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Aqueous Bismuth Titanium–Oxo Sulfate Cluster Speciation and Crystallization
Author(s) -
Molina Pedro I.,
Kozma Karoly,
Santala Melissa,
Falaise Clément,
Nyman May
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201709539
Subject(s) - aqueous solution , crystallization , bismuth , inorganic chemistry , cluster (spacecraft) , sulfate , small angle x ray scattering , oxide , metal , materials science , crystallography , titanium , dynamic light scattering , chemistry , scattering , nanotechnology , nanoparticle , metallurgy , organic chemistry , physics , computer science , optics , programming language
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.[Ti 22 Bi 7 O 41 (OH)(OH 2 ) 30 (SO 4 ) 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.