Variation in the electron count and ground state of [Mn12O12(O2CR)16(H2O)4](R = Me or Ph) by metal substitution and redox changes: preparation and properties of [Mn8Fe4O12(O2CMe)16(H2O)4]·4H2O·2MeCO2H and [NPrn4][Mn12O12(O2CPh)16(H2O)4]·H2O

Abstract

As a means of varying the electron count of complexes [Mn₁₂O₁₂(O₂CR)₁₆(H₂O)₄](1; R = Me or Ph), the aggregates [Mn₈Fe₄O₁₂(O₂CMe)₁₆(H₂O)₄]2 and [NPrⁿ₄][Mn₁₂O₁₂(O₂CPh)₁₆(H₂O)₄]3 have been prepared; magnetochemical measurements confirm that the unusual of properties 1 can be significantly altered by ‘conversion’ to 2 and 3.