Show simple item record

dc.contributor.authorLucas, NT
dc.contributor.authorHumphrey, MG
dc.contributor.authorHealy, PC
dc.contributor.authorWilliams, ML
dc.date.accessioned2017-05-03T13:38:06Z
dc.date.available2017-05-03T13:38:06Z
dc.date.issued1997
dc.date.modified2009-08-25T03:45:11Z
dc.identifier.issn0022-328X
dc.identifier.doi10.1016/S0022-328X(97)00346-X
dc.identifier.urihttp://hdl.handle.net/10072/15591
dc.description.abstractReactions of Cp2Mo2Ir2(CO)10 (1) with stoichiometric amounts of phosphines afforded the substitution products Cp2Mo2Ir2(CO)10-xLx (L = PPh3, x = 1 (5), 2 (6); L = PMe3, x = 1 (7), 2 (8)), in fair to excellent yields (36-78%), shown by low temperature 31P NMR to consist of mixtures of interconverting isomers. An X-ray structural study of Cp2Mo2Ir2(孃O)3(CO)6(PMe3) (7a), one isomer of 7, revealed that the PMe3 ligand occupies the electronically-preferred axial site (with respect to the plane of the bridging carbonyls). Geometries of all other isomers of 5-8 have been postulated from a combination of NMR data and results from the analogous Cp2W2Ir2(CO)10 system. Reactions of 1 with a range of alkynes afforded Cp2Mo2Ir2(崭?2-RC2R')(CO)8 (R = R' = Ph (9), H (14); R = H, R' = Ph (10), 4-C6H4NO2 (11), 4,4'-C6H4Ctriple bond; length as m-dashCC6H4NO2 (12), CH2Br (13)) in fair to good yields (34-80%). An X-ray structural study of 10 revealed that the alkynes have formally inserted into the Mo-Mo bond of 1, to afford clusters with a pseudooctahedral core geometry. Qualitative analysis of reaction rates for the syntheses of 9-14 revealed the trends acetylene> terminal alkyne> internal alkyne and 4-nitrophenylacetylene> phenylacetylene, assigned to a combination of electronic and steric effects.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier Science
dc.publisher.placeSwitzerland
dc.publisher.urihttp://www.sciencedirect.com/science/journal/0022328X
dc.relation.ispartofpagefrom519
dc.relation.ispartofpageto530
dc.relation.ispartofjournalJournal of Organometallic Chemistry
dc.relation.ispartofvolume545-546
dc.subject.fieldofresearchInorganic chemistry
dc.subject.fieldofresearchOrganic chemistry
dc.subject.fieldofresearchOther chemical sciences
dc.subject.fieldofresearchcode3402
dc.subject.fieldofresearchcode3405
dc.subject.fieldofresearchcode3499
dc.titleMixed-metal Cluster Chemistry VII: Some Phosphine and Alkyne Chemistry of Cp2Mo2Ir2(CO)10; X-ray Crystal Structures of Cp2Mo2Ir2(u-CO)3(CO)6(PMe3) and Cp2Mo2Ir2(u4-n2HC2Ph)(u-CO)4(CO)4
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 1997 Elsevier. Please refer to the journal's website for access to the definitive, published version.
gro.date.issued1997
gro.hasfulltextNo Full Text
gro.griffith.authorHealy, Peter C.


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record