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An Interacting Quantum Atoms analysis of the Metal-Metal Bond in [M2(CO)8]n Systems

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2015
Author Tiana Davide, Francisco Evelio, Macchi Piero, Sironi Angelo, Martin Pendas Angel,
Project Properties of metal-organic materials from accurate electron density determination
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Original article (peer-reviewed)

Journal Journal of Physical Chemistry A
Volume (Issue) 119
Page(s) 2153 - 2160
Title of proceedings Journal of Physical Chemistry A
DOI 10.1021/acs.jpca.5b00070

Open Access

Type of Open Access Repository (Green Open Access)


The metal−metal interaction in policarbonyl metal clusters remains one of the most challenging and controversial issues in metal−organic chemistry, being at heart of a generalized understanding of chemical bonding and of specific applications of these molecules. In this work, the interacting quantum atoms (IQA) approach is used to study the metal−metal interaction in dimetal polycarbonyl dimers, analyzing bridged (Co2(CO)8)), semibridged ([FeCo(CO)8]−) and unbridged (Co2(CO)8, [Fe2(CO)8]2−) clusters. In all systems, a delocalized covalent bond is found to occur, involving the metals and the carbonyls, but the global stability of the dimers mainly originates from the Coulombic attraction between the metals and the oxygens.