Caibon tetrachloride

Assemble in a fume-cupboard the apparatus shown in Fig. 67(A). Place 15 g. of 3,5-dinitrobenzoic acid and 17 g. of phosphorus pentachloride in the flask C, and heat the mixture in an oil-bath for hours. Then reverse the condenser as shown in Fig. 67(B), but replace the calcium chloride tube by a tube leading to a water-pump, the neck of the reaction-flask C being closed with a rubber stopper. Now distil off the phosphorus oxychloride under reduced pressure by heating the flask C in an oil-bath initially at 25-30, increasing this temperature ultimately to 110°. Then cool the flask, when the crude 3,5-dinitro-benzoyl chloride will solidify to a brown crystalline mass. Yield, 16 g., i.e,y almost theoretical. Recrystallise from caibon tetrachloride. The chloride is obtained as colourless crystals, m.p. 66-68°, Yield, 13 g Further recrystallisation of small quantities can be performed using petrol (b.p. 40-60°). The chloride is stable almost indefinitely if kept in a calcium chloride desiccator. 

Figure 12.11 Equilibrium yx diagrams at a constant pressure of l(atm). (n) Tetrahydrofuran(l)/car-bon tetiachloride(2) (b) chloroform(l)/tetiahydrofuian(2) (c) furan(l)/caibon tetrachloride(2) (d) ethanol(l)/toluene(2).

EquUibrium ConditTo oTchlorine tween caibon tetrachloride and water Dioxide and Water—-W. Bray. Lccl/Gh o lies between T27 and 1 17... 

Shimada, S., K. Nakagawa, and K. Tabuchi, Photopolymerization of Methy Methacrylate with l-benzyl-l,4-Dihydronicotinamide in the Presence of Caibon Tetrachloride, Poly. J., 21,275 (1989). 

Table 1. Optimal parameteis for n-hexane, benzene and caibon tetrachloride at 3Q3K...

Zielkiewicz, J. Oracz, P. Warycha, S. Total vapor pressure measurements and excess Gibbs energies for the binary systems methanol -l- ethanol, ethanol -l- 2-propanol, benzene + cyclohexane, benzene + caibon tetrachloride and benzene + ethanol at 303.15 and 313.15 K Fluid Phase Equilib. 1990, 58, 191-209... 

Baghdoyan, A. Hsu, F. Fried, V. Excess Gibbs function of 23-dimethyl-2-butene + caibon tetrachloride and 2,3-dimethyl-2-butene + tetrachloroethylene systems /. Chem. Thermodyn. 1975, 7, 895-900... 

Goral, M. Oracz, P. Warycha, S. Vapour-liquid equilibria. IV. The ternary system caibon tetrachloride - methemol -... 

Brown, I. Smith, F. Liquid-vapour equilibria. VII. The systems nitromethane + benzene and nitromethane + caibon tetrachloride... 

Type I Solutions of this type show small positive deviations from ideal behaviour. The total pressure is at all times intermediate between those of the two pure components. Fig. 9.3 gives a graphical representation for the cyclohexane-caibon tetrachloride system. CQ -benzene, benzene-toluene, water-methanol are other liquid pairs showing similar behaviour. 

Compound 2 To a stirred solution of methyl 4-methyl benzoate (4.5 g, 30 mmol) and NBS (5.34 g, 30 mmol) in 25 ml caibon tetrachloride, benzoyl peroxide (36 mg, 0.15 mmol) was sMed. The mixture was refluxed for 4 h before it was filtered by suction filtration when the solution was still hot The filtrate was concentrated by rotary evaporation and was mixed with triethyl phosphite (12.5 g, 75 mmol) in a 50 ml round-bottom flask. The resulting mixture was then stirr under reflux for 20 h. The excess triethyl phos te was removed by vacuum distillation. The residue was purified by flash chromatogrs y (silica gel, ethyl acetate / methanol (100 / 2)) to give 7.3 g colorless liquid (85% yield) NMR... 

Albumin + KCl(aq), polystyrene + toluene, and polystyrene + caibon tetrachloride, J. 

Wilhelm, E. Inglese, A. GroUer, J.-P. E. Kehiaian, H. V. Thermodynamics of binary mixtures containing alkynes. II. Excess enthalpies of binary mixmres of 1 -hexyne and 3-hexyne with caibon tetrachloride, dipropyl ether, and triethylamine at 298.15 K Monatsh. Chem. 1978,109,435-442... 

Bissell, T. G. Okafor, G. E. Williamson, A. G. Enthalpies and volumes of mixing of alkanes with caibon tetrachloride,... 

Otterstedt, J.-E. A. Missen, R. W. Thermodynamic properties of solutions of alcohols and caibon tetrachloride. Part 2. - Heats and entropies of mixing Trans. Faraday Soc. 1962,55,879-889... 

Harsted, B. S. Thomsen, E. S. Excess enthalpies from flow microcalorimetry. 3. Excess enthalpies for binary mixtures of aliphatic and aromatic hydrocarbons, caibon tetrachloride, chlorobenzene and carbon disulphide J. Chem. Thermodyn. 1975,7, 369-376... 

Fenby, D. V. Billing, G. J. Smythe, D. B. Excess enthalpies of dimethyl sulphoxide with diloroform, caibon tetrachloride, and benzene J. Chem. Thermodyti. 1973,5,49-56... 

Morcom, K. W. Travers, D. N. Heats of mixing of some pyridine bases with caibon tetrachloride Trans. Faraday Soc. 1966,62... 

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