Syntheses, structures and hirshfeld surface analyses of two 3D supramolecules based on nitrogen-heterocyclic tricarboxylate ligand

摘要

A Co(II) complex, Co(H(2)dppc)(2)(H2O)(2) (1) and a Cu(II) compex, Cu(H(2)dppc)(2) (2) (H(3)dppc = 3-(2,4-dicarboxylate phenyl)-2-pyridinecarboxylic acid) have been synthesized and characterized by IR, elemental analysis, single-crystal X-ray diffraction and Hirshfeld analysis methods. The magnetic properties of the two complexes are also studied. For complex 1, the Co(II) ion is coordinated by two water molecules and two deprotonated H(3)dppc ligands in N-O chelate mode to form a mononuclear complex; for complex 2, the Cu(II) ion is coordinated by two deprotonated H(3)dppc ligands in mu(2)-eta(2) :eta(1) mode to form a mononuclear complex; the two complexes are both connected into 3D supramolecules by intermolecular O-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds. Hirshfeld surface analysis and 2D fingerprint plots are used to calculate the contribution of different intermolecular interactions. This work could provide a new strategy for the rational design and synthesis of supramolecules. (C) 2019 Elsevier B.V. All rights reserved.