A specific 2,4-disubstituted-adamantane interaction with plasma-grown aluminium oxide. An inelastic-electron-tunnelling spectroscopy study
作者:E. W. Meijer、M. C. Raas、P. N. T. van Velzen
DOI:10.1002/recl.19871061002
日期:——
The interaction of several mono- and disubstituted adamantanes with plasma-grown aluminium oxide has been studied using inelastic-electron-tunnelling (IET) spectroscopy. The IET spectra evidence the chemisorption of 2,4-adamantanedione (1) onto the aluminium oxide surface as the carboxylate anion of bicyclic acid ketone 2, which is formed by ring opening of the β-diketone. In the case of 4-hydroxy-2-adamantanone
使用非弹性电子隧穿(IET)光谱研究了几种单取代和双取代的金刚烷与等离子体生长的氧化铝的相互作用。IET光谱证明2,4-金刚烷二酮(1)作为双环酸酮2的羧酸根阴离子在氧化铝表面上的化学吸附,这是由β-二酮的开环形成的。在4-羟基-2-金刚烷酮(3)的情况下,未观察到相应的双环酸(4)的开环。3通过缩合被化学吸附为烷氧基铝。由于1-金刚烷醇,2-金刚烷醇和2-金刚烷酮不吸附在氧化铝上,因此似乎需要通过氧化铝和酮基之间的额外氢键来稳定。即使5-羟基-2-金刚烷酮也未键合至表面,表明必须与氧化铝进行特定的2,4-二取代的金刚烷双齿相互作用。