4
Polyhedron
Table 1 Half-wave Potenital (V vs SCE) of [NiL2] in CH2Cl2 and DMF containing 0.1 M TBAP
Oxidation
1st
Reduction
H-L(V)e
2σa
2nd
∆E O
1st
2nd
∆ER
c
d
2a
2b
2c
2a
2b
2c
0.34
0.00
0.12
0.34
0.00
0.12
1.00b
1.07b
1.12b
0.81b
0.81b
0.84b
1.20
1.19
1.12
1.10
1.10
1.08
1.59
1.57
1.37
1.51
1.48
1.27
0.39
0.38
0.25
0.41
0.38
0.19
2.20
2.26
2.24
1.91
1.91
1.92
CH2Cl2
DMF
0.93b
0.93b
0.96b
0.12
0.12
0.12
a Hammett substituent constant, see reference 39. b Irreversible peak potential at a scan rate of 0.10 V/s. c Potential difference
between the second and first oxidations. d Potential difference between the first and second reductions. e The potential difference
between the first oxidation and first reduction.
In conclusion, a series of [NiL2] (2a-c) complexes have
chemical peaks of aromatic protons as compare to normal
metalloporphyrin complexes.
successfully been prepared, and their optical and electrochemical
have been investigated. They were found to adopt orthorhombic
conformations in the X-ray structures. During electrochemical
measurements each compound undergoes an irreversible
oxidation wave and two reversible one-electron reductions waves
in CH2Cl2. While three irreversible oxidation wave and two or
three reversible one-electron reductions waves in DMF. The
electron donating-withdrawing properties of the para-
substituents on the two meso-phenyl rings has great affect the
Appendix A. Supplementary data
CCDC: 1416156 contain the Supplementary crystallographic
data for this 2a. These data can be obtained free of charge via
Cambridge Crystallographic Data Centre, 12 Union Road,
Cambridge CB2 1EZ, UK; fax: (+44) 1223-336-033; or e-mail:
[20] E. V. Rumyantsev, A. Desoki, E. V. Antina, Russ. J. Inorg. Chem. 54
(11) (2009) 1735.
Acknowledgments
[21] G. B Guseva, E. V. Antina, M. B. Berezin, A. I. V'yugin, Russ. J.
Coord. Chem. 30 (1) (2004) 30.
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[25] E. V. Rumyantsev, A. Desoki, E. V. Antina, Russ. J. Inorg. Chem. 54
(11) (2009) 1735.
This work was supported by grants from the Natural Science
Foundation of China (No. 21301074 and 21171076), the Natural
Science Foundation of Jiangsu Province (No. BK20130483),
China Postdoctoral Science Foundation (No. 2013M540415 and
2014T70474) and Jiangsu Provience Universities Natural
Sciences Fund (No. 13KJB150010).
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