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Crystal structure of (N^C) cyclo-metalated AuIII diazide at 100 K
Volodymyr Levchenko1, Sigurd Øien-Ødegaard1, David Wragg1
1Department of Chemistry and Center for Materials Science and Nanotechnology (SMN), University of Oslo, PO Box 1126 Blindern, N-0318 Oslo, Norway.
Abstract:
The title compound, an (N^C)-cyclo-metalated gold(III) diazide, namely, di-azido-[5-eth-oxy-carbonyl-2-(5-eth-oxy-carbonyl-pyridin-2-yl)phenyl-κ2 C 1,N]gold(III), [Au(C17H16NO4)(N3)2] or Au(ppyEt)(N3)2, was synthesized by reacting Au(ppyEt)Cl2 with NaN3 in water for 24 h. The complex has been structurally characterized and features a gold center with a square-planar environment. The Au-N(azide) bond lengths are significantly different depending on the influence of the atom trans to the azide group [Au-N(trans to C) of 2.067 (2) Å versus Au-N(trans to N) of 2.042 (2) Å]. The azide groups are twisted in-and-out of plane by 56.2 (2)°.
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