Up to now, most of the compounds found in this project are insulating. However, vanadium in the new sulfide oxide CsV2S2O has a mean formal valence +2.5 and exhibits bad-metal properties along with Pauli-paramagnetic behavior.  The metallic layers in this compound are separated by the highly polarizable Cs+ ion (Figure 4) and it will be interesting to modify by changing the charge carriers concentration in this new material.
The various compounds found so far in this project exhibit anionic ordering and novel coordination types for transition metal ions in different oxidation states. The chemistry of "bichalcogenides", i.e. oxygen together with one heavier chalcogen, is very promising for discovering new solid-state crystalline materials with challenging physical properties.
 M. Valldor, P. Adler, Yu. Prots, U. Burkhardt, L. H. Tjeng, Eur. J. Inorg. Chem. 2014, 36, 6150-6155. http://dx.doi.org/10.1002/ejic.201402805
 S. Huh, Yu. Prots, P. Adler, L. H. Tjeng, M. Valldor, Eur. J. Inorg. Chem. 2015, 2015, 2982-2988. http://dx.doi.org/10.1002/ejic.201500385
 E. J. Hopkins, Yu. Prots, U. Burkhardt, Yves Watier, Z. Hu, C.-Y. Kuo, J.-C. Chiang, T.-W. Pi, A. Tanaka, L. H. Tjeng, M. Valldor, Chem. Eur. J. 2015, 21, 7938-7943. http://dx.doi.org/10.1002/chem.201406511
 M. Valldor, U. Rößler, Yu. Prots, C. Y. Kuo, J.-C. Chiang, Z. Hu, T.-W. Pi, R. Kniep, L. H. Tjeng, Chem. Eur. J. 2015, 21, 10821-10828. http://dx.doi.org/10.1002/chem.201501024
 M. Valldor, P. Merz, Yu. Prots, W. Schnelle, accepted for publication in Eur. J. Inorg. Chem. 2015.