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Palladium(II)–allyl complexes containing chiral N-donor ferrocenyl ligands by Ana E. Platero-Prats; Sonia Pérez; Concepción López; Xavier Solans; Mercè Font-Bardía; Piet W.N.M. van Leeuwen; Gino P.F. van Strijdonck; Zoraida Freixa is a Chemistry article available to read on EtoBox.

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A study of the reactivity of enantiopure ferrocenylimine (S C )-[FcCH@N-CH(Me)(Ph)] {Fc = (g 5 -C 5 H 5 )Fe{(g 5 -C 5 H 4 )-} (1a) with palladium(II)-allyl complexes [Pd(g Treatment of 1a with 2 or 3 {in a molar ratio Pd(II):1a = 1} in CH 2 Cl 2 at 298 K produced [Pd(g 3 -3R 2 -C 3 H 4 ){FcCH@N-CH(Me)(Ph)}Cl] {R 2 = H (5a) or Ph (6a)}. When the reaction was carried out under identical experimental conditions using complex 4 as starting material no evidence for the formation of [Pd(g 3 -1,3-Ph 2 -C 3 H 3 ){FcCH@N-CH(Me)(Ph)}Cl] (7a) was found. Additional studies on the reactivity of (S C )-[FcCH@N-CH(R 3 )(CH 2 OH)] {R 3 = Me (1b) or CHMe 2 (1c)} with complex 4 showed the importance of the bulk of the substituents on the palladium(II) allyl-complex (2-4) or on the ferrocenylimines (1) in this type of reaction. The crystal structure of 5a showed that: (a) the ferrocenylimine adopts an anti-(E) conformation and behaves as an N-donor ligand, (b) the chloride is in a cis-arrangement to the nitrogen and (c) the allyl group binds to the palladium(II) in a g 3 -fashion. Solution NMR studies of 5a and 6a and [Pd(g 3 -1,3-Ph 2 -C 3 H 3 ){FcCH@N-CH(Me)(CH 2 OH)}Cl] (7b) revealed the coexisten

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Author

Ana E. Platero-Prats; Sonia Pérez; Concepción López; Xavier Solans; Mercè Font-Bardía; Piet W.N.M. van Leeuwen; Gino P.F. van Strijdonck; Zoraida Freixa

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-328X)

Published

2007

Language

EN

Field

Chemistry (Physical Sciences)