A Novel Heterobimetallic Layered Compound Showing Ferrimagnetism

Abstract

Tethering manganese(II) and copper(II) ions with the dianion of (bis(methylthio)methylidene)malonic acid gives a two‐dimensional ferrimagnetic layer compound. The layers are stacked with sulfur‐sulfur interactions between the methylthio side arms; a section from the crystal structure is shown on the right.

High-Dimensional Manganese(II) Compounds with Noncovalent and/or Covalent Bonds Derived from Flexible Ligands: Self-Assembly and Structural Transformation

“…Increasing attention has been paid to the construction of two-dimensional (2D) or three-dimensional (3D) magnetic systems in order to gain a better understanding of the correlation between structure and magnetism . One strategy to build a spatially well-spanned framework, among others, is to utilize certain features of potentially bridging ligands, such as conformational flexibility, versatile binding modes, and the ability to form hydrogen bonds.…”

Hydrogen- and Covalent-Bond-Linked 3D Manganese Array

“…There has been considerable interest in the study of magnetically coupled metal complexes with extended structures on account of their promising application in the field of molecular magnetism. − In order to build a spatially well-spanned framework, certain features of the bridging ligands which connect paramagnetic metal centers and mediate superexchange interactions between them can be utilized since they can play an important role in the molecular arrangement in a crystal. For example, the conformational flexibility, the versatile binding mode, and the ability to form hydrogen bonds are cases in point.…”

The First (μ-Oxo)diferric Chain Complex: Structure and Magnetic Properties of [Fe2(tren)2(mtm)O]n(CF3SO3)nCln

“…As part of pursuing this matter, we have explored the use of [bis(methylthio)methylene]malonate ()mtm) as a bridging ligand in developing one-, two-, or three-dimensional metal complex systems and mtm has led to the formation of a novel heterobimetalic layered compound [MnCu(mtm) 2 (H 2 O) 2 (CH 3 -OH) 2 ] n showing ferrimagnetism. 5 We have also found that by using mtm and tris(2-aminoethyl)amine ()tren) as the bridging and end-capping ligands, respectively, the hitherto unprecedented polymeric (µ-oxo)diferric chain complex [Fe 2 (tren) 2 -(mtm)O] n (CF 3 SO 3 ) n (Cl) n (1) can be obtained. We wish to report here accounts of synthesis, structure, and magnetic properties of this molecular "ferric train".…”

“…Particularly, the structural variety and novelty of these polynuclear iron complexes seemed to be determined by types of bridging and end-capping ligands, raising the engaging question as to the role of these ligands in controlling the speciation of iron. As part of pursuing this matter, we have explored the use of [bis(methylthio)methylene]malonate (=mtm) as a bridging ligand in developing one-, two-, or three-dimensional metal complex systems and mtm has led to the formation of a novel heterobimetalic layered compound [MnCu(mtm) 2 (H 2 O) 2 (CH 3 OH) 2 ] n showing ferrimagnetism . We have also found that by using mtm and tris(2-aminoethyl)amine (=tren) as the bridging and end-capping ligands, respectively, the hitherto unprecedented polymeric (μ-oxo)diferric chain complex [Fe 2 (tren) 2 (mtm)O] n (CF 3 SO 3 ) n (Cl) n ( 1 ) can be obtained.…”