Surface value: Scanning tunneling microscopy reveals that aryl–carbonyl assemblies form through CH⋅⋅⋅O interactions on a Pt(111) surface (see picture). The strong hydrogen bonding is activated by the chemisorption-induced polarization of the arene and is tunable by substitution on the aromatic ring. These findings are relevant to stereoselective heterogeneous and homogeneous catalysis.
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Lavoie et al. (2006) studied this question.
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