Organometallics最新文献

{"title":"Synthesis, Characterization, and Electrochemical Polymerization of Some 5,5-Fused Ring Terthiophene Tricarbonyl Manganese Complexes","authors":"Nathan C. Tice*,&nbsp;Daniel J. Little,&nbsp;Valeria Mattern-Mondragon,&nbsp;Seth T. King,&nbsp;John P. Selegue and Sean Parkin,&nbsp;","doi":"10.1021/acs.organomet.4c0037010.1021/acs.organomet.4c00370","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00370https://doi.org/10.1021/acs.organomet.4c00370","url":null,"abstract":"<p >Polythiophenes are of great interest for use in electronic materials due to their stability and favorable materials properties. Thiophene-based electronic materials provide an attractive alternative to conventional inorganic semiconductors. We have targeted hybrid materials that combine the versatility of transition metals with oligo- and polythiophenes. We report here terthiophenes in which the [<i>c</i>]-edge of the central thiophene is fused to a cyclopentadienyltricarbonylmanganese group. These thiapentalenyl complexes, [Mn{η⁵-SC₇H₃-1,3-R₂}(CO)₃], were prepared in moderate to good yields (50–80%) via ring closure of 1,2-diacylcymantrenes, [Mn{η⁵-1,2-C₅H₃(COR)₂}(CO)₃] (R = thienyl, 5-methylthienyl, 5-chlorothienyl, 5-bromothienyl) with Lawesson’s reagent. These complexes display high environmental stability and were characterized via spectroscopic methods as well as X-ray crystallography. Cyclic voltammetry shows that the unsubstituted terthiophene manganese complex is susceptible toward electrochemical polymerization, whereas the 5-methyl complex is not. X-ray photoelectron spectroscopy (XPS) confirmed the presence of manganese in the polymeric films and indicated a nearly identical bonding environment of manganese in the monomer and the films.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"44 1","pages":"54–67 54–67"},"PeriodicalIF":2.5,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143085147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and Metalation of N-Heterocyclic Carbene Ligands with Sterically Tunable 2,6-dialkoxyphenyl Wingtip Groups","authors":"Meilin Q. Lim,&nbsp;Kasandra J. Brick,&nbsp;Jesse LeBlanc,&nbsp;Charley Garrard and Eric C. Keske*,&nbsp;","doi":"10.1021/acs.organomet.4c0036910.1021/acs.organomet.4c00369","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00369https://doi.org/10.1021/acs.organomet.4c00369","url":null,"abstract":"<p >N-Heterocyclic carbenes (NHCs) featuring 2,6-dialkoxyphenyl wingtip groups are synthesized, and their coordination chemistry and properties are studied. Linear [(NHC)CuCl] complexes composed of ligands synthesized herein were characterized by X-ray crystallography and used to analyze the ligand steric parameters. We demonstrate that the use of different alkyl halides in the preparation of these ligands results in NHCs that are sterically tunable and potentially capable of hemilability. Furthermore, the electronic properties of these ligands are assessed by computational methods, which demonstrate these NHCs to be highly electron donating in nature. Additional metalation of these ligands to sulfur, silver, and palladium is reported, and the resulting palladium complexes are tested in the Suzuki–Miyaura reaction of challenging aryl chlorides to benchmark catalytic activity. A direct correlation between steric impacts and catalytic performance is observed.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"44 1","pages":"82–93 82–93"},"PeriodicalIF":2.5,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143085144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chloride, Alkoxide, or Silicon: The Bridging Ligand Dictates the Spin State in Dicobalt Expanded Pincer Complexes.","authors":"Roel L M Bienenmann, Arun S Asundi, Martin Lutz, Ritimukta Sarangi, Daniël L J Broere","doi":"10.1021/acs.organomet.4c00374","DOIUrl":"10.1021/acs.organomet.4c00374","url":null,"abstract":"<p><p>We report the synthesis and characterization of a series of high- and low-spin dicobalt complexes of the ^tBuPNNP expanded pincer ligand. Reacting this dinucleating ligand in its neutral form with two equiv of CoCl₂(tetrahydrofuran)_1.5 yields a high-spin dicobalt complex featuring one Co inside and one Co outside of the dinucleating pocket. Performing the same reaction in the presence of two equivalents of KOtBu provides access to a high-spin dicobalt complex wherein both Co centers are bound within the PNNP pocket, and this complex also features a bridging OtBu ligand. Reacting either of the high-spin complexes with excess diethyl silane affords a low-spin dicobalt complex containing two unusual bridging Si-based ligands. These complexes were investigated using NMR spectroscopy, XAS, single crystal X-ray structure determination, and computational methods, showing that the Si-based ligands are best described as base-stabilized silylenes.