摘要
在288.15—328.15K,用光度法测定了四苯硼钠在7种直链一元醇中的溶解度。计算并讨论了298.15K时,四苯硼钠从水到醇中的标准迁移自由能及介质效应的大小。通过计算机曲线拟合,给出了四苯硼钠的溶解度跟直链一元醇碳原子数及温度的关系: lgc=0.9090+(-0.4545+0.15201gT)(10+n).同时给出了298.15K时,四苯硼钠的标准迁移自由能跟直链一元醇的介电常数和碳原子数的关系: ⊿G_~e=55.75exp(-0.0881D);⊿G_~e=-4.92×10^(-3)+3.08n。
Solubilities (c) of sodium tetraphenylborate in methanol, ethanol, 1-propanol, 1-bushel, 1-pentanol, 1-hxeanol, 1-octanol at 288.15, 298.15, 308.15, 318.15, 328.15 K have been determinad by the spectrophotometry. These data can be expressed by lgc0.9090+(-0.4545+0.1520lgT)(10+n), where n are the atomic number of carbon for the straight chains monohydrio alcohols. The standard free energies of transfer (ΔG_t~) of sodium tetraphenylborate from water to the straight chains monohydric alcohols at 298.15 K have been calculated. The results can be expressed as ΔGe~=55.75 exp (-0.0881 D), where D are the dielectric constants of the alcohols. When ΔGe_t~ plotted against n,a good straight line is obtained. The results can be expressed as ΔGe_t~= -4.92×10^(-3)+3.08n.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1992年第3期223-227,共5页
Acta Chimica Sinica
