Structure and magnetic properties of one carboxylate-bridged one-dimensional polymer with linear trinuclear [Co3] cluster unit

A tetracobalt(ii) cluster with a two vertex truncated dicubane topology endogenously supported by carboxylate-based (2-pyridyl)methylamine ligands: magneto-structural and DFT studies

“…42 However, a slight deviation from linearity could be attributed to the non-correlation of the δ and γ angles with α , in addition to the non-equivalence of the Co( ii ) ions comprising the Co 4 entity. This correlation agrees with a magic α angle close to 98° proposed in the past and recently recovered by Li et al , 43 resulting in ferromagnetic interactions that become anti-ferromagnetic when this angle is exceeded. In coordination complexes, the presence of –OH and –OR connectors is typically accompanied by one or more carboxylate groups, which serve as bridge ligands and facilitate efficient magnetic coupling transmission.…”

Structures and luminescence properties of one co‐edge bi‐rhomboid [Zn6] based 1D stair‐stepping polymer and one quasi‐linear tetra‐nuclear [Cd4] cluster with orotic acid

“…[10][11][12][13] However, the design and synthesis of the MOCCs with excellent luminescent properties are still a great challenge because the resulting structures and performances are susceptible to many factors such as the nature of organic ligands and metal centers, temperature, pH values and solvents. [14][15][16][17][18] The d 10 metal ions of Zn(II) and Cd(II) with closed-shell electronic configuration were often used to prepare luminescent MOCCs which could display a variety of coordination numbers and avoid the attenuation or quenching of ligand-based emissions which was usually observed in the paramagnetic 3d systems. [15,19,20] In addition, a proper selection of organic ligands is also very important to build such luminescent materials.…”