A reexamination of the structure of [ Cu(bipy)2 (ONO2)] (NO3).H2O suggests that it is best described as a distorted bicapped square pyramidal structure.
A reexamination of the structure of [ Cu(bipy)2 (ONO2)] (NO3).H2O suggests that it is best described as a distorted bicapped square pyramidal structure.
Oxidation of iron porphyrin vinylidene complexes yields products previously formulated as having an important iron(IV) porphyrin π-cation radical resonance form. Reconsideration of literature results and analogous cobalt porphyrin reactions leads to the conclusion that pyrrole nitrogen alkylation occurs and that the likely electronic structure is that of an intermediate-spin (S = ) iron(III) porphyrin.
The influence of the immediate chemical environment of Ca2+ ion on the 43Ca resonance was studied in aqueous and nonaqueous solutions by calcium-43 NMR.
A copper-binding complex formed in the exopolysaccharide fraction of was isolated and characterized using a variety of techniques. By comparison with model Cu(II) complexes of uronic acids, it is shown that the forms a square-planer, cupric complex similar to cupric glucuronates.
At low temperatures (EtO)2P(O)HgY (Y = OAc,O3SCF3,Cl,Br,I,S2CNEt2,S2P(OEt)2, 2,5-pyrrolidinedionato-N, and (EtO)2P(O)) form coordination compounds (EtO)2P(O)c HgY(PR3)n (R = n-Bu, Ph; n = 1–3 depending on Y); 31P and 199Hg NMR data are reported.
The preparation and behaviour as a ligand towards Pt(II) of the disulphoxide rac-1,2-cis-bis (phenylsulphinyl)ethene are here reported; this organic molecule contains several potential basic sites, of which only the sulphur atoms interact with the metal, forming a bidentate chelate.
High proline levels in the roots of copper-tolerant Armeria maritima are associated with copper tolerance and are not a response to copper stress.
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