Summary
The tripodal copper(II) thiolate complexes Cu(L1)(Cl)-2H2O and Cu(L1)(mim)(Cl) [H(L1) = N-(2-mercaptoethyl)-N,N-bis (pyrid-2′-ylmethyl)amine and mim = N-methylimidazole] have been isolated. Both contain monomeric copper(II) and display two ligand field bands and axial cryogenic e.p.r. spectra, suggesting a squarebased geometry. A copper(II) thiolate complex Cu(L2)(Cl)-H2O [H(L2) = N-(2-mercaptoethyl)-N,N′,N′-tris(benzimidazol-2′-ylmethyl)-1,2-ethanediamine] with a CuN5S chromophore has been also isolated. It exhibits only one ligand field band and an axial cryogenic e.p.r. spectrum, consistent with a distorted tetragonal coordination geometry. All the thiolates display intense S− → CuII charge transfer bands in the u.v. region, suggesting equatorial thiolate coordination. All of the complexes exhibit irreversible electrochemical behaviour.
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References
J. M. Guss and H. C. Freeman, J. Molec. Biol., 169, 513 (1983).
E. N. Baker, J. Molec. Biol., 203, 1071 (1988); K. Petratos, Z. Dauter and K. S. Wilson, Acta Crystallogr., B44, 628 (1988); E. T. Adman, R. E. Stenkamp, L. C. Sieker and L. H. Jensen, J. Molec. Biol., 123, 35 (1978).
R. D. Bereman, J. R. Dorfman, J. Bordner, D. P. Rilleman, P. McCarthy and G. D. J. Shields, Inorg. Biochem., 16, 47 (1982).
J. S. Thompson, T. J. Marks and J. A. Ibers, Proc. Natl. Acad. Sci., USA, 74, 3118 (1977); J. S. Thompson, T. J. Marks and J. A. Ibers, J. Am. Chem. Soc., 101, 4180 (1979).
J. M. Downes, J. Whelan and B. Bosnich, Inorg. Chem., 20, 1081 (1981).
A. W. Addison, T. N. Rao and E. Sinn, Inorg. Chem., 23, 1957 (1984).
J. K. Romary, R. D. Zachariasen, J. D. Barger and H. Schiesser, J. Chem. Soc. (C), 2884 (1968).
G. C. Baumann, M. F. Summers, J. P. Hutchinson, J. Zubieta and G. Marzilli, Inorg. Chem., 23, 3104 (1984).
J. van Rijn, PhD thesis, State University of Leiden, Leiden, The Netherlands, 1985.
P. J. M. W. L. Birker and H. C. Freeman, J. Am. Chem. Soc., 99, 6890 (1977).
A. R. Amundsen, J. Whelan and B. Bosnich, J. Am. Chem. Soc., 99, 6730 (1977).
G. Roewer, K. Kuhne and G. Kempe, Z. Chem., 16, 117 (1976).
A. C. Braithwaite, C. E. F. Rickard and T. N. Waters, Transition Met. Chem., New York, 1, 5 (1975).
A. D. Duclaux and P. Perichon, J. Chem. Phys. Phys-Chim. Biol., 73, 1058 (1976).
Y. Sugiura, Inorg. Chem., 17, 2176 (1978); Y. Sugiura and Y. Hirayama, J. Am. Chem. Soc., 99, 1581 (1977).
Y. Sugiura, Y. Hirayama, H. Tanaka and K. Ishizu, J. Am. Chem. Soc., 97, 5577 (1975).
P. Kroneck, C. Naumann and P. Hemmerich, Inorg. Nucl. Chem. Lett., 7, 659 (1971).
S. E. Livingstone and J. E. Oluka, Transition Met. Chem., New York, 2, 163, 190 (1977).
K. D. Karlin, J. C. Hayes, S. Juen, J. P. Hutchinson and J. Zubieta, Inorg. Chem., 21, 4106 (1982).
K. D. Karlin, P. L. Dahlstorm, J. R. Hyde and J. Zubieta, J. Chem. Soc., Chem. Commun., 906 (1980); J. Zubieta, K. D. Karlin and J. C. Hayes in K. D. Karlin and J. Zubieta (Eds.), Copper Coordination Chemistry: Biochemical and Inorganic Perspective, Adenine Press, Guilderland, New York, 1983, p. 97.
