Sequestering of atmospheric nitrogen by organometallic compounds was studied widely. Organometallic compounds are also useful to seize N 2 and to convert it to ammonia at an ambient condition to find out alternative chemical pathways. The N 2 fixation by the non-metallic process has also attracted attention very recently. In this new research avenue with the rapid development of carbene chemistry and its applications, carbenes are the front runners for the candidature of the N 2 sequestering agent. The possibility of nitrogen fixation by carbene was first reported in 1964 by Moore et al. It is exhibited that methylene reacts with N 2 in matrix solution to form diazomethane.