“…Although their study was neglected for many years, recent work has revealed an extensive coordination chemistry of early transition metal fluorides, including TiF 4 , ZrF 4 , HfF 4 , NbF 5 , TaF 5 and WF 6 [1]. In marked contrast, the coordination chemistry of lanthanide fluorides is limited to a range of fluorometallate anions, and a few, usually poorly characterised hydrates [1,2].…”