{"title":"Heavier Benzene-1,4-diides: Merging Aromatics and Metallylenes","authors":"Rajendra S. Ghadwal","doi":"10.1002/ejic.202500002","DOIUrl":"https://doi.org/10.1002/ejic.202500002","url":null,"abstract":"<p>Heavier benzene (i. e. Group 14 aromatics) and carbene analogues (i. e. metallylenes) have been intriguing species in fundamental main group chemistry. The stability of Group 14 metallylenes (R<sub>2</sub>E) enhances with increasing the principal quantum number (E=Si<Ge<Sn<Pb) owing to the so-called inert-pair effect. However, the increasing size difference between carbon and a heavier Group 14 element (Si<Ge<Sn<Pb) leads to inefficient π<sub>E</sub>–π<sub>C</sub> interactions and poor delocalization of π-electrons. Combining both aromatic and metallylene features in the same molecule, for instance the heavier analogues of benzene-1,4-diide (C<sub>6</sub>H<sub>4</sub>)<sup>2–</sup> that results by the two-fold 1,4-deprotonation of benzene, remained however an uncharted research area. The successful isolation of such compounds calls for innovative design-concepts for the development of suitable ligand scaffolds. The aim of this Concept Article is to showcase the recent developments in the field and to provide the reader an overview on the structure and properties of a new class of heavier aromatics with two-coordinated Group 14 elements in a formally +1 oxidation state.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 12","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202500002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erik Strub, Désirée Badea, Jörn Bruns, Antonio Frontera, Natalia Mayordomo, Anna Sakhonenkova, Maximilian Roca Jungfer, Mathias Wickleder, Clarence Yong, Markus Zegke
{"title":"Technetium - The Unknown Center of the Periodic Table","authors":"Erik Strub, Désirée Badea, Jörn Bruns, Antonio Frontera, Natalia Mayordomo, Anna Sakhonenkova, Maximilian Roca Jungfer, Mathias Wickleder, Clarence Yong, Markus Zegke","doi":"10.1002/ejic.202400780","DOIUrl":"https://doi.org/10.1002/ejic.202400780","url":null,"abstract":"<p>It took 78 years from Mendeleev's proposal of an existence of “eka-manganese” (1869) until it was finally named as technetium (Tc) in 1947. Another 78 years have passed since then. This provides a good occasion to pinpoint what we know and what we still do not know of this radioelement. Technetium is placed near the center of the Periodic Table, in the center of the groups 6, 7, and 8. Some chemical properties of the elements surrounding technetium show trends within the columns or along the rows of the Periodic Table, but a consistent interpretation of these trends is lacking as long as the knowledge on technetium remains incomplete. This is especially remarkable as, on the other hand, the isotope <sup>99m</sup>Tc is applied on a daily basis in nuclear medicine. The aim of this paper is to review the fundamental understanding of technetium chemistry, mostly focusing on the research of the last decade, its implications, and its future perspectives. These developments show a picture of growing connections between physicochemical data, fundamental inorganic chemistry, organometallic and coordination chemistry, computational chemistry, and geochemistry.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 9","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202400780","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marta Pawlak, Joanna Drzeżdżon, Anna Gołąbiewska, Katarzyna N. Jarzembska, Radosław Kamiński, Tomasz Pospieszny, Janusz Datta, Dagmara Jacewicz
