Three supramolecular isomers of square grid networks from the assembly of a flexible spacer and Co(NCS)2:: Structures and polymer transformation

Assemblies of 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene (bbtz) and Co(NCS)(2) afford three supramolecular isomers [Co(bbtz)(2)(NCS)(2)](n) of square grid networks depending on the assembly conditions. Polymer transformation phenomena are observed among them. Conformation analysis of the ligand is presented to understand the flexibility of the bbtz ligand that influences the assembly topological architectures.