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Ponomarev D, Takhistov V, Slayden S, Liebman J. Thermochemistry of organic, elementorganic and inorganic species. Part XXI: Enthalpies of formation for bi- and triradicals of main group elements’ halogenides. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.05.040] [Citation(s) in RCA: 5] [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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Ponomarev D, Takhistov V, Slayden S, Liebman J. Thermochemistry of organic, elementorganic and inorganic species. Part XX. Enthalpies of formation for free radicals of main group elements’ halogenides. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.05.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Takhistov V, Golovin A. Thermochemistry of organic, heteroorganic and inorganic species. XV. The enthalpies of formation for halogenides of main group elements. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2005.06.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kovács A. Chemical vapor deposition of gallium nitride from the GaCl(3)+NH(3) system. Theoretical study of the structure and thermodynamics of potential intermediates formed in the gaseous phase. Inorg Chem 2002; 41:3067-75. [PMID: 12054984 DOI: 10.1021/ic011140s] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Quantum chemical calculations at the B3P86/6-311G(d,p) level have been performed on potential intermediate molecules in the chemical vapor deposition (CVD) of GaN from the GaCl(3) + NH(3) system. The investigated molecules included the monomer (Cl(x)GaNH(x), x = 1-3) and oligomer species (Cl(2)GaNH(2))(n) with n = 1-3 and (ClGaNH)(n) with n = 1-4 as well as the respective chain dimers and trimers. The calculations revealed the importance of intramolecular Cl...H hydrogen bonding and dipole-dipole interactions in determining the conformational properties of the larger species. Except for the ClGaNH monomer, the Ga[bond]N bonding has a single bond character with a strong ionic contribution. Our thermodynamic study of the composition of the gaseous phase supported the predominance of the Cl(3)GaNH(3) complex under equilibrium conditions. Additionally, the calculated Gibbs free energies of various GaCl(3) + NH(3) reactions imply the favored formation of "saturated" chain and cyclic oligomers below 1000 K.
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Affiliation(s)
- Attila Kovács
- Research Group for Technical Analytical Chemistry of the Hungarian Academy of Sciences at the Institute of General and Analytical Chemistry, Technical University of Budapest, H-1111 Budapest, Szt. Gellért tér 4, Hungary.
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Affiliation(s)
- M Hargittai
- Structural Chemistry Research Group, Hungarian Academy of Sciences, Eötvös University, Pf. 32, H-1518 Budapest, Hungary
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Timoshkin AY, Suvorov AV, Bettinger HF, Schaefer HF. Role of the Terminal Atoms in the Donor−Acceptor Complexes MX3−D (M = Al, Ga, In; X = F, Cl, Br, I; D = YH3, YX3, X-; Y = N, P, As). J Am Chem Soc 1999. [DOI: 10.1021/ja983408t] [Citation(s) in RCA: 114] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexey Y. Timoshkin
- Contribution from the Department of Chemistry, Inorganic Chemistry Group, St. Petersburg State University, University Prospect 2, 198904, Old Peterhof, St. Petersburg, Russia, and Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602-2556
| | - Andrew V. Suvorov
- Contribution from the Department of Chemistry, Inorganic Chemistry Group, St. Petersburg State University, University Prospect 2, 198904, Old Peterhof, St. Petersburg, Russia, and Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602-2556
| | - Holger F. Bettinger
- Contribution from the Department of Chemistry, Inorganic Chemistry Group, St. Petersburg State University, University Prospect 2, 198904, Old Peterhof, St. Petersburg, Russia, and Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602-2556
| | - Henry F. Schaefer
- Contribution from the Department of Chemistry, Inorganic Chemistry Group, St. Petersburg State University, University Prospect 2, 198904, Old Peterhof, St. Petersburg, Russia, and Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602-2556
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