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A trigonal coordination of Au(I) phosphane complexes stabilized by O-H ^⋯ X (X = Cl^-, Br^-, I^-) interactions.

ABSTRACT: In this work, we show that intramolecular hydrogen bonding can be used to stabilize tri-coordinated phosphane-gold(I) complexes. Two molecular structures of 2-(diphenylphosphino)benzoic acid (L) coordinated to a gold(I) atom were determined by single-crystal X-ray diffraction. The linear L-Au-Br shows a standard linear coordination and dimerizes via hydrogen bonds of the carboxylic acid. Upon addition of two additional phosphane ligands the complex [L₃Au]X is formed which is stabilized by three intramolecular -C(O)O-H ^… X hydrogen bonds as proven by the X-ray structure of the respective chlorido-complex. X-ray powder diffractograms suggest the same structure also for X^- = Br^- and I^-.

Supplementary information

The online version contains supplementary material available at 10.1007/s00706-021-02843-2.

SUBMITTER: Grundlinger P

PROVIDER: S-EPMC8550744 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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A trigonal coordination of Au(I) phosphane complexes stabilized by O-H ⋯ X (X = Cl-, Br-, I-) interactions.

Gründlinger Petra P Mardare Cezarina Cela CC Wagner Thorsten T Monkowius Uwe U

Monatshefte fur chemie 20210915 10

In this work, we show that intramolecular hydrogen bonding can be used to stabilize tri-coordinated phosphane-gold(I) complexes. Two molecular structures of 2-(diphenylphosphino)benzoic acid (L) coordinated to a gold(I) atom were determined by single-crystal X-ray diffraction. The linear L-Au-Br shows a standard linear coordination and dimerizes via hydrogen bonds of the carboxylic acid. Upon addition of two additional phosphane ligands the complex [L3Au]X is formed which is stabilize ...[more]

PMID: 34720196

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