Mononuclear carbonyl anion complexes of groups IV and V metals
| Autor: | Shu-jun Lei, Yang-yu Zhou, Xiao-yang Jin, Guan-jun Wang, Ming-fei Zhou |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Chinese Journal of Chemical Physics. 35:867-874 |
| ISSN: | 2327-2244 1674-0068 |
| DOI: | 10.1063/1674-0068/cjcp2105096 |
| Popis: | The anionic carbonyl complexes of groups IV and V metals TM(CO)6,7(TM=Ti, Zr, Hf, V, Nb, Ta) are prepared in the gas phase using a laser vaporation-supersonic expansion ion source. The infrared spectra of TM(CO)6,7− anion complexes in the carbonyl stretching frequency region are measured by mass-selected infrared photodissociation spectroscopy. The six-coordinated TM(CO)6− anions are determined to be the coordination saturate complexes for both the group IV and group V metals. The TM(CO)6− complexes of group IV metals (TM = Ti, Zr, Hf) are 17-electron complexes having a 2A1g ground state with D3d symmetry, while the TM(CO)6− complexes of group V metals (TM = V, Nb, Ta) are 18-electron species with a closed-shell singlet ground state possessing Oh symmetry. The energy decomposition analyses indicate that the metal-CO covalent bonding is dominated by TM−(d) → (CO)6 π-backdonation and TM−(d) ← (CO)6 σ-donation interactions. |
| Databáze: | OpenAIRE |
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