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- W2002103959 abstract "Abstract Abstract-The determination of the structure of molecules oriented in the nematic phase of liquid crystals for relatively large bicyclic aromatic compounds has been extended to phthalazine. The spectrum of the molecule is investigated in the nematic phase of a mixture of 80% 4-ethoxybenzylidene-4-n-butyl aniline and 20% o-carbo butoxy-4-oxybenzoic acid ethoxy phenyl ester. Values of the indirect spin-spin coupling constants are determined. The geometry of the proton skeleton of the molecule is iteratively computed. The phenyl part of the molecule has been found to be distorted compared to the benzene structure. The distance between the protons in the pyridazine part of the ring is found to be smaller than the para H-H distance in the phenyl part. The MolecuIe orients preferentially with its C,-axis paraIlel to the direction of the magnetic field (SC2 = 0.1864). The axis normal to the plane has the most negative 8-value (- 0.1703)." @default.
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- W2002103959 date "1972-06-01" @default.
- W2002103959 modified "2023-09-24" @default.
- W2002103959 title "NMR Spectra of Bicyclic Compunds Oriented in the Nematic Phase. Part II. The Spectrumof Phthalazine" @default.
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- W2002103959 doi "https://doi.org/10.1080/15421407208083835" @default.
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