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Issue 43, 2016
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cis-Conformation of indigo in the coordination complex (indigo-O,O)(Cp*CrIICl)

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Abstract

The interaction of decamethylchromocene (Cp*2Cr) with indigo in the presence of a Cl source yields the coordination complex (indigo-O,O)(Cp*CrIICl) (1) in which one Cp* ligand at chromium is substituted by indigo. Indigo adopts an unusual cis-conformation in 1, allowing the coordination of both indigo carbonyl groups to one CrII center. Complex 1 contains CrII with an S = 1 spin state and indigo0. At the same time, calculations show that an excited ionic state is positioned close to the neutral ground state, providing the appearance of intense low-energy NIR bands in the spectrum of 1 at 820 and 1002 nm attributed to metal-to-ligand charge transfer.

Graphical abstract: cis-Conformation of indigo in the coordination complex (indigo-O,O)(Cp*CrIICl)

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Publication details

The article was received on 12 Sep 2016, accepted on 01 Oct 2016 and first published on 03 Oct 2016


Article type: Communication
DOI: 10.1039/C6DT03545K
Citation: Dalton Trans., 2016,45, 17095-17099
  • Open access: Creative Commons BY license
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    cis-Conformation of indigo in the coordination complex (indigo-O,O)(Cp*CrIICl)

    D. V. Konarev, S. S. Khasanov, A. V. Kuzmin, A. F. Shestakov, A. Otsuka, H. Yamochi, G. Saito and R. N. Lyubovskaya, Dalton Trans., 2016, 45, 17095
    DOI: 10.1039/C6DT03545K

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