Summary.
A new modified approach for the synthesis of Mn12 clusters, based on the use of complex [Mn12O12(O2CtBu)16(H2O)4] (2) as starting material to promote the acidic ligand replacement, is presented here. This new synthetic approach allowed us to obtain complex [Mn12O12(O2CC6H4N(O•) tBu)16(H2O)4] (3), whose preparation remained elusive by direct replacement of the acetate groups of Mn12Ac (1). Complex 3 bearing open-shell radical units, was prepared to increase the total spin number of its ground state, and consequently, to increase T B , with the expectation that the radical ligands may couple ferromagnetically with the Mn12 core. Unfortunately, magnetic measurements of complex 3 revealed that the sixteen radical carboxylate ligands interact antiferromagnetically with the Mn12 core to yield a S = 2 magnetic ground state.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Corresponding author. E-mail: vecianaj@icmab.es
Received March 27, 2002; accepted May 2, 2002
Rights and permissions
About this article
Cite this article
Gerbier, P., Ruiz-Molina, D., Domingo, N. et al. Synthesis and Characterization of a [Mn12O12(O2CR)16(H2O)4] Complex Bearing Paramagnetic Carboxylate Ligands. Use of a Modified Acid Replacement Synthetic Approach. Monatshefte für Chemie 134, 265–276 (2003). https://doi.org/10.1007/s00706-002-0490-y
Issue Date:
DOI: https://doi.org/10.1007/s00706-002-0490-y