Isolation Of 1,4-Diarsinine-1,4-Diide And 1,4-Diarsinine Derivatives

1,4-Diarsinine-1,4-diide compound [(ADC(Ph))As](2) (5) (ADC(Ph)={C(DippN)}(2)CPh, Dipp=2,6-iPr(2)C(6)H(3)) with a planar C4As2 ring fused between two 1,3-imidazole scaffolds has been isolated as a red crystalline solid. Compound 5, formally comprising an 8 pi-electron C4As2 ring, is antiaromatic and undergoes 2e-oxidation with AgOTf to form the 6 pi-electron aromatic system [(ADC(Ph))As](2)(OTf)(2) (6).