Sodium nitride (Na3N) and potassium nitride (K3N), while existing, are extremely unstable, being prone to decomposing back into their constituent elements, and cannot be produced by reacting the elements with each other at standard conditions.
sˈoʊdiəm nˈaɪtɹaɪd nˈɑː θɹˈiː ˈɛn ænd pətˈæsiəm nˈaɪtɹaɪd kˈeɪ θɹˈiː ˈɛn, wˌaɪl ɛɡzˈɪstɪŋ, ɑːɹ ɛkstɹˈiːmli ʌnstˈeɪbəl, bˌiːɪŋ pɹˈoʊn tə dˌiːkəmpˈoʊzɪŋ bˈæk ˌɪntʊ ðɛɹ kənstˈɪtʃuːənt ˈɛlɪmənts, ænd kænˈɑːt biː pɹədˈuːst baɪ ɹɪˈæktɪŋ ðɪ ˈɛlɪmənts wɪð ˈiːtʃ ˈʌðɚɹ æt stˈændɚd kəndˈɪʃənz.