text: A number of these anions known. Some have attracted interest as components in fast ion conductors for use in solid state batteries. The binary thiophosphates do not exhibit the extensive diversity of the analogous oxyanions but contain similar structural features, for example P is 4 coordinate, P−S−P links form and there are P−P bonds. One difference is that ions may include polysulfide fragments of 2 or more S atoms whereas in the P−O anions there is only the reactive −O−O−, peroxo, unit. 
  * is the analogue of the nitrate ion,  (there is no  analogue); it was isolated as the yellow tetraphenylarsonium salt
  * is the sulfur analogue of , and like  is tetrahedral.
  * the pyrothiophosphate ion consisting of two corner sharing PS tetrahedra, analogous to the pyrophosphates.
  * An ion which can be visualised either as two PS tetrahedra joined by a disulfide link or a pyrothiophosphate where the bridging −S− is replaced by −S−.
  * edge-shared bitetrahedral structure. The structure is therefore similar to the isoelectronic AlCl dimer. The oxygen analogue, dimetaphosphate , in contrast, is not known, the metaphosphates favour polymeric structures of chains or rings. 
  * and  are related to  but their two bridging −S− atoms are replaced by −S−S− in  and by an −S−S−S− bridge in .
  *PS These form water-stable salts. The anion has an ethane-like structure and contains a P−P bond. The formal oxidation state of phosphorus is +4. The oxygen analogue is the hypodiphosphate anion, hypophosphoric acid|.
  * contains a six-membered PS ring. The ammonium salt is produced by reaction of PS in liquid ammonia. Another way of visualising the structure is that it is the PS adamantane (PO) structure with a PS vertex removed.
  * contains a square P ring,  contains a P ring and  a P ring. These  cyclic anions contain P with an oxidation state +3. Note they are not trigonal as arsenic(III) is in arsenites, but are tetrahedral with two bonds to other phosphorus atoms and two to sulfur. The  anion is analogous to the  ring anion.
  * An unusual butterfly-shaped ion, SP(P)PS, which can be visualised as a P molecule where two P−S bonds replace one P−P bond.
  * is a sulfido heptaphosphane cluster anion.