Structure, Phase Transitions, and Isotope Effects in [(CH3)4N]2PuCl6
DOI: 10.1021/ACS.INORGCHEM.5B01288
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摘要: The single-crystal X-ray diffraction structure of [(CH3)4N]2PuCl6 is presented for the first time, resolving long-standing confusion and speculation regarding this compound in literature. A temperature-dependent study shows that undergoes no fewer than two phase transitions between 100 360 K. at room temperature Fd3c a = 26.012(3) A. At K, space group Fm3m, with 13.088(1) plutonium octahedra tetramethylammonium cations undergo rotative displacement, degree rotation varies temperature, giving rise to transition from Fm3m as crystal cooled. Synthesis structural studies deuterated salt [(CD3)4N]2PuCl6 suggest there an isotopic effect associated transition, revealed by changing versus protonated compound, indicating donor–acceptor ...
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