Summary
A study of the formation of complexes between [Cu(bipy)]2+ and ox2− and sq2− in aqueous solution, (bipy being 2,2′-bipyridine and ox2− and sq2− the dianions of ethanedioic acid and 3,4-dihydroxy-3-cyclobutene-1,2-dione, respectively), has been carried out with the aim of comparing the coordinating properties of these related ligands. The constants of the equilibria (i) and (ii)
have been determined by potentiometry and spectrophotometry at 25.0°C and 0.1 M NaNO3:logβ=5.78(2) and 2.16(2) for the oxalato- and squarato-complex, respectively. Such different values reveal that these related ligands coordinate to copper in a different fashion, as has been shown recently by x-ray diffraction studies. Polynuclear complex formation was not observed in solution in our experimental conditions for either system.
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References
R. I. Gelb,Anal. Chem.,43, 1110 (1971).
D. Alexandersson and N. G. Vannerberg,Acta Chem. Scand.,26, 1909 (1972).
A. E. Martell and R. M. Smith,Critical Stability Constants, Vol. III, New York, 1977.
O. Kahn,Angew. Chem. Int. Ed. Engl.,24, 834 (1985).
R. West and H. Y. Niu,J. Am. Chem. Soc.,85, 2589 (1963).
P. H. Tedesco and H. F. Walton,Inorg. Chem.,8, 932 (1969).
D. Alexandersson and N. G. Vannerberg,Acta Chem. Scand.,27, 3499 (1973).
D. Alexandersson and N. G. Vannerberg,Acta Chem. Scand.,28, 423 (1974).
M. Habenschuss and B. C. Gerstein,J. Chem. Phys.,61, 852 (1974)
E. Riegler,Dissertation, Munchen University, 1979.
A. Weiss, E. Riegler, I. Alt, H. Boehme and C. Robl,Z. Naturforsch,41b, 18 (1986).
C. Robl and A. Weiss,Z. Naturforsch.,41b, 1341 (1986).
M. Aguiló, X. Solans, M. Verdaguer, J. Faus, M. Julve and A. Gleizes, unpublished work.
H. Sigel,Angew. Chem. Internat. Ed.,14, 394 (1975).
R. F. Bauer and W. M. Smith,Can. J. Chem.,43, 2755 (1965).
H. Sigel and R. B. Martin,Chem. Rev.,82, 385 (1982).
R. Tribolet, R. B. Martin and H. Sigel,Inorg. Chem.,26, 638 (1987).
P. O'Brien,J. Chem. Soc., Dalton Trans., 1540 (1981).
W. Fitzgerald, J. Foley, D. McSweeney, N. Ray, D. Sheahan, S. Tyagi, B. Hathaway and P. O'Brien,J. Chem. Soc., Dalton Trans., 1117 (1982).
J. H. Yoe and A. L. Jones,Ind. Eng. Chem. Anal. Ed.,16, 111 (1944).
H. Sigel, P. R. Huber and R. F. Pasternack,Inorg. Chem.,10, 2226 (1971) and ref. therein.
P. Gans, A. Sabatini and A. Vacca,J. Chem. Soc., Dalton Trans., 1195 (1985).
E. Asmus,Z. Anal. Chem.,178, 104 (1960).
R. DeWitt and J. I. Watters,J. Am. Chem. Soc.,76, 3810 (1954)
J. I. Watters,J. Am. Chem. Soc.,81, 1560 (1959).
W. B. Schaap and D. L. McMasters,J. Am. Chem. Soc.,83, 4699 (1961).
D. Coucouvanis, D. G. Holah and F. J. Hollander,Inorg. Chem.,14, 2657 (1975).
D. Coucouvanis, D. Swenson, N. C. Baenziguer, C. Murphy, D. G. Holah, N. Sfarnas, A. Simopoulos and A. Kostikas,J. Am. Chem. Soc.,103, 3350 (1981).
C. Robl and A. Weiss,Z. Naturforsch.,41b, 1490 (1986)
C. Robl, V. Gnutzmann and A. Weiss,Z. Anorg. Allg. Chem.,549, 187 (1987)
C. Robl and A. Weiss,Mat. Res. Bull.,22, 373 (1987).
J. C. Trombe, J. F. Petit and A. Gleizes,Nouv. J. Chem.,12, 197 (1988).
M. Mollar,Ph.D. Thesis, University of Valencia, Spain, 1988.
J. Subert,Farm. Obz.,49, 71 (1980).
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Castro, I., Faus, J. & Julve, M. Study of the interaction of [Cu(bipy)]2+ with oxalate and squarate in aqueous solution. Transition Met Chem 13, 455–458 (1988). https://doi.org/10.1007/BF01043711
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DOI: https://doi.org/10.1007/BF01043711