Journal of Chemical Crystallography

, Volume 43, Issue 4, pp 223–227

Syntheses and Crystal Structures of 1,5-Dioxaspiro[5.5]undecane-2,4-dione Derivatives

Original Paper

DOI: 10.1007/s10870-013-0408-z

Cite this article as:
Zeng, W., Li, Y. & Guo, H. J Chem Crystallogr (2013) 43: 223. doi:10.1007/s10870-013-0408-z

Abstract

The 3-(2,3,4-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 1 and 3-(3,4,5-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 2 have been synthesized and characterized by X-ray single-crystal diffraction, IR and UV–Vis. Compound 1 belongs to the orthorhombic system, space group Pna21 with a = 10.182(2) Å, b = 11.828(2) Å, c = 14.356(3) Å, α = 90°, β = 90°, γ = 90°, V = 1,729.0(6) Å3, Z = 4. Compound 2 is of Triclinic system, space group P-1 with a = 8.7807(18) Å, b = 9.4383(19) Å, c = 11.450(2) Å, α = 98.64(3)°, β = 103.28(3)°, γ = 99.44(3)°, V = 893.4(3) Å3, Z = 2. It is very interesting that there are only C–H···O and C–H···π intermolecular interaction in the 1, while there are still π···π stacking interactions except for C–H···O and C–H···π intermolecular interaction in the structure of 2.

Graphical Abstract

Two new spiro compounds, 3-(2,3,4-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 1 and 3-(3,4,5-trimethoxybenzylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione 2 have been synthesized and characterized by X-ray single-crystal diffraction, IR and UV–Vis.
https://static-content.springer.com/image/art%3A10.1007%2Fs10870-013-0408-z/MediaObjects/10870_2013_408_Figa_HTML.gif

Keywords

SynthesisCrystal structure1,5-Dioxaspiro[5.5]undecane-2,4-dioneSpiro compound

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of Chemistry, Chemical Engineering and Environmental Engineering, MicroScale Science InstituteWeifang UniversityWeifangChina