Promoting Alkane Binding: Crystallization of a Cationic Manganese(I)‐Pentane σ ‐Complex from Solution
Year: 2025
Type: article
Abstract: Transition metal–alkane σ ‐complexes are key intermediates in C–H activation and, until now, analysis of these species has been restricted to either the solution OR the solid state. Here we present a synthetic methodology that converts Mn 2 (CO) 10 in a noncoordinating solvent environment to [Mn(CO) 5 ] + at room temperature, and this species binds n ‐pentane as the strongest interacting ligand available. Three isomers of the n ‐pentane σ ‐complexes were studied in detail by solution NMR‐spectroscopy at low temperature. Two isomers of [Mn(CO) 5 ( n ‐pentane)] + crystallize from solution at room temperature and their structures were determined by single crystal X‐ray crystallography. The oxidation of metal complex dimers in solution to generate reactive metal cations, which bind alkanes as the strongest available ligand, is a new and probably general approach to generate metal‐alkane σ ‐complexes.
Authors: Malte Sellin, James D. Watson, Julia Fischer, Graham E. Ball, Leslie D. Field, Ingo Krossing
Institutions: University of Freiburg, UNSW Sydney
Language: English
Subfield: Organic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,510
Awards: G1110023947, G1366155583, G1578741624, G1962882911, G328597760, Von neuen ÜbergangsmetallCarbonyl und NitrosylKationen der 5. bis 10. Gruppe zu 'nackten' M+ Synthonen und deren Einsatz für Substitutionsreaktionen, die Aktivierung kleiner Moleküle und die Darstellung von potentiellen Katalysatoren, Innocent Deelectronation Chemistry - From the unified redox scale valid in all solvents to innocent deelectronation chemistry in innocent solvents, G3937629125, G402306430, Alkane transformations through binding to metals, G7138884940, OxWCA Von unschuldigen und Ligandbildenden OxidansSalzen zu Synthese und Anwendung reaktiver Erdalkali oder früher ÜbergangsMetallArenKationen [Mx(aren)y]n+
OpenAlex ID: W4409866947