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Tetrahedral Co(II) Coordination in α-Type Cobalt Hydroxide: Rietveld Refinement and X-ray Absorption Spectroscopy
Abstract
We report a Rietveld refinement analysis and X-ray absorption study on a green-color Cl(-)-intercalated alpha-type cobalt hydroxide phase. The refinement clearly demonstrated that one-fifth to one-sixth of the Co(II) at octahedral sites was replaced by pairs of tetrahedrally coordinated Co(II) on each side of the hydroxide plane, represented by a structural formula of [Co(octa)(0.828)Co(tetra)(0.348)(OH)2](0.348+)Cl(0.348).0.456H2O. X-ray absorption spectroscopy also indicated that the divalent cobalt were in local neighboring environments of both octahedral and tetrahedral coordination. Furthermore, UV-vis spectroscopic measurements elucidate the typical green/blue color of an alpha-type cobalt hydroxide.
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Correlative operando microscopy of oxygen evolution electrocatalysts
Mefford, J. T., Akbashev, A. R., Kang, M., Bentley, C. L., Gent, W. E., Deng, H. D., Alsem, D. H., Yu, Y.-S., Salmon, N. J., Shapiro, D. A., et al. (2021) · Nature · doi:10.1038/s41586-021-03454-x · Cited by 699
Tatarchuk, S. W., Choueiri, R. M., Medvedeva, X. V., Chen, L. D., & Klinkova, A. (2021) · Chemosphere · doi:10.1016/j.chemosphere.2021.130550 · Cited by 56
Metadata
- Authors
- Ma, R., Liu, Z., Takada, K., Fukuda, K., Ebina, Y., Bando, Y., & Sasaki, T.
- Venue
- Inorganic Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-04-15
- Volume
- 45
- Issue
- 10
- Pages
- 3964-3969
- ISSN
- 0020-1669 (ISSN-L)
- 1520-510X
- OpenAlex
- W2087773179
- Cited by
- 231
- References
- 0
- FWCI
- 4.77
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Tetrahedral Co(II) Coordination in α-Type Cobalt Hydroxide: Rietveld Refinement and X-ray Absorption Spectroscopy. https://app.cochat.ai/papers/10.1021/ic052108r
- The paper
- Ma, R., Liu, Z., Takada, K., Fukuda, K., Ebina, Y., Bando, Y., & Sasaki, T. (2006). Tetrahedral Co(II) Coordination in α-Type Cobalt Hydroxide: Rietveld Refinement and X-ray Absorption Spectroscopy. Inorganic Chemistry. https://doi.org/10.1021/ic052108r
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