Phase transition metal–crown ether coordination compounds tuned by metal ions. Issue 3 (9th December 2015)

• Record Type: Journal Article
• Authors: Ye, Qiong; Wang, Hui-Ting; Zhou, Lin; Kong, Li-Hui; Ye, Heng-Yun; Fu, Da-Wei; Zhang, Yi
• Is Part Of: Dalton transactions. Volume 45:Issue 3(2016)
• Page Start: 1000
• Page End: 1006
• Publication Date: 2015-12-09
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c5dt02631h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : (15-Crown-5)(BiCl3 ) and (15-crown-5)(SbCl3 ) are discovered to show phase transitions above room temperature, where the phase transition temperature relates to the metal center. Abstract : Two isostructural metal crown ether coordination compounds, (15-crown-5)(BiCl3 )1 and (15-crown-5)(SbCl3 )2, are discovered to show phase transitions above room temperature, where the phase transition temperature relates to the metal center. Compound1 crystallizes in the chiral orthorhombic space group P 21 21 21 in the low temperature phase and undergoes a reversible phase transition around 365 K to crystallize in the polar orthorhombic space group Pna 21 in the high temperature phase, accompanied by thermal and dielectric anomalies. The variable-temperature structure analyses of compound1 show that the phase transition is rooted in the conformational change of the crown ether and the displacement of the Bi cation and Cl anion.