~1H and ~(19)F NMR Study of Cation and Anion Motions in Guanidinium Hexafluorozirconate

M. Grottel; A. Kozak; Z. Pajak

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~1H and ~(19)F NMR Study of Cation and Anion Motions in Guanidinium Hexafluorozirconate

机译：六氟锆酸胍中阳离子和阴离子运动的〜1H和〜（19）F NMR研究

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Proton and fluorine NMR second moments and spin-lattice relaxation times of polycrystalline guanidinium hexafluorozirconate and its deuterated analogue were studied in laboratory (60 MHz) and rotating (H_1 = 20 G) frames over a wide range of temperature. An analysis of the experimental results enabled us to reveal a dynamical inequivalence of two crystallographically independent cations and an unexpected high mobility of nonspherical anion dimers. A comparison of the ions dynamics in 2:1 complex studied with the guanidinium 1:1 and 3:1 complexes has shown a significant contribution of the hydrogen bonds to the potential barriers hindering the anion reorien-tations. At low temperatures a proton motion in the hydrogen bond and at 400 K a solid-solid phase transition have been discerned.

机译：在实验室（60 MHz）和在宽温度范围内旋转（H_1 = 20 G）框架下研究了多晶六氟锆酸胍及其氘代类似物的质子和氟NMR第二矩以及自旋晶格弛豫时间。对实验结果的分析使我们能够揭示两个晶体学上独立的阳离子的动力学不等式和非球形阴离子二聚体的出乎意料的高迁移率。用胍1：1和3：1络合物研究的2：1络合物中的离子动力学比较表明，氢键对阻碍阴离子重新取向的潜在势垒有重大贡献。在低温下，已经发现氢键中的质子运动和在400 K下的固-固相变。

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《Zeitschrift fur Naturforschung. A, A journal of physical sciences》 |1996年第9期|p.991-996|共6页
作者
M. Grottel; A. Kozak; Z. Pajak;
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正文语种 eng
中图分类物理学;
关键词
NMR; ion motions; hydrogen bonds; phase transitions;

机译：核磁共振;离子运动;氢键;相变;

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1. ~1H and ~(19)F NMR Study of Cation and Anion Motions in Guanidinium Fluoroantimonates [J] . M. Grottel, A. Kozak, Z. Pajak Zeitschrift fur Naturforschung. A, A journal of physical sciences . 1995,第8期

机译：〜1H和〜（19）F NMR研究氟锑酸胍中阳离子和阴离子的运动
2. ~1H, ~aH, ~(19)F, ~(31)P, and ~(35)ClNMR Studies on Molecular Motions in Ionic Plastic Phases of Pyrrolidinium Perchlorate and Hexafluorophosphate [J] . Hiroshi Ono, Shinichi Ishimaru, Ryuichi Ikeda, Bulletin of the Chemical Society of Japan . 1999,第9期

机译：〜1H，〜aH，〜（19）F，〜（31）P和〜（35）ClNMR研究高氯酸吡咯烷鎓和六氟磷酸根在离子塑性相中的分子运动
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4. Structure and Dynamics in the Methylated Exopyridine Anthracene Rotaxane: ~(13)C, ~1H and ~(19)F Solid-State NMR studies [C] . J., T. Loontjens, T. Kidd, International winterschool/Euroconference on electronic properties of novel materials . 2000

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~1H and ~(19)F NMR Study of Cation and Anion Motions in Guanidinium Hexafluorozirconate

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