H. K. Baek and R. A. Holwerda, Inorg. Chem., 22, 3452 (1983).
U. Rajendran, R. Viswanathan, M. Palaniandavar and M. Lakshminarayanan, J. Chem. Soc., Dalton Trans., 3563 (1992); U. Rajendran, R. Viswanathan, M. Palaniandavar and M. Lakshminarayanan, J. Chem. Soc., Dalton Trans., 1219 (1994).
G. Anderegg, E. Hubmann, N. G. Podder and F. Wenk, Helv. Chim. Acta, 60, 123 (1977).
K. D. Karlin, B. I. Cohen, J. C. Hayes, A. Farooq and J. Zubieta, Inorg. Chem., 26, 147 (1987).
P. J. M. W. L. Birker, H. M. J. Hendriks, J. Reedijk and G. C. Verschoor, Inorg. Chem., 20, 2408 (1981); H. M. J. Hendriks, P. J. M. W. L. Birker, J. van Rijn, G. C. Verschoor and J. Reedijk, J. Am. Chem. Soc., 104, 3607 (1982).
J. L. Hughey, T. G. Fawcett, S. M. Rudich, R. A. Lalancett, J. A. Potenza and H. J. Schugar, J. Am. Chem. Soc., 101, 2617 (1979).
D. Mastropaolo, J. A. Thich, J. A. Potenza and H. J. Schugar, J. Am. Chem. Soc., 99, 424 (1977).
E. I. Solomon, J. W. Hare and H. B. Gray, Proc. Natl. Acad. Sci., USA, 98, 8344 (1976).
D. R. McMillin, R. C. Rosenberg and H. B. Gray, Proc. Natl. Acad. Sci., USA, 71, 4760 (1974).
D. L. Tennent and D. R. McMillin, J. Am. Chem. Soc., 101, 2307 (1979).
J. S. Thompson, J. L. Zifzmann, T. J. Marks and J. A. Ibers, Inorg. Chim. Acta, 46, L101 (1980).
J. Becher, D. J. Brockway, K. S. Murray, P. J. Newman and H. Toftlund, Inorg. Chem., 21, 1991 (1982).
C. K. Jorgensen, Oxidation Numbers and Oxidation States, Springer-Verlag, New York, 1969, p. 144; D. E. Nikles, M. J. Powers and F. L. Urbach, Inorg. Chem., 22, 3210 (1983).
A. W. Addison, P. J. Burke, K. Henrick, T. N. Rao and E. Sinn, Inorg. Chem., 22, 3645 (1983).
A. W. Addison in K. D. Karlin and J. Zubieta (Eds.), Copper Coordination Chemistry: Biochemical and Inorganic Perspective, Adenine Press, Guilderland, New York, 1983, p. 109: T. Sakurai, S. Suzuki and A. Nakahara, Bull. Chem. Soc. Jpn, 54, 2313 (1981).
U. Sakaguchi and A. W. Addison, J. Chem. Soc., Dalton Trans., 600 (1979).
A. W. Addison, M. Palaniandavar, T. N. Rao, J. Reedijk and J. van Rijn, Unpublished work.
M. Murali, M. Palaniandavar and T. Pandiyan, Inorg. Chim. Acta, 224, 19 (1994).
A. W. Addison, Inorg. Chim. Acta, 162, 217 (1989).
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Pandiyan, T., Murali, M. & Palaniandavar, M. Copper (II)-thiolate complexes with novel tripodal- and tetrapodal-like benzimidazoles. Transition Met Chem 20, 440–444 (1995). https://doi.org/10.1007/BF00141513
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DOI: https://doi.org/10.1007/BF00141513