Chlorido­{2-[(di­methyl­amino)­meth­yl]benzene­seleno­lato-κ²N,Se}(tri­phenyl­phosphane-κP)palladium(II)

The asymmetric unit of the title compound, [PdCl(C₉H₁₂NSe)(C₁₈H₁₅P)], contains two independent mol­ecules. In both cases, the Pd²⁺ cations are coordinated by the Se and N atoms of the chelating bidentate 2-[(di­methyl­amino)­meth­yl]benzene­seleno­late ligand. The chloride ligand lies trans to selenium and the tri­phenyl­phosphane ligand is trans to nitro­gen. The Pd—Se bond lengths in the two independent coordination environments of Pd are 2.3801 (4) and 2.3852 (4) Å, the Pd—P bond lengths are 2.2562 (8) and 2.2471 (8) Å, the Pd—N bond lengths are 2.172 (2) and 2.158 (2) Å, and the Pd—Cl bond lengths are 2.3816 (8) and 2.3801 (8) Å. The square-planar coordination around one Pd²⁺ cation is less distorted than that around the other.

Crystal structure of bis­{μ-2-[(di­methyl­amino)­meth­yl]ferrocene­seleno­lato}bis[chlorido­palladium(II)]

The dinuclear title compound, [PdCl{Se[(C₅H₅)Fe(C₅H₃)₂CH₂N(CH₃)₂]}]₂ was obtained by the reaction of [PdCl₂(NCPh)₂] with 2-[(N,N′-di­methyl­amino)­meth­yl]ferro­cene­seleno­late and the crystals for the structure determination were grown from a mixture of THF and n-hexane. Both Pd^II atoms are coordinated by the bridging Se atoms and by the amino N atoms of the bidentate 2-[(N,N′-di­methyl­amino)­meth­yl]ferrocene­seleno­late ligand, as well as by Cl atoms, and show a distorted square-planar coordination. The angle between the Pd—Se—Se planes of the two Pd atoms is 149.31 (3)°. Weak Cl...H hydrogen bonds link the binuclear complexes into a three-dimensional network.

Crystal structure of tris­(phenyl­seleno­lato-κSe)tris­(tetra­hydro­furan-κO)thulium(III)

In the title compound, [Tm(C₆H₅Se)₃(C₄H₈O)₃], the Tm^III atom lies on a threefold rotation axis and is coordinated by three phenyl­seleno­late ligands and three tetra­hydro­furan ligands leading to a distorted fac-octa­hedral coordination environment. The Tm—Se and Tm—O bond lengths are 2.7692 (17) and 2.345 (10) Å, respectively, and the bond angles are 91.32 (6)° for Se—Tm—Se, 92.6 (2) and 94.4 (2)° for Se—Tm—O, and 81.2 (3)° for O—Tm—O. In the crystal, the discrete complexes are linked by van der Waals inter­actions only. The crystal was refined as a non-merohedral twin (ratio = 0.65:0.35).

Crystal structure of bis­[(5-oxo­oxolan-3-yl)triphen­ylphosphanium] hexa­iodido­tellurate(IV)

The asymmetric unit of the title salt, [C₂₂H₂₀O₂P]₂⁺[TeI₆]²⁻, consists of one triphenyl(5-oxooxolan-3-yl)phosphanium cation and one half of a hexa­iodido­tellurate(IV) dianion. The Te atom is located at an inversion centre and is octa­hedrally coordinated by six I atoms. The Te—I bond lengths range from 2.9255 (9) to 2.9439 (10) Å. The I—Te—I angles between cis-iodide ligands are in the range 87.85 (3)–92.15 (3)°. In the crystal, the components are connected by C—H...I inter­actions. In the final refinement of the compound a void of 32 ų was observed.