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Updated: May 22, 2026

Chemoselective Preparation of 1-Iodoalkynes, 1,2-Diiodoalkenes, and 1,1,2-Triiodoalkenes Based on the Oxidative Iodination of Terminal Alkynes
Published on: September 12, 2018
Iodido(tri-tert-butyl-phosphane-κP)gold(I)
Inge Sänger1, Hans-Wolfram Lerner, Tanja Sinke
1Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt am Main, Germany.
This study details the crystal structure of a gold(I) iodide complex, [AuI(C12H27P)], revealing an almost linear coordination around the gold atom. The findings provide insights into the geometry of gold(I) compounds.
Area of Science:
- Inorganic Chemistry
- Crystallography
- Coordination Chemistry
Background:
- Gold(I) complexes are of interest due to their diverse applications.
- Understanding the coordination geometry of gold(I) is crucial for predicting reactivity and properties.
Purpose of the Study:
- To characterize the crystal structure of the gold(I) iodide complex, [AuI(C12H27P)].
- To analyze the coordination environment around the gold(I) atom.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular structure.
- The crystal structure was refined to high accuracy.
Main Results:
- The title compound, [AuI(C12H27P)], was synthesized and characterized.
- The gold(I) atom exhibits an almost linear coordination geometry.
- The P-Au-I bond angle was measured at 178.52(3)°.
- The Au-P bond length is 2.2723(14) Å and the Au-I bond length is 2.5626(6) Å.
Conclusions:
- The structural analysis confirms the nearly linear coordination of gold(I) in this phosphine-ligated complex.
- This precise geometric data contributes to the understanding of bonding and structure in gold(I) chemistry.
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