Dinuclear Eu(III), Gd(III), and Tb(III) Complexes of meso-1,2-Bis(ethylsulfinyl)ethane with 2,2′:62,2′′-Terpyridine as Co-ligand

Article

<< Previous

Next >>

Contents Vol 59(5)

doi:10.1071/CH06071

Dinuclear Eu(iii), Gd(iii), and Tb(iii) Complexes of meso-1,2-Bis(ethylsulfinyl)ethane with 2,2′:6′,2′′-Terpyridine as Co-ligand

Jian-Rong Li ^A, Ruo-Hua Zhang ^A, Xian-He Bu ^A ^B

^A Department of Chemistry, Nankai University, Tianjin 300071, China.
^B Corresponding author. Email: buxh@nankai.edu.cn





	PDF (292 KB) $25



	Export Citation

Print

Australian Journal of Chemistry 59(5) 315–319 http://dx.doi.org/10.1071/CH06071
Submitted: 5 March 2006 Accepted: 27 April 2006 Published online: 13 June 2006

Abstract

Three dinuclear lanthanide complexes of flexible disulfoxide ligand meso-1,2-bis(ethylsulfinyl)ethane (L), [Ln₂(L)₂(μ-L)(tpy)₄](ClO₄)₆(CHCl₃)₄ (Ln = Eu 1, Gd 2) and [Tb₂(L)₄(μ-L)(tpy)₂](ClO₄)₆(CHCl₃) 3 with 2,2′:6′,2′′-terpyridine (tpy) as co-ligand were synthesized and structurally characterized. In 1 and 2, the metal centre is nine-coordinated to two tpy and one-and-a-half L ligands, whereas in 3 it coordinates with one tpy and two-and-a-half L, which may be attributed to the influence of the lanthanide contraction. In such complexes the disulfoxide ligands perform two kinds of coordination modes, bridging and chelating, indicating their flexibility in the formation of such complexes.