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Updated: Feb 11, 2026

Sulfate Separation by Selective Crystallization with a Bis-iminoguanidinium Ligand
Published on: September 8, 2016
Fluorinated Bis(enyl) Ligands by Metal-Induced Dimerization of Fluorinated Allenes
Dieter Lentz1, Stefan Willemsen1
1Fachbereich Biologie, Chemie, Pharmazie Institut für Chemie Anorganische und Analytische Chemie Freie Universität Berlin Fabeckstrasse 34-36, 14195 Berlin (Germany) Fax: (+49) 30-8385-2424.
Abstract:
Cobalt and manganese complexes provide access to novel fluoroallyl ligands: Fluorinated bis(enyl) ligands can be easily synthesized by metal-induced dimerization of 1,1-difluoroallene and tetrafluoroallene. By using octacarbonyldicobalt the coupling reaction occurs at the central carbon atom of the allene leading to the formation of fluorinated μ-(η3 :η3 -2,3-dimethylenebuta-1,4-diyl) ligands such as those in complex 1. Additional products arise from fluoride abstraction and CO insertion reactions. Decacarbonyldimanganese reacts with 1,1-difluoroallene under C-C coupling of the methylene group to give decacarbonyl-μ-(η1 :η1 -1,1,6,6-tetrafluoro-1,5-hexadiene-2,5-diyl)dimanganese.
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