读过《大学化学》1990年第2期“[Cr(NH_3)_6]~(3+)离子在氨水中能直接形成吗?”一文后,也感到某些无机化学教材关于[Cr(NH_3)_6]~(3+)形成的说法不够准确,但是,在Cr~(3+)溶液中加入氨水,使之形成某种形式的氨配离子却是能够实现的,并不是像该文章指出的那样“不但NH_3分子不能取代[Cr(H_2O)_6]~(3+)离子中的H_2O分子,就连更强场强的乙二胺也不能取代[Cr(H_2O)_6]~(3+)离子中的H_2O分子。”由于这个问题涉及到教学内容,作为化学教 Read the “University of chemistry” 1990 the second period “[Cr (NH_3) _6] ~ (3+) ions in ammonia can be formed directly?” After a text, also felt that some of the Inorganic Chemistry textbook on the [Cr NH3) _6] ~ (3+) is not accurate enough. However, adding ammonia to Cr3 + to form some kind of ammonia ion can be realized, not like this article It is pointed out that not only NH_3 molecules can not replace H_2O in [Cr (H_2O) _6] ~ (3+) ions, even stronger field ethylenediamine can not replace [Cr (H_2O) _6] 3+) ions in the H_2O molecule. "Because of this issue relates to teaching content, as chemistry teaching