A rare supramolecular assembly involving ion pairs of coordination complexes with a host–guest relationship: synthesis, crystal structure, photoluminescence and thermal study

Abstract

A two component new coordination complex having formula {[Mn(phen)₂Cl(H₂O)]⁺ [Mn(phen)(btc)(H₂O)₃]⁻(CH₃OH)·2(H₂O)} (1) [btc = 1,3,5-benzenetricarboxylate trianion; phen = 1,10-phenanthroline] has been synthesized and characterized by X-ray single crystal structure, which reveals that one of the components is positively charge and the other is negatively charged. Complex 1 is a rare example of a coordination complex consisting of coordination ion pairs. The btc containing anionic subunits give rise to a 3D supramolecular host based on a coordination driven hydrogen bonding synthon. Cationic subunits occupy the 1D channels of the anionic supramolecular host.