1 Support information Heterometallic supramolecular architecture based on a trinuclear [Mn(H2O)4(NiL)2] unit: crystal structure and magnetic properties Yang Zou a*, Xiaojun Zhou a, Jingli Xie b*, Yuanyuan Li a a Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, China b Monash Univ, Sch Chem, Clayton, Vic 3800, Australia E-mail: zouyang@zstu.edu.cn; jingli.xie@monash.edu Fig S1 (a) Hydrogen bond (yellow dash line) of the central heteronuclear [Mn(H2O)4(NiL)2] unit with the four adjacent unit. 1