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Isolation and Properties of the Long Elusive Deep Blue Soluble [K₃ {(N^t Bu)₃ S}₂ ]^. Cage Radical.

ABSTRACT: The reaction of potassium metal with sulfurtriimide S(N^t Bu)₃ (II) gives the long elusive deep blue cage radical [K₃ {(N^t Bu)₃ S}₂ ]^. (1_K) that crystallizes at -35 °C from toluene solution. The subsequent physical characterization via X-ray structure analysis, UV/Vis-, and EPR spectroscopy from solution reveals the existence of one unpaired electron delocalized within the whole cage, i.e. coupling with the six nitrogen atoms, as well as the three potassium atoms caped by the two SN₃ ligands. The present X-ray structure analysis further supports previous assumptions made on the parent compound 1_Li obtained from [Li₄ {(N^t Bu)₃ S}₂ ] (I) and finally elucidates the structural arrangement of the SN₃ caps and alkali metals in such radical cage species.

SUBMITTER: Legendre CM

PROVIDER: S-EPMC9306764 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Isolation and Properties of the Long Elusive Deep Blue Soluble [K3 {(Nt Bu)3 S}2 ]. Cage Radical.

Legendre Christina M CM Stückl A Claudia AC Sindlinger Christian P CP Herbst-Irmer Regine R Stalke Dietmar D

Angewandte Chemie (International ed. in English) 20220114 10

The reaction of potassium metal with sulfurtriimide S(Nt Bu)3 (II) gives the long elusive deep blue cage radical [K3 {(Nt Bu)3 S}2 ]. (1_K) that crystallizes at -35 °C from toluene solution. The subsequent physical characterization via X-ray structure analysis, UV/Vis-, and EPR spectroscopy from solution reveals the existence of one unpaired electron delocalized within the whole cage, i.e. coupling with the six nitrogen ...[more]

PMID: 34905651

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