
TY  - JOUR
A1  - Chen, XM 
A1  - Wu, YL 
A1  - Yang, YS 
T1  - Preparation and Crystal Structures of Two Dimeric Lanthanoid(III) Complexes Containing Pyridinioacetate and 2,2'-Bipyridine Ligands:[Ln<sub>2</sub>( bpy )<sub>2</sub>( pybet )<sub>4</sub>(H<sub>2</sub>O)<sub>4</sub>] ( bpy )<sub>3</sub>(ClO<sub>4</sub>)<sub>6</sub>.H<sub>2</sub>O (Ln = Eu and Tb)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1995
VL  - 48
IS  - 9
SP  - 1643
EP  - 1649
KW  - 
UR  - https://doi.org/10.1071/CH9951643 
N2  - Two dimeric lanthanoid (III) complexes, [Ln2( bpy )2( pybet )4(H2O)4] ( bpy )3(ClO4)6.H2O ( bpy = 2,2&#8242;-bipyridine, pybet = pyridinioacetate, and Ln Eu and Tb), have been prepared and characterized by X-ray crystallography. The complexes are isostructural, each comprising a quadruply  carboxylato -bridged, centrosymmetrical dimeric cation, six perchlorate anions, three uncoordinated bpy molecules and a lattice water molecule. Each Ln ion is surrounded in a distorted square-antiprismatic environment by four carboxylato oxygen atoms, two nitrogen atoms of the bidentate bpy ligand and two aqua ligands . The Ln-O bond lengths range from 2.33 to 2.44 &#506;, and Ln-N bond lengths from 2.55 to 2.64 &#506;. The uncoordinated bpy molecules are linked to the aqua ligands by hydrogen bonds. 
ER  -