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"44 1","pages":"94-104"},"PeriodicalIF":2.5,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11734127/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scandium Bis(o-aminobenzyl) Complexes Coordinated by 5-Methyl-5,6-dihydroindeno[2,1-b]indolyl Ligands: Synthesis, Structures, and Catalytic Activity in Isoprene Polymerization and Olefin Hydrophosphination","authors":"Aleksei O. Tolpygin,&nbsp;Anton V. Cherkasov,&nbsp;Georgy K. Fukin,&nbsp;Tatyana A. Kovylina and Alexander A. Trifonov*,&nbsp;","doi":"10.1021/acs.organomet.4c0041610.1021/acs.organomet.4c00416","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00416https://doi.org/10.1021/acs.organomet.4c00416","url":null,"abstract":"<p >Deprotonation of 5-methyl-5,6-dihydroindeno[2,1-<i>b</i>]indole (<b>L</b>^<b>1</b><b>H</b>) or 2-(<i>tert</i>-butyl)-5-methyl-5,6-dihydroindeno[2,1-<i>b</i>]indole (<b>L</b>^<b>2</b><b>H</b>) with an equimolar amount of <i>n-</i>BuLi in Et₂O affords the 5,6-dihydroindeno[2,1-<i>b</i>]indolyl derivatives <b>L</b>^<b>1</b>Li(Et₂O)₂ (<b>1</b>) and [<b>L</b>^<b>2</b>Li(Et₂O)]₆ (<b>2</b>) in 67 and 73% yields. Complex <b>1</b> proved to be monomeric in the crystalline state, whereas <b>2</b> adopts a cyclic hexameric structure. The protonation of Sc(CH₂C₆H₄-<i>o</i>-NMe₂)₃ by an equimolar amount of [HNEt₃][BPh₄] allows for the synthesis of a cationic scandium bis(<i>o</i>-aminobenzyl) complex [Sc(CH₂C₆H₄-<i>o</i>-NMe₂)₂(THF)₂][BPh₄] (<b>3</b>) which was successfully employed as a precursor for the preparation of bis(<i>o</i>-aminobenzyl) 5,6-dihydroindeno[2,1-<i>b</i>]indolyl species. The salt metathesis reactions of lithium derivatives <b>1</b> and <b>2</b> with <b>3</b> (THF, 20 °C) afford complexes <b>L</b>^<b>1</b>Sc(CH₂C₆H₄-<i>o</i>-NMe₂)₂ (<b>4</b>) and <b>L</b>^<b>2</b>Sc(CH₂C₆H₄-<i>o</i>-NMe₂)₂ (<b>5</b>) in 69 and 73% yields. Complexes <b>4</b> and <b>5</b> are monomeric and Lewis-base free. Complexes <b>4</b> and <b>5</b> as part of binary (<b>4</b>, <b>5</b>/[Ph₃C][B(C₆F₅)₄], <b>4</b>, <b>5</b>/[PhNHMe][B(C₆F₅)₄]) and ternary (<b>4</b>, <b>5/</b>([Ph₃C][B(C₆F₅)₄], [PhNHMe][B(C₆F₅)₄])/AliBu₃ (1:1:10)) catalytic systems are efficient initiators for isoprene polymerization which enable quantitative conversion of monomers in 30 min ([IP]/[Ln] = 1000) even at −30 °C. The resulting polymers have a predominantly <i>cis</i>-1,4 structure (up to 80.9%; <i>M</i>_n = 58.8–2315.9 × 10³; <i>M</i>_w/<i>M</i>_n = 1.35–3.12). Complexes <b>4</b> and <b>5</b> catalyze the intermolecular hydrophosphination of styrene, α-methylstyrene, and phenylacetylene with Ph₂PH and PhPH₂ under mild conditions.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"44 1","pages":"158–168 158–168"},"PeriodicalIF":2.5,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chloride, Alkoxide, or Silicon: The Bridging Ligand Dictates the Spin State in Dicobalt Expanded Pincer Complexes","authors":"Roel L. M. Bienenmann,&nbsp;Arun S. Asundi,&nbsp;Martin Lutz,&nbsp;Ritimukta Sarangi and Daniël L. J. Broere*,&nbsp;","doi":"10.1021/acs.organomet.4c0037410.1021/acs.organomet.4c00374","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00374https://doi.org/10.1021/acs.organomet.4c00374","url":null,"abstract":"<p >We report the synthesis and characterization of a series of high- and low-spin dicobalt complexes of the ^tBuPNNP expanded pincer ligand. Reacting this dinucleating ligand in its neutral form with two equiv of CoCl₂(tetrahydrofuran)_1.5 yields a high-spin dicobalt complex featuring one Co inside and one Co outside of the dinucleating pocket. Performing the same reaction in the presence of two equivalents of KOtBu provides access to a high-spin dicobalt complex wherein both Co centers are bound within the PNNP pocket, and this complex also features a bridging OtBu ligand. Reacting either of the high-spin complexes with excess diethyl silane affords a low-spin dicobalt complex containing two unusual bridging Si-based ligands. These complexes were investigated using NMR spectroscopy, XAS, single crystal X-ray structure determination, and computational methods, showing that the Si-based ligands are best described as base-stabilized silylenes.