1987
DOI: 10.1002/cber.19871201206
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Reaktionen von Bis(diazadien)eisen(O)‐Komplexen

Abstract: Bei der Reduktion von Eisen(l1)-Verbindungen mit Alkalimetallen oder iiber eine Alkylierung mit Grignard-Reagenzien in Gegenwart von l ,CDilza-l,3-dienen (DAD) entstehen die paramagnetischen, braunen, vierfach koordinierten Eisen (0) Eisen(N-chelate) haben zusatzlich zu ihrer bekannten biochemischen Funktion dadurch Bedeutung gewonnen, daB sie in homogenkatalytischen Reaktionen fur die Umsetzung einfacher Kohlenwasserstoffe als aktive Zentren auftreten. Schon vor langerer Zeit wurde gcfunden, daB Bis(bipyridy… Show more

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Cited by 39 publications
(10 citation statements)
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“…The C a alkene carbon atoms, sbonded to iron, resonate at 193.3 ppm. This is a normal ppm value for an Fe-C(sp 2 ) [9,11,[72][73][74] carbon atom and comparable with that of 198.0 ppm in 10a. The C b alkene carbon atom is observed at 128.0 ppm, which is within the range generally observed for sp 2 -alkene carbon atoms.…”
Section: Complex 12d and Compound 13supporting
confidence: 75%
“…The C a alkene carbon atoms, sbonded to iron, resonate at 193.3 ppm. This is a normal ppm value for an Fe-C(sp 2 ) [9,11,[72][73][74] carbon atom and comparable with that of 198.0 ppm in 10a. The C b alkene carbon atom is observed at 128.0 ppm, which is within the range generally observed for sp 2 -alkene carbon atoms.…”
Section: Complex 12d and Compound 13supporting
confidence: 75%
“…Single-crystal X-ray diffraction studies confirmed the new species 33 as a ferrate metallacycle, which displays 1,3-regioselectivity (Figure ). 33 thus represents a very rare example of an iron-metallacycle, which is obtained through intermolecular cycloaddition and a first example of a 1,3-substituted iron metallacycle . Moreover, such a regioselectivity for the metallacycle formation is consistent with the regioselectivity of the final 1,3,5-substituted arene ( vide infra) .…”
Section: Resultsmentioning
confidence: 99%
“…Obviously, under such circumstances the 1,4-diaza-1,3-butadiene ligands are “noninnocent” 4a, in more senses than one: they are not only capable of changing their effective charge but also sufficiently reactive to undergo hydrogenation. In the context of catalytic hydride generation, activation, and transfer schemes ,, the latter, irreversible process would be undesired, leading to inactive complexes.…”
Section: Discussionmentioning
confidence: 99%