Crystal structures of a series of 6-aryl-1,3-diphenyl­fulvenes

The synthesis and crystal structures of a series of 6-aryl­fuvlenes (fulvene is 5-methyl­idene­cyclo­penta-1,3-diene) with varying methyl­ation patterns on the 6-phenyl substituent are reported, namely 6-(3-methyl­phen­yl)-1,3-di­phenyl­fulvene (C(25)H(20)), 6-(4-methyl­phen­yl)-1,3-di­phenyl­fulvene (C(25)H(20)), 6-mesityl-3-di­phenyl­fulvene (C(27)H(24)) and 6-(2,3,4,5,6-penta­methyl­phen­yl)-1,3-di­phenyl­fulvene (C(29)H(28)). The bond lengths are typical of those observed in related fulvenes. A network of C—H⋯π ring inter­actions consolidates the packing in each structure.