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Updated: Aug 23, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
2,2'-Bi(9,9-dihexylfluorene)
1Laboratoire de Spectrométrie Physique, Unité mixte de recherche (C5588), Université Joseph Fourier-Grenoble 1-CNRS, BP 87, 38402 Saint Martin d'Heres CEDEX, France.
Abstract:
The central part of the title molecule, C(50)H(66), is planar, all the rings being in the same plane; the lateral chains are also planar (excluding H atoms), almost perpendicular to the ring plane and grafted on the same side of the molecule. The molecule has nearly a mirror plane, perpendicular to the central C-C bond, instead of the centre of symmetry expected. The orientation of the plane of the rings is approximately 45 degrees from the unit-cell b axis, so that neighbouring molecules are essentially perpendicular.
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