Inorganic Chemistry Frontiers最新文献

{"title":"Half-Sandwich Scandium Methylidenes","authors":"Gernot Tilman Linus Zug, Sylvia Zeiner, Jonas Reuter, Hartmut Schubert, Caecilia Maichle-Moessmer, Reiner Anwander","doi":"10.1039/d5qi00152h","DOIUrl":"https://doi.org/10.1039/d5qi00152h","url":null,"abstract":"AlMe3 sticks, GaMe3 quits. A series of Lewis acid stabilized scandium methylidenes with commercially available cyclopentadienyl ligands CpR (CpR = C5Me5 (Cp*), C5Me4SiMe3 (Cp’)) were synthesized. The-salt metathesis reaction of new half-sandwich dichloride precursors CpRScCl2(µ−Cl)Li(thf)3 with LiAlMe4 and AlMe3 at ambient temperature yielded [CpRSc(AlMe4)Cl]2. [Cp’Sc(AlMe4)Cl]2 was further methylated at ambient temperature to yield Cp’Sc(AlMe4)Me. At 70 °C, the reaction of CpRScCl2(µ−Cl)Li(thf)3 with LiAlMe4 and AlMe3 led to the formation of Lewis acid stabilized Sc/Al2 methylidenes CpRSc(CH2)(AlMe3)2. The new mixed Sc/Al/Ga methylidene Cp’Sc(CH2)(AlMe3)(GaMe3) was obtained from the reaction of Cp’Sc(AlMe4)Me with GaMe3. When heated, complex Cp’Sc(CH2)(AlMe3)(GaMe3) converted into the Sc/Al methylidene [Cp’Sc(CH2)2AlMe]3via release of the comparatively weak Lewis acid GaMe3 and methane. The core of trimeric [Cp’Sc(CH2)2AlMe]3 can be described as a triscandacyclohexane {Sc(CH2)}3 stabilized by a trialacyclohexane {Al(CH2)}3via Pearson hard/hard matching. Complexes CpRSc(CH2)(AlMe3)2 and [Cp’Sc(CH2)2AlMe]3 differ in rigidity, thermal stability and reactivities toward ketones and Lewis bases. The isolated methylidenes were analyzed by 1H, 13C, 45Sc, and variable temperature 1H NMR spectroscopy, SC-XRD, IR spectroscopy, and elemental analysis. Complexes CpRSc(CH2)(AlMe3)2 feature pronounced Sc---HC α-agostic interactions. The reaction of CpRScCl2(µ−Cl)Li(thf)3 with LiAlMe4 and AlMe3 was investigated viain situ1H and 45Sc NMR spectroscopy.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"183 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Barium(II)-based molecular perovskite energetic compounds for next-generation pyrotechnic materials","authors":"Chen-Xi Yu, Le Ye, Hao Zhuo, Yun-Fan Yan, Wei-Xiong Zhang","doi":"10.1039/d5qi00442j","DOIUrl":"https://doi.org/10.1039/d5qi00442j","url":null,"abstract":"The traditional pyrotechnic compositions formed by mechanically mixing flammable and oxidative agents face problems in complex formulations, inaccurate chemical stoichiometry, and inefficient colour-producing reactions. The emerging molecular perovskite energetic materials embedding ternary ions have evolved into a new platform for developing explosives, propellants, ignitions, and energetic biocides, by taking advantages of easy preparation and high adjustability, nevertheless their potentials in pyrotechnic applications have not been investigated yet. Herein, by assembling barium(II) perchlorate with imidazolium (Him+) and quinuclidinium (Hqe+), respectively, we obtained two new energetic compounds, (Him)(Ba)(ClO4)3 (IBP) in cubic perovskite structure and (Hqe)2(Ba)(ClO4)4 (QBP) in layered perovskite structure. Both IBP and QBP have decomposition peak temperatures exceeding 290 °C and much higher moisture stabilities than barium perchlorate. With the layered structure, QBP has significantly reduced friction sensitivity (144 N) than IBP (5 N). Moreover, the tightly stacking of barium(II), oxidative perchlorate ions, and carbon-rich fuel components at molecular level endows QBP with a high-efficiency and stable combustion outputting a maximum combustion pressure up to 550 kPa, a maximum pressure pulse rate up to 10.48 MPa/s, and a bright green flame. These findings well demonstrated that molecular perovskite energetic compounds integrating luminescent component, oxidative anions, and organic cations are promising contenders for next-generation pyrotechnic materials.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"23 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Albumin-targeted oxaliplatin(IV) prodrugs bearing STING agonists","authors":"Martijn Dijkstra, Michael Gutmann, Mathias Gradl, Anja Federa, Carola Jaunecker, John Vasco Breitenstein, Petra Vician, Christine Pirker, Daniel Valcanover, Petra Heffeter, Bernhard K. Keppler, Walter Berger, Christian R. Kowol","doi":"10.1039/d5qi00433k","DOIUrl":"https://doi.org/10.1039/d5qi00433k","url":null,"abstract":"The anticancer platinum complex oxaliplatin exerts its activity through DNA damage and immune-stimulatory mechanisms, but is associated with adverse treatment side effects. Platinum(<small>IV</small>) complexes represent a promising prodrug