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Volumn 121, Issue 10, 1999, Pages 2115-2122

Predicting crystalline packing arrangements of molecules that form hydrogen-bonded tapes

Author keywords

[No Author keywords available]

Indexed keywords

PIPERAZINEDIONE;

EID: 0033577316     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja983163k     Document Type: Article
Times cited : (59)

References (69)
  • 28
    • 0000293555 scopus 로고
    • Maddox, J. Nature 1988, 335, 201.
    • (1988) Nature , vol.335 , pp. 201
    • Maddox, J.1
  • 37
    • 0000776859 scopus 로고
    • Fox, D., Labes, M. M., Weissberger, A., Eds.; John Wiley & Sons: New York
    • McCrone, W. C. In Polymorphism, Fox, D., Labes, M. M., Weissberger, A., Eds.; John Wiley & Sons: New York, 1965; Vol. 2, pp 725-767.
    • (1965) Polymorphism , vol.2 , pp. 725-767
    • McCrone, W.C.1
  • 42
    • 13044307928 scopus 로고    scopus 로고
    • note
    • For example, torsions where the barriers of rotation are on the order of kT (0.6 kcal/mol).
  • 47
    • 13044301496 scopus 로고    scopus 로고
    • note
    • The molecular frame of reference can be conveniently represented by placing "dummy" atoms on a Cartesian axis proximate to the molecule. These dummy atoms are not included in the calculations of the energy, but their presence conveniently faciliates the molecular rotation commands in CHARMM.
  • 52
    • 13044302126 scopus 로고    scopus 로고
    • note
    • A value of 90° was chosen to allow some flexibility in the connecting hydrogen bonds.
  • 54
    • 13044298249 scopus 로고    scopus 로고
    • note
    • Cerius2 was used because it produced better hydrogen-bond geometries during its minimizations than CHARMM/QUANTA4.1.
  • 55
    • 13044308774 scopus 로고    scopus 로고
    • note
    • m for some functional groups and does not provide a sufficiently extensive range for general use among many organic compounds.
  • 57
    • 0009447554 scopus 로고
    • Spek, A. L., Ed.; University of Utrecht: Utrecht, Netherlands
    • Spek, A. L. In Platon 92; Spek, A. L., Ed.; University of Utrecht: Utrecht, Netherlands, 1992.
    • (1992) Platon 92
    • Spek, A.L.1
  • 60
    • 13044303393 scopus 로고    scopus 로고
    • note
    • Powder diffraction patterns were calculated using Cerius2 from Molecular Simulations/Biosym.
  • 61
    • 13044314995 scopus 로고    scopus 로고
    • note
    • E.g., the difference plot for the C5DKP structure before and after energy minimization shows enormous differences, the Rp was 62%, yet the structures are visually very close (shown in the Supporting Information).
  • 62
    • 13044299785 scopus 로고
    • Giacovazzo, C., Ed.; Oxford University Press: Oxford
    • Giacovazzo, C. In Fundamentals of Crystallography; Giacovazzo, C., Ed.; Oxford University Press: Oxford, 1992; pp 109-111.
    • (1992) Fundamentals of Crystallography , pp. 109-111
    • Giacovazzo, C.1
  • 63
    • 13044314382 scopus 로고    scopus 로고
    • note
    • For example, Z = 1 for the space group P1. P1 has two symmetry operators - translation and inversion - which implies that there is one-half of a molecule for the asymmetric unit (number of operatators x molecule in the unit cell = Z). In our prediction program, Z = 1 for the space group P1; that is, one symmetry operator x one molecule for the asymmetric unit = Z.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.