Coordination　molecule　clusters　assembled　from　a　large　number　of　metal　ions　and　organic　ligands　are　structurally　and　functionally　challenging　to　characterize.　Here,　a　series　of　new　hetero-metallic　nano-clusters　{Mn(6)Ln(2})　(Ln　=　La　1,　Ce　2,　Sm　3,　Gd　4)　were　obtained　via　solvothermal　method.　These　complexes　possess　unique　crystalline　structures　with　vertex-sharing　UFO-shaped　[Mn(6)Ln(2)]　cores.　Interestingly,　adjacent　cluster　molecules　can　further　form　a　three-dimensional　framework　structure　through　pi-pi　stacking　interaction　between　acenaphthenequinone　dioxime　ligands.　Magnetic　tests　show　strong　ferromagnetic　exchange　interactions　within　the　{Mn(6)Ln(2)}　clusters.