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Eine einfache Synthese von dimetallischen Zirconium/Aluminium‐Verbindungen mit planar‐tetrakoordiniertem Kohlenstoff
Author(s) -
Erker Gerhard,
Albrecht Markus,
Werner Stefan,
Nolte Matthias,
Krüger Carl
Publication year - 1992
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19921250823
Subject(s) - tetracoordinate , chemistry , alkyne , zirconium , diphenylacetylene , metallacycle , moiety , hydride , aluminium , cleavage (geology) , medicinal chemistry , stereochemistry , inorganic chemistry , planar , metal , organic chemistry , x ray crystallography , catalysis , computer graphics (images) , physics , computer science , diffraction , optics , geotechnical engineering , fracture (geology) , engineering
A Simple Synthesis of Dimetallic Zirconium/Aluminium Compounds Containing Planar‐Tetracoordinate Carbon (η 2 ‐Alkyne)(trimethylphosphane)zirconium complexes [alkyne = cyclohexyne ( 3a ) or diphenylacetylene ( 3b )] react with diisobutylaluminium hydride at room temperature by PMe 3 cleavage and addition of HAl(isobutyl) 2 to the in situ‐generated (η 2 ‐alkyne)ZrCp 2 intermediate to give the dimetallic Zr,Al compounds 4 . These thermodynamically stable complexes contain a planar‐tetracoordinate carbon center whose uncommon coordination geometry is stabilized by a combination of the s̀‐donor interaction with both electropositive metals and the π‐conjugation of the ZrC C moiety.
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