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Issue 41, 2018
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Heavier pnictinidene gold(I) complexes

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N,C,N-Chelated pnictinidenes ArE [where E = As, Sb or Bi; Ar = 2,6-(tBuN[double bond, length as m-dash]CH)2C6H3] were used as ligands for the coordination of various gold(I) complexes. Thus, the reaction of ArE with [AuCl(Me2S)] gave complexes [AuCl(ArE)] [where E = As (1) or Sb (2)] that exhibited only limited stability in solution. By contrast, the reaction of ArBi with [AuCl(Me2S)] led to the immediate deposition of gold metal and the oxidation of the bismuth atom giving ArBiCl2. The treatment of a tetrameric gold alkynyl complex [Au(C[triple bond, length as m-dash]CPh)]4 with ArAs and ArSb gave ionic compounds [Au(ArAs)2]+[Au2(C[triple bond, length as m-dash]CPh)3] [denoted as 3+[Au2(C[triple bond, length as m-dash]CPh)3]] and [Au(ArSb)2]+[Au(C[triple bond, length as m-dash]CPh)2] [denoted as 4+[Au(C[triple bond, length as m-dash]CPh)2]], respectively. Finally, the reaction of ArE with the carbene gold(I) complex [Au(IPr)(MeCN)]+[BF4] [where IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene, MeCN = acetonitrile] produced ionic complexes [Au(IPr)(ArE)]+[BF4] [for cations: E = As (5+), Sb (6+) or Bi (7+)]. All complexes were characterized using 1H and 13C NMR, high mass accuracy electrospray ionization mass spectrometry (ESI-MS), IR and Raman spectroscopy and (except for 1) by single-crystal X-ray diffraction analysis. Furthermore, the structure and bonding of both neutral and ionic complexes with different coordination patterns have also been investigated in detail using a Density Functional Theory (DFT) computational approach.

Graphical abstract: Heavier pnictinidene gold(i) complexes

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Publication details

The article was received on 24 Jul 2018, accepted on 13 Sep 2018 and first published on 14 Sep 2018

Article type: Paper
DOI: 10.1039/C8DT03022G
Citation: Dalton Trans., 2018,47, 14503-14514

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    Heavier pnictinidene gold(I) complexes

    M. Kořenková, V. Kremláček, M. Erben, R. Jirásko, F. De Proft, J. Turek, R. Jambor, A. Růžička, I. Císařová and L. Dostál, Dalton Trans., 2018, 47, 14503
    DOI: 10.1039/C8DT03022G

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