Photochromic 1,2-bis(2′-methyl-5′-(carboxylic acid)-3′-thienyl) perfluorocyclopentene and its Co(II) coordination polymer

Crystallization from methanol of a dithienylethene (BM-5-CATP, H2L) afforded a new single crystal (H2LMeOH), where two independent conformations, i.e. photo-inactive parallel conformation and photo-reactive anti-parallel conformation, coexisted. Coordination of Co(II) with H2L in methanol gave rise to complex 1, which displayed typical ph...More