{"title":"Synthesis of a New Cobalt(II) Complex Compound Containing 2,2′-Bipyridyl Ligand and Its Catalytic Properties in the Formation of CO2-Sorbing Oligomers","authors":"Marta Pawlak, Joanna Drzeżdżon, Anna Gołąbiewska, Katarzyna N. Jarzembska, Radosław Kamiński, Tomasz Pospieszny, Janusz Datta, Dagmara Jacewicz","doi":"10.1002/ejic.202400755","DOIUrl":"https://doi.org/10.1002/ejic.202400755","url":null,"abstract":"<p>As an element, cobalt has a very interesting coordination chemistry and great potential to participate in the formation of a variety of complex compounds, that play a significant role in the synthesis of catalytic systems. In the present work, a new cobalt(II) complex compound with an unusual and rare structure, not previously described in the literature, was synthesized. This complex has two 2,2′-bipyridyl ligands, a water molecule and, most interestingly, a sulfate(VI) anion in the Co(II) coordination sphere. Its use and catalytic properties were studied in the oligomerization of selected olefins, where it acted as a precatalyst. The achieved catalytic activity values were rather high (<100 g mmol<sup>−1</sup> h<sup>−1</sup> ⋅ bar<sup>−1</sup>), except for the oligomerization process of 2,3-dibromo-2-propen-1-ol using MAO. The obtained oligomers were subjected to structural (FT-IR, SEM, MALDI-TOF-MS) and thermal (TG, DSC) analysis, and the results allowed to characterize their physicochemical properties. The conducted process allowed to determine the effect of the applied activator on the catalytic activity, as well as the structural and thermal properties of the obtained oligomers. In addition, the specific surface area and sorption properties of the oligomerization products were studied, and one of them showed very high CO<sub>2</sub> sorption values (<1.6 mmol g<sup>−1</sup>).</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 11","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dr. Yoshimasa Wada, Eri Matsuo, Prof. Dr. Yusuke Sunada
{"title":"Effects of Heavier Congeners on the Structural and Photophysical Properties of Visible-Light-Absorbing Dinuclear Complexes of Group-12 Elements","authors":"Dr. Yoshimasa Wada, Eri Matsuo, Prof. Dr. Yusuke Sunada","doi":"10.1002/ejic.202400666","DOIUrl":"https://doi.org/10.1002/ejic.202400666","url":null,"abstract":"<p>Unlike most <i>d</i>-block metal complexes, group-12 metal complexes exhibit a lack of visible light absorption involving atomic orbital of metal center, despite the growing demand for visible light-driven photofunctional materials. To overcome this limitation, we previously developed a dinuclear Zn(II) complex that absorbs visible light through an empty <i>σ</i> orbital formed between two proximal Zn atoms and exhibits dual emission at 77 K. However, the roles of the central metal atom in influencing the structural and photophysical properties were not fully investigated. In this study, we synthesized a dinuclear Cd(II) complex, structurally analogous to the Zn(II) complex, to investigate the effects of the central metal atoms on these properties. Structural analyses revealed that both complexes are highly similar, with slightly elongated Cd–Cd distances because of Cd's larger van der Waals radius. Theoretical calculations indicated attractive intermetallic interactions between the central metal atoms in both complexes. Although both complexes displayed negligibly different visible light absorptions, the Cd(II) complex displayed a much higher intersystem crossing rate than the Zn(II) complex, generating distinctly different overall emission profiles. These findings emphasize the crucial roles of the central metal atoms in influencing the structural and photophysical behaviors of dinuclear complexes, providing deeper insights for designing group-12-element-based materials.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 7","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202400666","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yumeng Ren, Dr. Geng Chen, Yudong Lu, Kun Li, Zhaoyang Li, Dr. Yingying Zhu
