首页> 外文期刊>The Journal of Chemical Physics >ULTRAVIOLET PHOTOELECTRON SPECTROSCOPY OF MOLYBDENUM AND MOLYBDENUM MONOXIDE ANIONS
【24h】

ULTRAVIOLET PHOTOELECTRON SPECTROSCOPY OF MOLYBDENUM AND MOLYBDENUM MONOXIDE ANIONS

机译:钼和一氧化钼阴离子的紫外光电子光谱

获取原文
获取原文并翻译 | 示例
           

摘要

The 351 nm photoelectron spectra of Mo- and MoO- have been measured. The electron affinity of atomic molybdenum is 0.748(2) eV and that of molybdenum monoxide is 1.290(6) eV. The term energies of several MoO electronic states not previously observed are obtained and compared with ab initio predictions. The ground state of MoO is confirmed to have (5) Pi symmetry and the term energy of the (3) Pi excited state, 10 179(20) cm(-1), closely matches calculations. The ground state of MoO- is a (4) Pi State with a vibrational frequency of 810(40) cm(-1). The first excited state of molybdenum monoxide is tentatively assigned as a (3) Delta state with T-0 = 621(50) cm(-1). At least one state, possibly a (5) Sigma(-) state, lies 8000(500) cm(-1) above the ground state, and a (5) Sigma(+) State is observed at 11 590(60) cm(-1) above the ground state. The separations of spin-orbit levels for the MoO X (5) Pi, (3) Pi, and (3) Delta states are 169(30), 410(20), and -720(20) cm(-1) respectively. The vibrational frequencies of the (3) Pi and (3) Delta states are found to be 600(20) and 1000(20) cm(-1), respectively. These observations give new insight into the Mo-O bond. (C) 1996 American Institute of Physics. [References: 25]
机译:已测量了Mo-和MoO-的351 nm光电子能谱。原子钼的电子亲和力为0.748(2)eV,一氧化钼的电子亲和力为1.290(6)eV。获得了先前未观察到的几种MoO电子状态的术语能量,并将其与从头算起的预测进行了比较。证实MoO的基态具有(5)Pi对称性,并且(3)Pi激发态的能量10 179(20)cm(-1)的项与计算非常匹配。 MoO-的基态是(4)Pi态,振动频率为810(40)cm(-1)。一氧化钼的第一激发态暂定为T-0 = 621(50)cm(-1)的(3)δ态。至少一个状态(可能是(5)Sigma(-)状态)位于基态上方8000(500)cm(-1),并且在11 590(60)cm处观察到(5)Sigma(+)状态(-1)高于地面状态。 MoO X(5)Pi,(3)Pi和(3)Delta状态的自旋轨道能级间隔分别为169(30),410(20)和-720(20)cm(-1) 。发现(3)Pi和(3)Delta态的振动频率分别为600(20)和1000(20)cm(-1)。这些观察为Mo-O键提供了新的见解。 (C)1996年美国物理研究所。 [参考:25]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号