[Cr(dmbipy)(ox)2]−: a new bis-oxalato building block for metal assembling. Crystal structures and magnetic properties of XPh4[Cr(dmbipy)(ox)2]·5H2O (X = P and As), Ba(H2O)2[Cr(dmbipy)(ox)2]2n·17/2nH2O and Ag(H2O)[Cr(dmbipy)(ox)2]n·3nH2O | Publicación