Co-ordination chemistry of 1,1′-bis(diphenylthiophosphoryl)ferrocene (dptpf) towards silver(I). Crystal structure of the polymeric complex [Ag2(µ-dptpf){(SPPh2)2CH2}2]n[ClO4]2n‡

Abstract

The ligand 1,1′-bis(diphenylthiophosphoryl)ferrocene, dptpf, reacted with various silver complexes to afford two-, three- or four-co-ordinate species. Thus the reaction of dptpf with [Ag(OClO₃)(PPh₃)] in 1∶1 or 1∶2 molar ratio gave the three-co-ordinate [Ag(dptpf)(PPh₃)]ClO₄ or the linear [Ag₂(dptpf)(PPh₃)₂][ClO₄]₂ derivatives. Similarly, the treatment of dptpf with AgClO₄ in 2∶1 or 1∶1 molar ratio afforded the homoleptic compounds [Ag(dptpf)₂]ClO₄ or [Ag(dptpf)]ClO₄; in the latter dptpf acts as a trans-chelating ligand. The complex [Ag(dptpf)]ClO₄ can react further with bidentate ligands such as 2,2′-bipyridine (bipy) or bis(diphenylthiophosphoryl)methane, (SPPh₂)₂CH₂, leading to the four-co-ordinate [Ag(dptpf)(bipy)]ClO₄ or the four-co-ordinate polymeric species [Ag₂(µ-dptpf){(SPPh₂)₂CH₂}₂]_n[ClO₄]_2n, which was characterised by X-ray diffraction.