{"title":"Cobalt–Magnesium and Cobalt–Calcium Heterotrimetallic Dinitrogen Complexes","authors":"Jocelyn Polanco, Theresa Knoell, A. Bakhoda","doi":"10.1055/a-2263-8235","DOIUrl":null,"url":null,"abstract":"We report the use of alkaline earth metals magnesium and calcium for the reduction of the cobalt(II) complex [iPr2NN]Co(μ–Cl)2Li(thf)2 (iPr2NN = 2,4-bis-(2,6-diisopropylphenylimido)pentyl) (1) resulting in heterotrimetallic dinitrogen complexes 2 and 3 with a rare example of [Co–N2–M–N2–Co] core where M = Mg (complex 2) and Ca (complex 3). The dinitrogen ligands in complexes 2 and 3 showed weakened N–N bonds, as judged by infrared spectroscopy and the structures of 2 and 3 were confirmed by X-ray crystallography. These cobalt complexes can be isolated as pure solids that are stable in solution of non-coordinating solvents such as n-pentane or cyclohexane, as well as THF. These results demonstrate the correlation between the binding mode of the Lewis acid and N–N weakening in heterotrimetallic dinitrogen complexes.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":"27 2","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Bio Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1055/a-2263-8235","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, BIOMATERIALS","Score":null,"Total":0}
引用次数: 0
Abstract
We report the use of alkaline earth metals magnesium and calcium for the reduction of the cobalt(II) complex [iPr2NN]Co(μ–Cl)2Li(thf)2 (iPr2NN = 2,4-bis-(2,6-diisopropylphenylimido)pentyl) (1) resulting in heterotrimetallic dinitrogen complexes 2 and 3 with a rare example of [Co–N2–M–N2–Co] core where M = Mg (complex 2) and Ca (complex 3). The dinitrogen ligands in complexes 2 and 3 showed weakened N–N bonds, as judged by infrared spectroscopy and the structures of 2 and 3 were confirmed by X-ray crystallography. These cobalt complexes can be isolated as pure solids that are stable in solution of non-coordinating solvents such as n-pentane or cyclohexane, as well as THF. These results demonstrate the correlation between the binding mode of the Lewis acid and N–N weakening in heterotrimetallic dinitrogen complexes.
期刊介绍:
ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.