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"44 1","pages":"94–104 94–104"},"PeriodicalIF":2.5,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.organomet.4c00374","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trapping of Key “Ate” Intermediates of NHC-Group IV Relevant to Catalyzing Copolymerization of Cyclohexene Oxide with CO2","authors":"Lakshmi Suresh,&nbsp;Ralte Lalrempuia,&nbsp;Torstein Fjermestad,&nbsp;Karl. W. Törnroos,&nbsp;Jérôme Bour,&nbsp;Gilles Frache,&nbsp;Ainara Nova* and Erwan Le Roux*,&nbsp;","doi":"10.1021/acs.organomet.4c0037110.1021/acs.organomet.4c00371","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00371https://doi.org/10.1021/acs.organomet.4c00371","url":null,"abstract":"<p >Together with bimetallic systems, metalates derived from anionic nucleophile-activated monometallic systems have shown very high catalytic performances for polycarbonates in epoxide–CO₂ copolymerization. However, examples of isolated metalates are rather scarce. Lately, a putative initiating hafnium “ate” species was isolated upon the addition of [PPN]Cl to the <i>N</i>-heterocyclic carbene (NHC) complex of hafnium [PPN][({κ³-<i>O,C,O</i>}-NHC)HfCl₃] <b>3-Hf</b>. Inspired by this lead, Ti and Zr “ate” analogues of <b>3-Hf</b>, <b>3-Ti</b> and <b>3-Zr</b>, respectively, were synthesized. All the “ate” complexes exhibited high activity (TOF ≈ 363 h^–1) and polycarbonate selectivity (≥99%) in the copolymerization of cyclohexene oxide (CHO) and CO₂ under mild conditions. Monitoring the ring-opening of CHO at room temperature with <b>3-Hf</b> revealed the rapid formation of a rare metalate intermediate, [PPN][({κ³-O,C,O}-NHC)HfCl₂(OC₆H₁₀Cl)] <b>5-Hf</b>. Under similar conditions, excess addition of CHO to <b>3-Hf</b> formed a CHO adduct of <b>5-Hf</b> species (<b>6-Hf</b>) and at 80 °C led further toward another metalate intermediate, [PPN][({κ³-O,C,O}-NHC)HfCl(OC₆H₁₀Cl)₂] <b>7-Hf</b>. Kinetic studies revealed the first-order dependence in both the catalyst and CHO concentrations and zero-order dependence in CO₂ with a Gibbs free energy of 24.4 kcal·mol^–1 at 80 °C. DFT calculations performed on the catalytic system suggest <b>7-Hf</b> to be one of the key active catalytic species favoring CO₂ insertion during copolymerization.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"44 1","pages":"68–81 68–81"},"PeriodicalIF":2.5,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.organomet.4c00371","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143091684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Cyclic (Alkyl)(amino)carbene-Stabilized Copper–Iron Heterobimetallic Complexes and Their Application in Pyridine Hydroboration","authors":"Ankita Sharma,&nbsp;Vikas Tiwari,&nbsp;Ritu Yadav,&nbsp;Bindusagar Das,&nbsp;Chinmoy Majumder,&nbsp;Ayantika Das,&nbsp;Tarak Karmakar* and Subrata Kundu*,&nbsp;","doi":"10.1021/acs.organomet.4c0041310.1021/acs.organomet.4c00413","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00413https://doi.org/10.1021/acs.organomet.4c00413","url":null,"abstract":"<p >In this report, we synthesized heterobimetallic complexes supported by cyclic and bicyclic (alkyl)(amino)carbenes (CAAC and ^<i>Et</i>BICAAC) [(^<i>Me2</i>CAAC)CuFe(η⁵-C₅H₅)(CO)₂](<b>1</b>) and [(^<i>Et</i>BICAAC)CuFe(η⁵-C₅H₅)(CO)₂] (<b>2</b>), respectively, featuring an iron–copper bond. Complex <b>1</b> demonstrates catalytic activity for selective 1,4-hydroboration reactions of pyridine derivatives. Detailed computational studies provide additional insights into the electronic structure of complexes <b>1</b> and <b>2</b> and elucidate the catalytic pathway.