Welcome to LookChem.com Sign In|Join Free

Article Doi

Reactions of the Co-ordinatively Unsaturated Cluster with Alkynes RCCR (R = Ph, C6H4Me, Me or CF3); Crystal Structures of 3-η2()-RC2R)(Ph2PCH2PPh2)> (R = Me or CF3) and Electrochemical Behaviour of Triosmium-Alkyne Clusters

DOI: 10.1039/DT9930000827

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 827 - 834 (1993)

Update date:2022-09-26

Topics:

Authors:

Brown, Michael P.Brown, Michael P.

Dolby, P. AnnDolby, P. Ann

Harding, Marjorie M.Harding, Marjorie M.

Mathews, A. JaneMathews, A. Jane

Smith, Anthony K.Smith, Anthony K.

et al.et al.

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1039/DT9930000827

Treatment of the unsaturated triosmium cluster 1 with diphenylacetylene leads to the formation of 2a in which the alkyne is bonded in a μ3-η2 (<*>) mode.Addition of CO to 2a gives 3a (R = Ph) in which the alkyne is bonded in a μ3-η2 (<*>) mode.Two-electron electrochemical reduction of 2a also causes this change in co-ordination mode of the alkyne ligand.Protonation of the electrochemically produced dianion 3-η2(<*>)PhC2Ph)(Ph2PCH2h2)>(2-) gives 3-η2(<*>)PhC2Ph)(PhPCH2PPh2)> 4.Th e same product 4 has also been obtained by direct hydrogenation of 2a.A similar chemical and electrochemical behaviour is observed for the ditolylacetylene derivative 2b, where the two p-methyl substituents are diagnostic in 1H NMR spectroscopy.With the alkynes RCCR (R = Me or CF3), analogous complexes to 2 are not observed, instead complexes 3-η2(<*>)-RR)(Ph2PCH2PPh2)> 3c (R = Me) and 3d (R = CF3) are obtained.Single-crystal X-ray structure determinations of 3c and 3d have been performed.

View More

Products guided by the article

Product name:{Os3(CO)7(CH3C6H4C2C6H4CH3)((C6H5)2PCH2P(C6H5)2)}

Cas No:148722-06-9

148722-06-9

R&D Labs maybe for 148722-06-9

Relevant to this article

Hot Product