strategy to improve tolerability and to enhance antitumor efficacy <em>via</em> attachment of additional bioactive ligands or tumor-targeting moieties. In the present study, oxaliplatin(<small>IV</small>) complexes containing immune-stimulatory STING agonists SR-717 or MSA-2 were synthesized and their biological properties were studied. Whereas the Pt-SR-717 compound was fast reduced, Pt-MSA-2 complexes displayed significantly higher reductive stability reflected by low <em>in vitro</em> cytotoxicity. Although the platinum(<small>IV</small>) complexes activated interferon regulatory factor (IRF) and NF-κB signaling pathways less effectively compared to the free STING agonists, reducing conditions elevated cytotoxicity and STING downstream signaling, particularly for MSA-2-containing prodrugs. Rapid albumin binding of a maleimide-containing Pt-MSA-2 derivative resulted in elevated plasma levels, prolonged blood circulation, and enhanced tumor accumulation of platinum in CT-26 tumor-bearing mice. The Pt-MSA-2 complexes triggered immune activation and cytokine secretion without hematotoxicity usually associated with free oxaliplatin. The albumin-targeted Pt-MSA-2 drug significantly inhibited tumor growth after intravenous application, while the non-maleimide complex was effective only when applied peritumorally. However, the effects were not enhanced compared to mono-treatment with oxaliplatin or MSA-2, indicating a lack of synergism between the two simultaneously released agents. Our results demonstrate that oxaliplatin(<small>IV</small>) complexes represent a valuable strategy for enhanced tumor-targeting and adverse effect reduction, but question the simultaneous release of STING agonists and free oxaliplatin as a potent strategy towards synergistic antineoplastic activity.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"73 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergism between Cyclopentadienyl and Amidinate Ligands Affording the Anionic Scandium Terminal Imido Complexes","authors":"Tianyu Li, Dajiang Huang, Miaomiao Zhu, Junnian Wei, Wen-Xiong Zhang","doi":"10.1039/d5qi00390c","DOIUrl":"https://doi.org/10.1039/d5qi00390c","url":null,"abstract":"Terminal rare-earth imido complexes containing metal nitrogen double bonds have received more attention in recent years due to their importance in group transformation and catalytic reactions. However, due to the large difference in orb ital energy between rare-earth metals and nitrogen, their synthesis is difficult and the product is easy to polymerize. Here we use the combination of Cp* and amidine ligands to inhibit the tetramerization and provide exclusively the first anionic rare-earth(III) terminal imido complexes with both electro-donating and electron-withdrawing groups. The chemical bond analysis further confirms the double bond character and the strong polarity of the RE=N bond, which could be described as three orbital interactions, is primarily contributed from the imido nitrogen, while the contribution from rare-earth metal is limited. The mechanistic study by DFT calculations shows the formation of the RE=N bond undergo the activation of two N– H bonds. Furthermore, the anionic rare-earth(III) terminal imido complex shows some interesting and unique reactivity towards isocyanate, isonitrile, phenylsilane, and W(CO)6. The work extends the multiple bond chemistry between rare-earth metals and main group elements, and is expected to inspire the development of rare-earth organometallic chemistry and related fields.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"29 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D bead-like Cu2S/NC nanofiber fabric as an interlayer for fabricating dendrite-free lithium metal anodes","authors":"Junzhuo Jiang, Junfan Wei, Yuan Tian, Cheng Wang","doi":"10.1039/d5qi00471c","DOIUrl":"https://doi.org/10.1039/d5qi00471c","url":null,"abstract":"Uncontrollable lithium dendrite growth and huge volume changes hinder the practical applications of lithium metal anodes. Herein, a 3D bead-like nitrogen-doped carbon nanofiber fabric modified with Cu<small>₂</small>S nanocubes (Cu<small>₂</small>S/NCs) was successfully designed as an interlayer between the separator and lithium metal anode. The 3D porous conductive structure could relieve the volume change in the electrode and reduce local current density. Cu<small>₂</small>S implanted into the framework as lithophilic sites induced uniform Li nucleation/deposition and inhibited lithium dendrite growth. The Cu<small>₂</small>S/NC interlayer could achieve a stable solid–electrolyte interphase (SEI) layer for protecting the lithium metal anode. As a result, a higher coulombic efficiency exceeding 99% after 250 cycles at a current density of 1.0 mA cm<small>⁻²</small> and a capacity of 1.0 mA h cm<small>⁻²</small> as well as a prolonged lifespan of over 2500 h for a Li||Li symmetric cell with the Cu<small>₂</small>S/NC interlayer could be realized. The full cell coupled with LiFePO<small>₄</small> exhibited an outstanding rate capability up to 5.0 C and long-term electrochemical cycling stability for over 1200 cycles.