نتريد الپوتاسيوم
(تم التحويل من Potassium nitride)
الأسماء | |
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اسم أيوپاك
Potassium nitride
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المُعرِّفات | |
رقم CAS | |
3D model (JSmol)
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CompTox Dashboard (EPA)
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الخصائص | |
الصيغة الجزيئية | K3N |
كتلة مولية | 131.3016 g/mol |
المظهر | Slightly yellow crystalline solid |
نقطة الانصهار | |
مركبات ذا علاقة | |
كاتيونات أخرى
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Lithium nitride Sodium nitride |
ما لم يُذكر غير ذلك، البيانات المعطاة للمواد في حالاتهم العيارية (عند 25 °س [77 °ف]، 100 kPa). | |
مراجع الجدول | |
Potassium nitride is an unstable chemical compound. Several syntheses were erroneously claimed in the 19th century, and by 1894 it was assumed that it did not exist.[2]
However, a synthesis of this compound was claimed in 2004. It is observed to have the anti-TiI 3 structure below 233 K (−40 °C; −40 °F), although a Li 3P-type structure should be more stable. Above this temperature, it converts to an orthorhombic phase. This compound was produced by the reaction of potassium metal and liquid nitrogen at 77 K (−196.2 °C; −321.1 °F) under vacuum:[1]
- 6K + N2 → 2K3N
This compound decomposes back into potassium and nitrogen at room temperature.
This compound is unstable due to steric hindrance.
References
- ^ أ ب Fischer, D.; Cancarevic, Z.; Schön, J. C.; Jansen, M. (January 2004). "Zur Synthese und Struktur von K3N". Zeitschrift für anorganische und allgemeine Chemie (in German). 630 (1): 156–160. doi:10.1002/zaac.200300280.
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: CS1 maint: unrecognized language (link) - ^ Chemical Society (Great Britain) (1894). Journal - Chemical Society, London. Chemical Society. pp. 512–.
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