A Hydrido η1-Alkynyl Diplatinum Complex Obtained from a Phosphinito Phosphanido Complex and Trimethylsilylacetylene

Inorganics

Mario Latronico¹  Vito Gallo¹  Elena Lalinde²  Santiago Ruiz²  Stefano Todisco¹  Piero Mastrorilli¹ 

[1] Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, via Orabona 4, I-70125 Bari, Italy; E-Mails:;Departamento de Química, University of La Rioja, Madre de Dios 51, 26006 Logroño, Spain; E-Mails:

关键词: acetylide complexes;    phosphinito complexes;    bridging hydrides;    C–H activation;   

DOI  :  10.3390/inorganics2040591

来源: mdpi

【 摘 要 】

The reaction of (trimethylsilyl)acetylene with the phosphinito phosphanido Pt(I) complex [(PHCy₂)Pt(μ-PCy₂){κ²P,O-μ-P(O)Cy₂}Pt(PHCy₂)](Pt-Pt) (1) results in the protonation of the Pt-Pt bond with the formation of the bridging hydride complex [(PHCy₂)(Me₃SiC≡C)Pt(μ-PCy₂)(μ-H) Pt(PHCy₂){κP-P(O)Cy₂}](Pt-Pt) (2), which was characterized by spectroscopic, spectrometric and XRD analyses. Complex 2 exhibits in the solid state at 77 K a long-lived, weak, orange emission assigned as metal-metal to ligand charge transfer (MMLCT) (L = alkynyl) due to the presence of a very short Pt···Pt distance [2.8209(2) Å]. Reaction of 2 with etherate HBF₄ results in the selective protonation of the phosphinito ligand to afford the species [(PHCy₂)(Me₃SiC≡C)Pt(μ-PCy₂)(μ-H)Pt(PHCy₂){κP-P(OH)Cy₂}](Pt-Pt)[BF₄] ([3]BF₄).

【 授权许可】

CC BY   
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