NQR and Phase Transitions of Tetramethylammonium Tetrahalogenomercurates (Ⅱ)

Hiromitsu Terao; Tsutomu Okuda; Koji Yamada; Hideta Ishihara; Alarich Weiss

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NQR and Phase Transitions of Tetramethylammonium Tetrahalogenomercurates (Ⅱ)

机译：四卤代四甲基铵的NQR和相变（Ⅱ）

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NQR and DTA revealed phase transitions in [(CH_3)_4N]_ 2HgBr_4 and [(CH_3)_4N]_2HgI_4 at 272 K and 264 K, respectively. The NQR resonance lines faded out with increasing temperature. From preliminary measurements of ~(81)Br NQR spin-lattice relaxation times and ~(199)Hg NMR a reorienta-tional motion of HgBr_4~- ions around one of their pseudo C_3 axes in the room temperature phase of [(CH_3)_4N]_2HgBr_4 is suggested.

机译：NQR和DTA分别显示在[（CH_3）_4N] _2 HgBr_4和[（CH_3）_4N] _2HgI_4中的相变分别为272 K和264K。随着温度的升高，NQR共振线逐渐消失。根据〜（81）Br NQR自旋晶格弛豫时间和〜（199）Hg NMR的初步测量，HgBr_4〜-离子在[[CH_3）_4N的室温相中围绕其伪C_3轴之一发生方向运动。建议使用] _2HgBr_4。

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来源
《Zeitschrift fur Naturforschung. A, A journal of physical sciences》 |1996年第6期|p.755-760|共6页
作者
Hiromitsu Terao; Tsutomu Okuda; Koji Yamada; Hideta Ishihara; Alarich Weiss;
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作者单位

Faculty of Integrated Arts and Sciences, Tokushima University, Minamijosanjima-cho, Tokushima 770, Japan;

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原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
(CH_3)_4N_2HgX_4; phase transitions; halogen NQR; ~(199)Hg NMR;

机译：[（CH_3）_4N] _2HgX_4;相变;卤素NQR;〜（199）Hg NMR;

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机译：卤化物钙钛矿四甲基三氯锗酸（II）的低温相变序列及其调制度δ相的结构
2. NQR STUDY OF MOLECULAR DYNAMICS IN TETRAMETHYLAMMONIUM HYDROGEN BIS(DIFLUOROCHLOROACETATE) [J] . Zdanowskafraczek M. Journal of Molecular Structure . 1995,第2期

机译：叔甲基铵氢双（氯代乙酰乙酸）中分子动力学的NQR研究
3. Phase Transitions in Tetramethylammonium Hexachlorometalate Compounds (TMA) ₂2 MCl ₆6 (M = U, Np, Pt, Sn, Hf, Zr) [J] . Autillo Matthieu, Wilson Richard E. European journal of inorganic chemistry . 2017,第41期

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4. Crossover from Valence Phase Transition to Kondo Behavior in Yb_(1-x)Ce_xInCu_4 as Probed by Cu NQR [C] . A. A. Gippius, K. S. Okhotnikov, P. A. Anferova, Moscow International Symposium on Magnetism . 2009

机译：从价阶段过渡到YB_（1-x）CE_XINCU_4中的Kondo行为的交叉，如CU NQR探查
5. Metal-Insulator Transition and Quantum Phases in Transition Metal Oxides [D] . Chen, Ru 2014

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6. Inhibition of the sodium-translocating NADH-ubiquinone oxidoreductase Na+-NQR decreases cholera toxin production in Vibrio cholerae O1 at the late exponential growth phase [O] . Yusuke Minato, Sara R. Fassio, Rylan L. Reddekopp, -1

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7. The NQR and DTA Study of Phase and Polymorphic Transitions of Bromocadmate and Bromozincate Complexes [O] . Nakashima Michio, Ishihara Hideta, Professor emeritus Saga University, 2016

机译：NQR和DTA研究溴代镉酸盐和溴代锌酸盐络合物的相态和多态转变
8. A Tl and Tl(p) Study of Molecular Motion and PHASE Transitions in the Tetramethylammonium Halides. [R] . albert, s. gutowsky, h. s. 1972

机译：Tl和Tl（p）研究四甲基卤化铵中的分子运动和相变。

NQR and Phase Transitions of Tetramethylammonium Tetrahalogenomercurates (Ⅱ)

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