The central part of the title centrosymmetric dinuclear complex, [Zn(2)(C(7)H(5)O(2))(4)(C(9)H(12)N(2))(2)], has a paddle-wheel conformation with four benzoate ligands bridging two symmetry-related Zn(II) ions. The distorted square-pyramidal coordination environment around the Zn(II) ion is completed by an N atom from a 4-(pyrrolidin-1-yl)pyridine ligand. The Zn⋯Zn separation of 2.9826 (12) Å d...

The crystal structure of the title complex, [Zn(C(7)H(6)NO(2)S)(2)(H(2)O)](n), consists of extended layers parallel to (001) with 2-(pyridin-4-ylsulfan-yl)acetate ligands bridging the Zn(II) atoms. The Zn(II) atom shows a distorted penta-gonal-bipyramidal coordination environment. The Zn(II) and one O atom are situated on a crystallographic twofold rotation axis. In the crystal, intra-layer O-H...

The coordination geometry of the Zn(II) atom in the title complex, [Zn(2)(NO(2))(4)(C(6)H(8)N(6))(2)], is distorted octa-hedral, in which the Zn(II) atom is coordinated by two N atoms from the triazole rings of two symmetry-related 1,2-bis-(1,2,4-triazol-4-yl)ethane ligands and four O atoms from two nitrite ligands. Two Zn(II) atoms are bridged by two organic ligands, forming a centrosymmetric ...

A Zn(II) macrocyclic complex with appended quinoline is a bifunctional recognition agent that uses both the Zn(II) center and the pendent aromatic group to bind to thymine in bulges with good selectivity over DNA containing G, C or A bulges. Spectroscopic studies show that the stem containing the bulge stays largely intact in a DNA hairpin with the Zn(II) complex bound to the thymine bulge.

Detailed electronic structures of Zn(II) and Cu(II) clusters from metallothioneins (MT) have been obtained using density functional theory (DFT), in order to investigate how oxidative stress-caused Cu(II) intermediates affect Zn-binding to MT and cooperatively lead to Cu(I)MT. The inferred accuracy is ∼0.02-0.03 Å for metal-thiolate bond lengths for the models that are the most realistic MT mod...

Hydro-thermal reaction of NaSCN, piperazine, Zn(II) and 2,6-naphthalenedicarboxylic acid in aqueous solutions gave rise to the title complex, [Zn(NCS)(3)(C(4)H(11)N(2))]. The Zn(II) atom is four-coordinate with distorted tetra-hedral geometry and lies in a mirror plane. N-H⋯S hydrogen bonds assemble the mol-ecules to form a three-dimensional framework.

Two tridentate N-heterocyclic ligands chelate the Zn(II) atom in the title compound, [Zn(C(12)H(16)N(4))(2)](PF(6))(2), conferring a fac-octa-hedral geometry. The Zn(II) atom lies on a center of inversion. The cation is linked to the anion by an N-H⋯F hydrogen bond.

AIMS Establishing probe-based analysis is important for developing multi-photon microscopy (MPM) to make an early diagnosis of colon neoplasm and assess its antioxidant status. Cu(I) and Zn(II) ions are trace elements which roll as cofactors of antioxidant, superoxide dismutase. However, there have been no reports on the features of MPM image using probe of Cu(I) and Zn(II) ions. Our main objec...

2-(pyridine-2-yl)-N-p-chlorohydrazinecarbothioamide (HCPTS) was synthesized, characterized and successfully applied for the preconcentration of Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II) in water, blood, and urine samples prior to graphite furnace atomic absorption determination (GFAAS); Hg was determined by cold vapor technique. Under the optimum experimental conditions...