Two novel polymeric bismuth(III) complexes with dmit: syntheses and structures of {[Et4N][Bi(dmit)2]}n and {[Et4N]2[Bi2(dmit)4]·Et2O}n (dmit=1,3-dithiole-2-thione-4,5-dithiolate)

Abstract Two novel polymeric bismuth(III) complexes with dmit, {[Et 4 N][Bi(dmit) 2 ]} n (1) and {[Et 4 N] 2 [Bi 2 (dmit) 4 ]·Et 2 O} n (2), have been synthesized and structurally characterized. Complex 1 is a one-dimensional polymer consisting of repeating Bi(dmit) 2 units in which each Bi atom is six-coordinated by six sulfur atoms from dmit ligands to form a distorted octahedron. Whereas the anions of complex 2 can be described as polymeric chains being composed of the repeating dimeric Bi 2 (dmit) 4 units, in which the environment of the Bi atoms are similar to that in complex 1. In contrast to 1, there exists S⋯S contacts less than 3.7 A between two neighboring independent polymeric anions in complex 2, through which complex 2 forms a quasi two-dimensional structure.