Solid-state study of hydrazonium tartrate and deuterated hydrazonium tartrate enantiomers |
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Authors: | M Delfino JC Jacco PS Gentile DD Bray |
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Institution: | Philips Laboratories Briarcliff Manor, New York 10510 USA;Fordham University, Bronx, New York 10458 USA |
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Abstract: | A study of the crystallographic, optical, and thermochemical properties of hydrazonium tartrate and deuterated hydrazonium tartrate enantiomers is described. Crystals of the enantiomers are orthorhombic with a tetramolecular cell. The space group is P212121 with the lattice parameters a0 = 7.640 ± 0.002 Å, b0 = 13.441 ± 0.003 Å, and c0 = 7.029 ± 0.002 Å. No change in lattice parameters is observed on deuteration. Optical second harmonic powder analysis shows the crystals to be phase matchable at 1.06 μm with d2ω = 11 d2ωα-SiO2. The optical nonlinearity being unaffected by deuterium substitution is attributed to the nonlinear electronic polarizability of the hydrogen bonds. Crystals are transparent from 239 nm to 1.61 μm. Deuteration shifts the long wavelength cutoff to 2.07 μm, without affecting the band edge. |
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