Reduction of group 4 metallocene dichlorides with magnesium in the presence of cyclic disilylated stannylene or plumbylene phosphine adducts yielded the respective metallocene tetrylene phosphine complexes. Under the same conditions the use of the respective dimerized stannylene or plumbylene gave metallocene ditetrylene complexes. A computational analysis of these reactions revealed for all in...

While the reactivities of several transient silylenes and germylenes (the heavy homologues of singlet carbenes) have been characterized in detail in the gas phase and in solution, the chemistry of the corresponding tin derivatives (“stannylenes”) has remained virtually unexplored. To this end, the photochemistry of 3,4-dimethyl-1,1-diphenyl-1-stannacyclopent-3-ene (2) has been studied through s...

Cyclic and non-cyclic bis(am ino)phosphenium cations (1 to 4) together w ith their precursors (bis(am ino)phosphorus chlorides 5 to 8) and som e other bis(am ino)phosphorus com pounds (9 to 14) have been studied by l3C, 15N (natural abundance), 29Si and 3IP N M R spectroscopy. 15N chem ical shifts and coupling constants ' / ( 31P 15N ) o f phosphenium cations have been deter­ m ined for the fir...

The performances of Møller-Plesset second-order perturbation theory (MP2) and density functional theory (DFT) have been assessed for the purposes of investigating the interaction between stannylenes and aromatic molecules. The complexes between SnX2 (where X = H, F, Cl, Br, and I) and benzene or pyridine are considered. Structural and energetic properties of such complexes are calculated using ...

Stable germanium(II) and lead(II) amido complexes {LO(i)}M(N(SiMe3)2) (M = Ge(II), Pb(II)) bearing amino(ether)phenolate ligands are readily available using the proteo-ligands {LO(i)}H of general formula 2-CH2NR2-4,6-tBu2-C6H2OH (i = 1, NR2 = N((CH2)2OCH3)2; i = 2, NR2 = NEt2; i = 3, NR2 = aza-15-crown-5) and M(N(SiMe3)2)2 precursors. The molecular structures of these germylenes and plumbylenes...