Acta Cryst. (2018). B74, doi:10.1107/S2052520618007242 Supporting information Volume 74 (2018) Supporting information for article: Vanadium clusters formation in geometrically frustrated spinel oxide AlV2O4 Mikhail V. Talanov, Vladimir B. Shirokov, Leon A. Avakyan, Valeriy M. Talanov and Khisa Sh. Borlakov