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Volumn 114, Issue 2, 2010, Pages 1207-1211

Aromaticity on the fly: Cyclic transition state stabilization at finite temperature

Author keywords

[No Author keywords available]

Indexed keywords

AB INITIO MOLECULAR DYNAMICS; AROMATICITIES; CYCLIC TRANSITIONS; DELOCALIZATIONS; DYNAMICAL TRANSITION; ELEVATED TEMPERATURE; FINITE TEMPERATURES; FREE-ENERGY CALCULATIONS; HIGH TEMPERATURE; INTRAMOLECULAR REARRANGEMENT; ON THE FLIES; PERICYCLIC REACTION; REARRANGEMENT REACTIONS; THERMAL ATOMIC MOTION; TRANSITION STATE; TRANSITION STATE THEORIES;

EID: 75249099014     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp910042r     Document Type: Article
Times cited : (13)

References (55)
  • 11
  • 19
    • 75249098369 scopus 로고    scopus 로고
    • Longer simulations and higher temperature necessarily produce fragmentation of 1 and 2. In the selected simulation time and temperature ranges, however, we have not obtained such side reactions.
    • Longer simulations and higher temperature necessarily produce fragmentation of 1 and 2. In the selected simulation time and temperature ranges, however, we have not obtained such side reactions.
  • 29
    • 15344345714 scopus 로고    scopus 로고
    • CP2K, 2000-2005, b VandeVondele, J, Krack, M, Mohamed, F, Parrinello, M, Chassaing, T, Hutter, J. Comput. Phys. Commun. 2005, 167, 103-128
    • (a) CP2K, 2000-2005. http://cp2k.berlios.de. (b) VandeVondele, J.; Krack, M.; Mohamed, F.; Parrinello, M.; Chassaing, T.; Hutter, J. Comput. Phys. Commun. 2005, 167, 103-128.
  • 30
    • 75249094999 scopus 로고    scopus 로고
    • Frisch, M. J, Trucks, G. W, Schlegel, H. B, Scuseria, G. E, Robb, M. A, Cheeseman, J. R, Montgomery, J. A, Jr, Vreven, T, Kuding, K. N, Burant, J. C, Millam, J. M, Iyengar, S. S, Tomasi, J, Barone, V, Mennucci, B, Cossi, M, Scalmani, G, Rega, N, Petersson, G. A, Nakatsuji, H, Hada, M, Ehara, M, Toyota, K, Fukuda, R, Hasegawa, J, Ishida, M, Nakajima, T, Honda, Y, Kitao; Nakai, H, Klene, M, Li, X, Knox, J. E, Hratchian, H. P, Cross, J. B, Bakken, V, Adamo, C, Jaramillo, J, Gomperts, R, Stratmann, R. E, Yazyev, O, Austin, A. J, Cammi, R, Pomelli, C, Octerski, J. W, Ayala, P. Y, Morokuma, K, Voth, G. A, Salvador, P, Dannenber, J. J, Zkrzewski, V. G, Dappich, S, Daniels, A. D, Strain, M. C, Farkas, O, Malick, D. K, Rabuck, A. D, Raghavachari, K, Forseman, J. B, Ortiz, J. V, Cui, Q, Baboul, A. G, Clifford, S, Cioslowski, J, Stefanov, B. B, Liu, G, Liashenko, A, Piskorz, P, Komaromi, I, Martin, R. L, Fox, D. J, Keith, T
    • Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Montgomery, J. A., Jr.; Vreven, T.; Kuding, K. N.; Burant, J. C.; Millam, J. M.; Iyengar, S. S.; Tomasi, J.; Barone, V.; Mennucci, B.; Cossi, M.; Scalmani, G.; Rega, N.; Petersson, G. A.; Nakatsuji, H.; Hada, M.; Ehara, M.; Toyota, K.; Fukuda, R.; Hasegawa, J.; Ishida, M.; Nakajima, T.; Honda, Y.; Kitao; Nakai, H.; Klene, M.; Li, X.; Knox, J. E.; Hratchian, H. P.; Cross, J. B.; Bakken, V.; Adamo, C.; Jaramillo, J.; Gomperts, R.; Stratmann, R. E.; Yazyev, O.; Austin, A. J.; Cammi, R.; Pomelli, C.; Octerski, J. W.; Ayala, P. Y.; Morokuma, K.; Voth, G. A.; Salvador, P.; Dannenber, J. J.; Zkrzewski, V. G.; Dappich, S.; Daniels, A. D.; Strain, M. C.; Farkas, O.; Malick, D. K.; Rabuck, A. D.; Raghavachari, K.; Forseman, J. B.; Ortiz, J. V.; Cui, Q.; Baboul, A. G.; Clifford, S.; Cioslowski, J.; Stefanov, B. B.; Liu, G.; Liashenko, A.; Piskorz, P.; Komaromi, I.; Martin, R. L.; Fox, D. J.; Keith, T.; Al-Laham, M. A.; Peng, C. Y.; Nanykkara, A.; Callacombe, M.; Gill, P. M. W.; Johnson, B.; Chen, W.; Wong, M. W.; Gonzalez, C.; Pople, J. A. Gaussian 03; Gaussian, Inc.: Wallingford, CT, 2004.
  • 31
    • 4243553426 scopus 로고
    • (a) Becke, A. Phys. Rev.A 1988, 38, 3098-3100.
    • (1988) Phys. Rev.A , vol.38 , pp. 3098-3100
    • Becke, A.1
  • 33
    • 75249100549 scopus 로고    scopus 로고
    • For a comparison of theory and experiment, see the Supporting Information
