Transmetalation of Aqueous Inorganic Clusters: A Useful Route to the Synthesis of Heterometallic Aluminum and Indium HydroxoAquo Clusters

[Al<sub><i>x</i></sub>In<sub><i>y</i></sub>(μ<sub>3</sub>-OH)<sub>6</sub>(μ-OH)<sub>18</sub>(H<sub>2</sub>O)<sub>24</sub>]­(NO<sub>3</sub>)<sub>15</sub> hydroxy–aquo clusters (<b>Al<sub><i>x</i></sub>In<sub>13–<i>x</i></sub></b>) are synthesized through the evaporation of stoichiometrically varied solutions of <b>Al<sub>13</sub></b> and In­(NO<sub>3</sub>)<sub>3</sub> using a transmetalation reaction. Several spectroscopic techniques (<sup>1</sup>H NMR, <sup>1</sup>H-diffusion ordered spectroscopy, dynamic light scattering, and Raman) are used to compare <b>Al<sub><i>x</i></sub>In<sub>13–<i>x</i></sub></b> to its <b>Al<sub>13</sub></b> counterpart. A thin film of aluminum indium oxide was prepared from an <b>Al<sub>7</sub>In<sub>6</sub></b> cluster ink, showing its utility as a precursor for materials.