72011-23-5Relevant articles and documents
Solid state and solution stereochemistry of crown ethers and models. ortho-Dimethoxydiphenyl ether and related dibenzo-15-crown-5 and tetrabenzo-30-crown-10 ethers as studied by X-ray crystallography and 1H and 13C NMR spectroscopy
Buchanan, G. W.,Rodrigue, A.,Bourque, K.,Chiverton, A. C.,Castleden, I. R.,Fortier, S.
, p. 1218 - 1224 (2007/10/02)
Solid phase 45.3 MHz 13C NMR spectra of ortho-dimethoxydiphenyl ether, 1, dibenzo-15-crown-5-ether, 2, and tetrabenzo-30-crown-10 ether, 3, have been obtained.Chemical shift trends are discussed in terms of the asymmetric units and structural features available from X-ray crystallographic data.Comparison with solution 13C spectra are made.The crystal structures of 1 and 3 were determined by X-ray diffraction at room temperature. 1 crystallizes in space group P21/a with a = 13.366(1), b = 8.230(1), c = 12.303(1) Angstroem, β = 116.63(1) deg, Z = 4. 3 crystallizes in space group P21/c with a = 7.903(1), b = 26.337(2), c = 7.852(1) Angstroem, β = 97.28(1) deg, Z = 2.The structures were solved by direct methods and refined by full-matrix least squares to residuals of 0.055 using 1727 reflections for 1 and of 0.042 using using 2590 reflections for 3.
