Abstract
A coordination polymer {[Mn(H2O)2(C11H20N4O2)2]2+·2(NO3−)}n is synthesized and its structure is determined. The crystals are monoclinic: space group P21/c, a = 12.3771(3) A, b = 14.8775(3) A, c = 18.1388(4) A, β = 106.611(2)°, V = 3200.70(12) A3, dx = 1.44 g/cm3, Z = 4. Manganese ions are coordinated with four oxygen atoms of four organic ligands (two unique) and two water molecules. The coordination polyhedron is a distorted octahedron; the O-Mn-O angles between the adjacent oxygen atoms fall within 83.96(5)–98.11(5)°. The nitrate anions are in the outer coordination sphere. The Mn...Mn distances in the polymer are 8.56 A. In the crystal, polymeric coordination chains are joined in layers perpendicular to the b axis by hydrogen bonds involving the organic ligands, water molecules, and nitrate anions.
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