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Hilal SH, Saravanaraj AN, Carreira LA. Development of Monopole Interaction Models for Ionic Compounds. Part I: Estimation of Aqueous Henry's Law Constants for Ions and Gas Phase pKa Values for Acidic Compounds. Mol Inform 2014; 33:92-103. [PMID: 27485566 DOI: 10.1002/minf.201300092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 09/26/2013] [Indexed: 11/09/2022]
Abstract
The SPARC (SPARC Performs Automated Reasoning in Chemistry) physicochemical mechanistic models for neutral compounds have been extended to estimate Henry's Law Constant (HLC) for charged species by incorporating ionic electrostatic interaction models. Combinations of absolute aqueous pKa values, relative pKa values in the gas phase, and aqueous HLC for neutral compounds have been used to develop monopole interaction models that quantify the energy differences upon moving an ionic solute molecule from the gas phase to the liquid phase. Inter-molecular interaction energies were factored into mechanistic contributions of monopoles with polarizability, dipole, H-bonding, and resonance. The monopole ionic models were validated by a wide range of measured gas phase pKa data for 450 acidic compounds. The RMS deviation error and R(2) for the OH, SH, CO2 H, CH3 and NR2 acidic reaction centers (C) were 16.9 kcal/mol and 0.87, respectively. The calculated HLCs of ions were compared to the HLCs of 142 ions calculated by quantum mechanics. Effects of inter-molecular interaction of the monopoles with polarizability, dipole, H-bonding, and resonance on acidity of the solutes in the gas phase are discussed.
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Affiliation(s)
- S H Hilal
- Ecosystems Research Division, National Exposure Research Laboratory, U.S. Environmental Protection Agency, Athens, GA 30605 phone: 706-355-8210.
| | - A N Saravanaraj
- Department of Chemistry, University of Georgia, Athens, GA 30602
| | - L A Carreira
- Department of Chemistry, University of Georgia, Athens, GA 30602
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Su P, Wu W, Kelly CP, Cramer CJ, Truhlar DG. VBSM: A Solvation Model Based on Valence Bond Theory. J Phys Chem A 2008; 112:12761-8. [DOI: 10.1021/jp711655k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peifeng Su
- Department of Chemistry, State Key Laboratory of Physical
Chemistry of Solid Surfaces, Centre for Theoretical Chemistry, Xiamen
University, Xiamen 36105, P. R. China, and Department of Chemistry
and Supercomputing Institute, University of Minnesota, 207 Pleasant
Street S.E., Minneapolis, Minnesota 55455-0431
| | - Wei Wu
- Department of Chemistry, State Key Laboratory of Physical
Chemistry of Solid Surfaces, Centre for Theoretical Chemistry, Xiamen
University, Xiamen 36105, P. R. China, and Department of Chemistry
and Supercomputing Institute, University of Minnesota, 207 Pleasant
Street S.E., Minneapolis, Minnesota 55455-0431
| | - Casey P. Kelly
- Department of Chemistry, State Key Laboratory of Physical
Chemistry of Solid Surfaces, Centre for Theoretical Chemistry, Xiamen
University, Xiamen 36105, P. R. China, and Department of Chemistry
and Supercomputing Institute, University of Minnesota, 207 Pleasant
Street S.E., Minneapolis, Minnesota 55455-0431
| | - Christopher J. Cramer
- Department of Chemistry, State Key Laboratory of Physical
Chemistry of Solid Surfaces, Centre for Theoretical Chemistry, Xiamen
University, Xiamen 36105, P. R. China, and Department of Chemistry
and Supercomputing Institute, University of Minnesota, 207 Pleasant
Street S.E., Minneapolis, Minnesota 55455-0431
| | - Donald G. Truhlar
- Department of Chemistry, State Key Laboratory of Physical
Chemistry of Solid Surfaces, Centre for Theoretical Chemistry, Xiamen
University, Xiamen 36105, P. R. China, and Department of Chemistry
and Supercomputing Institute, University of Minnesota, 207 Pleasant
Street S.E., Minneapolis, Minnesota 55455-0431
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Platinum electrode functionalized with calix[4]arene thin films for impedimetric detection of sodium ions. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2002. [DOI: 10.1016/s0928-4931(02)00057-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Improving the recovery of ionic solutes from aqueous media by modified thermospray liquid-liquid extraction. Anal Chem 2000; 72:1819-22. [PMID: 10784148 DOI: 10.1021/ac991105r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Our previously reported procedure for the extraction of charged compounds from aqueous samples by thermospray liquid-liquid extraction (TSLLE) was essentially a one-step extraction involving large sample volumes. In this report, recirculative extraction, analysis of small sample volumes, the halide ion effect, and the effect of solvency or solvent modification on the extraction efficiency of benzoic acid (BA) by TSLLE were investigated. Compared to the one-step procedure that resulted in an extraction efficiency of only 28% for BA in n-hexane, recirculative TSLLE resulted in a BA recovery of 65% after five extraction cycles. When applied to sample volumes of 5-10 mL, TSLLE extracted BAwith a precision of 2.8-6.1%. NaF, NaCl, and NaBr were also used to enhance analyte recovery. NaF gave the best recovery, 104%, for BA relative to the 88% obtained by batch processing. Some improvements in the extraction efficiency was observed when solvent modifiers such as methanol, ethanol, and 2-propanol were used.
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Kawata M, Ten-no S, Kato S, Hirata F. Solvent Effect on Acidity: A Hybrid Approach Based on the RISM and the Hartree−Fock Equations. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp952102v] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masaaki Kawata
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan, and Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444, Japan
| | - Seiichiro Ten-no
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan, and Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444, Japan
| | - Shigeki Kato
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan, and Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444, Japan
| | - Fumio Hirata
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan, and Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444, Japan
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Kawata M, Ten-no S, Kato S, Hirata F. The solvent effect on the acidities of haloacetic acids in aqueous solution. A RISM-SCF study. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00520-e] [Citation(s) in RCA: 18] [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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Fourier transform ion cyclotron resonance investigation of the deuterium isotope effect on gas phase ion/molecule hydrogen bonding interactions in alcohol—fluoride adduct ions. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0168-1176(92)80110-m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Gas-phase acidities of carboxylic acids and alcohols from collision-induced dissociation of dimer cluster ions. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0168-1176(90)87028-f] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Intramolecular and liquid structure of 2,2,2-trifluoroethanol by X-ray diffraction. J SOLUTION CHEM 1989. [DOI: 10.1007/bf00651809] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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