Abstract
In the title compound, C39H38N2O4, the pyridinone ring adopts a twisted half-chair conformation with the N atom deviating by 0.3304 (1) and with the methylene C atom adjacent to the octahydroindolizine unit deviating by 0.444 (3) Å from the mean plane defined by the other four atoms. In the octahydroindolizine system, the pyrrolidine ring exhibits an envelope conformation, with the fused methyne C atom deviating by 0.6315 (1) Å from the mean plane defined by the other four atoms, and the piperidine ring exhibits a distorted chair conformation, as reflected in the puckering parameters Q = 0.568 (4) Å, θ = 1.5 (4) and ϕ = 161 (16)°. In the crystal pairs of weak C—H⋯O interactions form centrosymmetric dimers, which are further connected by C—H⋯π interactions. The crystal studied was a non-merohedral twin, with a domain ratio of 0.91:0.09.
Highlights
In the title compound, C39H38N2O4, the pyridinone ring adopts a twisted half-chair conformation with the N atom deviating by 0.3304 (1) and with the methylene C atom adjacent to the octahydroindolizine unit deviating by
In the crystal pairs of weak C—H O interactions form centrosymmetric dimers, which are further connected by C—
JS and RAN thank the management of Madura College for their encouragement and support
Summary
50 0 -(4-Methoxybenzylidene)-10 -(4-methoxyphenyl)-10 0 -methyl-10 ,20 ,30 ,50 ,60 ,70 ,80 ,8a0 -octahydrodispiro[acenaphthylene1,30 -indolizine-20 ,30 0 -piperidine]2,40 0 (1H)-dione. Experimental a Department of Physics, The Madura College, Madurai 625 011, India, bDepartment of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai. 625 021, India, and cDepartment of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka. 0.444 (3) Å from the mean plane defined by the other four atoms. The pyrrolidine ring exhibits an envelope conformation, with the fused methyne C atom deviating by 0.6315 (1) Å from the mean plane defined by the other four atoms, and the piperidine ring exhibits a distorted chair conformation, as reflected in the puckering parameters Q = 0.568 (4) Å, = 1.5 (4) and ’ = 161 (16). In the crystal pairs of weak C—H O interactions form centrosymmetric dimers, which are further connected by C—. The crystal studied was a non-merohedral twin, with a domain ratio of 0.91:0.09
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