A series of titanium trichloride complexes , ligated with claw-type tetradentate aminophenolate ligands were synthesized from the direct reaction of TiCl4(THF)2 with 1 equiv. of the corresponding aminophenol in the presence of triethylamine. For comparison purposes, titanium isopropoxide complexes were also synthesized via the reaction of Ti(O(i)Pr)4 and 1 equiv. of the proligand. Similar react...

Zirconium tetra(tert-butoxide) reacts with surface amide groups of polyamide nylon 6/6 to give (eta(2)-amidate)zirconium complexes in high yield. These surface complexes react to bond the cell-adhesive peptide arginine-glycine-aspartic acid (RGD) to the polymer surface. A surface loading of 0.18 nmol/cm(2) of RGD is achieved, which is 20-1000 times higher than previously reported attainable on ...

We report our initial investigations into the use of tetraazamacrocycles as zirconium-89 chelators. We describe the synthesis and complete characterization of several Zr tetraazamacrocycle complexes, and definitively describe the first crystal structure of zirconium 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (Zr-DOTA) using single crystal X-ray diffraction analysis. After evaluati...

The phenoxyimine cationic complex [L1Y(CH2SiMe2Ph)(THF)3][BArF] (L1 = (3-tBu)-(O)–C6H3–CH?N-(2,6-iPr-C6H3)) was prepared starting from the homoleptic [Y(CH2SiMe2Ph)3(THF)2] yttrium and ligand HL1 subsequent cationization by anilinium borate salt. resulting characterized different techniques such as elemental analysis, NMR (1H, 13C, 89Y), more specifically 1H-coupled 89Y INEPT. reactivity of tow...

Vinylation of the chloro–ethyl and dichloro zirconium complexes [Zr(CpSi2Cp)ClX] (CpSi2Cp=1,1%,2,2%-(SiMe2)2(h-C5H3)2; X=Et, Cl) with one or two equivalents of Mg(CH CH2)Cl gave the new zirconacyclopentane [Zr(CpSi2Cp){hCH2 (CH2)2 CH2}] and (h-butadiene)zirconium [Zr(CpSi2Cp){h-(butadiene)}] complexes, respectively. Addition of a toluene solution of PhC CPh to the zirconacyclopentane compound a...

The synthesis, characterization and reactions of a series of titanium and zirconium complexes that incorporate a p-terphenolate ligand are described.

Relating to the catalytic dehydrocoupling of secondary phosphine substrates, zirconium phosphide complexes supported by triamidoamine and pentamethylcyclopentadienyl ligands exhibit different stability that is attributed to β-hydride elimination.

An overview on the developments of zirconium phosphate (ZrP) and its organic derivatives in heterogeneous catalysis in recent years is reported in the present review. Two basic aspects have been emphasized: first, the catalytic properties of zirconium phosphates were discussed, with particular attention to the effect of surface acidity and hydrophobic/hydrophilic character, textural properties,...

Synthesis and characterisation of new permethylpentalene (Pn*) zirconium bis(amido) Pn*Zr cyclopentadienyl mono(amido) complexes their reactivity with carbon dioxide.