The crystal structure of calcium aqua{l_brace}ethylenediaminetetraacetato(3-){r_brace}nickelate(II) tetrahydrate, Ca[Ni(HEdta)(H{sub 2}O)]{sub 2}.4H{sub 2}O
- Russian Academy of Sciences, Kurnakov Institute of General and Inorganic Chemistry (Russian Federation)
- National Academy of Sciences of Belarus, Institute of Molecular and Atomic Physics (Belarus)
The crystal structure of Ca[Ni(HEdta)(H{sub 2}O)]{sub 2} . 4H{sub 2}O (HEdta{sup 3-}is a protonated anion of ethylenediaminetetraacetic acid) is determined. The unit-cell parameters are as follows: a = 7.706(1), b = 14.923(9), and c = 26.570(5) A; V = 3055.6(2.4) A{sup 3}; Z = 8; and space group Pbcn. Crystals are shaped as tetragonal prisms and colored green, which is not characteristic of this class of compounds. The structure is built of Ca{sup 2+} cations, octahedral [Ni(HEdta)(H{sub 2}O)]{sup -} complex anions, and crystallization water molecules. In the complex anion, one of the acetate branches is free of coordination, whereas the remaining three branches coordinate the central atom forming glycinate metallocycles. The structure is based on sandwich layers, which are formed by networks of flat tetragonal Ca[Ni(HEdta)(H{sub 2}O)]{sub 4}(H{sub 2}O){sub 2} fragments adjoining one another by vertices.
- OSTI ID:
- 22051245
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 1 Vol. 55; ISSN 1063-7745; ISSN CYSTE3
- Country of Publication:
- United States
- Language:
- English
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