Counter anion dependent symmetry of Cu-II-4-amino-1,2,4-triazole polymeric chains

The symmetry changes and length of the symmetry independent part of [Cu(amtrz)(3)](n)(2+)(amtrz = 4-amino-1,2,4-triazole) polymeric chains driven by different anions in crystals with BF4 (-) (1), BF4- /SiF62-(2) and SiF62 (-)(3) have been studied by single crystal X-ray method.