Synthesis and Characterization of (H7C5N2)6(V10O28)·2H2O with Edge-Sharing VO6 Octahedra Exhibiting Large Birefringence | Inorganic Chemistry pubs.acs.org/doi/10.1021/... Zhang, Gong, and co-workers @InorgChem #valadium #pyridinium #V10O28_6_ #birefringence