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Cover Picture: Scalar Coupling Across [CH⋅⋅⋅FC] Interactions in (σ‐Aryl)‐Chelating Post‐Metallocenes (Chem. Eur. J. 2/2012)
Author(s) -
So LoiChi,
Liu ChamChuen,
Chan Michael C. W.,
Lo Jerry C. Y.,
Sze KongHung,
Zhu Nianyong
Publication year - 2012
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.201290000
Subject(s) - aryl , intramolecular force , substituent , chemistry , chelation , scalar (mathematics) , stereochemistry , metal , crystallography , chemical shift , cover (algebra) , medicinal chemistry , inorganic chemistry , organic chemistry , mathematics , geometry , alkyl , mechanical engineering , engineering
CH⋅⋅⋅FC interactions and their nature, importance, and applicability is a topical yet contentious issue. As described by M. C. W. Chan, K.‐H. Sze et al. in their Full Paper on page 565 ff. , a series of Group 4 organometallic complexes supported by (σ‐aryl)‐chelating ligands, with a CF 3 or F substituent in the vicinity of the metal, has been designed and characterized by multinuclear NMR experiments, which for the first time verify that the observed 1 H– 19 F coupling contains a scalar component, and therefore occurs with chemical connectivity across intramolecular CH⋅⋅⋅FC contacts for Ti derivatives.