title: A novel liquid crystalline system for partial alignment of polar organic molecules.
abstract: A new system for partial alignment of polar organic molecules to measure residual dipolar couplings in NMR consists of a 1:1 or a 2:1 mixture of water and DMSO including 3-13% n-alkylpentaethylene glycol as the surfactant. Temperature and concentration dependence of the alignment system are investigated and, as examples, the 13C,1H residual dipolar couplings for the amino acid methionine 1 and for an alpha-methylene-gamma-butyrolactone 2 have been obtained and are compared with those obtained from the alignment media consisting of n-alkylpentaethylene glycol, n-alkyl alcohol and water.
authors.affiliation: Department of Chemistry, Kazan State University, Kazan, Russian Federation.
authors.forename: V V
authors.initials: VV
authors.lastname: Klochkov
authors.forename: A V
authors.initials: AV
authors.lastname: Klochkov
authors.forename: C M
authors.initials: CM
authors.lastname: Thiele
authors.forename: S
authors.initials: S
authors.lastname: Berger
mesh_terms: D015107:4-Butyrolactone / Q000737:chemistry; D002247:Carbon Isotopes; D003460:Crystallization; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D019855:Ethylene Glycol / Q000737:chemistry; D008715:Methionine / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods*
chemical_list: D002247:Carbon Isotopes; D008715:Methionine; D019855:Ethylene Glycol; D015107:4-Butyrolactone; D004121:Dimethyl Sulfoxide