Bis­(tetra-n-butyl­ammonium) (μ-N,N′-diselenium dinitride)­bis­[tri­bromo­palladate(II)]

The reaction of Se4N4 with (Bu4N)2[Pd2Br6] gives the title compound, (C16H36N)2[Pd2Br6(N2Se2)], in good yield. The [Pd2(Se2N2)Br6]2− anion lies on an inversion centre, and therefore the asymmetric unit contains half a formula unit. The crystal structure confirms the coordination of the Se2N2 unit to Pd through the N atoms, as previously assigned by IR spectroscopic analysis [Kelly, Slawin & Soriano‐Rama (1997). J. Chem. Soc. Dalton Trans. pp. 559–562]. The title compound contains the longest Pd—N bond so far observed for such systems.