Synthesis and characterisation of three dinuclear β-dialdiminatobismuth(III) dihalides

Abstract

Treatment of anhydrous BiCl 3, BiBr 3 or BiI 3 with an equivalent portion of the β-dialdiminatosodium compound Na[{N(Ar)C(H)} 2CPh] [≡ Na( L); Ar = C 6H 3Pr i 2-2,6] in tetrahydrofuran and crystallisation from diethyl ether afforded the crystalline red [BiCl 2( L)(μ-Cl)Bi(Cl) L(thf)]·OEt 2 ( 1), the isomorphous yellow/orange bromide 2 and the yellow/orange [{BiI( L)(μ-I)} 2]·0.5OEt 2 ( 3). The X-ray structures of 1– 3 are reported. The known pyrazolium salt ▪ was obtained by iodination of 3.