- 作者: 李少榕 ; 洪嘉禧
- 作者服務機構: 義守大學化學工程系
- 中文摘要: The isomerization of the complex tians-meso-CH/sub 3/Co(H/sub 2/O)L/sup 2+/ (L = 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene) to trans-primary, rac-CH/sub 3/Co(H/sub 2/O)L/sup 2+/ has been investigated from pH range 7.11 to 8 .09 in aqueous solution. The reaction rate law has been determined as: -d[meso-CH/sub 3/Co(H/sub 2/O)L/sup 2+/]/dt = k/sub OH/ [OH-][meso-CH/sub 3/Co(H/sub 2/O)L/sup 2+/], where k/sub OH/ = 600.plmin.10M/sup -1/s/sup -1/ at 25.degree.C and .mu.= 0.5M . The activation parameters of the reaction were also studied with .DELTA.H/sup .plmin./= 19.1.plmin.0.9Kcal mol/sup -1/ and .DELTA.S/sup .plmin./ = 18.0.plmin.0.8cal K/sup -1/mol/sup -1/. A mechanism that involves a secondary NH inversion is proposed.
- 英文摘要: --
- 中文關鍵字: Isomerization; Kinetics; Macrocycle Metal Complex; Tetraazacyclotetradecadiene
- 英文關鍵字: 異構化;動力學;巨環金屬錯合物;四氮環十四雙烯