Taming copper(I) cyanate and selenocyanate with N-heterocyclic carbenes

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Dodds, Christopher A and Kennedy, Alan R and Thompson, Ross (2019) Taming copper(I) cyanate and selenocyanate with N-heterocyclic carbenes. European Journal of Inorganic Chemistry, 2019 (31). pp. 3581-3587. ISSN 1434-1948 (https://doi.org/10.1002/ejic.201900515)

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Abstract

The synthesis of N-heterocyclic carbene (NHC) adducts of copper(I) cyanate and copper(I) selenocyanate has been successfully achieved via the reaction of [Cu(NHC)Cl] with silver(I) cyanate and potassium selenocyanate respectively. Three copper(I) cyanate complexes [Cu(IXy)(NCO)] (1), [Cu(IPr)(NCO)] (2) and [Cu(SIPr)(NCO)] (3) [IXy = 1,3-bis(2,6-dimethylphenyl)imidazol-2-ylidene, IPr = 1,3- bis(2,6-diisopropylphenyl)imidazol-2-ylidene, SIPr = 1,3-bis(2,6- diisopropylphenyl)imidazolin-2-ylidene] have been prepared and fully characterised. The X-ray crystal structures reveal the three complexes to be monomeric species in which the cyanate ligand is end-on, N-bound. These complexes, represent the first examples of monomeric copper(I) cyanate complexes. In addition, the copper(I) selenocyanate species [Cu(IPr)(NCSe)]2 (4) was prepared and fully characterised. The X-ray crystal structure reveals that a centrosymmetric dimer is formed with bridging selenocyanate ligands bound through both N and Se. This is in contrast to the monomeric structure observed in the previously reported and related complex [Cu(IPr)(NCS)]. Complex 4 represents a rare example of a stable dimeric adduct of copper(I) selenocyanate.

ORCID iDs

Dodds, Christopher A ORCID logoORCID: https://orcid.org/0000-0002-4590-0307, Kennedy, Alan R ORCID logoORCID: https://orcid.org/0000-0003-3652-6015 and Thompson, Ross;
  • Item type:Article
    ID code:69092
    Dates:
    Date
    Event
    25 August 2019
    Published
    12 July 2019
    Accepted
    Notes:© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Dodds, C.A., Kennedy, A.R. and Thompson, R. (2019), Taming Copper(I) Cyanate and Selenocyanate with N-Heterocyclic Carbenes. Eur. J. Inorg. Chem., 2019: 3581-3587. https://doi.org/10.1002/ejic.201900515
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:29 Jul 2019 10:25
    Last modified:16 Dec 2024 02:09
    URI:https://strathprints.strath.ac.uk/id/eprint/69092
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