The first chiral early-late heterobimetallic complex — A titanium(IV)-palladium(II) complex based on salenophos

The synthesis of the chiral polyfunctional diphosphine salenophos 1 is described. The new ligand bearing hard and soft coordination sites chelates titanium(IV) as well as palladium(II) in a defined manner provided a certain order during the introduction of the two metals was kept. In this way the fi...

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Bibliographic Details
Published inTetrahedron Vol. 52; no. 46; pp. 14599 - 14606
Main Authors Kless, Achim, Lefeber, Claudia, Spannenberg, Anke, Kempe, Rhett, Baumann, Wolfgang, Holz, Jens, Börner, Armin
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier Ltd 11.11.1996
Elsevier
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
DESIGN
PHOSPHINE-LIGANDS
PYRIDINE
SUBSTITUENTS
SITES
HARD
CATALYSTS
MOLECULES
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Summary:The synthesis of the chiral polyfunctional diphosphine salenophos 1 is described. The new ligand bearing hard and soft coordination sites chelates titanium(IV) as well as palladium(II) in a defined manner provided a certain order during the introduction of the two metals was kept. In this way the first chiral early-late heterobimetallic complex could be synthesized. It was fully characterized by NMR spectroscopy and X-ray structural analysis. Remarkable features of the heterobimetallic complex are the trans coordination of the phosphine groups on palladium and the distance between Ti and Pd which is more than 4.13 Å. The new chiral ligand salenophos reacts successively with Ti(IV) and Pd(II) to give the first chiral early-late heterobimetallic complex which was characterized by NMR spectroscopy and X-ray structural analysis.
ISSN:0040-4020
1464-5416
DOI:10.1016/0040-4020(96)00864-2