TY - JOUR
T1 - Three-dimensional iron-series coordination networks based on antiferromagnetic and ferromagnetic dinuclear motifs with mixed carboxylate and aqua bridges
AU - Zhang, Xiu Mei
AU - Jing, Xue Hui
AU - Gao, En Qing
PY - 2011/1/15
Y1 - 2011/1/15
N2 - Three coordination polymers of the iron-series transition metal ions with 4-(3-pyridyl)benzoic acid (4,3-Hpybz) ligand were synthesized and structurally and magnetically characterized. They have the formulas [M2(4,3-pybz) 4(H2O)] (M = Fe, 1; Co, 2; and Ni, 3). In these isomorphous compounds, octahedrally coordinated metal ions are linked by the mixed (μ-syn, syn-COO)2(μ-H2O) triple bridges to give dinuclear motifs, which serves as tetrahedral building units and are further linked by 4,3-Hpybz to give rise to diamond networks. Magnetic studies demonstrated that the (COO)2(H2O) triple bridges induce antiferromagnetic coupling between metal ions in 1 and 2, but compound 3 with the same mixed triple bridges exhibits ferromagnetic coupling, which may be related to orbital countercomplementarity.
AB - Three coordination polymers of the iron-series transition metal ions with 4-(3-pyridyl)benzoic acid (4,3-Hpybz) ligand were synthesized and structurally and magnetically characterized. They have the formulas [M2(4,3-pybz) 4(H2O)] (M = Fe, 1; Co, 2; and Ni, 3). In these isomorphous compounds, octahedrally coordinated metal ions are linked by the mixed (μ-syn, syn-COO)2(μ-H2O) triple bridges to give dinuclear motifs, which serves as tetrahedral building units and are further linked by 4,3-Hpybz to give rise to diamond networks. Magnetic studies demonstrated that the (COO)2(H2O) triple bridges induce antiferromagnetic coupling between metal ions in 1 and 2, but compound 3 with the same mixed triple bridges exhibits ferromagnetic coupling, which may be related to orbital countercomplementarity.
KW - Cobalt
KW - Coordination polymers
KW - Iron
KW - Magnetic properties
KW - Nickel
UR - https://www.scopus.com/pages/publications/78650572908
U2 - 10.1016/j.ica.2010.09.017
DO - 10.1016/j.ica.2010.09.017
M3 - 文章
AN - SCOPUS:78650572908
SN - 0020-1693
VL - 365
SP - 240
EP - 245
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
IS - 1
ER -