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Cover Picture: The Ligand‐Based Quintuple Bond‐Shortening Concept and Some of Its Limitations (Chem. Eur. J. 30/2013)
Author(s) -
Noor Awal,
Bauer Tobias,
Todorova Tanya K.,
Weber Birgit,
Gagliardi Laura,
Kempe Rhett
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201390109
Subject(s) - ligand (biochemistry) , chemistry , metal , bond , crystallography , cover (algebra) , bond length , computational chemistry , organic chemistry , crystal structure , economics , engineering , biochemistry , receptor , mechanical engineering , finance
Quintuple bonds between chromium atoms are the first choice for looking at how short a metal–metal bond can be. In their Full Paper on page 9825 ff., L. Gagliardi, R. Kempe et al. describe a rational concept of shortening quintuple bonds based on ligand design. A Cr–Cr distance of 1.7056(12) Å is the value finally reached. Most importantly, the potential limitations of the shortening concept and the formation of other coordination isomers or over‐reduction are described.