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DOI: 10.1039/A606311J (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 559-562

Use of Se4N4 and Se(NSO)2 in the preparation of palladium adducts of diselenium dinitride, Se2N2; crystal structure of [PPh4]2[Pd2Br6(Se2 N2)]

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Paul F. Kelly, Alexandra M. Z. Slawin and Antonio Soriano-Rama

Abstract

Reaction of Se4N4 with [NBun4]2[Pd2Br6] at 100 °C in CH2Cl2 resulted in [NBun4]2[Pd2Br6 (Se2N2)] 1a in high yield (67%). In contrast to the reaction of [PPh4]2[Pd2Br6] with S4N4, which generates a number of products, the tetrabutylammonium salt generated only [NBun4]2[Pd2Br6 (S2N2)] 1b; comparison of the IR spectra of 1a and 1b allows unambiguous identification of the two bands due to E2N2 vibrations. While reaction of S(NSO)2 with [Pt(PPh3)3] leads to a mixture of [Pt(S2N2)(PPh3)2] and [Pt(NSO)2(PPh3)2], only the latter species forms in the analogous reaction of Se(NSO)2. Two different results were also found in reactions with [PPh4]2[Pd2Br6]; while S(NSO)2 appears surprisingly inert to this reagent, Se(NSO)2 reacts, when present in excess, to give the unexpected product [PPh4]2[Pd2Br6(Se2 N2)] 1c. The crystal structure of the latter confirms the presence of the adducted diselenium dinitride unit.

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