In inorganic 5,50-azobistetrazolate (C2N10 2 ; ZT) compounds, the energetic ZT moiety is usually stabilized by H-bonds to lattice H2O and/or coordination of an N-atom of the tetrazole ring to the metal ion. Here we present the synthesis and characterization of a novel, salt-like compound, [Dy(H2O)8]2ZT3, which constitutes a unique exception to the above rule. We used supercritical CO2 as an unc...

OBJECTIVE Insulin may play important roles in brain metabolism. Proton magnetic resonance spectroscopy ((1)H-MRS) of the central nervous system gives information on neuronal viability, cellular energy, and membrane status. To elucidate the specific role of insulin action in the brain, we estimated neurometabolites with (1)H-MRS and assessed their regulation by insulin infusion and their relatio...

Reaction of freshly precipitated Mn(OH)2−2x(CO3)x · yH2O, adipic acid and phenanthroline in CH3OH/H2O afforded a new dinuclear Mn(II) complex, Mn2(phen)2(H2O)2(C6H8O4)2 1, aside the known [Mn(phen)2(H2O)(C6H8O4)]·7H2O 2. Single crystal X-ray analyses showed that complex 1 consists of the centrosymmetric dinuclear molecules resulting from two [Mn(phen)(H2O)] moities bridged by two twisted triden...

The thermodynamic stabilities and IR spectra of the three water clusters (H2O)20, (H2O)54,, and (H2O)100 are studied by quantum-chemical computations. After full optimization of the (H2O)20,54,100 structures using the hybrid density functional B3LYP together with the 6-31+G(d,p) basis set, the electronic energies, zero-point energies, internal energies, enthalpies, entropies, and Gibbs free ene...

the mononuclear gd(iii) complex, [gd(l)3(h2o)5] (where l is alizarin yellow r (nac13h8n3o5)), has been prepared in h2o under reflux condition. the gd(iii) complex has been characterized by elemental analysis and spectroscopic methods (uv–vis and ft–ir). the gd2o3 nanoparticles were prepared by the calcination of the gd(iii) complex in air at different temperatures up to 600 °c for 2 h. the calc...

the structural and energetic characteristics of o3–h2o complexes have been investigated by means of b3lyp, mp2, mp4(sdtq), ccsd(t) and qcisd(t) methods in conjunction with the aug-cc-pvdz and aug-cc-pvtz basis sets. six conformers were found for the o3–h2o complex. two different intermolecular interactions were expected to participate in the formation of complexes, namely conventional o∙∙∙h hyd...

OBJECTIVE To assess the ability of a decremental trial of positive end-expiratory pressure (PEEP) to identify an optimal PEEP level that maintains oxygenation after a lung-recruitment maneuver. DESIGN Prospective clinical trial. SETTING Surgical intensive care unit of a university hospital. PATIENTS Twenty sedated patients with acute lung injury and/or acute respiratory distress syndrome,...