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- Title
Crystal structure of calcium cis(N)- bis(iminodiacetato)chromate(III) nonahydrate Ca[Cr(Ida)<sub>2</sub>]<sub>2</sub>·9H<sub>2</sub>O.
- Authors
Zabel, M.; Pavlovskii, V. I.; Poznyak, A. L.
- Abstract
In the crystals of [Ca(H2O)5][Cr(Ida)2]2·4H2O (triclinic symmetry, a = 10.1056(10) Å, b = 13.0077(11) Å, c = 13.1185(13) Å, α = 70.186(11)°, β = 81.248(11)°, γ = 78.996(11)°, Z = 2, space group P $$ \bar 1 $$) cyclic centrosymmetric tetramers are present. In them calcium ions are bonded to oxygen atoms of the carboxyl groups of two octahedral complex cis(N)-[Cr(Ida)2]− ions (Ida is the iminodiacetic acid anion). The O atoms of five water molecules complete the Ca atom environment to a distorted pentagonal bipyramid. Isolated [Cr(Ida)2]− ions of a similar structure neutralize the positive charge of tetramers.
- Subjects
CRYSTALS; ATOMIC structure; ELECTRONS; ATOMS; CALCIUM ions
- Publication
Journal of Structural Chemistry, 2009, Vol 50, Issue 3, p582
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1007/s10947-009-0090-3