The Hg atoms in the crystal structure of the title compound, (CH(6)N(3))(2)[HgBr(4)], are tetra-hedrally coordinated by four Br atoms and the resulting [HgBr(4)](2-) tetra-hedral ions are linked to the [C(NH(2))(3)](+) ions by bromine-hydrogen bonds, forming a three-dimensional network. In the structure, the anions are located on special positions. The two different Hg⋯Br distances of 2.664 (1)...

The present review describes the current status of synthetic five and six-membered cyclic peroxides such as 1,2-dioxolanes, 1,2,4-trioxolanes (ozonides), 1,2-dioxanes, 1,2-dioxenes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes. The literature from 2000 onwards is surveyed to provide an update on synthesis of cyclic peroxides. The indicated period of time is, on the whole, characterized by the devel...

Rev Esp Cardiol 2004;57(12):1245-9 1245 At the Congress on Cardiovascular Diseases held in Madrid in October, 2004, we informed the Board of Directors of the Spanish Society of Cardiology (SSC) and the General Assembly of members about the journal’s recent activities. In addition we held our annual meeting with the Editorial and Advisory Committees of REVISTA ESPAÑOLA DE CARDIOLOGÍA. At this me...

The structure of the title compound, C(12)H(16)N(5) (+)·I(-), shows that the methyl-ation reaction with CH(3)I occurred at the imine N atom at position 5 of the 3,6,7,8a-tetra-hydro-2H-diimidazo[1,2-c:1',2'-e]pyrido[1,2-a][1,3,5]triazine system. In the cation, the sp(3)-hybridized C atom belonging to the fused dihydro-pyrine and dihydro-1,3,5-triazine rings deviates by 0.514 (3) Å from the best...

drawbacks, such as increasing the dosage, the administration frequency and the resultant occurrence of side effects. Furthermore, as the rate-limiting step in the absorption process for poorly water-soluble drugs is the dissolution rate of such drugs in the gastrointestinal fluids rather than the rapidity of their diffusion across the gut wall, it is important to improve the oral bioavailabilit...