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題名 | 磁弛緩探討液體中三乙醯丙酮鉻和甲醇之結合 |
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作者 | 王佩蓮; | 書刊名 | 臺北市立師範學院學報 |
卷期 | 22 1991.06[民80.06] |
頁次 | 頁255-273 |
分類號 | 343.386 |
關鍵詞 | 三乙醯丙酮鉻; 甲醇; 液體; 磁弛緩; |
語文 | 中文(Chinese) |
中文摘要 | 利用NMR核磁共振光譜儀探討液體中三乙醯丙鉻和甲醇之結合。本研究 結果可以得知三乙醯丙酮鉻和甲結合的穩定常數(β)、結合數目、焓為- 3.5Kcal/mol]及熵為-9.3cal/mol.k,進而可求得鉻和氫(碳)的距離3.3�o(5.1�o)。 |
英文摘要 | TNMR relaxations have been used to study the solvation of Cr(acac) thewith methanoi in solutions. The temperature-dependent stability constant hepof thesolvated complex has been determined in the region of dilute devchloroform solution. The results have been used to interpret the Chrdeuteron relaxationdate in the correspondingperdeuteriated solutions proof Co(acac). A solvationnumber of two is found. The temperature arange covered was 285~325K. Thechanges in enthalpy and entropy hexforthe solvation processes are found to be△H°=-3.5Kcal/mol and 65△S °=- 9.3cal/mol-K. The distancebettween the chromium ion and the flaproton (or carbon atom) of solvated chloroform was found to be 3.3�o 5.0 (or 5.1�o). This evidence confirms that the solvation of the complex diois due to the formation of a trifurcatedhydrogen bond between refmethanol and Cr(acac). |
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