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.
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页码：275 / 279
页数：5
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