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Preparation and Ligand-exchange Reactions of Phosphinegold Ethynyl Complexes

DOI: 10.1039/DT9860000411

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 411 - 414 (1986)

Update date:2022-07-30

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Authors:

Cross, Ronald J.Cross, Ronald J.

Davidson, Michael F.Davidson, Michael F.

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Article abstract of DOI:10.1039/DT9860000411

Phosphinegold chlorides, , react readily with terminal alkynes RC*CH in ethanolic sodium ethoxide to produce high yields of ethynyl complexes .When R = H a second reaction leads to formation of .In a similar manner, the cyclopentadienyl complex can conveniently be made from , Na(OEt), and C5H6.The phosphine of rapidly exchanges in solutions with free phosphines.The compounds and > readily equilibrate with and >, a reaction which could also involve exchange of phosphines, but the exchange of Cl for C*CPh is another possible pathway.Phenylethynyl groups from exchange with both chlorides of HgCl2, cis-, and cis-.With the latter complex the exchange is non-stereospecific, unlike related reactions with organomercurials.

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