Ionic-liquid-like local structure in $LiNO_3-Ca(NO_3)_2-H_2O$ as studied by ion and solvent nuclei NMR relaxation

摘要

Relaxation rates in the $13mLiNO_3-6,5mCa(NO_3)_2-H_2O$ ternary system havebeen measured for nuclei of water ($^1H$ and $^{17}O$), anion ($^{14}N$), andboth cations ($^7Li$, $^{43}Ca$). The data analysis reveals the systemstructure 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 likestructure.