TY - JOUR
T1 - Oximato-bridged light-lanthanide Ln 4Cu complexes showing ferromagnetic Ln-Cu exchange coupling
AU - Fujiwara, Kei
AU - Okazawa, Atsushi
AU - Kojima, Norimichi
AU - Tanaka, Go
AU - Yoshii, Shunsuke
AU - Nojiri, Hiroyuki
AU - Ishida, Takayuki
N1 - Funding Information:
This work was partly supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (Nos. 22350059 and 23110711 ) and the Inter-University Cooperative Research Program of the Institute for Materials Research, Tohoku University. A part of this work was performed at CINTS, Tohoku University. H. N. has been supported by GCOE program: Materials Integration, Tohoku University, Japan.
PY - 2012/3/19
Y1 - 2012/3/19
N2 - Heterometallic pentanuclear coordination compounds [Ln 3+ 4Cu 2+] involving light lanthanide ions, Ce, Pr, Nd, Sm, and Eu, were synthesized and structurally characterized. The exchange interactions between the Ln and Cu ions were evaluated by high-frequency electron paramagnetic resonance and magnetization studies, clarifying the presence of ferromagnetic exchange couplings in Nd-Cu (J Nd-Cu/k B = +0.30(6) K) and Sm-Cu (J Sm-Cu/k B = +2.08(3) K), very small couplings in Ce-Cu and Pr-Cu, and the absence in Eu-Cu. A significant chemical trend is found in the order of the atomic number.
AB - Heterometallic pentanuclear coordination compounds [Ln 3+ 4Cu 2+] involving light lanthanide ions, Ce, Pr, Nd, Sm, and Eu, were synthesized and structurally characterized. The exchange interactions between the Ln and Cu ions were evaluated by high-frequency electron paramagnetic resonance and magnetization studies, clarifying the presence of ferromagnetic exchange couplings in Nd-Cu (J Nd-Cu/k B = +0.30(6) K) and Sm-Cu (J Sm-Cu/k B = +2.08(3) K), very small couplings in Ce-Cu and Pr-Cu, and the absence in Eu-Cu. A significant chemical trend is found in the order of the atomic number.
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U2 - 10.1016/j.cplett.2012.01.062
DO - 10.1016/j.cplett.2012.01.062
M3 - Article
AN - SCOPUS:84857997540
SN - 0009-2614
VL - 530
SP - 49
EP - 54
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -