The reaction of [Bu4N]2[Pd2Br6(Se2N2)] with [14]aneS4; an effective source of the diselenium dinitride unit.

Reaction of [Bu(4)N](2)[Pd(2)Br(6)(Se(2)N(2))] with [14]aneS(4) results in eventual formation of Se(4)N(4); intermediates in this reaction include an air-sensitive insoluble material which reacts with [PtCl(2)(PMe(2)Ph)](2) to give the first example of a platinum adduct of Se(2)N(2) and with [Pd(2)Br(6)](2-) to regenerate the starting material.

Synthetic applications of (Me3SiNSN)2E (E = S, Se) in chalcogen-nitrogen chemistry: formation and structural characterization of Cl2TeESN2 (E = S, Se) and [PPh4]2[Pd2(mu-Se2N2S)X4] (X = Cl, Br).

The reaction of (Me3SiNSN)2S with TeCl4 in CH2Cl2 affords Cl2TeS2N2 (1) and that of (Me3SiNSN)2Se with TeCl4 produces Cl2TeSeSN2 (2) in good yields. The products were characterized by X-ray crystallography, as well as by NMR and vibrational spectroscopy and EI mass spectrometry. The Raman spectra were assigned by utilizing DFT molecular orbital calculations.

Bis(tetra-n-butylammonium) (mu-N,N'-diselenium dinitride)bis[tribromopalladate(II)].

The reaction of Se(4)N(4) with (Bu(4)N)(2)[Pd(2)Br(6)] gives the title compound, (C(16)H(36)N)(2)[Pd(2)Br(6)(N(2)Se(2))], in good yield. The [Pd(2)(Se(2)N(2))Br(6)](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 Se(2)N(2) unit to Pd through the N atoms, as previously assigned by IR spectroscopic analysis [Kelly, Slawin & Soriano-Rama (1997).