Outer-sphere effects on the redox properties of the system Co(en)33+/Co(en)32+
作者： U. Mayer , A. Kotocova , V. Gutmann , W. Gerger
DOI: 10.1016/S0022-0728(79)80206-5
关键词:
摘要: Abstract The half-wave potentials for the polarographic reduction of Co(en)33+ to Co(en)32+ have been determined in solvents: nitromethane, acetonitrile, propanediol-1,2-carbonate, acetone, dimethylformamide, dimethylacetamide, dimethylsulfoxide and hexamethylphosphoric acid triamide. A nearly linear relationship was found between E1/2 donor numbers solvents which shows that outer-sphere solvation a lesser extent involves donor-acceptor interactions solvent molecules hydrogen atoms coordinated ethylenediamine ligands. observed shift more negative potential values corresponds an increase reducing properties system Co(en)33+/Co(en)32+ with increasing solvents. correlation 59Co n.m.r. chemical shifts Co(en)3(ClO4)3 solution proves is accompanied by electron density at Co maximum difference investigated 0.51 V free energy 49.5 kJ mol−1.
elsevier.com
sci-hub.se 参考文章(15)
U. Mayer, V. Gutmann, Phenomenological approach to cation-solvent interactions Structure and Bonding. pp. 113- 140 ,(1972) , 10.1007/BFB0117542
Ulrich Mayer, Eine semiempirische Gleichung zur Beschreibung des Lösungsmitteleinflusses auf Statik und Kinetik chemischer Reaktionen. Teil I Monatshefte Fur Chemie. ,vol. 109, pp. 421- 433 ,(1978) , 10.1007/BF00906360
V. Gutmann, G. Gritzner, K. Danksagmuller, Solvent effects on the redox potential of hexacyanoferrate(III)-Hexacyanoferrate(II) Inorganica Chimica Acta. ,vol. 17, pp. 81- 86 ,(1976) , 10.1016/S0020-1693(00)81961-1
V Gutmann, Empirical approach to ligand effects on the kinetics of substitution and redox reactions Coordination Chemistry Reviews. ,vol. 12, pp. 263- 293 ,(1974) , 10.1016/S0010-8545(00)82023-8
Orest Popovych, Roger G. Bates, Estimation of Medium Effects for Single Ions in Non-Aqueous Solvents Critical Reviews in Analytical Chemistry. ,vol. 1, pp. 73- 117 ,(1970) , 10.1080/10408347008542592
O. Duschek, V. Gutmann, Polarographische Untersuchungen der lonen von Kupfer, Silber und Quecksilber in Lösungsmitteln unterschiedlicher Donizität Zeitschrift für anorganische und allgemeine Chemie. ,vol. 394, pp. 243- 253 ,(1972) , 10.1002/ZAAC.19723940306
N. Tanaka, K. Harada, Conductance behavior of some tris(ethylenediamine)cobalt(III) complexes and their ion association in some dipolar aprotic solvents Electrochimica Acta. ,vol. 21, pp. 615- 620 ,(1976) , 10.1016/0013-4686(76)85159-6
G. Gritzner, K. Danksagmüller, V. Gutmann, Solvent effects on the redox potentials of tetraethylammonium hexacyanomanganate(III) and hexacyanoferrate(III) Journal of Electroanalytical Chemistry. ,vol. 90, pp. 203- 210 ,(1978) , 10.1016/S0022-0728(78)80054-0
M.T. Beck, Chemistry of the outer-sphere complexes Coordination Chemistry Reviews. ,vol. 3, pp. 91- 115 ,(1968) , 10.1016/S0010-8545(00)80106-X
U. Mayer, IONIC EQUILIBRIA IN DONOR SOLVENTS Pure and Applied Chemistry. ,vol. 41, pp. 291- 326 ,(1975) , 10.1351/PAC197541030291