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Baweja S, Kalal B, Kumar Mitra P, Maity S. Competing Excited-State Hydrogen and Proton-Transfer Processes in 6-Azaindole-S 3,4 and 2,6-Diazaindole-S 3,4 Clusters (S=H 2 O, NH 3 ). Chemphyschem 2023:e202300270. [PMID: 37671972 DOI: 10.1002/cphc.202300270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/07/2023]
Abstract
Excited state hydrogen (ESHT) and proton (ESPT) transfer reaction pathways in the three and four solvent clusters of 6-azaindole (6AI-S3,4 ) and 2,6-diazaindole (26DAI-S3,4 )(S=H2 O, NH3 ) were computationally investigated to understand the fate of photo-excited biomolecules. The ESHT energy barriers in (H2 O)3 complexes (39.6-41.3 kJmol-1 ) were decreased in (H2 O)4 complexes (23.1-20.2 kJmol-1 ). Lengthening the solvent chain lowered the barrier because of the relaxed transition states geometries with reduced angular strains. Replacing the water molecule with ammonia drastically decreased the energy barriers to 21.4-21.3 kJmol-1 in (NH3 )3 complexes and 8.1-9.5 kJ mol-1 in (NH3 )4 complexes. The transition states were identified as Ha atom attached to the first solvent molecule. The formation of stronger hydrogen bonds in (NH3 )3,4 complexes resulted in facile ESHT reaction than that in the (H2 O)3,4 complexes. The ESPT energy barriers in 6AI-S3,4 and 26DAI-S3,4 were found to range between 40-73 kJmol-1 . The above values were significantly higher than that of the ESHT processes and hence are considered as a minor channel in the process. The effect of N(2) insertion was explored for the very first time in the isolated solvent clusters using local vibrational mode analysis. In DAI-S4 , the higher Ka (Ha ⋯Sa ) values depicted the increased photoacidity of the N(1)-Ha group which may facilitate the hydrogen transfer reaction. However, the increased N(6)⋯Hb bond length elevated the reaction barriers. Therefore, in the ESHT reaction channel, the co-existence of two competing factors led to a marginal/no change in the overall energy barriers due to the N(2) insertion. In the ESPT reaction pathway, the energy barriers showed notable increase upon N(2) insertion because of the increased N(6)⋯Hb bond length.
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Affiliation(s)
- Simran Baweja
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
| | - Bhavika Kalal
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
| | - Prajoy Kumar Mitra
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
| | - Surajit Maity
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
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Sukpattanacharoen C, Kungwan N. Theoretical insights of solvent effect on excited-state proton transfers of 2-aryl-3-hydroxyquinolone. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Chopra N, Chopra G, Kaur D. Modeling the protein-nucleic acid base interactions through hydrogen-bonded complexes of N-heterocyclic analogs of Indene with amino acid side-chain mimics. Struct Chem 2020. [DOI: 10.1007/s11224-020-01600-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Yi J, Fang H. Effect of water on excited‐state double proton transfer in 7‐azaindole‐H
2
O complex: A theoretical study. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiacheng Yi
- Department of Chemistry and Material Science, College of ScienceNanjing Forestry University Nanjing China
| | - Hua Fang
- Department of Chemistry and Material Science, College of ScienceNanjing Forestry University Nanjing China
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Yi J, Fang H. Effect of different alkyl groups on excited-state tautomerization of 7AI-azaindole-H 2O: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 202:58-64. [PMID: 29777935 DOI: 10.1016/j.saa.2018.05.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 04/21/2018] [Accepted: 05/09/2018] [Indexed: 06/08/2023]
Abstract
The effect of substituted alkyl groups at different substituted position on the first excited-state proton transfer of nR7AI-H2O (n = 2-6; R = CH3, C2H5, CF3) complexes were theoretically investigated at the TD-M06-2X/6-31 + G(d, p) level. Here n value denoted the substituted position Cn of R group. The replacement of alkyl R group had no effect on the features of HOMO and LUMO, but influenced the S0 → S1 adiabatic transition energies of the nR7AI-H2O complex. Through computation, we found that the double proton transfer took place in a concerted but asynchronous protolysis pattern regardless of substituted group R and substituted position in the nR7AI-H2O complex. The vibrational-mode specific nature of ESPT was verified. The alkyl group R changed the geometrical parameters of TS, and resulted in enlarging/narrowing the asynchronousity of ESPT. The ESPT barrier height was also affected by the substituted group and position.
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Affiliation(s)
- Jiacheng Yi
- Department of Chemistry and Material Science, College of Science, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Hua Fang
- Department of Chemistry and Material Science, College of Science, Nanjing Forestry University, Nanjing 210037, People's Republic of China.
