A New 2-D Organometallic Framework Constructed with Delocalizing π Electronic Trinuclear Units

Synthesis of Coordination Polymers and Discrete Complexes from the Reaction of Copper(II) Carboxylates with Pyrazole: Role of Carboxylates Basicity

“…38,42−47 Recently, derivatives containing the trinuclear triangular Cu II pyrazolate fragment have been reported as low-melting salts having controllable magnetic properties 48 or interesting magneto structural aspects 49 or have been employed as secondary building units (SBUs) to obtain multifunctional MOFs 50 or 2D bimetallic MOFs. 51 Continuing our studies, we report here on the results of the reactions of three select copper(II) carboxylates [2-furancarboxylate (Furc), formate (Form), and benzoate (Bnz), Chart 2], with Hpz in protic solvents. These syntheses were designed to finally determine the influence of carboxylates basicity on the reaction route and obtain new mono-or polynuclear Cu II species, possibly assembled to form CPs.…”

“…It is noteworthy that [Cu 3 (μ 3 -OH)­(μ-pz) 3 ] 2+ fragments have been employed as unusual synthons to generate polydimensional CPs, by connecting them through neutral N-donor ligands − or bicarboxylate anions. ,− Recently, derivatives containing the trinuclear triangular Cu II pyrazolate fragment have been reported as low-melting salts having controllable magnetic properties or interesting magneto structural aspects or have been employed as secondary building units (SBUs) to obtain multifunctional MOFs or 2D bimetallic MOFs …”