N2B2H6

N2B2H6 is a chemical formula representing a putative boron–nitrogen hydride containing two boron atoms, two nitrogen atoms, and six hydrogen atoms. In the chemical literature the species is typically discussed as a heteroborane analogue of diborane, B2H6, or as a class of isomers with a B2N2H6 core. There is no widely accepted, experimentally confirmed structure, and neutral N2B2H6 has not been reported as an isolable compound under standard conditions. Most work on N2B2H6 has been theoretical, using quantum chemical calculations to explore possible geometries, stabilities, and bonding patterns.

Several low-energy structural motifs have been proposed. In many calculations, cyclic frameworks featuring a four-atom B–N core with hydrogen substituents are favored, with B–H bridging interactions reminiscent of three-center two-electron bonds known in diborane-type species. Other proposed structures include acyclic arrangements with alternating B–N single bonds and terminal or bridging hydrogens. Predicted properties vary with geometry, but many putative isomers would be electron-rich and potentially reactive toward hydrolysis or oxidation. Energetic analyses commonly compare enthalpies of formation and compute vibrational spectra to guide future experimental searches.

If synthesized, N2B2H6 could illuminate bonding paradigms in heteroborane chemistry and contribute to understanding boron–nitrogen–hydrogen networks. Until experimental data emerge, the compound remains a topic of theoretical interest rather than an established chemical species.