Abstract Monohydrides of the group VI–VIII transition metals Cr, Mn, Fe, Co, Ni, Mo, Rh and Pd are synthesised under high hydrogen pressures and elevated temperatures and studied by inelasticneutron scattering (INS) at ambient pressure and low temperatures. In the measured INS spectra, the energy of the main optical H peak exhibits a strong monotonic increase as a function of the nearest hydrogen–metal
摘要 VI-VIII 族过渡金属 Cr、Mn、Fe、Co、Ni、Mo、Rh 和 Pd 的一氢化物是在高氢压和高温下合成的,并在环境压力和低温下通过非弹性中子散射 (INS) 进行了研究。在测量的 INS 光谱中,主光学 H 峰的能量表现出强烈的单调增加,分别作为 3d 和 4d 金属氢化物中最近氢金属距离的函数。FCC NiH 和 PdH 的光谱在能量转移高于光学氢振动的基带时表现出强烈的各向异性,而 FCC PdD 的光谱在第二个光学 D 带的能量上没有显示出显着的方向依赖性。
Mikheeva, V. I.; Kost, M. E.; Shilov, A. L., Russian Journal of Inorganic Chemistry, 1978, vol. 23, p. 656 - 661
作者:Mikheeva, V. I.、Kost, M. E.、Shilov, A. L.
DOI:——
日期:——
Laser photoelectron spectroscopy of CrH<sup>−</sup>, CoH<sup>−</sup>, and NiH<sup>−</sup>: Periodic trends in the electronic structure of the transition‐metal hydrides
作者:Amy E. Stevens Miller、C. S. Feigerle、W. C. Lineberger
DOI:10.1063/1.453214
日期:1987.8
The laser photoelectron spectra of CrH−, CoH−, and NiH− and the analogous deuterides are reported. The spectra are interpreted using a qualitative description of the electronic structure for the hydrides. This model is used to assign off-diagonal transitions in the photodetachment to low-spin states of the neutrals, and diagonal transitions to high-spin states of the neutrals. These data are used to identify the high-spin states of CoH and NiH; several other states of CrH, CoH, and NiH are also identified. Periodic trends in the bond lengths, vibrational frequencies, and electronic excitation energies for the MnH through NiH molecules are examined. Electron affinities are reported for CrH (0.563±0.010 eV), CoH (0.671±0.010 eV), and NiH (0.481±0.007 eV), and the corresponding deuterides.