Synthetic, EPR spectroscopic, magnetic and X-ray crystallographic structural studies on copper(II) complexes of the tridentate N2S donor ligand formed from 6-methyl-2-formylpyridine and S-methyldithiocarbazate (Hmpsme)

Synthesis and spectroscopic studies of the cobalt(II) complex with methyl 2-pyridylmethylidenehydrazinecarbodithioate (HNNS)

“…Although there have been numerous studies on the preparation and spectral characterization of the complexes, comparatively few crystal structures of these complexes have been reported [12,13]. The Schiff base (HNNS) derived from condensation of methyl hydrazinecarbodithioate with 2-pyridinecarbaldehyde is an analogue of the Schiff base (HMPSME) reported by Ali et al [14]. As a part of our comprehensive efforts towards synthesis and structural characterization of the new materials containing Nheterocycles with proven bioactivity, such as antibacterial, antifungal, chemotherapeutic effects as well, we report herein the synthesis, spectroscopy and crystallographic characterization of a new cobalt(II) complexes with the title ligand (HNNS).…”

New insight into the structural, electrochemical and biological aspects of macroacyclic Cu(II) complexes derived from S-substituted dithiocarbazate schiff bases

“…Copper(II) complexes of thiosemicarbazone and dithiocarbazate ligands generally exhibit a S→Cu(II) charge-transfer band at ~400 nm. The presence of this LMCT band in the spectra of the metal complexes is strong evidence that the metal ion is coordinated to sulphur [43,52]. suggesting that complexation could be used as a means to protect the ligand from degradation that might occur in biological systems before free ligand could reach its target.…”

Structure, magnetic properties and nuclease activity of pyridine-2-carbaldehyde thiosemicarbazonecopper(II) complexes

“…In fact, there are few thiosemicarbazonecopper(II) complexes exhibiting extended 1D networks [74][75][76][77][78][79][80][81][82], while 2D and 3D structures are unknown for thiosemicarbazonecopper(II) systems. The crystal features of 4 are not contradictory with the studies reported for S-bridged systems, which were focused on monodentate or small-length multidentate coligands.…”