منابع مشابه
Salute to samarium.
Many years ago while studying for a degree in mineralogy, I was privileged to visit the Russian Ilmen Mountains, host to two minerals from which several rare-earth elements were discovered — monazite ((Ce, La, Nd, Th)PO4), and another mineral that was first described in 1839 by the German mineralogist Gustav Rose. He found uranium and tantalum in its composition and thus proposed the name urano...
متن کاملNew samarium diiodide-induced cyclizations*
Samarium diiodide (SmI2) smoothly promotes the cyclizations of suitably substituted carbonyl compounds with styrene subunits leading to benzannulated cyclooctenes. The intramolecular samarium ketyl addition to arene or hetarene moieties enables a new, efficient, and highly stereoselective entry to dearomatized products such as hexahydronaphthalenes, steroid-like tetraor pentacyclic compounds, o...
متن کاملBiological properties, therapeutic and diagnostic applications of Samarium and Samarium nanoparticles
Lanthanides are a family of elements, commonly known as rare earth elements. Metal samarium as one of the most important member of this family, which plays very important roles in the diagnosis and treatment of various diseases, especially cancer. Several lanthanide complexes, samarium in particular, have shown anticancer effects on tumor cells. This paper is tried to review the biological prop...
متن کاملLithium samarium polyphosphate, LiSm(PO3)4
The mixed-metal rare-earth polyphosphate LiSm(PO(3))(4) consists of a three-dimensional framework in which zigzag [(PO(3))(n)](n-) chains with a periodicity of four PO(4) tetrahedra are connected through Li(+) and Sm(3+) ions (both with 2. symmetry).
متن کاملSamarium Monosulfide (SmS): Reviewing Properties and Applications
In this review, we give an overview of the properties and applications of samarium monosulfide, SmS, which has gained considerable interest as a switchable material. It shows a pressure-induced phase transition from the semiconducting to the metallic state by polishing, and it switches back to the semiconducting state by heating. The material also shows a magnetic transition, from the paramagne...
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ژورنال
عنوان ژورنال: Nature Chemistry
سال: 2008
ISSN: 1755-4330,1755-4349
DOI: 10.1038/nchem.19