A relatively small amount of research on the heavy Group 14 nitrides, Ge₃N₄ and Sn₃N₄, has been reported as compared to other metal nitrides, even though they have useful mechanical and opto-electronic potential. Previous routes to these materials are typically achieved using high temperature, high-pressure conditions or using vapor deposition techniques. In this research, we explore the utility of using a much milder, solvothermal metathesis route. Exchange reactions between a metal halide and either NaNH₂ or NaN₃ are driven by the favorable formation of alkali or ammonium halides. These reactions form energetically unstable precursors that can decompose in situ to the given metal nitrides. Using mild conditions, it is most probable to produce metastable phases as opposed to the thermodynamically stable end products. Several reaction conditions result in amorphous nitride products with varying degrees of chemical and thermal stability, which seems dependent upon precursors and reaction conditions. Attempts to crystallize these amorphous metastable MN_x materials have not yet been successful, but experiments in pursuit of this are ongoing. Analysis of these nitrides includes X-ray diffraction, IR spectroscopy, thermogravimetric-differential thermal analysis, CHN analysis, X-ray photoelectron spectroscopy, energy dispersive spectroscopy, and scanning electron microscopy. If time permits, similar reaction strategies targeting Group 4 nitrides and metal phosphides will be discussed.