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Theoretical study on excited-state multiple proton-transfer process of 7-azaindole with ammonia and mixed water-ammonia: Stepwise or concerted? J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Theoretical study on the substituent effect of halogen atom at different position of 7-azaindole-water derivatives: relative stability and excited-state proton-transfer mechanism. Struct Chem 2018. [DOI: 10.1007/s11224-018-1119-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Yi J, Fang H. Theoretical Study on the Substituent Effect on the Excited-State Proton Transfer in the 7-Azaindole-Water Derivatives. Photochem Photobiol 2017; 94:27-35. [DOI: 10.1111/php.12839] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 08/21/2017] [Indexed: 11/27/2022]
Affiliation(s)
- Jiacheng Yi
- Department of Chemistry and Material Science; College of Science; Nanjing Forestry University; Nanjing Jiangsu China
| | - Hua Fang
- Department of Chemistry and Material Science; College of Science; Nanjing Forestry University; Nanjing Jiangsu China
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Yi J, Fang H. Theoretical investigation on the water-assisted excited-state proton transfer of 7-azaindole derivatives: substituent effect. J Mol Model 2017; 23:312. [DOI: 10.1007/s00894-017-3487-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 09/25/2017] [Indexed: 11/28/2022]
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Yang T, Zhang ZB, Zhang JG. Two Energetic Salts based on 5,5′-Bitetrazole-1,1′-diolate: Syntheses, Characterization, and Properties. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201600469] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ting Yang
- State Key Laboratory of Explosion Science and Technology; Beijing Institute of Technology; 100081 Beijing P. R. China
| | - Zhi-Bin Zhang
- State Key Laboratory of Explosion Science and Technology; Beijing Institute of Technology; 100081 Beijing P. R. China
| | - Jian-Guo Zhang
- State Key Laboratory of Explosion Science and Technology; Beijing Institute of Technology; 100081 Beijing P. R. China
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11
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Theoretical study on excited-state proton transfer via hydrogen-bonded ethanol (EtOH) wire for 7AI in the gas phase. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1723-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Wu WR. Theoretical investigation on the excited-state intramolecular proton transfer mechanism of 2-(2′-benzofuryl)-3-hydroxychromone. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3455] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wei-Rong Wu
- Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering; Jining University; Qufu 273155 Shandong China
- School of Chemistry and Chemical Engineering; Jinan University; Jinan 250022 China
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Fang H, Mai BK, Kim Y. Excited-State Multiple Proton Transfer Depending on the Acidity and Basicity of Mediating Alcohols in 7-Azaindole-(ROH)2(R=H, CH3) Complexes: A Theoretical Study. Photochem Photobiol 2015; 91:306-14. [DOI: 10.1111/php.12417] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 12/29/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Hua Fang
- Department of Applied Chemistry and Institute of Natural Sciences; Kyung Hee University; Yongin-Si Gyeonggi-Do Korea
| | - Binh Khanh Mai
- Department of Applied Chemistry and Institute of Natural Sciences; Kyung Hee University; Yongin-Si Gyeonggi-Do Korea
| | - Yongho Kim
- Department of Applied Chemistry and Institute of Natural Sciences; Kyung Hee University; Yongin-Si Gyeonggi-Do Korea
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Kerdpol K, Daengngern R, Kungwan N. Excited-state proton-transfer reactions of 7-azaindole with water, ammonia and mixed water–ammonia: microsolvated dynamics simulation. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2014.958485] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Daengngern R, Kerdpol K, Kungwan N, Hannongbua S, Barbatti M. Dynamics simulations of excited-state triple proton transfer in 7-azaindole complexes with water, water–methanol and methanol. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.05.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Fang H, Kim Y. Excited-State Tautomerization of 7-Azaindole in Nonpolar Solution: A Theoretical Study Based on Liquid-Phase Potential Surfaces of Mean Force. J Chem Theory Comput 2013; 9:3557-66. [DOI: 10.1021/ct3010694] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hua Fang
- Department of Applied Chemistry, Kyung Hee University, 1 Seochun-Dong,
Giheung-Gu, Yongin-Si, Gyeonggi-Do, 446-701, Republic of Korea
| | - Yongho Kim
- Department of Applied Chemistry, Kyung Hee University, 1 Seochun-Dong,
Giheung-Gu, Yongin-Si, Gyeonggi-Do, 446-701, Republic of Korea
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17
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Capello MC, Broquier M, Dedonder-Lardeux C, Jouvet C, Pino GA. Fast excited state dynamics in the isolated 7-azaindole-phenol H-bonded complex. J Chem Phys 2013; 138:054304. [DOI: 10.1063/1.4789426] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Yu XF, Yamazaki S, Taketsugu T. Theoretical Study on Water-Mediated Excited-State Multiple Proton Transfer in 7-Azaindole: Significance of Hydrogen Bond Rearrangement. J Phys Chem A 2012; 116:10566-73. [DOI: 10.1021/jp308535h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xue-fang Yu
- Department of Chemistry, Faculty
of Science, Hokkaido University, Sapporo
060-0810, Japan
| | - Shohei Yamazaki
- Department of Chemistry, Faculty
of Science, Hokkaido University, Sapporo
060-0810, Japan
| | - Tetsuya Taketsugu
- Department of Chemistry, Faculty
of Science, Hokkaido University, Sapporo
060-0810, Japan
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