An unusually water-poor 5,5 %26apos;-azobistetrazolate of dysprosium: stabilization of a nitrogen-rich heterocycle by a minimum of hydrogen bonds

作者：Knoll Christian; Mueller Danny; Giester Gerald; Ofner Johannes; Lendl Bernhard; Weinberger Peter^*; Steinhauser Georg

来源：New Journal of Chemistry, 2013, 37(12): 3840-3844.

DOI：10.1039/c3nj00492a

In inorganic 5,5%26apos;-azobistetrazolate (C2N102-; 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)](2)ZT(3), which constitutes a unique exception to the above rule. We used supercritical CO2 as an unconventional desiccant in a straightforward metathesis reaction without abstaining from the benefits aqueous chemistry offers. It caused the crystallization of the title compound with a complex system of H-bonds between [Dy(H2O)(8)](3+) and ZT(2-) that involves almost every N-atom of the ZT(2-) anions as H-bond acceptors, which sufficiently stabilizes the energetic ZT despite the lack of lattice H2O or a coordinative bond to the metal ion.

• 出版日期2013