A Three-Dimensional Complex with a One-Dimensional Cobalt-Hydroxyl Chain Based on Planar Nonanuclear Clusters Showing Spin-Canted Antiferromagnetism

Abstract

A new three-dimensional magnetic network, [Co9(OH)6(C42H24O18P3N3)2(H2O)8] (1), has been successfully prepared by utilizing the flexible hexacarboxylate ligand derived from cyclotriphosphazene, which had been characterized by single-crystal X-ray diffraction and magnetic measurement. This compound consists of one-dimensional (1D) cobalt-hydroxyl chains based on planar nonanuclear clusters, which are located in the b-c plane to form the nearly two-dimensional cobalt layer. Magnetic measurements reveal that 1 shows spin-canted antiferromagnetism with spin-glass behavior. These results suggest that reasonable design and choice of large carboxylate ligand based on a specific scaffold could be effective for the construction of magnetic materials based on a novel 1D magnetic chain.

Multisite Coordination Ligands on Cyclotriphosphazene Core for the Assembly of Metal Clusters and Porous Coordination Polymers

“…Few years back, Li and co‐workers have explored the haxacarboxylate ligand 188 (Figure 9) based on CTP designed to generate the various dimensional coordination polymers 195 – 200 with variety of metal salts (Figure 10, 11). [30,32,34,132,133] …”

“… 3D structures of coordination polymers ( 198 – 200 ). 198 ‐Reproduced with permission from Ref [133] . Copy right 2015, American Chemical Society.…”

“…The compound 198 is another novel 3D magnetic coordination polymer containing 1D cobalt‐hydroxyl chain, where all these cobalt(II) ions exhibit the hexa‐coordination mode and the coordination arises from six oxygen atoms. Apart from the Co 4 atoms, all other coordination spheres could be noticed to be slightly distorted octahedral geometry [133] …”

Structures and magnetic properties of two heterometallic Cu(ii)–Cd(ii) polymers exhibiting antiferromagnetic ordering

“…6–8 The magnetic properties of CPs are diverse and closely related to the ligand field and magnetic exchange pathways between the neighboring spins, which are susceptible to their chemical components and structural features. 9–12 A deep view of magneto-structural correlations for CPs is very important, which may result in a better understanding and discovery of fundamental and new magnetic phenomena in molecular materials and direct the assembly of molecular magnets with specific properties. 13,14 The CPs with a low dimensional topology or isolated polynuclear cluster units can help to better understand the magneto-structural correlations.…”

Solvent-dependent structural diversity of cadmium(II) coordination polymers: syntheses, characterizations, and luminescence properties

“…Meanwhile, CPs exhibit attractive properties and can be used in gas storage and separation, nonlinear optics, catalysis, magnetism, luminescence, drug delivery, sensing, and detection [1][2][3][4][5][6][7][8][9][10]. Many factors can influence construction of CPs, e.g., metal ions, ligands, solvents, pH, reaction temperatures, etc.…”