Showing papers by "Edward I. Stiefel published in 1996"
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TL;DR: The crystal structure of the simplest known molybdenum-requiring enzyme, the dimethyl sulfoxide reductase of Rhodobacter sphaeroides, is reported on and Stiefel discusses the chemistry performed by this enzyme and how it contributes to “the smell of the sea.”
Abstract: The crystal structure of the simplest known molybdenum-requiring enzyme, the dimethyl sulfoxide reductase of Rhodobacter sphaeroides , is reported on in this issue of Science by Schindelin et al . ([p. 1615][1]). In his Perspective, Stiefel discusses the chemistry performed by this enzyme and how it contributes to “the smell of the sea.”
[1]: /lookup/doi/10.1126/science.272.5268.1615
76 citations
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13 Dec 1996TL;DR: In this article, the authors describe lube oil compositions containing a major amount of lube and a minor amount of at least one compound containing a heterometallic tetranuclear preferably cubane, more preferably thiocubane core having 1 to 3 molybdenum atoms and the remainder Co, Cr, Cu, Ni, W, Mn, and Fe.
Abstract: The invention relates to lube oil compositions containing a major amount of a lube oil and a minor amount of at least one compound containing a heterometallic tetranuclear preferably cubane, more preferably thiocubane core having 1 to 3 molybdenum atoms and the remainder Co, Cr, Cu, Ni, W, Mn, and Fe. Preferred is Cu. Thiocubane cores are also preferred and these typically have the formula M4-y Moy S4 Ln Qz, wherein y is 1 to 3, n is 2 to 6 and z is 0 to 4. Additive concentrates of the compounds as well as the method of making the compositions are disclosed.
31 citations
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13 Dec 1996TL;DR: In this paper, a method for enhancing and restoring the friction reduction effectiveness of a lubricating oil comprising adding to the lube a trinuclear molybdenum sulfur compound selected from the group of trinnuclear molybinear compounds was proposed.
Abstract: The invention is a method for enhancing and restoring the friction reduction effectiveness of a lubricating oil comprising adding to the lubricating oil a trinuclear molybdenum sulfur compound selected from the group of trinuclear molybdenum compounds preferably those having the formulas Mo3 S7 (dtc)4 and Mo3 S4 (dtc)4 and mixtures thereof wherein dtc represents independently selected diorganodithiocarbamate ligands containing independently selected organo groups and wherein the ligands have a sufficient number of carbon atoms among all the organo groups of the compound's ligands are present to render the compound soluble or dispersible in the lubricating oil. The oil may be a fresh or used oil. Concentrates of the composition are also included in the invention.
21 citations
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TL;DR: In this paper, the synthesis of dinuclear Mo(V) complexes containing the Mo2S42+ core was reported, where the disulfido bridge was replaced by a bis-sulfido bridging.
12 citations
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TL;DR: The field of bioinorganic chemistry and the large subfield of metallobiochemistry are burgeoning and the great breadth of this field is becoming apparent, at least in outline form.
2 citations