Renee G Eleftheriades, Alan J Lough, Paul A Dube, Robert H Morris
{"title":"Preparation of [Co(II)(PNNP)Br]<sup>+</sup> PNNP = {PR<sup>1</sup><sub>2</sub>CH<sub>2</sub>CHNCHR<sup>2</sup>-}<sub>2</sub> complexes by the template method and their reactions.","authors":"Renee G Eleftheriades, Alan J Lough, Paul A Dube, Robert H Morris","doi":"10.1039/d6dt01732k","DOIUrl":null,"url":null,"abstract":"<p><p>Paramagnetic cobalt(II) and diamagnetic cobalt(III) PNNP complexes were prepared for the first time from bench-stable phosphonium dimers in a facile one-pot template synthesis. The template method allows for the easy customization of the phosphine and amine backbone substituents. Smaller substituents and anions result in the formation of unusual polymeric structures featuring linear bromide bridges. These complexes were characterized by crystallography, elemental analysis, cyclic voltammetry, magnetometry and electron paramagnetic resonance spectroscopy. The PNNP ligands impart similar electrochemical properties to Co(II) as the (PMe<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>PMe<sub>2</sub>)<sub>2</sub> ligand set according to a modified Lever correlation. The complexes undergo interesting redox disproportionation reactions. They are less active for the catalytic transfer hydrogenation of ketones than similar complexes with an NH group on the PNNHP' ligand.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" ","pages":"14832-14841"},"PeriodicalIF":3.3000,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d6dt01732k","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Paramagnetic cobalt(II) and diamagnetic cobalt(III) PNNP complexes were prepared for the first time from bench-stable phosphonium dimers in a facile one-pot template synthesis. The template method allows for the easy customization of the phosphine and amine backbone substituents. Smaller substituents and anions result in the formation of unusual polymeric structures featuring linear bromide bridges. These complexes were characterized by crystallography, elemental analysis, cyclic voltammetry, magnetometry and electron paramagnetic resonance spectroscopy. The PNNP ligands impart similar electrochemical properties to Co(II) as the (PMe2CH2CH2PMe2)2 ligand set according to a modified Lever correlation. The complexes undergo interesting redox disproportionation reactions. They are less active for the catalytic transfer hydrogenation of ketones than similar complexes with an NH group on the PNNHP' ligand.
期刊介绍：
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
