10.1021/ic8002492.s001
Marta Viciano-Chumillas
Marta
Viciano-Chumillas
Stefania Tanase
Stefania
Tanase
Ilpo Mutikainen
Ilpo
Mutikainen
Urho Turpeinen
Urho
Turpeinen
L. Jos de Jongh
L.
Jos de Jongh
Jan Reedijk
Jan
Reedijk
Mononuclear Manganese(III) Complexes as Building Blocks for the Design of Trinuclear Manganese Clusters: Study of the Ligand Influence on the Magnetic Properties of the [Mn<sub>3</sub>(μ<sub>3</sub>-O)]<sup>7+</sup> Core
American Chemical Society
2008
Trinuclear Manganese Clusters
ligand
metal ions
antiferromagnetic intramolecular interactions
hydroxyphenyl
H 2phpzMe
complexes 1
Mn
Complexe
susceptibility studies
intramolecular interactions
Building Blocks
Ligand Influence
Magnetic Properties
H 2phpzH
crystal structure
terminal positions
manganese
2008-07-07 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Mononuclear_Manganese_III_Complexes_as_Building_Blocks_for_the_Design_of_Trinuclear_Manganese_Clusters_Study_of_the_Ligand_Influence_on_the_Magnetic_Properties_of_the_Mn_sub_3_sub_sub_3_sub_O_sup_7_sup_Core/2929441
The synthesis, crystal structure, and magnetic properties of three new manganese(III) clusters are reported, [Mn<sub>3</sub>(μ<sub>3</sub>-O)(phpzH)<sub>3</sub>(MeOH)<sub>3</sub>(OAc)] <b>(1)</b>, [Mn<sub>3</sub>(μ<sub>3</sub>-O)(phpzMe)<sub>3</sub>(MeOH)<sub>3</sub>(OAc)]·1.5MeOH <b>(2)</b>, and [Mn<sub>3</sub>(μ<sub>3</sub>-O)(phpzH)<sub>3</sub>(MeOH)<sub>4</sub>(N<sub>3</sub>)]·MeOH <b>(3)</b> (H<sub>2</sub>phpzH = 3(5)-(2-hydroxyphenyl)-pyrazole and H<sub>2</sub>phpzMe = 3(5)-(2-hydroxyphenyl)-5(3)-methylpyrazole). Complexes <b>1</b>−<b>3</b> consist of a triangle of manganese(III) ions with an oxido-center bridge and three ligands, phpzR<sup>2−</sup> (R = H, Me) that form a plane with the metal ions. All the complexes contain the same core with the general formula [Mn<sub>3</sub>(μ<sub>3</sub>-O)(phpzR)<sub>3</sub>]<sup>+</sup>. Methanol molecules and additional bridging ligands, that is, acetate (complexes <b>1</b> and <b>2</b>) and azide (complex <b>3</b>), are at the terminal positions. Temperature dependent magnetic susceptibility studies indicate the presence of predominant antiferromagnetic intramolecular interactions between manganese(III) ions in <b>1</b> and <b>3</b>, while both antiferromagnetic and ferromagnetic intramolecular interactions are operative in <b>2</b>.