Synthesis, characterization, and properties of silica-supported trimethylphosphine disiloxy tantalum hydride, (≡SiO)2TaH(PMe3)

Mostafa Taoufik; Aimery De Mallamann; Eric Prouzet; Guillaume Saggio; Jean Thivolle-Cazat; Jean Marie Basset

doi:10.1021/om010188a

Synthesis, characterization, and properties of silica-supported trimethylphosphine disiloxy tantalum hydride, (≡SiO)₂TaH(PMe₃)

Mostafa Taoufik, Aimery De Mallamann, Eric Prouzet, Guillaume Saggio, Jean Thivolle-Cazat, Jean Marie Basset^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The silica-supported tantalum hydride (≡SiO)₂TaH reacts with PMe₃ to form a new well-defined surface species, the trimethylphosphine disiloxy tantalum hydride (≡SiO)₂TaH-(PMe₃). The Ta L_III-edge EXAFS gives a first coordination sphere of ca. two oxygen atoms at 1.955 Å and one phosphorus atom at 2.615 Å. The presence of the phosphine on the metal center cancels the catalytic activity of the tantalum hydride toward metathesis of acyclic alkanes but affords the oligomerization of ethylene into 1-butene and higher oligomers.

Original language	English (US)
Pages (from-to)	5518-5521
Number of pages	4
Journal	Organometallics
Volume	20
Issue number	26
DOIs	https://doi.org/10.1021/om010188a
State	Published - Dec 24 2001
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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title = "Synthesis, characterization, and properties of silica-supported trimethylphosphine disiloxy tantalum hydride, (≡SiO)2TaH(PMe3)",

abstract = "The silica-supported tantalum hydride (≡SiO)2TaH reacts with PMe3 to form a new well-defined surface species, the trimethylphosphine disiloxy tantalum hydride (≡SiO)2TaH-(PMe3). The Ta LIII-edge EXAFS gives a first coordination sphere of ca. two oxygen atoms at 1.955 {\AA} and one phosphorus atom at 2.615 {\AA}. The presence of the phosphine on the metal center cancels the catalytic activity of the tantalum hydride toward metathesis of acyclic alkanes but affords the oligomerization of ethylene into 1-butene and higher oligomers.",

author = "Mostafa Taoufik and {De Mallamann}, Aimery and Eric Prouzet and Guillaume Saggio and Jean Thivolle-Cazat and Basset, {Jean Marie}",

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doi = "10.1021/om010188a",

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T1 - Synthesis, characterization, and properties of silica-supported trimethylphosphine disiloxy tantalum hydride, (≡SiO)2TaH(PMe3)

AU - Taoufik, Mostafa

AU - De Mallamann, Aimery

AU - Prouzet, Eric

AU - Saggio, Guillaume

AU - Thivolle-Cazat, Jean

AU - Basset, Jean Marie

PY - 2001/12/24

Y1 - 2001/12/24

N2 - The silica-supported tantalum hydride (≡SiO)2TaH reacts with PMe3 to form a new well-defined surface species, the trimethylphosphine disiloxy tantalum hydride (≡SiO)2TaH-(PMe3). The Ta LIII-edge EXAFS gives a first coordination sphere of ca. two oxygen atoms at 1.955 Å and one phosphorus atom at 2.615 Å. The presence of the phosphine on the metal center cancels the catalytic activity of the tantalum hydride toward metathesis of acyclic alkanes but affords the oligomerization of ethylene into 1-butene and higher oligomers.

AB - The silica-supported tantalum hydride (≡SiO)2TaH reacts with PMe3 to form a new well-defined surface species, the trimethylphosphine disiloxy tantalum hydride (≡SiO)2TaH-(PMe3). The Ta LIII-edge EXAFS gives a first coordination sphere of ca. two oxygen atoms at 1.955 Å and one phosphorus atom at 2.615 Å. The presence of the phosphine on the metal center cancels the catalytic activity of the tantalum hydride toward metathesis of acyclic alkanes but affords the oligomerization of ethylene into 1-butene and higher oligomers.

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ER -

Synthesis, characterization, and properties of silica-supported trimethylphosphine disiloxy tantalum hydride, (≡SiO)₂TaH(PMe₃)

Abstract

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