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Heavier Pnictinidene Gold(I) Complexes.


N,C,N-chelated pnictinidenes ArE [where E = As, Sb or Bi; Ar = 2,6-(tBuN=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 an immediate deposition of gold metal and oxidation of the bismuth atom giving ArBiCl2. The treatment of tetrameric gold alkynyl complex [Au(CCPh)]4 with ArAs and ArSb gave ionic compounds [Au(ArAs)2]+[Au2(CCPh)3]- [denoted as 3+[Au2(CCPh)3]-] and [Au(ArSb)2]+[Au(CCPh)2]- [denoted as 4+[Au(C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, 13C NMR, high mass accuracy electrospray ionization mass spectrometry (ESI-MS), IR and Raman spectroscopy and (except 1) by the 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.

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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, Accepted Manuscript
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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. Cisarova and L. Dostál, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT03022G

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