TY - JOUR
T1 - Synthesis, Structure, and Magnetic Characterization of a Series of Iron(II) Coordination Frameworks with 2, 6-Bis(1, 2,4-triazole-4-yl)pyridine
AU - Liu, Yue
AU - Huo, Jian Zhong
AU - Liu, Yuan Yuan
AU - Su, Xiumei
AU - Guo, Jian Hua
AU - Ding, Bin
AU - Wang, Xiu Guang
AU - Xia, Jun
N1 - Publisher Copyright:
© 2015 Wiley-VCH Verlag GmbH andCo. KGaA, Weinheim.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - Based on the bis-triazole ligand 2, 6-bis(1, 2,4-triazole-4-yl)pyridine (L), the triazole-iron(II) complexes [Fe(L)2(dca)2(H2O)2]·2H2O (1) (Nadca = sodium dicyanamide), {[Fe(μ2-L)2(H2O)2]Cl2}n (2), and {[Fe(μ2-L)2(H2O)2](ClO4)2·L·H2O}n (3) were isolated by solvent diffusion methods. When iron(II) salts and Nadca were used, compound 1 was isolated, which contains mononuclear Fe(L)2(dca)2(H2O)2 units. When FeCl2 or FeClO4 were used, one-dimensional (1D) cation iron(II) chains (2) and two-dimensional (2D) cation iron(II) networks (3) were isolated indicating anion directing structural diversity. Moreover, variable-temperature magnetic susceptibility data of 1-3 were recorded in the temperature range 2-300 K. The magnetic curve of complex 2 was fitted by using the classical spin Heisenberg chain model indicating anti-ferromagnetic interactions (J = -5.31 cm-1). Obviously complexes 1-3 show no detectable thermal spin crossover behaviors, the lack of spin-crossover behavior may be correlated with FeN4O2 coordination spheres in 1-3.
AB - Based on the bis-triazole ligand 2, 6-bis(1, 2,4-triazole-4-yl)pyridine (L), the triazole-iron(II) complexes [Fe(L)2(dca)2(H2O)2]·2H2O (1) (Nadca = sodium dicyanamide), {[Fe(μ2-L)2(H2O)2]Cl2}n (2), and {[Fe(μ2-L)2(H2O)2](ClO4)2·L·H2O}n (3) were isolated by solvent diffusion methods. When iron(II) salts and Nadca were used, compound 1 was isolated, which contains mononuclear Fe(L)2(dca)2(H2O)2 units. When FeCl2 or FeClO4 were used, one-dimensional (1D) cation iron(II) chains (2) and two-dimensional (2D) cation iron(II) networks (3) were isolated indicating anion directing structural diversity. Moreover, variable-temperature magnetic susceptibility data of 1-3 were recorded in the temperature range 2-300 K. The magnetic curve of complex 2 was fitted by using the classical spin Heisenberg chain model indicating anti-ferromagnetic interactions (J = -5.31 cm-1). Obviously complexes 1-3 show no detectable thermal spin crossover behaviors, the lack of spin-crossover behavior may be correlated with FeN4O2 coordination spheres in 1-3.
KW - 2, 6-Bis(1, 2,4-triazole-4-yl)-pyridine
KW - Coordination frameworks
KW - Iron
KW - Magnetic properties
UR - http://www.scopus.com/inward/record.url?scp=84946495531&partnerID=8YFLogxK
U2 - 10.1002/zaac.201500605
DO - 10.1002/zaac.201500605
M3 - Article
AN - SCOPUS:84946495531
SN - 0044-2313
VL - 641
SP - 2422
EP - 2428
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
IS - 14
ER -