Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， HPLC of Formula: C20H14O2, Which mentioned a new discovery about 18531-94-7
Racemic 2,2′-dihydroxy-1,1′-binaphyl and 10,10′-dihydroxy-9,9′-biphenanthryl have been resolved effectively by crystalline complexation with commercially available N-alkylcinchonidium halides.The resolved complexes were studied by X-ray diffraction methods in order to characterize the intermolecular interaction and recognition schemes.The results indicate the significance of directional hydrogen bonding and aryl-aryl interaction modes in the molecular recognition process.
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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI