Abstract
The copper(I) complex [Cu(NH 3 ) 2 ] + has been formed in situ during the ferrierite framework constitution. The structure of the material has been determined by single-crystal X-ray diffraction. The obtained formula is [Cu 0.34 (NH 3 ) 0.68 ] 0.34+ (Si 35.66 Al 0.34 O 72 ) 0.34- .(C 3 H 9 N) 2 (NH 3 ) 1.6 . Along the 10-ring channel is housed a row of linear [Cu(NH 3 ) 2 ] + complex. The copper atom is situated in an inversion center and bonded to two NH 3 molecules at 2.21 A. The compound that is white and diamagnetic as synthesized becomes blue and paramagnetic after heating to 800 °C and cooling to room temperature. The oxidation of Cu(I) to Cu(II) has been corroborated by magnetic susceptibility measurements. This material behaves as a good catalyst in the cyclopropanation of alkenes and sulfide oxidation reactions. It can be recovered and reused, retaining most of its catalytic activity.
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