. 2001 Feb 27;98(5):2170–2175. doi: 10.1073/pnas.061514798

Table 2.

Manganese(II)-bicarbonate equilibrium speciation in water

Mn(II) species^*	K_B, M⁻¹	E₀, V, NHE^*	Catalase activity^†
Mn²⁺_aq	NA	1.18	Zero
Mn^II₂(HCO₃)³⁺	11–60^‡^§, 10^*	0.61	?
[Mn^II₂(HCO₃)₄]_n	4^§–20, 34^*	0.52	Active

From ref. 31.

^†

Catalysis of peroxide dismutation: 2H₂O₂ → 2H₂O + O₂. From refs. 33 and 34.

^‡

From ref. 40.

^§

From ref. 41.