Syntheses, Crystal Structures and Properties of Two Coordination Polymers Based on Bisbenzimidazole

【摘要】 Two novel coordination polymers Bim（C=O）CuI]₂（1） and[Bim（C=O）CdCl₂]₂（2） based on the flexible ligand bis（1H-benzo[d]imidazol-2-yl）methane （Bim） were synthesized via volatilization method.They crystalize in monoclinic and triclinic crystal systems and adopt space group of P2₁/c and P1,respectively.The compounds were characterized by elemental analysis,infrared spectroscopy and powder X-ray diffraction analysis.Interestingly,methylene （-CH₂-） in Bim was oxidized to carbonyl （C=O）,which increases its extra-cyclic conjugation effect.For 1 and 2,their maximum emission wavelength of fluorescence around 440 and 475 nm indicates the potential as promising light-emissive materials.Meaningfully,Co²⁺ion shows a quenching effect on the fluorescence of compound 1.Besides,both compounds possess remarkable structure stability.更多还原

【Abstract】 Two novel coordination polymers Bim（C=O）CuI]₂（1） and[Bim（C=O）CdCl₂]₂（2） based on the flexible ligand bis（1H-benzo[d]imidazol-2-yl）methane （Bim） were synthesized via volatilization method.They crystalize in monoclinic and triclinic crystal systems and adopt space group of P2₁/c and P1,respectively.The compounds were characterized by elemental analysis,infrared spectroscopy and powder X-ray diffraction analysis.Interestingly,methylene （-CH₂-） in Bim was oxidized to carbonyl （C=O）,which increases its extra-cyclic conjugation effect.For 1 and 2,their maximum emission wavelength of fluorescence around 440 and 475 nm indicates the potential as promising light-emissive materials.Meaningfully,Co²⁺ion shows a quenching effect on the fluorescence of compound 1.Besides,both compounds possess remarkable structure stability.更多还原