{"title":"Amino Imidazolin-2-imine Ligands in Magnesium Complexes: Approaches Towards Low-Valent Mg(I) Species","authors":"René Frank, Lars Denker, Mario Barthen","doi":"10.1002/zaac.202300247","DOIUrl":null,"url":null,"abstract":"Amino imidazoline-2-imines (AmIm) are a new class of chelating, monoanionic N,N´-donor ligands stronger than the analogous β-diketiminate ligands and give rise to five-membered metallacycles. The coordination chemistry of the monoanionic ligands 1,2-NHC=N−C6H4−NDipp− (i), cis-1,2-NHC=N−CMe=CMe−NDipp− (ii) was towards magnesium was investigated with the focus on the stabilization of low-valent magnesium(I) species, NHC = cyclo-C(NiPr2CMe)2, Dipp = 2,6-iPrC6H3. Both ligand systems (i) and (ii) form heteroleptic magnesium iodide species with were subjected to reduction. The complex [Mg(1,2-NHC=N−C6H4−NDipp)]2 was found to be insoluble, which prevented further purification. In contrast, the yield of the analogous complex [Mg(cis-1,2-NHC=N−CMe=CMe−NDipp)]2 was very low. As a significant side product the homoleptic complex [Mg(cis-1,2-NHC=N−CMe=CMe−NDipp)2] was identified.","PeriodicalId":23934,"journal":{"name":"Zeitschrift für anorganische und allgemeine Chemie","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift für anorganische und allgemeine Chemie","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/zaac.202300247","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Amino imidazoline-2-imines (AmIm) are a new class of chelating, monoanionic N,N´-donor ligands stronger than the analogous β-diketiminate ligands and give rise to five-membered metallacycles. The coordination chemistry of the monoanionic ligands 1,2-NHC=N−C6H4−NDipp− (i), cis-1,2-NHC=N−CMe=CMe−NDipp− (ii) was towards magnesium was investigated with the focus on the stabilization of low-valent magnesium(I) species, NHC = cyclo-C(NiPr2CMe)2, Dipp = 2,6-iPrC6H3. Both ligand systems (i) and (ii) form heteroleptic magnesium iodide species with were subjected to reduction. The complex [Mg(1,2-NHC=N−C6H4−NDipp)]2 was found to be insoluble, which prevented further purification. In contrast, the yield of the analogous complex [Mg(cis-1,2-NHC=N−CMe=CMe−NDipp)]2 was very low. As a significant side product the homoleptic complex [Mg(cis-1,2-NHC=N−CMe=CMe−NDipp)2] was identified.