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Updated: Dec 6, 2025
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Synthesis and Characterization of a Novel Triangular Rh2Au Cluster Compound Inspired by the Isolobality Concept
Hans-Christian Böttcher1, Marion Graf1, Peter Mayer1
1Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377, München, Germany.
Abstract:
The synthesis of [Rh2(η5-Cp)2(μ-H)(μ-PPh2)2]BF4 (2) by protonation reaction of the metal basic complex [Rh2(η5-Cp)2(μ-PPh2)2] (1) with tetrafluoroboric acid in diethyl ether is described. Complex salt 2 was obtained in high yield and fully characterized by spectroscopic means and X-ray crystal diffraction. Applying the isolobal analogy between H and the fragment Au(PPh3) as a synthetic strategy on the reaction of compound 2 with equimolar amounts of [Au(CH3)(PPh3)] in refluxing acetone resulted in the formation of the expected triangular cluster compound [Rh2{μ-Au(PPh3)}(η5-Cp)2(μ-PPh2)2]BF4 (3) in good yield. Metal cluster salt 3 was fully characterized by spectroscopic data and its molecular structure in the crystal was determined by X-ray diffraction. The structural comparison of the protonated dirhodium core in the cationic complex of 2 with the Rh2Au framework in 3 is in good accordance with the isolobal relation between H+ and Au+ because they share the respective same position in these closely related molecular structures.
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