Comprehensive analysis of C–H⋯π(alkyne) interactions in the crystal packing of diastereomers of 1,2-di(7′-methoxynaphth-1′-yl)-3,6-di(4′′- n -propylphenylethynyl)benzene

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An exceptional example of multiple C–H⋯π(alkyne) contacts has been discovered in the crystal packing of the syn -diastereomeric conformer of 1,2-di(7′-methoxynaphth-1′-yl)-3,6-di(4′′- n -propylphenylethynyl)benzene ( syn -1).