ja027241m_si_003.pdf (44.83 kB)

Barium Azacryptand Sodide, the First Alkalide with an Alkaline Earth Cation, Also Contains a Novel Dimer, (Na2)2-

Download (44.83 kB)
journal contribution
posted on 29.01.2003 by Mikhail Y. Redko, Rui H. Huang, James E. Jackson, James F. Harrison, James L. Dye
The first barium sodide, with stoichiometry Ba2+(H5Azacryptand[2.2.2]-)Na-·2MeNH2, was synthesized by the reaction of Ba, Na, and H6Azacryptand[2.2.2] in NH3−MeNH2 solution. It was characterized by X-ray crystallography, 23Na MAS NMR, hydrogen evolution, DSC, optical spectroscopy, and magnetic susceptibility. This is the first sodide in which the sodium anions form (Na2)2- dimers. Previous theoretical predictions were verified by a calculation of the potential energy curve for the dimer in the field of the surrounding charges, whose positions were determined from the crystal structure.