Cador, Olivier and Cattey, Helene and Halet, Jean-Francois and Meier, Walter and Mugnier, Yves and Wachter, Joachim and Saillard, Jean-Yves and Zouchoune, Bachir and Zabel, Manfred (2007) Electron-sponge behavior and electronic structures in cobalt-centered pentagonal prismatic Co11Te7(CO)(10) and Co11Te5(CO)(15) cluster anions. INORGANIC CHEMISTRY, 46 (2). pp. 501-509. ISSN 0020-1669, 1520-510X
Full text not available from this repository. (Request a copy)Abstract
The novel cluster anion [Co11Te5(CO)(15)](-) ([3](-)) has been isolated and structurally characterized as part of the salt [Cp* Nb-2(CO)(2)][3] (Cp* = C5Me5). The cobalt-centered Co-10 pentagonal prism is surrounded by a shell of two mu(5)-Te, three mu(4)-Te ligands, and 15 CO groups in terminal, symmetrical, and sigma-semibridging bonding modes. The hybrid carbonyl-telluride character of the ligand shell is reflected in the solid state by a one-dimensional assembly of polyhedral prisms along a backbone of [Cp*Nb-2(CO)(2)](+) cations. Electrochemical studies reveal the presence of four redox couples of [3](n) (n = - 1 to - 5). The electronic structures of various metal-centered and empty pentagonal-prismatic (PP) M-10 clusters (M = Co, Ni) are calculated and compared to those of pentagonal-antiprismatic (PA) M-10 structures. Closed-shells of 152 and 156 metal valence electrons, respectively, are found to determine the electronic structures and chemical properties of these geometries. From these considerations, magnetic properties have been predicted. They have been verified for the [Co11Te7(CO)(10)](-) cluster anion, which exhibits a singlet triplet gap of 0.318 kcal/mol.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NICKEL CARBONYL CLUSTERS; X-RAY-STRUCTURE; POTENTIAL-DEPENDENT SPECTRA; METAL TELLURIDE CLUSTERS; TRANSITION-METAL; ICOSAHEDRAL CAGES; BONDING ANALYSIS; ORGANOMETALLIC CRYSTALS; DIANIONS; COMPLEXES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Arbeitskreis Dr. Joachim Wachter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Dec 2020 07:31 |
| Last Modified: | 23 Dec 2020 07:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33287 |
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