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The heterometallic Ln(III)-Cu(II) coordination polymers [CuLn2(IN)8(H2O)4]n (IN = isonicotinate, Ln = Gd (1), Dy (2), Er(3)) have been synthesized by hydrothermal reactions and characterized by elemental analysis, IR and single crystal X-ray diffraction. The compounds are isomorphous and crystallize in monoclinic space group P21/c, adopting a one-dimensional chain structure with alternately arranged [Ln2(IN)6(H2O)4] and [Cu(IN)2] building blocks bridged by isonicotinates. Temperature-dependent magnetic susceptibility for complex 1 was studied, and a very weak ferromagnetic interaction between metal ions was observed. [ABSTRACT FROM AUTHOR]

The reaction of silver perchlorate with 2-amino-3-methylpyridine gives a one-dimensional zigzag coordination polymer {[Ag(2-amino-3-methylpyridine)](ClO4)}8 (1) consisting of single chains. The geometry of all Ag(I) cations is linear: each ion links together two 2-pyridyl (Ag1) rings and two 2-amino (Ag2) groups, with the ligand exhibiting a ‘head-to-head’ orientation. Crystal data: monoclinic P2(1)/c, a?=?5.2296(8), b?=?20.668(3), c?=?8.8716(14)?Å, ß?=?100.359(3)°, V?=?943.3(3)?Å 3 , Z?=?2, Dc?=?2.214?Mg/m 3 , µ?=?2.409?mm -1 , F(000)?=?612, R1?=?0.0426, wR1?=?0.0980 [I?>?2s(I)], S?=?0.969. [ABSTRACT FROM AUTHOR]