Synthesis of Titanium and Zirconium Complexes with 2-Pyridonate and 2, 6-Pyridinedithiolate Ligands
Resumen: Treatment of complex Cp2TiCl2] with the lithium salt of 2-hydroxypyridine afforded complex Cp2Ti(Opy)2] (1), whereas the same synthetic strategy applied to the analogous zirconium compound Cp2ZrCl2] did not worked. However, the use of the metallocene Cptt 2ZrMe2] with protic ligands allowed directing the reactivity towards protonation of the methyl groups attached to zirconium. To check this approach we reacted Cptt 2ZrMe2] with methanol affording complex Cptt 2ZrMe(OMe)] (2), which was characterized in situ by NMR techniques. In the same line, the reaction of Cptt 2ZrMe2] with 2-hydroxypyridine gave complex Cptt 2Zr(Me)(Opy)] (3)//forcing the conditions of this reaction did not lead to the expected complex Cptt 2Zr(Opy)2], most probably due to the steric hindrance exerted by the bulky cyclopentadienyl ligands. Further reactions of complex 3 with ligands having acidic protons also led to the recovery of the starting complex. However, when shifting to the bifunctional ligand 2, 6-dimercaptopyridine py(SH)2] a double protonation of the methyl ligands in Cptt 2ZrMe2] occurred, allowing the isolation of mononuclear complex Cptt 2Zr(¿S, ¿S, ¿N-pyS2)] (4), upon evolution of methane. The molecular structure of complex 4 was determined by X-ray methods, showing the zirconium atom in a highly distorted trigonal bipyramidal arrangement//structural parameters indicate a conventional Zr-N bond, but rather weak Zr-S interactions.
Idioma: Inglés
DOI: 10.1002/zaac.201500566
Año: 2015
Publicado en: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE 641, 12-13 (2015), 2115-2121
ISSN: 0044-2313

Factor impacto JCR: 1.261 (2015)
Categ. JCR: CHEMISTRY, INORGANIC & NUCLEAR rank: 31 / 46 = 0.674 (2015) - Q3 - T3
Factor impacto SCIMAGO: 0.454 - Inorganic Chemistry (Q3)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E07
Financiación: info:eu-repo/grantAgreement/ES/DGA/E70
Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio/CSD2009-0050
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2012–35665
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2013-42532-P
Tipo y forma: Artículo (PostPrint)
Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)

Derechos Reservados Derechos reservados por el editor de la revista


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