Influence of the nacnac Ligand in Iron(I)‐Mediated P4 Transformations
F Spitzer, C Graßl, G Balázs… - Angewandte Chemie …, 2016 - Wiley Online Library
F Spitzer, C Graßl, G Balázs, EM Zolnhofer, K Meyer, M Scheer
Angewandte Chemie International Edition, 2016•Wiley Online LibraryA study of P4 transformations at low‐valent iron is presented using β‐diketiminato (L) FeI
complexes [LFe (tol)](tol= toluene; L= L1 (1 a), L2 (1 b), L3 (1 c)) with different combinations
of aromatic and backbone substituents at the ligand. The products [(LFe) 4 (μ4‐η2: η2: η2:
η2‐P8)](L= L1 (2 a), L2 (2 b)) containing a P8 core were obtained by the reaction of 1 a, b
with P4 in toluene at room temperature. Using a slightly more sterically encumbered ligand
in 1 c results in the formation of [(L3Fe) 2 (μ‐η4: η4‐P4)](2 c), possessing a cyclo‐P4 moiety …
complexes [LFe (tol)](tol= toluene; L= L1 (1 a), L2 (1 b), L3 (1 c)) with different combinations
of aromatic and backbone substituents at the ligand. The products [(LFe) 4 (μ4‐η2: η2: η2:
η2‐P8)](L= L1 (2 a), L2 (2 b)) containing a P8 core were obtained by the reaction of 1 a, b
with P4 in toluene at room temperature. Using a slightly more sterically encumbered ligand
in 1 c results in the formation of [(L3Fe) 2 (μ‐η4: η4‐P4)](2 c), possessing a cyclo‐P4 moiety …
Abstract
A study of P4 transformations at low‐valent iron is presented using β‐diketiminato (L) FeI complexes [LFe(tol)] (tol=toluene; L=L1 (1 a), L2 (1 b), L3 (1 c)) with different combinations of aromatic and backbone substituents at the ligand. The products [(LFe)4(μ4‐η2:η2:η2:η2‐P8)] (L=L1 (2 a), L2 (2 b)) containing a P8 core were obtained by the reaction of 1 a,b with P4 in toluene at room temperature. Using a slightly more sterically encumbered ligand in 1 c results in the formation of [(L3Fe)2(μ‐η4:η4‐P4)] (2 c), possessing a cyclo‐P4 moiety. Compounds 2 a–c were comprehensively characterized and their electronic structures investigated by SQUID magnetization and 57Fe Mössbauer spectroscopy as well as by DFT methods.
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