Создатели ядерного щита

The first example of a crystallographically established bis-adduct of tridentate 2,2':6',2:6',2"'-quaterpyridine (qtpy) of formula [Fe(qtpy)(2)][ClO4](2) has been obtained by treating an aqueous solution of iron(II) perchlorate with the ligand in the presence of triethylamine

¿Cómo ayuda la Espectroscopía Láser al estudio de las atmósferas?

Presentado en el IV Curso de Iniciación a la Investigación en Estructura de la Materia: Desde las partículas subatómicas hasta los compuestos moleculares (Instituto de Estructura de la Materia, CSIC, 28-30 de Marzo de 2007)

Reduction of Ammonium Perrhenate by CO: a Convenient Method for Preparing Re2(CO)10

International audienceDecacarbonyldirhenium(0), Re2(CO)10, was obtained in yields as high as 69% by carbonylation of ammonium perrhenate(VII) at 250-290 °C with CO at about 150 atm pressure in toluene as medium

Reduction of Ammonium Perrhenate by CO: a Convenient Method for Preparing Re2(CO)10

International audienceDecacarbonyldirhenium(0), Re2(CO)10, was obtained in yields as high as 69% by carbonylation of ammonium perrhenate(VII) at 250-290 °C with CO at about 150 atm pressure in toluene as medium

Reactivity of molecules containing element-element bonds. 2. Transition elements

International audienc

Topotactic reversible phase transition between room temperature and a low-temperature modification in the MCl3(THF)3 system

Both single crystals of VCI3(THF) 3 as well as isotypic cocrystals of the composition MC13(THF)3, M = Ti/V ~ 1/3, undergo a topotactic reversible phase transition to a hitherto unknown lowtemperature modification. The close relationship between this new structure and the room-temperature phase determined by Cotton et al. is discussed from the molecular and the intermolecular point of view: Both modifications are built up by conformationally very similar molecules which change their arrangement during the phase transition. Lattice energy calculations confirm that these two alternative arrangements correspond to minima of almost the same packing energy