Poly[[μ 4 -3,4,8,10,11,13-hexa-hydro-1 H ,6 H -bis-([1,4]di-thio-cino)[6,7- b :6',7'- e ]pyrazine]di-μ-iodido-dicopper(I)]: a two-dimensional copper(I) coordination polymer.

The reaction of ligand 3,4,8,10,11,13-hexa-hydro-1 H ,6 H -bis-([1,4]di-thio-cino)[6,7- b :6',7'- e ]pyrazine ( L ) with CuI led to the formation of a two-dimensional coordination polymer, incorporating a [Cu 2 I 2 ] motif. These units are linked via the four S atoms of the ligand to form the title two-dimensional coordination poly-mer, poly[[μ 4 -3,4,8,10,11,13-hexa-hydro-1 H ,6 H -bis-([1,4]di-thio-cino)[6,7- b :6',7'- e ]pyrazine]di-μ-iodido-dicopper(I)], [Cu 2 I 2 (C 12 H 16 N 2 S 4 )] n , ( I ). The asymmetric unit is composed of a ligand mol-ecule, two copper(I) atoms and two I - ions. Both copper(I) atoms are fourfold S 2 I 2 coordinate with almost regular trigonal-pyramidal environments. In the crystal, the layers, lying parallel to (102), are linked by C-H⋯I hydrogen bonds, forming a supra-molecular framework.