    • For a comparison of theory and experiment, see the Supporting Information.
  • 38
    • 75249098785 scopus 로고    scopus 로고
    • For further details, see the Supporting Information
    • For further details, see the Supporting Information.
  • 41
    • 75249105584 scopus 로고    scopus 로고
    • For 1, we have selected four temperatures from the 600 - 1250 K range, whereas for 2, five values have been chosen from the 800 - 1800 K temperature range to calculate the temperature dependence of the activation free energy. The minimum size of the intervals is 200 K, which is sufficiently large to observe the effect of the temperature.
    • For 1, we have selected four temperatures from the 600 - 1250 K range, whereas for 2, five values have been chosen from the 800 - 1800 K temperature range to calculate the temperature dependence of the activation free energy. The minimum size of the intervals is 200 K, which is sufficiently large to observe the effect of the temperature.
  • 42
    • 75249091198 scopus 로고    scopus 로고
    • Depending on the system and temperature, we have observed 625 - 1227 reactant state - TS transitions along the trajectories.
    • Depending on the system and temperature, we have observed 625 - 1227 reactant state - TS transitions along the trajectories.
  • 43
    • 75249094573 scopus 로고    scopus 로고
    • TDDFT calculations also showed that the first excited states for both 1 and 2 are >50 kcal/mol higher than the ground state at the TS at 0 K
    • TDDFT calculations also showed that the first excited states for both 1 and 2 are >50 kcal/mol higher than the ground state at the TS at 0 K. For further details, see the Supporting Information.
    • For further details, see the Supporting Information
  • 44
    • 62849084788 scopus 로고    scopus 로고
    • Free Energy Calculations: Theory and Applications in Chemisty and Biology
    • Chipot, Ch, Pohorille, A, Eds, Springer: Berlin
    • Free Energy Calculations: Theory and Applications in Chemisty and Biology; Chipot, Ch., Pohorille, A., Eds.; Springer Series in Chemical Physics 86; Springer: Berlin, 2007.
    • (2007) Springer Series in Chemical Physics , vol.86
  • 45
    • 75249107577 scopus 로고    scopus 로고
    • 0 = 1.75 Å. The selected cutoff distance is obtained from the inflexion point of the IRC curve of the rearrangement paths. For the details, see the Supporting Information.
    • 0 = 1.75 Å. The selected cutoff distance is obtained from the inflexion point of the IRC curve of the rearrangement paths. For the details, see the Supporting Information.
  • 47
    • 75249093238 scopus 로고    scopus 로고
    • We have calculated the NICS in the point obtained by shifting the center of mass of the six carbon atoms participating in the Cope reactions perpendicularly to their least-square plane by 0.5 A outward from both molecules 1 and 2. 0 K calculations showed that the variation of the NICS in this point nicely reflects the formation of the TS aromaticity. See the Supporting Information for further details
    • We have calculated the NICS in the point obtained by shifting the center of mass of the six carbon atoms participating in the Cope reactions perpendicularly to their least-square plane by 0.5 A outward from both molecules 1 and 2. 0 K calculations showed that the variation of the NICS in this point nicely reflects the formation of the TS aromaticity. See the Supporting Information for further details.
  • 48
    • 75249096474 scopus 로고    scopus 로고
    • The same behavior has been obtained for other temperatures and for bullvalene as well. See the Supporting Information for further details
    • The same behavior has been obtained for other temperatures and for bullvalene as well. See the Supporting Information for further details.
  • 53
    • 75249107689 scopus 로고    scopus 로고
    • See the Supporting Information for further details
    • See the Supporting Information for further details.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.