We report an open-shell species containing xenon, HXeO ((2)Sigma), prepared by UV photolysis of H(2)O/Xe or N(2)O/HBr/Xe solid mixtures at 7 K and subsequent thermal mobilization of oxygen atoms at >/=30 K. The H-Xe stretching absorption of HXeO in solid Xe is at 1466.1 cm(-1), and it shifts to 1070.3 cm(-1) upon deuteration. The extensive ab initio calculations indicate that HXeO is intrinsically stable, owing to significant ionic and covalent contributions to its bonding. The formation of HXeO ((2)Sigma) radicals in these experiments suggests extensive stabilization and thermal mobility of singlet ((1)D) oxygen atoms in solid Xe and holds promises for the stability of the HKrO and HArO species.
A novel noble-gas compound, HXeOXeH, is identified using IR spectroscopy, and it seems to be the smallest known neutral molecule with two noble-gas atoms. HXeOXeH is prepared using, for example, UV photolysis of water in solidxenon and subsequent annealing at 40-45 K. The experimental observations are fully supported by extensive quantum chemical calculations. A large energy release of 8.3 eV is computationally
使用红外光谱鉴定了一种新型惰性气体化合物 HXeOXeH,它似乎是已知最小的具有两个惰性气体原子的中性分子。HXeOXeH 是使用例如固体氙中的水的 UV 光解和随后在 40-45 K 下退火制备的。大量的量子化学计算完全支持实验观察。HXeOXeH 分解为 2Xe + H2O 全局能量最小值的计算预测为 8.3 eV 的大能量释放。HXeOXeH 可能代表着可能制备 (Xe-O)n 链的第一步,它可能与地球上的“缺少氙”问题有关。