Studies on the synthesis and electrochemistry of crown ether dithiocarbamates and the molecular dynamics of bis(aza-15-crown-5)thiuram disulphide. Crystal structure of cobalt tris[(aza-15-crown-5)dithiocarbamate]
作者:Jaume Granell、Malcolm L. H. Green、Valerie J. Lowe、Seth R. Marder、Philip Mountford、Graham C. Saunders、Neil M. Walker
DOI:10.1039/dt9900000605
日期:——
are present ΔG‡ falls to 54.5 ± 0.5 kJ mol–1. Complexes of the crown ether dithiocarbamates with Ni, Cu, Cr, Fe, Co, and Mo have been prepared and their electrochemistry investigated. Small shifts in the values of E½ were observed in the presence of alkali-metal cations. The molecular structure of cobalt tris[(aza-15-crown-5)dithiocarbamate] has been determined by X-ray crystallography.
aza-15-crown-5(1,4,7,10-tetraoxa-13-azacyclopentadecane)与氢氧化钠和二硫化碳反应生成二硫代氨基甲酸钠(aza-15-crown-5)二硫代氨基甲酸钠(1,4,7, 10-四氧杂十三-氮杂环戊二烯-13-碳二硫酸酯),(1)。4'-氨基苯并-15-冠-5(15-氨基苯并1,4,7,10,13-五氧杂环戊烷)形成相应的二硫代氨基甲酸酯(2)。化合物(1)的氧化二聚产生双(氮杂-15-冠-5)秋兰姆二硫化物[13,13'-(1,4-dithioxo-2,3-dithiabutane-1,4-diyl)di(1,4 ,(7,10-四氧杂十三-氮杂环戊烷)],(3),相反(2)在相同条件下分解为4'-异硫氰酸根合苯并基-15-冠-5。绕S 2旋转的能量屏障化合物(3)的C–N键,ΔG ‡ = 65.3±0.5 kJ mol –1,由13 C-