Abstract
[M′(hfacac)2(bpym)] complexes, where M′ = CoII, NiII or ZnII, hfacac = hexafluoroacetylacetonate and bpym = 2,2′bipyrimidine; and [Cl2M(μbpym)M′(hfacac)2] complexes, where M = CoII, NiII MnII or ZnII M′ = NiII; M = NiII or ZnII and M′ = ZnII; M = NiII and M′ = CoII have been prepared and characterized by chemical analysis, conductance measurements, IR and electronic spectroscopies and magnetic susceptibility measurements (4.2–292 K range). The dinuclear NiII–NiII, CoII–NiII and MnII–NiII complexes are antiferromagnetic, with an intramolecular exchange parameter, J, of −2.3–8.9 cm−1. CoII and MnII are in a high spin state. The low temperature effect observed in monomers and in NiII–ZnII dimers is considered a consequence of either an intermolecular antiferromagnetic interaction or the zero-field splitting in NiII.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. Munno and M. Julve, Acta Crystallogr., C50, 1034 (1994).
G. Munno, M. Julve, F. Lloret, J. Cano and A. Caneschi, Inorg. Chem., 34, 2048 (1995).
I. Castro, J. Sletten, L.K. Glaerum, J. Cano, F. Lloret, J. Faus and M. Julve, J. Chem. Soc. Dalton Trans., 3207 (1995).
I. Castro, J. Sletten, L.K. Glaerum, F. Lloret, J. Faus and M. Julve, J. Chem. Soc. Dalton Trans., 2777 (1994).
G. Munno, M. Julve, F. Lloret and A. Derory, J. Chem. Soc., Dalton Trans., 1179 (1993).
G. Munno, M. Julve, F. Lloret, J. Faus and A. Caneschi, J. Chem. Soc., Dalton Trans., 1175 (1994).
A. Real, J. Zarembowitch, O. Kahn and X. Solans, Inorg. Chem., 26, 2939 (1987).
E. Andrés, G. Munno, M. Julve, J.A. Real and F. Lloret, J. Chem. Soc., Dalton Trans., 2169 (1993).
G. Munno, R. Ruiz, F. Lloret, J. Faus, R. Sessoli and M. Julve, Inorg. Chem., 34, 408 (1995).
D.M. Hong, Y.Y. Chu and H.H. Wei, Polyhedron, 15, 447 (1996).
G. Munno, M. Julve, M. Verdaguer and G. Bruno, Inorg. Chem., 32, 2215 (1993).
G. Munno, M. Julve, J.A. Real, F. Lloret and R. Scopelliti, Inorg. Chim. Acta, 250, 81 (1996).
D. M. Hong, H.H. Wei, L.L. Gan, G.H. Lee and Y. Wang, Polyhedron, 15, 2335 (1996).
G. Munno, T. Poerio, M. Julve, F. Lloret, G. Viau and A. Caneschi, J. Chem. Soc., Dalton Trans., 601 (1997).
J. Pinkas, J.C. Huffman, M.H. Chisholm and K.G. Caulton, Inorg. Chem., 34, 5314 (1995).
C. Overton and J.A. Connor, Polyhedron, 1, 53 (1982).
S. Lanza, Inorg. Chim. Acta, 75, 131 (1983).
M. Julve, M. Verdaguer, G. Munno, J.A. Real and G. Bruno, Inorg. Chem., 32, 795 (1993).
G. Brewer and E. Sinn, Inorg. Chem., 24, 4580 (1985).
A. Cotton and R.H. Holm, J. Am. Chem. Soc., 82, 2979 (1960).
V. Barone, C. Cauletti, F. Lelj, M.N. Piancastelli and N. Russo, J. Am. Chem. Soc., 104, 4571 (1982).
Q. Jaradat, K. Barqawi and T.S. Akasheh, Inorg. Chim. Acta, 116, 63 (1984).
R.R. Ruminski and J.D. Petersen, Inorg. Chim. Acta, 88, 63 (1984).
R.R. Ruminski and J.D. Petersen, Inorg. Chim. Acta, 97, 129 (1985).
R. Sahai, L. Morgan and D.P. Rillema, Inorg. Chem., 27, 3495 (1988).
C. Vogler and W. Kaim, J. Organometal. Chem., 398, 293 (1990).
O. Kahn, Molecular magnetism. VCH Publisher Inc., 1993. (a) p. 26; (b) p. 17.
Ch. J. O'Connor, Progr. Inorg. Chem., 29, 203 (1982). (a) p. 239; (b) p. 208.
G. Munno, G. Viau, M. Julve, F. Lloret and J. Faus, Inorg. Chim. Acta, 257, 121 (1997).
G. Munno and M. Julve, NATO ASI Series, Serie C, 474, 139 (1996).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Barquín, M., Garmendia, M.J.G. & Bellido, V. Homo- and heterodinuclear 2,2′-bipyrimidine-bridged complexes. Transition Metal Chemistry 24, 546–552 (1999). https://doi.org/10.1023/A:1006920500732
Issue Date:
DOI: https://doi.org/10.1023/A:1006920500732