Low-temperature phase transition in crystals of an optically active lanthanide complex
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 77 (4) , 557-566
- https://doi.org/10.1039/f29817700557
Abstract
A second-order crystalline phase transition occurs between 120 and 5 K in trisodium lanthanide tris(oxydiacetate) di(sodium perchlorate) hexahydrate single crystals, Na3Ln(C4H4O5)3·2NaClO4·6H2O. Results from optical, circular dichroism and electron paramagnetic resonance spectroscopy are used to define the low-temperature space group. The transition is from the room-temperature space group R32 to P3121 or its mirror image P3221. It lowers the site symmetry of the lanthanide from D3 to C2 and results in movement of a sodium ion off a three-fold axis.Keywords
This publication has 0 references indexed in Scilit: