Apologies, but there seems to be a misunderstanding. N2O12 is not a valid chemical formula for any specific substance. In chemistry, there is no substance with the chemical formula N2O12.
This could be due to a typographical error or a misunderstanding about chemical structures. There are a number of common substances involving nitrogen and oxygen, such as N2O (nitrous oxide, also known as laughing gas), N2O4 (dinitrogen tetroxide), N2O5 (dinitrogen pentoxide), and other nitrogen oxides.
Each of these substances has specific physical and chemical properties, as well as chemical reactions in which they participate. If you want to know more about one of these substances or another chemical, please provide more details.