Open AccessSheets built from C—H⋯O and C—H⋯π(arene) hydrogen bonds in (2 RS ,6 SR )‐ N ‐diphenylacetyl‐2,6‐diphenylpiperidin‐4‐one and (2 RS ,3 SR ,5 RS ,6 SR )‐3,5‐dimethyl‐ N ‐phenylacetyl‐2,6‐diphenylpiperidin‐4‐one
Author(s) -
Thanikasalam Kanagasabapathy,
Jeyaraman Ramasubbu,
Panchanatheswaran Krishnaswamy,
Low John N.,
Glidewell Christopher
Publication year - 2006
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
eISSN - 1600-5759
pISSN - 0108-2701
DOI - 10.1107/s0108270106013874
Subject(s) - hydrogen bond , ring (chemistry) , crystallography , chemistry , twist , cyclohexane conformation , ideal (ethics) , stereochemistry , molecule , mathematics , geometry , law , organic chemistry , political science
In (2 RS ,6 SR )‐ N ‐diphenylacetyl‐2,6‐diphenylpiperidin‐4‐one, C 31 H 27 NO 2 , (I), the piperidinone ring adopts an almost ideal twist–boat conformation, and the molecules are linked into sheets by a combination of one C—H⋯O hydrogen bond and one C—H⋯π(arene) hydrogen bond. (2 RS ,3 SR ,5 RS ,6 SR )‐3,5‐Dimethyl‐2,6‐diphenyl‐ N ‐phenylacetylpiperidin‐4‐one, C 27 H 27 NO 2 , (II), crystallizes with Z ′ = 2 in the space group P ; the piperidinone rings adopt an almost ideal boat conformation in one of the molecules and a conformation between boat and twist–boat in the other. The molecules of (II) are linked into sheets by a combination of five C—H⋯O hydrogen bonds and one C—H⋯π(arene) hydrogen bond.