Dianionic Carbon‐Bridged Scandium–Copper/Silver Heterobimetallic Complexes: Synthesis, Bonding, and Reactivity. Issue 21 (9th March 2018)

• Record Type: Journal Article
• Authors: Wang, Chen; Xiang, Li; Yang, Yan; Fang, Jian; Maron, Laurent; Leng, Xuebing; Chen, Yaofeng
• Is Part Of: Chemistry. Volume 24:Issue 21(2018)
• Page Start: 5637
• Page End: 5643
• Publication Date: 2018-03-09
• Subjects: alkylidenes -- cooperative effects -- density functional calculations -- heterometallic -- scandium; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201706147
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Alkylidene‐bridged scandium–copper/silver heterobimetallic complexes were synthesized and structurally characterized. The complexes contain different Sc−C and M−C (M=Cu I, Ag I ) bonds. The reactivity of the scandium–copper heterobimetallic complex was also studied, which reveals that the heterobimetallic complex is a reaction intermediate for the transmetalation of akylidene group from Sc III to Cu I . The scandium–copper heterobimetallic complex also undergoes an addition reaction with CO, resulting in the formation of a new C=C double bond. DFT calculations were used to study the bonding and the subsequent reactivity with CO of the scandium–copper heterobimetallic complex. It clearly demonstrates a cooperative effect between the two metal centers through the formation of a direct Sc⋅⋅⋅Cu interaction that drives the reactivity with CO. Abstract : Different places : Alkylidene‐bridged Sc–Cu/Ag heterobimetallic complexes were synthesized and structurally characterized. The Sc–Cu heterobimetallic complex reacts with CuI, isocyanide, or CO and a cooperative effect between the two metal centers through the formation of a direct Sc⋅⋅⋅Cu interaction was demonstrated for the CO insertion reaction (see scheme).