TY - JOUR
T1 - Coordination compounds of tetrazolate-5-carboxylate with cobalt(II)
T2 - Synthesis, structure and magnetic properties
AU - Jia, Qin Xiang
AU - Tian, Hua
AU - Yan, Li
AU - Ma, Yu
AU - Gao, En Qing
PY - 2010/11/25
Y1 - 2010/11/25
N2 - Four coordination compounds of tetrazolate-5-carboxylate (tzc) with cobalt(II), [Co2(tzc)2(H2O)6] ·2H2O (1), [Co2(tzc)2(phen) 2(H2O)2]·2H2O (2), [Co 2(tzc)2(2,2′-bpy)2(H2O) 2]·H2O (3), and [Co(tzc)(4,4′-bpy)] (4), where phen = 1,10-phenanthroline, 2,2′-bpy = 2,2′-bipyridyl, and 4,4′-bpy = 4,4′-bipyridyl, have been synthesized by the hydrothermal methods involving the in situ generation of the ligand from sodium ethyl tetrazolate-5-carboxylate. Compounds 1, 2 and 3 all contain dinuclear molecules in which metal ions are linked by the double N-N bridges from two tzc ligands in the μ2-N1,O1:N2 mode, and the dinuclear molecules are associated into 3D architecture through extensive hydrogen bonding and π-π stacking interactions in various fashions. Compound 4 exhibits a two-dimensional layer structure in which Co(tzc) chains with μ3-N1,O1:O1:N2 tzc are cross-linked by 4,4′-bpy. Magnetic investigations on 1-3 revealed intramolecular ferromagnetic coupling through the double N-N bridges with intermolecular ferromagnetic or antiferromagnetic interactions. The interaction through the mixed N-N and μ2-Ocarboxylate bridges in 4 is antiferromagnetic.
AB - Four coordination compounds of tetrazolate-5-carboxylate (tzc) with cobalt(II), [Co2(tzc)2(H2O)6] ·2H2O (1), [Co2(tzc)2(phen) 2(H2O)2]·2H2O (2), [Co 2(tzc)2(2,2′-bpy)2(H2O) 2]·H2O (3), and [Co(tzc)(4,4′-bpy)] (4), where phen = 1,10-phenanthroline, 2,2′-bpy = 2,2′-bipyridyl, and 4,4′-bpy = 4,4′-bipyridyl, have been synthesized by the hydrothermal methods involving the in situ generation of the ligand from sodium ethyl tetrazolate-5-carboxylate. Compounds 1, 2 and 3 all contain dinuclear molecules in which metal ions are linked by the double N-N bridges from two tzc ligands in the μ2-N1,O1:N2 mode, and the dinuclear molecules are associated into 3D architecture through extensive hydrogen bonding and π-π stacking interactions in various fashions. Compound 4 exhibits a two-dimensional layer structure in which Co(tzc) chains with μ3-N1,O1:O1:N2 tzc are cross-linked by 4,4′-bpy. Magnetic investigations on 1-3 revealed intramolecular ferromagnetic coupling through the double N-N bridges with intermolecular ferromagnetic or antiferromagnetic interactions. The interaction through the mixed N-N and μ2-Ocarboxylate bridges in 4 is antiferromagnetic.
KW - Cobalt(II)
KW - Hydrogen bonds
KW - Hydrothermal synthesis
KW - Magnetic properties
UR - https://www.scopus.com/pages/publications/77957986632
U2 - 10.1016/j.ica.2010.05.037
DO - 10.1016/j.ica.2010.05.037
M3 - 文章
AN - SCOPUS:77957986632
SN - 0020-1693
VL - 363
SP - 3750
EP - 3756
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
IS - 14
ER -