Modified thiourea used as the ligand for the synthesis of novel coordination polymers: Based on its significant conformational behavior and H-bonding preference

Modified thiourea was used as the ligand for the synthesis of three novel coordination complexes, basing on its increased H-bond donor ability of the NH group and decreased H-bond acceptor ability of the C = S bond. Complex 1 is the first 3D network with 1D rod SBU and 2D surface SBU based on the long biscarboxylate ligand; Complex 2 has a 2D layer constructed by 1D chains via H-bonds, which shows a “plywood-like array” with a new AABB type; Complex 3 is a 3-fold interpenetrating 5-connected net with the rare 4664 topology.