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Synthesis and decomposition of neutral palladium(IV) complexes containing fac-PdMe2R groups, including reductive elimination by etal-propenylpalladium(IV) complexes to form eta3-propenylpalladium(II) species

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Byers, PK and Canty, AJ and Traill, PR and Watson, AA (1990) Synthesis and decomposition of neutral palladium(IV) complexes containing fac-PdMe2R groups, including reductive elimination by etal-propenylpalladium(IV) complexes to form eta3-propenylpalladium(II) species. Journal of Organometallic Chemistry, 390 (3). pp. 399-407. ISSN 0022-328X

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Abstract

Oxidative addition of ethyl iodide to PdMe2(2,2’-bipyridyl) in (CD3)2CO gives the unstable “PdIMe2Et(bpy)“, which undergoes reductive elimination to form PdIR(bpy) (R = Me, Et), ethane, and propane. Ethene and palladium metal are also formed, and are attributed to decomposition of PdIEt(bpy) via beta-elimination. Similar results are obtained with n-propyl iodide, although a palladium(IV) intermediate was not detected, but CH2=CHCH2X (X = Br, I) and PhCH=CHCH2Br give isolable complexes fac-PdXMe2(CH2CH=CHR)(L2) (R = H, Ph; L2 = bpy, phen). The propenyl complexes decompose at ambient temperature to form ethane, a trace of PdXMe(L2), and mixtures of [Pd(eta3-C3H5)(L2)]X and [Pd(eta3-C3H5)(L2)][Pd(eta3-C3H5)X2]; for fac-PdBrMe2(CH2CH=CH2)(bpy) the major palladium(II) product is [Pd(eta3-C3H5)(bpy)]Br.

Item Type: Article
Journal or Publication Title: Journal of Organometallic Chemistry
Page Range: pp. 399-407
ISSN: 0022-328X
Identification Number - DOI: 10.1016/0022-328X(90)85108-B
Additional Information:

The definitive version is available at http://www.sciencedirect.com

Date Deposited: 01 Feb 2008 05:03
Last Modified: 18 Nov 2014 03:27
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