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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

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1865-7117
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Volume 65, Issue 6

Issues

Metal Complexes of Biologically Important Ligands, CLXXV [1]. Pentamethylcyclopentadienyl Halfsandwich Complexes of Rhodium(III) and Iridium(III) with Schiff Bases from 2-(Diphenylphosphino)- benzaldehyde and α-Amino Acid Esters

Bernhard Schreiner
  • Department Chemie und Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstraße 5 – 13, 81377 München, Germany
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/ Barbara Wagner-Schuh
  • Department Chemie und Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstraße 5 – 13, 81377 München, Germany
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/ Wolfgang Beck
  • Corresponding author
  • Department Chemie und Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstraße 5 – 13, 81377 München, Germany
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Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/znb-2010-0603

The reactions of the chlorido-bridged complexes [Cp*M(Cl)(μ-Cl)]2 (M = Rh, Ir) with Schiff bases (P-N-O) from 2-(diphenylphosphino)benzaldehyde and α-amino acid esters afford the complexes Cp*M(Cl)2(P-N-O) in which the ligands function as monodentate P donors (M = Ir) or as bidentate P-N donors (M = Rh). These complexes can be converted into cationic complexes [Cp*M(Cl)(P-NO)]+ with bidentate P-N ligands by treatment with NH4PF6. The cationic complexes [Cp*M(Cl)(PN- O)]+Cl have been detected also in solutions of Cp*M(Cl)2(P-N-O). The P-N-coordinated complex [Cp*Rh(Cl)(Ph2P-C6H4-C(H)=N-C(H)(CH2Ph)CO2Me)]+PF6 was characterized by X-ray diffraction. From Cp*M(Cl)2(P-N-O) and AgBF4 or AgPF6 (molar ratio 1 : 2) the dicationic complexes [Cp*M(P-N-O)]2+ are formed in which the ester group is also coordinated to the metal atom. The Schiff base from 2-(diphenylphosphino)benzaldehyde and allylglycine ester acts as a tridentate ligand, however with coordination of the C=C allyl group instead of the ester function.

Graphical Abstract

Metal Complexes of Biologically Important Ligands, CLXXV [1]. Pentamethylcyclopentadienyl Halfsandwich Complexes of Rhodium(III) and Iridium(III) with Schiff Bases from 2-(Diphenylphosphino)- benzaldehyde and α-Amino Acid Esters

Metal Complexes of Biologically Important Ligands, CLXXV [1]. Pentamethylcyclopentadienyl Halfsandwich Complexes of Rhodium(III) and Iridium(III) with Schiff Bases from 2-(Diphenylphosphino)- benzaldehyde and α-Amino Acid Esters

Keywords: Pentamethylcyclopentadienyl; Rhodium; Iridium; Schiff Bases; 2-(Diphenylphosphino)benzaldehyde; α-Amino Acid Esters

About the article

Received: 2010-02-02

Published Online: 2014-06-02

Published in Print: 2010-06-01


Citation Information: Zeitschrift für Naturforschung B, Volume 65, Issue 6, Pages 679–686, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-2010-0603.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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