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Experimental and theoretical evidences for the formation of transition metal complexes with five coplanar metal-carbon σ bonds.

ABSTRACT: The σ bond is an important concept in chemistry, and the metal-carbon (M-C) σ bond in particular is a central feature in organometallic chemistry. Synthesis of stable complexes with five coplanar M-C σ bonds is challenging. Here, we describe the synthesis of two different types of stable complexes with five coplanar M-C σ bonds, and examine the stability of such complexes which use rigid conjugated carbon chains to chelate with the metal center. Density functional theory (DFT) calculations show that the M-C σ bonds in these complexes have primarily a covalent character. Besides the σ nature, there are also a π conjugation component among the metal center and carbons, which causes delocalization. This work expanded the coplanar M-C σ bonds to five.

SUBMITTER: Hua Y

PROVIDER: S-EPMC10789241 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature

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Experimental and theoretical evidences for the formation of transition metal complexes with five coplanar metal-carbon σ bonds.

Hua Yuhui Y Luo Ming M Lu Zhengyu Z Zhang Hong H Chen Dafa D Xia Haiping H

National science review 20231220 12

The σ bond is an important concept in chemistry, and the metal-carbon (M-C) σ bond in particular is a central feature in organometallic chemistry. Synthesis of stable complexes with five coplanar M-C σ bonds is challenging. Here, we describe the synthesis of two different types of stable complexes with five coplanar M-C σ bonds, and examine the stability of such complexes which use rigid conjugated carbon chains to chelate with the metal center. Density functional the ...[more]

PMID: 38226366

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