The formula B2Si refers to the compound disilicon diboride. It is a ceramic material with a high melting point and excellent hardness, often used in cutting tools and protective coatings.
The covalent bond name for B2Si would be hepta. This is the short term for it.
maybe Boron(II) Silicide(4-)
The compound name for B2Si is diboron monosilicide.
The covalent bond name for B2Si is known as hepta. This is known as the short term for it.
The covalent name for Si2Br6 is disilicon hexabromide.