Iron- and nickel-substituted decaniobates, [H2Fe(III)Nb9O28](6-) and [H3Ni(II)Nb9O(28)](6-) were hydrothermally synthesized as tetramethylammonium salts and the structures were determined by X-ray crystallography. The highly soluble title compounds were characterized by ESI-MS, FT-IR and UV-Vis titration.

Exposure to chemical mixtures is more common than exposure to a single chemical. Skin is the largest tissue in the human body and is an important route of exposure to chemical mixtures. The aim of this study was to assess the effect of toluene, trichloroethylene (TCE) and phenol on the dermal bioavailability of nickel. All four compounds are prevalent in the environment, at industrial facilitie...

Hydrogenases are generally classified as iron-sulfur-containing proteins with four to twelve iron atoms in different cluster arrangements. Through physiological, chemical and spectroscopic studies,nickel has also been found to be a constitutive metal of several hydrogenases and shown to be involved in a redox linked process. The [NiFe] hydropnnses are now the most intensivelly studied nickel en...

p-tert-Butyltetrathiatetramercaptocalix[4]arene, [S(4)Calix(Bu(t))(SH)(4)], reacts with Mo(PMe(3))(6), W(PMe(3))(4)(eta(2)-CH(2)PMe(2))H and Ni(PMe(3))(4) to yield molybdenum, tungsten and nickel compounds in a sulfur-rich coordination environment.

A one-pot nickel-catalyzed allylation of aromatic aldehydes with α-halo-β,β-difluoropropene-containing compounds promoted by ZnEt(2) under mild conditions was described. The reaction displays moderate to good regio- and diastereoselectivity, tolerates a wide range of functional groups, and provides an efficient method for the synthesis of γ-fluorinated homoallylic alcohols.

One of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. In this paper, the authors have studied thermal behaviour for Schiff base ligand and their synthesized Cobalt, Nickel complexes. In this method, the sample is opposed to a controlled temperature change and its physical properties. Here we studied melting point and Tg...

Linear nickel nitrosyl compounds supported by tridentate nitrogen and selenium ligands, namely the tris(3,5-dimethylpyrazolyl)hydroborato and tris(2-seleno-1-mesitylimidazolyl)hydroborato complexes, [TpMe2]NiNO and [TseMes]NiNO, have been synthesized and structurally characterized by X-ray diffraction. Computational studies demonstrate that the linear nitrosyl ligand behaves as a trivalent X3 l...

Three novel polyoxoanion-supported compounds modified by conjugated organic ligand tris(2-benzimidazylmethyl)amine (NTB) and nickel ions, [Ni(NTB)(H2O)]2(H2P2Mo5O23)·9.25H2O (1), [Ni(H2O)(NTB)]2(PMoMo(V)O40)·4.5H2O (2) and [Ni(NTB)]2(Mo8O26)·9H2O (3), have been successfully synthesized under hydrothermal conditions at different pH values. The compounds 1-3 contain similar rigid concave surfaces...

Two unprecedented nickel-boron cluster-containing POMs have been isolated through a facile approach by the reactions of trivacant [A-α-SiW9O34](10-) and Ni(2+) in borate buffer. The {BO3} and {B2O4(OH)2} units enclosed in the Ni8 cluster of 1 and the Ni12 cluster of 2 play important templating roles in the assembly of the target compounds.