Sheets built from C-H...O and C-H...pi(arene) hydrogen bonds in (2RS,6SR)-N-diphenylacetyl-2,6-diphenylpiperidin-4-one and (2RS,3SR,5RS,6SR)-3,5-dimethyl-N-phenylacetyl-2,6-diphenylpiperidin-4-one.
In (2RS,6SR)-N-diphenylacetyl-2,6-diphenylpiperidin-4-one, C31H27NO2, (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...pi(arene) hydrogen bond. (2RS,3SR,5RS,6SR)-3,5-Dimethyl-2,6-diphenyl-N-phenylacetylpiperidin-4-one, C27H27NO2, (II), crystallizes with Z' = 2 in the space group P-1; 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...pi(arene) hydrogen bond.
Thanikasalam
Kanagasabapathy
K
School of Chemistry, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620 024, India.
Jeyaraman
Ramasubbu
R
Panchanatheswaran
Krishnaswamy
K
Low
John N
JN
Glidewell
Christopher
C
D002244:Carbon / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006859:Hydrogen / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry*; D013237:Stereoisomerism
D002244:Carbon; D006859:Hydrogen; D010100:Oxygen