Spectroscopic and Kinetic Studies of the Molecular Association Between Ferrocene-Hydroxyaniline Schiff Bases and P-Benzoquinones

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Spectroscopic and Kinetic Studies of the Molecular Association Between Ferrocene-Hydroxyaniline Schiff Bases and P-Benzoquinones

Shaeel A. Al- Thabaiti¹ and Hanadi M. Arafa²

¹Department of Chemistry, Faculty of Girls Education, Tabouk University, P.O.Box 741 Tabouk 71491 (Saudi Arabia).

²Department of Chemistry, Faculty of Science, King Abdul Aziz University, P.O. Box. 80203, Jeddah - 21589 (Saudi Arabia).

DOI : http://dx.doi.org/10.13005/msri/060206

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ABSTRACT:

The molecular interaction of ferrocen hydroxyaniline Schiff bases with 2,3-Dichloro-5.6-dicyanobenzoquinone (DDQ) Chloranil (CHL) and chloranil complexes (CHLC) in ethanol has been studied by electronic absorption, time resolved and solvents with different polarities. The system forms charge transfer (CT) complex characterized by an electronic absorption band. The association constants of the system were calculated at different temperatures within the range interval of 298-330oK, furthermore; the reaction rate constants, order of reaction and the enthalpy change of the association process were elucidated.

KEYWORDS:

Charge-Transfer; Electronic absorption; Solvents effect and Dissociation constants

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