Global ETD Search
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Showing 1 to 6 of 6 for “"Dithiolates"”.
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Mixed-valence bimetallic dithiolates of iron, cobalt, and nickel and their relevance to the hydrogenases
… mixed-valent di- and tri-nickel cyclopentadienyl dithiolates. The reaction between nickelocene and monothiols has long been known to yield dimers of the form [CpNi(SR)]2 with loss of CpH. The reaction of nickelocene with dithiols is investigated in chapter 4 and is found to be quite complex: …
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Hydrogen production from model complexes of the [FeFe]- and [NiFe]-hydrogenase active sites
… However, unique compared to all other diiron dithiolates, the active-site structure of [FeFe]-hydrogenase features a rotated diiron dithiolate core, exposing a vacant terminal position. Carbon monoxide binds to this terminal position and inhibits catalysis. Thus, the mechanism of hydrogen …
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The Mechanisms of Sulfur-Containing Metal Complexes as Uv-Stabilisers
… be the initial oxidative products of the metal dithiolates and these were also investigated. The main mechanism of their antioxidant action involves the decomposition of hydroperoxides through their oxidation products, by a catalytic ionic process. Their efficiency depends very much on the …
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Synthetic models of [FeFe]-hydrogenase: case studies utilizing azadithiolate and nitrosyl coligands
… features associated with mixed valence diiron dithiolates can be replicated in the absence of mixed-valency by introducing electronic asymmetry. Chapter Five explores the reactivity of the tetracarbonyl complexes Fe2(S2C3H6)(CO)4(PMe3)2 and Fe2(S2C3H6)(CO)4(dppv) towards the electrophiles. …
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Small molecule mimics of hydrogenase enzymes: synthesis, protonation, and electrocatalysis
… that hydrogen evolution by biomimetic diiron dithiolates is accelerated by the amine cofactor, to which the hydride ligand must be adjacent, and inclusion of features found in the enzyme results in fast and efficient catalysis. Unlike models for [FeFe]-hydrogenase, hydride containing models of …
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ΥΔΡΟΛΥΤΙΚΕΣ, ΟΞΕΙΔΟΑΝΑΓΩΓΙΚΕΣ ΚΑΙ ΦΩΤΟΧΗΜΙΚΕΣ ΑΝΤΙΔΡΑΣΕΙΣ ΤΟΥ ΣΥΜΠΛΟΚΟΥ ΔΙΣ-[1-(4-ΜΕΘΟΞΥΦΑΙΝΥΛΟ)-2-ΦΑΙΝΥΛΟ-1,2- ΑΙΘΥΛΕΝΟΔΙΘΕΙΟΛΕΝΙΚΟΥ-S,S'] ΝΙΚΕΛΙΟΥ
A NEW DITHIOLENE COMPLEX, NI[S2C2(C6H5)(C6H4-OCH3-4)]2 (OR C) AND ITS MONOANION(C-) WERE SYNTHESIZED AND CHARACTERISED BY PHYSICOCHEMICAL METHODS. IN ACETONESOLUTIONS BOTH COMPLEXES ARE STABLE IN THE ABSENCE OF OXYGEN. BOTH COMPLEXES ARE HYDROLYSED SLOWLY IN ACETONE-WATER (80/20). THE CYCLIC …