{"title":"Heteroleptic Binuclear Pivalate-, Pyrazolate-Bridged Copper(II) Complexes with 1,10-Phenanthroline","authors":"M. A. Uvarova, M. A. Shmelev, S. E. Nefedov","doi":"10.1134/S1070328424600736","DOIUrl":null,"url":null,"abstract":"<p>The reaction of the mononuclear complex [PhenCu(OOC<sup><i>t</i></sup>Bu)<sub>2</sub>(H<sub>2</sub>O)] (<b>I</b>) with [PhenCu(CH<sub>3</sub>CN)(Otf)<sub>2</sub>] (Phen = 1,10-phenanthroline, Otf = CF<sub>3</sub>S<span>\\({\\text{O}}_{3}^{ - }\\)</span>) in dichloromethane at room temperature gave the binuclear complex [Phen<sub>2</sub>Cu<sub>2</sub>(µ-OOC<sup><i>t</i></sup>Bu)<sub>2</sub>(Otf)<sub>2</sub>] (<b>II</b>). The reaction of <b>II</b> with pyrazole (PzH) involved the displacement of the triflate anions to the outer sphere and gave the ionic complex [Phen<sub>2</sub>Cu<sub>2</sub>(µ-OOC<sup><i>t</i></sup>Bu)<sub>2</sub>(PzH)<sub>2</sub>](Otf)<sub>2</sub> (<b>III</b>), while a similar reaction with 3,5-bis(trifluoromethyl)pyrazole ((CF<sub>3</sub>)<sub>2</sub>PzH) was accompanied by its deprotonation and gave the heteroleptic complex [Phen<sub>2</sub>Cu<sub>2</sub>(µ-OOC<sup><i>t</i></sup>Bu)(µ-(CF<sub>3</sub>)<sub>2</sub>Pz)(µ-Otf)]Otf (<b>IV</b>). Compounds <b>I</b>–<b>IV</b> were characterized by X-ray diffraction (CCDC nos. 2332399 (<b>I</b>), 2332400 (<b>II</b>), 2332402 (<b>III</b>), and 2332401 (<b>IV</b>)), IR spectroscopy, and elemental analysis. According to X-ray diffraction data, the copper atoms in <b>I</b>–<b>IV</b> occur in a square pyramidal environment. The crystal packing of complexes <b>I</b>–<b>III</b> involves stacking interactions between phenanthroline molecules giving rise to supramolecular chains.</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":"50 11","pages":"1029 - 1036"},"PeriodicalIF":1.1000,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Coordination Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S1070328424600736","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The reaction of the mononuclear complex [PhenCu(OOCtBu)2(H2O)] (I) with [PhenCu(CH3CN)(Otf)2] (Phen = 1,10-phenanthroline, Otf = CF3S\({\text{O}}_{3}^{ - }\)) in dichloromethane at room temperature gave the binuclear complex [Phen2Cu2(µ-OOCtBu)2(Otf)2] (II). The reaction of II with pyrazole (PzH) involved the displacement of the triflate anions to the outer sphere and gave the ionic complex [Phen2Cu2(µ-OOCtBu)2(PzH)2](Otf)2 (III), while a similar reaction with 3,5-bis(trifluoromethyl)pyrazole ((CF3)2PzH) was accompanied by its deprotonation and gave the heteroleptic complex [Phen2Cu2(µ-OOCtBu)(µ-(CF3)2Pz)(µ-Otf)]Otf (IV). Compounds I–IV were characterized by X-ray diffraction (CCDC nos. 2332399 (I), 2332400 (II), 2332402 (III), and 2332401 (IV)), IR spectroscopy, and elemental analysis. According to X-ray diffraction data, the copper atoms in I–IV occur in a square pyramidal environment. The crystal packing of complexes I–III involves stacking interactions between phenanthroline molecules giving rise to supramolecular chains.
期刊介绍：
Russian Journal of Coordination Chemistry is a journal that publishes reviews, original papers, and short communications on all aspects of theoretical and experimental coordination chemistry. Modern coordination chemistry is an interdisciplinary science that makes a bridge between inorganic, organic, physical, analytical, and biological chemistry.
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