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Volumn 127, Issue 31, 2005, Pages 11115-11124

"Knock-out" analogues as a tool to quantify supramolecular processes: A theoretical study of molecular interactions in guanidiniocarbonyl pyrrole carboxylate dimers

Author keywords

[No Author keywords available]

Indexed keywords

DIMERIZATION; HYDROGEN BONDS; MOLECULAR DYNAMICS; MONOMERS; PROBABILITY DENSITY FUNCTION; SOLVENTS; SUPRAMOLECULAR CHEMISTRY;

EID: 23744433302     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja052536w     Document Type: Article
Times cited : (60)

References (113)
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    • For work on capsule formation in polar solvents based on the hetero association of oppositely charged ions, see, e.g.: (a) Grawe, T.; Schrader, T.; Zadmard, R.; Kraft, A. J. Org. Chem. 2002, 67, 3755-3763.
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    • Grawe, T.1    Schrader, T.2    Zadmard, R.3    Kraft, A.4
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    • For examples of recent work on the importance of π stacking in supramolecular aggregates, see, e.g.: (a) Lahiri, S.; Thompson, J. L.; Moore, J. S. J. Am. Chem. Soc. 2000, 122, 11315-11319.
    • (2000) J. Am. Chem. Soc. , vol.122 , pp. 11315-11319
    • Lahiri, S.1    Thompson, J.L.2    Moore, J.S.3
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    • 13344250452 scopus 로고    scopus 로고
    • For comprehensive reviews of anion recognition, see the following: (a) Schug, K. A.; Lindner, W. Chem. Rev. 2005, 105, 67-113.
    • (2005) Chem. Rev. , vol.105 , pp. 67-113
    • Schug, K.A.1    Lindner, W.2
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    • Quantum Chemistry Group, University of Karlsruhe: Germany
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    • (1988) TURBOMOLE
    • Ahlrichs, R.1
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    • Glendening, E. D.; Reed, A. E.; Carpenter, J. E.; Weinhold, F.
    • (b) NBO Version 3.1, Glendening, E. D.; Reed, A. E.; Carpenter, J. E.; Weinhold, F.
    • NBO Version 3.1
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    • note
    • MP2 computations employing the COSMO approach were not possible.
  • 104
    • 33645170496 scopus 로고    scopus 로고
    • note
    • Attempts to find a local minimum for the neutral structure of dimer 1 in a polar solvent (COSMO calculation) failed. All optimizations starting from neutral geometries (proton attached to the carboxylate groups) transformed into zwitterionic structures without any barrier. Geometrical structures with fixed O-H distances (∼1.044 Å) lie about 150 kJ/mol above the zwitterionic structure.
  • 106
    • 33645169080 scopus 로고    scopus 로고
    • note
    • As for 1, the lowest dissociation channel of these knock-out analogues in the gas phase would lead to the neutral monomers. We are, however, mainly interested in a comparison of the various binding schemes and in the results obtained for a polar solvent. Therefore, we will only compare the dissociation energies with respect to the zwitterionic monomers both in the gas phase and in water.
  • 112
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    • -Cl interaction similarly behaves upon solvation than all other effects
    • -Cl interaction similarly behaves upon solvation than all other effects.
  • 113
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    • The major contribution to ΔS is the changes in translation and rotation resulting from the formation of one single dimer from two independent monomers. This part of ΔS, however, is not influenced by the solvent. Its effect on the already smaller absolute dissociation energies in solvent is therefore more pronounced
    • The major contribution to ΔS is the changes in translation and rotation resulting from the formation of one single dimer from two independent monomers. This part of ΔS, however, is not influenced by the solvent. Its effect on the already smaller absolute dissociation energies in solvent is therefore more pronounced.


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