“…At the outset, the interaction of carbene with transition metal [2,[19][20][21] produced highly valuable complexes in organic, material, and organo-metallic chemistry. [2,3,6] In addition, carbene also engages with other intermolecular interactions such as hydrogen bonds, [16,[22][23][24][25][26] halogen bonds, [26][27][28][29][30][31] beryllium bonds, [8,[32][33][34][35] lithium bonds, [8,29,[36][37][38] triel bonds, [29,[39][40][41][42] magnesium bonds, [34,35,[43][44][45] chalcogen bonds, [46] and aerogen bonds. [47] These interactions occur due to a lone pair of electrons in the carbene carbon atom.…”