RESUMO
The title complex, [Cu(SO4)(C13H13N3)(H2O)]·4H2O, was obtained by mixing copper sulfate penta-hydrate and 2-(pyridin-2-yl)-N-(pyridin-2-yl-methyl-idene)ethanamine in eth-anol under reflux conditions. The Cu(II) ion shows a Jahn-Teller-distorted octa-hedral geometry, with equatorial positions occupied by three N atoms from the tridentate ligand (average Cu-N = 2.004â Å) and one O atom from a bidentate sulfate anion [Cu-O = 1.963â (2)â Å]. The axial positions are occupied by one O atom from a coordinating water mol-ecule [Cu-O = 2.230â (3)â Å] and one weakly bonded O atom [Cu-O = 2.750â (2)â Å] from the bidentate sulfate ion. The complex mol-ecules are connected through O-Hâ¯O hydrogen bonds between the coordinating water mol-ecules and sulfate ions from neighboring complexes, forming a double chain parallel to the c axis. The chains are stabilized through additional hydrogen bonds by one of the non-coordinating water mol-ecules bridging between neighboring strands of the double chains. The remaining three water mol-ecules fill the inter-stitial space between the double chains and are involved in an intricate hydrogen-bonding network that consolidates the structure.
RESUMO
In the title complex, [MnCl(2)(C(13)H(13)N(3))]·H(2)O, the Mn(II) atom is in a distorted square-pyramidal environment, with an Addison τ parameter of 0.037. The coordination geometry is defined by three N-atom donors from the tridentate 2-(pyridin-2-yl)-N-(pyridin-2-yl-methyl-idene)ethanamine ligand and two terminal Cl atoms. Although the H atoms of the lattice water molecule were not located, Oâ¯O distances of 3.103â (7)â Å and Oâ¯Cl distances of 3.240â (3) and 3.482â (4)â Å suggest that hydrogen bonding is responsible for the stabilization of the crystal packing.
RESUMO
In the title compound, C(21)H(17)N(3)O(3), the dihydro-quinazoline ring adopts a screw-boat conformation and its stereogenic C atom has an S configuration. The dihedral angle between the mean planes of the two hy-droxy-phenyl rings is 86.61â (12)°. The amino H atom forms an intra-molecular hydrogen bond with a phenol O atom, while the hydrazine N atom acts as an acceptor for the H atom of the other phenol group. In the crystal, O-Hâ¯N and O-Hâ¯O hydrogen bonds and weak C-Hâ¯centroid(π-ring) inter-molecular inter-actions are observed, forming chains along [1-10] and [110].