Spin flipping in triplet carbenes occurs via intersystem crossing mediated by spin-orbit coupling
Spin flipping, or intersystem crossing, in triplet carbene and related organometallic systems is fundamentally mediated by spin-orbit coupling as established by numerous photophysical studies.
The claim states that spin flipping in triplet carbenes occurs via intersystem crossing mediated by spin-orbit coupling. General photochemical literature and specific computational studies on carbene complexes confirm that intersystem crossing between different spin multiplicities is driven by spin-orbit coupling (SOC).
Christel M. Marian. Spin–orbit coupling and intersystem crossing in molecules. 2011. https://doi.org/10.1002/wcms.83
Establishes that intersystem crossing (ISC), the transition between states of different multiplicity, relies fundamentally on spin-orbit coupling (SOC).
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Jelena Föller, C. Ganter, Andreas Steffen, C. Marian. Computer-Aided Design of Luminescent Linear N-Heterocyclic Carbene Copper(I) Pyridine Complexes.. 2019. https://doi.org/10.1021/acs.inorgchem.9b00334
Demonstrates that intersystem crossing and reverse intersystem crossing in carbene complexes are mediated by spin-orbit interactions.
Stefano Scoditti, Francesco Chiodo, Gloria Mazzone, Sébastien Richeter, E. Sicilia. Porphyrins and Metalloporphyrins Combined with N-Heterocyclic Carbene (NHC) Gold(I) Complexes for Photodynamic Therapy Application: What Is the Weight of the Heavy Atom Effect?. 2022. https://doi.org/10.3390/molecules27134046
Shows that spin-orbit coupling constants are key determinants in promoting intersystem crossing in carbene-containing metal complexes.
Gao J, Zhang P, Zheng F, Miller RJD, Duan HG, Jha A. Vibronic and Spin-Orbit Interplay Governs Ultrafast Spin Crossover in an Iron(II) Carbene Complex.. 2026. https://doi.org/10.1002/cphc.202500768
Highlights the interplay of spin-orbit coupling and vibronic effects in mediating ultrafast spin-state transitions in iron carbene complexes.
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