Unknown

Dataset Information

0

Reactivity of cyano- and isothiocyanatoborylenes: metal coordination, one-electron oxidation and boron-centred Bronsted basicity.


ABSTRACT: Doubly base-stabilised cyano- and isothiocyanatoborylenes of the form LL'BY (L = CAAC = cyclic alkyl(amino)carbene; L' = NHC = N-heterocyclic carbene; Y = CN, NCS) coordinate to group 6 carbonyl complexes via the terminal donor of the pseudohalide substituent and undergo facile and fully reversible one-electron oxidation to the corresponding boryl radical cations [LL'BY]˙+. Furthermore, calculations show that the borylenes have very similar proton affinities, both to each other and to NHC superbases. However, while the protonation of LL'B(CN) with PhSH yielding [LL'BH(CN)+][PhS-] is fully reversible, that of LL'B(NCS) is rendered irreversible by a subsequent B-to-CCAAC hydrogen shift and nucleophilic attack of PhS- at boron.

SUBMITTER: Hagspiel S 

PROVIDER: S-EPMC8188585 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC2838452 | biostudies-literature
| S-EPMC3503180 | biostudies-literature
| S-EPMC4633964 | biostudies-literature
| S-EPMC8362087 | biostudies-literature
| S-EPMC3051429 | biostudies-literature
| S-EPMC6979323 | biostudies-literature
| S-EPMC9189657 | biostudies-literature
| S-EPMC5309778 | biostudies-literature
| S-EPMC4683434 | biostudies-literature
| S-EPMC6592929 | biostudies-literature