3 research outputs found
{Ba[Au(SCN)2]2}n: a three-dimensional net comprised of monomeric and trimeric gold(I) units
The noteworthy structural feature of the title complex, poly[acetonitriletetra-μ2-thiocyanato-barium(II)digold(I)], {[Au2Ba(SCN)4(CH3CN)]}n, is that the bis(thiocyanato)aurate(I) anion adopts both monomeric and trimeric motifs. The trimer unit has an Au⋯Au distance of 3.1687 (3) Å. In both the monomeric and trimeric units, the AuI atoms are also bonded to two S atoms. Within the trimeric unit, the AuI atoms exist in differing environments; one Au atom has a T-shaped three-coordinate geometry while the other has a square-planar four-coordinate geometry. The AuI atom of the monomer adopts a linear two-coordinate geometry. The extended structure can be described as a three-dimensional coordination polymer consisting of chains of Ba atoms bridged by thiocyanate N atoms. These chains are cross-linked via the gold monomeric and trimeric units