Crystal structure of 5''-(4-chloro-benzyl-idene)-4'-(4-chloro-phen-yl)-1'-methyltri-spiro[acenapthylene-1,2'-pyrrolidine-3',1''-cyclo-hexane-3'',2'''-[1,3]dioxane]-2(1H),6''-dione.

Kuppan Chandralekha,Adukamparai Rajukrishnan Sureshbabu,Srinivasakannan Lakshmi,Deivasigamani Gavaskar

doi:10.1107/s2056989015018034

Kuppan Chandralekha, Adukamparai Rajukrishnan Sureshbabu + Show 2 more

Open Access

https://doi.org/10.1107/s2056989015018034

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Abstract

In the title compound, C36H29Cl2NO4, two spiro links connect the methyl-substituted pyrrolidine ring to the acenaphthylene and cyclohexanone rings. The cyclohexanone ring is further connected to the dioxalane ring by a third spiro junction. The five-membered ring of the acenaphthylen-1-one ring system adopts a flattened envelope conformation, with the ketonic C atom as the flap, whereas the dioxalane and pyrrolidine rings each have a twist conformation. The cyclohexenone ring assumes a boat conformation. An intramolecular C—H⋯O hydrogen-bond interaction is present. In the crystal, molecules are linked by non-classical C—H⋯O hydrogen bonds, forming chains extending parallel to the a axis.

Highlights

In the title compound, C36H29Cl2NO4, two spiro links connect the methyl-substituted pyrrolidine ring to the acenaphthylene and cyclohexanone rings
The cyclohexanone ring is further connected to the dioxalane ring by a third spiro junction
The sum of bond angles around the nitrogen atom of the pyrrolidine ring (338.4°) is in agreement with an sp3 hybridization

Summary

Introduction

C36H29Cl2NO4, two spiro links connect the methyl-substituted pyrrolidine ring to the acenaphthylene and cyclohexanone rings. Atom as the flap, whereas the dioxalane and pyrrolidine rings each have a twist conformation. Molecules are linked by non-classical C—H O hydrogen bonds, forming chains extending parallel to the a axis.

Results

Conclusion