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Niterra established its first European subsidiary, NGK SPARK PLUG (U.K.) Ltd. in 1975. In 1979, its second European subsidiary, NGK SPARK PLUG DEUTSCHLAND GmbH, was founded in Germany. [6] Ten years later, it was renamed NGK SPARK PLUG EUROPE GmbH when it took charge of operations in Europe. In 2017, its remit further expanded across the EMEA ...
A highly reactive yellow low melting solid, it has a tetrameric structure, Ir 4 F 20, which contains octahedrally coordinated iridium atoms. [1] This structure is shared with RuF 5 and OsF 5. It can be prepared by the controlled decomposition of IrF 6 [1] or the reduction of IrF 6 with silicon powder or H 2 in anhydrous HF. [2] [3] 2IrF 6 + H 2 ...
Iridium compounds are compounds containing the element iridium (Ir). Iridium forms compounds in oxidation states between −3 and +9, but the most common oxidation states are +1, +2, +3, and +4. [2] Well-characterized compounds containing iridium in the +6 oxidation state include IrF 6 and the oxides Sr 2 MgIrO 6 and Sr 2 CaIrO 6.
Iridium hexafluoride is a yellow crystalline solid that melts at 44 °C and boils at 53.6 °C. [1] The solid structure measured at −140 °C is orthorhombic space group Pnma. Lattice parameters are a = 9.411 Å, b = 8.547 Å, and c = 4.952 Å.
NGK is headquartered in Tokyo (Marunouchi Bldg. 25F, 2-4-1, Marunouchi, Chiyoda-ku, Tokyo 100–6325) and is listed on the Nikkei 225, which is an index of the Tokyo Stock Exchange. [2] It is also listed in the Osaka Securities Exchange , the Nagoya Stock Exchange , and the Sapporo Securities Exchange all under listing code 5333.
Iridium-192 (symbol 192 Ir) is a radioactive isotope of iridium, with a half-life of 73.827 days. [1] It decays by emitting beta (β) particles and gamma (γ) radiation. About 96% of 192 Ir decays occur via emission of β and γ radiation, leading to 192 Pt. Some of the β particles are captured by other 192 Ir nuclei, which are then converted ...
Tris(2-phenylpyridine)iridium, abbreviated [Ir(ppy) 3] is the organoiridium complex with the formula Ir(C 6 H 4-C 5 H 4 N) 3. The complex, a yellow-green solid, is a derivative of Ir 3+ bound to three monoanionic 2-pyridinylphenyl ligands. It is electroluminescent, emitting green light. The complex is observed with the facial stereochemistry ...
Iridium compounds are used as catalysts in the Cativa process for carbonylation of methanol to produce acetic acid. [92] [93] Iridium complexes are often active for asymmetric hydrogenation both by traditional hydrogenation. [94] and transfer hydrogenation. [95] This property is the basis of the industrial route to the chiral herbicide (S ...
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