A six-coordinate manganese (II) complex with the tripod ligand tris(2-benzimidazolylmethyl)amine (ntb), with composition [Mn(ntb) (4-hydroxycinnamate)](4-hydroxycinnamate) · (DMF)0.5 · (H2O)3, was synthesized and characterized by elemental and thermal analyses, electrical conductivity, IR, and UV/vis spectral measurements. The crystal structure of the complex has been determined by the single-c...

The cobalt(III) complexes of 4,11-diacetato-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane (1), [Co(1)]PF6, and 4,11-diacetamido1,4,8,11-tetraazabicyclo[6.6.2]hexadecane (2), [Co(2)][PF6]3, have been synthesized and characterized. The crystal structure of [Co(1)]PF6 consists of an octahedral cobalt(III) cation coordinated to all four ligand nitrogen donors in the macrobicycle s cavity, as well as to...

The interaction of a small library of cyclic DKP-RGD peptidomimetics with α5β1 integrin has been investigated by means of an integrated experimental and computational approach. Bioaffinity NMR techniques, including saturation transfer difference (STD) and transferred NOESY, were applied to the ligands in a suspension of intact MDA-MB-231 breast cancer cells, in which integrin α5β1 is highly exp...

The interactions of cyclic polyamines with tetraethoxysilane in the conditions of the Stöber synthesis of silica nanoparticles were studied and compared to the behavior of a linear polyamine. Granular core-plain shell hybrid particles were obtained whose morphology and size vary with the nature and amount of added ligand. The influence of polyamines on silica condensation could be understood on...

A series of cobalt salen complexes, where salen represents an N2O2 bis-Schiff-base bis-phenolate framework, are prepared, characterised and investigated for reversible-termination organometallic mediated radical polymerisation (RT-OMRP). The salen ligands contain a cyclohexane diimine bridge and systematically altered para-substituted phenoxide moieties as a method to examine the electronic imp...

Glutarimidedioxime (H(2)A), a cyclic imide dioxime ligand that has implications in sequestering uranium from seawater, forms strong tridentate complexes with UO(2)(2+). The stability constants and the enthalpies of complexation for five U(VI) complexes were measured by potentiometry and microcalorimetry. The crystal structure of the 1 : 2 metal-ligand complex, UO(2)(HA)(2)·H(2)O, was determined...

A new tetradentate Bis-benzimidazole based ligand, N-Octyl-N,N’-Bis-(2-MethylBenzimidazoly)-benzene-1, 3-dicarboxamide(O-GBBA) has been synthesized and utilized to prepare Iron (III) complexes of general composition [Fe(O-GBBA)X2].X.nH2O where X is an exogenous anionic ligand (X=Cl-, NO3 -). These complexes were prepared in the molar ratios of metal: ligand (1:1) and characterized by elemental ...

A new tetradentate bis-benzimidazole based diamide ligand, N-butyl-N,N’-bis-(2-methylbenzimidazolyl)-benzene-1,3-dicarboxamide[B–GBBA] has been synthesized and utilized to prepare Cu (II) complexes of general composition [Cu(B-GBBA)X2].nH2O where X is an exogenous anionic ligand (X = Cl, NO3). These complexes were prepared in the molar ratios of metal : ligand (1 : 1) and characterized by eleme...

We herein present a novel platform of well-controlled ordered and disordered nanopatterns positioned with a cyclic peptide of arginine-glycine-aspartic acid (RGD) on a bioinert poly(ethylene glycol) background, to study whether the nanoscopic order of spatial patterning of the integrin-specific ligands influences osteoblast adhesion. This is the first time that the nanoscale order of RGD ligand...

[((Ar) PMI)Mo(CO)4 ] complexes (PMI=pyridine monoimine; Ar=Ph, 2,6-di-iso-propylphenyl) were synthesized and their electrochemical properties were probed with cyclic voltammetry and infrared spectroelectrochemistry (IR-SEC). The complexes undergo a reduction at more positive potentials than the related [(bipyridine)Mo(CO)4 ] complex, which is ligand based according to IR-SEC and DFT data. To pr...