Self-Assembly of Halogenated Cobaltacarborane Compounds: Boron-Assisted CH⋅⋅⋅XB Hydrogen Bonds?

✍ Scribed by José Giner Planas; Francesc Teixidor; Clara Viñas; Mark E. Light; Michael B. Hursthouse

• Book ID: 102794553
• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 847 KB
• Volume: 13
• Category: Article
• ISSN: 0947-6539
• DOI: 10.1002/chem.200601297

✦ Synopsis

Abstract

Full structural characterisation and complete synthetic procedures for three monohalogenated cobaltacarborane compounds closo‐[3‐Co(η^5^‐C~5~H~5~)‐8‐X‐1,2‐C~2~B~9~H~10~] (X = Cl (1), Br (2), I (3)) and the dibromo derivative closo‐[3‐Co(η^5^‐C~5~H~5~)‐8,9‐Br~2~‐1,2‐C~2~B~9~H~9~] (4) are reported. The supramolecular structures of 1, 3, and 4 reveal the existence of intermolecular CH⋅⋅⋅XB interactions. The role of these interactions has been investigated through a CSD search and subsequent analysis of the reported crystalline compounds. The results show that halogens become reasonably good hydrogen‐bond acceptors when bonded to boron and, in this respect, are comparable in strength to metal‐bound halogens.