Groups electronegative

Electronegativity is a fundamental characteristic of atoms that is transferred into functional groups. Electronegativity correlates strongly with position in the periodic table. 

Mullay JJ (1987) Estimation of Atomic and Group Electronegativities. 66 1-25 Muller A, Baran E), Carter RO (1976) Vibrational Spectra of Oxo-, Thio-, and Selenometallates of Transition Elements in the Solid State. 26 81-139 Muller A, Diemann E, Jorgensen CK (1973) Electronic Spectra of Tetrahedral Oxo, Thio and Seleno Complexes. Formed by Elements of the Beginning of the Transition Groups. 14 23-47... 

Fig. 35. (a) Correlation between the photolysis rate of halomethyl-cobalamins and the electronegativity of the alkyl ligand. (The electronegativity values are shown as the sums of the Pauling electronegatives of the atoms attached to the methyl carbon.) (b) Correlation between pKa for displacement of benzimidazole and alkyl group electronegativity for a series of halomethyl-cobalamins... 

In order to form stable complexes with calcium and iron ions, the activator must have a strong affinity for the cations. The bonding strength can be determined by the group electronegativity as given by the following equation ... 

The results can be used to predict unknown structural parameters and to establish a group electronegativity scale that will include... 

Return to Problem 2.25. Answer it now in terms of group electronegativity... 

Table 7 shows syn/anti ratios obtained for a variety of styrylsilanes, together with group electronegativities. 

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