Publications by authors named "Noemi Andrade-Lopez"
Article Synopsis
- Three dinuclear zinc(II) acetate complexes were synthesized by reacting specific pyridin-2-yl benzothiazoline precursors with zinc acetate, resulting in distinct complexes that feature different coordination environments.
- The complexes displayed a unique coordination mode with Schiff base ligands, forming multiple chelate rings and various bridging acetate configurations between zinc ions.
- Structural analysis revealed that complex 4 has a different coordination geometry (halfway between trigonal bipyramidal and square pyramidal) compared to complexes 5 and 6, which exhibit distorted square pyramidal geometries.
Synthesis of organotin(IV) heterocycles containing a xanthenyl group by a Barbier approach via ultrasound activation: synthesis, crystal structure and Hirshfeld surface analysis.
J Viridiana García-González José G Alvarado-Rodríguez Noemí Andrade-López Esmeralda Zamora-Martínez Vojtech Jancik
Acta Crystallogr C Struct Chem
August 2024
Article Synopsis
- A new series of organotin compounds with different organic groups (methyl, n-butyl, benzyl, and phenyl) was synthesized using a sonochemistry-assisted reaction.
- The chemical structure and coordination of the central tin atom were confirmed through Sn{H} NMR and X-ray diffraction studies, revealing a four-coordinated environment in solution and a specific boat-chair conformational arrangement in the solid state.
- Analysis indicated that these eight-membered heterocycles are stabilized by weak noncovalent interactions, primarily driven by dispersion forces.
Article Synopsis
- The Ir(i) complexes [TpIr(η-1,4-diene)] 2b and 2c undergo thermal reactions with various aromatic aldehydes, resulting in the creation of metallabicyclic compounds 4e-k and Fischer-type carbenes 5a-b with moderate yields.
- These reactions start with the formation of η-aldehyde adducts, leading to metallabicyclic compounds through decarboxylation and ortho metallation of the aromatic ring, while the synthesis of Fischer-type carbenes involves rearranged intermediates without decarboxylation.
- The treatment of complex 2b with Lewis bases alters the diene ligand's binding mode, producing various Ir(
Article Synopsis
- The reaction of the iridium complex [Tp(Me2)Ir(C2H4)2] with 2,4-pentanedione at 70 °C produces a main product, the Ir(iii) complex [Tp(Me2)Ir(acac)(C2H5)], along with two less abundant side complexes.
- The proposed reaction mechanism involves the formation of an 18-electron intermediate that can lead to various complexes through processes such as hydrogen insertion or β-hydride elimination.
- The resulting iridium compounds show stability in air and moisture, and their structures have been confirmed using techniques like NMR, IR, and X-ray diffraction.