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catena-Poly[[(6,7,9,10,17,18,20,21-octahydro-5,8,11,16,19,22-hexaoxadibenzo[a,j]cyclooctadecene)barium]-di-μ-thiocyanato-[thiocyanatodiaurate(I)(Au—Au)]-μ-thiocyanato]

Acta Crystallographica Section E 01/2009; DOI: 10.1107/S1600536809045218/hb5102sup0.html
Source: DOAJ

ABSTRACT In the title compound, [Au2Ba(NCS)4(C20H24O6)]n, the dithiocyanatoaurate(I) anion adopts a dimeric structure with an Au...Au distance of 3.1109 (10) Å; both AuI atoms are also bonded to two S atoms. The BaII ion adopts an irregular BaN3O6 geometry, arising from the crown ether and three adjacent thiocyanate N atoms; the extended structure of the complex can be described as a one-dimensional coordination polymer generated by the Ba...N interactions (two on the endo side and one on the exo side of the crown ether) running parallel to the b axis, with an antiparallel arrangement of ribbons in the unit cell.

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