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"34 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surfactant-Assisted Synthesis of Semiconductor Hybrid Cd/Hg-Selenidostannates with Enhanced Optoelectronic and Piezoelectric Properties","authors":"Mohamed Saber Lassoued, Yue-Qiao Hu, FAIZAN AHMAD, Yan-Zhen Zheng","doi":"10.1039/d5qi00444f","DOIUrl":"https://doi.org/10.1039/d5qi00444f","url":null,"abstract":"Multifunctional compounds have attracted significant attention for their wide-ranging applications in advanced technologies. In this study, we synthesized two semiconductor hybrid Cd/Hg-selenidostannates, (H2BPP)2CdSn3Se9 and (H2DMP)2Hg4Sn4Se17, employing 1, 3-bis(4-piperidinyl) propane and 1, 5-diamino-2-methylpentane through a surfactant-assisted thermal method. Remarkably, these hybrid chalcogenides are highly soluble in DMF, facilitating the formation of smooth, pinhole-free thin films via spin-coating method. (H2BPP)2CdSn3Se9 and (H2DMP)2Hg4Sn4Se17 films exhibit exceptional stability under high humidity and heat, with semiconducting band gaps of 2.12 eV and 2.21 eV, respectively. These band gaps enable strong light absorption and charge carrier generation, which directly contribute to their significant photocurrent responses. Specifically, Photocurrent measurements show Ilight of 1.5 µA cm⁻² and 1 µA cm⁻² at 0.8 V for (H₂BPP)₂CdSn₃Se₉ and (H₂DMP)₂Hg₄Sn₄Se₁₇, notably higher than the 0.30 mA cm² observed for the commercially available SnSe₂ electrode under the same conditions. Building on these interesting electrical properties, (H2BPP)2CdSn3Se9 also showed notable piezoelectric properties, resulting from its unique structural framework that supports both efficient charge transport and mechanical responsiveness. These promising stability and multifunctional characteristics highlight the potential of these hybrid selenidostannates for advanced optoelectronic and piezoelectric applications.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"34 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Na2PbB6O10SO4 and Ca2.58Pb0.42B6O11SO4: First Borate-Sulfates Featuring 3D Porous Borate Anionic Frameworks","authors":"Huan Pei, Zijian Li, Shaohuan Liu, Xueling Hou, Fangfang Zhang","doi":"10.1039/d5qi00394f","DOIUrl":"https://doi.org/10.1039/d5qi00394f","url":null,"abstract":"This study presents two new borate-sulfate compounds, Na2PbB6O10SO4 (I) and Ca2.58Pb0.42B6O11SO4 (II). Both crystals form unique three-dimensional (3D) porous frameworks 3[B6O10]∞ and 3[B7O13]∞, composed by fundamental building blocks [B6O13] and [B7O17], respectively, with [SO4] units embedded within the pores. These examples represent the first observation of 3D borate frameworks in borate-sulfates, thus expanding the structural diversity of borate-sulfate compounds. The relationship between structure and birefringence was studied using first-principles calculations. This study uncovers new insights into the connectivity and structural properties of borate-sulfates.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"108 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brønsted base tuning the local reaction environment to enhance neutral water oxidation","authors":"Mei Han, Kangning Liu, Yongchang Liu, Hongyan Liang","doi":"10.1039/d5qi00320b","DOIUrl":"https://doi.org/10.1039/d5qi00320b","url":null,"abstract":"The neutral oxygen evolution reaction (OER) in lower OH−-concentration environments suffers from sluggish reaction kinetics, presenting significant challenges for the design of efficient and low-cost electrocatalysts. Effectively manipulating the local reaction environment could provide a promising solution. Here, we report a Brønsted base silicate (SiO₃²⁻)-modified NiFe(OH)x catalyst. As a proton acceptor, Brønsted base SiO₃²⁻ accelerates the cleavage of OH-H bonds at Ni/Fe sites (*H2O → *OH + H+ + e−), thereby facilitating *OH accumulation and enhancing the local *OH-enriched reaction environment. With these advantages, the optimized NiFe(OH)x-SiO32- catalyst exhibits a low OER overpotential of 280 mV at 10 mA cm⁻², a 150 mV reduction compared to the unmodified NiFe(OH)x catalyst. Furthermore, the membrane electrode assembly electrolyzer using NiFe(OH)x-SiO32-||Pt/C achieves an energy conversion efficiency of 69.2% and a current density of 1.0 A cm⁻² at 1.81 V, maintaining stable performance over 240 hours with a negligible degradation. The strategy of Brønsted base SiO₃²⁻ modification offers a promising and cost-effective approach for enhancing the efficiency of neutral water electrolysis.