Synthesis and structural characterization of novel bridged platinum(II) biscarbene complexes

Michael Muehlhofer, Thomas Strassner, Eberhardt Herdtweck, Wolfgang A. Herrmann

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Novel bridged platinum(II) biscarbene complexes are reported: platinum(II) (3) and 1,1′-dimethyl-3,3′-ethylene-4-diimidazolin-2,2′-diylidene platinum(II) complexes 4 are directly accessible in high yields starting from platinum halides. The one-pot synthesis obviates the need for multi-step reactions via metal precursors or free carbenes. An X-ray crystal structure of 1,1′-dimethyl-3,3′-methylene-4-diimidazolin-2,2′-diylidene platinum(II) dibromide (3b) confirmed the structural similarity to the known corresponding palladium complexes. Since free 1,1′-di-R-3,3′-methylene-4-diimidazolin-2, 2′-diylidenes are only available in low yields this synthetic route provides an easy access to the corresponding carbene complexes.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalJournal of Organometallic Chemistry
Issue number2
StatePublished - 22 Oct 2002


  • NHC
  • Platinum(II) biscarbene complexes
  • X-ray structures


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