Thermal properties and crystal structures of cobalt(III)-cyclam complexes with the bis(trifluoromethanesulfonyl)amide anion (cyclam=1,4,8,11-tetraazacyclotetradecane)

被引：3
|
作者：
Oba, Yukiko [1 ]
Mochida, Tomoyuki [1 ]
机构：
[1] Kobe Univ, Grad Sch Sci, Dept Chem, Nada, Hyogo 6578501, Japan
来源：
POLYHEDRON | 2015年 / 99卷
基金：
日本学术振兴会;
关键词：
Cyclam complex; Cobalt; Thermal analysis; Crystal structure; Hydrogen bond; SCHIFF-BASE COMPLEX; IONIC LIQUIDS; THERMODYNAMIC PROPERTIES; CYCLAM COMPLEXES; NITRIC-OXIDE; ISOMERIZATION; CHLORIDE; SALTS; TF2N;
D O I：
10.1016/j.poly.2015.08.015
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The bis(trifluoromethanesulfonyl)amide anion ([Tf2N](-)) has frequently been used as a component of ionic liquids. To investigate the effect of this anion and alkyl substituents on the thermal properties of macrocyclic metal complexes, cobalt(III) cyclam complexes [Co(cyclam)Cl-2][Tf2N] and its monoalkyl derivatives were prepared (cyclam = 1,4,8,11-tetraazacyclotetradecane). The corresponding hexafluorophosphate salts were also prepared and characterized. The salts with propyl and hexyl substituents melted at 171 degrees C and 153 degrees C, respectively, whereas other salts decomposed above 220 degrees C without melting. X-ray crystallography revealed the formation of intermolecular hydrogen bonds involving the NH hydrogens, which are responsible for the high melting points. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：275 / 279
页数：5
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