Syntheses and Properties of Gold–Organotin Sulfide Clusters

Abstract

We report that reactions of the binary organotin sulfide cluster [(R¹Sn)₃S₄]Cl [A; R¹ = CMe₂CH₂C(O)Me] with gold(I) phosphane complexes yield discrete ternary complexes [(R¹Sn)₂(AuPMe₃)₂S₄] (1) and [(R²Sn)₂(AuPMe₃)₂S₄] [2; R² = CMe₂CH₂C(NNH₂)Me], which are related to recently published complexes [(R^1,2Sn)₂(AuPPh₃)₂S₄] (B and C). Further, we present a binary tin sulfide cluster that cocrystallizes with a structure-directing salt of a gold phosphane complex in [Au(dppe)₂][(R³Sn)₄S₆Cl] [3; R³ = CMe₂CH₂C(NNHPh)Me]. The nature of the product depends on the choice of the phosphane ligand as well as the addition of hydrazine hydrate or phenylhydrazine. Additionally, we report on the photophysical properties of 1, 2, B, and C, which indicate that the different phosphane ligands only have a slight influence on the optical responses. The structure, however, has a significant impact on the luminescence efficiency.