The reaction of 2-imino-1,3-dimethylimidazoline (10, ImNH) with X-CH2CH2-X (11, X = p-CH3C6H4SO3) gives the diimine adduct ImN-CH2CH2-NIm · 2HX (12) from which the diimine ImN-CH2CH2-NIm (13) is obtained on treatment with KH. 13 reacts with (C6H5CN)2PdCl2 (15) to give the chelate complex (ImN-CH2CH2-NIm)PdCl2 (16). The X-ray structures of 12 and 16 are reported.
The bifunctional 2,3-dihydro-2-methoxyethylimino-l,3-dimethylimidazole (C8H 15N3O , 10) is obtained from the reaction of methoxyethyl tosylate (7) and 2,3-dihydro-2-imino-1,3- dimethylimidazole (8) followed by deprotonation in good yield. 10 reacts with (COD)RhCl}2 (COD = 1,5-cyclooctadiene) to give the imine complex (C8H 15N3O)Rh(COD)Cl (11), which is converted into the chelate complex [(C8H15N3O)Rh(COD)]BF4 (12) on treatment with AgBF4. The imine complex (C8H15N3O) 2PdCl2 (13) is formed through the reaction of 10 with (PhCN)2PdCl2. The X-ray structures of 11, 13 and 2 C8H15N3O · H2PdCl4 (15) are reported
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.
1,3-二甲基-2-亚胺咪唑啉(4,ImNH)与CS2反应,形成咪唑盐[ImNH2][(ImNCS2)2H](7),其中两个二硫代甲酰亚胺碎片通过氢键连接。从三甲基硅基衍生物ImNSiMe3(11)和CS2中得到加合物ImNSiMe3•CS2(12),它与氧反应形成二硫化物(ImNCS2)(14)。确定了7和14的X射线结构。
The barbiturate salts 2-amino-1,3-dimethylimidazolium N,N’-dimethylbarbiturate (8) and 1,3- diisopropyl-4,5-dimethylimidazolium N,N’-dimethylbarbiturate (10) are obtained from N,N’- dimethylbarbituric acid (6) and 2-imino-1,3-dimethylimidazoline (7) or 2,3-dihydro-1,3-diisopropyl- 4,5-dimethylimidazol-2-ylidene (9) in good yields. Their crystal structures reveal the presence of strong interionic N-H-O (8) and C-H-O (10) hydrogen bonds to give dimeric (8) and monomeric (10) ion pairs. These pairs are linked by weak C-H-O hydrogen contacts to give three-dimensional networks.