Abstract
X-band e.s.r. spectra of copper(II) complexes of empirical formula Cu(Sal.NCH2CH2O)X (where X= H2O, py or Cl) and [Cu(Sal.NCH2CH2CH2O)]2 (Sal.N= OC6H4CHN) in solid and solution states at room temperature and at 77K are reported. In frozen solution at 77K the spectra show axial symmetry with a dx2−y2 ground state. The in-plane π-bonds show a moderate degree of covalence, while the out-of-plane π-bonds possess ionic character. The orbital populations of these complexes are 70.9, 81.3, 93.3 and 82.4% respectively, indicating a dx2−y2 ground state.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. Abraham and B. Bleaney, Electron Paramagnetic Resonance of Transition Metal Ions, Clarendon Press, Oxford, 1970.
B. J. Hathaway and D. E. Billing, Coord. Chem. Rev., 5, 143 (1970).
R. G. Ismailov, A. A. Medzhidov, L. N. Yuzbasheva and R. A. Manafova, Russ. J. Inorg. Chem., 40, 437 (1995).
M. Majahan, K. N. Saxena and C. P. Saxena, J. Inorg. Nucl. Chem., 43, 2148 (1981).
J. Peisach and W. E. Blumberg in T. F. Yen (Ed.), Electron Spin Resonance of Metal Complexes, Plenum Press, New York, 1969, p. 71.
S. Syamal and L. J. Theriot, J. Coord. Chem., 2, 241 (1973).
T. Tokii, Y. Muto, K. Imai and H. B. Jonassen, J. Inorg. Nucl. Chem., 34, 3377 (1972).
A. L. Abuhijleh, C. Woods and I. Y. Ahmed, Inorg. Chim. Acta, 190, 11 (1991).
M. A. Zorddu, M. I. Pilo, R. Seeber, R. Pogni and R. Basosi, Inorg. Chim. Acta, 184, 185 (1991).
D. R. Brown and D. X. West, J. Inorg. Nucl. Chem., 43, 1017 (1981).
C. Natarajan, P. Shanthi, P. A. Thappan and R. Murvgesan, Transition Met. Chem., 17, 39 (1992).
S. C. Chan, L. L. Koh, P. H. Leung, J. D. Ranford and K. Y. Sim, Inorg. Chim. Acta, 236, 101 (1995).
M. Shazly, A. Dissowky, T. Salem and M. Osman, Inorg. Chim. Acta, 40, 1 (1980).
A. S. El-Tabl, Ph.D. Thesis, Menofia University, Egypt, 1993; A. S. El-Tabl, Transition Met. Chem., 21, 1 (1996).
R. Pogni, G. D. Lunga and R. Basosir, J. Am. Chem. Soc., 115, 1546 (1993).
C. C. Su, S. P. Wu and T. Y. Chang, Polyhedron, 14, 267 (1995).
N. N. Das and A. C. Dash, Polyhedron, 14, 1221 (1995).
J. S. Wood, C. P. Keizers and E. D. Boer, Chem. Phys. Lett., 51, 489 (1977).
M. C. R. Symons, D. X. West and G. Wilkinson, J. Chem. Soc., Dalton Trans., 1696 (1975).
S. K. Mandal and K. Nag, J. Chem. Soc., Dalton Trans., 2141 (1984).
D. O. Jordan and H. W. Taylor, J. Chem. Soc., 994 (1964).
D. X. West, J. S. Ives, J. Krejci, M. M. Salberg, T. L. Zumbahlen, G. A. Bain and A. E. Liberta, Polyhedron, 14, 2189 (1995).
H. A. Kuska and M. T. Rogers in A. E. Martell (Ed.), Coordination Chemistry, Van Nostrand Reinhold, New York, 1971.
B. R. McGarvey, Transition Met. Chem., 13, 89 (1988).
R. K. Kay and G. B. Kauffman, Inorg. Chim. Acta, 174, 257 (1990); 174, 237 (1990).
D. W. Smith, J. Chem. Soc. A, 310 (1970).
Z. W. Mao, K. B. Yu, D. Chen, S. Y. Han, Y. X. Sui and W. X. Tang, Inorg. Chem., 32, 3104 (1993).
M. M. Bhadbhade and D. Srinivas, Inorg. Chem., 32, 5458 (1993).
U. Sakaguchi and A. W. Addison, J. Chem. Soc., Dalton Trans., 600 (1979).
M. C. R. Symons, Chemical and Biochemical Aspects of Electron Spin Resonance, Van Nostrand Reinhold, Wokingham, 1979.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
El-Tabl, A.S. An e.s.r. study of copper(II) complexes of N-hydroxyalkylsalicylideneimines. Transition Metal Chemistry 23, 63–65 (1997). https://doi.org/10.1023/A:1006906001211
Issue Date:
DOI: https://doi.org/10.1023/A:1006906001211