(Solid plus liquid) equilibria and solid compound formation in (N-methyl-2-pyrrolidinone plus benzene, or toluene, or 1,3,5-trimethylbenzene, or ethylbenzene, or chlorobenzene, or 1,2-dichlorobenzene, or 1,2,4-trichlorobenzene, or 1,1,1-trichloroetha

摘要

(Solid + liquid) phase diagrams have been determined for (N-methyl-2-pyrrolidinone + benzene, or toluene, or 1,3,5-trimethylbenzene, or ethylbenzene, or chlorobenzene, or 1,2-dichlorobenzene, or 1,2,4-trichlorobenzene, or 1,1,1-trichloroethane, or dichloromethane). Solid addition compounds form with the empirical formulae: {(C5H9NO)(2).C6H6}. (C5H9NO . 2ClC(6)H(5)), (C5H6NO . Cl2C6H4), (2C(5)H(9)NO . Cl3C6H3). All are congruently melting compounds. Compound formation is attributed to a charge-transfer interaction with the benzene, or chlorobenzene, or 1,2-dichlorobenzene, or 1,2,4-trichlorobenzene acting as electron accepters and the nitrogen, or oxygen in N-methyl-2-pyrrolidinone acting as electron donors. (C) 2000 Academic Press. [References: 14]