High-pressure-induced phase transition in cinchomeronic acid polycrystalline form-I<xref rid="cpb_28_1_016104_fn1" ref-type="fn">*</xref><fn id="cpb_28_1_016104_fn1"><label>*</label><p>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).</p></fn>

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

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).

Yan Ting-Ting^{1, †}, Xi Dong-Yang², Wang Jun-Hai³, Fan Xu-Feng¹, Wan Ye², Zhang Li-Xiu³, Wang Kai⁴

Evolution of Raman spectra at high pressures in the regions of (a) 300–710 cm⁻¹, (b) 710–1320 cm⁻¹, (c) 1350–1800 cm⁻¹, and (d) corresponding frequency shifts. υ, stretching; τ, torsion; δ, in-plane bending; γ, out of plane bending.