TY - JOUR
T1 - Syntheses, crystal structures, and magnetic properties for two spin-ladder complexes based on bis(2-thioxo-1,3-dithiole-4,5-dithiolato)nickelate monoanion building block
AU - Zhang, H.
AU - Cai, B.
AU - Duan, H. B.
AU - Yuan, G. J.
AU - Xuan, F.
AU - Ren, X. M.
PY - 2013/1
Y1 - 2013/1
N2 - Two isostructural complexes based on bis(2-thioxo-1,3-dithiole-4,5- dithiolato)nickelate monoanion ([Ni(Dmit)2]-) building block, (C19H11NNiF3S10 (I) and C18H10N2F3NiS10 (II)), have been synthesized and characterized structurally and magnetically. Two complexes crystallize in monoclinic space group P1 with very similar cell parameters and packing structures. The planar [Ni(Dmit)2]- monoanions form face-to-face π-type dimer, and the neighboring dimers are aligned into a ladder-type arrangement via lateral-to-lateral S.S contacts along x axis in the crystals of I and II. Two complexes exhibit similar magnetic behaviors, and their magnetic susceptibility data can be fitted to a Heisenberg antiferromagnetic two-legged spin ladder formula in high-temperature region and reproduced well by the Troyer expression in low-temperature region. The spin-gap values, obtained, respectively, from the fits of magnetic susceptibility data in high- and low-temperature regions, are closed to each other, indicating the chose magnetic exchange model and the results of fits are reasonable.
AB - Two isostructural complexes based on bis(2-thioxo-1,3-dithiole-4,5- dithiolato)nickelate monoanion ([Ni(Dmit)2]-) building block, (C19H11NNiF3S10 (I) and C18H10N2F3NiS10 (II)), have been synthesized and characterized structurally and magnetically. Two complexes crystallize in monoclinic space group P1 with very similar cell parameters and packing structures. The planar [Ni(Dmit)2]- monoanions form face-to-face π-type dimer, and the neighboring dimers are aligned into a ladder-type arrangement via lateral-to-lateral S.S contacts along x axis in the crystals of I and II. Two complexes exhibit similar magnetic behaviors, and their magnetic susceptibility data can be fitted to a Heisenberg antiferromagnetic two-legged spin ladder formula in high-temperature region and reproduced well by the Troyer expression in low-temperature region. The spin-gap values, obtained, respectively, from the fits of magnetic susceptibility data in high- and low-temperature regions, are closed to each other, indicating the chose magnetic exchange model and the results of fits are reasonable.
UR - http://www.scopus.com/inward/record.url?scp=84871809558&partnerID=8YFLogxK
U2 - 10.1134/S1070328412120068
DO - 10.1134/S1070328412120068
M3 - 文章
AN - SCOPUS:84871809558
SN - 1070-3284
VL - 39
SP - 147
EP - 155
JO - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
JF - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
IS - 1
ER -