Article Dans Une Revue Crystal Growth & Design Année : 2019

Salts and Solvents Effect on the Crystal Structure of Imidazolium Dicarboxylate Salt Based Coordination Networks

Résumé

The solvothermal synthesis of novel metal–organic networks from the 1,3-bis(carboxymethyl)-imidazolium chloride ([H2L][Cl]) and cobalt or nickel salts (acetate or nitrate) in different solvents (water or ethanol and water/ethanol or water/ethylene glycol mixture) has been explored leading to four isotypic compounds of general formula [M(L)(H2O)4][Cl]·Solv with M = Ni or Co and Solv = H2O for 1 and 2, respectively, and M = Ni or Co and Solv = (EG)0.5 for 3 and 4, respectively, and two other isostructural compounds, namely, [Ni(L)(ox)0.5(μ2-H2O)0.5] (5) and [Co(L)(ox)0.5(μ2-H2O)0.5] (6) where the in situ formation of oxalate (ox) was observed. The structural characterizations evidence a significant influence of the solvent as well as of the metal salt on the structure and crystallinity of the final compounds, the former leading to observation of different magnetic behaviors. A one-dimensional antiferromagnetic behavior is thus observed in compounds 5 and 6 containing oxalate ligand while compounds 1–4 exhibited typical behavior of quasi-isolated magnetic species.

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hal-02325177 , version 1 (12-11-2020)

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Pierre Farger, Cédric Leuvrey, Guillaume Rogez, Michel François, Pierre Rabu, et al.. Salts and Solvents Effect on the Crystal Structure of Imidazolium Dicarboxylate Salt Based Coordination Networks. Crystal Growth & Design, 2019, 19 (8), pp.4264-4272. ⟨10.1021/acs.cgd.8b01725⟩. ⟨hal-02325177⟩
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