Tricapped trigonal prismatic molecular geometry

Tricapped trigonal prismatic molecular geometry
ExamplesReH2−
9
Point groupD3h
Coordination number9
μ (Polarity)0

In chemistry, the tricapped trigonal prismatic molecular geometry describes one possible shape of compounds where nine atoms, groups of atoms, or ligands are arranged around a central atom, defining the vertices of a triaugmented triangular prism (a trigonal prism with an extra atom attached to each of its three rectangular faces).

It is very similar to the capped square antiprismatic molecular geometry, and there is some dispute over the specific geometry exhibited by certain molecules. For example, lanthanoid nine-coordinate 3+ complexes do not have a rigidly defined molecular geometry, meaning their assignment to a singular molecular geometry is problematic. These complexes have significant both tricapped trigonal prismatic and capped square antiprismatic character to their geometries

Examples

References

  1. ↑ "4.1.4: Coordination Numbers and Structures". Chemistry LibreTexts. 2021-12-20. Retrieved 2024-02-02.
  2. ↑ Alanís-Manzano, Emiliano Isaías; León-Pimentel, C. I.; Maron, Laurent; Ramírez-Solís, Alejandro; Saint-Martin, Humberto (2024-12-16). "Exploring the Dynamic Coordination Sphere of Lanthanide Aqua Ions: Insights from r2SCAN-3c Composite-DFT Born–Oppenheimer Molecular Dynamics Studies". ACS Omega. 9 (52): 50978–50991. doi:10.1021/acsomega.4c04947. ISSN 2470-1343. PMC 11696431. PMID 39758678.
  3. ↑ Shiery, Richard C.; Fulton, John L.; Balasubramanian, Mahalingam; Nguyen, Manh-Thuong; Lu, Jun-Bo; Li, Jun; Rousseau, Roger; Glezakou, Vassiliki-Alexandra; Cantu, David C. (2021-02-05). "Coordination Sphere of Lanthanide Aqua Ions Resolved with Ab Initio Molecular Dynamics and X-ray Absorption Spectroscopy". Inorganic Chemistry. 60 (5): 3117–3130. doi:10.1021/acs.inorgchem.0c03438. ISSN 0020-1669. OSTI 1769883. PMID 33544594.
  4. ↑ Shiery, Richard C.; Fulton, John L.; Balasubramanian, Mahalingam; Nguyen, Manh-Thuong; Lu, Jun-Bo; Li, Jun; Rousseau, Roger; Glezakou, Vassiliki-Alexandra; Cantu, David C. (2024-06-26). "Correction to "Coordination Sphere of Lanthanide Aqua Ions Resolved with Ab Initio Molecular Dynamics and X-ray Absorption Spectroscopy"". Inorganic Chemistry. 63 (27): 12690. doi:10.1021/acs.inorgchem.4c02511. ISSN 0020-1669. PMID 38920091.
  5. ↑ Ginsberg, A. P. (1964-04-01). "Transition Metal-Hydrogen Compounds. III. Dipotassium Enneahydridotechnate(VII)". Inorganic Chemistry. 3 (4): 567–569. doi:10.1021/ic50014a027. ISSN 0020-1669.
  6. ↑ Holleman, A. F.; Wiberg, Egon; Wiberg, Nils; Eagleson, Mary; Brewer, William; Aylett, Bernhard J., eds. (2001). Holleman-Wiberg inorganic chemistry. San Diego, Calif. London: Academic. ISBN 978-0-12-352651-9.
  7. 1 2 Persson, Ingmar (2010-08-06). "Hydrated metal ions in aqueous solution: How regular are their structures?". Pure and Applied Chemistry. 82 (10): 1901–1917. Bibcode:2010PApCh..82.1901P. doi:10.1351/PAC-CON-09-10-22. ISSN 1365-3075.