期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 116, 期 22, 页码 5375-5382出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp302300q
关键词
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资金
- EPSRC [EP/F01709X]
- European Research Council (ERC) under the European Union [258990]
- EPSRC [EP/F01709X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F01709X/1] Funding Source: researchfish
We have performed TD-DFT and CASSCF calculations to understand the spectroscopy and reactive photochemistry of the [Cr(tn)(3)](3+) complex. Our results show that, after population of a quartet ligand field excited state, the system relaxes by dissociation of a Cr-N bond to reach a quasi-trigonal bipyramid five-coordinate species that is a conical intersection connecting the excited and ground quartet manifolds. Nonadiabatic relaxation through these leads to square pyramidal structures that can coordinate water and account for the observed monoaquated photoproducts. Such features are also present on the potential energy surfaces of these photoproducts and account for the range of experimentally observed photostereoisomers of the photoaquation reactions.
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