MnCl(CNH): Insights into a Luminescent Transition Metal-Melem Complex.

In this work, the (MnCl(CNH) complex has been synthesized via solid-state reaction between manganese (II) chloride and melamine in the molar ratio of 1:2. A similar synthesis has been repeated with CoCl, and FeCl, resulting in two new metal-melam complexes (FeCl(CNH) and CoCl(CNH)). MnCl(CNH) crystallizes in the monoclinic crystal system with the space group 2/. The crystalline powder of MnCl(CNH) was studied by X-ray diffraction, infrared spectroscopy, and thermogravimetric analysis to examine its structure and properties. MnCl(CNH) also shows good thermal stability up to 370 °C; however, the complete decomposition occurred at 900 °C, yielding MnC. This paper presents an easy synthesis of the first luminescent transition metal-melem complex, providing new insights into the reactivity of melamine at elevated temperatures in the presence of transition metal chlorides.