PUB - Publikationen an der Universität Bielefeld

The particular role of the phosphaneiminato ligand as a donor is investigated for a) nitrenes (phosphinidenes) and carbenes and b) cubane formation with transition metals. Accordingly, and as shown for the case a) the ligand is a stronger pi-donor than an amino group and can be considered as a special case of imine-type substituents. The latter are very effective in pi-donation. In the case b), i.e. the cubane formation with transition metals, one has to consider transition metals with a partially or completely filled d-shell (with electrons). Hence depending on the transition metal, cubanes are build with weak ferromagnetic coupled or closed shell systems. For the cubanes with closed shell character the matter of insertion of halide anions is discussed. In the last chapter of the review the bond stretching in the dithionitrosyl complexes with thenium is characterized.