| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| 1,3-二甲基咪唑-2-亚胺 | 2-imino-1,3-dimethylimidazoline | 59581-72-5 | C5H9N3 | 111.147 |
From 2-trimethylsilylimino-1,3-dimethylimidazoline (6, ImN-SiMe3) and CSCl2 the imidochlorothionic acid [ImN=C(S)Cl (7) is obtained; 7 gives with AlCl3 the cationic isothiocyanate [ImN=C=S]AlCl4 (9). The corresponding imidothiourea ImN=C(S)NEt2 (12) is formed reacting Et2NC(S)Cl (10) and ImNLi (11). The reaction of ImN=C(S)SSiMe3 (13) with iodine gives the dicationic species [ImN=C(SSiMe3)S}2](I3)2 (14) which is transformed into the protonated imidothiourea [ImN=C(S)N(H)Im]I (16) by polar solvents. From 16 the imidothiourea (ImN)2CS (8) is obtained as a polymeric solid. The strong π-electron donor ability of the imido substituent ImN is revealed by the X-ray structure analyses of 12 and 16.
1,3-Dimethyl-2-iminoimidazoline (4, ImNH) reacts with CS2 to give the imidazolium salt [ImNH2][(ImNCS2)2H] (7) in which two dithioformimide fragments are linked by a hydrogen bridge. From the trimethylsilyl derivative ImNSiMe3 (11) and CS2 the adduct ImNSiMe3 • CS2 (12) is obtained which reacts with oxygen to give the disulfide (ImNCS2) (14). The X-ray structures of 7 and 14 were determined.