Keywords: Bis(12-crown-4)lithium-cation-from-xtal-3D-balls-A.png Ball-and-stick model of the bis 12-crown-4 lithium cation Li C<sub>8</sub>H<sub>16</sub>O<sub>4</sub> <sub>2</sub><sup>+</sup> as found in the crystal structure X-ray crystallographic data from http //dx doi org/10 1107/S1600536806051142 Acta Cryst 2007 E63 m41-m42 Model constructed in http //www crystalmaker com/ CrystalMaker 8 1 Image generated in http //accelrys com/products/discovery-studio/visualization/discovery-studio-visualizer html Accelrys DS Visualizer Own 2009-03-15 Ben Mills Benjah-bmm27 Images by Ben Mills Ball-and-stick models 12-crown-4 Lithium complexes Crown ether complexes Complex cations |