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Tetraselenium tetranitride
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<p>Tetraselenium tetranitride is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula Se4N4. Like the analogous <a href="/facts/Tetrasulfur_tetranitride/1ojDg4Yj">tetrasulfur tetranitride</a> S4N4, Se4N4 is an orange solid. It is however less soluble and more shock-sensitive than S4N4. </p><p>As determined by <a href="/facts/X-ray_crystallography/WtI0F5DN">X-ray crystallography</a>, Se4N4 adopts a cage structure similar to that of S4N4. The Se−Se and Se−N distances are 2.740 and 1.800 <a href="/facts/Angstrom/T5mjdd97">Å</a>, respectively. The N−Se−N angles are 90°. </p><p>Among its many reactions, Se4N4 reacts with <a href="/facts/Aluminium_chloride/xrhvSxDr">aluminium chloride</a> to form adducts of Se2N2. </p>