Marina M. Kireenko

6-Benzyl-2-methyl-1,3-bis­(penta­fluoro­phen­yl)-1,3,6,2-triaza­alumocane

In the title compound, [Al(CH3)(C23H15F10N3)], the AlIII atom is coordinated in a distorted tetrahedral geometry by three N atoms from the tridentate amine and by one C atom of the methyl substituent. Further, there is a short intramolecular Al⋯F contact [2.5717 (11) Å], leading to an overall distorted trigonal–bipyramidal coordination environment around AlIII.

Crystal structure of a mixed-valence μ-oxide Sn12 cluster.

The mixed-valence μ-oxide Sn12 cluster, decacarbonyltetra-μ4-oxido-hexa-μ3-oxido-tetrakis[μ-2,2′-(pyridine-2,6-diyl)bis(1,1-diphenylethanolato)]decatin(II)ditin(IV)dimolybdenum(O)(2 Mo—Sn) toluene heptasolvate, [Mo2Sn12(C33H27NO2)4O10(CO)10]·7C7H8, has a crystallographically imposed inversion centre. The asymmetric unit also contains three and a half toluene solvent molecules, one of which is disordered about a centre of symmetry. The complex molecule comprises six distinct Sn atom species with four different coordination numbers, namely 3, 4, 5, and 6. The SnII atoms forming the central Sn10O10 core adopt distorted trigonal–pyramidal, square-pyramidal and octahedral coordination geometries provided by the μ-oxide atoms and by the O- and N-donor atoms of two pyridinediethanolate ligands. The terminal SnIV atoms have distorted trigonal–bipyramidal coordination geometries, with a μ4-oxide atom and the N atom of a pyridinediethanolate ligand occupying the axial positions, and the Mo atom of a Mo(CO)5 group and the alkoxy O atoms of a ligand forming the equatorial plane. In the crystal, weak intra- and intermolecular C—H⋯O hydrogen bonds are observed.

Germylenes derived from pyridine-containing diols: reactions with diphenylphosphoryl azide and 9,10-phenanthrenequinone

A study was carried out on the behavior of monomeric germylenes derived from pyridine-containing diols in reactions with diphenylphosphoryl azide and 9,10-phenanthrenequinone. It was found that the germanium atom increases its oxidation state to 4+ in these reactions. The structure of the product of the reaction with 9,10-phenanthrenequinone was confirmed by X-ray structural analysis, which showed a transannular germanium-nitrogen interaction in this product.