Ultrasonic, piezoelectric and dielectric investigations of (−)-2-α-methylbenzylamino-5-nitropyridine

Sandra Gilmour Department of Pure and Applied Chemistry, Thomas Graham Building, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, 91109, USA

Richard A. Pethrick Department of Pure and Applied Chemistry, Thomas Graham Building, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland

David Pugh Department of Pure and Applied Chemistry, Thomas Graham Building, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland

John N. Sherwood Department of Pure and Applied Chemistry, Thomas Graham Building, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland

Abstract

Ultrasonic, piezoelectric and dielectric measurements on single crystals of (–)-2-a-α-methylbenzylamino-5-nitropyridine (MBANP) are reported. Longitudinal and transverse velocity measurements in six crystal directions were used to calculate the 13 elastic constants. Dielectric measurements were carried out in four directions and compared with refractive index measurements carried out at optical frequencies. MBANP exhibited piezoelectric coefficients of similar magnitude to those found in lithium niobate. These data are discussed in terms of the intermolecular interactions occurring in the crystal structure.

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Ultrasonic, piezoelectric and dielectric investigations of (−)-2-α-methylbenzylamino-5-nitropyridine

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Ultrasonic, piezoelectric and dielectric investigations of (−)-2-α-methylbenzylamino-5-nitropyridine

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