Catalysis of Thermal Isomerization of Methyl Yellow by Salts | Zendy

Atsuko Yano | Zendy; Yoshie Sato | Zendy; Kyohei Dachimba | Zendy; Ryuzi Yano | Zendy

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Catalysis of Thermal Isomerization of Methyl Yellow by Salts

Author(s) -

Atsuko Yano,

Yoshie Sato,

Kyohei Dachimba,

Ryuzi Yano

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.9b04342

Subject(s) - azobenzene , isomerization , halide , chemistry , catalysis , ion , alkali metal , inorganic chemistry , ethanol , density functional theory , photochemistry , organic chemistry , molecule , computational chemistry

Cu 2+ ions are reported to catalyze the thermal isomerization (TI) of cis -azobenzene. It was found that some alkali halides (NaCl, KCl, NaBr, and KBr) also catalyze the TI of 4-dimethylamino-azobenzene in ethanol. These tendencies were attributed to the interaction between the azo group and the cation based on experimental data and density functional theory (DFT) calculations. Some Na salts (CH 3 COONa, Na 2 HPO 4 , and Na 2 SO 3 ) were found to inhibit the TI of 4-dimethylamino-azobenzene in ethanol. It is inferred that the weak acid ions in these salts decrease the concentration of H + ions that catalyze the TI process.

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