Dicyanamide anion

It is easy to notice that the lowest value of densify is with dicyanamide anion, [dca] , and the highest with the l7/s(trifluoromethylsultonyl)imide anion, [Tf2N]-. [Pg.5]

MacFarlane, D. et al.. Low viscosity ionic liquids based on organic salts of the dicyanamide anion, Chem. Commun., 1430, 2001. [Pg.61]

Lopes, J. N. C. and Padua, A. A. H., Molecular force field for ionic liquids III Imidazolium, pyridinium, and phosphonium cations chloride, bromide, and dicyanamide anions, /. Phys. Chem. B, 110,19586, 2006. [Pg.369]

Acetylation reactions which could be of use in the transformation of bio-sourced alcohols and sugars have been performed in bmim-derived ionic liquids (Forsyth el al., 2002 Alleti el al., 2005). If the dicyanamide anion is incorporated into the liquid, mild acetylations of carbohydrates can be performed at room temperature, in good yields, without any added catalyst (Forsyth el al., 2002). The ionic liquid acts as an efficient base catalyst. [Pg.59]

A possible solution to this problem of low rates is to use ionic liquids as solvents. Certain ionic liquids, e.g. those containing the dicyanamide anion, (NC)2N, have been shown to dissolve sucrose in concentrations of several hundred grams per litre [210]. The lipase-catalyzed acylation of glucose with fatty acid esters has been shown to occur in a mixture of an ionic liquid, [bmim][BF4], and tert-butanol [211]. [Pg.375]

Deng M J, Chen P Y, Leong T I, et al. Dicyanamide anion based ionic hquids for electrodeposition of metals. Electrochem. Commun. 2008. 10, 213-216. [Pg.471]

Ionic liquids containing the dicyanamide anion were shown to be excellent solvents and base catalysts for the O-acetylation of glucose and other alcohols [86,99,113]. Glucose was acetylated in [C4mim][dca] with no added catalyst at room temperature, giving 89% yield after 12 min [113]. An even higher yield of 98% was obtained at 50 °C after 6 min (Scheme 2). [Pg.28]

Hemdndez-Femdndez FJ, de los Rfos AP, TomSs-Alonso F, G6mez D, Vfllora G (2009) Improvement in the separation efficiency of transesterification reaction compounds by the use of supported ionic liquid membranes based on the dicyanamide anion. Desalination 244 122-129... [Pg.288]

A simple synthesis of 1,3,5-trichloro-l A4,2,4.6-thiatriazine (1) is by treatment of sodium or tetraalkylammonium dicyanamide with thionyl chloride.910 Originally, this reaction was described in 1970 and the product was thought to be jV -chloro-A/-(chlorosulfanyl)-/V-cyano-carboximidic chloride.60 The reaction is carried out with a great excess of thionyl chloride in the presence of a catalytic amount of dimethylformamide. The first reaction step consists of the formation of the thionyl chloride-dimethylformamide complex and reaction with the dicyanamide anion. The second step is a further sulfinylation with elimination of sulfur dioxide.32... [Pg.805]

The viscosity is also a function of the anion. Bistriflamide and dicyanamide anions result in relatively low viscosities, as shown in Figure 4. Given the same trihexyl-(tetradecyl)phosphonium cation, the viscosity of the dicyanamide salt is an order of magnitude lower than that of the salt with a chloride anion. Solute and temperature have a similar viscosity lowering effect. [Pg.575]

New anions have been used to form hydrophilic ionic liquids. The association of the dicyanamide anion with A, N -dialkylpyrrolidinium, tetraalkylammonium and emim 40, (Figure 2.7) leads to water-soluble ionic liquids with melting points below Similar behavior has been observed for phosphate ionic liquids, not only for the corresponding standard [emim]3[P04] (41), but also for polycationic species such as 42. Although they are viscous, these salts are liquid at room temperature. ... [Pg.24]

Chang, J. K., M. T. Lee, W. T. Tsai, M. J. Deng, and I. W. Sun. 2009. X-ray photoelectron spectroscopy and in situ X-ray absorption spectroscopy studies on reversible insertion/desertion of dicyanamide anions into/from manganese oxide in ionic liquid. Chemistry of Materials 21 2688-2695. [Pg.236]

MacFarlane DR, Forsyth SA, Golding J, Deacon GB (2002) Ionic liquids based on imidazolium, ammonium and pyrrolidinium salts of the dicyanamide anion. Green Chem 4 444... [Pg.259]

Xu M, Ivey DG, Xie Z, Qu W (2013) Electrochemical behavior of Zn/Zn(Il) couples in aprotic ionic liquids based on pyrrolidinium and imidazolium cations and bis (trifluoromethanesulfonyl)imide and dicyanamide anions. Electrochim Acta 89 756-762. doi 10.1016/j.electacta.2012.11.023... [Pg.60]

Force Field for Ionic Liquids III Imidazolium, Pyridinium, and Phosphonium Cations Chloride, Bromide, and Dicyanamide Anions. [Pg.489]

F. 12 Thennogravimetric traces for dicyanamide anion based phosphonium and the eorresponding ammonium RTELs... [Pg.303]

Yoshida, Y. Baba, O. Saito, G. (2007). Ionic liquids based on dicyanamide anion Influence of structural variations in cationic structures on ionic conductivity. Journal of Physical Chemistry B, Vol. Ill, No. 18, pp. 4742-4749, ISSN 1520-6106. [Pg.171]

Magnetic chiral ionic liquids derived from amino adds. Chem. Commtm., 6922-6924 MacFarlane, D. R. Golding, J. Forsyth, S. Forsyth, M Deacon, G. B. (2001). Low viscosity ionic liquids based on organic salts of the dicyanamide anion. Chem. Commtm., 1430-1431... [Pg.736]

Yoshida, Y. Baba, O. Larriba, C. Saito, G. (2007b). Imidazolium-based ionic liquids formed with dicyanamide anion influence of cationic structure on ionic conductivity. /. Phys. Chem. B, 111, 12204-12210 Yoshida, Y. Tanaka, H. Saito, G. (2007c). Organic paramagnetic ionic liquids based on anion containing 2,2,6,6-tetramethyl-l-pip>eridinyloxy radical moiety. Chem. Lett, 36,1096-1097... [Pg.737]

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