title: Group I cation templated formation of luminescent mono- and bis-substituted thionaphthol heterobimetallic complexes of Pr, Nd, Eu and Tb.
abstract: Metathesis of lanthanide tris di-tert-butyl beta-diketonates ([Ln(thd)3] Ln=Pr, Nd, Eu, Tb) with one or two equivalents of group 1 salts of the sulfur bridged binaphtholate dianion [1,1'-S(2-OC10H4But(2)-3,6)2]2-, [M2L], M=K, Li affords luminescent mono- and bis-ligand substituted complexes ML[LnL(thd)2].L; M=K, Ln=Pr , Nd , Eu and Tb (L=thf, diethyl ether or toluene) and M(thf)2[LnL2(thd)]; M=Li, Ln=Pr , Nd , Eu , Tb . The potassium salt [K2L] affords mono-L substituted complexes most cleanly, while the lithium salt [Li2L] yields the bis-L substituted complexes most cleanly. The L ligands function as antenna for the sensitised lanthanide-centred emission in Eu3+ and Tb3+ complexes. The X-ray single-crystal structures of mono- and bis-L lanthanide complexes of Nd3+ are presented.
authors.affiliation: School of Chemistry, The University of Nottingham, University Park, Nottingham, UK NG7 2RD.
authors.forename: Louise S
authors.initials: LS
authors.lastname: Natrajan
authors.forename: Alexander J
authors.initials: AJ
authors.lastname: Blake
authors.forename: Claire
authors.initials: C
authors.lastname: Wilson
authors.forename: Julia A
authors.initials: JA
authors.lastname: Weinstein
authors.forename: Polly L
authors.initials: PL
authors.lastname: Arnold