Matches in SemOpenAlex for { <https://semopenalex.org/work/W4311524718> ?p ?o ?g. }
- W4311524718 abstract "Isolation and stabilization of main group diradical species have posed a synthetic challenge over the years due to their intrinsic high reactivity. Herein we report on a large-scale synthesis and isolation of a mono-coordinate bismuthinidene featuring a rigid and bulky ligand, which protects the Bi(I) center. The compound was characterized by its unique spectroscopic features (UV-vis and NMR), but more prominently, by its magnetic properties. Multiconfigurational quantum chemical calculations predict the ground state of the compound to be dominated by a spin-triplet. Further support for this electronic structure description was obtained through correlation of theory to experimental XRD, XAS, and UV-Vis data. However, all magnetic measurements (EPR, NMR and SQUID) point to a diamagnetic compound. This apparent discrepancy can be explained by an extremely large spin-orbit coupling (SOC) that leads to an unprecedented zero-field splitting of more than 8000 cm‒1, thus leaving a MS = 0 magnetic sublevel thermally isolated in the electronic ground state. The extremely large SOC effect is a result of the low-coordination number of the bismuth center in interplay with its heavy element nature." @default.
- W4311524718 created "2022-12-26" @default.
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- W4311524718 date "2022-12-15" @default.
- W4311524718 modified "2023-10-14" @default.
- W4311524718 title "A “non-magnetic” triplet bismuthinidene enabled by relativity" @default.
- W4311524718 doi "https://doi.org/10.26434/chemrxiv-2022-d3jl7" @default.
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