Reply to Comment on “Distortions in Octahedrally Coordinated d⁰ Transition Metal Oxides: A Continuous Symmetry Measures Approach”

Transition Metal Oxides: A Continuous Symmetry Measures Approach".(i) Prof. Nalbandyan states the division of the d 0 cations has been known for decades.We respectfully disagree.The excellent article by Gopalakrishnan and Bhuvanesh 1 does discuss d 0 cations, along with d 0 -d 1 systems.In the paper, however, specific strengths of the d 0 distortions are not given, nor are any quantifications made.The excellent article by Brown 2 discusses cation coordination and radii for numerous elements and predicts coordination numbers as well as bond distances.Again, however, specific distortion strengths and magnitudes among d 0 MO 6 octahedra were not discussed.In our paper, we should have referenced another paper by Brown and Kunz. 3 We regret this omission.(ii) Prof. Nalbandyan states that we omitted Re 7+ in our compilation.Our paper was written with materials properties in mind, and we felt including Re 7+ , as well as Sc 3+ (another d 0 transition metal), would be irrelevant to the reported study.Also, a search of the ICSD database revealed 54 examples of binary and ternary Re 7+ oxides.Many of these structures are redundant, that is, the same compound, and in most instances the Re 7+ ion is not in an octahedral environment.(iii) Prof. Nalbandyan also questions why we did not include Keggin-type ions in our study.Our article focused on solidstate oxide materialsscompounds that exhibit one-, two-, or