Since Librivox is on the front page, here's a 1910 book reading, pretty good quality, of "The Romance of Modern Chemistry" which covers NI3 (Ch 15) and many sim

Since Librivox is on the front page, here's a 1910 book reading, pretty good quality, of "The Romance of Modern Chemistry" which covers NI3 (Ch 15) and many similar topics. Surprising how much chemical knowledge existed then, even without a solid understanding of QM: https://librivox.org/the-romance-of-modern-chemistry-by-james-c-philip/ https://librivox.org/the-romance-of-modern-chemistry-by-jame... An interesting feature is that if you go up the periodic table on the iodine column, the species become less reactive, with nitrogen bromide being explosive but more stable than NI3 and the fluorine derivative, NF3 being stable enough to use in industrial semiconductor applications (etching), and with the benefit of not being a persistent environmental pollutant due to relatively rapid breakdown.