Non-Parallel Stacking of a One-Dimensional Rod and Loop Chain Cd(II) Complex With the Semi-Rigid 3,3′-Bipyridyl Ligand

Abstract

A new Cd(II) complex [Cd(L)1.5(NO3)2]n·2nCHCl3 (1) with a semi-rigid 3,3′-bipyridyl ligand [L = N,N′-bis(3-pyridylmethyl)pyromellitic diimide], has been synthesized and structurally characterized by X-ray diffraction analysis. It consists of one-dimensional rod and loop chains featuring the combination of Z c -(anti, cis) and Z t -(anti, trans) mode conformations for the coordinated ligands. The one-dimensional chains are assembled in parallel and non-parallel directions into three-dimensional networks by complicated supramolecular interactions. The solid photoluminescence of 1 was also investigated at room temperature. The 1D rod and loop chains coordination polymer [Cd(L)1.5(NO3)2]n·2nCHCl3 (1) is obtained from the semi-rigid 3,3′-bipyridyl L ligand featuring the combination of Z c -(anti, cis) and Z t -(anti, trans) mode conformations. The one-dimensional chains are assembled in parallel and non-parallel directions into three-dimensional networks by complicated supramolecular interactions.