A novel one-dimensional chain cyano-bridged complex [Sm(DMF)(4)(H2O)(2)Mn(CN)(6)center dot H2O](n): Long-range magnetic ordering, T-c=18 K and coercive force H-c=600 Oe

A novel cyano-bridged heteronuclear complex [Sm(DMF)(4)(H2O)(2)Mn(CN)(6).H2 O](n) has been synthesized based on the reaction of K3Mn(CN)(6), Sm(NO3)(3) . 6H(2)O and N,N-dimethylformamide (DMF). The crystal structure shows that title complex is a one-dimensional chain complex with two cis-CN bridging l igands between Sm atom and Mn atom. The measurement of magnetic property ev idences an antiferromagnetic interaction between Sm and Mn atom. It is very interesting that title complex exhibits unusual magnetic properties, such as long-range magnetic ordering, critical temperature T-c = 18 K and strong er coercive force H-c = 600 Oe.