Low-temperature single-crystal Raman and neutron-diffraction study of the hydrogenous ammonium copper(II) Tutton salt and the deuterated analogue in the metastable state.


Low-temperature (15 K) single-crystal neutron-diffraction structures and Raman spectra of the salts (NX4)2[Cu(OX2)6](SO4)2, where X=H or D, are reported. This study is concerned with the origin of the structural phase change that is known to occur upon deuteration. Data for the deuterated salt were measured in the metastable state, achieved by application… (More)


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