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Synthesis and Properties of the First [4.4]Ferrocenophane‐1,3,15,17‐tetrayne
Author(s) -
Fabian Kai H. H.,
Lindner HansJörg,
Nimmerfroh Norbert,
Hafner Klaus
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010917)40:18<3402::aid-anie3402>3.0.co;2-9
Subject(s) - allene , delocalized electron , chemistry , crystallography , oxidative coupling of methane , electron delocalization , stereochemistry , organic chemistry , catalysis
Building butadiyne bridges : The kinetically stabilized 1,1′‐diethynylferrocene, readily prepared from the pentafulvenoid allene 1 , can be transformed into the [4.4]ferrocenophane 2 by oxidative coupling. This compound exhibits a remarkably symmetrical structure in which the electrons are delocalized through the butadiyne bridges; in the crystalline state 2 exists in a helical‐chiral conformation.