메뉴 건너뛰기




Volumn 22, Issue 9, 2009, Pages 834-844

Physical image versus structure relation. Part 14-an attempt to rationalize some acidic region 13C NMR- pH titration shifts for tetraaza macrocycles throughout the conformational GIAO DFT computational results: A pendant-arm cyclam case

Author keywords

Cyclic protonated polyamines; IEF PCM model; Intramolecular H bonding; MMX and OPLS AA force fields; Multidentate ligands; Scorpiand; Solvent effects; Supermolecular ONIOM GIAO DFT NMR calculations

Indexed keywords

AMINES; CONFORMATIONS; HYDROGEN BONDS; LIGANDS; MOLECULES; POSITIVE IONS; PROTONATION; QUANTUM CHEMISTRY; SOLVENTS;

EID: 68949221544     PISSN: 08943230     EISSN: 10991395     Source Type: Journal    
DOI: 10.1002/poc.1529     Document Type: Article
Times cited : (19)

References (87)
  • 21
    • 68949202551 scopus 로고    scopus 로고
    • University of tódź, tódź.
    • D. Sroczyński, Doctoral Thesis, University of tódź, tódź (1999
    • (1999)
    • Sroczyński, D.1    Thesis, D.2
  • 24
    • 0142079122 scopus 로고    scopus 로고
    • Chimia 1997, 51, 432.
    • (1997) Chimia , vol.51 , pp. 432
  • 36
    • 68949207396 scopus 로고    scopus 로고
    • PCMODEL V 8.5, Molecular Modeling Software for Windows Operating System, Apple Macintosh OS, Linux and Unix, Serena Software, Box 3076, Bloomington, IN 47402-53076 USA, August.
    • PCMODEL V 8.5, Molecular Modeling Software for Windows Operating System, Apple Macintosh OS, Linux and Unix, Serena Software, Box 3076, Bloomington, IN 47402-53076, USA, August 2003
    • (2003)
  • 56
    • 68949216654 scopus 로고    scopus 로고
    • PLATON A Multipurpose Crystallographic Tool Version 230203, Utrecht University, Utrecht, The Netherlands
    • A. L. Spek, PLATON, A Multipurpose Crystallographic Tool, Version 230203, Utrecht University, Utrecht, The Netherlands, 2003, www.cryst.chem.uu.nl/platon
    • (2003)
    • Spek, A.L.1
  • 57
    • 68949211393 scopus 로고    scopus 로고
    • This is a standard DFT GIAO methodology applied for medium-sized low- polar molecules analyzed in apolar solutions, see e.g References 8, 9 and
    • This is a standard DFT GIAO methodology applied for medium-sized low- polar molecules analyzed in apolar solutions, see e.g. References 8, 9 and 57- 59
  • 61
    • 68949209342 scopus 로고    scopus 로고
    • note
    • 5+ABCD (17.5:22.5:44:16). The latter finding suggests that the uncertainty of such a GIAO-supported valuation of the compositions of these kinds of complex cationic mixtures in an aqueous medium is about 10-15%
  • 62
    • 10944262432 scopus 로고    scopus 로고
    • For ONIOM-GIAO calculations, see e.g., and references therein
    • For ONIOM-GIAO calculations, see e.g., A. Zheng, M. Yang, Y. Yue, C. Ye, F. Deng, Chem. Phys. Lett. 2004, 399, 172-176 and references therein.
    • (2004) Chem. Phys. Lett. , vol.399 , pp. 172-176
    • Zheng, A.1    Yang, M.2    Yue, Y.3    Ye, C.4    Deng, F.5
  • 65
    • 68949221135 scopus 로고    scopus 로고
    • unpublished results
    • R. B. Nazarski, unpublished results
    • Nazarski, R.B.1
  • 66
    • 68949213246 scopus 로고    scopus 로고
    • C corrections seems to be very well in agreement with an electronegativity of both heteroatoms considered
    • Analysis of data δCalcd classically GIAO predicted for the lowest- energy conformer of free amine 2 at the HF/6-31G** and DFT B3LYP/6- 31G* levels suggests that in the former case about 3 ppm correction should be used for all C atoms adjacent to the amino-N atoms, to bring original GIAO HF level predictions into a better agreement with experiment.64 An analogous 'oxygen- correction' term (δC-O of +7 ppm per one ether-type oxygen atom) was previously proposed for the O-bearing carbon atoms at the same HF/6-31G** level.42 The magnitude of these dC corrections seems to be very well in agreement with an electronegativity of both heteroatoms considered
