Multiple Bonding Between Group 3 Metals and Fe(CO)3−. (3rd January 2020)

• Record Type: Journal Article
• Authors: Wang, Jia‐Qi; Chi, Chaoxian; Hu, Han‐Shi; Li, Xiang; Luo, Mingbiao; Li, Jun; Zhou, Mingfei
• Is Part Of: Angewandte Chemie. Volume 132:Number 6(2020)
• Page Start: 2364
• Page End: 2368
• Publication Date: 2020-01-03
• Subjects: Eisen -- Gruppe-3-Metalle -- Infrarot-Photodissoziationsspektroskopie -- Metall-Metall-Bindungen -- Quantenchemische Studien; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201914536
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Heteronuclear Group 3 metal/iron carbonyl anion complexes ScFe(CO)3 −, YFe(CO)3 −, and LaFe(CO)3 − are prepared in the gas phase and studied by mass‐selective infrared (IR) photodissociation spectroscopy as well as quantum‐chemical calculations. All three anion complexes are characterized to have a metal–metal‐bonded C 3 v equilibrium geometry with all three carbonyl ligands bonded to the iron center and a closed‐shell singlet electronic ground state. Bonding analyses reveal that there are multiple bonding interactions between the bare group‐3 elements and the Fe(CO)3 − fragment. Besides one covalent electron‐sharing metal–metal σ bond and two dative π bonds from Fe to the Group 3 metal, there is additional multicenter covalent bonding with the Group 3 atom bonded to Fe and the carbon atoms. Abstract : Vier gewinnt : Die heteronuklearen anionischen Gruppe‐3‐Metall/Eisencarbonyl‐Komplexe ScFe(CO)3 −, YFe(CO)3 −, and LaFe(CO)3 − wurden in der Gasphase hergestellt und durch massenselektive Infrarot‐Photodissoziationsspektroskopie sowie quantenchemische Berechnungen untersucht. Die Ergebnisse zeigen eine beispiellose Vierfachbindung zwischen den beiden Metallatomen auf.