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http://dx.doi.org/10.5012/bkcs.2009.30.11.2608

X-ray Crystal Structure of Hetaryl Leuco-TAM Dyes, (2Z,2'E)-2,2'-(2-Phenyl Propane-1,3-diylidene) Bis(1,3,3-trimethyl indoline) Derivatives  

Keum, Sam-Rok (Department of Advanced Material Chemistry, Korea University)
Roh, Se-Jung (Department of Advanced Material Chemistry, Korea University)
Kim, Young-Nan (Department of Advanced Material Chemistry, Korea University)
Im, Do-Hyuck (Department of Advanced Material Chemistry, Korea University)
Ma, So-Young (Department of Advanced Material Chemistry, Korea University)
Publication Information
Bulletin of the Korean Chemical Society / v.30, no.11, 2009 , pp. 2608-2612 More about this Journal
Abstract
The unequivocal solid-state structure and stereochemistry of the hetaryl leuco-TAM dye, 2,2’-(2-phenyl propane- 1,3-diylidene) bis(1,3,3- trimethylindoline) derivatives were established using X-ray single crystal analysis. The X-ray crystal analysis showed that the (Z, E)-isomers only formed stereoselectively, with a so-called “threebladed propeller” conformation, from the reaction of a Fischer base and benzaldehyde derivatives. These isomers were stacked in a juxtaposition to form a dimer or a double dimer, adopting either a triclinic, with P-1, or monoclinic crystal system with a space group P21/n in the unit cell of the crystal.
Keywords
Hetaryl leuco-TAM dyes; Hetaryl TAM dyes; Steroselective; Three-bladed propeller conformation; Monoclinic crystal;
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