Crystal structure of poly[[hexaaquatris(μ-3,6-dioxocyclohexa-1,4-diene-1,4-diolato)dierbium(III)] octadecahydrate]

The title lanthanide complex, [Er 2 (C 6 H 2 O 4 ) 3 (H 2 O) 6 ]·18H 2 O, is isostructural with its La, Gd, Yb and Lu analogues. The Er 3+ ion, located on a threefold rotation axis, is nine-coordinated in a distorted tricapped trigonal–prismatic geometry, which is completed by six oxygen atoms from...

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Published inActa crystallographica. Section E, Crystallographic communications Vol. 75; no. 1; pp. 64 - 67
Main Authors Ponjan, Nutcha, Kodchasanthong, Kenika, Jiajaroen, Suwadee, Chainok, Kittipong
Format Journal Article
LanguageEnglish
Published International Union of Crystallography 01.01.2019
Subjects
coordination polymers
crystal structure
dioxybenzoquinone
erbium(III)
lanthanide
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Summary:The title lanthanide complex, [Er 2 (C 6 H 2 O 4 ) 3 (H 2 O) 6 ]·18H 2 O, is isostructural with its La, Gd, Yb and Lu analogues. The Er 3+ ion, located on a threefold rotation axis, is nine-coordinated in a distorted tricapped trigonal–prismatic geometry, which is completed by six oxygen atoms from three dhbq 2− ligands and three oxygen atoms from coordinated water molecules. Each dhbq 2− ligand acts in a μ 2 -bis(bidentate) bridging mode to connect two Er 3+ ions to form honeycomb (6,3) two-dimensional sheets extending in the ab plane, having an Er...Er separation of 8.7261 (2) Å. In the crystal, extensive O—H...O hydrogen-bonding interactions involving the coordinated water molecules and the water molecules of crystallization, as well as the oxygen atoms of the dhbq 2− ligands, generate an overall three-dimensional supramolecular network.
ISSN:2056-9890
2056-9890
DOI:10.1107/S2056989018017516