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The First A-Frame-Containing Organometallic Polymer: Taking Advantage of the Site Selectivity in PdPt-Mixed Metal Bimetallics

  • Sébastien Clément
  • Shawkat Mohammed Aly
  • Karl Gagnon
  • Alaa S. Abd-El-Aziz
  • Michael Knorr
  • Pierre D. Harvey
Article

Abstract

ClPd(μ-dppm)2PtCl (1) reacts with (CNC6H4–2-OCH2–)2 to form a sparingly soluble and thermally stable orange polymeric material 4. 1 reacts with 1 or 2 equivalents of CNC6H4–2-OCH3 to form the soluble A-frame d8–d8 model complexes 2 [ClPd(μ-dppm)2(μ-CNR)PtCl], and 3 [ClPd(μ-dppm)2(μ-CNR)Pt(CNR)](Cl) (R = C6H4–2-OCH3), respectively. IR (ν(NC) bridging versus terminal) and NMR data reveal an A-frame structure where the terminal CNR ligands are bonded to Pt. 4 which is amorphous (XRD) appears stable up to 290 °C (TGA), but exhibits an exothermic process between 215 and 255 °C upon the first scan in DSC, but disappears upon the second. Two compounds, model 2e = 674 nm; τe = 0.38 ± 0.01 μs; Φe = 0.0079 (±10%)) and polymer 4 e = 660 nm; τe = 0.18 ± 0.01 μs; Φe = 0.0056 (±10%)) are luminescent at 77 K in the solid state and in fluid solution (PrCN).

Graphical abstract

The First A-Frame-Containing Organometallic Polymer: Taking Advantage of the Site Selectivity in PdPt-Mixed Metal Bimetallics

Sébastien Clément, Shawkat Mohammed Aly, Karl Gagnon, Alaa S. Abd-El-Aziz, Michael Knorr, Pierre D. Harvey

ClPd(μ-dppm)2Cl2 reacts with (CN–C6H4–O–CH2–)2 to form the first A-frame-containing organometallic polymer, which is unambiguously characterized with the use of model compounds. This polymer does not experience any weight loss up to 290 °C based on TGA measurements, but DSC traces reveal an irreversible process at 215 °C (DSC). The novel material is also luminescent at 77 K. For example, λe = 660 nm; τe = 0.18 ± 0.01 μs; Φe = 0.0056 (±10%) in PrCN.

Keywords

A-frame Isocyanide Palladium Platinum Differential scanning calorimetry (DSC) Heterobimetallic Organometallic polymers Oligomers Thermogravimetric analysis (TGA) 

Notes

Acknowledgements

PDH thanks the Natural Science and Engineering Research Council of Canada (NSERC). MK thanks the French Ministère de la Recherche et Technologie for financial support and a PhD grant for SC.

Supplementary material

10904_2007_9176_MOESM1_ESM.doc (135 kb)
(DOC 135 kb)

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Sébastien Clément
    • 1
  • Shawkat Mohammed Aly
    • 2
  • Karl Gagnon
    • 2
  • Alaa S. Abd-El-Aziz
    • 3
  • Michael Knorr
    • 1
  • Pierre D. Harvey
    • 2
  1. 1.Institut UTINAM UMR CNRS 6213Université de Franche-Comté, Faculté des Sciences et des TechniquesBesanconFrance
  2. 2.Département de ChimieUniversité de SherbrookeSherbrookeCanada
  3. 3.Department of ChemistryUniversity of British ColumbiaKelownaCanada

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