Abstract
In this review we describe recent advances in transition metal oxyhydride chemistry obtained by topochemical routes, such as low temperature reduction with metal hydrides, or high-pressure solid-state reactions. Besides the crystal chemistry, magnetic and transport properties of the bulk powder and epitaxial thin film samples, the remarkable lability of the hydride anion is particularly highlighted as a new strategy to discover unprecedented mixed anion materials.
![](/cms/asset/39b61dbb-6e2f-4f08-8a3b-0b42f0f9154b/tsta_a_1394776_uf0001_oc.jpg)
Acknowledgements
A significant portion of this work was assisted by the Japan–France Bilateral Joint Research Project from the Japan Society for the Promotion of Science (JSPS), and the Centre National de la Recherche Scientifique, (CNRS), [PRC No. 0684 2013-2014].