中文摘要：

四新奇 benzothiazolium 有 PF6 的离子的液体([C1Bth ][PF6 ] ，[C4Bth ][PF6 ] ，[C5Bth ][PF6 ] 并且[C6Bth ][PF6 ]) 被综合，并且他们的融化的点响了在 358.35 K424.05 K 之间被决定。他们的融化的点和阳离子上的直烷基链的长度的关系反映了 S 类型趋势。然后，在六更低的白酒(甲醇，乙醇， 1-propanol， 2-propanol， 1-butanol 和 2-methyl-1-propanol ) 的四离子的液体的溶解度在温度被测量分别地与静态的分析方法在气压 253.15383.15 K 响了。它被发现那[C6Bth ][PF6 ] 在所有，调查离子的液体在六白酒和溶解度有最大的溶解度[C4Bth ][PF6 ] 为在 313.15333.15 K 的温度在甲醇是很敏感的，它是所谓的温度敏感。这个特征具有到他们催化反应或抽取过程的应用程序的大意义，并且让离子的液体(IL ) 的恢复和复用变得更容易。而且，试验性的溶解度数据分别地与修改 Apelblat 方程和 h 方程被相关。用二个划分温度范围的关联的结果比使用整个温度范围的好，这被发现。

英文摘要：

Four novel benzothiazolium ionic liquids with 6PF- （[C1Bth][PF6], [C4Bth][PF6], [C5Bth][PF6] and [C6Bth][PF6]） were synthesized, and the rang of their melting points were determined between 358.35 K-424.05 K. The relationship of their melting points and the length of the straight alkyl chain on cation reflected‘S’ type ten-dency. Then, the solubilities of the four ionic liquids in six lower alcohols （methanol, ethanol, 1-propanol, 2-propanol, 1-butanol and 2-methyl-1-propanol） were measured in the temperature rang of 253.15-383.15 K at at-mospheric pressure with static analytical method, respectively. It was found that [C6Bth][PF6] in all investigated ionic liquids had the largest solubility in six alcohols and the solubility of [C4Bth][PF6] in methanol was very sensi-tive for temperature in 313.15-333.15 K, which was so-called “temperature-sensitivity”. This feature is of great significance to their application of catalyzing reaction or extraction process, and makes the recovery and reuse of ionic liquids （ILs） become easier. Moreover, the experimental solubility data were correlated with the modified Apelblat equation andλh equation, respectively. It was found that the result of correlation using two divided tem-perature ranges was better than that of using the whole temperature range.