Crystal structure and Hirshfeld surface analysis of (1H-imidazole-κN ³)[N-(2-oxidobenzylidene)tyrosinato-κ³ O,N,O′]copper(II)

Abstract

The title copper(II) complex, [Cu(C16H13NO4)(C3H4N2)], consists of a tridentate ligand synthesized from L-tyrosine and salicylaldehyde. One imidazole molecule is additionally coordinating to the copper(II) ion. The crystal structure features N—H...O, O—H...O and C—H...O hydrogen bonds. The Hirshfeld surface analysis indicates that the most important contributions to the packing are from H...H (37.9%), C...H (28.2%) and O...H/H...O (21.2%) contacts.

Improvement of the SOD activity of the Cu2+ complexes by hybridization with lysozyme and its hydrogen bond effect on the activity enhancement

“…The small τ value (τ = 0.04) indicates that the structure of the five-coordinated unit is square pyramidal (Addison et al, 1984). These crystal structures are similar with previously reported Cu 2+ complexes with the similar amino acid moiety (Katsuumi et al, 2020;Otani et al, 2021;Suzuki et al, 2023).…”