Influence of the nacnac Ligand in Iron(I)-Mediated P4 Transformations.
作者： Fabian Spitzer , Christian Graßl , Gábor Balázs , Eva M. Zolnhofer , Karsten Meyer
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摘要: A study of P4 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 aromatic and backbone substituents the ligand. The products [(LFe)4 (μ4 -η(2) :η(2) -P8 )] (L=L(1) (2 a), (2 b)) containing a P8 core were obtained by reaction 1 a,b in toluene room temperature. Using slightly more sterically encumbered ligand 1 c results formation [(L(3) Fe)2 (μ-η(4) :η(4) -P4 (2 c), possessing cyclo-P4 moiety. Compounds 2 a-c comprehensively characterized their electronic structures investigated SQUID magnetization (57) Fe Mossbauer spectroscopy as well DFT methods.
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