Synonyms:Tungsten;Wolfram
99% *data from raw suppliers
Tungsten powder, 12 μm, 99.9% trace metals basis *data from reagent suppliers
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There total 245 articles about Tungsten which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:
Reference yield: 100.0%
Reference yield: 84.0%
Reference yield: 82.9%
The research investigates the coordination chemistry of low-valent rhenium and tungsten porphyrin complexes, aiming to synthesize and characterize a family of metalloporphyrin dimers with metal-metal multiple bonds. Key chemicals used include tungsten and rhenium porphyrin complexes such as WIV(Por)(Cl)2, W11(Por)(H5C6~CC6H5), and Re"(Por)(PEt3)2, which serve as precursors to the desired dimers through reduction and pyrolysis reactions. The study employs various reagents like Si2Cl6, LiAlH4, and Al(Hg) for reduction processes, and utilizes techniques such as NMR spectroscopy, UV-visible spectroscopy, and FAB mass spectrometry for characterization. The researchers successfully synthesized several metalloporphyrin dimers, including [Re"(OEP)]2 and [W11(OEP)]2, and explored their oxidation states and magnetic properties. They concluded that the formation of strong metal-metal bonds between metalloporphyrins is a general phenomenon for 4d and 5d transition metals, and that the oxidations of these dimers occur at the metal-metal bond rather than the porphyrin ligand. The study provides insights into the structural, spectroscopic, and chemical properties of these complexes, offering opportunities for further investigation into their dynamic behavior and potential applications.
The study focuses on the Negishi Cross-Coupling Reaction as an efficient method for synthesizing functionalized amino and alkoxy carbene complexes of chromium, molybdenum, and tungsten. The researchers utilized a variety of chemicals, including metalated aminocarbenes, palladium catalysts, organozinc reagents, and halide compounds. These chemicals served the purpose of facilitating the cross-coupling reactions, which allowed the creation of new amino and alkoxy carbene complexes with functional groups such as aldehyde, ketone, nitrile, and ester. The study provides a route to access these complexes, which are valuable in the synthesis of complex organic molecules and are not easily accessible through other methods.
The study focuses on the synthesis and characterization of a series of tungsten complexes with terminal chalcogenido ligands (E = S, Se, Te). The researchers synthesized the complexes trans-W(PMe3)4(E)2 by reacting W(PMe3)4(q2-CH2PMe2)H with H2E (E = S, Se) and elemental Te. These complexes are notable for their unique bonding characteristics, with W(PMe3)4(Te)2 being the first reported transition-metal complex containing a terminal tellurido ligand. The study explores the reversible reactions of these complexes with aldehydes (RCHO) to form q2-aldehyde derivatives and investigates the displacement of PMe3 ligands by Bu'NC, leading to different products depending on the chalcogen. For instance, the tellurido complex undergoes an unprecedented coupling of the terminal tellurido ligands when reacting with Bu'NC, forming a q2-ditellurido derivative. The study also includes detailed structural analysis using X-ray diffraction and NMR spectroscopy, revealing insights into the bonding and electronic properties of these complexes. The findings contribute to the understanding of multiple bonding in transition-metal complexes with heavier chalcogens and highlight the differences in reactivity and structure across the series.
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