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

Abstract

A palladium(II) complex {systematic name: dichlorido[1,3-di-tert-butyl-2,4-bis(tert-butylamino)-1,3,2λ5,4λ5-diazadiphosphetidine-2,4-diselone-κ2 Se,Se′]palladium(II)}, cis-[PdCl2{I}], (II), containing a bis(selenium) ligand based on cyclodiphosph(V)azane, cis-[( t BuNH)(Se)P(μ-N t Bu)2P(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) Å. The coordination around PdII shows a slightly distorted square-planar geometry, as indicated by the angle between the [PdCl2] and [PdSe2] planes of 5.92 (3)°. In the crystal, the molecules are interlinked through weak N—H...Cl and C—H...Cl hydrogen-bonding interactions.