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A Novel Route to the 5-[2-(Diphenylphosphanyl)ethyl]-1,2,3,4-tetramethylcyclopentadienyl Ligand – Synthesis and Crystal Structure of [η5:η1-C5(CH3)4CH2CH2PPh2]ZrCl3·THF

✍ Scribed by Dmitrii P. Krut'ko; Maxim V. Borzov; Eduard N. Veksler; Roman S. Kirsanov; Andrei V. Churakov

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 331 KB
Volume: 1999
Category: Article
ISSN: 1434-1948
DOI: 10.1002/(sici)1099-0682(199911)1999:11<1973::aid-ejic1973>3.0.co;2-u

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✦ Synopsis

The five-step synthesis of the first transition metal complex CH 2 PPh 2 (9), silylated cyclopentadiene (CH 3 ) 3 SiC 5 (CH 3 ) 4 -CH 2 CH 2 PPh 2 (10) and cyclopentadiene HC 5 (CH 3 ) 4 CH 2 -with the C 5 (CH 3 ) 4 CH 2 CH 2 PPh 2 ligand [η 5 :η 1 -C 5 -(CH 3 ) 4 CH 2 CH 2 PPh 2 ]ZrCl 3 •THF (11), starting from the known CH 2 PPh 2 (12) were isolated and characterised as pure substances. The crystal structure of the zirconium complex compound [2-(dimethylamino)ethyl]tetramethylcyclopentadiene (4) via 4,5,6,7-tetramethylspiro[2,4]hepta-4,6-diene (7), 11 was established by X-ray diffraction analysis. is reported. Lithium cyclopentadienide LiC 5 (CH 3 ) 4 CH 2 -

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