메뉴 건너뛰기




Volumn 130, Issue 10, 2009, Pages

Water dynamics on the hydrate lattice of a tetrabutyl ammonium bromide semiclathrate

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; DEUTERIUM; DIELECTRIC SPECTROSCOPY; DYNAMICS; HYDRATES; HYDRATION; MOLECULES; NUCLEAR MAGNETIC RESONANCE; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; SPIN DYNAMICS;

EID: 62549142256     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.3081897     Document Type: Article
Times cited : (17)

References (52)
  • 1
    • 0344443175 scopus 로고    scopus 로고
    • 0028-0836 10.1038/nature02135.
    • E. D. Sloan, Nature (London) 0028-0836 10.1038/nature02135 426, 353 (2003).
    • (2003) Nature (London) , vol.426 , pp. 353
    • Sloan, E.D.1
  • 16
    • 33749159474 scopus 로고    scopus 로고
    • 0163-1829 10.1103/PhysRevB.72.014304.
    • B. Geil, T. M. Kirschgen, and F. Fujara, Phys. Rev. B 0163-1829 10.1103/PhysRevB.72.014304 72, 014304 (2005).
    • (2005) Phys. Rev. B , vol.72 , pp. 014304
    • Geil, B.1    Kirschgen, T.M.2    Fujara, F.3
  • 22
    • 0009656861 scopus 로고
    • 0021-9606 10.1063/1.456933.
    • R. Böhmer, J. Chem. Phys. 0021-9606 10.1063/1.456933 91, 3111 (1989).
    • (1989) J. Chem. Phys. , vol.91 , pp. 3111
    • Böhmer, R.1
  • 24
    • 0002781313 scopus 로고
    • 1064-1858 10.1006/jmra.1995.1149, () (We used solid-echo delays Δ12 =5 μs and Δ34 =15 μs.).
    • D. Schaefer, J. Leisen, and H. W. Spiess, J. Magn. Reson., Ser. A 1064-1858 10.1006/jmra.1995.1149 115, 60 (1995) (We used solid-echo delays Δ12 =5 μs and Δ34 =15 μs.).
    • (1995) J. Magn. Reson., Ser. A , vol.115 , pp. 60
    • Schaefer, D.1    Leisen, J.2    Spiess, H.W.3
  • 26
    • 0000938413 scopus 로고
    • 0301-0104 10.1016/0301-0104(74)85062-7, ();, J. Magn. Reson. 39, 217 (1980). 1090-7807
    • H. W. Spiess, Chem. Phys. 0301-0104 10.1016/0301-0104(74)85062-7 6, 217 (1974); U. Pschorn and H. W. Spiess, J. Magn. Reson. 39, 217 (1980). 1090-7807
    • (1974) Chem. Phys. , vol.6 , pp. 217
    • Spiess, H.W.1    Pschorn, U.2    Spiess, H.W.3
  • 29
    • 0000769093 scopus 로고    scopus 로고
    • 1089-5639 10.1021/jp973461o.
    • M. Vogel and E. Rössler, J. Phys. Chem. A 1089-5639 10.1021/jp973461o 102, 2102 (1998).
    • (1998) J. Phys. Chem. A , vol.102 , pp. 2102
    • Vogel, M.1    Rössler, E.2
  • 31
    • 0003561703 scopus 로고
    • in, edited by P. Diehl, E. Fluck, H. Günther, P. Kosfeld, and J. Seelig (Springer, Berlin), Vol..
    • G. Fleischer and F. Fujara, in NMR-Basic Principles and Progress, edited by, P. Diehl, E. Fluck, H. Günther, P. Kosfeld, and, J. Seelig, (Springer, Berlin, 1994), Vol. 30.
    • (1994) NMR-Basic Principles and Progress , vol.30
    • Fleischer, G.1    Fujara, F.2
  • 33
    • 62549153222 scopus 로고    scopus 로고
    • For the sII structure Z (tp) (Ref.) is only marginally different from that for isotropic motion.
    • For the sII structure Z (tp) (Ref.) is only marginally different from that for isotropic motion.
  • 35
    • 0000854512 scopus 로고    scopus 로고
    • 1063-651X 10.1103/PhysRevE.56.730.
    • A. Heuer, Phys. Rev. E 1063-651X 10.1103/PhysRevE.56.730 56, 730 (1997).
    • (1997) Phys. Rev. e , vol.56 , pp. 730
    • Heuer, A.1
  • 36
    • 62549155868 scopus 로고    scopus 로고
    • For more detailed descriptions and other applications of four-time stimulated-echo functions the reader is referred to, e.g., Refs. and.
    • For more detailed descriptions and other applications of four-time stimulated-echo functions the reader is referred to, e.g., Refs. and.
  • 38
    • 62549162696 scopus 로고    scopus 로고
    • Despite their similar appearance the F4 (tm2) and the G4 (tm3) functions differ in a number of respects. In physical terms the variation in different mixing times implies that rather different aspects of the dynamics of the water molecules are probed. This is briefly explained in the text for simple examples, but dealt with more fully, e.g., in Refs. and. While F4 the evolution frequencies ω1, ω2, ω3, and ω4 will in general all differ for a given ensemble of spins. In the present implementation of G4 the frequencies ω2 and ω3 are identical owing to the very short tm2, c.f. the caption Fig.. The fact that in Eq. a term cos [(ω3 - ω4) t] appears which for G4 is replaced by cos (ω3 tp) cos (ω4 tp) may be considered as a technical detail, which however is important because it ensures that these functions can be properly normalized using the (unavoidable but independently measured) longitudinal relaxation of magnetization.
