Novel silver-telluride clusters stabilized with bidentate phosphine ligands. Synthesis and structure of {[Ag₅(TePh)₆(Ph₂P(CH₂)₂PPh₃)](Ph₂P(CH₂)₂PPh₂)}_¥, [Ag₁₈Te(TePh)₁₅(Ph₂P(CH₂)₃PPh₂)₃Cl], and [Ag₃₈Te₁₃(TetBu)₁₂(Ph₂P(CH₂)₂PPh₂)₆]. Langetepe, Timo; Fenske, Dieter. Institut fur Anorganische Chemie, Universitat Karlsruhe (TH), Germany. Z. Anorg. Allg. Chem. (2001), 627(5), 820-826. ISSN: 0044-2313.

Bidentate phosphine ligands were found effective to stabilize polynuclear cores containing Ag and chalcogenide ligands. They can act as intra- and intermol. bridges between the Ag centers. The clusters {[Ag₅(TePh)₆(Ph₂P(CH₂)₂PPh₃)](Ph₂P(CH₂)₂PPh₂)}_¥, (I), [Ag₁₈Te(TePh)₁₅(Ph₂P(CH₂)₃PPh₂)₃Cl] (II), and [Ag₃₈Te₁₃ (TetBu)₁₂(Ph₂P(CH₂)₂PPh₂)₆] (III) were prepared and their molecular structure determined. Compounds II and III are molecular structures with seperated cluster cores while I forms a polymeric chain bridged by phosphine ligands