Synthesis and structure of tritylium salts

Abstract

Several tritylium compounds [Ph3C][A] have been isolated by salt metathesis or halide abstraction reactions starting from Ph3C–X (X = halogen) and Lewis acids in good yields (A = BF4, BCl4, AlCl4, GaCl4, PF6, AsF6, SbF6, SbCl6, CHB11H5Cl6, CHB11Cl11, CHB11H5Br6, CF3COO, CF3SO3, N3). The structures of 15 tritylium salts bearing different types of weakly coordinating anions (A) have been determined. The structures are discussed on the basis of ion pairing versus covalent bond formation and solid-state interactions in comparison with gas-phase data.

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Correspondence to Axel Schulz.

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Dedicated to Professor Dr. Magdolna Hargittai on the occasion of her 70th birthday.

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Hinz, A., Labbow, R., Reiß, F. et al. Synthesis and structure of tritylium salts. Struct Chem 26, 1641–1650 (2015). https://doi.org/10.1007/s11224-015-0638-0

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Keywords

  • Tritylium
  • Synthesis
  • Structure
  • Bonding