نتريد الپوتاسيوم

نتريد الپوتاسيوم
الأسماء
اسم أيوپاك
Potassium nitride
المُعرِّفات
رقم CAS
3D model (JSmol)
الخصائص
الصيغة الجزيئية K3N
كتلة مولية 131.3016 g/mol
المظهر Slightly yellow crystalline solid
نقطة الانصهار
مركبات ذا علاقة
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.

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References

  1. ^ 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.{{cite journal}}: CS1 maint: unrecognized language (link)
  2. ^ Chemical Society (Great Britain) (1894). Journal - Chemical Society, London. Chemical Society. pp. 512–.