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Synthesis and Structure of the Pentaisopropylcyclopentadienyl Radical
Author(s) -
Sitzmann Helmut,
Boese Roland
Publication year - 1991
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199109711
Subject(s) - cyclopentadienyl complex , ferrocene , isopropyl , yield (engineering) , derivative (finance) , chemistry , crystal structure , crystallography , metal , photochemistry , materials science , medicinal chemistry , organic chemistry , catalysis , electrode , economics , financial economics , electrochemistry , metallurgy
The reaction of FeCl 2 with C 5 i Pr 5 Na does not yield a ferrocene derivative but instead the surprisingly stable radical C 5 i Pr 5 • . Apparently, the bulky isopropyl substituents interfere with the formation of a sandwich structure. In the crystal, the cyclopentadienyl units are stacked along the crystallographic x axis to give a “metal‐free polydecker” (shown on the right).