Synthesis, Electronic Properties and Reactivity of [B₁₂ X₁₁ (NO₂ )]^2- (X=F-I) Dianions.

ABSTRACT: Nitro-functionalized undecahalogenated closo-dodecaborates [B₁₂ X₁₁ (NO₂ )]^2- were synthesized in high purities and characterized by NMR, IR, and Raman spectroscopy, single crystal X-diffraction, mass spectrometry, and gas-phase ion vibrational spectroscopy. The NO₂ substituent leads to an enhanced electronic and electrochemical stability compared to the parent perhalogenated [B₁₂ X₁₂ ]^2- (X=F-I) dianions evidenced by photoelectron spectroscopy, cyclic voltammetry, and quantum-chemical calculations. The stabilizing effect decreases from X=F to X=I. Thermogravimetric measurements of the salts indicate the loss of the nitric oxide radical (NO^. ). The homolytic NO^. elimination from th

SUBMITTER: Asmis KR 

PROVIDER: S-EPMC7756457 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature