期刊
ORGANOMETALLICS
卷 31, 期 20, 页码 7044-7051出版社
AMER CHEMICAL SOC
DOI: 10.1021/om300438x
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资金
- Deutsche Forschungsgemeinschaft (DFG)
The two nucleophilic heteroborates germa-closo-dodecaborate and stanna-closo-dodecaborate show different reactivity toward the electrophile [PdCl2(Xantphos)]: In the case of the germanium ligand we found straightforward substitution of one chloride ligand and formation of a Ge-Pd bond. The tin ligand also reacts to give the substitution products [PdCl(SnB11H11)(Xantphos)](-) and [Pd(SnB11H11)(Xantphos)], but the complexes exhibit a subsequent reaction under activation of a B-H and P-C bond. A dinuclear Pd(I)-Pd(I) complex featuring a P-B bond was characterized, and during its formation the evolution of benzene was detected. The respective germanium derivative does not show an activation reaction even at elevated temperature.
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