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Journal of Chemical Crystallography

, Volume 38, Issue 2, pp 123–127 | Cite as

Two Nearly Isoformular Isomeric Dinuclear Platinum(II) Complexes with Planar and Butterfly [Pt22-S)2] Core Structures

  • Sylvain Bernès
  • Luis Villanueva
  • Hugo Torrens
Original paper

Abstract

Two dinuclear PtII complexes bearing fluorinated phosphine and thiolate ligands were synthesized from mononuclear starting materials, and characterized. Complex [(PPh2(C6F5))(SC6F5)Pt(μ2-SC6F5)2Pt(SC6F5)(PPh2(C6F5))] has phospine ligands arranged trans and presents a planar [Pt22-S)2] core structure, imposed by symmetry. In contrast, the almost isoformular complex [(PPh(C6F5)2)(SC6F5)Pt(μ2-SC6F5)2Pt(SC6F5)(PPh(C6F5)2)] revealed to be a butterfly molecule with phosphine ligands in a cis configuration. In both complexes, two pentafluorobenzenethiolate ligands bridge metal centers in an anti conformation. Both compounds have been X-ray characterized. Trans complex: a = 11.8576(13) Å, b = 12.3237(14) Å, c = 13.4644(16) Å, α = 90.528(9)°, β = 113.866(9)°, γ = 107.698(9)°, \( P\,\bar 1 \); cis complex: a = 24.368(2) Å, b = 15.043(2) Å, c = 37.596(7) Å, β = 93.69(1)°, C2/c.

Index Abstract

Two Nearly Isoformular Isomeric Dinuclear Platinum(II) Complexes with Planar and Butterfly [Pt 2 2 -S ) 2 ] Core Structures

Sylvain Bernès, Luis Villanueva & Hugo Torrens

Two dinuclear PtII complexes bearing fluorinated phosphine and thiolate ligands were X-ray characterized, [(PPh2(C6F5))(SC6F5)Pt(μ2-SC6F5)2Pt(SC6F5)(PPh2(C6F5))] and [(PPh(C6F5)2)(SC6F5)Pt(μ2-SC6F5)2Pt(SC6F5)(PPh(C6F5)2)]. The [Pt22-S)2] core is constrained by symmetry to be planar in the former complex, affording a trans arrangement for non-bridging ligands, whereas the latter is a butterfly molecule with a cis configuration.

Keywords

Platinum Fluorinated ligands Phosphine Thiolate X-ray structure 

Notes

Acknowledgments

We thank DGAPA (IN119305) and CONACyT (44494Q) for financial support of this research.

Supplementary material

10870_2007_9275_MOESM1_ESM.pdf (202 kb)
ESM1 (PDF 202 kb)

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Sylvain Bernès
    • 1
  • Luis Villanueva
    • 2
  • Hugo Torrens
    • 2
  1. 1.DEP, Facultad de Ciencias QuímicasUANLMonterreyMexico
  2. 2.Facultad de QuímicaUNAM, Ciudad UniversitariaMexico Mexico

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