排序方式: 共有31条查询结果,搜索用时 31 毫秒
31.
Ni(Ⅱ) naphthenate in hydrogenated gasoline or toluene will appear light green, which is the result of absorption in the red and blue bands of the spectrum. The three peaks caused by the spin-allowed d-d transitions are 403, 680, and 1170nm respectively, and are similar to those of Ni(H_2O)_6~(+2). The configuration of Ni(Ⅱ) complex is octabedral.In a two-component system of Ni(naph)_2-Al(i-Bu)_3, the naphthenate ligand attached to Ni(Ⅱ) can be exchanged for the alkyl group on tri-isobutylaluminium, if Al(i-Bu)_3/Ni(naph)_2 in a system. containing metalalkyl and naphthenate does not exceed the value of 0.53. At a higher ratio, Al(i-Bu)_3/Ni(naph)_2>0.53, Ni(Ⅱ) is reduced to Ni(Ⅰ) and Ni(O).In a two-component system Ni(naph)_2-BF_3·OEt_2, a part of the naphthenate can be exchanged for halogen. A new Ni(Ⅱ) complex is formed, which consists of three new d-d bands in the region 360-1660 nm. 相似文献