Synthesis and Crystal Structure of a Diplatinum Cyclopentadienyldiphenylphosphine Sulphide Bridged Complex
The mixed early-late Ti-Pt2 compound [(η5-C5H4SiMe3) Ti(μ3-1η5-C5H4P(S) Ph2-2,3κS)(μ-SPh)2{Pt(C6 F5)2}2] (3) containing a functionalised thiophosphorylcyclopentadienyl S=PPh2C5H4 bridging ligand has been obtained by reaction of [(η5-C5H4SiMe3) (η5-C5H4P(S)Ph2) Ti(SPh)2] (1) with 2 equivalents of cis...
| Authors: | , , , , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2001 |
| Country: | España |
| Institution: | Universidad de La Rioja (UR) |
| Repository: | RIUR. Repositorio Institucional de la Universidad de La Rioja |
| OAI Identifier: | oai:portal.dialnet.es:doc/5bbc6926b750603269e8161a |
| Online Access: | https://investigacion.unirioja.es/documentos/5bbc6926b750603269e8161a |
| Access Level: | Open access |
| Keyword: | Bridging Cyclopentadienyldiphenylphosphine sulphide Diplatinum Trimetallic TiPt<sub>2</sub> complex |
| Summary: | The mixed early-late Ti-Pt2 compound [(η5-C5H4SiMe3) Ti(μ3-1η5-C5H4P(S) Ph2-2,3κS)(μ-SPh)2{Pt(C6 F5)2}2] (3) containing a functionalised thiophosphorylcyclopentadienyl S=PPh2C5H4 bridging ligand has been obtained by reaction of [(η5-C5H4SiMe3) (η5-C5H4P(S)Ph2) Ti(SPh)2] (1) with 2 equivalents of cis-[Pt(C6F5)2(thf)2]. The crystallisation of 3 in CH2Cl2/MeOH at -20°C gave the unexpected diplatinum complex [Pt(C6F5)2(μ-SPPh2 C5H5)]2 (4) with an unusual double bis-cyclopentadienyldiphosphine sulphide bridging system (μ-κS), which has been characterised by X-ray diffraction. As an alternative route to the synthesis of 4 the reaction of cis-[Pt(C6F5)2(thf)2] with S=PPh2C5H5 has been studied. Independently of the stoichiometry employed, this reaction gives mixtures of 4 and the novel mononuclear complex cis-[Pt(C6F5)2(S=PPh2 C5H5)2] (6). Low temperature control of this reaction indicates that both complexes (4 and 6) are formed through a common intermediate identified as cis-[Pt(C6F5)2(S=PPh2 C5H5)(thf)] (5) on the basis of spectroscopic techniques. © 2001 Elsevier Science B.V. |
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