Acta Crystallographica Section C

Crystal Structure Communications

Volume 63, Part 11 (November 2007)


metal-organic compounds



bg3054 scheme

Acta Cryst. (2007). C63, m531-m533    [ doi:10.1107/S0108270107047403 ]

Poly[aqua([mu]3-benzene-1,2-dicarboxylato)bis([mu]3-hydroxido)bis([mu]2-isonicotinato)dierbium(III) monohydrate] and the thulium analogue

G.-M. Wang, H.-L. Huang, H. Li and Q.-H. Zheng

Abstract: The two isomorphous lanthanide coordination polymers, {[Ln2(C6H4NO2)2(C8H4O4)(OH)2(H2O)]·H2O}n (Ln = Er and Tm), contain two crystallographically independent Ln ions which are both eight-coordinated by O atoms, but with quite different coordination environments. In both crystal structures, adjacent Ln atoms are bridged by [mu]3-OH groups and carboxylate groups of isonicotinate and benzene-1,2-dicarboxylate ligands, forming infinite chains in which the Er...Er and Tm...Tm distances are in the ranges 3.622 (3)-3.894 (4) and 3.599 (7)-3.873 (1) Å, respectively. Adjacent chains are further connected through hydrogen bonds and [pi]-[pi] interactions into a three-dimensional supramolecular framework.

Formula: [Er2(C6H4NO2)2(C8H4O4)(OH)2(H2O)]·H2O and [Tm2(C6H4NO2)2(C8H4O4)(OH)2(H2O)]·H2O


hkldisplay filedownload file

Structure factor file (CIF format) (232.9 kbytes)
[ doi:10.1107/S0108270107047403/bg3054Isup2.hkl ]
Contains datablock I


hkldisplay filedownload file

Structure factor file (CIF format) (233.6 kbytes)
[ doi:10.1107/S0108270107047403/bg3054IIsup3.hkl ]
Contains datablock II


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