Selenate

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Selenate ion in the classic notation
More likely bonding situation in the selenate ion

Selenates are the salts and esters of selenic acid H 2 SeO 4 . The selenate anion has the formula SeO 4 2− . Orthoselenates of orthoselenic acid H 6 SeO 6 (not known as a free acid) are also known.

Selenates are very similar to sulfates in their chemical properties. Unlike sulfates, selenates are good oxidizing agents ; they are reduced to selenites or selenium . In very acidic environments, hydrogen selenate ions, HSeO 4 - are formed in analogy to sulphates . Similar to sulfates, selenates often have a low solubility product in water.

Individual evidence

  1. ↑ H. Haas, M. Jansen: The first hexaoxoselenate (VI) - synthesis and characterization of Na 12 (SeO 6 ) (SeO 4 ) 3 . In: Journal for inorganic and general chemistry , 627 , 2001 , pp. 1313-1318 ( doi : 10.1002 / 1521-3749 (200106) 627: 6 <1313 :: AID-ZAAC1313> 3.0.CO; 2-T ).
  2. ↑ E. Riedel, Christoph Janiak: Inorganic Chemistry . 8th edition. de Gruyter, 2011, ISBN 3-11-022566-2 , p. 458 .