Na[Cr2(μ-H)(CO)10]. [(bpy)Cu(μ3-H)Cr2(CO)10] (1b) and [(C6H8N2)Cu(μ3-H)Cr2(CO)10] (1c) are formed by ligand substitution reactions from 1a as starting compound. A fragmentation reaction of 1a, which is induced by the addition of pyridine, yields the tetranuclear cluster [(py)Cu(μ3-H)Cr(CO)5}2] (3). Cleavage of 1a is also observed by addition of PPh3, the reaction product is the ionic compound [Cu(PPh3)3][Cr2(μ-H)(CO)10]
与
铬第一异簇2(μ-H)(CO)10 -Fragment,[(NH 3)2的Cu(μ 3 -H)的Cr 2(CO)10 ](1A)中,通过反应形成的Na [Cr 2(μ-H)(CO)10 ]的
氯化
氨铜(I)溶液。[(联
吡啶)的Cu(μ 3 -H)的Cr 2(CO)10 ](图1b)和[(C 6 H ^ 8 Ñ 2)的Cu(μ 3 -H)的Cr 2(CO)10 ](1C由1a作为起始化合物通过
配体取代反应形成。的片段化反应1a中,这是通过加入
吡啶诱导,产生了四核簇[(PY)的Cu(μ 3 -H)的Cr(CO)5 } 2 ](3)。通过添加PPh 3也观察到了1a的裂解,反应产物是离子化合物[Cu(PPh 3)3 ] [Cr 2(μ-H)(CO)10 ](4)。离子化合物(如4)中的CrCr距离与阴离子的构象相关;在交错的阴离子中4找到最小的距离。[Zn(NH 3)4 ] [Cr 2(μ-H)(CO)10