title: Synthesis and characterisation of bis-cyclen based dinuclear lanthanide complexes.
abstract: The design and synthesis of several bis-macrocyclic cyclen (1,4,7,10-tetraazacyclododecane) ligands and their corresponding lanthanum or europium complexes is described; these dinuclear lanthanide systems were made by connecting two macrocyclic cyclen moieties through a rigid, covalent, p-xylylenediamide bridge or a flexible aliphatic hexane bridge. These ligands were subsequently functionalised with six acetamide pendant arms (CONR1R2: R1 = R2 = H or CH3, or R1 = H, R2 = CH3). The corresponding lanthanide bis-complexes were then formed by reaction with La(III) and Eu(III) triflates, yielding overall cationic (+VI charged) complexes.
authors.affiliation: School of Chemistry, Centre for Synthesis and Chemical Biology, Trinity College Dublin, Dublin 2, Ireland. gunnlaut@tcd.ie
authors.forename: Thorfinnur
authors.initials: T
authors.lastname: Gunnlaugsson
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Harte
mesh_terms: D000080027:Cyclams; D005063:Europium / Q000737:chemistry; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D028581:Lanthanoid Series Elements / Q000138:chemical synthesis* / Q000737:chemistry; D008024:Ligands; D047028:Macrocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure
chemical_list: D000080027:Cyclams; D006571:Heterocyclic Compounds; D028581:Lanthanoid Series Elements; D008024:Ligands; D047028:Macrocyclic Compounds; D005063:Europium; C038072:cyclen