  NOx are major air pollutants, having negative impact on environment and
consequently, human health. We propose here the single-electron reduction of
NOx (x = 1, 2) using superalkalis. We study the interaction of NOx with FLi2,
OLi3 and NLi4 superalkalis using density functional calculations, which lead to
stable superalkali-NOx ionic complexes with negatively charged NOx. This
clearly reveals that the NOx can successfully be reduced to NOx- anion due to
electron transfer from superalkalis. It has been also noticed that the size of
superalkalis plays a crucial in the single-electron reduction of NOx.
