A new quinoxaline-substituted vicinal dioxime ligand containing bis(12-diazacrown-4) units (H2L) was synthesized by the reaction of cyanogen di-N-oxide with compound 4. Mononuclear Ni and Cu complexes with a metal: ligand ratio of 1:2 for H2L and a trinuclear Cu II complex were also synthesized. The mononuclear Cu species coordinated to two Cu ions through the deprotonated oximate oxygens to yi...

The first mononuclear anionic erbium complex [Er(hfac)4]− (hfac = hexafluoroacetylacetone) with an organic ammonium cation [(CH3)4N+] as the counterion was synthesized and structurally magnetically characterized. coordination geometries around Er ions are square antiprisms pseudo-D4d symmetry. shows distinct field-induced slow magnetization relaxation, which is described by a combination of Orb...

results the median level of pbmcs htert mrna in survivors increased with treatment time and was significantly higher than the corresponding level in non-survivors after 14 days of treatment (p < 0.001). subgroup analyses showed that the levels of pbmcs htert mrna were remarkably higher in patients with acute-on-chronic liver failure than in those with chronic liver failure (p < 0.05). in patien...

background: nanoparticles have become one of the leading technologies over the past two years. the extensive use of nanoparticles has raised great concern about their occupational fate and biological effects. with an increase in the production and use of nanomaterial, it is more likely to get exposed to them occupationally and environmentally. objective: to assess the toxicity of silver nanopar...

The first crystal structure of  [Cu(terpy)2](PF6 )2 , where terpy=2,2':6',2"-terpyridine is reported. Green crystals of  [Cu(terpy)2](PF6 )2 were grown by ether diffusion into an acetonitrile solution of the complex. Crystal structure of this complex is tetragonal ( space group: P21c ...

A new synthetic method has been developed for the preparation of unexpected emissive iridium(III) complexes ( and B ), directly obtained from established [Ir(ppy) 2 (µ-Cl)] dimer, under reaction conditions in which...

We examined human immunodeficiency virus (HIV) production in cultured mononuclear cells from 36 seropositive homosexual males. Production was detected by using an HIV p24 antigen ELISA assay in blood mononuclear cells in 54% of asymptomatic, 71% of acquired immunodeficiency syndrome (AIDS)-related complex, and 100% of AIDS patients. When the peripheral blood mononuclear cells were separated int...

Thiocarbohydrazone-based catalysts feature ligands that are potentially electrochemically active. From the synthesis point of view, these can be easily tailored, opening multiple strategies for optimization, such as using different substituent groups or metal substitution. In this work, we show possibility a new strategy, involving nuclearity system, meaning number centers. We report and charac...