18-Crown-6 Coordinated Metal Halides with Bright Luminescence and Nonlinear Optical Effects.

The crown-ether coordination compounds Zn(18-crown-6), Eu(18-crown-6) (: Cl, Br, I), MnI(18-crown-6), MnCl(18-crown-6), MnI(18-crown-6), and MnI(18-crown-6) are obtained by ionic-liquid-based synthesis. Whereas (18-crown-6) (: Zn, Eu) show conventional structural motives, MnCl(18-crown-6), MnI(18-crown-6), and MnI(18-crown-6) exhibit unusual single Mn tetrahedra coordinated to the crown-ether complex. Surprisingly, some compounds show outstanding photoluminescence.

Symmetry reduction due to gallium substitution in the garnet Li6.43(2)Ga0.52(3)La2.67(4)Zr2O12.

Single-crystal structure refinements on lithium lanthanum zirconate (LLZO; Li7La3Zr2O12) substituted with gallium were successfully carried out in the cubic symmetry space group I [Formula: see text]3d. Gallium was found on two lithium sites as well as on the lanthanum position. Due to the structural distortion of the resulting Li6.