Catena-Poly[[(6,7,9,10,17,18,20,21-octa-hydro-5,8,11,16,19, 22-hexaoxadibenzo[a,j]cyclo-octadecene)barium]-di μ- Thio-cyanato- [thiocyanato-diaurate(I)(Au-Au)]-μ-thiocyanato]

Abstract

In the title compound, [Au2Ba(NCS)4(C20H24O 6)] n , the dithio - cyanato-aurate(I) anion adopts a dimeric structure with an Au⋯Au distance of 3.1109 (10) Å; both Au I atoms are also bonded to two S atoms. The BaII ion adopts an irregular BaN3O6 geometry, arising from the crown ether and three adjacent thio-cyanate N atoms; the extended structure of the complex can be described as a one-dimensional coordination polymer generated by the Ba⋯N inter-actions (two on the endo side and one on the exo side of the crown ether) running parallel to the b axis, with an anti-parallel arrangement of ribbons in the unit cell.