text: * pnictochalcogenides
  ** oxypnictides, including oxynitrides, oxyphosphides, oxyarsenides, oxyantimonides, oxybismuthides
  * chalcohalides or chalcogenide halides
  ** oxohalides, including oxyfluorides, oxychlorides, oxybromides, oxyiodides
  ** fluorosulfides
  ** sulfide chlorides, selenide chlorides, telluride chlorides
  ** sulfide bromides, selenide bromides, telluride bromides
  ** sulfide iodides, selenide iodides, telluride iodides
  * oxysulfides, oxyselenides
  * oxyhydrides
  * halopnictides
  ** fluoropnictides, including fluorophosphides, fluoroarsenides, fluoroantimonides, fluorobismuthides, arsenide chlorides