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The Proton Affinity of Some Substituted Naphtalenes (CROSBI ID 82612)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Eckert-Maksić, Mirjana ; Antol, Ivana ; Klessinger, Martin ; Maksić, Zvonimir B. The Proton Affinity of Some Substituted Naphtalenes // Journal of physical organic chemistry, 12 (1999), 597-604-x

Podaci o odgovornosti

Eckert-Maksić, Mirjana ; Antol, Ivana ; Klessinger, Martin ; Maksić, Zvonimir B.

engleski

The Proton Affinity of Some Substituted Naphtalenes

The absolute proton affinity (PA) pertaining aromatic carbons of the monosubstituted naphtalenes involving CH3, OH, CHO, NO2 and Cl substituents is calculated at the MP2(fc)/6-31G**//HF/6-31G* + ZPVE(HF/6-31G*) level of theory. Increments corresponding to unsubstituted positions within the naphtalene skeleton are estimated. They can be used in estimating PAs in multiply substituted naphtalenes by using a simple additivity rule based on the independent substituent approximation (ISA). It is shown that increments are good indicators of the electrophylic substitution reactivity. The proton affinities of a large number of polysubstituted methylnaphtalenes is examined employing the additivity formula. It is found that the protonated forms, which exhibit the largest PAs corresponding to arenium ions observed by the NMR technique in the superacid media.

Polysubstituted naphthalenes; Proton Affinity; Additivity rule; Ab initio calculations

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Podaci o izdanju

12

1999.

597-604-x

objavljeno

0894-3230

Povezanost rada

Kemija

Indeksiranost