A nuclear magnetic resonance investigation of tetraselenafulvalene partially oriented in a nematic liquid crystal期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

A nuclear magnetic resonance investigation of tetraselenafulvalene partially oriented in a nematic liquid crystal

Authors:	T.C. Wong E.M. Engler

Affiliation:	Department of Chemistry, Tufts University, Medford, Mass. 02155 U.S.A.;IBM Watson Research Center, Yorktown Heights, New York 10598 U.S.A.

Abstract:	The molecular structure of tetraselenafulvalene (TSeF) dissolved in a nematic crystal solvent is determined from the PMR spectra including ⁷⁷Se satellites. The molecule is found to be either puckered in a boat form or possessing a broad potential function for the in-phase puckering motion. The dihedral angle between the SeHCCHSe and Se₂CCSe₂ plane is 15.5 ± 0.6°. The structure is in good agreement with that of the dimerized TSeF in the solid state. Some ⁷⁷Se indirect coupling constants are also determined.

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