The present invention relates to electron active compounds and {HEAD ~ compositions} that have {TAIL ~ polyvalent cations} in their crystal lattices 
have
The present invention relates to electron active compounds and { HEAD ~ compositions } that have { TAIL ~ polyvalent cations } in their crystal lattices
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH