N-Eth­yl-5-(pyrrol-1-yl)-1,8-naphthalimide

The title pyrrole derivative, C₁₈H₁₄N₂O₂, is a new fluorescent compound, the mol­ecular structure of which is stabilized by a conjugated system.

3,3,4,4,5,5-Hexafluoro-1,2-bis­(3-methyl-5-phenyl-2-thien­yl)cyclo­pent-1-ene, a new photochromic diaryl­ethene compound

In the crystal structure of the title compound, C₂₇H₁₈F₆S₂, there are two independent mol­ecules in the asymmetric unit. In the two mol­ecules, the distances between the two reactive C atoms, i.e. the ring C atoms to which the methyl groups are attached, are 3.500 (6) and 3.562 (5) Å. The dihedral angles between the thio­phene ring and the adjacent benzene rings are 7.7 (5) and 8.8 (6)° in one mol­ecule, and 6.8 (5) and 44.0 (7)° in the other.