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Synthesis and Crystal Structure of . Hydrogenation-Dehydrogenation Reactions of Dienes and Alcohols with Heterogeneous Catalysts derived from

DOI: 10.1039/DT9890001477

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1477 - 1482 (1989)

Update date:2022-08-17

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Authors:

Castagno, FabrizioCastagno, Fabrizio

Castiglioni, MarioCastiglioni, Mario

Sappa, EnricoSappa, Enrico

Tiripicchio, AntonioTiripicchio, Antonio

Camellini, Marisa TiripicchioCamellini, Marisa Tiripicchio

et al.et al.

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Article abstract of DOI:10.1039/DT9890001477

The complex 2(μ-Cu(PPh3))(CO)9> has been synthesized in tetrahydrofuran (thf) by reaction of the anion 2(CO)9>-, generated in situ from 3(CO)9> and NaH, with <(Cu(PPh3)Br)4>.Its structure has been determined by X-ray methods.Crystals are triclinic, space group P(*) with Z = 2 in a unit cell of dimensions a = 13.643(7), b = 14.120(6), c = 9.504(4) Angstroem, α = 94.88(3), β = 105.77(4), and γ = 102.15(3) deg.The structure has been solved from diffractometer data by direct and Fourier methods and refined by full-matrix least squares to R = 0.0462 for 2 191 observed reflections.The metal cluster can be described as a NiOs3 tetrahedron with an Os-Os edge bridged by the Cu atom from the Cu(PPh3) group.This complex, supported on Chromosorb and thermally activated under H2, forms a heterogeneous catalyst for the hydrogenation-dehydrogenation of several substrates, in particular alcohols.The behaviour of this catalyst is significantly different from that of systems derived from the parent cluster or from .In particular, it shows high dehydrogenation ability.

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Product name:2-Isopropoxypropane

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