SPECTROPHOTOMETRIC STUDY OF CHARGE-TRANSFER COMPLEXES OF DDQ WITH SOME BENZOPHENONES IN CHLOROFORM SOLUTION

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SEMNANI A.; SHAMSIPOUR M.

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Paper Information

Journal: JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY) Year:2003 | Volume:2 | Issue:3-4 Page(s): 56-66

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Title

SPECTROPHOTOMETRIC STUDY OF CHARGE-TRANSFER COMPLEXES OF DDQ WITH SOME BENZOPHENONES IN CHLOROFORM SOLUTION

Author(s)

SEMNANI A. | SHAMSIPOUR M. | Issue Writer Certificate

Keywords

DDQQ4

BENZOPHENPONESQ4

CHARG-TRANSFER COMPLEXQ4

SPECTROPHOTOMETRYQ4

Abstract

Spectrophotometric study concerning the charge transfer interaction between 2,3- dichloro-5,6-dicyano-l,4- benzoquione (DDQ) and some benzophenoes has been carried out in chloroform at 25° C. Comparison of the spectra of the complexes of 1.2- dimethoxybenzene-DDQ and benzophenone-DDQ is indicative of two kinds of transitions: (i) n→π*,and (ii) π→ π* respectively,). Formation constants of the resulting 1:1 molecular complexes were determined by using the Hildebrand method. The values of formation constants are in parallel with the charge density on the oxygen atoms of carbonyl groups. Also steric hindrance of substituents affects the stability of the resulting complexes. The shifts in stretching frequency of carbonyl groups of benzophenones, brought about upon complexation, further supports that donation takes place from oxygens of the carbonyl groups.

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APA: Copy

SEMNANI, A., & SHAMSIPOUR, M.. (2003). SPECTROPHOTOMETRIC STUDY OF CHARGE-TRANSFER COMPLEXES OF DDQ WITH SOME BENZOPHENONES IN CHLOROFORM SOLUTION. JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY), 2(3-4), 56-66. SID. https://sid.ir/paper/44093/en

Vancouver: Copy

SEMNANI A., SHAMSIPOUR M.. SPECTROPHOTOMETRIC STUDY OF CHARGE-TRANSFER COMPLEXES OF DDQ WITH SOME BENZOPHENONES IN CHLOROFORM SOLUTION. JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY)[Internet]. 2003;2(3-4):56-66. Available from: https://sid.ir/paper/44093/en

IEEE: Copy

A. SEMNANI, and M. SHAMSIPOUR, “SPECTROPHOTOMETRIC STUDY OF CHARGE-TRANSFER COMPLEXES OF DDQ WITH SOME BENZOPHENONES IN CHLOROFORM SOLUTION,” JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY), vol. 2, no. 3-4, pp. 56–66, 2003, [Online]. Available: https://sid.ir/paper/44093/en

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