Chiral crystalline hosts derived from lactic acid.* X-ray crystal structures of optically resolved and racemic host compound 1,1-diphenyl-1,2-propanediol and a 2:1 complex between optically resolved host and 3-picoline

Autor:	Edwin Weber, Claus Wimmer, Concepción Foces-Foces, Antonio L. Llamas-Saiz
Rok vydání:	1993
Předmět:	chemistry.chemical_compound Crystallography Hydrogen bond Chemistry Asymmetric carbon Stereochemistry Group (periodic table) Molecule Picoline General Chemistry Crystal structure Propanediol Lactic acid
Zdroj:	Supramolecular Chemistry. 2:215-223
ISSN:	1029-0478 1061-0278
DOI:	10.1080/10610279308038319
Popis:	The X-ray crystal structures of racemic (1) and S-1,1-diphenyl-1,2-propanediol (2), and of a 2:1 inclusion complex (3) of 2 with 3-picoline are reported. Three different binding schemes characterize the packing of these structures. Only one of the two hydroxy groups (that which is not related to the asymmetric carbon) is involved in O-H…O hydrogen bonds responsible for the formation of dimers and chains in 1 and 2, leaving the other OH group for stabilization of dimers through OH…phenyl interactions in 1 or free of interactions in 2. In the crystal structure of the chiral complex 3, the hydroxy groups link the two independent host molecules, A and B, the 3-picoline guest to the B host molecule, and a remaining one forms H-bonded chains along the c axis.
Databáze:	OpenAIRE
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