Tags: Chemical Compound, Chemical Substance.
Dithionous acid is a sulfur oxoacid with the chemical formula H2S2O4. It is unstable in pure form but its salts known as dithionites are stable.It was initially assumed that the C2 symmetric structure HOS(=O)-S(=O)OH is the most stable among molecules with the formula H2S2O4 using ab initio calculations. The reason for this is the existence of intermolecular hydrogen bonds.
