KINETICS AND MECHANISM OF THE SUBSTITUTION REACTION OF AMINE IN (BIS(ACETYLE ACETONATO) ETHYLENEDIIMINE) (DIAMINE)COBALT(III) PERCHLORATE WITH N3-, BR- AND NCS-

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SHABANI MOHSEN; YOUSEFI MOHAMMAD; ABDOUSS MAJID; AZIZNEJAD FARIBORZ; SHAHROZVAND HASHEM

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Journal: Iranian Journal of Chemistry and Chemical Engineering Year:2011 | Volume:30 | Issue:1 (57) Page(s): 49-54

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Title

KINETICS AND MECHANISM OF THE SUBSTITUTION REACTION OF AMINE IN (BIS(ACETYLE ACETONATO) ETHYLENEDIIMINE) (DIAMINE)COBALT(III) PERCHLORATE WITH N3-, BR- AND NCS-

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Keywords

KINETICS

MECHANISM

COBALT (III) COMPLEXES

AMINE LIGANDS

SCHIFF BASE

ACTIVATION ENERGY

Abstract

A series of complexes of the type trans- [Co (acacen) (amine)2] ClO4, where (acacen) is the (bis (acetyleacetone) ethylenediimine) and the amines are Benzyl amine (bzlan) 1, 2-amino pyrimidine (2ampy) 2, N-methylpipirazine (nmpip) 3, 3-methyl pyridine (3mpy) 4, p-toluidine (p-toldn) 5, has been synthesized and characterized by uv-vis. and FT-IR. The KINETICS of the substitution reaction of [Co (acacen) (p-toldn)2] ClO4 with N3-, Br- and NCS- ions has been investigated in an aqueous solution by using UV-vis. spectroscopy. It has been found that the reaction occurs in two steps, hydrolysis and ligation. The first order rate constants for hydrolysis and ligation reactions in 313K have been determined. The rate of reaction is almost independent of the type and the concentration of anion. So, the interchange dissociative (Id) MECHANISM is suggested. The reaction has been carried out in several temperatures and the ACTIVATION ENERGY for hydrolysis and ligation (for NCS- anion) reactions have been calculated about 55 and 95 kJ/mol respectively.

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APA: Copy

SHABANI, MOHSEN, YOUSEFI, MOHAMMAD, ABDOUSS, MAJID, AZIZNEJAD, FARIBORZ, & SHAHROZVAND, HASHEM. (2011). KINETICS AND MECHANISM OF THE SUBSTITUTION REACTION OF AMINE IN (BIS(ACETYLE ACETONATO) ETHYLENEDIIMINE) (DIAMINE)COBALT(III) PERCHLORATE WITH N₃^-, BR^- AND NCS^-. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), 30(1 (57)), 49-54. SID. https://sid.ir/paper/572949/en

Vancouver: Copy

SHABANI MOHSEN, YOUSEFI MOHAMMAD, ABDOUSS MAJID, AZIZNEJAD FARIBORZ, SHAHROZVAND HASHEM. KINETICS AND MECHANISM OF THE SUBSTITUTION REACTION OF AMINE IN (BIS(ACETYLE ACETONATO) ETHYLENEDIIMINE) (DIAMINE)COBALT(III) PERCHLORATE WITH N₃^-, BR^- AND NCS^-. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)[Internet]. 2011;30(1 (57)):49-54. Available from: https://sid.ir/paper/572949/en

IEEE: Copy

MOHSEN SHABANI, MOHAMMAD YOUSEFI, MAJID ABDOUSS, FARIBORZ AZIZNEJAD, and HASHEM SHAHROZVAND, “KINETICS AND MECHANISM OF THE SUBSTITUTION REACTION OF AMINE IN (BIS(ACETYLE ACETONATO) ETHYLENEDIIMINE) (DIAMINE)COBALT(III) PERCHLORATE WITH N₃^-, BR^- AND NCS^-,” IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), vol. 30, no. 1 (57), pp. 49–54, 2011, [Online]. Available: https://sid.ir/paper/572949/en

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