344926-34-7Relevant academic research and scientific papers
From neutral Zn4O4 clusters to a cationic ZnO dimer in solution
Driess, Matthias,Merz, Klaus,Schoenen, Robert
, p. 2133 - 2136 (2007)
The suitability of the tetrameric ZnO aggregates [(iPrO)ZnMe]4 (1a) and [(Me3SiO)ZnMe]4 (1b) as potential sources for molecular models of low-coordinated zinc centers and active sites on zinc oxide catalysts is reported. The formation and fate of the resulting cationic Zn 4O4 degradation products by reaction of 1a and 1b with B(C6F5)3 in the presence of different organic donor substrates have been studied by means of ESI mass spectrometry. While 1a affords the cationic monozinc complexes [MeZn(L)]+ (2a: L = THF, 2b: 15-c-5, 2c: DMAP), the cluster 1b furnishes in the presence of DMAP [MeZn(OSiMe3)2Zn(DMAP)2]+ (3), the first dimeric ZnO aggregate cation in solution, and the [MeB(C6F 5)3] anion. Additionally, the neutral dinuclear ZnO aggregate [(Me3SiO)-Zn(C6F5)thf]2 (4) results from Me/C6F5 exchange reactions as the final product, which has been characterized by NMR spectroscopy and a single-crystal X-ray diffraction analysis.
