" /> " /> " /> (1974). J. Chem. Soc. Dalton Trans. pp. 2021-2024]. The two (1974). J. Chem. Soc. Dalton Trans. pp. 2021-2024]. The two (1974). J. Chem. Soc. Dalton Trans. pp. 2021-2024]. The two W5O186− ligands, related by a crystallographic twofold axis through W5O186− ligands, related by a crystallographic twofold axis through W5O186− ligands, related by a crystallographic twofold axis through anion to be identified, in contrast to the six found earlier [Iball et al. anion to be identified, in contrast to the six found earlier [Iball et al. anion to be identified, in contrast to the six found earlier [Iball et al. the square antiprismatic CeO8 group, are therefore unprotonated. the square antiprismatic CeO8 group, are therefore unprotonated. the square antiprismatic CeO8 group, are therefore unprotonated.