common variable immunodeficiency (cvid) is the most common symptomatic primary antibody deficiency, characterized by reduced serum immunoglobulins levels and increased susceptibility to recurrent pyogenic infections. in this study, we evaluated cd40 ligand expression on stimulated versus unstimulated t-helper lymphocytes of nine common variable immunodeficient patients in comparison with fiftee...

in this study a new simple selective and sensitive spectrophotometric procedure for determination of fe(iii) is described. it is based on the formation of a colored complex between ferric iron and ethyl maltol, a strong and highly selective ligand for fe(iii). after mixing sample and reagent, and incubating at the room temperature, fe(iii)-ethyl maltol complex was extracted with different solve...

A new unsymmetric thioether diamine N - ( 2 - ( 2 - aminophenylthio) ethyl) benzene - 1 , 2 - diamine was prepared through the nucleophilic substitution of cysteaminium chloride with 1 - chloro - 2 - nitrobenzene and then the nitro groups of prepared compuond converted to the amine by zinc powder and ammonium chloride. Then, unsymmetric Schiff bass ligand 2 - ((( 2 - (( 2 - (( 2 - (( 2 - hydrox...

This study aims to design some dual-target anticancer candidates, capable to act as an alkylating agent as well as a thymidylate synthase (TS) inhibitor. The designed scaffold is a combination of nucleobase, amino acid and aziridine structures. The candidates are docked into TS and three DNA double strand structures and evaluated based on their binding interaction energies and ligand efficienci...

Single-crystal to single-crystal solid/gas reactivity and catalysis starting from the precursor sigma-alkane complex [Rh(Cy2PCH2CH2PCy2)(h h-NBA)][BAr4] (NBA 1⁄4 norbornane; Ar 1⁄4 3,5-(CF3)2C6H3) is reported. By adding ethene, propene and 1-butene to this precursor in solid/gas reactions the resulting alkene complexes [Rh(Cy2PCH2CH2PCy2)(alkene)x][BAr F 4] are formed. The ethene (x 1⁄4 2) comp...

Compounds of main-group elements such as silicon are attractive candidates for green and inexpensive catalysts. For them to compete with state-of-the-art transition-metal complexes, new reactivity modes must be unlocked controlled, which can achieved through strain. Using a tris(2-skatyl)methylphosphonium ([TSMPH3]+) scaffold, we prepared the strained cationic silane [TSMPSiH]+. In stark contra...

Ru3(μ-CO)3(CO)5-type clusters bound to the dinucleating PNNP expanded pincer ligand are described. Deprotonation of a methylene linker gives an anionic triruthenium cluster featuring dearomatized ligand. Interestingly, H2 activation by resulting appears not proceed through metal-ligand cooperativity.

A novel Schiff-base ligand (L: 2-[(4-chloro-2-oxo-2H-chromen-3-ylmethylene)-amino] propionic acid) was prepared from the reaction of 4-chloro3-formylcoumarin and alanine amino acid. Copper (II) complex was synthesized from the reaction of the ligand with Cu (OAc)2. H2O in ethanol. The ligand and its metal complex were characterized by elemental analysis (CHN), ICP, thermal analysis (TGA), Fouri...

Zinc (II) complex, [Zn(25-MBTSC)2I2] (1), where (25-MBTSC = (E)-2-(2,5-dimethoxybenzaldehyde) thiosemicarbazone, has been synthesized from the reaction of ZnI2 with 25-MBTSC in methanol as solvent at 25 ºC. It was characterized by elemental analysis (CHN) and is confirmed by single-crystal X-ray diffraction analysis. The complex 1 crystallizes in a triclinic system, with space group P-ī, having...