Price, D., Powell, A. and Wood, P. (2000) Hydrothermal synthesis, structure, stability and magnetism of Na2Co2(C2O4)3(H2O)2 : a new metal oxalate ladder. Journal of the Chemical Society: Dalton Transactions, 20, pp. 3566-3569. (doi: 10.1039/B005494L)
Full text not currently available from Enlighten.
Abstract
Purple crystals of the compound Na<sub>2</sub>Co<sub>2</sub>(C<sub>2</sub>O<sub>4</sub>)<sub>3</sub>(H<sub>2</sub>O)<sub>2</sub>1 were synthesized in high yielding hydrothermal reactions. The room temperature crystal structure reveals an anionic cobalt oxalate network with a 2-leg ladder topology. The ladder frameworks run parallel to the a axis and are held together by both hydrogen bonding and electrostatic interactions. The magnetism of 1 was studied as a function of temperature and field. The susceptibility shows a broad maximum at about 21 K which is associated with short-range correlations, and a phase transition to a long range ordered Néel state at about 9 K. Above T<sub>N</sub> the data are fitted by a range of models which suggests the intra-ladder couplings are of the order −4 to −5 cm<sup>−1</sup> and the inter-ladder coupling is approximately 0.2 cm<sup>−1</sup>. Themogravimetric analysis shows 1 to be stable up to 350 °C, where water of crystallisation is lost. A second decomposition episode is seen at 400 °C.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Price, Dr Daniel |
| Authors: | Price, D., Powell, A., and Wood, P. |
| Subjects: | Q Science > QD Chemistry |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Journal of the Chemical Society: Dalton Transactions |
| Journal Abbr.: | J. Chem. Soc., Dalton Trans. |
| ISSN: | 0300-9246 |
| Published Online: | 19 September 2000 |
University Staff: Request a correction | Enlighten Editors: Update this record
Deposit and Record Details
Deposit and Record Details