What is Si2N2? Important knowledge about Si2N2

Regrettably, the chemical formula Si₂N₂ does not exist. When talking about Silicon and Nitrogen, one of the most common substances created by these two elements is Silicon Nitride (Si₃N₄).

1. Definition of Si₃N₄
   1.1 Names
   1.1.1 Common name: Silicon Nitride
   1.1.2 English name: Silicon Nitride
   1.2. Atomic mass: Silicon (28,086) and Nitrogen (14,007)
   1.3. Molecular weight: 140.28 g/mol
   1.4 Ion structure: In solid state, Silicon Nitride does not form ions.

2. Properties of Si₃N₄
   2.1 Physical properties of Si₃N₄
   State: Solid
   Color: Green to black
   Odor: Odorless
   2.2 Chemical properties of Si₃N₄: Silicon Nitride is insoluble in water and most organic solvents.

3. Silicon Nitride typically does not participate in common chemical reactions such as reactions with metals, acids, non-metals, or salts. It is particularly heat-resistant and does not undergo oxidation reactions until very high temperatures (> 1300°C).

4. Synthesis of Si₃N₄
   4.1 Laboratory synthesis of Si₃N₄: Silicon Nitride is typically prepared by reaction between Silicon and Nitrogen at high temperatures.
   4.2 Industrial synthesis of Si₃N₄: Silicon Nitride is also industrially produced by overheating excess silicon in nitrogen air at temperatures above 1300°C.