Two new complexes with 6-methylnicotinic acid ligand: Synthesis, crystal structure and Hirshfeld surfaces
摘要:
Two new complexes derived from 6-methylnicotinic acid: 1(Mn(C7H6NO2)(2)(H2O)(2)) and 2 ([Ni(C7H7NO2)(2)C-l(2)(H2O)2] center dot 4H2O) have been synthesized and characterized. In complex 1, the Mn-II ion exhibits a distorted octahedral geometry and featured with 1D chain, while the Ni-II ion in complex 2 exhibits a regular octahedral geometry and featured with intricate 3D motif. We further compared the molecular Hirshfeld surface and fingerprint plot analysis of ligand 6-methylnicotinic acid in complexes 1 and 2 with the individual 6-methylnicotinic acid, for the purpose of investigating the influence of different metals on the intermolecular interaction around 6-methylnicotinic acid. Which revealed that the closest contacts of these two complexes were dominated by H center dot center dot center dot H, H center dot center dot center dot O, N center dot center dot center dot H, C-H center dot center dot center dot pi and pi center dot center dot center dot pi (C-C) interactions, and the complexation with transition metals lead to the increase of C-H center dot center dot center dot pi interactions while the decrease of H-H, N-H, and pi center dot center dot center dot pi interactions. (c) 2013 Elsevier B. V. All rights reserved.