Affiliation:
1. Institute for Chemistry and CINSaT University of Kassel Heinrich‐Plett‐Straße 40 34132 Kassel Germany
2. Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem Rkp 3. Budapest 1111 Hungary
Abstract
AbstractCoordination of a stereochemically defined P3‐chain to a series of transition metal carbonyls [M(CO)x]z− (M = Mn (x = 5, z = 1), Fe (x = 4, z = 2) or Co (x = 4, z = 1)) is explored using a [3]ferrocenophane scaffold. A gradual transition from η1‐, η2‐ to η3‐coordination is observed where in the η2‐mode the terminal positions of the phosphorus chain are bridged. With an excess of cobalt carbonyl successive P–P bond activation and gradual separation of the central phosphorus atoms from the phosphorus chain has been observed. This process is reversible and with suitable reagents such as methyl lithium, the P3‐unit is regenerated in stereospecific manner. The bonding situation and steps of the gradual P–P bond activation are investigated by DFT calculations as well as experimental methods (e.g., NMR spectroscopy, X‐ray crystallography).
Subject
General Physics and Astronomy,General Engineering,Biochemistry, Genetics and Molecular Biology (miscellaneous),General Materials Science,General Chemical Engineering,Medicine (miscellaneous)