中国物理B ›› 2019, Vol. 28 ›› Issue (1): 16104-016104.doi: 10.1088/1674-1056/28/1/016104

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

High-pressure-induced phase transition in cinchomeronic acid polycrystalline form-I

Ting-Ting Yan(颜婷婷), Dong-Yang Xi(喜冬阳), Jun-Hai Wang(王俊海), Xu-Feng Fan(樊旭峰), Ye Wan(万晔), Li-Xiu Zhang(张丽秀), Kai Wang(王凯)   

  1. 1 School of Science, Shenyang Jianzhu University, Shenyang 110168, China;
    2 School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
    3 Analysis and Detection Technology Research Center, Shenyang Jianzhu University, Shenyang 110168, China;
    4 State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • 收稿日期:2018-11-07 修回日期:2018-11-08 出版日期:2019-01-05 发布日期:2019-01-05
  • 通讯作者: Ting-Ting Yan E-mail:yantt1120@163.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11604224, 51805336, and 11774120), the Open Project of State Key Laboratory of Superhard Materials of Jilin University, China (Grant No. 201708), the Natural Science Foundation of Liaoning Province, China (Grant No. 20180550861), the Education Department of Liaoning Province, China (Grant Nos. LJZ2016031 and LJZ2016030), and Shenyang Jianzhu University Discipline Content Education, China (Grant Nos. XKHY2-105 and XKHY2-101).

High-pressure-induced phase transition in cinchomeronic acid polycrystalline form-I

Ting-Ting Yan(颜婷婷)1, Dong-Yang Xi(喜冬阳)2, Jun-Hai Wang(王俊海)3, Xu-Feng Fan(樊旭峰)1, Ye Wan(万晔)2, Li-Xiu Zhang(张丽秀)3, Kai Wang(王凯)4   

  1. 1 School of Science, Shenyang Jianzhu University, Shenyang 110168, China;
    2 School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
    3 Analysis and Detection Technology Research Center, Shenyang Jianzhu University, Shenyang 110168, China;
    4 State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • Received:2018-11-07 Revised:2018-11-08 Online:2019-01-05 Published:2019-01-05
  • Contact: Ting-Ting Yan E-mail:yantt1120@163.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11604224, 51805336, and 11774120), the Open Project of State Key Laboratory of Superhard Materials of Jilin University, China (Grant No. 201708), the Natural Science Foundation of Liaoning Province, China (Grant No. 20180550861), the Education Department of Liaoning Province, China (Grant Nos. LJZ2016031 and LJZ2016030), and Shenyang Jianzhu University Discipline Content Education, China (Grant Nos. XKHY2-105 and XKHY2-101).

摘要:

Diamond anvil cells combined with Raman spectroscopy and angle-dispersive x-ray diffraction (ADXRD) were used to investigate the compression behavior of cinchomeronic acid (C7H5NO4, CA), a hydrogen-bonded polymorphs. The compression of form-I at approximately 6.5 GPa caused an irreversible phase transition that produced the new polymorph form-Ⅲ. Lattice and internal modes in the Raman spectra were analyzed to determine the modifications in the local environment of CA form-I molecules. The form-Ⅲ was indexed and refined to a low-symmetry triclinic structure with space group P1. The mechanism for the phase transition involved the reconstructions in the hydrogen-bonded networks in CA form-I.

关键词: phase transformations, pressure, vibrational spectroscopy, x-ray diffraction

Abstract:

Diamond anvil cells combined with Raman spectroscopy and angle-dispersive x-ray diffraction (ADXRD) were used to investigate the compression behavior of cinchomeronic acid (C7H5NO4, CA), a hydrogen-bonded polymorphs. The compression of form-I at approximately 6.5 GPa caused an irreversible phase transition that produced the new polymorph form-Ⅲ. Lattice and internal modes in the Raman spectra were analyzed to determine the modifications in the local environment of CA form-I molecules. The form-Ⅲ was indexed and refined to a low-symmetry triclinic structure with space group P1. The mechanism for the phase transition involved the reconstructions in the hydrogen-bonded networks in CA form-I.

Key words: phase transformations, pressure, vibrational spectroscopy, x-ray diffraction

中图分类号:  (Crystallographic aspects of phase transformations; pressure effects)

  • 61.50.Ks
82.80.Gk (Analytical methods involving vibrational spectroscopy) 61.05.cp (X-ray diffraction) 64.70.K (Solid-solid transitions)