The title complex, {[Cd2(1,8-nap)2(H2Oh](bpp)2}n (1), a cadmium complex based on mixed naphthalene-1,8-dicarboxylate (1,8-nap) and flexible 1,3-bi (4-pyridyl)propane (bpp) ligands, has been hydrothermally synthes-ized. It consists of a one-dimensional chain along c axis, which is derived from dimeric unit [[Cd2(1,8-nap)2(H2O)2]linked by a pair of bpp ligands. In every {[Cd2(1,8-nap)2(H2O)2]dimeric unit, two 1,8-nap act as bridging ligands toconnect two Cd (Ⅱ) atoms, forming a sixteen-membered ring. Each Cd (Ⅱ) atom is in a distorted octahedralenvironment, coordinated by one aqua, two 1,8-nap and two bridging bpp ligands. In addition, two bridging bppligands connected two neighboring Cd (Ⅱ) atoms form a twenty-four-membered ring. The TGA and Luminescenceproperty in solid state of complex 1 have been further studied and discussed in this paper.
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