Strongest base

The strongest base ever synthesised is orthodiethynyl benzene dianion; it was made by researchers of Queensland University of Technology (Australia). According to results published in June 2016, it has a proton affinity of 1,843 kJ/mol.

Chemical compounds can be classified either as acids or base. Acids tend to lose a proton (positive ion of hydrogen H+); bases, however, tend to acquire a proton in their structure. Because of this, the strength of a base is measured considering its proton affinity, which indicates the affinity of a compound for an H+ ion. Orthodiethynyl benzene dianion has very high proton affinity as it has two negative charges in its structure, which will attract the positive H+ ion.