K_3[Fe(CN)_6]为一经典的配位化合物,其热稳定性已有人作过研究,但分解机理并不是很清楚,尤其对分解的第一阶段,一般认为是: 2K_3[Fe(CN)_6]→6KCN+2Fe(CN)]_2+(CN)_2, (1)然而,没有人发现第一阶段的固相产物中有KCN存在。 本文以气相色谱检测K_3[Fe(CN)_6]热分解的气相产物,以Mssbauer谱,X-射线衍射,红 K_3 [Fe (CN) _6] is a classical coordination compound, and its thermal stability has been studied, but the mechanism of decomposition is not very clear, especially for the first phase of decomposition, which is generally considered to be: 2K_3 [Fe CN) _6] → 6KCN + 2Fe (CN)] _2 + (CN) _2, (1) However, no one discovered the presence of KCN in the first phase of the solid phase product. In this paper, the gas phase products of K_3 [Fe (CN) _6] pyrolyzed by gas chromatography were detected by Mssbauer spectroscopy, X-ray diffraction, red