Publications by authors named "Elvis Robles-Marin"
Two nickel complexes supported by tridentate NS ligands, [Ni (κ-N,S,S,S'-N {CH (MeC H R')S} ) ] (1; R'=3,5-(CF ) C H ) and [Ni (κ-N,S,S,S'-N {CH C H S} ) ] (2), were prepared as bioinspired models of the active site of [NiFe] hydrogenases. The solid-state structure of 1 reveals that the [Ni (μ-ArS) ] core is bent, with the planes of the nickel centers at a hinge angle of 81.3(5)°, whereas 2 shows a coplanar arrangement between both nickel(II) ions in the dimeric structure.
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- Researchers synthesized iron and molybdenum complexes using a pincer-type dianionic [NS2]2- donor to explore their properties.
- The [NS2]2Mo(iv) complex (2) was able to oxidize methanol and isopropanol to formaldehyde and acetone, demonstrating a significant redox behavior not seen in the similar iron complex [NS2][NHS2]Fe(iii) (1).
- Electrochemical studies showed distinct redox processes for molybdenum, including cyclic voltammetry revealing a quasi-reversible Mo(iv)/Mo(v) couple and two irreversible reductions, with evidence of catalytic activity for proton reduction when combined with p-toluenesulfonic acid.
Tripodal ligands designed to generate a local C3 symmetry have resulted in novel types of metal complexes that feature unusual bonding and electronic properties. However, most complexes reported to date are characterised by strong field ligands that enforce low or intermediate-spin states for the metal centres. Moreover, anionic sulfur-based tripodal ligands are particularly scarce due to their challenging synthesis.
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