{[1
]}

Zucca, Antonio ^{[1
]}

机构：

[1] Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy

来源：

ORGANOMETALLICS | 2008年 / 27卷 / 14期

关键词：

D O I：

10.1021/om800027g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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, PPh3) with Na[BH4]. 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 (H-1 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 Ph3P and CO to give stable mononuclear hydrides.

引用

页码：3415 / 3421

页数：7

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