Synthesis, structure and magnetic properties of two new coordination polymers with carboxylate-substituted benzoimidazole ligands

Abstract

This paper reports two new coordination polymers formed by carboxylate-substituted benzoimidazole and formate ligands: [Mn(L)·(HCO 2 )] n (1) and [Co(L)·(HCO 2 )] n (2) (L = benzoimidazol-1-yl-acetate). Complexes 1 and 2 are isomorphous and adopt a new 3,6-connected three-nodal topology showing interesting magnetic properties: spin canted antiferromagnetism for MnⅡ complex 1, but simple antiferromagnetic coupling for Co Ⅱ complex 2.carboxylate-substituted benzoimidazole, formate, magnetic property, synthesis, structure

Construction of Isomorphous Coordination Polymers with 2‐(3‐(pyridin‐2‐yl)‐1H‐pyrazol‐1‐yl) acetate Ligand: Structures, Fluorescent Temperature Sensing, and Magnetic Properties

“…The magnetic susceptibility of 3 above 18 K obeys well with the Curie‐Weiss law with C=1.89 cm 3 K mol −1 and θ =−64.02 K (Figure 12b). The negative θ value demonstrates the existence of antiferromagnetic interaction between Ni(II) ions, which can be further proved by the M−H curve (Figure S5) at 2.0 K [42] …”

Structural Modulation of Coordination Polymers by Heterometallic Approach

“…The M vs. H plots at 2.0 K also confirms antiferromagnetic coupling in compounds 3 – 5 and 7 (Figure S4, Supporting Information). The negative Weiss constants of 3 – 7 indicate the antiferromagnetic interaction (Table and Figure S2, Supporting Information) …”

Three interpenetrated copper(II) coordination polymers based on a V-shaped ligand: Synthesis, structures, sorption and magnetic properties

“…The syn,syn carboxlate group mediated antiferromagnetic coupling weaken the ferromagnetic interaction between Cu1 and Cu1B. The long ligands only provided neglectable antiferromagnetic interactions intercluster [30][31][32][33].…”