Regrettably, the formula SiH3N2 you provided is not a recognized chemical substance. Each silicon atom (Si) typically combines with 4 other atoms because it has 4 unpaired electrons in its outermost shell, while a nitrogen atom (N) typically combines with 3 other atoms as it has 3 unpaired electrons. Therefore, the chemical formula SiH3N2 does not adhere to this rule.
However, we can identify that Si3N4, also known as Silicon Nitride, is a real chemical substance. Silicon Nitride is a colorless, odorless solid that does not dissolve in water. It has good mechanical properties and maintains chemical stability at high temperatures. Therefore, it is commonly used in industrial applications that require high mechanical strength and chemical stability. Silicon Nitride can be synthesized in the laboratory by heating silicon with nitrogen at high temperatures.