Mathias Glatz, Nikolaus Gorgas, Berthold Stöger, Ernst Pittenauer, Liliana Ferreira, Luis F Veiros, Maria José Calhorda, Karl Kirchner
{"title":"Structural and Electronic Properties of Iron(0) PNP Pincer Complexes.","authors":"Mathias Glatz, Nikolaus Gorgas, Berthold Stöger, Ernst Pittenauer, Liliana Ferreira, Luis F Veiros, Maria José Calhorda, Karl Kirchner","doi":"10.1002/zaac.202100015","DOIUrl":null,"url":null,"abstract":"<p><p>In the present work we have prepared and fully characterized several Fe(0) complexes of the type [Fe(PNP)(CO)<sub>2</sub>] treating Fe(II) complexes [Fe(PNP)(Cl)<sub>2</sub>] with KC<sub>8</sub> in the presence of carbon monoxide. While complexes [Fe(PNP<sup>NMe</sup>-<i>i</i>Pr)(CO)<sub>2</sub>], [Fe(PNP<sup>NEt</sup>-<i>i</i>Pr)(CO)<sub>2</sub>] adopt a trigonal bipyramidal geometry, the bulkier and more electron rich [Fe(PNP<sup>NH</sup>-<i>t</i>Bu)(CO)<sub>2</sub>] is closer to a square pyramidal geometry. Mössbauer spectra showed isomer shifts very close to 0 and similar to those reported for Fe(I) systems. Quadrupole splitting values range between 2.2 and 2.7 mm s<sup>-1</sup> both in experiments and DFT calculations, while those of Fe(I) complexes are much smaller (∼0.6 mm s<sup>-1</sup>).</p>","PeriodicalId":54398,"journal":{"name":"Zeitschrift fur Anorganische und Allgemeine Chemie","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360027/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift fur Anorganische und Allgemeine Chemie","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1002/zaac.202100015","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2021/5/4 0:00:00","PubModel":"Epub","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
In the present work we have prepared and fully characterized several Fe(0) complexes of the type [Fe(PNP)(CO)2] treating Fe(II) complexes [Fe(PNP)(Cl)2] with KC8 in the presence of carbon monoxide. While complexes [Fe(PNPNMe-iPr)(CO)2], [Fe(PNPNEt-iPr)(CO)2] adopt a trigonal bipyramidal geometry, the bulkier and more electron rich [Fe(PNPNH-tBu)(CO)2] is closer to a square pyramidal geometry. Mössbauer spectra showed isomer shifts very close to 0 and similar to those reported for Fe(I) systems. Quadrupole splitting values range between 2.2 and 2.7 mm s-1 both in experiments and DFT calculations, while those of Fe(I) complexes are much smaller (∼0.6 mm s-1).
期刊介绍：
ZAAC is an international scientific journal which publishes original papers on new relevant research results from all areas of inorganic chemistry, solid state chemistry, and co-ordination chemistry.
The contributions reflect the latest findings in these research areas and serve the development of new materials, such as super-hard materials, electrical superconductors, or intermetallic compounds. Up-to-date physical methods for the characterization of new chemical compounds and materials are also described.
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