The Tb atom of the title compound, TbHP(2)O(7)·4H(2)O, is coordinated by the O atoms of three symmetrically independent water mol-ecules and by five O atoms belonging to HP(2)O(7) (-) groups. The TbO(8) polyhedra are inter-connected by the diphospate anions, forming a three-dimensional network which is additionally stabilized by O-H⋯O hydrogen bonding between water mol-ecules and O atoms of the...

Anhydrous (99.99%) TbCl3 was obtained from Aldrich (Milwaukee, WI, USA) and used without further purifications. It was handled in an argon-filled dry box with a water content < 2 ppm and an oxygen content < 1 ppm. A 166Ho radiation source (2.27 MBq) was used because of its desirable decay characteristics (t1/2 = 1200y, up to 8 photons per disintegration, more than 10% branching ratio). A multi-...

Objectives: In previous studies the therapeutic effects of Nigella sativa have been demonstrated on asthmatic animals. In the present study, the preventive effect of single dose of alpha-hederin, its active constituent, has been evaluated on lung inflammation and some inflammatory mediators in lungs of ovalbumin sensitized rat in order to elicit its mechanism. Materials and methods: Forty rats ...

Numerous materials have been proposed for thermoluminescence dosemeter, and the example of highest sensitivity is cited as magnesium orthosilicate doped with terbium (Mg2SiO4:Tb). Nevertheless, the material is currently not commercially attractive because the sensitivity varies greatly with synthesis techniques. This is a multi-parameter problem, and the current work explores some of the condit...

The delayed lanthanide luminescence of the terbium [Tb(III)] diaryl-urea complex 1xTb is significantly enhanced upon sensing of dihydrogenphosphate (H2PO4(-)) in CH3CN, which occurs through multiple anion binding through hydrogen bonding interactions and potential metal ion coordination to Tb(III).

Two new mononuclear cationic complexes in which the TbIII ion is bis-chelated by the tripodal alcohol 1,1,1-tris-(hy-droxy-meth-yl)propane (H3LEt, C6H14O3) were prepared from Tb(NO3)3·5H2O and had their crystal and mol-ecular structures solved by single-crystal X-ray diffraction analysis after data collection at 100 K. Both products were isolated in reasonable yields from the same reaction mixt...