A trivalent cobalt complex with the new redox-active ligand 10-(8-quinolylazo)-9-phenanthrol (qapl)

Synthesis and crystal structures of (E)-N'-(4-chloro-3-nitro-benzyl-idene)acetohydrazide and (E)-2-(4-chloro-benzyl-idene)-1-(quinolin-8-yl)hydrazine

The syntheses of two benzyl-idenehydrazine derivatives, namely, (E)-N'-(4-chloro-3-nitro-benzyl-idene)acetohydrazide, C9H8ClN3O3, and (E)-2-(4-chloro-benzyl-idene)-1-(quinolin-8-yl)hydrazine, C16H12ClN3, are reported. The mol-ecules have been characterized using IR, 1H NMR, 13C NMR and mass spectro-scopic and elemental analysis techniques, and their structures have been determined by single-crystal X-ray diffraction.

Synthesis, crystal structure and photophysical properties of chlorido-[(E)-3-hy-droxy-2-methyl-6-(quinolin-8-yldiazen-yl)phenolato]copper(II) monohydrate

The reaction between copper(II) chloride dihydrate and the (E)-2-methyl-4-(quinolin-8-yldiazen-yl)benzene-1,3-diol ligand in aceto-nitrile leads to the formation of the title compound, [Cu(C16H12N3O2)Cl]·H2O. The ligand is deprotonated and coordinates with three donor atoms (tridentate) to the CuII ion. Individual mol-ecules of the CuII complex are connected by chloride bridges, forming a one-dimensional coordination polymer. No photoisomerization to the cis isomer of the azo ligand was observed upon irradiation with UV light.