Crystal structure of a palladium(II) complex containing the wide bite-angle bis-(selenium) ligand, cis-[( (t) BuNH)(Se)P(μ-N (t) Bu)(2)P(Se)(NH (t) Bu)].

A palladium(II) complex {systematic name: dichlorido[1,3-di-tert-butyl-2,4-bis(tert-butylamino)-1,3,2λ(5),4λ(5)-diazadiphosphetidine-2,4-diselone-κ(2)Se,Se']pal-ladium(II)}, cis-[PdCl(2){I}], (II), containing a bis-(selenium) ligand based on cyclo-diphosph(V)azane, cis-[( (t) BuNH)(Se)P(μ-N (t) Bu)(2)P(Se)(NH (t) Bu)], (I), has been synthesized and structurally characterized. The crystal structure of complex II reveals that the ligand chelates through selenium donors with the natural bite-angle of 110.54†(1)° and a Pd-Se bond distance of 2.444†(1)†à . The coordination around Pd(II) shows a slightly distorted square-planar geometry, as indicated by the angle between the [PdCl(2)] and [PdSe(2)] planes of 5.92†(3)°. In the crystal, the mol-ecules are inter-linked through weak N-H⋯Cl and C-H⋯Cl hydrogen-bonding inter-actions.