The chloridoaluminates [BMIm][Sn(AlCl4)3], [BMPyr][Sn(AlCl4)3], and [BMIm][Pb(AlCl4)3] exhibit infinite 1∞[M(AlCl4)3]n– chains (M: Sn, Pb) with the tin compounds showing efficient emission quantum yields up to 76%.

Fused yttrium-alumoborate glasses doped with ytterbium, silicon, chromium, and sodium were synthesized. The influence of the matrix on "spectroscopic behavior" chromium ions efficiency their sensitization Yb3+ luminescence was established by spectral-luminescence EPR-studies. It found that (1) in alkali-free is mainly oxidation degree Cr(III) an appreciable admixture Cr(IV) Cr(V), (2) partial r...

The Na superionic conductor (NASICON) Na3V2(PO4)3 is an important positive electrode material for Na-ion batteries. Here, we investigate the mechanisms of phase transition in NaxV2(PO4)3 (1 ? x 4) upon nonequilibrium battery cycling. Unlike widely believed two-phase reaction a Na3V2(PO4)3–Na1V2(PO4)3 system, determine, first time, structure recently reported intermediate Na2V2(PO4)3 using opera...