Artículos de revistas
Ion Pair Association Of Complexes Of La3+ And Nd3+ With Br- And No3 - In N,n-dimethylacetamide
Registro en:
Polyhedron. , v. 1, n. 1, p. 49 - 51, 1982.
2775387
10.1016/S0277-5387(00)81067-0
2-s2.0-0040770407
Autor
Airoldi C.
Volpe P.L.O.
Chagas A.P.
Institución
Resumen
The formation constants and the respective variations of enthalpy were obtained by means of calorimetric titration of the lanthanides La3+ and Nd3+ with bromide and nitrate in N,N-dimethylacetamide. These thermochemical data were calculated for the 1:1 and 1:2 species which are less stable than the corresponding species obtained with chloride. The order of stability Cl- > Br->NO3 - was established for both species of La3+, and the order Br->Cl->LNO3 - for 1:1 species of Nd3+. NdCl2 + and NdBr2 + species were not detected. Our results support the view that the metal-anion interactions involve inner sphere species. © 1982. 1 1 49 51 Lagowski, (1967) The Chemistry of Non-Aqueous Solvents, 11. , Academic Press, London Gutmann, (1968) Coordination Chemistry in Non-Aqueous Solutions, , Springer, New York Simoni, Airoldi, Chagas, Thermochemistry of dichlorobis(NN-dimethylacetamide)-zinc(II), and dichloro(NN-dimethylacetamide)-cadmium(II) and -mercury(II) (1980) Journal of the Chemical Society, Dalton Transactions, p. 156 Mayer, Ionic equilibria in donor solvents (1975) Pure and Applied Chemistry, 41, p. 291 Mayer, (1976) Coord. Chem. Rev., 21, p. 159 Volpe, Chagas, Airoldi, (1980) J. Inorg. Nucl. Chem., 42, p. 1321 Nugent, Burnett, Morss, (1973) J. Chem. Thermodynamics, 5, p. 665 David, Samboon, Guillaumont, Edelstein, (1978) J. Inorg. Nucl. Chem., 40, p. 69 Choppin, Bertha, (1973) J. Inorg. Nucl. Chem., 35, p. 1309 Dassent, (1970) Inorganic Energetics, , Penguin, London Ahrland, Enthalpy and Entropy Changes by Formation of Different Types of Complexes (1967) Helvetica Chimica Acta, 50, p. 306 Ahrland, Thermodynamics of the stepwise formation of metal-ion complexes in aqueous solution (1973) Struct. Bonding, 15, p. 167 Prue, (1969) J. Chem. Ed., 46, p. 12 Jørgensen, Judd, Hypersensitive pseudoquadrupole transitions in lanthanides (1964) Molecular Physics, 8, p. 281 Choppin, Henrie, Buys, (1966) Inorg. Chem., 5, p. 1743 Karraker, (1970) J. Chem. Ed., 47, p. 424 Forsberg, Observations on the Rare Earths. Studies of Ethylenediamine Complexes of the Lanthanide Ions (1968) Ph.D. Thesis, , University of Illinois, Microfilm Corp Vicentini, Airoldi, (1970) An. Acad. Brasil. Ciênc., 42, p. 431 Airoldi, Vicentini, (1972) An. Acad. Brasil, Ciênc., 44, p. 427 Smith, Jr., Wertz, (1975) J. Am. Chem. Soc., 97, p. 2365 Smith, Jr., McCain, Wertz, A preliminary report of the coordination of lanthanum(III) in lanthanum chloride-methanol solutions (1976) Journal of the American Chemical Society, 99, p. 5125 Steele, Wertz, (1977) Inorg. Chem., 16, p. 1225 Johnson, (1980) J. Chem. Ed., 57, p. 475 Cater, High temperature chemistry of rare earth compounds: Dramatic examples of periodicity (1978) Journal of Chemical Education, 55, p. 697