1,1′-(Diselanediylbis{[P,P-diphenyl-N-(tri­methyl­sil­yl)phospho­rimido­yl]methanylyl­idene})bis­[1,1-diphenyl-N-(tri­methyl­sil­yl)-λ⁵-phosphanamine] pentane disolvate

The title compound, C₆₂H₇₈N₄P₄Se₂Si₄·2C₅H₁₂, is made up of two [SeC(PPh₂NSiMe₃)(PPh₂NHSiMe₃)] units related by an inversion center situated at the mid-point of the diselenide bond. It crystallized with two disordered mol­ecules of pentane used as solvent of crystallization. It is a rare example of an anti­periplanar diselenide and exhibits a long Se—Se bond of 2.4717 (8) Å. The Se—C bond length of 1.876 (5) Å is short in comparison with the range of values found for other diselenides (1.91–1.97 Å). The mol­ecule exhibits two intra­molecular N—H...N hydrogen bonds. In the crystal, there are no significant inter­molecular inter­actions present. One of the Me₃Si– groups is disordered over two positions with a refined occupancy ratio of 0.708 (8):0.292 (8). The contribution of the disordered solvent to the scattering was removed with the SQUEEZE option of PLATON [Spek (2009). Acta Cryst. D65, 148–155]. The solvent contribution has been included in the reported mol­ecular weight and density.

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.