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Huo B, Zhang X, Lu HG, Jin B, Yuan C, Meng Q, Wu YB. Comments on "Planar Tetracoordinate Hydrogen: Pushing the Limit of Multicentre Bonding". Angew Chem Int Ed Engl 2024:e202400927. [PMID: 38570886 DOI: 10.1002/anie.202400927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Indexed: 04/05/2024]
Abstract
In a recent communication (Angew. Chem. Int. Ed. 2024, 63, e202317312), Kalita et al. studied In4H+ system within the frame of single-reference approximation (SRA) and found that the global energy minimum (1 a) adopted the singlet state and a planar tetracoordinate hydrogen (ptH), while the second lowest isomer (1 b) located 3.0 kcal/mol above 1 a and adopted the triplet state as well as non-planar structure with a quasi-ptH. They assessed the reliability of SRA by checking the T1-diagnostic values of coupled cluster calculations. However, according to our multi-configurational second-order perturbation theory calculations at the CASPT2(12,13)/aug-cc-pVQZ (aug-cc-pVQZ-PP for In) level, both 1 a and 1 b exhibit obvious multi-referential characters, as reflected by their largest reference coefficients of 0.928 (86.1 %) and 0.938 (88.0 %), respectively. Moreover, 1 b is 5.05 kcal/mol lower than 1 a at this level, that is, what can be observed in In4H+ system is the quasi-ptH.
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Affiliation(s)
- Bin Huo
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, 92 Wucheng Road, Taiyuan, Shanxi, 030006, People's Republic of China
| | - Xingyu Zhang
- Department of Chemistry, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, Shaanxi 710072, People's Republic of China
| | - Hai-Gang Lu
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, 92 Wucheng Road, Taiyuan, Shanxi, 030006, People's Republic of China
| | - Bo Jin
- Department of Chemistry, Xinzhou Normal University, 1 East Dunqi Street, Xinzhou, Shanxi, 034000, People's Republic of China
| | - Caixia Yuan
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, 92 Wucheng Road, Taiyuan, Shanxi, 030006, People's Republic of China
| | - Qingyong Meng
- Department of Chemistry, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, Shaanxi 710072, People's Republic of China
| | - Yan-Bo Wu
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, 92 Wucheng Road, Taiyuan, Shanxi, 030006, People's Republic of China
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Kalita AJ, Rohman SS, Sahu PP, Guha AK. Reply to the Comments on "Planar Tetracoordinate Hydrogen: Pushing the Limit of Multicentre Bonding (Angew. Chem. Int. Ed. 2024, 63, e202317312, DOI: 10.1002/anie.202317312" by Huo et al). Angew Chem Int Ed Engl 2024:e202403214. [PMID: 38517260 DOI: 10.1002/anie.202403214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Indexed: 03/23/2024]
Abstract
Recently, Huo et al. has commented on our communication (Angew. Chem. Int. Ed. 2024, 63, e202317312, DOI: 10.1002/anie.202317312), regarding the multireference character (MRC) of our proposed cluster. Their argument is based on small HOMO-LUMO gap, fractional occupation density (FOD) and CASPT2(12,13) calculations. They also proposed that the singlet planar In4H+ cluster cannot be observed. We present our calculations which reveals that some of their arguments are based on wrong interpretation of data and inadequate use of methodology. While we certainly agree with the strong physical ground of FOD, CASSF and CASPT2 methodology, we believe that such analysis for clusters is not adequate.
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Affiliation(s)
- Amlan J Kalita
- Advanced Computational Chemistry Centre, Cotton University, Panbazar, Guwahati, Assam, INDIA-, 781001
| | - Shahnaz S Rohman
- Department of Chemistry, National Institute of Technology, Calicut, Kerala, 673601, India
| | - Prem P Sahu
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, 502284, India
- Department of Chemistry "Ugo Schiff", University of Florence, Via della, Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Ankur Kanti Guha
- Advanced Computational Chemistry Centre, Cotton University, Panbazar, Guwahati, Assam, INDIA-, 781001
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