A new carboxylic acid functionalised cavitand forms [Cu(3)L(2)] metallo-cryptophanes with Cu(OAc)(2) that can be linked together into dimers with the bridging ligand 1,2-bis(4-pyridyl)ethylene. Reaction of the cavitand with Co(OAc)(2) gives a metallo-cryptophane with a central Co(7) cluster.

The reaction of Fe(CO)(2)(NO)(2) and Ni(N(2)S(2)) (N(2)S(2) = N,N'-Bis(2-mercaptoethyl)-1,4-diazacycloheptane) by a single CO replacement yields [Ni(N(2)S(2))]Fe(NO)(2)(CO), while an excess of Fe(CO)(2)(NO)(2) leads to triply bridging thiolate sulphurs in a cluster of core composition Ni(2)S(4)Fe(3), lacking one Fe(NO)(2) unit to complete the adamantane-like structure. This structural type was ...

The pollution emitted into the air from mining-metallurgical complex negatively affects the environment. Plants have the ability to accumulate pollutants in their tissues. The concentration of heavy metals Ni, Zn, Mn and Cu, as well as sulphur, were determined in the edible parts of fruits. The fruits of apple, pear, peach and apricot trees were sampled in rural areas in the vicinity of the ind...

A neutral W/S/Cu cluster, [Cu(3)WIS(4)(C(15)H(17)P)(3)], was formed by the reaction of tetra-thio-tungstate(VI), CuI and diphenyl-propyl-phosphine (dpp) in dimethyl-formamide. The title compound exhibits a neutral half-open cubane-like skeleton, with Cu-I bonds of 2.8056 (8) and 2.9008 (8) Å, and one Cu⋯I short contact of 3.1722 (6) Å. The W atom exhibits a tetra-hedral coordination geometry th...

Data from the PHOBOS detector have been used to study two-particle correlations over a broad range of pseudorapidity. A simple cluster model parameterization has been applied to inclusive two-particle correlations over a range of centrality for both Cu+Cu and Au+Au collisions at √ sNN = 200 GeV. Analysis of the data for Au+Au has recently been extended to more peripheral collisions showing that...

The structures and properties of 13-atom silver and copper bimetallic clusters are systematically investigated by density functional theory (DFT) in the theoretical frame of the generalised gradient approximation (GGA) exchange-collection function. Optical absorption, Raman spectra, vibrational spectra, as well as electronic and magnetic properties are calculated by DFT/GGA and semi-core pseudo...

The new π-extended redox-active ligand with both TTF and triazole units, 6-(4,5-bis(propylthio)-1,3-dithiol-2-ylidene)-1H-[1,3]dithiolo[4',5':4,5]benzo [1,2-d] [1-3]triazole, has been successfully prepared. Based on the versatile ligand and Cu(tta)2 precursors (tta(-) = 4,4,4-trifluoro-1-(thiophen-2-yl)butane-1,3-dione), a TTF-based pentanuclear Cu(II) cluster (Cu5(tta)4(TTFN3)6) is synthesized...

Using phenylphosphonic acid, simple tungstate and copper(ii) compounds as starting materials, an organic-inorganic hybrid Strandberg-type organophosphotungstate, {[(Cu(H2O)(μ-bipy))2(C6H5PO3)2W5O15]}n (bipy = 4,4'-bipyridyl) (1), was assembled successfully under hydrothermal conditions and characterized by physico-chemical and spectroscopic methods. Compound 1 represents the first example of a ...

Two 3-D and one 2-D metal-organic frameworks [Cu(8)I(8)(L1)(4)](n) (1), [Cu(8)I(8)(L2)(4)](n) (2) and [Cu(4)I(4)(L3)(2)](n) ()3 were synthesized using three novel pyridine and pyrazole supported 1,2,3-triazoles, 1-(4-picolyl)-4-butyl-1H-1,2,3-triazole (L1), 1-(4-picolyl)-4-pentyl-1H-1,2,3-triazole (L2) and 1-(4-picolyl)-4-(3,5-dimethylpyrazolylmethyl)-1H-1,2,3-triazole (L3). In both complexes 1...

We study the electronic structure of copper oxide clusters, Cu2Ox ~x51–4!, using anion photoelectron spectroscopy and density-functional calculations. The experiment is used to successfully guide a computational search for the cluster geometries. The predicted electron affinities at the obtained cluster structures reproduce exactly the trend observed experimentally. The definitive determination...