2,6-Diisopropylphenyl substituted Bismuth Halide and Interpnictogen Compounds

Herein, we report about the preparation of several new 2,6-diisopropylphenyl (Dipp) substituted (halido-) bismuthanes, namely, Dipp(3)Bi (1) and compounds of the form DippBiX(2) (X=Cl, Br, I; 2-4). The compounds 2-4 show a variety of structural motifs in their solid state structures. Reactivity of 2 towards the nucleophiles LiNMe2 and MeLi was examined, where mostly scrambling reactions with a preference for two Dipp substituents at bismuth were observed. Therefore, the compounds Dipp(2)BiNMe(2) (5) and Dipp(2)BiMe (6) are the main products of these reactions. Moreover, new interpnictogen compounds with Bi-N, -P, and -Sb single bonds were prepared. Compound 5 was successfully used as precursor for the preparation of Dipp(2)BiNHtBu (7) and Dipp(2)BiSbMes(2) (8), one of very few isolated compounds with a Bi-Sb single bond. Moreover, bismuthanyl phosphanes bearing functional groups (Dipp(2)BiPtBu(SiMe3) (9), Dipp(2)BiPHtBu (10)) have been prepared. Compound 10 is the first isolated secondary phosphane with a bismuthanyl substituent. All isolated compounds were analyzed via IR and NMR spectroscopy, mass spectrometry, elemental analysis and single crystal X ray diffraction.