Tetrahedral [HnPt4(CO)4(PP)2]n+ (n = 1, 2; PP = CH2鈺怌(PPh2)2) Cationi
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- 作者：Iacopo Ciabatti ; Cristina Femoni ; Maria Carmela Iapalucci ; Giuliano Longoni ; Stefano Zacchini
- 刊名：Organometallics
- 出版年：2013
- 出版时间：September 23, 2013
- 年：2013
- 卷：32
- 期：18
- 页码：5180-5189
- 全文大小：464K
- 年卷期：v.32,no.18(September 23, 2013)
- ISSN：1520-6041
文摘
The reaction of [Pt12(CO)24]2鈥?/sup> with CH2鈺怌(PPh2)2 (PP) results in the neutral tetrahedral cluster Pt4(CO)4(PP)2. This reacts with strong acids such as HBF4 to afford, first, the [HPt4(CO)4(PP)2]+ monohydride monocation and, then, the [H2Pt4(CO)4(PP)2]2+ dihydride dication. The three clusters have been fully characterized in solution by means of IR and 1H and 31P NMR spectroscopy. Both Pt4(CO)4(PP)2 and [H2Pt4(CO)4(PP)2]2+ are static in solution, whereas [HPt4(CO)4(PP)2]+ displays a fluxional behavior of the unique hydride ligand. In addition, the molecular structures of all these clusters have been fully determined in the solid state via single-crystal X-ray diffraction, showing that all of them possess the same 56-electron tetrahedral Pt4(CO)4(PP)2 core to which the hydride ligands are added stepwise.