Reactions of [Ru(H2O)6]2+ with water-soluble tertiary phosphines

József Kovács; Ferenc Joó; Attila C. Bényei; Gábor Laurenczy

doi:10.1039/B405878J

Reactions of [Ru(H₂O)₆]²⁺ with water-soluble tertiary phosphines†

József Kovács,*^a Ferenc Joó,^ab Attila C. Bényei^ab and Gábor Laurenczy^c

* Corresponding authors

^a Research Group of Homogeneous Catalysis, University of Debrecen, Debrecen 10, P.O.B. 7, Hungary
E-mail: kovacsj@delfin.unideb.hu
Fax: +36-52-512915
Tel: +36-52-512900

^b Institute of Physical Chemistry, University of Debrecen, Debrecen 10, P.O.B. 7, Hungary
Fax: +36-52-512915
Tel: +36-52-512900

^c Institut de Chimie Moléculaire et Biologique, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
Fax: +4121-6939865
Tel: +4121-6939858

Abstract

In aqueous solutions under mild conditions, [Ru(H₂O)₆]²⁺ was reacted with various water-soluble tertiary phosphines. As determined by multinuclear NMR spectroscopy, reactions with the sulfonated arylphosphines L = mtppms, ptppms and mtppts yielded only the mono- and bisphosphine complexes, [Ru(H₂O)₅L]²⁺, cis-[Ru(H₂O)₄L₂]²⁺, and trans-[Ru(H₂O)₄L₂]²⁺ even in a high ligand excess. With the small aliphatic phosphine L = 1,3,5-triaza-7-phosphatricyclo-[3.3.1.1^3,7]decane (pta) at [L]:[Ru] = 12:1, the tris- and tetrakisphosphino species, [Ru(H₂O)₃(pta)₃]²⁺, [Ru(H₂O)₂(pta)₄]²⁺, [Ru(H₂O)(OH)(pta)₄]⁺, and [Ru(OH)₂(pta)₄] were also detected, albeit in minor quantities. These results have significance for the in situ preparation of Ru(II)-tertiary phosphine catalysts. The structures of the complexes trans-[Ru(H₂O)₄(ptaMe)₂](tos)₄·2H₂O, trans-[Ru(H₂O)₄(ptaH)₂](tos)₄·2H₂O, and trans-mer-[RuI₂(H₂O)(ptaMe)₃]I₃·2H₂O, containing protonated or methylated pta ligands (ptaH and ptaMe, respectively) were determined by single crystal X-ray diffraction.

Article information

https://doi.org/10.1039/B405878J

Article type

Paper

Submitted

19 Apr 2004

Accepted

01 Jun 2004

First published

25 Jun 2004

Download Citation

Dalton Trans., 2004, 2336-2340

Permissions

Request permissions

Reactions of [Ru(H₂O)₆]²⁺ with water-soluble tertiary phosphines

J. Kovács, F. Joó, A. C. Bényei and G. Laurenczy, Dalton Trans., 2004, 2336 DOI: 10.1039/B405878J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Dalton Transactions