Synthesis and characterization of Cu(I) and Zn(II) complexes with new sulfur-bearing isoxazole- or pyrazole-based ligands
2015; Elsevier BV; Volume: 55; Linguagem: Inglês
10.1016/j.inoche.2015.03.007
ISSN1879-0259
AutoresNeudo Urdaneta, Vanessa R. Landaeta, Rafael E. Rodríguez‐Lugo, Carlos Dı́az, Gustavo Santiso‐Quiñones, Jairo Quiroga, Braulio Insuasty,
Tópico(s)Metal-Organic Frameworks: Synthesis and Applications
ResumoThe synthesis of the new ligands 6-(5-methyl-1,2-oxazol-3-yl)-2,3-dihydro-5H-[1,4] dithiino[2,3-c]pyrrole-5,7(6H)-dione (isox′) and 6-(3-methyl-1H-pyrazol-5-yl)-2,3-dihydro-5H-[1,4]dithiino[2,3-c]pyrrole-5,7(6H)-dione (pyraz′) and their coordination chemistry toward Cu(I) and Zn(II), was studied. The ligands and their complexes were characterized using a combination of either multinuclear NMR (1H and 13C{1H}), HRMS, FTIR or Uv–Vis spectroscopy. The solid state structures of ligand isox′ and complexes [Cu(pyraz′)2]OTf and [Zn(OOCCF3)2(pyraz′)2] were determined. Interestingly, isox′ presents a yellow luminescence in its free form. Additionally, the ability of isox′ to coordinate as an N–O bidentate ligand or as an N–S bridge between two copper centers, forming a coordination polymer, is studied. The solid state structure of this Cu(I)-isox′ 1D coordination polymer is also reported.
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