Gutmann

Donor strengths, taken from ref. 207b, based upon the solvent effect on the symmetric stretching frequency of the soft Lewis acid HgBr2. Gutmann s donor number taken from ref 207b, based upon AHr for the process of coordination of an isolated solvent molecule to the moderately hard SbCL molecule in dichioroethane. ° Bulk donor number calculated as described in ref 209 from the solvent effect on the adsorption spectrum of VO(acac)2. Taken from ref 58, based on the NMR chemical shift of triethylphosphine oxide in the respective pure solvent. Taken from ref 61, based on the solvatochromic shift of a pyridinium-A-phenoxide betaine dye. 

V. Gutmann, ed.. Halogen Chemisty, Academic Press, New York, 1967 (three volumes). 

The dimensionless acceptor number, AN, ranked the acidity of a solvent and was defined for an acidic solvent A as the relative P NMR downfield shift (A3) induced in triethyl phosphine when dissolved in pure A. A value of 0 was assigned to the shift produced by the neutral solvent hexane, and a value of 100 to the shift produced by SbClj. Gutmann suggested that the enthalpy of acid-base adduct formation be written as ... 

Gutmann, V., The Donor-Acceptor Approach to Molecular Interactions. Plenum Press, New York, 1978. 

The chemistry of Lewis acid-base adducts (electron-pair donor-acceptor complexes) has stimulated the development of measures of the Lewis basicity of solvents. Jensen and Persson have reviewed these. Gutmann defined the donor number (DN) as the negative of the enthalpy change (in kcal moL ) for the interaction of an electron-pair donor with SbCls in a dilute solution in dichloroethane. DN has been widely used to correlate complexing data, but side reactions can lead to inaccurate DN values for some solvents. Maria and Gal measured the enthalpy change of this reaction... 

V. Gutmann (ed.), in Halogen Chemistry, Vol. 2, p. 399, Academic Press, London, 1967 and V. Gutmann, Coordination Chemistry in Nonaqueous Solutions, Springer-Verlag, New York, 1968. 

C. Waddington, in V. Gutmann (ed.). Main Croup Elements Group VII and Noble Gases, MTP International Review of Science Inorganic Chemistry Series 1, Vol. 3, pp. 85-125, Butterworths, London, 1972. 

Using BrF3 solutions, Gutmann and Emeleus [70] prepared a large number of hexafluoroniobates and hexafluorotantalates of alkali and alkali earth metals. 

H. Bohm, G. Gutmann, Proc. 13th Int. Electric Vehicle Symp. 1996, II, 701. 

The observations that addition of pyridine increases the rate of decomposition, shifts the order of reaction from unity to zero, and considerably diminishes formation of 4-nitrophenol also warrants attention. This is compatible with the superior electron-donor properties of pyridine as compared to DMSO (Gutmann, 1976, 1977) generation of the corresponding diazopyridinium cation in one or several of the forms corresponding to 8.59 and 8.60 competes with formation of 8.58. 

Gomberg-Bachmann reaction 62, 116, 189, 206, 253ff., 261, 273, 301 Gutmann donor numbers 375... 

Coordination chemistry of certain transition metal ions the role of the solvent. V. Gutmann, Coord. Chem. Rev., 1967, 2,239-256 (39). 

Application of the functional approach to bond variations under pressure. V. Gutmann and H. Mayer, Struct. Bonding (Berlin), 1976, 31, 50-66 (58). 

Phenomenological approach to cation-solvent interactions. U. Mayer and V. Gutmann, Struct. Bonding (Berlin), 1972,12,113-140 (102). 

The impact of the donor-acceptor concept. V. Gutmann and R. Resch, Comments Inorg. Chem., 1982,1, 265-278 (44). 

The ionisation (heterolysis) of covalent compounds as a coordination chemical phenomenon. V. Gutmann, Angew. Chem., Int. Ed. Engl., 1970, 9, 843-860 (116). 

Ionic and redox equilibria in donor solvents. V. Gutmann, Top. Curr. Chem., 1972, 27, 59-115 (124). 

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