STRUCTURE AND PROPERTIES OF N,N-DI-n-BUTYLDITHIOCARBAMATO-1, 2-DICYANOETHENE-1, 2-DITHIOLATO-GOLD(III)
- 1 February 1973
- journal article
- research article
- Published by Taylor & Francis in Journal of Coordination Chemistry
- Vol. 2 (3) , 185-191
- https://doi.org/10.1080/00958977308072970
Abstract
The crystal and molecular structure and some spectral data of the compound N,N-di-n-butyldithiocarbamato-1, 2-dicyanoethene-1, 2-dithiolato-gold(III), AuS2CN(C4H9)2S2C2(CN)2, are reported. The crystal structure has been determined from a three-dimensional single-crystal X-ray diffraction study. The orthorombic cell, space group Pbca, with a=14.066(3), b=28.980(2) and c=9.192(2) Å, contains eight formula units. Intensity data were collected on an automatic diffractometer. The structural parameters were refined by full-matrix least-squares methods to a conventional R-factor of 0.047 for 1587 independent non-zero reflections. The structure determination proved the compound to be a mixed dithiocarbamato-dithiolato complex, Au(dtc)(mnt), (dtc=N,N-di-n-butyl-dithiocarbamate, mnt=maleonitriledithiolate ≡ 1, 2-dicyanoethene-1, 2-dithiolate), as expected from spectral data. The gold atom is in approximately square-planar coordination, however, deviations from mm2 (C2#) symmetry are considerable. Au-S bond distances in the dtc-moiety (2.329(5) Å and 2.324(5) Å) are significantly longer than those in the mnt-moiety (2.303(5) Å and 2.284(5) Å). The molecules are packed pairwise around inversion centres with relatively short intermolecular S-S distances.Keywords
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