{"title":"Unsymmetrical amidinate complexes of cobalt and manganese: Synthesis, structure and catalytic properties","authors":"Xinhua Hu , Hongbo Tong , Meisu Zhou","doi":"10.1016/j.poly.2025.117562","DOIUrl":null,"url":null,"abstract":"<div><div>Unsymmetrical amidinate Co(Ⅱ) complexes [Co{N(2,6-<em><sup>i</sup></em>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)C(Ph)N(SiMe<sub>3</sub>)}<sub>2</sub>] (<strong>1</strong>,<strong>1a</strong>) and Mn(Ⅱ) complex [Mn{N(2,6-<em><sup>i</sup></em>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>)C(Ph)N(SiMe<sub>3</sub>)}<sub>2</sub>PhCN] (<strong>3</strong>) were synthesized and characterized. Their single crystal X-ray diffraction results were presented to analyze the differences in crystal formation. These complexes were used as catalyst in the addition reaction of aromatic amines with <em>N,N’</em>-diisopropylcarbodiimide. Complex <strong>1</strong> exhibits relatively higher catalytic activity. Especially in the addition reaction of 2,6-diisopropylaniline, which has large steric hindrance, with <em>N,N’</em>-diisopropylcarbodiimide in THF solvent, the catalyzed yield could be up to 99 %.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"276 ","pages":"Article 117562"},"PeriodicalIF":2.6000,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polyhedron","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0277538725001767","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/21 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Unsymmetrical amidinate Co(Ⅱ) complexes [Co{N(2,6-iPr2C6H3)C(Ph)N(SiMe3)}2] (1,1a) and Mn(Ⅱ) complex [Mn{N(2,6-iPr2C6H3)C(Ph)N(SiMe3)}2PhCN] (3) were synthesized and characterized. Their single crystal X-ray diffraction results were presented to analyze the differences in crystal formation. These complexes were used as catalyst in the addition reaction of aromatic amines with N,N’-diisopropylcarbodiimide. Complex 1 exhibits relatively higher catalytic activity. Especially in the addition reaction of 2,6-diisopropylaniline, which has large steric hindrance, with N,N’-diisopropylcarbodiimide in THF solvent, the catalyzed yield could be up to 99 %.
期刊介绍：
Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry.
Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.
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