Facile activation of hydrogen by an unsaturated platinum-osmium cluster complex

Richard D. Adams; Burjor Captain; Lei Zhu

doi:10.1021/ja0688272

Facile activation of hydrogen by an unsaturated platinum-osmium cluster complex

Richard D. Adams, Burjor Captain, Lei Zhu

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

17 Scopus citations

Abstract

The electronically unsaturated platinum-osmium complex Pt₂Os₃(CO)₁₀(P^tBu₃)₂, 3, has been obtained from the reaction of Os₃(CO)₁₀(NCMe)₂ with Pt(P^tBu₃)₂. Compound 3 adds hydrogen at 0 °C to yield the dihydrido complex Pt₂Os₃(CO)₁₀(P^tBu₃)₂(μ-H)₂, 4 (93% yield) within 10 min and subsequently the tetrahydrido complexPt₂Os₃(CO)₁₀(P^tBu₃)₂(μ-H)₄, 5, in 70% yield within 60 min. Compound 3 contains a trigonal bipyramidal cluster of five metal atoms having the two platinum atoms in the apical sites. With the addition of each equivalent of hydrogen, the trigonal bipyramidal cluster opens by series of Pt-Os bond cleavages that result in sequential shifts of the Pt groups to edges of the Os₃ triangle. The hydrogen addition process can be reversed partially at 25 °C by purging solutions of 5 with nitrogen.

Original language	English (US)
Pages (from-to)	2454-2455
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	129
Issue number	9
DOIs	https://doi.org/10.1021/ja0688272
State	Published - Mar 7 2007
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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title = "Facile activation of hydrogen by an unsaturated platinum-osmium cluster complex",

abstract = "The electronically unsaturated platinum-osmium complex Pt2Os3(CO)10(PtBu3)2, 3, has been obtained from the reaction of Os3(CO)10(NCMe)2 with Pt(PtBu3)2. Compound 3 adds hydrogen at 0 °C to yield the dihydrido complex Pt2Os3(CO)10(PtBu3)2(μ-H)2, 4 (93% yield) within 10 min and subsequently the tetrahydrido complexPt2Os3(CO)10(PtBu3)2(μ-H)4, 5, in 70% yield within 60 min. Compound 3 contains a trigonal bipyramidal cluster of five metal atoms having the two platinum atoms in the apical sites. With the addition of each equivalent of hydrogen, the trigonal bipyramidal cluster opens by series of Pt-Os bond cleavages that result in sequential shifts of the Pt groups to edges of the Os3 triangle. The hydrogen addition process can be reversed partially at 25 °C by purging solutions of 5 with nitrogen.",

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T1 - Facile activation of hydrogen by an unsaturated platinum-osmium cluster complex

AU - Adams, Richard D.

AU - Captain, Burjor

AU - Zhu, Lei

PY - 2007/3/7

Y1 - 2007/3/7

N2 - The electronically unsaturated platinum-osmium complex Pt2Os3(CO)10(PtBu3)2, 3, has been obtained from the reaction of Os3(CO)10(NCMe)2 with Pt(PtBu3)2. Compound 3 adds hydrogen at 0 °C to yield the dihydrido complex Pt2Os3(CO)10(PtBu3)2(μ-H)2, 4 (93% yield) within 10 min and subsequently the tetrahydrido complexPt2Os3(CO)10(PtBu3)2(μ-H)4, 5, in 70% yield within 60 min. Compound 3 contains a trigonal bipyramidal cluster of five metal atoms having the two platinum atoms in the apical sites. With the addition of each equivalent of hydrogen, the trigonal bipyramidal cluster opens by series of Pt-Os bond cleavages that result in sequential shifts of the Pt groups to edges of the Os3 triangle. The hydrogen addition process can be reversed partially at 25 °C by purging solutions of 5 with nitrogen.

AB - The electronically unsaturated platinum-osmium complex Pt2Os3(CO)10(PtBu3)2, 3, has been obtained from the reaction of Os3(CO)10(NCMe)2 with Pt(PtBu3)2. Compound 3 adds hydrogen at 0 °C to yield the dihydrido complex Pt2Os3(CO)10(PtBu3)2(μ-H)2, 4 (93% yield) within 10 min and subsequently the tetrahydrido complexPt2Os3(CO)10(PtBu3)2(μ-H)4, 5, in 70% yield within 60 min. Compound 3 contains a trigonal bipyramidal cluster of five metal atoms having the two platinum atoms in the apical sites. With the addition of each equivalent of hydrogen, the trigonal bipyramidal cluster opens by series of Pt-Os bond cleavages that result in sequential shifts of the Pt groups to edges of the Os3 triangle. The hydrogen addition process can be reversed partially at 25 °C by purging solutions of 5 with nitrogen.

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Facile activation of hydrogen by an unsaturated platinum-osmium cluster complex

Abstract

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