Solvothermal synthesis, structure and photoluminescent properties of europium complex based on fluorene derivatives

A novel coordination polymer, {[Eu2(L)3(CH3OH)(H2O)]·(CH3OH)(H2O)}n (1), has been synthesized by solvothermal reaction of Eu(NO3)3·6H2O and 9,9-diethylfluorene-2,7-dicarboxylic acid in a mixture solution of CH3OH and H2O. Single crystal X-ray structural analysis reveals that complex crystallizes in an orthorhombic, space group P2(1)2(1)2(1), holding the unusual (2,3,8)-connected 3D topological network. Thermogravimetric analysis shows remarkable thermal stability of the structural framework of compound , the photoluminescence properties are also discussed.