The reaction of copper(ii) acetate with 2-furancarboxylate (Hfur, pyromucate) anions and the N-donor ligands 4-phenylpyridine (phpy) 3-aminopyridine (NH2py) in acetonitrile afforded mononuclear complexes composition [Cu(fur)2(phpy)2(H2O)] · phpy (1) [Cu(fur)2(NH2py)2] (2), respectively. structures were established by X-ray diffraction. simultaneous thermal analysis behavior complex 1 showed tha...

Even if iminophosphoranes (R3P = NR′) were described more than a century ago they remain much less investigated in coordination chemistry phosphine or N-heterocyclic based ligands, while present like the latter strong electron-donor ability. The variety of complexes supported by tridentate iminophosphorane (PN) ligands is reviewed on nature sites and their reactivity and/or catalytic applicatio...

The title zinc bis(thiosemicarbazone) complex, [Zn(C 22 H 17 N 4 O 2 S) ], comprises two , S -donor anions, leading to a distorted tetrahedral donor set. resultant five-membered chelate rings are nearly planar and form dihedral angle of 73.28 (3)°. configurations about the endocyclic- exocyclic-imine bonds Z E respectively, that ethylene bond is . major differences in conformations ligands seen...

This thesis describes the synthesis of a series of mixed N,0,S donor ligands, their co-ordination chemistry using palladium, rhodium and iridium metal precursors and their catalytic behaviour. First synthesised were a series of potential tripodal oxygen donor ligands mimicking the synthesis of meTAM but incorporating a fourth additional group that was hoped to preferentially co-ordinate to a me...

To improve our understanding of uranium toxicity, the determinants of uranyl affinity in proteins must be better characterized. In this work, we analyzed the contribution of a phosphoryl group on uranium binding affinity in a protein binding site, using the site 1 EF-hand motif of calmodulin. The recombinant domain 1 of calmodulin from A. thaliana was engineered to impair metal binding at site ...

Four dinuclear CoII complexes have been synthesized and structurally characterized with the dinucleating ligand susan (susan=4,7-dimethyl-1,1,10,10-tetra(2-pyridylmethyl)-1,4,7,10-tetraazadecane) varying in exogeneous ligands: [(susan){CoII(CH3CN)2}2](PF6)4, [(susan){CoIICl}2](ClO4)2, [(susan){CoIIBr}2](ClO4)2, [(susan){CoII(μ-OH)CoII}](ClO4)3. The ions are six-coordinate CH3CN ligands five-coo...

Under carbonylative conditions, neutral Rh(I)-systems modified with weak donor ligands (AsPh3 or 1,4-oxathiane) undergo N-Cbz, N-benzoyl, or N-Ts directed insertion into the proximal C-C bond of aminomethylcyclopropanes to generate rhodacyclopentanone intermediates. These are trapped by N-tethered alkenes to provide complex perhydroisoindoles.

Selective capture of UO22+ and Sr2+ ions represents a key component in the nuclear fuel reprocessing, accident prevention, environmental protection. We report herein proof concept, employing metal-organic cage (MOC) for selective or ions, through using C3-symmetrical multiple-carboxylate ligand (H3L) to fix uranyl together. By means such MOC approach, we can facilitate extraction from multiple ...

The importance of uranyl(V) (UO2+) species associated with environmental and geologic applications is becoming increasingly evident, but the tendency cation to disproportionate in water has prevented isolation stable complexes. Here we demonstrate that presence tridentate complexing dipicolinate (dpa2?), a ligand highly abundant soil, can be stabilized isolated anoxic basic water. Stable comple...