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T–1/K–1
Fig. 10. Temperature dependences of 1H NMR chemical shifts
of o-H( ), m-CH2( ), m-CH3(ꢀ), p-CH2( ), and p-
•
CH3(ꢁ) hydrogen atoms for I in the presence of
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Signals of the ethoxy groups changed in a similar way;
one broad signal at 25◦C splitted into several peaks
at −80◦C, and became one sharp signal when adding
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ruthenium(II)–ruthenium(III) tetracarboxylato units linked
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Ishida, H., Handa, M., Hiromitsu, I., & Mikuriya, M. (2009a).
Synthesis, magnetic and spectral properties, and crystal
structure of mixed-valence ruthenium(II,III) 3,4,5-tributan-
oxybenzoate. In M. Melník, P. Segľa, & M. Tatarko (Eds.),
Insights into coordination, bioinorganic and applied inor-
ganic chemistry (pp. 197–203). Bratislava, Slovakia: Slovak
University of Technology Press.
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1
TBAC. Temperature dependence of the H NMR sig-
nals of I with excessive amounts of TBAC in CD2Cl2
is shown in Fig. 10. Chemical shifts of all protons in
I (o-H, m-CH2, m-CH3, p-CH2, and p-CH3) are pro-
portional to the 1/T values. This behavior is typical
of a paramagnetic compound (Chisholm et al., 1996;
Furukawa & Kitagawa, 2004). Thus, the spin state of
the dinuclear ruthenium(II,III) core may not change
in the measured temperature range.
Acknowledgements. The authors thank Dr. Kenji Yoza of
Bruker AXS K. K. for his assistance in the X-ray crystal struc-
ture analysis. The present work was partially supported by the
Support Project to Assist Private Universities in Developing
Bases for Research and Grants in Aid for Scientific Research
Nos. 22550066 and 20550066 from the Ministry of Education,
Culture, Sports, Science and Technology.
Ishida, H., Handa, M., Hiromitsu, I., Ujiie, S., & Mikuriya, M.
(2007). Synthesis and magnetic properties of polymer com-
plexes of ruthenium(II,III) 3,4,5-trioctanoxybenzoate linked
by chloro and cyanato ligands with liquid-crystalline behav-
ior. In M. Melník, J. Šima, & M. Tatarko (Eds.), Achieve-
ments in coordination, bioinorganic and applied inorganic
chemistry (pp. 121–127). Bratislava, Slovakia: Slovak Uni-
versity of Technology Press.
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