The coordination of bis(phosphino)ferrocene ligands to metals with a tetrahedral geometry is examined. In the case of [Ni(dRpf)Cl2] (dRpf = 1,1′-bis(diphenylphosphino)ferrocene (dppf), 1,1′-bis(diiso-propylphosphino)ferrocene (dippf), 1,1′-bis(dicyclohexylphosphino)ferrocene (dcpf) or 1,1′-bis(ditert-butylphosphino)ferrocene (dtbpf)) these compounds are paramagnetic. Halide abstraction from [Ni(dRpf)Cl2] using Na[BArF] (BArF = tetrakis(3,5-bis(trifluoromethyl)phenyl)borate) results in the formation of a yellow, diamagnetic product. In the case of [Zn(dRpF)Cl2], the tetrahedral compounds are diamagnetic. Coordination of the dRpf ligands is compared to that of their phosphine oxide analogues, dRpfO2. The X-ray crystal structures of [Zn(dtbpf)Cl2] and [Zn(dtbpfO2]Cl2] were obtained and the difference in the ligand bite angle (P-Zn-P for dtbpf and O-Zn-O for dtbpfO2) is presented. In addition, the oxidative electrochemistry of these compounds is examined.

Tetrahedral compounds with bis(phosphino)ferrocene ligands

251st National Meeting (2016)

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