CRYSTAL-STRUCTURE OF [MN(BPY)(3)](CLO4)(2)CENTER-DOT-0.5(BPY) (BPY=2,2'-BIPYRIDINE)

A new monomeric manganese(II) complex with 2,2'-bipyridine (bpy), [Mn( bpy)(3-)] (ClO4)(2) . 0.5(bpy), has been prepared and characterized by X-ray crystallography. The complex crystallizes in the triclinic spac e group P (1) over bar with a = 9.535(2), b = 13.194(3), c = 14.854(3) Angstrom, alpha = 96.50(3), beta = 107.26(3), gamma = 91.19(3)degrees , V = 1770.2(7) Angstrom(3), and Z = 2. The structure comprises discre te [Mn(bpy)(3)](2+) cations in which the metal atom is coordinated in a highly distorted octahedral environment by three chelate bpy ligands [Mn-N = 2.229(3) - 2.289(2) Angstrom]. The solvate bpy molecule and a pair of coordinated bpy ligands each from the adjacent cations are ar ranged in an off-set fashion, showing significant intermolecular stack ing interaction with close interplanar contacts of ca. 3.47 Angstrom.