Jini, T. and Saban, K. V. and Varghese, G. and Naveen, S. and Sridhar, M. A. and Shashidhara Prasad, J. (2007) Growth, crystal structure and thermal properties of calcium bis(malate) dihydrate. Journal of Alloys and Compounds, 433 (1). 211 - 215. ISSN 1873-4669
Full text not available from this repository. (Request a copy)Abstract
A new coordination compound crystal of calcium with malic acid is prepared by gel aided solution growth. Single crystal X-ray diffraction studies revealed that the structural formula of the compound is Ca(C4H4O5)2·2H2O. It crystallizes in the monoclinic system with space group C2/c, Z=4, with unit cell parameters a=15.916(9)Å, b=5.886(3)Å, c=13.046(6)Å and β=90.678(4)°. Data were collected by oscillation method and full-matrix least squares refinement was applied to the model converging to final R indices R1=0.0416 and ωR2=0.1255. Compound forms a layer-type polymeric structure, stabilized by intermolecular hydrogen bonding. Ca2+ is eight-fold coordinated. Malate is coordinated to Ca2+ tridendate–bidendate through two carboxylates and monodendate through oxygen atom of the hydroxyl group. Thermal behavior investigated using TG and DTA studies is in conformity with the proposed structure.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Crystal growth, Crystal structure, X-ray diffraction, Thermal analysis |
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | C Swapna Library Assistant |
| Date Deposited: | 16 Sep 2019 09:49 |
| Last Modified: | 22 Nov 2022 09:28 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/8169 |
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