TY - JOUR
T1 - Magnetic behaviors of cobalt(II) complex chains connected with a 1,3-phenylenebis(4-pyridylcarbene) magnetic coupler
AU - Yoshihara, Daisuke
AU - Karasawa, Satoru
AU - Koga, Noboru
N1 - Funding Information:
D. Y. acknowledges a scholarship from the Japan Society for the Promotion of Science (JSPS).
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - One-to-one mixtures of Co(hfpip and hfnip)2; hfpip = 1,1,1,5,5,5-hexafluoro-4-(phenylimino)-2-pentanonato and hfnip = 1,1,1,5,5,5-hexafluoro-4-(1-naphthylimino)-2-pentanonato, and 1,3-phenylenebis(4-pyridyldiazomethane), D2py2, gave diazo-cobalt complexes, 1 and 2, respectively, formulated by [Co(hfpip and hfnip) 2(D2py2)]n. Complex 2 was obtained as a single crystal and was found to have a zig-zag chain structure in the cis coordination of pyridines in D2py2 to the cobalt ions by X-ray crystallography. After irradiation of microcrystalline samples of 1 and 2, the generated carbene-cobalt complexes, 1c and 2c, showed magnetic properties due to ferromagnetic chains. Those complexes exhibited slow magnetic relaxations with Ueff/kB = 109 and 129 K and temperature-dependent hysteresis loops with Hc = 11 and 9 kOe at 1.9 K for 1c and 2c, respectively.
AB - One-to-one mixtures of Co(hfpip and hfnip)2; hfpip = 1,1,1,5,5,5-hexafluoro-4-(phenylimino)-2-pentanonato and hfnip = 1,1,1,5,5,5-hexafluoro-4-(1-naphthylimino)-2-pentanonato, and 1,3-phenylenebis(4-pyridyldiazomethane), D2py2, gave diazo-cobalt complexes, 1 and 2, respectively, formulated by [Co(hfpip and hfnip) 2(D2py2)]n. Complex 2 was obtained as a single crystal and was found to have a zig-zag chain structure in the cis coordination of pyridines in D2py2 to the cobalt ions by X-ray crystallography. After irradiation of microcrystalline samples of 1 and 2, the generated carbene-cobalt complexes, 1c and 2c, showed magnetic properties due to ferromagnetic chains. Those complexes exhibited slow magnetic relaxations with Ueff/kB = 109 and 129 K and temperature-dependent hysteresis loops with Hc = 11 and 9 kOe at 1.9 K for 1c and 2c, respectively.
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U2 - 10.1016/j.poly.2013.04.006
DO - 10.1016/j.poly.2013.04.006
M3 - Article
AN - SCOPUS:84887495753
SN - 0277-5387
VL - 66
SP - 194
EP - 200
JO - Polyhedron
JF - Polyhedron
ER -