The Costa Rica upwelling dome (CRD; ;8.678N and 90.68W) was characterized chemically for cobalt and nickel abundances and speciation and biologically using cyanobacterial abundances and phylogeny. Total dissolved cobalt was 93 pmol L21 at 90 m depth and decreased in surface waters to 45 pmol L21 at 10 m. Cobalt was 40% labile at 90 m but was completely complexed by strong ligands at 10 m. A sur...

In the title polymer, {[Cu(SO(4))(C(12)H(9)N(3)O)(2)(H(2)O)(2)]·4H(2)O}(n), both the metal center and the sulfate anion are located on a twofold axis. The Cu(II) ion is coordinated by two pyridyl N atoms from two symmetry-related organic ligands, two O atoms from two symmetry-related water mol-ecules, and two O atoms from two symmetry-related sulfate anions, resulting in a distorted octa-hedral...

This review focuses on the impacts of metal-organic interfacial bonding interactions on the charge-transport dynamics involved in molecular junctions as well as organically capped nanoparticles. Whereas mercapto derivatives have been used extensively as the ligands of choice to functionalize metal and nanoparticle surfaces with the formation of metal-thiolate interfacial bonds, recent studies s...

In the centrosymmetric title compound, [Ni(C7H6FN2O2)2(H2O)2], the Ni(II) cation is in a slightly distorted octa-hedral environment and is surrounded by four O atoms from the N-O groups of the organic ligands [Ni-O = 2.0179 (13) and 2.0283 (12) Å], and two water mol-ecules [Ni-O = 2.0967 (14) Å]. The N-(2-fluoro-benz-yl)-N-nitroso-hydroxy-laminate monoanions act as bidentate chelating ligands. ...

In the title compound, [HgBr(2)(C(13)H(11)NO)(2)], the Hg(II) atom adopts a four-coordinated HgN(2)Br(2) geometry, formed by two pyridine N atoms from two ligands and two bromide anions. The complex is located on a twofold axis. The coordination geometry is close to forming a see-saw (SS-4) polyhedron, the symmetry-related organic ligands being almost perpendicular; the dihedral angles between ...

Supramolecular main group chemistry is a developing field which parallels the conventional domain of metallo-organic chemistry. Little explored building blocks in this area are metal-based ligands have appropriate donor symmetry to build desired molecular or extended arrangements. Tris(pyridyl) (E(py)3, E=main metal) potentially highly versatile since shifting N-donor arms from 2- 3-positions a...

Summary In this perspective, we have uncovered that reticular chemistry—responsible for phenomenal success in metal-organic frameworks—can be extended to Zr-based polyhedra (MOPs), a new porous platform emerging from materials. Guided by the combination of organic ligands and anion clusters selected MOP assembly, can narrow down possible choices topologies MOPs packed solid state. The ...

Cyclometallated compounds obtained via the well-known intramolecular C-H activation by transition metals of Nor Scontaining ligands may lead to organic heterocycles through reaction with alkynes. The mechanistic implications of the formation of both C-C and C-Y bonds are discussed. A reaction pathway involving insertion of the alkyne into the metalcarbon bond of the starting material followed b...

Synchrotron XPS was used to investigate a series of chemically-synthesised, atomically-precise gold clusters Au(n)(PPh(3))(y) (n = 8, 9, 11 and 101, with y depending on cluster size) immobilized on titania nanoparticles. The gold clusters were washed with toluene at 100 °C or calcined at 200 °C to remove the organic ligand. From the position of the Au 4f(7/2) peak it is concluded that cluster s...