TitleAqueous Bismuth Titanium-Oxo Sulfate Cluster Speciation and Crystallization
Publication TypeJournal Article
Year of Publication2017
AuthorsMolina PI, Kozma K, Santala M, Falaise C, Nyman M
JournalAngewandte Chemie
Volume56
Issue51
Start Page16277
Pagination16281
Date PublishedDecember 2017
Abstract

Inorganic aqueous metal–oxo clusters are both functional “molecular metal oxides” and intermediates to understand metal oxide growth from water. There has been a recent surge in discovery of aqueous Ti-oxo clusters but without extensive solution characterization. We use small-angle and total X-ray scattering, dynamic light scattering, transmission electron microscopy, and a single-crystal X-ray structure to show that heterometals such as bismuth stabilize labile Ti–oxo sulfate clusters in aqueous solution.[Ti22Bi7O41(OH)(OH2)30(SO4)12]2+ features edge-sharing between the Ti and Bi polyhedra, in contrast to the dominant corner-linking of Ti-oxo clusters. Bi stabilizes the Ti-polyhedra, which are synergistically stabilized by the bidentate sulfates. Gained stability and potential functionality from heterometals is an incentive to develop more broadly the landscape of heterometallic Ti–oxo clusters.

URLhttp://onlinelibrary.wiley.com/doi/10.1002/anie.201709539/abstract