Premium
Dramatic Remote Substitutent Effects on the Electronic Spin State of Bis(scorpionate) Iron(II) Complexes
Author(s) -
Hamon Paul,
Thépot JeanYves,
Le Floch Marie,
Boulon MarieEmmanuelle,
Cador Olivier,
Golhen Stéphane,
Ouahab Lahcène,
Fadel Lotfi,
Saillard JeanYves,
Hamon JeanRené
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200802567
Subject(s) - steric effects , substituent , situated , ligand (biochemistry) , tripod (photography) , chemistry , photochemistry , stereochemistry , computer science , physics , biochemistry , receptor , artificial intelligence , optics
A molecular vise : The purple‐colored bis( tert ‐butylscorpionate) iron(II) complex is fully low‐spin at room temperature, despite the steric hindrance brought about by the six methyl groups in the equatorial belt. The remotely situated bulky t ert‐butyl substituent on boron acts like a locking screw for a vise, forcing the tripod‐shaped ligand to close, thus favoring low‐spin complex formation.