In the title complex, [Zn(C(6)H(3)N(3)O(3)S)(C(12)H(8)N(2))](n), the Zn(2+) cation is coordinated by two N atoms from two 4-sulfonato-benzotriazolide dianions, two N atoms from a 1,10-phenanthroline mol-ecule and a sulfonate O atom from a 4-sulfonato-benzotriazolide anion, displaying a distorted ZnN(4)O trigonal-bipyramidal geometry. Each 1,10-phenanthroline ligand displays a bidentate chelatin...

A recent paper in PNAS (1) analyzed the evolution of metalloproteins and confirmed our earlier observation on the abundance of Zn-binding proteins among the most widespread – and evolutionarily oldest – protein folds (2). As that observation appeared to contradict the extremely low (<10 M) estimates of Zn levels in the primeval anoxic ocean (3), we had suggested that the first cells developed i...

In the title compound, {[Zn(C(9)H(9)N(5))(2)(H(2)O)(2)](ClO(4))(2)}(n), the Zn(II) ion lies on an inversion center and is coordinated by two triazolyl N atoms and two pyridyl N atoms from four symmetry-related N-1-(3-pyrid-yl)ethyl-idene-4H-1,2,4-triazol-4-amine (L) ligands and two O atoms from coordinated water mol-ecules in a slightly distorted octa-hedral environment. Each L ligand bridges s...

The title coordination polymer, poly[[μ-aqua-tri-aqua-(μ3-benzene-1,3,5-tri-carboxyl-ato)sodiumzinc] sesquihydrate], {[NaZn(C9H3O6)(H2O)4]·1.5H2O} n , was obtained in ionic liquid microemulsion at room temperture by the reaction of benzene-1,3,5-tri-carb-oxy-lic acid (H3BTC) with Zn(NO3)2·6H2O in the presence of NaOH. The asymmetric unit comprises two Na(+) ions (each located on an inversion ce...

Sorption potential of waste short hemp fibers for Pb(2+), Cd(2+) and Zn(2+) ions from aqueous media was explored. In order to assess the influence of hemp fiber chemical composition on their heavy metals sorption potential, lignin and hemicelluloses were removed selectively by chemical modification. The degree of fiber swelling and water retention value were determined in order to evaluate the ...

In the title mononuclear complex, [Zn(N(3))(2)(C(8)H(8)N(6))(2)], the Zn(II) atom, lying on a twofold rotation axis, is six-coordinated in a distorted octa-hedral environment by four N atoms from two 2,4-diamino-6-(2-pyrid-yl)-1,3,5-triazine ligands and two N atoms from two end-on-coordinated azide ions. N-H⋯N hydrogen bonds between the ligand and azide ion link the complex mol-ecules into a th...

M(2)L(4) molecular capsules self-assembled from M(II) ions (where M = Zn, Ni, and Pd) and bent bidentate ligands constructed from anthracene fluorophores. The Ni(II) and Zn(II) capsules exhibited weak to strong blue emission unlike traditional Pd(II) cages and capsules.

We have presented a detailed theoretical (density functional theory and ONIOM) study on the structure and M-PrP (prion protein) interaction on various prion models, M(PrP) systems (where PrP = HGG, HGGGW x 3H(2)O, and PrP(61-84), and M = Zn, Cu, Ni, Co, Fe, Mn). It was shown that the geometry of the complex [Mn(HGGGW)(H(2)O)] x 2H(2)O is quite different for M = Mn(III) and Mn(II), and partial u...

In the trinuclear title complex, di-μ-acetato-1:2κ(2)O:O';2:3κ(2)O:O'-bis-{μ-6,6'-dimeth-oxy-2,2'-[cyclo-hexane-1,2-diylbis(methanylyl-idene)]diphenolato}-1:2κ(6)O(1),N,N',O(1'):O(6),O(6');2:3κ(6)O(6),O(6'):O(1),N,N',O(1')-2-gadolinium(III)-1,3-dizinc hexa-fluor-idophosphate methanol monosolvate monohydrate, [GdZn2(C22H24N2O4)2(CH3COO)2]PF6·CH3OH·H2O, the two Zn(II) ions are located in the inne...

Metallo supramolecular assemblies of an 8-arm poly(ethylene glycol) partially substituted with terpyridyl end-groups and the transition metal ions Ni(2+), Fe(2+), Co(2+) and Zn(2+) were studied for their nano-particle formation at dilute conditions and gelation at higher concentrations. The large differences in dissociation rate constants of the metal ligand complexes largely determine the asse...