    • Despite their similar appearance the F4 (tm2) and the G4 (tm3) functions differ in a number of respects. In physical terms the variation in different mixing times implies that rather different aspects of the dynamics of the water molecules are probed. This is briefly explained in the text for simple examples, but dealt with more fully, e.g., in Refs. and. While F4 the evolution frequencies ω1, ω2, ω3, and ω4 will in general all differ for a given ensemble of spins. In the present implementation of G4 the frequencies ω2 and ω3 are identical owing to the very short tm2, c.f. the caption Fig.. The fact that in Eq. a term cos [(ω3-ω4) tp] appears which for G4 is replaced by cos (ω3 tp) cos (ω4 tp) may be considered as a technical detail, which however is important because it ensures that these functions can be properly normalized using the (unavoidable but independently measured) longitudinal relaxation of magnetization.
  • 43
    • 33750563860 scopus 로고    scopus 로고
    • 1063-651X 10.1103/PhysRevE.74.041504, () (This estimate is based on the existence of a quasi-isotropic process for which tetrahedral reorientations are an example.).
    • B. Geil, G. Diezemann, and R. Böhmer, Phys. Rev. E 1063-651X 10.1103/PhysRevE.74.041504 74, 041504 (2006) (This estimate is based on the existence of a quasi-isotropic process for which tetrahedral reorientations are an example.).
    • (2006) Phys. Rev. e , vol.74 , pp. 041504
    • Geil, B.1    Diezemann, G.2    Böhmer, R.3
  • 46
    • 0037855020 scopus 로고
    • The situation regarding the translational motion of the H2 O molecules in THF clathrate hydrate seems less clear. From a proton NMR investigation an energy barrier of Etrans ≈50 kJ/mol was estimated [, ()], while in Ref. a value of 12 kJ/mol was given. For the translational water motion in ice- Ih a value of 50 kJ/mol is reported in Ref.. 0022-3654
    • The situation regarding the translational motion of the H2 O molecules in THF clathrate hydrate seems less clear. From a proton NMR investigation an energy barrier of Etrans ≈50 kJ/mol was estimated [S. K. Garg, D. W. Davidson, and J. A. Ripmeester, J. Magn. Reson. 15, 295 (1974)], while in Ref. a value of 12 kJ/mol was given. For the translational water motion in ice- Ih a value of 50 kJ/mol is reported in Ref.. 0022-3654
    • (1974) J. Magn. Reson. , vol.15 , pp. 295
    • Garg, S.K.1    Davidson, D.W.2    Ripmeester, J.A.3
  • 47
    • 8344268627 scopus 로고    scopus 로고
    • 0021-9606 10.1063/1.2217945, ();, J. Chem. Phys. 0021-9606 10.1063/1.2217945 125, 054905 (2006).
    • P. M. Cereghetti, R. Kind, and J. S. Higgins, J. Chem. Phys. 0021-9606 10.1063/1.2217945 121, 8068 (2004); M. Vogel and T. Torbrügge, J. Chem. Phys. 0021-9606 10.1063/1.2217945 125, 054905 (2006).
    • (2004) J. Chem. Phys. , vol.121 , pp. 8068
    • Cereghetti, P.M.1    Kind, R.2    Higgins, J.S.3    Vogel, M.4    Torbrügge, T.5
  • 50
    • 62549132610 scopus 로고    scopus 로고
    • To test this conjecture we performed preliminary C 13 line shape measurements (not shown). So far, we find no indication of significant line shape changes in the temperature range in which the deuteron spin-lattice relaxation turns from exponential to nonexponential.
    • To test this conjecture we performed preliminary C 13 line shape measurements (not shown). So far, we find no indication of significant line shape changes in the temperature range in which the deuteron spin-lattice relaxation turns from exponential to nonexponential.
  • 51
    • 0000902444 scopus 로고
    • This is the value for TBAF clathrate hydrate, see Table IV of, in, edited by F. Franks (Plenum, New York, London), Vol.
    • This is the value for TBAF clathrate hydrate, see Table IV of D. W. Davidson, in Water-A Comprehensive Treatise, edited by, F. Franks, (Plenum, New York, London, 1973), Vol. 2, pp. 115-234.
    • (1973) Water-A Comprehensive Treatise , vol.2 , pp. 115-234
    • Davidson, D.W.1
  • 52
    • 17744412209 scopus 로고    scopus 로고
    • 0031-9007 10.1103/PhysRevLett.83.4337.
    • R. Richert and R. Böhmer, Phys. Rev. Lett. 0031-9007 10.1103/PhysRevLett.83.4337 83, 4337 (1999).
    • (1999) Phys. Rev. Lett. , vol.83 , pp. 4337
    • Richert, R.1    Böhmer, R.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.