Mechanistic studies on the Reactions of Cis‐Diaquobis (Biguanide)Chromium(III) ion with 2,2′‐dipyridyl and 1,10‐phenanthroline | Zendy

Sengupta S. | Zendy; Banerjea D. | Zendy

Premium

Mechanistic studies on the Reactions of Cis‐Diaquobis (Biguanide)Chromium(III) ion with 2,2′‐dipyridyl and 1,10‐phenanthroline

Author(s) -

Sengupta S.,

Banerjea D.

Publication year - 1976

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.19764240114

Subject(s) - biguanide , phenanthroline , chemistry , chromium , aqueous solution , reaction rate constant , ligand (biochemistry) , medicinal chemistry , kinetic energy , coordination sphere , ion , inorganic chemistry , transformation (genetics) , stereochemistry , kinetics , organic chemistry , receptor , physics , medicine , biochemistry , metformin , quantum mechanics , diabetes mellitus , endocrinology , gene

Kinetic studies in aqueous solution on the replacement of the aqua ligands in cis‐[Cr(BigH) 2 (OH 2 ) 2 ] 3+ (BigH = biguanide, C 2 H 7 N 5 ) by 2,2′‐dipyridyl (dipy) and 1,10‐phenanthroline (phen) forming [Cr(BigH) 2 (AA)] 3+ (AA = dipy or phen) have been made spectrophotometrically. In both the cases the reaction proceeds by a path purely first‐order with respect to the ligand. From the values of the rate constant at four different temperatures, values of the activation parameters, ΔH≠ and ΔS≠, have been evaluated for each system. The results are consistent with a mechanism involving outer‐sphere association of the reactants followed by transformation of the outer‐sphere complex in a dissociative process.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research