Hypomanganate

In chemistry, hypomanganate, also called manganate(V) or tetraoxidomanganate(3−), is a trivalent anion (negative ion) composed of manganese and oxygen, with formula MnO3−
4.

Hypomanganates are usually bright blue.[1][2] Potassium hypomanganate K
3MnO
4 is the best known salt, but sodium hypomanganate Na
3MnO
4, barium hypomanganate Ba
3(MnO
4)
2, and the mixed potassium-barium salt KBaMnO
4 is also known.[3] The anion can replace phosphate PO3−
4 in synthetic variants of the minerals apatite[4][5] and brownmillerite.[6]

  1. ^ Cite error: The named reference G&E was invoked but never defined (see the help page).
  2. ^ D. Reinen, W. Rauw, U. Kesper, M. Atanasov, H. U Güdel, M. Hazenkamp, and U. Oetliker (1997): "Colour, luminescence and bonding properties of tetrahedrally coordinated chromium(IV), manganese(V) and iron(VI) in various oxide ceramics" Journal of Alloys and Compounds, volume 246, issue 1-2, pages 193-208. doi:10.1016/S0925-8388(96)02461-9
  3. ^ Cite error: The named reference Loye was invoked but never defined (see the help page).
  4. ^ K. Dardenne, D. Vivien, and D. Huguenin (1999): "Color of Mn(V)-substituted apatites A10((B, Mn)O4)6F2, A = Ba, Sr, Ca; B= P, V". Journal of Solid State Chem.istry, volume 146, issue 2, pages 464-472. doi:10.1006/jssc.1999.8394
  5. ^ Grisafe, D.A. and Hummel, F.A. (1970): "Pentavalent ion substitutions in the apatite structure, part A: Crystal chemistry". Journal of Solid State Chemistry, volume 2, issue 2, pages 160-166 doi:10.1016/0022-4596(70)90064-2
  6. ^ P. Jiang, J. Li, A. Ozarowski, A. W. Sleight, and M. A, Subramanian (2013): "Intense turquoise and green colors in brownmillerite-type oxides based on Mn5+ in Ba
    2    In
    2-x    Mn
    x    O
    5+x    " Inorganic Chemistry, volume 52, issue 3, pages 1349-1357. doi:10.1021/ic3020332