The Study of Electrochemical Behavior of Mono and Dinuclear Co(III) Complexes, trans-[pyCo((DO)(DOH)pn)(L)]PF6 and [{pyCo((DO)(DOH)pn)}2(μ-dicyd)](PF6)2

Document Type : Research Article


Chemistry Department, Sistan and Baluchestan University, P.O. Box 98135-674, Zahedan I. R. IRAN


Electrochemical behavior of the new mono and dinuclear Co (III)  complexes of  the types trans-[pyCo((DO)(DOH)pn )(L)]PF6   and [{py Co((DO)(DOH)pn)}2 (μ-dicyd)] (PF6)2   have been studied in acetonitrile solution.  All the  mono nuclear complexes  show two quasi- reversible reduction couples associate  to Co(III/II)and  Co(II/I). Each of these redox couples split to two  one electron  waves in dinuclear complex.


Main Subjects

[1] Rillema,D.P.,  Sahai, R., Matthhews, P., Shaver, A. K. and Morgan, L., Inorg.  Chem., 29,167(1990).
[2] Denti, G., Campagna, S., Sabatini, L., Serroni, S., Clano, M.,  Balzani, V., Inorg. Chem., 29, 4750 (1990).
[3]  Haga, M ., Ano,  T.,  Kano, K. and YamabeS., Inorg. Chem., 30, 3843(1991).
[4] Mayer, T. J. , Acc. Chem. Res.,   25, 103 ( 1989).
[5] Hanack, M.,  Deger,  S. and Lange, A., Coord.  Chem.  Rev., 83, 135( 1988).
[6] Crutchley, R. J., Coord.  Chem. Rev.,  219, 125 (2001).
[7] Naklicki, M. L., Crutchley, R. J., Inorg. Chem., 28, 4226 (1989).
[8] Crutchley, R. J. and Naklicki, M. L., Inorg. Chem., 28, 1955 (1989).
[9] Aquino,  M. A. S.,Lee, F.L.,Gobe, E.J., n Bensn,C.,  Greedn, J.E. and Crutchley, R. J., J .Am. Chem. Soc., 114, 5130 (1992).
[10] Evans,  C.E.B.,  Ducharme,   D.,  Nakliki,M.L. and Crutchley, R.J., Inorg. Chem., 34,  1350(1995).
[11] Rezvani, A.R., Evans, C.E.B. and Crutchley, R.J.,  Inorg. Chem.,34, 4600(1995).
[12] Crutchley,  R.J., McCaw,  K., Lee , F.L. and Gabe, E.J., Inorg. Chem.,29,2576(1990).
[13]  Rezvani, A.R., Bensimon, C., Cromp, B.,Reber,  C., Greedan, J.E., Kondratiev, V.V. and Crutchley, R.J., Inorg. Chem.,36, 3322(1997).
[14] Evans, C. E.B.,  Yap, G. P. A. and  Crutchley,  R.J. Inorg. Chem. ,37,6167(1998).
[15] Saleh, A.  A. and Crutchley, R.J.,   Inorg. Chem.29, 2132(1990).
[16] Rezvani, A.R. and Crutchley, R.J., Inorg. Chem.33, 170(1994).
[17] Desjardins,  P., Yap,  G.P.A. and Crutchley,   R.J., Inorg. Chem.,38,5901(1999).
[18] Nakliki, M.L. and  Crutchley, R.J., J. Am.Chem.Soc. 116,6045( 1994).
[19] Nakliki, M. L. and  Crutchley, R. J., Inorg.  Chim. Acta 225,123(1994).
[20] Evans, C. E. B., Nakliki,  M. L., Rezvani,  A. R.,  White, C.A., Kondratiev, V.V. and Crutchley, R.J., J.Am. Chem. Soc.,120, 13096( 1998).
[21] Mosher, P.J.,  Yap, C.P.A. and Crutcley, R.J., Inorg. Chem.,40,1189( 2001).
[22]  Al-Noaimi,   M.A., Yap,   G.P.A. and Crutchley, R.J., Inorg. Chem., 43, 1770, (2004).
[23] Xu,G.L.,  DeRosa, M.C., Crutchley, R.J. and  Ren, T.,  J. Am. Chem. Soc.,126,3728( 2004).
[24] Xu, G.L., DeRosa, M. C., Crutchley, R. J. and Ren, T., J.Am. Chem. Soc.,125,10057( 2003).
[25] DeRosa, M. C., Al-Motlag, F. and Crutchley, R.J.  Inorg. Chem.,40,1406( 2001).
[26] Lever, A.B.P., Inorganic Electronic Spectroscopy, 2end ed., Elsevier Publishing Co., Amsterdam, (1984).
[27] Creutz,  C., Newton,  M. D. and Sutin, N. , J. Photo-chem. Photobiol, A:chem.,82,47 (1994).
[28] Hadadzadeh,  H.,   DeRosa,  M.C.,   Yap, G .P.A Rezvani, A.R. and Crutchley,R.J., Inorg. Chem., 41, 521 (2002).
[29] Hadadzadeh, H. and Rezvani, A. R., J. Chem Research, No.3,139( 2002).
[30] Hadadzadeh,  H.,  Rezvani,   A.R. and  Patrick, B., Inorg. Chim. Acta ,336,125( 2002).
[31] Hadadzadeh, H. and  Rezvani, A.R., Iran. J. Chem. & Chem. Eng. (IJCCE) ,21 (1),   21( 2002).
[32]  Richardson  ,D. E. and  Tabe, H.,  Inorg. Chem., 20, 1278(1981).
[33] Gerli A. and Marzilli, L.G.  Inorg. Chem.31, 1152 (1992).
[34]  Seeber,R.,Parker, W. O. Marzilli ,P.A. and Marzilli L. G.,Organometallics, 80,2377(1989).
[35] Elliott, C. M. , Hershenhard, E., Finke,R.G. and Smith, B. L., J. Am. Chem. Soc. ,103,5558(1981).