An Experimental Evidence of a Metal−Metal Bond in μ-Carbonylhexacarbonyl[μ-(5-oxofuran-2(5H)-ylidene-κC,κC)]-dicobalt(Co−Co)[Co2(CO)6(μ-CO)(μ-C4O2H2)]

✍ Scribed by Riccardo Bianchi; Giuliana Gervasio; Domenica Marabello

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: German
• Weight: 228 KB
• Volume: 84
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/1522-2675(20010321)84:3<722::aid-hlca722>3.0.co;2-0

✦ Synopsis

The orthorhombic crystal structure of [Co 2 (CO) 6 (m-CO)(m-C 4 O 2 H 2 )] ( 1) was determined at 150 K (Fig. 1). Two CÀH ´´´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 CoÀCo bond critical point indicates for the first time the existence of a metalÀmetal 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.