Direct contact vs. solvent-shared ion pairs in nicl2 electrolytesmonitored by multiplet effects at the ni(ii) l-edge x-ray absorptionDOC_XNOTE=Published by BESSY, Germany in collaboration with LawrenceBerkeley National Laboratory staff.
We investigate the local electronic structure in aqueous NiCl{sub 2} electrolytes by Ni L edge x-ray absorption spectroscopy. The experimental findings are interpreted in conjunction with multiplet calculations of the electronic structure and the resulting spectral shape. In contrast to the situation in the solid, the electronic structure in the electrolyte reflects the absence of direct contact Ni-Cl ion pairs. We observe a systematic change of the intensity ratio of singlet and triplet-related spectral features as a function of electrolyte concentration. These changes can be described theoretically by a changed weight of transition matrix contributions with different symmetry. We interpret these findings as being due to progressive distortions of the local symmetry induced by solvent-shared ion pairs.
- Research Organization:
- COLLABORATION - BESSY,Germany
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 903505
- Report Number(s):
- LBNL-62645; TRN: US200720%%395
- Journal Information:
- Journal of Physical Chemistry B, Vol. 111, Issue 17; Related Information: Journal Publication Date: 2007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetic structures of FeTiO{sub 3}-Fe{sub 2}O{sub 3} solid solution thin films studied by soft X-ray magnetic circular dichroism and ab initio multiplet calculations
Combined multiplet theory and experiment for the Fe 2p and 3p XPS of FeO and Fe2O3