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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/908
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dc.contributor.authorKhetrapal, C.L.-
dc.contributor.authorKunwar, A.C.-
dc.contributor.authorEaswaran, K.R.K.-
dc.date.accessioned2005-12-27T10:57:14Z-
dc.date.available2005-12-27T10:57:14Z-
dc.date.issued1975-
dc.identifier.citationPramana Supplement, 1975, Vol. 1, p483-494.en
dc.identifier.issn0304-4289-
dc.identifier.urihttp://hdl.handle.net/2289/908-
dc.descriptionProceedings of the international liquid crystal conference, Bangalore, 1973.en
dc.description.abstractThe PMR spectrum of N-methyl formamide dissolved in the nematic phase of 4-methoxybenzylidene-4-amino-α-methyl cinnamic acid-n-propyl ester is reported. The four interproton dipolar coup- lings are derived. Using reasonable values for the bond lengths and the bond angles, it is found that the results are consistent with the molecule having a plane of symmetry containing the fragment H.CO.NH.C. Assuming the H-CO-N fragment to be rigidly planar, this plane of symmetry may ' effectively' arise also from two rapidly interconverting conformations in which the remaining two bonds meeting at the nitrogen atom are bent either below or above this plane; the angles of bend are less than 10°. Information on the mode of rotation of the methyl group about the N-C bond is derived. The results establish that N-methyl formamide contains predominantly the ' trans ' species NH and the C=O groups in the trans position ). In addition, some weak lines, which arise from the ' cis ' species ( NH and the C=O group in the cis position ) present to a much smaller extent are detected.en
dc.format.extent456146 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherIndian Academy of Sciences, Bangalore, India.en
dc.rightsIndian Academy of Sciences, Bangalore, India.en
dc.titlePMR studies on N-methyl formamide oriented in a liquid crystalline nematic phaseen
dc.typeArticleen
Appears in Collections:Research Papers (SCM)

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