Magnetic Isolation of the Linear Trinuclear Anion in [Cu(Him)<sub>6</sub>] {Cu(Him)<sub>4</sub>[Cu(μ-EDTA)(Him)]<sub>2</sub>}·6H<sub>2</sub>O (1) as the Novel Imidazolium(+) Salt (H<sub>2</sub>im)<sub>2</sub>[Cu(Him)<sub>4</sub>{(µ-EDTA)Cu(Him)}<sub>2</sub>]·2H<sub>2</sub>O (2)-A Comparative Look to Their Crystal Structures, Thermal, Spectral and Magnetic Properties and DFT Calculations.
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ABSTRACT: Inspired by the reported crystal structure of compound 1, we aimed to synthesize and determine the structure of compound 2, where two imidazolium (H2im+) ions serve as diamagnetic countercations. Here, we report the thermal stabilities, FT-IR, visible, and RSE spectra, as well as the magnetic properties of both compounds. In these structures, µ-EDTA acts as a pentadentate chelator for both terminal Cu centers within the centrosymmetric linear trinuclear anion. The Cu(µ-EDTA) chelates bind to the central Cu(Him)4 unit in subtly different ways: in compound 1, µ-EDTA has a free acetate arm and binds the central Cu(II) center through a syn,anti-carboxylate group. In contrast, in compound 2, the non-chelating acetate arm serves as a m
SUBMITTER: Belmont-Sanchez JC
PROVIDER: S-EPMC11641978 | biostudies-literature | 2024 Dec
REPOSITORIES: biostudies-literature
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