Ionic liquids from the cationic cobalt(III) Schiff base complex, [Co(acacen)L2][Tf2N] (acacen = N,N′-bis(acetylacetone)ethylenediamine, Tf2N = bis(trifluoromethanesulfonyl)amide)

被引:4
作者
Okuhata, Megumi [1 ]
Mochida, Tomoyuki [1 ]
机构
[1] Kobe Univ, Dept Chem, Grad Sch Sci, Kobe, Hyogo 657, Japan
关键词
Ionic liquid; Thermal properties; Acacen; Schiff base; Axial ligand; CRYSTALS; SALTS;
D O I
10.1080/00958972.2014.917295
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Ionic liquids comprising cationic cobalt(III) complexes [Co(acacen)L-2][Tf2N] (L = 3-butylpyridine (1), 1-butylimidazole (2); acacen = N,N'-bis(acetylacetone)ethylenediamine, Tf2N = bis(trifluoromethanesulfonyl) amide) were prepared. 1 is a liquid at room temperature and exhibits a glass transition at -12 degrees C, whereas 2 is a solid at room temperature with a melting point of 74.6 degrees C and glass transition temperature of -15 degrees C upon cooling from the melt. These salts are reddish brown diamagnetic materials that are stable against air and water; these properties differ from those of the corresponding iron(III) salt. Desorption of the axial ligands of 1 and 2 occurs at 180 and 207 degrees C, respectively.
引用
收藏
页码:1361 / 1366
页数:6
相关论文
共 30 条
[1]  
[Anonymous], 2002, LOW LYING POTENTIAL
[2]  
Armand M, 2009, NAT MATER, V8, P621, DOI [10.1038/NMAT2448, 10.1038/nmat2448]
[3]   Spectroscopy and electrochemistry of cobalt(III) Schiff base complexes [J].
Bottcher, A ;
Takeuchi, T ;
Hardcastle, KI ;
Meade, TJ ;
Gray, HB ;
Cwikel, D ;
Kapon, M ;
Dori, Z .
INORGANIC CHEMISTRY, 1997, 36 (12) :2498-2504
[4]   Electrochromic and magnetic ionic liquids [J].
Branco, Aida ;
Branco, Luis C. ;
Pina, Fernando .
CHEMICAL COMMUNICATIONS, 2011, 47 (08) :2300-2302
[5]   Ionic liquids from copper(II) complexes with alkylimidazole-containing tripodal ligands [J].
Funasako, Yusuke ;
Nosho, Misaki ;
Mochida, Tomoyuki .
DALTON TRANSACTIONS, 2013, 42 (28) :10138-10143
[6]   Organometallic ionic liquids from alkyloctamethylferrocenium cations: thermal properties, crystal structures, and magnetic properties [J].
Funasako, Yusuke ;
Inagaki, Takashi ;
Mochida, Tomoyuki ;
Sakurai, Toshihiro ;
Ohta, Hitoshi ;
Furukawa, Ko ;
Nakamura, Toshikazu .
DALTON TRANSACTIONS, 2013, 42 (23) :8317-8327
[7]   Vapochromic Ionic Liquids from Metal-Chelate Complexes Exhibiting Reversible Changes in Color, Thermal, and Magnetic Properties [J].
Funasako, Yusuke ;
Mochida, Tomoyuki ;
Takahashi, Kazuyuki ;
Sakurai, Toshihiro ;
Ohta, Hitoshi .
CHEMISTRY-A EUROPEAN JOURNAL, 2012, 18 (38) :11929-11936
[8]   Magnetic memory based on magnetic alignment of a paramagnetic ionic liquid near room temperature [J].
Funasako, Yusuke ;
Mochida, Tomoyuki ;
Inagaki, Takashi ;
Sakurai, Takahiro ;
Ohta, Hitoshi ;
Furukawa, Ko ;
Nakamura, Toshikazu .
CHEMICAL COMMUNICATIONS, 2011, 47 (15) :4475-4477
[9]   Thermal properties of alkyloctamethylferrocenium salts with TFSA and TCNE (TFSA = bis(trifluoromethylsulfonyl)amide and TCNE = tetracyanoethylene) [J].
Funasako, Yusuke ;
Abe, Ken-ichi ;
Mochida, Tomoyuki .
THERMOCHIMICA ACTA, 2012, 532 :78-82
[10]   Synthesis and characterization of luminescent room temperature ionic liquids based on Ru(bpy)(CN)42- [J].
Gago, Sandra ;
Cabrita, Luis ;
Carlos Lima, J. ;
Branco, Luis C. ;
Pina, Fernando .
DALTON TRANSACTIONS, 2013, 42 (17) :6213-6218