High nuclearity structurally – related Mn supertetrahedral T4 aggregates

Abstract

Three new nanosized clusters and single molecule magnets ([Mn24] and [Mn23]) with uncommon supertetrahedral T4 – like Mn/O cores prepared from the combination of pdH2 with (py)2CO in Mn cluster chemistry are reported.

Heterometallic clusters based on an uncommon asymmetric “V-shaped” [Fe3+(μ-OR)Ln3+(μ-OR)2Fe3+]6+ (Ln = Gd, Tb, Dy, Ho) structural core and the investigation of the slow relaxation of the magnetization behaviour of the [Fe2Dy] analogue

“…In these reactions, (py) 2 CO has been used either as the main chelating/bridging ligand 39 or in combination with various polyols. 26,40 These studies afforded a series of homometallic Mn clusters including high nuclearity ones such as the [Mn 23 ] and [Mn 24 ] supertetrahedral T4 aggregates. 40 These investigations were also expanded to mixed metal 3d/4f systems and provided access to a family of Mn 4 Ln 2 (Ln = Dy, Gd, Tb) cross-shaped clusters.…”

“…26,40 These studies afforded a series of homometallic Mn clusters including high nuclearity ones such as the [Mn 23 ] and [Mn 24 ] supertetrahedral T4 aggregates. 40 These investigations were also expanded to mixed metal 3d/4f systems and provided access to a family of Mn 4 Ln 2 (Ln = Dy, Gd, Tb) cross-shaped clusters. 26 Further extension of this work involved the study of reactions between Fe 3+ and 4f sources with the ligand ( py) 2 CO.…”

Synthesis, Structure, and Optical‐response Magnetic Property of a Heteroarene‐azo Functionalized Mn19 Cluster

“…Stimulated by their prospective applications, the synthesis and properties of molecular magnetic materials have become a research hotspot. [ 1‐2 ] Undoubtedly, the study of metal cluster complexes [ 3‐10 ] is the most remarkable in this regard. In the last 30 years, a variety of magnetic clusters have been synthesized by serendipity or design.…”

Mixed‐Valence Manganese Carboxylate Clusters, {MnIII6MnII4}, {MnIII7MnII5Na}, and {MnIII7MnII5}, Derived from the Combined Use of Di‐2‐pyridyl Ketone with Selected Aliphatic Diols

“…These clusters, namely [Mn 24 ] and [Mn 23 ], possess supertetrahedral T4-like Mnoxo cores and contain the anions of both ligands employed in the synthetic process. [45] Herein, we report the syntheses, crystal structures, and magnetic properties of three new Mn complexes, namely [Mn 10 O 4 (OH) (3). These were produced from a reaction system that involved the simultaneous use of (py) 2 CO and specific aliphatic diols (1,3-propanediol (pdH 2 ) or 1,4-butanediol (1,4-bdH 2 )) in Mn carboxylate chemistry.…”