Syntheses and characterization of novel lanthanide adamantine–dicarboxylate coordination complexes
摘要:
Hydrothermal reactions of 1,10-phenanthroline (phen), 1,3-adamantanedicarboxylic acid (H2L) and lanthanide chlorides yielded six compounds: [Ln(L)(HL)(phen)] (Ln = Pr, 1; Nd, 2), [Ln(L)(HL)(phen) (H2O)] (Sm, 3: Eu, 4), [Tb(L)(HL)(phen)(H2O)](2) center dot 2H(2)O (5), [Er-3(L)(4)(OH)(phen)](2) (6). Compounds 1-4 are structurally featured by one-dimensional polymeric chains; 5 hold binuclear structure constructed from eight-coordinated lanthanide center LnN(2)O(6) of distorted bicapped trigonal prism bridged by dicarboxylate ligands; 6 shows that erbium ions are in mono and bicapped trigonal prismatic geometries, respectively, which are further connected by mu(3)-OH to give rise to trinuclear structure. Thermogravimetric analyses of 1, 3 and 5 were performed. Fluorescent measurements of 4 and 5 were carried out, respectively. (C) 2008 Published by Elsevier Inc.
Syntheses and characterization of novel lanthanide adamantine–dicarboxylate coordination complexes
摘要:
Hydrothermal reactions of 1,10-phenanthroline (phen), 1,3-adamantanedicarboxylic acid (H2L) and lanthanide chlorides yielded six compounds: [Ln(L)(HL)(phen)] (Ln = Pr, 1; Nd, 2), [Ln(L)(HL)(phen) (H2O)] (Sm, 3: Eu, 4), [Tb(L)(HL)(phen)(H2O)](2) center dot 2H(2)O (5), [Er-3(L)(4)(OH)(phen)](2) (6). Compounds 1-4 are structurally featured by one-dimensional polymeric chains; 5 hold binuclear structure constructed from eight-coordinated lanthanide center LnN(2)O(6) of distorted bicapped trigonal prism bridged by dicarboxylate ligands; 6 shows that erbium ions are in mono and bicapped trigonal prismatic geometries, respectively, which are further connected by mu(3)-OH to give rise to trinuclear structure. Thermogravimetric analyses of 1, 3 and 5 were performed. Fluorescent measurements of 4 and 5 were carried out, respectively. (C) 2008 Published by Elsevier Inc.