使用PMR和IR光谱研究了铬(I),钼(II)和钨(III)羰基化合物的6-二甲基氨基fulvenic配合物在二氯甲烷中的不同酸度的三氟乙酸和乙酸溶液中的质子化。已经确定,络合物在金属原子上质子化并且质子化速率线性依赖于介质的酸度。配合物I–III的碱度比较表明,其碱度比为I / II / III⋍1/150/1800。
Tricarbonyl(fulvene)chromium complexes, (C5H4CR2)Cr(CO)3, react with HgCl2 and SnCl4, respectively, to give stable 1 : 1 adducts. The metal basicity of the tricarbonyl(fulvene)chromium complexes is largely determined by the electronic properties of the substituents R at the exocyclic carbon atom of the fulvene ligand. The first crystalline protonation product of a fulvene complex was obtained by treatment
三羰基(富勒烯)铬配合物(C 5 H 4 CR 2)Cr(CO)3分别与HgCl 2和SnCl 4反应,得到稳定的1:1加合物。三羰基(富烯)铬配合物的金属碱性在很大程度上取决于在富烯配体的环外碳原子上取代基R的电子性质。通过治疗[η获得的富烯复合物的第一结晶质子化产物5 -6,6-双(二甲氨基)亚甲基环戊二烯]的Cr(CO)3与HBF 4。
The synthesis and spectroscopic behaviour of (CO)3Cr(C5H4=CH-C5H4)FeC5H5 is described. The compound shows a bathochromic shift in the UV/vis-spectra of 20 nm upon changing the solvent from n-hexane to THF. The NMR spectra suggest that there is no internal rotational motion in the molecule at room temperature.