Ionic-liquid-like local structure in $LiN{O}_3-Ca(N{O}_3{)}_2-H_{2}O$ as studied by ion and solvent nuclei NMR relaxation

Abstract

Relaxation rates in the $13mLiN{O}_3-6,5mCa(N{O}_3{)}_2-H_{2}O$ ternary system have been measured for nuclei of water (${}^{1}H$ and ${}^{17}O$), anion (${}^{14}N$), and both cations (${}^{7}Li$, ${}^{43}Ca$). The data analysis reveals the system structure as consisting of two main charged units: [Li(H${}_2$O)${}_4$]${}^{+}$ and [Ca(NO${}_3$)${}_4$]${}^{2-}$. Thus the system presents inorganic ionic liquid like structure.