Synthesis and Characterization of Novel Transition Metal Pnictogenide Compounds.

Abstract

AbstractA series of transition metal‐pnictogenide compounds were prepared starting from [(Dipp2NacNac)MCl] (M=Cr, Mn, Fe, Zn) (Dipp2NacNac=HC{C(Me)N(Dipp)}2) and [M'E(SiMe3)2] (M'=Li, K; E=P, As, Sb) as well as [Li(Et2O)nPH2] and [Li(tmeda)AsH2]. In the course of these investigations we were able to characterize all permutations for compounds of the composition [(Dipp2NacNac)ZnE(SiMe3)2] (E=P, As, Sb) and [(Dipp2NacNac)ZnEH2] (E=P, As). Moreover, the synthesis of selected compounds of type [(Dipp2NacNac)ME(SiMe3)2] for M=Cr, Mn, Fe and E=P−Sb are described. As part of our efforts, we established a number of bonding motifs that are underexplored in the literature to date. All isolated compounds, were examined by NMR spectroscopy, IR spectroscopy, Elemental analysis and X‐Ray structure analysis. DFT calculations on the chromium compounds were performed to investigate the binding situation between chromium and the group 15 element in more detail.