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Issue 29, 2010
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Linear uranium metallocenes with polydentate aromatic nitrogen ligands

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Abstract

Treatment of [Cp*2U(NCMe)5]X2 [Cp* = C5Me5, X = BPh4 (1) or I (1′)] or Cp*2UI2 in acetonitrile with the polydentate aromatic nitrogen bases phen, terpy and R4btbp led to the formation of the linear uranium metallocenes [Cp*2U(NCMe)3(phen)]X2 [X = BPh4 (2), I (2′)], [Cp*2U(NCMe)2(terpy)][BPh4]2 (4), [Cp*2U(NCMe)(Me4btbp)][BPh4]2 (5) and [Cp*2U(NCMe)(CyMe4btbp)][X]2, [X = BPh4 (6), I (6′)], [phen = 1,10-phenanthroline, terpy = 2,2′:6,2′′-terpyridine, Me4btbp = 6,6′-bis-(3,3,6,6-tetramethyl-1,2,4-triazin-3-yl)-2,2′-bipyridine, CyMe4btbp = 6,6′-bis-(3,3,6,6-tetramethyl-cyclohexane-1,2,4-triazin-3-yl)-2,2′-bipyridine]. The bent metallocene [Cp*2U(phen)2][BPh4]2 (3) was isolated from the reaction of 1 and two molar equivalents of phen in THF. The X-ray crystal structures of 2·2MeCN, 3·2THF, 4 and 6′·2MeCN were determined.

Graphical abstract: Linear uranium metallocenes with polydentate aromatic nitrogen ligands

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Publication details

The article was received on 02 Feb 2010, accepted on 07 May 2010 and first published on 02 Jun 2010


Article type: Paper
DOI: 10.1039/C002279A
Citation: Dalton Trans., 2010,39, 6801-6807
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    Linear uranium metallocenes with polydentate aromatic nitrogen ligands

    J. Berthet, J. Maynadié, P. Thuéry and M. Ephritikhine, Dalton Trans., 2010, 39, 6801
    DOI: 10.1039/C002279A

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