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Saloni J, Roszak S, Miller M, Leszczynski J. Thermodynamic Studies of Bromine−Iodine Competition in the Formation of NaSnXYZ (X, Y, Z, = Br or I) Complexes. J Phys Chem A 2007; 111:9139-44. [PMID: 17722887 DOI: 10.1021/jp071313k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The thermodynamic studies of NaSnXYZ (X, Y, Z = Br or I) are presented. The determined theoretical structures and vibrational properties lead to improved experimental values of dissociation enthalpies and entropies. The ab initio thermodynamic data is also reported. The nature of bonding of binary SnXY-NaZ complexes is discussed with the emphasis on differences between bromine and iodine.
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Affiliation(s)
- Julia Saloni
- Computational Center for Molecular Structure and Interactions, Jackson State University, Jackson, Mississippi 39217, USA
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Hilpert K, Roszak S, Saloni J, Miller M, Lipkowski P, Leszczynski J. The Dimerization of SnCl2(g): Mass Spectrometric and Theoretical Studies. J Phys Chem A 2005; 109:1286-94. [PMID: 16833442 DOI: 10.1021/jp0460691] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The vaporization of SnCl2(s) was investigated in the temperature range between 382 and 504 K by the use of Knudsen effusion mass spectrometry. The Sn+, SnCl+, SnCl2+, Sn2Cl3+, and Sn2Cl4+ ions were detected in the mass spectrum of the equilibrium vapor. The SnCl2(g) and Sn2Cl4(g) gaseous species were identified, and their partial pressures were determined. The structure and vibrational properties of both species and corresponding fragmentation products were studied applying density functional theory and second-order Møller-Plesset perturbation theoretical approaches. Molecular parameters yielded thermodynamic functions by the use of statistical thermodynamics. The sublimation enthalpies of SnCl2(g) and Sn2Cl4(g) at 298 K resulting from the second- and third-law methods are evaluated as 130.9 +/- 6.2 kJ mol(-1) and 155.8 +/- 7.3 kJ mol(-1), respectively. The enthalpy changes of the dissociation reactions Sn2Cl4(g) = 2 SnCl2(g) were obtained as delta(d)H degrees(298) = 106.8 +/- 6.2 kJ mol(-1). The corresponding theoretical value amounts to 103.4 kJ mol(-1). The change of monomer properties due to the dimerization reaction is also discussed.
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Affiliation(s)
- K Hilpert
- Institute for Materials and Processes in Energy Systems, Research Center Jülich, 52425 Jülich, Germany
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Saloni J, Roszak S, Miller M, Hilpert K, Leszczynski J. Sn2BrxI4-x(g) and Sn2BryI3-y+ (x = 0−4, y = 0−3) Species: Mass Spectrometric Evidence and Quantum-Chemical Studies. J Phys Chem A 2004. [DOI: 10.1021/jp036866j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. Saloni
- Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Research Centre Jülich, Institute for Materials and Processes in Energy Systems, 52425 Jülich, Germany, and Computational Centre for Molecular Structure and Interactions, Jackson State University, Jackson, Mississippi 39217
| | - S. Roszak
- Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Research Centre Jülich, Institute for Materials and Processes in Energy Systems, 52425 Jülich, Germany, and Computational Centre for Molecular Structure and Interactions, Jackson State University, Jackson, Mississippi 39217
| | - M. Miller
- Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Research Centre Jülich, Institute for Materials and Processes in Energy Systems, 52425 Jülich, Germany, and Computational Centre for Molecular Structure and Interactions, Jackson State University, Jackson, Mississippi 39217
| | - K. Hilpert
- Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Research Centre Jülich, Institute for Materials and Processes in Energy Systems, 52425 Jülich, Germany, and Computational Centre for Molecular Structure and Interactions, Jackson State University, Jackson, Mississippi 39217
| | - J. Leszczynski
- Institute of Physical and Theoretical Chemistry, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wroclaw University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland, Research Centre Jülich, Institute for Materials and Processes in Energy Systems, 52425 Jülich, Germany, and Computational Centre for Molecular Structure and Interactions, Jackson State University, Jackson, Mississippi 39217
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Levy JB, Jancsó G, Hargittai M. Structure and Thermodynamics of the Tin Dichloride DimerA Computational Study. J Phys Chem A 2003. [DOI: 10.1021/jp036125i] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jack B. Levy
- Department of Chemistry, University of North Carolina at Wilmington, Wilmington, North Carolina, KFKI Atomic Energy Research Institute, POB 49, Budapest H-1525, Hungary, and Structural Chemistry Research Group of the Hungarian Academy of Sciences at Eötvös University, POB 32, H-1518 Budapest, Hungary
| | - Gábor Jancsó
- Department of Chemistry, University of North Carolina at Wilmington, Wilmington, North Carolina, KFKI Atomic Energy Research Institute, POB 49, Budapest H-1525, Hungary, and Structural Chemistry Research Group of the Hungarian Academy of Sciences at Eötvös University, POB 32, H-1518 Budapest, Hungary
| | - Magdolna Hargittai
- Department of Chemistry, University of North Carolina at Wilmington, Wilmington, North Carolina, KFKI Atomic Energy Research Institute, POB 49, Budapest H-1525, Hungary, and Structural Chemistry Research Group of the Hungarian Academy of Sciences at Eötvös University, POB 32, H-1518 Budapest, Hungary
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