Polymorphism of Merocyanine Dyes Homologues with 1,3-Diethyl-2-thiobarbituric Acid Acceptor and p‑Dimethylaminobenzene Donor and Different Polymethine Chains Connecting Them

• Published in: Crystal growth & design Vol. 20; no. 1; pp. 167 - 177
• Main Authors: Rigin, Sergei, Tillotson, John, Perry, Joseph, Khrustalev, Victor N, Bogdanov, Georgii, Timofeeva, Tatiana V
• Format: Journal Article
• Language: English
• Published: American Chemical Society 02.01.2020

The crystallization from different solvents of homologues of 1,3-diethyl-2-thiobarbituric acid and p-dimethylaminobenzene with different lengths of the polymethine bridge between donor and acceptor groups (TB­[n]) produced three pairs of polymorphs with the number of CC bonds in the chain n = 1, 3,...