NIOBIUMCHLORIDE
- русский язык имя
- английское имяNIOBIUMCHLORIDE
- CAS №13569-70-5
- CBNumberCB91419626
- ФормулаCl4Nb
- мольный вес234.72
- файл Mol13569-70-5.mol
химическое свойство
| Температура плавления | decomposes at 800℃ [CRC10] |
| Температура кипения | 456.21°C (estimate) |
| плотность | 3.200 |
| растворимость | reacts with H2O |
| форма | violet-black monoclinic crystals |
| цвет | violet-black monoclinic crystals, crystalline |
| Растворимость в воде | reac H2O [CRC10] |
| Система регистрации веществ EPA | Niobium chloride (NbCl4) (13569-70-5) |
NIOBIUMCHLORIDE химические свойства, назначение, производство
Химические свойства
Brown-black crystal needles; pure brown in transmitted light.Decomposes on exposure to air and moisture (color change first to black, then to white). Dissolves in a small amount of H2O and in dilute hydrochloric acid, giving a dark-blue solution.
Использование
NIOBIUMCHLORIDE is used as reductively couples imines and nitriles.Подготовка
Reduction of NbCl5 with H2 at 2 atm. (generated when the tube is filled at STP, sealed and then heated). The reaction does not go to completion and NbCl5 and NbCl4 must be separated by sublimation.Методы очистки
NIOBIUMCHLORIDE is Purified by filter and wash with THF and dry under vacuum.Меры предосторожности
Niobiumchloride is corrosive; moisture sensitive. Use in a fume hood.NIOBIUMCHLORIDE запасные части и сырье
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