TY - JOUR
T1 - Comprehensively understanding the natures of crystal structure and magnetic behavior of a radical salt with regular mixed anion-cation stacks
AU - Pan, Xue Wei
AU - Shao, Dong Sheng
AU - Yao, Wan Wan
AU - Ren, Xiao Ming
N1 - Publisher Copyright:
© 2021
PY - 2022/3
Y1 - 2022/3
N2 - In this study, the ionic crystals of [TTF][Au(mnt)2] (1; mnt2− = maleonitriledithiolate) have been grown using solvent diffusion method, and characterized by microanalysis, IR and Raman spectra, TG and powder X-ray diffraction (PXRD) techniques. Crystal of 1 belongs to triclinic space P−1 with Z = 1 and both planar TTF+ and [Au(mnt)2]− locate at an inversion center, respectively. Cation (C) and anion (A) form uniform … CACA … mixed stack along [1 0 0] direction, and the charge-assisted H-bonds form between neighboring mixed stacks. 1 features an S = ½ Heisenberg uniform antiferromagnetic (AFM) chain with J/kB = −2.08(1) K with g = 2.0085 fixed, and absent spin-Peierls transition above 1.9 K, however, with long-range AFM ordering below 1.9 K. Additionally, 1 displays different style of mixed stack from [TTF][M(mnt)2] (M = Pd or Pt; … C2A2C2A2 … manner mixed stack) owing to strong AFM couplings (−J/kB > 1000 K) in a [M(mnt)2]22− dimer.
AB - In this study, the ionic crystals of [TTF][Au(mnt)2] (1; mnt2− = maleonitriledithiolate) have been grown using solvent diffusion method, and characterized by microanalysis, IR and Raman spectra, TG and powder X-ray diffraction (PXRD) techniques. Crystal of 1 belongs to triclinic space P−1 with Z = 1 and both planar TTF+ and [Au(mnt)2]− locate at an inversion center, respectively. Cation (C) and anion (A) form uniform … CACA … mixed stack along [1 0 0] direction, and the charge-assisted H-bonds form between neighboring mixed stacks. 1 features an S = ½ Heisenberg uniform antiferromagnetic (AFM) chain with J/kB = −2.08(1) K with g = 2.0085 fixed, and absent spin-Peierls transition above 1.9 K, however, with long-range AFM ordering below 1.9 K. Additionally, 1 displays different style of mixed stack from [TTF][M(mnt)2] (M = Pd or Pt; … C2A2C2A2 … manner mixed stack) owing to strong AFM couplings (−J/kB > 1000 K) in a [M(mnt)2]22− dimer.
KW - Long-range AFM ordering
KW - Metal-bis-(dithiolene)
KW - Mixed stack
KW - Radical salt
KW - Spin-Peierls transition
KW - Uniform magnetic chain
UR - http://www.scopus.com/inward/record.url?scp=85121102090&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2021.122822
DO - 10.1016/j.jssc.2021.122822
M3 - 文章
AN - SCOPUS:85121102090
SN - 0022-4596
VL - 307
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
M1 - 122822
ER -