Abstract
The crystal structure of NMn consists of linear chains of face-sharing Mn octahedra which are hydrogen bonded together by the dimethylammonium ions. The Mn-Cl distances range from 2.514 to 2.582 Å and the bridging Mn-Cl-Mn angles from 77.19° to 79.68°. The compound is monoclinic, , with Å, Å, Å, and . The magnetic susceptibility shows a broad maximum near 60°K, typical of a one-dimensional antiferromagnet. A fit of the data to a mean-field-corrected Fisher model gives an intrachain exchange coupling of -6.9°K and an interchain coupling of -0.5°K.
- Received 26 August 1975
DOI:https://doi.org/10.1103/PhysRevB.13.3956
©1976 American Physical Society