Urothermal synthesis of two photoluminescent cadmium coordination polymers

Abstract: Two new Cd coordination polymers, [Cd(5-Nisp)(e-urea)]n (1), and [Cd2(5-Hisp)2(e-urea)2(en)]n (2), (where 5-Nisp=5-nitroisophthalate; 5-Hisp=5-hydroxyisophthalate; e-urea=ethyleneurea; en=1,2-ethanediamine), have been urothermally synthesized by using ethyleneurea hemihydrate as the solvent. Single-crystal X-ray diffraction analyses reveal that both 1 and 2 have linear chain sub-structures linked by 5-Nisp ligands or 5-Hisp ligands into three-dimensional frameworks. The thermogravimetric behavior and the photoluminescent properties of 1 and 2 were studied. [Copyright &y& Elsevier]