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"43 23","pages":"3054–3061 3054–3061"},"PeriodicalIF":2.5,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"N-Heterocyclic Carbene-Au(I)-Phosphine Complexes: Characterization, Theoretical Structure Analysis, and Anti-Cancer Properties","authors":"Mohammad Reza Yousefshahi,&nbsp;Mahdi Cheraghi,&nbsp;Tahereh Ghasemi,&nbsp;Abdollah Neshat*,&nbsp;Vaclav Eigner,&nbsp;Michal Dusek,&nbsp;Mehrnaz Amjadi and Shiva Akbari-Birgani,&nbsp;","doi":"10.1021/acs.organomet.4c0040510.1021/acs.organomet.4c00405","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00405https://doi.org/10.1021/acs.organomet.4c00405","url":null,"abstract":"<p >Derivatization of (NHC)Au–Cl with monodentate and bidentate phosphine donors, such as PPh₂Py, PPh₃, PCy₃, and dppf, produced heteroleptic mononuclear and binuclear Au(I) complexes. The order of mixing reactants and the types of solvents used play crucial roles in obtaining a pure product. In the single-crystal X-ray diffraction analysis of complexes <b>1</b>, <b>2</b>, and <b>4</b>, the Au(I) centers exhibited linear geometry. Advanced computational analysis of these complexes using density functional methods provided insights into the nature of electronic transitions, noncovalent interactions, and fragmental bonding contributions. Complexes <b>1</b>–<b>4</b> were selected for biological activity studies, and their in vitro cellular tests were conducted on the human cancerous breast cell line MCF-7, with bimetallic complex <b>4</b> showing the lowest IC₅₀ value of 63 nM and demonstrating the highest inhibitory effect on cell proliferation.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"43 23","pages":"3031–3042 3031–3042"},"PeriodicalIF":2.5,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insertions of Isocyanides in Diamidoamine Rhenium(III) Complexes","authors":"Liana Pauly,&nbsp;Abdullahi K. Adegboyega,&nbsp;Caleb A. Brown,&nbsp;Damaris E. Pérez and Elon A. Ison*,&nbsp;","doi":"10.1021/acs.organomet.4c0033810.1021/acs.organomet.4c00338","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00338https://doi.org/10.1021/acs.organomet.4c00338","url":null,"abstract":"<p >Rhenium(III) complexes of the form (CO)Re(DAAm) (R) <b>1</b>_, (DAAm = <i>N</i>¹-mesityl-<i>N</i>²-(2-(mesitylamino)-ethyl)-<i>N</i>²-methylethane-1,2-diamine) (<i>R</i> = benzyl, <b>1a</b>; methyl, <b>1b</b>; 4-OMe-benzyl, <b>1c</b>) react with isocyanides R′NC, (R′ = 2,6-dimethylphenyl, <i>tert</i>-butyl) to give η¹ and η² iminoacyl complexes. When 2,6-dimethylphenylisocyanide reacts with <b>1a</b>, the resulting iminoacyl complex was η² while the reaction with <b>1c</b> leads to an η¹ iminoacyl complex. However, the less bulky isocyanide <i>tert</i>-butyl isocyanide produced only η² iminoacyl complexes with <b>1b</b> and <b>1c</b>. Carbene complexes were obtained by the reaction with methyl triflate. The mechanism for the formation of the iminoacyl complexes in this study was also investigated by DFT (APFD).</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"43 23","pages":"3002–3012 3002–3012"},"PeriodicalIF":2.5,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the Site Selectivity of Arene Oxidation in [(η5-C5Me5)Ir(η6-arene)](OTf)2 Complexes","authors":"Carlota Odena,&nbsp;Marina Perez-Jimenez,&nbsp;Ronghui Lin and Paul J. Chirik*,&nbsp;","doi":"10.1021/acs.organomet.4c0042110.1021/acs.organomet.4c00421","DOIUrl":"https://doi.org/10.1021/acs.organomet.4c00421https://doi.org/10.1021/acs.organomet.4c00421","url":null,"abstract":"<p >The oxidation selectivity of the η⁶-arene ligand in a series of [(η⁵-C₅Me₅)Ir(η⁶-arene)](OTf)₂ complexes to the corresponding [(η⁵-C₅Me₅)Ir(η⁵-phenoxo)](OTf) derivatives was studied as a complementary protocol to metal-catalyzed borylation-oxidation. A series of representative [(η⁵-C₅Me₅)Ir(η⁶-arene)](OTf)₂ compounds was prepared with mono-, di-, and trisubstituted arenes as well as two examples with biphenyls to rationally explore the site selectivity of C(sp²)–H oxidation. The isolated organometallic arene complexes were treated with NaClO₂ and formed the desired iridium η⁵-phenoxo products. While site-selective oxidation was observed for some compounds, most of the iridium complexes yielded a mixture of regioisomers. Regioselectivity was primarily determined by electronic factors, while sterics influenced sites that were electronically similar.</p>","PeriodicalId":56,"journal":{"name":"Organometallics","volume":"43 23","pages":"3067–3073 3067–3073"},"PeriodicalIF":2.5,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}