Synthesis and thermal properties of salts comprising cationic bis(oxazoline)-Au^III complexes and fluorinated anions

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• 作者：Yuji Miura^a ; Tomoyuki Mochida^a ; ^{tmochida@platinum.kobe-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Satoshi Motodate^b ; Keisuke Kato^b
• 关键词：Bis(oxazoline) complexes ; Metal complexes ; Thermal properties ; Ionic liquids ; Catalytic activity
• 刊名：Polyhedron
• 出版年：2016
• 出版时间：27 July 2016
• 年：2016
• 卷：113
• 期：Complete
• 页码：1-4
• 全文大小：520 K

文摘

Salts comprising cationic bis(oxazoline) (box)-Au^III complexes and fluorinated anions were synthesized and their thermal properties were investigated. Cations that contain box ligands with butyl substituents (butyl-box) were used with either achiral-(R,S) ([1]⁺) or chiral-(S,S) ([2]⁺) configurations. [1][Tf₂N] (Tf₂N⁻ = bis(trifluoromethanesulfonyl)amide) is a solid that can also be classified as an ionic liquid (T_m = 62 °C, T_g = −11 °C). [1]X and [2]X (X = SbF₆⁻ and BF₄⁻) exhibit melting points higher than 100 °C, where [1]X exhibits a higher melting point than [2]X. A salt with an ethyl-box ligand ([3][SbF₆]) exhibits no melting up to its decomposition temperature of 267 °C. Crystal structure determination revealed that the achiral cation in [1][BF₄] has a bent structure. The potential utility of [1][Tf₂N] for catalysis was demonstrated by the catalytic formation of an acetal from an alkyne.