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Ammonium tetrathiomolybdate
About: Ammonium tetrathiomolybdate is a research topic. Over the lifetime, 187 publications have been published within this topic receiving 4249 citations.
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28 Jun 1979TL;DR: Antioxidant additives for lubricating oil are prepared by combining ammonium tetrathiomolybdate and a basic nitrogen compound complex to form a sulfur-and molybdenum-containing composition as discussed by the authors.
Abstract: Antioxidant additives for lubricating oil are prepared by combining ammonium tetrathiomolybdate and a basic nitrogen compound complex to form a sulfur-and molybdenum-containing composition.
79 citations
TL;DR: It is evident that the site of its action as an antagonist influencing either the absorption or the subsequent metabolic fate of Cu depends upon the ratio Cu/MoS4(2-) in the diet.
79 citations
TL;DR: In this article, an investigation has been carried out into the possibility of in situ formation of molybdenum trisulphide (MoS2) within porous anodic films on aluminium, to improve subsequent tribological behavior, by re-anodizing in thiomolybdate electrolyte.
Abstract: An investigation has been carried out into the possibility of in situ formation of MoS2 within porous anodic films on aluminium, to improve subsequent tribological behaviour, by re-anodizing in thiomolybdate electrolyte. Acidification of thiomolybdate was employed to simulate the conditions for formation of the sulphide at the anodic film/electrolyte interface, followed by appropriate vacuum heat treatments to study possible temperature effects on the sulphide due to either friction or Joule heating during anodizing. The products of both acidification and heat treatment, characterized by X-ray powder diffraction and scanning electron microscopy, were compared with those formed by direct thermal decomposition of ammonium tetrathiomolybdate crystals. The precipitate formed by acidification was mainly amorphous molybdenum trisulphide (MoS3), which on heat treatment at 450 and 850°C yielded 3R-MoS2. 3R-MoS2 also formed by the thermal decomposition of thiomolybdate crystals. Thermogravimetric and differential thermal analyses showed that the decomposition of MoS3 to MoS2 occurred in the range 220–370°C and revealed the sequence of reaction steps. The findings suggest that mainly amorphous MoS3 is formed as a consequence of changes in the pH of the film/electrolyte interface during re-anodizing but the product is relatively easily transformed to crystalline MoS2 on moderate heating which may occur during wear processes.
78 citations
TL;DR: The combination of the thiomolybdate assay with the recently developed Cd-Chelex assay makes it possible to determine the portion of MT which binds Cu (Cu load of MT), provided that the amount of non-Cu-thionein exceeds 100 ng, the detection limit of the Cd, Chelex assay.
68 citations
TL;DR: It is demonstrated that idiosyncratic interactions can occur between metal ions and chelating agents and further investigations are needed before chelater agents can be examined for their protective properties in various neurodegenerative diseases.
66 citations