Barium Azacryptand Sodide, the First Alkalide with an
Alkaline Earth Cation, Also Contains a Novel Dimer, (Na<sub>2</sub>)<sup>2-</sup>
Mikhail Y. Redko
Rui H. Huang
James E. Jackson
James F. Harrison
James L. Dye
10.1021/ja027241m.s001
https://acs.figshare.com/articles/journal_contribution/Barium_Azacryptand_Sodide_the_First_Alkalide_with_an_Alkaline_Earth_Cation_Also_Contains_a_Novel_Dimer_Na_sub_2_sub_sup_2-_sup_/3644742
The first barium sodide, with stoichiometry Ba<sup>2+</sup>(H<sub>5</sub>Azacryptand[2.2.2]<sup>-</sup>)Na<sup>-</sup>·2MeNH<sub>2</sub>, was
synthesized by the reaction of Ba, Na, and H<sub>6</sub>Azacryptand[2.2.2] in NH<sub>3</sub>−MeNH<sub>2</sub> solution. It was
characterized by X-ray crystallography, <sup>23</sup>Na MAS NMR, hydrogen evolution, DSC, optical spectroscopy,
and magnetic susceptibility. This is the first sodide in which the sodium anions form (Na<sub>2</sub>)<sup>2-</sup> 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.
2003-01-29 00:00:00
Na 2
NH
sodium anions form
Alkaline Earth Cation
MeNH
sodide
DSC
Barium Azacryptand Sodide
23 Na MAS NMR