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The First Monofluorenyl Zirconium Trichloride
Author(s) -
Van Der Zeijden Adolphus A. H.,
Mattheis Chris,
Fröhlich Roland
Publication year - 1997
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.19971300910
Subject(s) - chemistry , cyclopropane , zirconium , ether , medicinal chemistry , intramolecular force , fluorene , ligand (biochemistry) , denticity , dimer , bond cleavage , derivative (finance) , stereochemistry , crystal structure , polymer chemistry , crystallography , inorganic chemistry , organic chemistry , ring (chemistry) , economics , polymer , biochemistry , receptor , financial economics , catalysis
The monofluorenyl zirconium complex [(. (5 ):. 1 ‐C 13 H 8 CH 2 CH 2 OMe)ZrCl 2 (μ‐Cl)] 2 , ( 2 ), has been obtained bby reaction of the respective fluorenyl lithium derivative with ZrCl 4 in diethyl ether. A single‐crystal X‐ray structural analysis shows that 2 is a chloride‐bridged dimer, in which the fluorenyl ligand is bonded in a transitional tri‐ to pentahapto fashion. The relatively weak fluorenyl–zirconium bond is stabilized by intramolecular coordination of the ether sidechain attached to the fluorenyl backbone. Despite this, the bidentate ligand is easily detached upon dissolution of 2 in THF. Simultaneous ether cleavage produces spiro[cyclopropane‐1,9′‐fluorene].