%0 Journal Article
%T Syntheses and Crystal Structures of Ferrocenoindenes
%A Klaus Wurst
%A Gerhard Laus
%A Michael R. Buchmeiser
%A Herwig Schottenberger
%J Crystals
%D 2013
%I MDPI AG
%R 10.3390/cryst3010141
%X Ferrocenoindenes display planar chirality and thus represent valuable ligands for asymmetric catalysis. Here, we report on the synthesis of novel 3-(1,1-dibromomethylene)ferroceno[1,2-a]indene, ( Z)-3-(1-bromomethylene)-6-iodoferroceno[1,2-a]indene, and benzo[5,6-f]ferroceno[2,3,a]inden-1-one. Any application-oriented design of chiral catalysts requires fundamental knowledge about the ligands involved, not only in terms of atom-connectivity, but also in terms of their three-dimensional structure and steric demand. Therefore, the crystal structures of 2-ferrocenylbenzoic acid, ferroceno[1,2-a]indene, and ( Z)-3-(1-bromomethylene)-6-iodoferroceno[1,2-a]indene have been determined. The bond-lengths that can be retrieved therefrom also allow for an estimation of the reactivity of the aryl-iodo, bromo-methylidene and dibromomethylidene moieties.
%K ferrocene
%K ferrocenoindene
%K planar chiral
%K racemic crystal
%U http://www.mdpi.com/2073-4352/3/1/141