Jilin Normal University, Siping, Jilin 136000, China;
Jilin Normal University, Siping, Jilin 136000, China;
Department of Chemistry, Tonghua Teachers College, Tonghua, Jilin 134002, China;
Jilin Normal University, Siping, Jilin 136000, China;
Jilin Normal University, Siping, Jilin 136000, China;
Northeast Normal University, Changchu, Jilin 130024, China;
hydrothermal synthesis, crystal structure, manganese ( Ⅱ ) complex, magnetic properties;