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Volumn 11, Issue 5, 2011, Pages 1957-1965

Kinetics and thermodynamics of efficient chiral symmetry breaking in nearly racemic mixtures of conglomerate crystals

(1)  Skrdla, Peter J a  

a NONE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CHIRAL SYMMETRY; DISPERSIVE KINETICS; FIRST-ORDER; HOMOCHIRALITY; KINETICS AND THERMODYNAMICS; PHASE TRANSFORMATION; RACEMIC MIXTURES; SECONDARY NUCLEATION; SOLUTION PHASE;

EID: 79957930576     PISSN: 15287483     EISSN: 15287505     Source Type: Journal    
DOI: 10.1021/cg200116e     Document Type: Article
Times cited : (30)

References (70)
  • 12
    • 79957969464 scopus 로고    scopus 로고
    • those ∼85% of cases, the handedness of the molecules does not appear to affect their ability to interact with each other in the crystal packing arrangement
    • In those ∼85% of cases, the handedness of the molecules does not appear to affect their ability to interact with each other in the crystal packing arrangement.
  • 17
    • 79957947372 scopus 로고    scopus 로고
    • rate-limiting step of a multistep/complex process defines the critical mechanism responsible for producing the observed kinetics
    • The rate-limiting step of a multistep/complex process defines the critical mechanism responsible for producing the observed kinetics.
  • 33
    • 79957940328 scopus 로고    scopus 로고
    • Adding a small amount of one dissolved enantiomer to the solution phase triggers the process to evolve in favor of the opposite chirality "a small initial enantiomeric excess.may be induced by minute amounts of chiral species present in the solution". In contrast, a starting excess of crystals of a particular enantiomer should drive the enrichment toward the same handedness in the solid-state, due to the increased probability of secondary nucleation on that phase. In either case, the imbalance perturbs the system chemical potential, thus providing the initial driving force for the enantioenrichment
    • Adding a small amount of one dissolved enantiomer to the solution phase triggers the process to evolve in favor of the opposite chirality ("a small initial enantiomeric excess...may be induced by minute amounts of chiral species present in the solution"). In contrast, a starting excess of crystals of a particular enantiomer should drive the enrichment toward the same handedness (in the solid-state), due to the increased probability of secondary nucleation on that phase. In either case, the imbalance perturbs the system chemical potential, thus providing the initial driving force for the enantioenrichment.
  • 39
    • 79957946071 scopus 로고    scopus 로고
    • While the arguments presented in ref 37 have merit for most homogeneous reactions monitored on the macroscopic scale, if there were no out-of-equilibrium relaxation effects e.g., molecular dynamics, observed on the microscopic level, which impart heterogeneity to the 8, 31, 32 system, then one would not observe dispersive kinetics in nature
    • While the arguments presented in ref 37 have merit for most homogeneous reactions monitored on the macroscopic scale, if there were no out-of-equilibrium relaxation effects (e.g., molecular dynamics, observed on the microscopic level), which impart heterogeneity to the 8, 31, 32 system, then one would not observe dispersive kinetics in nature.
  • 44
    • 79957948835 scopus 로고    scopus 로고
    • 26 seems valid only if the dissolution/recrystallization is sufficiently rapid such that the solids serve solely as "molecular reservoirs" for the solution phase racemization
    • 26 seems valid only if the dissolution/recrystallization is sufficiently rapid such that the solids serve solely as "molecular reservoirs" for the solution phase racemization.
  • 55
    • 79957946946 scopus 로고    scopus 로고
    • Furthermore, eq 8 in ref 26 results in a "catastrophe" as t → ∞; eq 2/eq 6 in this manuscript do not
    • Furthermore, eq 8 in ref 26 results in a "catastrophe" as t → ∞; eq 2/eq 6 in this manuscript do not.
  • 62
    • 79957947778 scopus 로고    scopus 로고
    • ref 56, the PSDs were modeled using a Gaussian distribution that likely does not support any single rate-limiting mechanism
    • In ref 56, the PSDs were modeled using a Gaussian distribution that likely does not support any single rate-limiting mechanism.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.