A pair of new dioxomolybdenum(VI) complexes, [MoO 2 L 1 (MeOH)]•[MoO 2 L 1 (EtOH)] (1) and [MoO 2 L 2 (MeOH)]•[MoO 2 L 2 (EtOH)] (2), where L 1 and L 2 are the dianionic forms of N'-(2-hydroxy-3-methoxybenzylidene)-2-hydroxy-3-methylbenzohydrazide and N'-(3-ethoxy-2-hydroxybenzylidene)-2-hydroxy-3methylbenzohydrazide, respectively, have been synthesized and characterized by elemental analysis, FT-IR spectra, and single crystal X-ray determination. The crystal of (1) is triclinic: space group
A rarely seen phenolato and azido-bridged polymeric cadmium(II) complex derived from the Schiff base ligand 2-bromo-6-[(2-isopropylaminoethylimino)methyl]phenol (HL) has been prepared and characterized by elemental analysis, IR spectroscopy, and single crystal X-ray diffraction. The Schiff base ligand coordinates to the Cd atom through the NNO donor set. The Cd atom is hexa-coordinated in an octahedral geometry. Adjacent two Cd atoms are bridged by two phenolato groups generating a dimer with Cd···Cd distance of 3.475(1) Å. The dimers are further linked via azido bridges forming 2D sheets parallel to the bc plane.
Two hydrazone compounds, 3-hydroxy-N 0 -[methyl (2-pyridyl)methylene]-2-naphthohydrazide monohydrate (1), and 3-hydroxy-N 0 -(3,5-dibromo-2-hydroxybenzylidene)-2-naphthohydrazide dimethylformamide solvate (2), have been prepared and characterized by elemental analysis, IR spectra, 1 HNMR spectra, and X-ray single crystal structural determination. Compound (1) crystallizes in the monoclinic space group C2/c with unit cell dimensions a = 11.072(2) Å , b = 12.017(2) Å , c = 23.753(3) Å , b = 95.710(2)°, V = 3144.7(9) Ǻ 3 , Z = 8, R 1 = 0.0780, and wR 2 = 0.1465. Compound (2) crystallizes in the triclinic space group P-1 with unit cell dimensions a = 7.601(2) Å , b = 16.522(4) Å , c = 17.048(3) Å , a = 92.516(11)°, b = 96.726(12)°, c = 94.117(12)°, V = 2117.8(8) Ǻ 3 , Z = 4, R 1 = 0.0490, and wR 2 = 0.1012. The hydrazone molecules in the compounds adopt trans configurations about the C=N double bonds. The crystal structures of the compounds are stabilized by intermolecular hydrogen bonds and pÁÁÁp stacking interactions.
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