Silver cation tagged on 5,7,12,14-tetraphenyl-6,13-diazapentacene and its dihydro-form

Kinzelmann M, Oschwald J, Elsen H, Warmbrunn V, Hauschild M, Harder S, Kivala M, Drewello T (2023)

Publication Type: Journal article

Publication year: 2023


DOI: 10.1039/d2cp05929k


The attachment of silver(i) cations to 5,7,12,14-tetraphenyl-6,13-diazapentacene and its reduced dihydro-form has been studied by electrospray ionization mass spectrometry (ESI-MS). The structure elucidation of the Ag+ complexes has been accomplished in gas-phase collision experiments in conjunction with density functional theory (DFT) calculations. The oxidized form provides a favourable cavity for the Ag+ ion, leading to the [1 : 1] complex with the highest resilience towards dissociation and severely hindering the attainment of a second molecular ligand. When the nitrogen is hydrogenated in the reduced dihydro-form, the cavity is partly blocked. This leads to a less strongly bound [1 : 1] complex ion but facilitates the attachment of a second molecular ligand to the Ag+. The resulting complex is the most stable among the [2 : 1] complexes. DFT calculations provide valuable insight into the geometries of the complex ions. Adding silver(i) to the reduced dihydro-form for cationization also induces its oxidation in solution. The oxidative dehydrogenation reaction, for which a mechanism is proposed, proceeds by first order kinetics and is markedly accelerated by day light.

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Kinzelmann, M., Oschwald, J., Elsen, H., Warmbrunn, V., Hauschild, M., Harder, S.,... Drewello, T. (2023). Silver cation tagged on 5,7,12,14-tetraphenyl-6,13-diazapentacene and its dihydro-form. Physical Chemistry Chemical Physics.


Kinzelmann, Marina, et al. "Silver cation tagged on 5,7,12,14-tetraphenyl-6,13-diazapentacene and its dihydro-form." Physical Chemistry Chemical Physics (2023).

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