دورية أكاديمية

Trapping an Elusive Fe(IV)-Superoxo Intermediate Inside a Self-Assembled Nanocage in Water at Room Temperature.

التفاصيل البيبلوغرافية
العنوان: Trapping an Elusive Fe(IV)-Superoxo Intermediate Inside a Self-Assembled Nanocage in Water at Room Temperature.
المؤلفون: Gera R; Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai 400005, India.; Department of Education in Science and Mathematics, Regional Institute of Education - Mysuru, NCERT, Mysuru 570006, India., De P; Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India., Singh KK; Chemical Engineering Division, CSIR-National Chemical Laboratory, Pune, Maharashtra 411008, India.; Chemistry Department, Indian Institute of Technology, Dharwad 580007, India., Jannuzzi SAV; Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, Mülheim an der Ruhr 45470, Germany., Mohanty A; Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai 400005, India., Velasco L; Instituto de Ciencia de Materiales de Madrid Consejo Superior de Investigaciones Científicas Sor Juana Inés de la Cruz, 3, Madrid 28049, Spain., Kulbir; Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India., Kumar P; Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India., Marco JF; Instituto de Quimica Fisica Blas Cabrera, Consejo Superior de Investigaciones Científicas, Serrano 119, Madrid 28006, Spain., Nagarajan K; Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai 400005, India., Pecharromán C; Instituto de Ciencia de Materiales de Madrid Consejo Superior de Investigaciones Científicas Sor Juana Inés de la Cruz, 3, Madrid 28049, Spain., Rodríguez-Pascual PM; Instituto de Ciencia de Materiales de Madrid Consejo Superior de Investigaciones Científicas Sor Juana Inés de la Cruz, 3, Madrid 28049, Spain., DeBeer S; Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, Mülheim an der Ruhr 45470, Germany., Moonshiram D; Instituto de Ciencia de Materiales de Madrid Consejo Superior de Investigaciones Científicas Sor Juana Inés de la Cruz, 3, Madrid 28049, Spain., Gupta SS; Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India., Dasgupta J; Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai 400005, India.
المصدر: Journal of the American Chemical Society [J Am Chem Soc] 2024 Aug 07; Vol. 146 (31), pp. 21729-21741. Date of Electronic Publication: 2024 Jul 30.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: American Chemical Society Country of Publication: United States NLM ID: 7503056 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5126 (Electronic) Linking ISSN: 00027863 NLM ISO Abbreviation: J Am Chem Soc Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Publication: Washington, DC : American Chemical Society
Original Publication: Easton, Pa. [etc.]
مستخلص: Molecular cavities that mimic natural metalloenzymes have shown the potential to trap elusive reaction intermediates. Here, we demonstrate the formation of a rare yet stable Fe(IV)-superoxo intermediate at room temperature subsequent to dioxygen binding at the Fe(III) site of a (Et 4 N) 2 [Fe III (Cl)(bTAML)] complex confined inside the hydrophobic interior of a water-soluble Pd 6 L 4 12+ nanocage. Using a combination of electron paramagnetic resonance, Mössbauer, Raman/IR vibrational, X-ray absorption, and emission spectroscopies, we demonstrate that the cage-encapsulated complex has a Fe(IV) oxidation state characterized by a stable S = 1/2 spin state and a short Fe-O bond distance of ∼1.70 Å. We find that the O 2 reaction in confinement is reversible, while the formed Fe(IV)-superoxo complex readily reacts when presented with substrates having weak C-H bonds, highlighting the lability of the O-O bond. We envision that such optimally trapped high-valent superoxos can show new classes of reactivities catalyzing both oxygen atom transfer and C-H bond activation reactions.
تواريخ الأحداث: Date Created: 20240730 Latest Revision: 20240807
رمز التحديث: 20240807
DOI: 10.1021/jacs.4c05849
PMID: 39078020
قاعدة البيانات: MEDLINE