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An Experimental Evidence of a Metal−Metal Bond in μ ‐Carbonylhexacarbonyl[ μ ‐(5‐oxofuran‐2(5 H )‐ylidene‐ κC , κC )]‐dicobalt( Co−Co )[Co 2 (CO) 6 ( μ ‐CO)( μ ‐C 4 O 2 H 2 )]
Author(s) -
Bianchi Riccardo,
Gervasio Giuliana,
Marabello Domenica
Publication year - 2001
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/1522-2675(20010321)84:3<722::aid-hlca722>3.0.co;2-0
Subject(s) - chemistry , intramolecular force , orthorhombic crystal system , crystallography , metal , intermolecular force , molecule , group 2 organometallic chemistry , triple bond , crystal structure , computational chemistry , stereochemistry , double bond , polymer chemistry , organic chemistry
The orthorhombic crystal structure of [Co 2 (CO) 6 ( μ ‐CO)( μ ‐C 4 O 2 H 2 )] ( 1 ) was determined at 150 K ( Fig. 1 ). Two C−H⋅⋅⋅O bonds connect the molecules, forming waving ribbons along the b axis. The experimental electron density, determined with the aspherical‐atom formalism, was analyzed with the topological theory of molecular structure. The presence of the Co−Co bond critical point indicates for the first time the existence of a metal−metal bond in a system with bridged ligands. The bond critical properties of the intramolecular bonds and of the intermolecular interactions show features similar to those found in [Mn 2 (CO) 10 ], confirming our previously established bonding classification for organometallic and coordination compounds.