(Acetato-O,O')(acetato-O)(2,9-dimethyl-1,10-phenanthroline-N,N')zinc(II)

New zinc(II) complexes of the Non-steroidal Anti-Inflammatory Drug (indomethacin) and various nitrogen donor ligands. Synthesis, characterization and biological activity

“…Zn-O bond distances are between of 1.974 and 2.403 Å, as it is reported by Kremer-Aach et al (1997) in which Zn-O distances of bidentate carboxylates varies over a wide range and different values as 1.932 and 2.460 Å showing a greatest asymmetry in this binding mode to metals [26], Zn-O of bridging indomethacin are within 1.975-2.081 Å which is in accordance with similar bonds of (Zn 2 (indo) 4 L 2 ) complexes [27] that occur in the range of 2.038 Å.…”

Dibromido(2,9-dimethyl-1,10-phenanthroline-κ2 N,N′)zinc

“…1), the two N atoms of one phen ligand and two Br atoms are coordinated to Zn II atom in a distorted tetrahedral arrangement. The Zn-N bonds [average 2.062 Å] are somewhat shorter than the Zn -Br distances [average 2.328 Å] and they are closed to such bond lengths found in other discrete 1,10-phenanthroline derivatives of zinc complexes (Seebacher et al, (2004); Harvey et al,(1999)). The two N atoms bite angle of phen ligand, N(2)-Zn(1)-N(1), significantly is smaller than N(2)-Zn(1)-Br(1)and N(1)-Zn(1)-Br(2).…”

“…For similiar structures, see: Seebacher et al (2004); Harvey et al (1999); Jordan et al (1991); Pallenberg et al (1997). Data collection: X-AREA (Stoe & Cie, 2005); cell refinement: X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).…”

Unique Ligand‐Based Oxidative DNA Cleavage by Zinc(II) Complexes of Hpyramol and Hpyrimol

“…The inplane angles range from 58.40 (11) to 104.93(11)8, which reveals the distorted geometry. The equatorial Zn À N and Zn À O bond lengths [25,29] as well as the bond lengths observed for the bidentate acetate [30] can be considered as normal. The axial positions of the octahedron are occupied by the amine nitrogen atom N2 from a pyramol and the phenolate oxygen atom O1' from a second pyramol ligand, at expected elongated bond lengths (Figure 1).…”