Premium
Influence of the nacnac Ligand in Iron(I)‐Mediated P 4 Transformations
Author(s) -
Spitzer Fabian,
Graßl Christian,
Balázs Gábor,
Zolnhofer Eva M.,
Meyer Karsten,
Scheer Manfred
Publication year - 2016
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.201510716
Subject(s) - toluene , chemistry , steric effects , ligand (biochemistry) , moiety , mössbauer spectroscopy , stereochemistry , medicinal chemistry , crystallography , nuclear magnetic resonance spectroscopy , receptor , organic chemistry , biochemistry
A study of P 4 transformations at low‐valent iron is presented using β‐diketiminato (L) Fe I complexes [LFe(tol)] (tol=toluene; L=L 1 ( 1 a ), L 2 ( 1 b ), L 3 ( 1 c )) with different combinations of aromatic and backbone substituents at the ligand. The products [(LFe) 4 (μ 4 ‐η 2 :η 2 :η 2 :η 2 ‐P 8 )] (L=L 1 ( 2 a ), L 2 ( 2 b )) containing a P 8 core were obtained by the reaction of 1 a,b with P 4 in toluene at room temperature. Using a slightly more sterically encumbered ligand in 1 c results in the formation of [(L 3 Fe) 2 (μ‐η 4 :η 4 ‐P 4 )] ( 2 c ), possessing a cyclo‐P 4 moiety. Compounds 2 a – c were comprehensively characterized and their electronic structures investigated by SQUID magnetization and 57 Fe Mössbauer spectroscopy as well as by DFT methods.