Esta Memoria pretende efectuar una contribución al estudio de los compuestos de coordinación no clásicos y a los compuestos organometálicos de los elementos molibdeno y wolframio en diversos estados de oxidación, fundamentalmente cero, dos y cuatro.
Molybdenum-catalysed deoxydehydration (DODH) of vicinal diols to alkenes has been investigated using density functional theory (DFT). In particular, the mechanism of DODH of diols using a phosphane as a reductant and a [Mo(O)2(QR)2] complex (QR = acylpyrazolonate ligand) as a catalyst has been studied. This reaction was the first description of...
No description
Based on the isolobal analogy of ZnCp (Cp = η5-C5H5) and ZnR (R = alkyl or aryl group) fragments with hydrogen atom and fragment [Zn(CO)2] with a CH2 carbene, the following complexes [(ZnCp)2{µ-Zn(CO)2}], 1, [(ZnPh)2{µ-Zn(CO)2}], 2, [(ZnPh){µ-Zn(CO)2}(ZnCp)], 3, [(ZnCp)2{µ-Zn2(CO)4}], 4, [(ZnPh)2{µ-Zn2(CO)4}], 5, [(ZnPh){µ-Zn(CO)2}2(ZnCp)], 6,...
Imido ligands have been widely used as stabilizing ligands in highoxidationstate transition metal complexes. Their chemistry has experienced a remarkable growth due to the role they play in many important reactions. Following our interest in this area, we have extended our recent results in the synthesis of bis(imido) complexes of molybdenum,...
The first examples of stable metal complexes with coordinated ethylene and carbon dioxide ligands are reported. Reaction of tris(ethylene) complexes mer-M(C2H4)3(PNP) (M = Mo and W; PNP = 2,6-bis(diphenylphosphinomethyl)pyridine) with CO2 yields the corresponding, mixed cis-M(C2H4)2(CO2)(PNP) derivatives. X-ray studies reveal six-coordinate...