{"title":"Trans-to-cis isomerization of a platinum(II) complex with two triphosphine ligands via coordination with gold(I) ions","authors":"Kazuki Nagasato, Taichi Baba, Hayato Soma, Nobuto Yoshinari","doi":"10.1007/s10847-024-01228-2","DOIUrl":null,"url":null,"abstract":"<div><p>The reaction of a square-planar platinum(II) complex containing two bis(2-diphenylphosphinoethyl)phenylphosphine (triphos), [Pt(triphos)<sub>2</sub>](NO<sub>3</sub>)<sub>2</sub>, with [Au(tu)<sub>2</sub>]Cl (tu = thiourea) gave a new trinuclear Au<sup>I</sup><sub>2</sub>Pt<sup>II</sup> complex, [Pt(triphos)<sub>2</sub>{Au(tu)}<sub>2</sub>]Cl<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>, through Au-P coordination. While the [Pt(triphos)<sub>2</sub>]<sup>2+</sup> unit in [Pt(triphos)<sub>2</sub>](NO<sub>3</sub>)<sub>2</sub> adopted the trans-meso configuration, only the cis-racemic isomer was observed for [Pt(triphos)<sub>2</sub>{Au(tu)}<sub>2</sub>]Cl<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub>. <sup>31</sup>P NMR spectroscopy indicated rapid equilibrium among the possible isomers of [Pt(triphos)<sub>2</sub>]<sup>2+</sup>, which facilitated the trans-to-cis transformation at the Pt<sup>II</sup> center in this system. Additionally, we observed that this structural transformation led to an increase in the emission intensity.</p></div>","PeriodicalId":638,"journal":{"name":"Journal of Inclusion Phenomena and Macrocyclic Chemistry","volume":"104 5-6","pages":"257 - 268"},"PeriodicalIF":2.3000,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10847-024-01228-2.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Inclusion Phenomena and Macrocyclic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10847-024-01228-2","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
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Abstract
The reaction of a square-planar platinum(II) complex containing two bis(2-diphenylphosphinoethyl)phenylphosphine (triphos), [Pt(triphos)2](NO3)2, with [Au(tu)2]Cl (tu = thiourea) gave a new trinuclear AuI2PtII complex, [Pt(triphos)2{Au(tu)}2]Cl2(NO3)2, through Au-P coordination. While the [Pt(triphos)2]2+ unit in [Pt(triphos)2](NO3)2 adopted the trans-meso configuration, only the cis-racemic isomer was observed for [Pt(triphos)2{Au(tu)}2]Cl2(NO3)2. 31P NMR spectroscopy indicated rapid equilibrium among the possible isomers of [Pt(triphos)2]2+, which facilitated the trans-to-cis transformation at the PtII center in this system. Additionally, we observed that this structural transformation led to an increase in the emission intensity.
期刊介绍：
The Journal of Inclusion Phenomena and Macrocyclic Chemistry is the premier interdisciplinary publication reporting on original research into all aspects of host-guest systems. Examples of specific areas of interest are: the preparation and characterization of new hosts and new host-guest systems, especially those involving macrocyclic ligands; crystallographic, spectroscopic, thermodynamic and theoretical studies; applications in chromatography and inclusion polymerization; enzyme modelling; molecular recognition and catalysis by inclusion compounds; intercalates in biological and non-biological systems, cyclodextrin complexes and their applications in the agriculture, flavoring, food and pharmaceutical industries; synthesis, characterization and applications of zeolites.
The journal publishes primarily reports of original research and preliminary communications, provided the latter represent a significant advance in the understanding of inclusion science. Critical reviews dealing with recent advances in the field are a periodic feature of the journal.
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