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Syntheses of tetrakis(benzylisocyanide)bis(tri-i-propylphosphite) cobalt(III) tetrafluoroborate: comparison with trialkylphosphine–alkylisocyanide complexes of cobalt(III)

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Abstract

Tetrakis(benzylisocyanide)bis(tri-i-propylphosphite)cobalt(III) tetrafluoroborate, [Co(CNCH2Ph)4{P(OCHMe2)3}2] (BF4)3, has been synthesized by ligand substitution of both [Co(CNCH2Ph)4{OAs(C6H4Me-p)3}2](BF4)3 and [Co(CNCH2Ph)4(OSbPh3)2](BF4)3. IR and electronic spectra, magnetic susceptibility, and cyclic voltammetric measurements are reported. The data are consistent with low-spin tetragonal coordination; i.e., trans-[Co(CNCH2Ph)4{P(OCHMe2)3}2](BF4)3. Comparison is made with tetrakis(alkylisocyanide)bis(trialkylphosphine) cobalt(III) complexes.

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Correspondence to Clifford A. L. Becker.

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Becker, C.A.L., Mosetlha, K. & Ahmad, J. Syntheses of tetrakis(benzylisocyanide)bis(tri-i-propylphosphite) cobalt(III) tetrafluoroborate: comparison with trialkylphosphine–alkylisocyanide complexes of cobalt(III). Transition Met Chem 32, 799–802 (2007). https://doi.org/10.1007/s11243-007-0262-y

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Keywords

  • Cobalt
  • MeCN
  • Isocyanide
  • Ligand Substitution
  • Cyclic Voltammetric Measurement