1,721,226 research outputs found
I2-adducts of thione containing-ligands: possible industrial and bio-medical applications
No full textAn alternative chemistry for the recovery of precious metals from waste industrial materials
No full textExploiting the potential of adaptive building components by means of innovative control strategies
Full text linkL'abstract è presente nell'allegato / the abstract is in the attachmen
Halogen-Chalcogen X-E (X = F, Cl, Br, I; E = S, Se, Te) Chemistry: Charge-Transfer (C.-T.) adducts and related compounds
No full textCopper(I) complexes from CuX2(X = NO3, BF4, 1 2SO4) and some heterocyclic ligands containing the thioamido group
No full textComplexes of copper(I) CuLnX(n = 2, 3; X = NO3, BF4 1 2SO4) have been obtained by reacting the corresponding copper(II) salts with the following ligands HNCH2·CH2X·C = S (where X = NH, NMe, NEt, S, O and CH2). All the ligands bind the metal through the thioketonic sulphur, as shown by the IR spectroscopy. The copper(I) seems always to realize a trigonal planar geometry both with three molecules of ligands and with two ligands and
1H bridging and terminal hydride T1 values. Comments on classical vs non classical hydride identification using T1 criteria.
No full textHydride 1H T1 values are reported for a selected series of ruthenium, iridium and platinum complexes. These T1 values range from 6.9 to 0.05 s with the shortest value, 0.05 s, assigned to a complex containing both hydride and coordinated molecular hydrogen, i.e. “M(H2)”. There are nuclear Overhauser enhancements arising both from protons on coordinated ligands and other hydride ligands. It is suggested that the molecular weight of the complex and the measurement conditions can be important factors for T1
Charge-Transfer (C.-T.) adducts and Related compounds
No full textReactions of di-halogens (I2, Br2) and inter-halogens (IBr, ICl) with organic molecules containing Group 16-donor atoms (LE; L = organic framework, E = S, Se, Te) have been the subject of renewed interest in the past few years both for their intrinsic interest and for their implications in different..
Copper(I) complexes of pentatomic heterocyclic selone donors.
No full textNew complexes of copper(I) with some heterocyclic pentatomic rings, X·CH2·CH2·NR·CSe, where X=CH2, NH, NMe, NEt, S and R=H, Me, Et, were prepared by reacting copper(II) chloride and bromide in MeOH. The stoichiometry of the complexes and the binding mode of the ligands have been discussed comparatively, together with those of the thione parents. It is noteworthy that the selone ligands with R=H (L) yield complexes of the type CuLnY, (n=1,2 or 3; Y=Cl or Br) like the corresponding thione ones. On the contrary, when R=Me or Et, the selonic ligands (L′) give complexes whose stoichiometries, Cu2L′Y2 and Cu3L′2Y3, differ from the thione homologues. The i.r. spectra of the complexes compared with those of the ligands support the coordinative bond via selenium atom
Palladium(ii) complexes with chiral organoantimony(iii) ligands. Solution behaviour and solid state structures
No full textThe chiral compound (2-Me2NCH2C6H 4)PhSbCl (1) was obtained from (2-Me2NCH2C 6H4)Li and PhSbCl2 in 1:1 molar ratio, while (2-Me2NCH2C6H4)Mes2Sb (2) was prepared from (2-Me2NCH2C6H 4)SbCl2 and MesMgBr in 1:2 molar ratio. The compounds 1 and 2 were used to obtain the Pd(ii)/stibine complexes: [Me2NHCH 2C6H5]+[PdCl3SbCl(Ph) (C6H4CH2NMe2-2)-Sb]- (3) and [PdCl2SbMes2(C6H4CH 2NMe2-2)-N,Sb] (4). All the compounds were characterized by multinuclear NMR spectroscopy in solution, elemental analysis, mass spectrometry and single-crystal X-ray diffraction studies. In compounds 1-3 the coordination geometry around the antimony atom is pseudo-trigonal bipyramidal, while in compound 4 a tetrahedral geometry around the antimony atom is observed. Theoretical calculations at the DFT level on compounds 1-4 were used in order to gain insight into the nature of the coordinative bonds
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