Bora­zine

Other names: 1,3,5,2,4,6-tri­aza­tri­bori­nane, borazole, inorganic benzene

B₃H₆N₃

46/50 uncommon

Despite containing no carbon, borazine is isoelectronic and isostructural with benzene, leading to its description as "inorganic benzene". Electronegativity differences between boron and nitrogen mean the analogy is not strict; the bond lengths and angles vary and the strength of the aromatic stabilization is not as strong for borazine as it is for benzene. Nevertheless, borazine is a fairly stable compound and a valuable precursor for boron nitride species that may similarly serve as analogues for carbon allotropes such as diamond or graphene.