A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is
Source of material: Synthesis was carried out from a mixture of Ba (Aldrich 99%), Al (Aldrich 99.99%), Na (Aldrich 99%) and NaN3 (Aldrich 99%) sealed in a clean Nb (Noble Met 99%) tube. Ratio Na:N:Ba:Al was 7:7:2:1. The mixture was heated to 1023 Κ and then cooled to room temperature over 8 days. Some red transparent crystals of Ba9[NbN4]2N(N3) were isolated by washing away the Na with anhydrous liquid ammonia. They were characterised by energy dispersive analysis of X-rays (Ba:Nb = 4:1) and bydoi:10.1524/ncrs.19126.96.36.1999 fatcat:ffjtzot5onfrjgo37l5mj34b2e