Geometries and electronic structures of group 10 and 11 metal carbonyl cations, [M(CO)n]x+ (Mx+ = Ni2+, Pd2+, Pt2+, Cu+, Ag+, Au+; n = 1-4)

Koichi Mogi, Yoshiko Sakai, Takaaki Sonoda, Qiang Xu, Yoshie Souma

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    16 Citations (Scopus)

    Abstract

    The geometry and electronic structure of group 10 and 11 metal carbonyl cations, [M(CO)n]x+ (Mx+ = Ni2+, Pd2+, Pt2+, Cu+, Ag+, Au+; n = 1-4), were examined by the hybrid density functional method (B3LYP) and the coupled cluster method (CCSD(T)). For group 10 metals, monocarbonyl cations have C∞v structures, dicarbonyl cations have D∞h and C structures, and tri- and tetracarbonyl cations have C2v and D4h structures, respectively. Group 11 metal carbonyl cations have C∞v, D∞h, D3h, and Td structures for mono-, di-, tri-, and tetracarbonyls, respectively. The (CO)n-1Mx+-CO dissociation energies D0 (CO) of group 10 metal carbonyl cations are significantly larger than those of group 11 metal carbonyl cations. Group 10 metal tetracarbonyl cations are still stable, while for group 11 metals, D0 (CO) is significantly reduced in going from dicarbonyls to tri- and tetracarbonyls. The vibrational frequencies v(CO) are higher by 110-165 cm-1 for group 10 metal complexes and by 45-115 cm-1 for group 11 metal complexes than that for free CO (2143 cm-1).

    Original languageEnglish
    Pages (from-to)3812-3821
    Number of pages10
    JournalJournal of Physical Chemistry A
    Volume107
    Issue number19
    DOIs
    Publication statusPublished - May 15 2003

    All Science Journal Classification (ASJC) codes

    • Physical and Theoretical Chemistry

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