Many of the metals that can form complexes with texaphyrins are metals that commonly exist in the +3-oxidation state, and part of the lanthanide series, however 12 main group metals form stable complexes as well in both the +2 and +3 oxidation state.
The variety of metals that can interact with texaphyrins often have a +3 charge, and are part of the lanthanide family, however 12 primary group metals demonstrate versatility by forming stable compounds in both the +2 and +3 oxidation states as well.