AI Article Synopsis
- * A similar η-allyl complex 3 with a germacyclopentenyl ring was produced when complex 1 reacted with butadiene under light, resulting in the cleavage of the Cr≡Ge bond.
- * In contrast, reactions of complex 1 with alkynes, also under light, led to a substitution of a CO ligand, producing η-alkyne germylyne complexes while preserving the Cr≡Ge triple bond.
Article Abstract
Germylyne complex Cp*(OC) Cr≡Ge{C(SiMe ) } (1) reacted with methyl vinyl ketone to give an η -allyl complex 2 with an oxagermacyclopentenyl ring. An analogous η -allyl complex 3 with a germacyclopentenyl ring was obtained by the reaction with butadiene, a non-polar conjugated molecule, under photoirradiation. These reactions are accompanied by cleavage of the Cr≡Ge triple bond. On the other hand, the reactions of complex 1 with alkynes under photoirradiation resulted in clean substitution of a CO ligand of 1 to afford (η -alkyne)germylyne complexes, where the Cr≡Ge triple bond is intact.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/asia.202300801 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Π-Character of Chromium Germylyne Complex in the Reactions with Enone, Butadiene, and Alkynes: Formation of Germacycles through [2+4] Cycloaddition with Conjugated Molecules.
Chem Asian J
November 2023
Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Sendai, Miyagi, 980-8578, Japan.
Article Synopsis
- * A similar η-allyl complex 3 with a germacyclopentenyl ring was produced when complex 1 reacted with butadiene under light, resulting in the cleavage of the Cr≡Ge bond.
- * In contrast, reactions of complex 1 with alkynes, also under light, led to a substitution of a CO ligand, producing η-alkyne germylyne complexes while preserving the Cr≡Ge triple bond.
Open-Shell Germylene Stabilized by a Phenalenyl-Based Ligand.
Inorg Chem
May 2023
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 561-0871, Japan.
An open-shell germylene stabilized by a phenalenyl-based bidentate ligand was synthesized and characterized. Because of the high thermal stability originating from spin delocalization over the phenalenyl moiety, it was possible to isolate compound in crystalline form by sublimation at ca. 300 °C.
View Article and Find Full Text PDFReactions of a tungsten-germylyne complex with α,β-unsaturated ketones: complete cleavage of the W≡Ge bond and formation of two types of η3-germoxyallyl tungsten complexes.
J Am Chem Soc
January 2014
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.
Germylyne complex Cp*(CO)2W≡Ge{C(SiMe3)3} (1) reacted with two molecules of RC(O)CH═CH2 (R = Me, Et) to give η(3)-allyl complexes, in which an oxagermacyclopentene framework was bound to an η(3)-allyl ligand through an oxygen atom. In the reaction with α-Me-substituted MeC(O)C(Me)═CH2, 1 reacted with only one molecule of the substrate to give another type of η(3)-allyl complex, in which a five-membered oxagermacyclopentenyl ring was coordinated to the W center in an η(3) fashion. Both reactions resulted in unprecedented complete cleavage of a W≡Ge triple bond.
View Article and Find Full Text PDFReactions of a tungsten-germylyne complex with alcohols and arylaldehydes.
Chem Commun (Camb)
May 2013
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan.
A germylyne complex Cp*(CO)2W≡GeC(SiMe3)3 (1) reacted with alcohols to give simple nucleophilic addition products, while 1 reacted with two molecules of arylaldehydes consecutively to give base-stabilised alkoxy(germylene) complexes via C-H bond activation and hydrogermylation.
View Article and Find Full Text PDFFormation of a germylyne complex: dehydrogenation of a hydrido(hydrogermylene)tungsten complex with mesityl isocyanate.
Angew Chem Int Ed Engl
March 2012
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!