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Stacking vs. CH-pi interactions between chelate and aryl rings in crystal structures of square-planar transition metal complexes

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2007
Authors
Sredojevic, Dusan
Bogdanović, Goran A.
Tomic, Zoran D.
Zarić, Snežana
Article (Published version)
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Abstract
The crystal structures of square-planar transition-metal complexes from the Cambridge Structural Database (CSD) with close contacts between planar chelate rings and aryl rings containing six carbon atoms (C-6- aryl) were analyzed. Most of the chelate rings in these structures are fused with aromatic or other pi-delocalized chelate rings. The results show that planar chelate rings can be involved in stacking and CH-pi interactions with organic aryl rings. However, the number of stacking interactions is a few times larger than the number of CH-pi interactions. The analysis also shows that in almost all cases CH-pi interactions are formed only when stacking interactions are prevented by voluminous substituents. Hence, between planar chelate rings and C-6- aryl rings stacking interactions are preferred to CH-pi interactions.
Source:
CrystEngComm, 2007, 9, 9, 793-798
Publisher:
  • Royal Soc Chemistry, Cambridge

DOI: 10.1039/b704302c

ISSN: 1466-8033

WoS: 000249078700022

Scopus: 2-s2.0-34548232165
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URI
http://cherry.chem.bg.ac.rs/handle/123456789/862
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