Department of Chemistry, Nankai University, Tianjing 300071, China;
Department of Chemistry, Nankai University, Tianjing 300071, China;
Department of Chemistry, Nankai University, Tianjing 300071, China;
Department of Chemistry, Nankai University, Tianjing 300071, China;
State Key Laboratory of Coordination Chemistry, Nanjing 210093, China;
Department of Chemistry, Nankai University, Tianjing 300071, China;
Department of Chemistry, Nankai University, Tianjing 300071, China;
synthesis; crystal structure; trimer; μ-oxamido bridge; hetero-tetranuclear;