A Bis-(carbone) Pincer Ligand and Its Coordinative Behavior toward Multi-Metallic Configurations

Bamlaku Semagne Aweke; Cheng-Han Yu; Minna Zhi; Wen-Ching Chen; Glenn P A Yap; Lili Zhao; Tiow-Gan Ong

doi:10.1002/anie.202201884

A Bis-(carbone) Pincer Ligand and Its Coordinative Behavior toward Multi-Metallic Configurations

Angew Chem Int Ed Engl. 2022 Jun 13;61(24):e202201884. doi: 10.1002/anie.202201884. Epub 2022 Mar 30.

Authors

Bamlaku Semagne Aweke^{1

2

3}, Cheng-Han Yu¹, Minna Zhi⁴, Wen-Ching Chen¹, Glenn P A Yap⁵, Lili Zhao⁴, Tiow-Gan Ong^{1

6

7}

Affiliations

¹ Institute of Chemistry, Academia Sinica, Taipei, Taiwan, ROC.
² Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, Taiwan, ROC.
³ Sustainable Chemical Science and Technology (SCST), Taiwan International Graduate Program (TIGP), Academia Sinica, Taipei, Taiwan, ROC.
⁴ Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, China.
⁵ Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, USA.
⁶ Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC.
⁷ Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC.

PMID: 35293113
DOI: 10.1002/anie.202201884

Abstract

Carbones are divalent carbon(0) species that contain two lone pairs of electrons. Herein, we have prepared the first known stable and isolable free bis-(carbone) pincer framework with a well-defined solid-state structure. This bis-(carbone) ligand is an effective scaffold for forming monometallic (Ni and Pd) and trinuclear heterometallic complexes with Au-Pd-Au, Au-Ni-Au, and Cu-Ni-Cu configurations. Sophisticated quantum-theoretical analyses found that the metal-metal interactions are too weak to play a significant role in upholding these multi-metallic configurations; rather, the four lone pairs of electrons within the bis-(carbone) framework are the main contributors to the stability of the complexes.

Keywords: Bis-(Carbone); Heterometallic Coordination; Metal-Metal Interactions; Pincer Ligands.

Abstract

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