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Issue 45, 2010
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Structure elucidation of the unprecedented asymmetric bis-chelate complex [Pd(1,3-bis(di(o-methoxy-m-methylphenyl)phosphino)propane)2]2+ in the solid state and in solution

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Abstract

Complexes of the type [Pd(ligand)2](anion)2 were prepared with a series of bidentate di(o-methoxyphenyl)phosphine ligands with increasing steric bulk on the meta position of the phenyl groups: m-H (L1); m-MeO (L2); and m-Me (L3). The solid-state structure of [Pd(L2)2](OTs)2 revealed that the two ligands are symmetrically coordinated to Pd2+. In the solid state structure of [Pd(L3)2](OTs)2 however, the two ligands are unsymmetrically coordinated to Pd2+, yielding an unprecedented conformation of this bis-chelate P4Pd2+ complex. 1H-1H-COSY and NOESY analysis and a 31P-NMR simulation showed that the asymmetric structure of [Pd(L3)2](OTs)2 is retained in solution.

Graphical abstract: Structure elucidation of the unprecedented asymmetric bis-chelate complex [Pd(1,3-bis(di(o-methoxy-m-methylphenyl)phosphino)propane)2]2+ in the solid state and in solution

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Publication details

The article was received on 22 Jun 2010, accepted on 31 Aug 2010 and first published on 14 Oct 2010


Article type: Paper
DOI: 10.1039/C0DT00699H
Dalton Trans., 2010,39, 11027-11034

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    Structure elucidation of the unprecedented asymmetric bis-chelate complex [Pd(1,3-bis(di(o-methoxy-m-methylphenyl)phosphino)propane)2]2+ in the solid state and in solution

    T. J. Mooibroek, M. Lutz, A. L. Spek and E. Bouwman, Dalton Trans., 2010, 39, 11027
    DOI: 10.1039/C0DT00699H

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