Two Novel Self-Assembly CdII Coordination Polymers: Single-or Double 1D Chain Controlled by Ratio Change in Solvent and Their Photoluminescence Property

Two novel coordination polymers of [Cd(NIPH)(imH)2H2O]n·nH2O (1) and [Cd(NIPH)(imH)(CH3CH2O)]n (2) (H2NIPH = 5-nitroisophthalic, imH = 1H-imidazole) were successfully synthesized by controlling the ratio of reaction solvents and characterized by element analysis, FT-IR, TG analysis, single crystal X-ray diffraction. Complex 1 exhibits a zigzag-like chain pattern containing mononuclear cadmium building blocks, while complex 2 shows a ladder-like double chain pattern with binuclear cadmium building blocks. Both of the two complexes show high thermal stability. In addition, the photoluminescence properties of the two complexes have been studied in this work.