Isolation of 1,4-Diarsinine-1,4-diide and 1,4-Diarsinine Derivatives

Abstract

1,4-Diarsinine-1,4-diide compound [(ADCPh)As]2 (5) (ADCPh={C(DippN)}2CPh, Dipp=2,6-iPr2C6H3) 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 8π-electron C4As2 ring, is antiaromatic and undergoes 2e-oxidation with AgOTf to form the 6π-electron aromatic system [(ADCPh)As]2(OTf)2 (6).