Synthesis of phosphine substituted β-diketiminate based isomeric Ge(II) complexes

N. Dastagiri Reddy; Anukul Jana; Herbert W. Roesky; Prinson P. Samuel; Carola Schulzke

doi:10.1039/B915403E

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Dalton Transactions

Issue 1, 2010

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Synthesis of phosphine substituted β-diketiminate based isomeric Ge(II) complexes

N. Dastagiri Reddy , Anukul Jana , Herbert W. Roesky , Prinson P. Samuel and Carola Schulzke

Dalton Trans., 2010, 39, 234-238

DOI: 10.1039/B915403E
Received 29 Jul 2009, Accepted 02 Oct 2009
First published on the web 09 Nov 2009

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Abstract
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Treatment of phosphine substituted β-diketiminate lithium, Ph₂PC[C(Me)N(Dipp)]₂LiOEt₂ (1) (Dipp = 2,6-ⁱPr₂C₆H₃) with dioxane·GeCl₂resulted in a five-membered N,P chelate complex, Ph₂PC[C(Me)N(Dipp)]₂GeCl (2). An isomer of 2 CH{[C(CH₂PPh₂)N(Dipp)][C(Me)N(Dipp)]}GeCl (5) was obtained from the germanium complex L′Ge (L′ = CH[C( [double bond, length as m-dash] CH₂)N(Dipp)][C(Me)N(Dipp)])Ge (4) and Ph₂PCl. In 5 the PPh₂ group remains uncoordinated. Both complexes were characterized by X-ray structural analysis and in the case of 5 both enantiomers crystallize in the same unit cell.

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ORTEP diagram of 2 showing proximity of methyne protons to phenylgroups
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N. Dastagiri Reddy
Anukul Jana
Herbert W. Roesky
Prinson P. Samuel
Carola Schulzke

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Dalton Transactions

Synthesis of phosphine substituted β-diketiminate based isomeric Ge(II) complexes

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