Premium
Crystal structure and magnetic properties of the layered hybrid organic–inorganic compounds M 2 (OH) 2 (C 14 H 8 O 4 ) ( M = Mn, Fe)
Author(s) -
Sibille Romain,
Mazet Thomas,
Diop Leopold V. B.,
François Michel
Publication year - 2021
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s2052520621007988
Subject(s) - benzene , crystallography , crystal structure , polyoxometalate , molecule , chemistry , biphenyl , materials science , stereochemistry , inorganic chemistry , catalysis , organic chemistry
The structure of M 2 (OH) 2 (bpdc) (bpdc = biphenyl dicarboxylate, C 14 H 8 O 4 ) is distinct from that of the isoreticular compounds M 2 (OH) 2 (bdc) (bdc = benzene dicarboxylate, C 8 H 4 O 4 ) ( M = Mn, Fe), in the sense that no disorder of the bpdc molecules from one layer to the other needs to be considered. The global symmetry is lower in the bpdc compounds ( P 1 ) than in the bdc compounds ( C 2/ m ). Both Mn 2 (OH) 2 (bpdc) and Fe 2 (OH) 2 (bpdc) order magnetically at 36.8 and 46.5 K, respectively, and can be considered as uncompensated antiferromagnets, whereas Mn 2 (OH) 2 (bdc) (Néel temperature T N = 38.5 K) and Fe 2 (OH) 2 (bdc) ( T N = 66 K) are compensated antiferromagnets.