MIPdatabase
Authors: Klabunovskii E, Smith GV, Zsigmond A
Publication date: 2006
Chapter title: Asymmetric adsorption on minerals.
Chapter number: 1
Page numbers: 1-29.
DOI: 10.1007/978-1-4020-4296-6_1
Book title: Heterogeneous Enantioselective Hydrogenation
Editors: Klabunovskii E, Smith GV, Zsigmond A
Publisher: Springer Netherlands
ISBN: 978-1-4020-4296-6
Series title: Catalysis by Metal Complexes
Volume number: 31
Abstract: Chapter 1 considers the possible relationships of earthly clays and other minerals to the origin of chirality in organic molecules. Attempts to establish experimental evidence of asymmetric adsorption on clays were unsuccessful, but the search for chirality did find naturally occurring enantiomorphic crystals like quartz. Asymmetric adsorption of organic molecules on quartz crystals such as separation of racemic mixtures, like Co or Cr complexes, alcohols and other compounds, allowed for the conclusion that quartz crystals can serve as possible sources of chirality but not of homochirality. This latter conclusion results from the finding that all studied locations of quartz crystals contain equal amounts of d- and l-forms. The preparations of synthetic adsorbents such as imprinting silica gels are also considered. More than 130 references are analyzed
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