Herein we report the synthesis and structural characterization of a series of novel Zr(iv)salan complexes. The initial metalation product [(L1)2Zr] is highly water sensitive while ligand exchanged [L1Zr(dipic)] hydrolyses slowly with a bis-hydroxo Zr(iv) species identified by MS as an intermediate. [L1Zr(dipic)] is cytotoxic in the range of cisplatin against two human carcinoma cell lines.

Layered double hydroxides (LDHs) and rare earth elements (REEs) have both attracted extensive attention because of their structures and properties. The layered structure of LDHs makes it possible for many functional ions to be incorporated and the uniform dispersion of metal organic anions in interlayer galleries or metal cations in layers extends the applications of layered materials to a wide...

The present article describes novel oxidative protocols for direct esterification of alcohols. The protocols involve successful demonstrations of both "cross" and "self" esterification of a wide variety of alcohols. The cross-esterification proceeds under a simple transition-metal-free condition, containing catalytic amounts of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy)/TBAB (tetra-n-butylamm...

In the title complex, [Pd(C(7)H(3)NO(4))(C(13)H(9)N)], the Pd(II) ion is four-coordinated in a distorted square-planar environment by one N and two O atoms from the tridentate pyridine-2,6-dicarboxyl-ate (dipic) anionic ligand and one N atom of the acridine (acr) ligand. The dipic and acr ligands are nearly planar [maximum deviation = 0.069 (3) Å in dipic and 0.091 (4) Å in acr] and the dihedra...

Colourless block crystals of the title compound, Cs(3)[Lu(dipic)(3)]·8H(2)O [dipic is dipicolinate or pyridine-2,6-dicarboxyl-ate, C(7)H(3)NO(4)] were synthesized by slow evaporation of the solvent. The crystal structure of this Lu(III)-complex, isostructural with the Dy(III) and Eu(III) complexes, was determined from a crystal twinned by inversion and consists of discrete [Lu(dipic)(3)](3-) an...

51V NMR Spectra, Oxovanadium, Nitrosylvanadium, Hydroxylamidovanadium The 51V NMR spectra are recorded for 3 dinuclear complexes {VO (ONR2 )2 O and 13 mononuclear vanadium (-f V) and (+III) chelate complexes of the general formula [VXYZ]Q, where X = 02-, NO"; Y = 02~, 022" , R2NO~; and Z = picolinate-(pic), dipicolinate2(dipic), nitrilo-tri(2-propanolate)3_, and o-phenanthroline (phen). Shieldi...

In this study, cost-effective, environmentally friendly well-fabricated SnO2/TiO2 nanocomposite synthesized via hydrothermal route and the photocatalytic activity was validated using (NH3-trz)[Fe(dipic)2] complex under ultra-violet illumination. The structural features of catalysts were systematically examined by various characteristics. photoreactivity model compound in water/binary solvent sy...

Chelate stabilization of a titanium(IV)-salan alkoxide by ligand exchange with 2,6-pyridinedicarboxylic acid (dipic) resulted in heptacoordinate complex 3 which is not redox-active, stable on silica gel and has increased aqueous stability. 3 is highly toxic in HeLa S3 and Hep G2 and has enhanced antitumor efficacy in a mouse cervical-cancer model.