Abstract
In the title E isomer of the racemic compound, C37H32F2N2O2, the pyridinone ring adopts a twisted half-chair conformation with the N atom deviating by −0.355 (3) Å and with the methylene C atom next to octahydroindolizine moiety deviating by 0.415 (3) Å from the mean plane defined by other four atoms. In the octahydroindolizine system, the pyrrolidine ring exhibits an envelope conformation with the fused methyne C atom deviating by 0.6496 (1) Å from the mean plane defined by four other atoms, and the piperidine ring exhibits a distorted chair conformation as evident from the puckering parameters Q = 0.568 (2) Å, θ = 1.0 (2) and Φ = 256 (11)°. In the crystal, C—H⋯O interactions connect the molecules into chains along [101].
Highlights
In the title E isomer of the racemic compound, C37H32F2N2O2, the pyridinone ring adopts a twisted half-chair conformation with the N atom deviating by 0.355 (3) Å and with the methylene C atom next to octahydroindolizine moiety deviating by 0.415 (3) Å from the mean plane defined by other four atoms
The pyrrolidine ring exhibits an envelope conformation with the fused methyne C atom deviating by 0.6496 (1) Å from the mean plane defined by four other atoms, and the piperidine ring exhibits a distorted chair conformation as evident from the puckering parameters Q = 0.568 (2) Å, = 1.0 (2) and =
R -factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger
Summary
ISSN 1600-5368 rac-50 0 -(4-Fluorobenzylidene)-10 -(4-fluorophenyl)-10 0 -methyl-10 ,20 ,30 ,50 ,60 ,70 ,80 ,8a0 octahydrodispiro[acenaphthylene-1,30 indolizine-20 ,30 0 -piperidine]-2,40 0 (1H)dione. R factor = 0.046; wR factor = 0.126; data-to-parameter ratio = 19.4. In the title E isomer of the racemic compound, C37H32F2N2O2, the pyridinone ring adopts a twisted half-chair conformation with the N atom deviating by 0.355 (3) Å and with the methylene C atom next to octahydroindolizine moiety deviating by 0.415 (3) Å from the mean plane defined by other four atoms. The pyrrolidine ring exhibits an envelope conformation with the fused methyne C atom deviating by 0.6496 (1) Å from the mean plane defined by four other atoms, and the piperidine ring exhibits a distorted chair conformation as evident from the puckering parameters Q = 0.568 (2) Å, = 1.0 (2) and =. C—H O interactions connect the molecules into chains along [101]
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