# title
Isolation of Reduced Zirconium Chloride Clusters [(Zr6 CCl12 )Cl6 ]4- and [(Zr6 BCl12 )Cl6 ]5- from Acidic Aqueous Solution.

# abstract
Crystallizable from concentrated hydrochloric acid: Compounds containing [(Zr6 BCl12 )Cl6 ]5- and [(Zr6 CCl12 )Cl6 ]4- clusters survive dissolution in deoxygenated water, and this enabled the study of reduced zirconium compounds in aqueous solution for the first time. In the solid state, the clusters are surrounded by novel hydrogen-bonded water networks that interact with the terminal chloride ligands (see graphic; black circles: Zr, smaller circle: B, gray circles: Cl, open circles: O of H2 O).