Solvothermal syntheses and crystal structures of two 4-heterocyclic acylpyrazolone complexes

Many explorations of transition metal (M)-L system under solvothermal condition, have led to the syntheses of two new 4-heterocyclic acylpyrazolone complexes [Co(L)(2)(CH(3)OH)(2)] (HL = 1-phenyl-3-methyl-4-(2-furoyl)-5-pyrazolone) (1) and [Cr(L)(3)] (2). Single-crystal X-ray analyses reveal that crystal structures of compound 1 and 2 are respectively orthorhombic, Pbca, a = 15.0378(6) angstrom, b = 9.8405(4) angstrom, c = 20.7321(8) angstrom, V = 3067.9(2) angstrom(3), Z = 8 and triclinic, P-1, a = 10.7966(18) angstrom, b = 13.023(2) angstrom, c = 15.520(3) angstrom, alpha = 73.011(4)degrees, beta = 84.884(4)degrees, gamma = 70.267(4)degrees, V = 1964.3(6) angstrom(3), Z = 2. Complex 1 has a two-dimensional (2D) network structure that is formed by O-H center dot center dot center dot N H-bonding interactions. Complex 2 makes a one-dimensional (1D) zigzag chain structure by intermolecular pi center dot center dot center dot pi interactions, which is further interlinked via C-H center dot center dot center dot N H-bonding interactions to generate a 2D sheet, and then a three-dimensional (3D) supramolecular network structure is further linked by intermolecular C-H center dot center dot center dot pi interactions. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim