Reversible phase transition triggered by order–disorder transformations and distortions in dipropylammonium d-(+)-10-camphorsulfonate. Issue 16 (29th March 2016)

• Record Type: Journal Article
• Authors: Zhou, Yuelan; Chen, Tianliang; Sun, Zhihua; Zhang, Shuquan; Zhao, Sangen; Ji, Chengmin; Song, Cheng; Luo, Junhua
• Is Part Of: CrystEngComm. Volume 18:Issue 16(2016)
• Page Start: 2852
• Page End: 2856
• Publication Date: 2016-03-29
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce00237d
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Dipropylammoniumd -(+)-10-camphorsulfonate undergoes a reversible structural phase transition triggered by order–disorder transformations and distinct distortions in the dipropylammonium (DPA) cations. Abstract : Dipropylammoniumd -(+)-10-camphorsulfonate (compound1 ) was constructed from a mono-component rotator–stator type dipropylammonium cation andd -(+)-10-camphorsulfonate anion and undergoes a phase transition at 205 K. Differential scanning calorimetry curves of1 present a pair of peaks, which indicate reversible and first-order phase transition characters. Continuous changes in the dielectric constants, but with a slight anomaly near the phase transition point further confirm the occurrence of a phase transition. Single crystal X-ray diffractions illustrate that1 crystallizes in the polar space group P 21 at 130 K and 293 K. Closer inspections reveal that the partially disorder–order transformations of one propyl group in the dipropylammonium cation, as well as a distinct distortion of the terminal ethyl group, induced the structural phase transition. We believe that all these findings would spur the exploration of new structural phase transition compounds.