A further investigation of the polarized single-crystal electronic absorption spectrum of [AsPh4][CrOCl4]
作者:David Collison
DOI:10.1039/dt9890000001
日期:——
Polarized single-crystal electronicabsorption spectra have been recorded for [AsPh4][CrOCl4] at 77 and 4.2 K in the energy range 4 000–40 000 cm–1. Three band systems have been identified and have been assigned to the three possible d–d transitions in C4v symmetry. The previously unreported band system originating at ca. 20 000 cm–1 has been assigned to the one-electron promotion dxy→dz2.
极化单晶电子吸收光谱已被记录为[ASPH 4 ] [CrOCl 4 ]在77和4.2 K的能量范围4 000-40000厘米-1。已经确定了三个频带系统,并已将其分配给C 4 v对称性的三个可能的d – d跃迁。始于ca的先前未报告的波段系统。20000 cm –1已分配给单电子促进d xy → d z 2。
Experimental and Theoretical Vibrational Study of the Oxotetrachlorochromate(V) Anion in [AsPh4][CrOCl4]
作者:M. L. Roldán、S. A. Brandán、E. L. Varetti、A. Ben Altabef
DOI:10.1002/zaac.200600219
日期:2006.11
Infrared and Raman spectra were obtained for tetraphenylarsonium oxotetrachlorochromate(V), [AsPh4][CrOCl4]. Equilibrium geometry and vibrational frequencies for the anion, CrOCl4−, were studied employing Density Functional Theory (DFT) methods. A comparative theoretical study was performed in order to determine the best level of theory and basis set to reproduce the experimental structure parameters
Electron spin resonance spectrum of tetraphenylarsonium tetra-chloro-oxochromate(V)
作者:C. David Garner、Ian H. Hillier、Frank E. Mabbs、Carol Taylor、Martyn F. Guest
DOI:10.1039/dt9760002258
日期:——
The single-crystal e.s.r. parameters for [AsPh4][CrCl4O] giving g∥ 2.006 ± 0.002 and g⊥ 1.979 ± 0.002 are reported (where g∥ coincides with the Cr–O direction). Solution measurements in CH2Cl2 give g 1.988 ± 0.001 and ā 18.1 × 10–4 cm–1, and the addition of excess of [NEt4] Cl to these solutions results in an additional e.s.r. signal at g 1.970 ± 0.001 which is attributed to the [CrCl5O]2– species