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Isomeric structures of benzimidazole, benzoxazole, and benzothiazole derivatives, their electronic properties and transformations

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Abstract

The optimized structures of all isomers of HBI, HBO, HBT, HPyBI, HPyBO, and HPyBT compounds were obtained using the potential energy surface method at the B3LYP/6-311++G(d,p) level of theory. Four isomers and three transition states of their transformations for each compound of HBO, HBT, HPyBO, and HPyBT and two isomers and one transition state for each HBI and HPyBI compounds were found. Energetics, thermodynamic properties, rate constants, and equilibrium constants of their transformations were determined.

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Acknowledgments

This work was partially supported from financial support via the Thailand Research Fund (TRF), Grant No. MRG5080266 and the Center of Excellent for Innovation in Chemistry (PERCH-CIC), Commission on Higher Education, Ministry of Education. This work was partially supported by the National Center of Excellence for Petroleum, Petrochemicals and Advanced Materials.

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Authors and Affiliations

  1. Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chonburi, 20131, Thailand

    Akapong Suwattanamala

  2. Department of Chemistry, Faculty of Science and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Bangkok, 10330, Thailand

    Vithaya Ruangpornvisuti

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  1. Akapong Suwattanamala
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Correspondence to Vithaya Ruangpornvisuti.

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Suwattanamala, A., Ruangpornvisuti, V. Isomeric structures of benzimidazole, benzoxazole, and benzothiazole derivatives, their electronic properties and transformations. Struct Chem 20, 619–631 (2009). https://doi.org/10.1007/s11224-009-9454-8

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