Syntheses, characterization and glass-forming properties of new bis[5-((4-ndodecyloxyphenyl)azo)-N-(4-nalkoxyphenyl)-salicylaldiminato]nickel (II) complex homologues

A homologue series of bis[5-((4-dodecyloxyphenyl)azo)-N-(4-alkoxyphenyl)-salicylaldiminato)]nickel (II) complexes has been synthesized and characterized by NMR, elemental analyses and IR spectroscopy. DSC, X-ray powder diffraction and optical polarizing microscopy studies indicated that the Ni complexes have a resistance to crystallization and give an amorphous glassy state, but after annealing at room temperature for several days transform to an anisotropic glass.