6-But2)2(OEt2) (5). In contrast, no diethyl ether complex is formed by the dithiolate 3. The 1H NMR spectra of 4 and 5 show equilibria between the ether complexes and the base-free dimers. A comparison of these spectra with those of the dimeric 1 and 2 allows an unambiguous assignment of the paramagnetically shifted signals. Treatment of 1 with excess ammonia gives the tetrahedral diammine Fe(OC6H2-2
用 2 当量的适当
苯酚或
硫醇处理 FeN(SiMe 3 ) 2 } 2得到二聚体 Fe(OC 6 H 2 -2,6-Bu t 2 -4-Me) 2 } 2 ( 1 )和Fe(OC 6 H 3 -2,6-Bu t 2 ) 2 } 2 ( 2 )或单体FeSC 6 H 3 -2,6-(C 6 H 3 -2,6-Pr i 2 ) 2 } 2 ( 3) 的产量中等至极好。1和2从
乙醚中重结晶得到相应的三配位醚配合物 Fe(OC 6 H 3 -2,6-Bu t 2 -4-Me) 2 (OEt 2 ) ( 4 ) 和 Fe(OC 6 H 3 -2,6-Bu t 2 ) 2 (OEt 2 ) ( 5 )。相反,二
硫醇3不形成二
乙醚复合物。4和5的1 H NMR 谱显示醚配合物和无碱二聚体之间的平衡。将这些光谱与二聚体1和2 的光谱进行比较,可以明确分配顺磁位移信号。的治疗1与过量的
氨给出四面体二
氨合的Fe(OC