Crystal Structure of Zinc(II) Hydrated Trinuclear Complex with Monoprotonated Ethylenediaminetetraacetate Anion(3{sup -}), [Zn{sub 3}(HEdta){sub 2}(H{sub 2}O){sub 6}]
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991 (Russian Federation)
- Institute of Molecular and Atomic Physics, Belarussian Academy of Sciences, pr. F. Skoriny 70, Minsk, 220072 (Belarus)
The crystal structure of the [Zn{sub 3}(HEdta){sub 2}(H{sub 2}O){sub 6}] complex (I) is determined by X-ray diffraction analysis. The crystals are orthorhombic, a = 14.780 A, b = 29.699 A, c = 7.032 A, Z = 4, and space group Pna2{sub 1}. The structural units of crystals I are trinuclear linear molecules, in which the peripheral atoms Zn(1) and Zn(2) each coordinate two N atoms and three O atoms of the HEdta{sup 3-} ligand and the O(w) atom of the H{sub 2}O molecule, whereas the central Zn(3) atom coordinates four O(w) atoms of the H{sub 2}O molecules and two terminal O atoms of the two HEdta{sup 3-} ligands. The HEdta{sup 3-} ligand fulfills a hexadentate chelating-bridging function. The bond lengths are as follows: Zn-O(HEdta), 2.006(4)-2.123(4) A; Zn-N, 2.214(6) and 2.128(5) A; and Zn-O(w), 2.006(6)-2.225(5) A. In structure I, there is a specific contact formed by hydrogen bonds, owing to which the distance between the central atoms of individual molecules appears to be shorter than that in covalently bonded complexes.
- OSTI ID:
- 20666227
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 6 Vol. 49; ISSN 1063-7745; ISSN CYSTE3
- Country of Publication:
- United States
- Language:
- English
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