[BDTA]2[Cu(mnt)2]: an almost perfect one-dimensional magnetic material.
[BDTA]2[Cu(mnt)2] (BDTA = benzo-1,3,2-dithiazolyl, mnt = maleonitriledithiolate) was crystallized in the space group P with an inversion center on Cu giving a stacked structure with each metal complex anion sandwiched by two cations. Short intermolecular S...S contacts give rise to a one-dimensional chain lateral to the stacking axis. Variable-temperature magnetic susceptibility and EPR measurements indicate that the salt behaves as an ideal one-dimensional Heisenberg antiferromagnetic material from 2 K < or = T < or = 300 K, with a coupling constant of J/k(B) = 16-17 K; the very low temperature magnetic properties are in quantitative agreement with the predictions of quantum field theory. DFT calculations are consistent with the formation of a one-dimensional magnetic chain with interstack interactions mediated by the BDTA counterions.
Staniland
Sarah S
SS
School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, UK.
Fujita
Wataru
W
Umezono
Yoshikatsu
Y
Awaga
Kunio
K
Camp
Philip J
PJ
Clark
Stewart J
SJ
Robertson
Neil
N