  • 67
    • 68949203834 scopus 로고    scopus 로고
    • See also literature cited in Reference [25]
    • See also literature cited in Reference [25]
  • 68
    • 68949202550 scopus 로고    scopus 로고
    • An arbitrary atom labeling used throughout this work (Fig. 1) was forced by software applied for final visualization of the computed structures
    • An arbitrary atom labeling used throughout this work (Fig. 1) was forced by software applied for final visualization of the computed structures
  • 71
    • 68949213247 scopus 로고    scopus 로고
    • i + b to mathematically define these relations. For details see note 16 in Reference [43]
    • The Pearson correlation coefficient value r was used to measure a strength of relationships δobsd - f (δCalcd/corr), and the linear regression equation of the type yi - a x xi + b to mathematically define these relations. For details see note 16 in Reference [43]
  • 72
    • 68949206662 scopus 로고    scopus 로고
    • The pentaprotonated (full protonation) state of pentamine 2 at pH 0.24 was assumed
    • The pentaprotonated (full protonation) state of pentamine 2 at pH 0.24 was assumed
  • 73
    • 68949208787 scopus 로고    scopus 로고
    • In the used notation, conformers from A to D ofH525 were ordered according to their classical (gas-phase) total electronic energies Eel. The same convention was applied in further part of this work
    • In the used notation, conformers from A to D ofH525 were ordered according to their classical (gas-phase) total electronic energies Eel. The same convention was applied in further part of this work
  • 75
    • 0000394590 scopus 로고    scopus 로고
    • J. M. Harrowfield, H. Miyamae, T. M. Shand, B. W. Skelton, A. A. Soudi, A. H. White
    • J. M. Harrow/field, H. Miyamae, T. M. Shand, B. W. Skelton, A. A. Soudi, A. H. White, Aust. J. Chem. 1996, 49, 1051-1066
    • (1996) Aust. J. Chem. , vol.49 , pp. 1051-1066
  • 79
    • 68949212507 scopus 로고
    • +], i = 1 ∼n, by using general formulas given in J. Inczédy
    • D. Sroczyński, unpublished work.21 PlotPhi, The C computer program generating distribution plots of the species HnBn+ (where B = any n-protic base) according to the stepwise macroscopic protonation constants KHi-/+1 = [HiBi+]/[Hi- 1B(/-1)+][H+], i = 1 ∼n, by using general formulas given in J. Inczédy, Analytical Applications of Complex Equ l br a, E. Horwood, Ltd., Chichester, 1976, Chapter 1
    • (1976) Analytical Applications of Complex Equlbra E. Horwood, Ltd., Chichester. Chapter 1
    • Sroczyński, D.1
  • 80
    • 4444260564 scopus 로고    scopus 로고
    • See, e.g., Z. Szakács, M. Kraszni, B. Noszál
    • See, e.g., Z. Szakács, M. Kraszni, B. Noszál, Anal. Bional. Chem. 2004, 378, 1428-1448 and references therein
    • (2004) Anal. Bional. Chem. , vol.378 , pp. 1428-1448
  • 81
    • 68949211392 scopus 로고    scopus 로고
    • 13C lines found under such experimental conditions (see Figs 1 and S1) were tentatively assumed as an indicative of its high concentration
    • 13C lines found under such experimental conditions (see Figs 1 and S1) were tentatively assumed as an indicative of its high concentration.
  • 82
    • 68949206661 scopus 로고    scopus 로고
    • This kind of interaction was found in gross forms of the alkaline- region scorpiand systems H"2"+ (0 ≤ n ≤ 2). See Reference [64].
    • This kind of interaction was found in gross forms of the alkaline- region scorpiand systems H"2"+ (0 ≤ n ≤ 2). See Reference [64].


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.