Synthesis, Crystal Structure, and Luminescent Properties of a Helical Complex [(CuL)2.5(H2O)0.375] (H2L = Benzil Bis[(5-bromo oxidobenzylidene)hydrazone])
摘要:
A new helical copper (II) complex [(CuL)(2.5)(H2O)(0.375)] 1 (H2L = benzil bis[(5-bromo oxidobenzylidene)hydrazone]) was synthesized and characterized by elemental analysis, IR spectra, UV-vis spectra, and single-crystal X-ray diffraction. Complex 1 exhibits a new single-stranded helix with the copper (II) atom having a four-coordination seesaw geometry. The cooperativity of intermolecular C-H center dot center dot center dot pi interactions and C-H center dot center dot center dot O hydrogen bonds links the helices together to form a three-dimensional network structure. The thermogravimetric and luminescent properties in the solid state of complex 1 have been investigated.