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In the title compound, [HgCl2(C6H8N2)2], the two independent HgII cations are each located on a twofold rotation axis and coordinated by two pyridine N atoms from two 2-amino-3-methyl­pyridine ligands and two Cl anions in a distorted tetra­hedral geometry. An intra­molecular N—H...Cl hydrogen bond occurs in each independent complex mol­ecule. Inter­molecular N—H...Cl hydrogen bonds occur in the crystal structure.

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In the title compound, [Co(CH3COO)2(C6H8N2)2], the CoII ion is five-coordinated by two pyridine N atoms from two 2-amino-3-methyl­pyridine ligands, two O atoms from one acetate ion and one O atom from another acetate ion in a distorted trigonal–bipyramidal geometry. The pyridine rings are nearly perpendicular to each other [dihedral angle = 84.49 (16)°]. The crystal packing is stabilized by intra­molecular and inter­molecular N—H...O hydrogen-bonding inter­actions.

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In the centrosymmetric dinuclear title compound, [Hg2Cl4(C6H8N2)2], the HgII ion is four-coordinated by one pyridine N atom from a 2-amino-4-methyl­pyridine ligand, one terminal Cl atom and two bridging Cl atoms. A distorted tetra­hedral geometry is formed around each HgII ion. The crystal packing is stabilized by intra- and inter­molecular N—H...Cl hydrogen bonding. There are also π–π stacking inter­actions in the structure, with centroid-to-centroid distances of 3.594 (6) Å.
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