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"32 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-Valent Tantalum/Gold Clusters: Oxidation, Protonation, and C–H Activation","authors":"Michela L. Maiola, Joshua A. Buss","doi":"10.1039/d5qi00334b","DOIUrl":"https://doi.org/10.1039/d5qi00334b","url":null,"abstract":"Gold-based catalysts are topical heterogeneous and molecular species, the chemical diversity of which can be expanded through heterometal doping. Herein, we leverage a carbonyl-free metal-metal salt metathesis protocol to access rare examples of low-valent tantalum/gold multimetallics. The initial reaction between [Ta(naphthalene)<small>₃</small>]<small>^–</small> and gold(I) synthons affords a trimetallic monohydride cluster (<strong>2</strong>). Whereas dihydrogen addition to <strong>2</strong> results in deauration <em>en route</em> to a Ta-µH<small>₂</small>-Au complex (<strong>1</strong>), oxidative transformations—either addition of chemical oxidants or cluster protonation—conserve the trimetallic core, even in the absence of a polynucleating ligand. The resultant series of compounds provide experimental anchors for computational interrogation of polarized metal-metal interactions as a function of metal identity, formal oxidation state, and ligand sphere. The electronic structure of these clusters showcases significant Ta-arene covalency, even at higher oxidation states, rationalizing a recalcitrance to undergo ligand substitution. Furthermore, the addition of <em>in situ</em> generated Au<small>⁺</small>to<small></small><strong>2</strong> results in an arene C–H activation process, highlighting that the naphthalene ligands in these complexes are simultaneously substitutionally inert and prone to functionalization.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"101 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lattice interconversion of 1D ferrocene-based perovskite induced by solvent molecules for selectively photocatalytic toluene oxidation","authors":"Yan-Li Yang, Ke-Ke Guo, Xue Bai, Ange Zhang, Ying Lu, Maochun Zhu, Shuxia Liu","doi":"10.1039/d5qi00148j","DOIUrl":"https://doi.org/10.1039/d5qi00148j","url":null,"abstract":"Metal halide perovskites (MHPs) have attracted enormous attention in the field potential applications of optoelectronics and photocatalysis due to their excellent optoelectronic performances, such as broad light absorption range, high charge mobility and long carrier diffusion length. However, using MHPs as photocatalysts for photocatalytic toluene oxidation is rare and the underlying mechanisms affecting toluene oxidation are still unclear. In this article, we constructed two novel one dimensional (1D) Ferrocene-based Perovskites catalysts, (C13H17FeNH)PbI3 and (C13H17FeNH)PbI3•DEF, in which (C13H17FeNH)PbI3 can photocatalyze the oxidation of toluene to benzaldehyde effectively. It's interesting that the crystal lattice of (C13H17FeNH)PbI3 and (C13H17FeNH)PbI3•DEF can be converted to each other through the gain and loss of solvent molecules, which not only regulates the electronic band structure, but also increases the separation efficiency of photogenerated carriers. These results were confirmed by the steady-state photoluminescence (PL), the time-resolved photoluminescence (TRPL) spectra, transient photocurrent responses measurements and density functional theory (DFT) calculations. In addition, the lower exciton binding energy (43.2 meV) of (C13H17FeNH)PbI3 further demonstrates its effective carriers’ separation efficiency. Furthermore, the selective adsorption of (C13H17FeNH)PbI3 on toluene and benzaldehyde provides a prerequisite for the efficient selective oxidation of toluene. Finally, (C13H17FeNH)PbI3 exhibited excellent catalytic activity for the photocatalytic oxidation of toluene to benzaldehyde with conversion of 28.5% and the selectivity (95.3%) towards benzaldehyde.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"97 6 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}