
Acta Cryst. (2007). C63, m531-m533 [ doi:10.1107/S0108270107047403 ]
3-benzene-1,2-dicarboxylato)bis(
3-hydroxido)bis(
2-isonicotinato)dierbium(III) monohydrate] and the thulium analogueAbstract: 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
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
-
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
![]() ![]() Structure factor file (CIF format) (232.9 kbytes) | |
![]() ![]() Structure factor file (CIF format) (233.6 kbytes) | |
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