| Abstract: By using 1,4,7,10,13-pentaazacyclopentadecane (cpad) as terminal ligand, two isomorphous complexes[{Ni(cpad)}3M(CN)6]2[M(CN)6](ClO4)3·6H2O (M=Cr3+，1；Fe3+，2) are obtained. Crystal data: 1, trigonal, P3c1, a=1.514 41(18) nm, c=3.080 7(6) nm, V=6.118 9(15) nm3, Z=2; 2, trigonal, P3c1, a=1.497 62(17) nm, c=3.087 8(5) nm, V=5.997 6(14) nm3, Z=2. Each compound contains a tetrahedron-shaped tetranuclear cluster [{Ni(cpad)}3M(CN)6]3+, where [M(CN)6]3- coordinates to three [Ni(cpad)]2+ moieties through cyanide bridges. The positive charge of the cluster is balanced by both the discrete [M(CN)6]3- and perchlorate anions. The temperature dependent magnetic susceptibility measurements reveal that dominant ferromagnetic interactions are mediated in both compounds, with very weak inter-molecular antiferromagnetic interactions. CCDC: 670129, 1; 670130, 2. |
