Synthesis, spectral and single crystal X-ray diffraction studies on Mn(II), Ni(II), Cu(II) and Zn(II) complexes with 2-hydroxy-benzoic acid (phenyl-pyridin-2-yl-methylene)-hydrazide

Crystal structure of bis(3-methoxy-N-(1-(pyridin-2-yl)ethylidene)benzohydrazonato κ3 O,N,N′)zinc(II), C30H28N6O4Zn

C30H28N6O4Zn, orthorhombic, Aba2 (no. 41), a = 12.040(9) Å, b = 22.596(18) Å, c = 10.344(10) Å, V = 2814(4) Å3, Z = 4, R gt(F) = 0.0463, wR ref(F 2) = 0.1435, T = 296(2) K.

Naphthoylhydrazones: coordination to metal ions and biological screening

V^IVO, Cu^II and Zn^II complexes from three new naphthoylhydrazones were screened towards their ability to bind albumin and their cytotoxicity.

Varying structural motifs, unusual X-band electron paramagnetic spectra, DFT studies and superoxide dismutase enzymatic activity of copper(ii) complexes with N′-[(E)-phenyl(pyridin-2-yl)methylidene]benzohydrazide

A diverse set of new copper(ii) complexes synthesized as possible models for antioxidant superoxide dismutase mimics.

Synthesis, characterization and anticancer activities of transition metal complexes with a nicotinohydrazone ligand

The reaction of divalent transition metal salts and (E)-N'-(1-(pyridin-2-yl)ethylidene)nicotinohydrazide (penh) led to the formation of [Mn(penh)₂] (complex 1), [Co(penh)₂] (complex 2), [Cu(penh)₂] (complex 3) and [Cd (penh)₂] (complex 4) complexes. The four complexes were characterized using elemental analyses, infrared spectra and single-crystal X-ray diffraction analyses. Subsequently, the complexes were used for in vitro cell level experiments to determine potential antitumor effects. The results demonstrated that the complexes exhibited a similar structure; however, they were crystallized with distinct space groups. In comparison with the uncomplexed penh ligand, all four complexes were able to markedly decrease the proliferation rate of various types of tumor cell, including the human lung cancer cell line A549, human gastric cancer cell line BGC823 and human esophageal cancer cell line Eca109, in a concentration-dependent manner. Furthermore, the complexes promoted tumor cell apoptosis, as demonstrated in the apoptosis assay, and this was confirmed using electrophoresis.

Unprecedented tetranuclear complexes with “weighing balance shaped” topology: single crystal structures, unusual EPR spectra, magnetic properties and antioxidant activity

Two new copper(ii) complexes have been synthesized and characterized by single crystal X-ray diffraction.

Exploiting the potential of aryl acetamide derived Zn(ii) complexes in medicinal chemistry: synthesis, structural analysis, assessment of biological profile and molecular docking studies

This study reports an unprecedented series of aryl acetamide derived Zn(ii) complexes as frontline enzyme inhibitors as well as anticancer and anti-parasitic agents.

A binuclear Cu(i) complex as a novel catalyst towards the direct synthesis of N-2-aryl-substituted-1,2,3-triazoles from chalcones

A binuclear Cu(i)-complex with N′,N′-bis{(1H-indol-3-yl)methylene}oxalohydrazide is synthesized and characterized. The complex has been employed as a catalyst for one-pot operation involving the azide–chalcone click reaction and subsequent arylation.

3d transition metal complexes with a julolidine–quinoline based ligand: structures, spectroscopy and optical properties

Five new complexes of a julolidine–quinoline based ligand with 3d transition metals have been synthesised and structurally characterised.

Syntheses, crystal structures and antimicrobial activities of Cu(ii), Ru(ii), and Pt(ii) compounds with an anthracene-containing tripodal ligand

Three new Cu(ii), Ru(ii), and Pt(ii) compounds of an anthracene-containing tripodal ligand were synthesized. Their crystal structures was determined by a single-crystal X-ray diffraction method and their antimicrobial activities were investigated.

Synthesis, structural investigations and corrosion inhibition studies on Mn(ii), Co(ii), Ni(ii), Cu(ii) and Zn(ii) complexes with 2-amino-benzoic acid (phenyl-pyridin-2-yl-methylene)-hydrazide

Metal complexes of 2-amino-benzoic acid (phenyl-pyridin-2-yl-methylene)-hydrazide are synthesized and the structures are determined by X-ray crystallography. These compounds show appreciable corrosion inhibition efficiency for mild steel in 1 M HCl.