Metal-Promoted Exopolyhedral Substitution of Terminal Hydrogen Atoms in theCloso-Decaborate Anion [B10H10]2-in the Presence of Copper(II): Formation of the Substituted Derivative [2-B10H9OH]2-

Copper(II) complexation of the [B10H10](2-)anion has been studied in the presence of 2,2 '-bipyridyl (bipy) in organic solvents. The reaction between CuCl, bipy, and (Et3NH)[Ag[B10H10]] in DMF leads to copper(II) complex [Cu-2(bipy)(4)(mu-CO3)][B10H10]center dot 2DMF center dot H2O. The copper complexation reaction has been performed under the redox conditions Cu(I) -> Cu(II) in the presence of silver(I) compounds. When [Cu-2(bipy)(4)(mu-CO3)][B10H10]center dot 2DMF center dot H2O has been heated in DMSO, the monosubstituted derivative [2-B10H9OH](2-)has been isolated as complex [Cu-2(bipy)(4)(mu-CO3)][2-B10H10O0.17]center dot 2DMSO center dot H2O consisting of the [B10H10](2-)anion and its monosubstituted derivative [2-B10H9OH](2-)cocrystallized in the 0.83:0.17 ratio. The metal-promoted process of exopolyhedral substitution of terminal hydrogen atoms in the [B10H10](2 not sign )anion in the presence of Cu(II) compounds has been discussed. Complexes synthesized have been studied by elemental analysis, IR,H-1 and(11)B NMR spectroscopy; the X-ray diffraction studies were performed for [Cu-2(bipy)(4)(mu-CO3)][B10H10]center dot 2DMF center dot H2O and [Cu-2(bipy)(4)(mu-CO3)][2-B10H10O0.17]center dot 2DMSO center dot H2O.

Automated summary

The copper(II) complexation of [B10H10](2-) anion was studied in organic solvents in the presence of 2,2 '-bipyridyl (bipy). The reaction involved CuCl, bipy, and (Et3NH)[Ag[B10H10]] in DMF to form a copper(II) complex. Heating the resulting complex in DMSO led to the isolated monosubstituted derivative [2-B10H9OH](2-) in a 0.83:0.17 ratio. Analysis techniques included elemental analysis, IR, H-1 and (11)B NMR spectroscopy, as well as X-ray diffraction studies for the complexes.