Koizumi TA, Tanaka K, Tsuchido Y, Tanabe M, Ide T, Osakada K. Bimolecular fusion of [Pd
3(μ-CN-C
6H
3Me
2-2,6)
3(CN-C
6H
3Me
2-2,6)
3] induced by Ph
2GeH
2: formation of the redox-active Pd
6Ge
2 complex.
Dalton Trans 2019;
48:7541-7545. [PMID:
31069356 DOI:
10.1039/c9dt00814d]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of Ph2GeH2 with a planar tripalladium(0) complex, [Pd3(μ-CN-C6H3Me2-2,6)3(CN-C6H3Me2-2,6)3], selectively afforded a hexagonal bipyramidal Pd6Ge2 complex, [Pd6(μ-GePh2)2(CN-C6H3Me2-2,6)8(μ-CN-C6H3Me2-2,6)2]. The molecule is stabilized by bridging coordination of isonitrile and GePh2 ligands, although all the Pd-Pd bonds are weak, as revealed by DFT calculations. The resulting complex undergoes two successive redox processes at E1/2 = -1.35 and -1.03 V (vs. Fc+/Fc), which correspond to the stepwise oxidation of the Pd(0)6 complex.
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