Synthesis and Reactivity of Monocyclopentadienyltantalum(V) Siloxide Complexes | Zendy

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Synthesis and Reactivity of Monocyclopentadienyltantalum(V) Siloxide Complexes

Author(s) -

Conde Ana,

Fandos Rosa,

Otero Antonio,

Rodríguez Ana,

Terreros Pilar

Publication year - 2008

Publication title -

european journal of inorganic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 1434-1948

DOI - 10.1002/ejic.200800229

Subject(s) - chemistry , isocyanide , tantalum , reactivity (psychology) , cationic polymerization , medicinal chemistry , yield (engineering) , stereochemistry , organic chemistry , metallurgy , medicine , materials science , alternative medicine , pathology

The new tantalum siloxide complex [TaCp*Me 3 (OSiPh 3 )] ( 1 ; Cp* = η 5 ‐C 5 Me 5 ) has been synthesized. The reaction of complex 1 with isocyanides yields the respective azatantalacyclopropanes [TaCp*(η 2 ‐Me 2 CNxylyl)Me(OSiPh 3 )] ( 2 ; xylyl = 2,6‐dimethylphenyl) and [TaCp*(η 2 ‐Me 2 CN t Bu)Me(OSiPh 3 )] ( 3 ). The molecular structure of complex 2 has been established by X‐ray diffraction. Complex 2 reacts with a second mol‐equiv. of 2,6‐xylyl isocyanide to yield [TaCp*(Nxylyl)[N(xylyl)CMe=CMe 2 )(OSiPh 3 )] ( 4 ). The reaction of 1 with carbon monoxide gives [TaCp*(O)(OCMe=CMe 2 )(OSiPh 3 )] ( 5 ), whereas 1 reacts with B(C 6 F 5 ) 3 to give the corresponding cationic compound [TaCp*Me 2 (OSiPh 3 )][MeB(C 6 F 5 ) 3 ] ( 6 ). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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