Synthesis and Characterization of Mononuclear, Pseudotetrahedral Cobalt(III) Compounds
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Author(s)
Kozhukh, Julia
Minier, Mikael Antoine
Lippard, Stephen J.
Date Issued
December 2014
Journal
Inorganic Chemistry
Publisher
American Chemical Society (ACS)
Citation
Kozhukh, Julia, Mikael A. Minier, and Stephen J. Lippard. “Synthesis and Characterization of Mononuclear, Pseudotetrahedral Cobalt(III) Compounds.” Inorg. Chem. 54, no. 2 (January 20, 2015): 418–424. © 2014 American Chemical Society.
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Final published version
Abstract
The preparation and characterization of two mononuclear cobalt(III) tropocoronand complexes, [Co(TC-5,5)](BF[subscript 4]) and [Co(TC-6,6)](BPh[subscript 4]), are reported. The cobalt(III) centers exist in rare pseudotetrahedral conformations, with twist angles of 65° and 74° for the [Co(TC-5,5]+ and [Co(TC-6,6)]+ species, respectively. Structural and electrochemical characteristics are compared with those of newly synthesized [Ga(TC-5,5)](GaCl[subscript 4]) and [Ga(TC-6,6)](GaCl[subscript 4]) analogues. The spin state of the pseudotetrahedral [Co(TC-6,6)](BPh[subscript 4]) compound was determined to be S = 2, a change in spin state from the value of S = 1 that occurs in the square-planar and distorted square-planar complexes, [Co(TC-3,3)](X) (X = BPh[subscript 4], BAr′[subscript 4]) and [Co(TC-4,4)](BPh[subscript 4]), respectively.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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DOI of Published Version
https://doi.org/10.1021/ic5009279
