Abstract
For the purpose of broadening the understanding of the sulfonic acid coordination mechanism, a coordination system consisting of Eu(III) ion and 1,3,6,8-pyrene tetra-sulfonate (1,3,6,8-PTS) ligand was chosen as the typical research object. By step regulating the volume ratio of mixed solvents and the molar ratio of metal salts to ligands, two pyrene tetra-sulfonate europium coordination polymers, Eu6(μ6-O)(μ3-OH)8(NO3)6(1,3,6,8-H2PTS)(H2O)10 (1) and Eu(NO3)(1,3,6,8-PTS)0.5(H2O)3·0.5bipy (2), were obtained in sequence. Compound 1 shows a 1D chain-like structure interconnected with 1,3,6,8-PTS bridging ligands and rare [Eu6(μ6-O)(μ3-OH)8(NO3)6]2+ cluster nodes, while compound 2 shows a 2D layered structure. Further structural comparison with compound Eu(1,3,6,8-PTS)(H2O)7·4H2O·Hbipy (EuPTSbp-1) was discussed in detail and the structure formation mechanism was analyzed. On this basis, a sequential modulation strategy for pyrene tetra-sulfonate europium coordination polymers was proposed.
Funder
Fundamental Research Funds for the Central Universities
Frontiers Science Center for Critical Earth Material Cycling of Nanjing University
Research Funds for Jiangsu Distinguished Professor
National Natural Science Foundation of China
Jiangsu Province Outstanding Youth Fund
Double first class Fund, China Pharmaceutical University
Project Program of Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University
Natural Science Foundation of the Jiangsu Higher Education Institutions of China
Research Foundation of NJUIT
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering