Kamlet—Abboud—Taft

For reviews, sec Abraham Doherty Kamlet Taft Chem. Br. 1986, 551-554 Kamlet Abboud Taft Prog. Phys. Org. Chem. 1981,13, 485-630. For a comprehensive table and a and p values, see Kamlet Abboud Abraham Taft J. Org. Chem. 1983, 48, 2877. For a criticism of the p scale, see Laurence Nicolet Helbert J. Chem. Soc., Perkin Trans. 2 1986, 1081. See also Nicolet Laurence Lugon J. Chem. Soc., Perkin Trans. 2 1987, 483 Abboud Roussel Gcntric Sraidi Lauransan Guihgncuf Kamlet Taft./. Org. Chem. 1988,53, 1545 Abraham Grcllier Prior Morris Taylor J. Chem. Soc., Perkin Trans. 2 1990, 521. 

For reviews of solvent polarity scales, see Abraham Grellier Abboud Doherty Taft Can. J. Chem. 1988,66. 2673-2686 Kamlet Abboud Taft Prog. Phys. Org. Chem. 1981,13,485-630 Shorter Correlation Analysis of Organic Reactivity Wiley New York, 1982, pp. 127-172 Reichardt, Ref. 386 Reichardt Dimroth, Ref. 386 Abraham Prog. Phys. Org. Chem. 1974, II, I -87 Koppel Palm, in Chapman Shorter Advances in Linear Free Energy Relationships, Plenum New York, 1972, pp. 203 280 Ref. 384. See also Chastrette Carrclto Tetrahedron 1962,38, 1615 Chastrette Rajzmann Chanon Purcell J. Am. Chem. Soc. 1965,107, 1. 

Kamlet Abboud Taft J. Am. Chem. Soc. 1977, 99, 6027 Doherty Abraham Harris Taft Kamlet J. Org Chem. 1986, 51. 4872 Kamlet Doherty Abboud Abraham Taft CHEMTECH 1986, 566-576, and other papers in this scries. Sec also Doan Drago J. Am, Chem. Soc. 1982, 104, 4524 Kamlet Abboud Taft, Ref. 395 Bekfiiek J. Chem. Soc.. Perkin Trans. 2 1986, 1425 Abe Bull. Chem. Soc. Jpn. 1990, 63, 2328,... 

Many different solvent parameters and multiparameter equations have been introduced in this Chapter 7. Certainly, only a few of them will survive the test of applicabihty and aeeeptanee by organic chemists. Indeed, the preference for certain time-tested solvent seales and multiparameter treatments is already clearly discernible. Amongst the one-parameter seales, the t(30) or Ej seale and the DN scale have frequently been used, while the Kamlet-Abboud-Taft (KAT) LSER approach seems to be the most widely applied multiparameter approach. 

The solvatochromic shifts obtained for the BPHT electronic absorption and fluorescence emission maxima were also applied to evaluate the contributions of the polarity/polarizability of the solvent and its hydrogen-bond donor (HBD) ability to solute-solvent interactions in the ground and first excited singlet states of BPHTs. For this purpose, a simplified form of the classical Kamlet-Abboud-Taft solvatation energy relationship was used as follows [87,88] ... 

For the reaction performed in DMF + [lmim][PFg] nuxtures, the k response patterns reveals a continuous decrease with the increase in the concentration of IL. Moreover, it was of interest to relate the kinetic data to the molecular-microscopic solvent properties in order to aid in the interpretation of the solvent effects in the reaction under study. In order to quantitatively interpret the influence of the solvent effects on the reaction, the reported kinetic data and the quantified molecular-microscopic solvent properties were correlated by means of the multiparametric approach developed by Kamlet-Abboud-Taft [26]. 

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