Cited by 14Chemistry and Stereochemistry StudiesAnalytical Chemistry and ChromatographyCrystallography and molecular interactions

Robert Boyle's chiral crystal chemistry: Computational re‐evaluation of enantioselective adsorption on quartz

Kahr, Bart, Chittenden, Brianne, Rohl, Andrew·2006·Chirality

Abstract

While searching for early examples of interactions of organic chromophores with minerals in the context of a systematic study of the process of dyeing crystals, we came across Robert Boyle's description of an experiment that may have been evidence of the enantioselective adsorption of a natural product, carminic acid (7‐β‐d‐glucopyranosyl‐9,10‐dihydro‐3,5,6,8‐tetrahydroxy‐1‐methyl‐9,10‐dioxo‐2‐anthracenecarboxylic acid), to the chiral surfaces of α‐quartz, three centuries before such interactions became the subject of active chemical investigations. In order to determine whether Boyle did indeed observe enantioselective adsorption—albeit unbeknownst to him—we attempted to dye quartz with carminic acid according to his recipe. Quartz adsorbs carminic acid only because on heating it develops a network of microfissures that adsorb dye. This process depends on capillarity, not on specific non‐covalent interactions; there is no evidence of enantioselectivity adsorption to heated crystals or enantioselective epitaxy to unheated crystals. These failures changed the focus of our inquiry: Why have almost all attempts to demonstrate the enantioselective adsorption of additives to quartz crystal surfaces been generally confounding and equivocal? In order to answer this question, we complement our experimental historical re‐investigation with contemporary computational techniques for modeling crystal surface structure and the adsorption of additives. Minimizations of the energies associated with the adsorption of carminic acid to relaxed, hydrated d‐ and l‐quartz {10&1macr;0} surfaces are analyzed in light of quartz's abysmal record as an enantioselective stationary phase. © 2005 Wiley‐Liss, Inc. Chirality 18:127–133, 2006.

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Crossref · 10.1002/chir.20229

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  • DFT studies show modest computed differences in adsorption energies of enantiomers on quartz (on the order of 2 kcal mol−1 at best).

    “In short, the computed differences in the adsorption energies of the enantiomers are modest (on the order of 2 kcal mol À1 at best) but strongly depend on the nature of amino acids and quartz surfaces.”

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Authors
Kahr, B., Chittenden, B., & Rohl, A.
Affiliations
University of Washington (US)
Corresponding author
  • Kahr, Bart
  • Rohl, Andrew
Venue
Chirality
Publisher
Wiley
Published
2005-12-30
Volume
18
Issue
2
Pages
127-133
ISSN
  • 0899-0042 (ISSN-L)
  • 1520-636X
OpenAlex
W2067554924
Cited by
14
References
49
Citations by year
2025: 1 · 2022: 2 · 2014: 1 · 2013: 2 · 2012: 1
FWCI
0.40
Type
journal article
Language
en
Open access
closed
Locations
  • Chirality (publishedVersion)
  • PubMed (publishedVersion)
  • eSpace (Curtin University) (submittedVersion)
Funders
National Science Foundation
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Chemistry and Stereochemistry Studies
  • Physical Sciences › Chemistry › Spectroscopy › Analytical Chemistry and Chromatography
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Crystallography and molecular interactions
Keywords
Robert Boyle, enantioselective adsorption, carminic acid, alpha-quartz, capillarity, crystal surface structure, history of chemistry, chiral stationary phase
MeSH terms
Adsorption, Carmine, Computer Simulation, Crystallization, Coloring Agents, Models, Chemical, Models, Molecular, Quartz, Silicon Dioxide, Stereoisomerism

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