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Synthesis and Characterization of Nonclassical Interhalides Based on Bromine Monochloride
Benjamin Schmidt1, Karsten Sonnenberg1, Helmut Beckers1
1Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, FU Berlin, Fabeckstrasse 34/36, 14195, Berlin, Germany.
Angewandte Chemie (International Ed. in English)
|May 10, 2018
Summary
Bromochloride (BrCl) forms stronger halogen bonds than related compounds, enabling the creation and characterization of novel polyinterhalides with chloride as the central ion. This study reports new structures and bonding insights.
Area of Science:
- Inorganic Chemistry
- Solid-State Chemistry
- Halogen Bonding
Background:
- Polyhalogen anions are important in inorganic chemistry.
- Understanding halogen bonding is key to designing new materials.
Purpose of the Study:
- To synthesize and characterize novel polyinterhalide compounds.
- To investigate the role of bromochloride (BrCl) in halogen bonding.
- To explore new coordination geometries in interhalide anions.
Main Methods:
- Single-crystal X-ray diffraction (XRD) for structural determination.
- Nuclear Magnetic Resonance (NMR) and Raman spectroscopy for characterization.
- Quantum-chemical calculations to support experimental findings.
Main Results:
- Characterization of new polyinterhalides: [AsPh4][Cl(BrCl)3] and [CCl(NMe2)2][Cl(BrCl)5].
- First report of an octahedrally coordinated nonclassical interhalide: [Cl(BrCl)6]-.
- BrCl forms stronger halogen bonds than Cl2 or Br2 due to a distinct σ-hole.
Conclusions:
- The enhanced halogen bonding ability of BrCl facilitates the formation of complex polyinterhalides.
- New insights into the structural diversity and bonding of interhalide compounds.
- Demonstration of chloride as a central coordinating ion in novel polyinterhalide structures.
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