名称:
Tetraphenylphosphonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)aurate(III) acetone solvate and ethyltriphenylphosphonium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)aurate(III)
摘要:
In the two title complexes, (C24H20P)[Au(C3S5) 2] center dot C3H6O, (I), and (C20H20P)[Au(C3S5)(2)], (II), the Au III atoms exhibit square-planar coordinations involving four S atoms from two 2-thioxo-1,3-dithiole-4,5-dithiolate (dmit) ligands. The Au-S bond lengths, ranging from 2.3057 (8) to 2.3233 (7) angstrom in (I) and from 2.3119 (8) to 2.3291 (10) angstrom in (II), are slightly smaller than the sum of the single- bond covalent radii. In (I), there are two halves of independent Ph4P+ cations, in which the two P atoms lie on twofold rotation axis sites. The Ph4P+ cations and [Au(C3S5)(2)]. anions are interspersed as columns in the packing. Layers composed of Ph4P+ and [Au(C3S5)(2)]. are separated by layers of acetone molecules. In (II), the [Au(C3S5)(2)]. anions and EtPh3P+ counter-cations form a layered arrangement, and the [Au(C3S5)(2)]. anions form discrete pairs with a long intermolecular Au center dot center dot center dot S interaction for each Au atom in the crystal structure.