Bradley M. Kraft

Crystal structures of tris­[1-oxo­pyridine-2-olato(1−)]silicon(IV) chloride chloro­form-d1 disolvate, tris­[1-oxo­pyridine-2-olato(1−)]silicon(IV) chloride aceto­nitrile unqu­anti­fied solvate, and fac-tris­[1-oxo­pyridine-2-thiol­ato(1−)]silicon(IV) chloride chloro­form-d1 disolvate

The homoleptic triply-ligated cation in two silyl chloride salt solvates of 1-oxo-2-pyridinone is found to co-crystallize as a mixture of fac and mer isomers. A related silyl cation of 1-oxo-2-pyridinethione is found as the fac isomer.

Dichlorido-1κCl,3κCl-hexa­kis­[1,1,2,2,3,3(η5)-cyclo­penta­dien­yl]di-μ2-oxido-1:2κ2O:O;2:3κ2O:O-trizirconium(IV)

The title compound, [Zr3(C5H5)6Cl2O2], exists as discrete molecules possessing a series of three Cp2Zr units (Cp is cyclopentadienyl) bridged by oxide ligands and end-capped by chloride ligands. The Cp planes in the central and terminal zirconocene units form dihedral angles of 53.3 (2) and 53.5 (2)°, respectively. The two Zr—O—Zr bridge angles are nearly linear and form a planar Zr3O2 core. The molecule bears C2 symmetry with the central Zr atom lying on a crystallographic twofold axis.