Crystal and molecular structure of the monoclinic modification of Mn(S2CO-i-C3H7)2(2,2′-Bipy)

The crystal and molecular structure of modification II of the Mn(S2CO-i-C3H7)(2)(2,2'-Bipy) complex was determined from X-ray diffraction data ("Syntex P2(1)" diffractometer, CuKalpha radiation, 1603 F(hkl), R = 0.0446). The crystals are monoclinic, a = 23.350(3), b = 9.325(1), c = 22.030(2) Angstrom, beta = 106.98(1)degrees, V = 4587.7 Angstrom(3), Z = 8, d(calc) = 1.394 g/cm(3), space group C2/c. The structure consists of monomeric molecules in which the manganese atom has a distorted octahedral environment (4S+2N). The orthorhombic and monoclinic modifications of the complex are compared with respect to the molecular geometry and packing.