A Three-Dimensional Homometallic Molecular Ferrimagnet

Abstract

Chains of fused NiII octahedral units form a 3D network and thereby the first example of a homometallic 3D ferrimagnet. The material was characterized by X‐ray analysis and a low‐temperature magnetic study. The structure features an infinite ‐Ni‐(μ3‐OH)‐Ni2‐ chain and the spin of adjacent Ni centers alternates between S=1 and S=2 (see picture).

Synthesis, crystal structure and luminescent property of the novel μ-thiocyanato-bis[(2-acetylpyridinethiosemicabazonato)(thiocyanate)] cadmium(II) complex

“…Transition metal-organic coordination polymers containing bridging ligands with diverse structures and properties are currently attracting increasing attention, not only due to their applications in the areas of catalysis, cooperative magnetic behaviour, non-linear optical activity and electrical conductivity, but also because of their interesting topologies and crystal packing motifs, as well as the fact that they may be designed with specific functionalities [1][2][3]. In addition to being robust and thermally stable, some exhibit photoluminiscent properties, a feature that has contributed to d 10 metal polynuclear complexes being investigated in search for new materials [4][5][6].…”

Synthesis, Crystal Structures, and Magnetic Properties of Two New 1D Copper(II) Coordination Polymers Containing Fumarate(−2) and Chelating N,N′-Donor as Ligands

“…Our current attention to the use of fumarate dianion as an organic coupler with which to obtain polymetallic complexes [1,4,13,14] is due to its versatile coordination mode (Scheme 1). We have recently reported a few fumaratebridged Cu II and Ni II systems.…”

“…We have recently reported a few fumaratebridged Cu II and Ni II systems. [13,14] Here we report the synthesis and structural characterization of two different kinds of copper() fumarate systems that make use of N-donor ligands Ϫ 2,2Ј-bipyridine (bpy) and N,N,NЈ,NЈ-tetramethyl- Here, fumarate coordinates in bis(monodentate) bridging fashion, and a weak antiferromagnetic interaction (300Ϫ2 K) is observed between the two Cu II centers. The attainment of magnetic ordering generally requires the organization of transition metal centers into three-dimensional networks, but reduced dimensionalities (one-and two-dimensional) are preferable for development of the necessary theoretical models required for better interpretation of the magnetic properties of three-dimensional coordination polymers.…”

Polynuclear Ni(II)/Co(II)/Mn(II) Complexes Based on Terphenyl–Tetracarboxylic Acid Ligand: Crystal Structures and Research of Magnetic Properties

“…Thus, metal carboxylates can construct magnetic superexchange pathways among the metal centers and form molecular magnets equipped with interesting magnetic behaviors of antiferromagnetism, ferromagnetism, spin canting, etal. [39][40][41][42][43][44] The coactions of the magnetic nature of the paramagnetic ions and superexchange interactions by the magnetic bridges will produce a significant effect on the magnetism of the entity. 45 Inspired by these ideas, our research interest focus on constructing various cluster-based frameworks with useful magnetic properties based on different paramagnetic metal centers and carboxylate functional groups.…”