Synthesis, Characterization and Reactivity of Niobium(V)-2-tert-butylphenoxides

• Autorzy: Sharma N. , Sharma M. , Kumari M. , Chaudhry S. C.
• Języki publikacji: EN

Abstrakty

EN

The niobium(V)-2-butylphenoxides of composition [NbCl(OC6H4C(CH3)3-2)4] (I) and [Nb(OC6H4C(CH3)3-2)5] (II) have been synthesized by the reaction of NbCl5 with Me3SiOC6H4C(CH3)3-2 in CCl4 and have been characterized by elemental analyses, molar conductance, molecular weight determination, IR, 1H and 13C NMR and UV-VIS spectral studies. The molecular model calculations were performed to visualize the probable geometry acquired by the complexes. Based upon spectral and molecular modelling dynamics, a square-pyramidal geometry around niobium in complexes has been proposed. Thermal behaviour of the complexes has been studied by TG, DTA and DSC techniques. The reactions of [NbCl(OC6H4C(CH3)3-2)4] (I) with chloride ion accecptors – FeCl3 and PCl5 have yielded complexes of composition [Nb(OC6H4C(CH3)3-2)4]×[FeCl4] and [Nb(OC6H4C(CH3)3-2)4]×[PCl6] authenticated by physicochemical and IR data.

Słowa kluczowe

EN

niobium(V) complexes; trimethylsilyl-2-tert-butyl-phenoxide; iron(III) chloride; phosphorus(V) chloride

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2009
• Tom: Vol. 83, nr 9
• Strony: 1565--1573
• Opis fizyczny: Bibliogr. 28 poz., rys.

Twórcy

autor

Sharma N.

autor

Sharma M.

autor

Kumari M.

autor

Chaudhry S. C.

• Department of Chemistry, Himachal Pradesh Uni ver sity, Summer Hill, Shimla – 171005, India,

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