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Self‐Assembly of Halogenated Cobaltacarborane Compounds: Boron‐Assisted CH⋅⋅⋅XB Hydrogen Bonds?
Author(s) -
Giner Planas José,
Teixidor Francesc,
Viñas Clara,
Light Mark E.,
Hursthouse Michael B.
Publication year - 2007
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200601297
Subject(s) - boron , halogen , hydrogen bond , derivative (finance) , intermolecular force , chemistry , halogen bond , supramolecular chemistry , hydrogen , crystallography , molecule , inorganic chemistry , stereochemistry , crystal structure , organic chemistry , alkyl , financial economics , economics
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 CH⋅⋅⋅XB 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.