; Duan, Defang
; Wang, Run
; Liu, Dan
; Cui, Tian
; Liu, Bingbing
; Cui, Qiliang
; Zou, Bo
; Zou, Guangtian] Jilin Univ, State Ke Lab Superhard Mat, Changchun 130012, Peoples R China
; [Tang, Lingyun
; Liu, Jing] Chinese Acad Sci, Beijing Synchrotron Radiat Lab, Inst High Energy Phys, Beijing 100039, Peoples R China
Single-crystal samples of the 1:1 adduct between cyanuric acid and melamine (CA center dot M), an outstanding case of noncovalent synthesis, have been studied by Raman spectroscopy and synchrotron X-ray diffraction in a diamond anvil cell up to pressures of 15 GPa. The abrupt changes in Raman spectra around 4.4 GPa have provided convincing evidence for pressure-induced structural phase transition. This phase transition was confirmed by angle dispersive X-ray diffraction (ADXRD) experiments to be a space group change from C2/m to its subgroup P2(1)/m. On release of pressure, the observed transition was irreversible, and the new high-pressure phase was fully preserved at ambient conditions. We propose that this phase transition was due to supramolecular rearrangements brought about by changes in the hydrogen bonding networks.
Wang, K,Duan, DF,Wang, R,et al. Pressure-Induced Phase Transition in Hydrogen-Bonded Supramolecular Adduct Formed by Cyanuric Acid and Melamine[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2009,113(44):14719-14724.
Wang, K.,Duan, DF.,Wang, R.,Liu, D.,Tang, LY.,...&刘景.(2009).Pressure-Induced Phase Transition in Hydrogen-Bonded Supramolecular Adduct Formed by Cyanuric Acid and Melamine.JOURNAL OF PHYSICAL CHEMISTRY B,113(44),14719-14724.
Wang, K,et al."Pressure-Induced Phase Transition in Hydrogen-Bonded Supramolecular Adduct Formed by Cyanuric Acid and Melamine".JOURNAL OF PHYSICAL CHEMISTRY B 113.44(2009):14719-14724.