摘要
A series of inorganic-organic hybrids K2NamH9-m[{Ln(GeW11O39)2}{Cu2(bpy)2(μ-ox)}]·nH2O(bpy=2,2-bipyridine and ox= oxalate;Ln=La,Nd,Sm,Eu,Gd;n=19,17,22,20,19;m=4,4,4,9,2)were isolated after reacting in a potassium acetate buffer.X-ray structural analyses show that compounds 1-5 are isomorphic and consist of[Ln(GeW11O39)2] 13-polyoxoanion building blocks and oxalate-bridged dinuclear copper metalorganic complex with a 1D chain structure.The 1D chain further connects into the 3D framework byπ-πinteractions with neighboring bpy groups.The magnetic susceptibility data indicate that anti-ferromagnetic coupling between the neighboring Cu2+ions in the structure and the rare earth ions affects magnetic property of the structure.
A series of inorganic-organic hybrids K2NamH9-m[{Ln（GeW11O39）2}{Cu2（bpy）2（μ-ox）}]·nH2O （bpy = 2,2-bipyridine and ox = oxalate; Ln = La, Nd, Sm, Eu, Gd; n = 19, 17, 22, 20, 19; m = 4, 4, 4, 9, 2） were isolated after reacting in a potassium acetate buffer. X-ray structural analyses show that compounds 1-5 are isomorphic and consist of [Ln（GeW11O39）2]13- polyoxoanion building blocks and oxalate-bridged dinuclear copper metalorganic complex with a 1D chain structure. The 1D chain further connects into the 3D framework by π-π interactions with neighboring bpy groups. The magnetic susceptibility data indicate that antiferromagnetic coupling between the neighboring CuE＋ ions in the structure and the rare earth ions affects magnetic property of the structure.