{"title":"One-step Synthesis, Characterization and Ammonia-selective Catalytic Reduction Performance of Cu-SAPO-34 Catalyst","authors":"Yumeng Ren, Dr. Geng Chen, Yudong Lu, Kun Li, Zhaoyang Li, Dr. Yingying Zhu","doi":"10.1002/ejic.202400576","DOIUrl":"https://doi.org/10.1002/ejic.202400576","url":null,"abstract":"<p>The Cu-SAPO-34 catalyst, a promising selective catalytic reduction (SCR) catalyst for the denitration of mobile sources, has attracted widespread research interest due to its wide temperature window, remarkable catalytic performance and good stability. In this study, a series of Cu-SAPO-34 catalysts with varying Cu contents were synthesized by the one-step hydrothermal method. The physicochemical properties of the catalysts were investigated by characterizations, and the reasons for the well-activity catalysts were analyzed. The acidic sites on the SAPO-34 zeolite can adsorb and activate NH<sub>3</sub>, while the copper active sites can promote the activation and reduction of NO<sub>x</sub>, accelerating the reaction process of SCR. In this study, Cu-SAPO-34 with Cu content of n(Cu)/n(C<sub>9</sub>H<sub>21</sub>AlO<sub>3</sub>)=0.075 has good framework stability, which produced more free Cu<sup>2+</sup> ions and the Cu species are evenly distributed on the carrier surface, and the appropriate amount of acid sites. Therefore, the Cu<sub>0.075</sub>-SAPO-34 catalyst exhibits the highest NO conversion performance, maintaining a NO conversion rate above 90 % within the temperature range of 165–450 °C.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 6","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sriram Sundaresan, Julian Eppelsheimer, Luca M. Carrella, Eva Rentschler
{"title":"A Hobson's Choice Co-Ligand in Imparting Spin Crossover in Fe(II) Complexes Based on 1,3,4-Oxadiazole Ligands","authors":"Sriram Sundaresan, Julian Eppelsheimer, Luca M. Carrella, Eva Rentschler","doi":"10.1002/ejic.202400690","DOIUrl":"https://doi.org/10.1002/ejic.202400690","url":null,"abstract":"<p>In this manuscript we report the synthesis of three methanol solvatomorphs of Fe(II) complexes with the 2-(2-phenyl)-5-[N,N-bis(2-pyridylmethyl)aminomethyl]-1,3,4-oxadiazole (<b>L<sup>Ph−ODA</sup></b>) ligand and three different NCE co-ligands where E=S, Se and BH<sub>3</sub> (<b>C1</b>–<b>C3</b>). The complexes obtained were characterized by single crystal X-ray crystallography and SQUID magnetometry between 2 and 300 K. Complexes <b>C1</b> and <b>C2</b> remain in the high spin state over the entire measured temperature window, whereas complex <b>C3</b> exhibits a solvent dependent spin transition with a T<sub>1/2</sub> of 166 K. Upon heating the sample to 400 K and removing methanol, the complex exhibited a two-step spin transition with the first step having a T<sub>1/2</sub> of 215 K and a second step having a T<sub>1/2</sub> of 137 K.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 7","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202400690","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
María-Teresa Chicote, Delia Bautista, José Vicente, Isabel Saura-Llamas
{"title":"Searching for New Four-membered Palladacycles Derived from Anilines: Influence of the N-Substituents in the Reaction Outcome","authors":"María-Teresa Chicote, Delia Bautista, José Vicente, Isabel Saura-Llamas","doi":"10.1002/ejic.202400719","DOIUrl":"https://doi.org/10.1002/ejic.202400719","url":null,"abstract":"<p>The reactions of iodoanilines IC<sub>6</sub>H<sub>4</sub>NRR′-2 with [Pd(PPh<sub>3</sub>)<sub>4</sub>] gave complexes [Pd(C<sub>6</sub>H<sub>4</sub>NRR′-2}I(PPh<sub>3</sub>)<sub>2</sub>] [R=H, R’=H (<b>1 a</b>), Me (<b>1 b</b>); R=R’=Me (<b>1 c</b>)] while a mixture of <b>1 a</b>, and the dimeric [Pd{μ-<i>C,N</i>-C<sub>6</sub>H<sub>4</sub>NH<sub>2</sub>-2)I(PPh<sub>3</sub>)]<sub>2</sub> (<b>2 a</b>) was obtained when the appropriate iodoaniline was reacted with [Pd(dba)<sub>2</sub>] (dba=dibenzylideneacetone) and 1 equiv. of PPh<sub>3</sub>. The phosphonium salts [Ph<sub>3</sub>PC<sub>6</sub>H<sub>4</sub>NRMe-2]OTf [R=H (<b>3 b</b>), Me (<b>3 c</b>)] formed upon reacting complexes <b>1 b,c</b> with TlOTf (OTf=CF<sub>3</sub>SO<sub>3</sub>). Complexes of the type [Pd(C<sub>6</sub>H<sub>4</sub>NRR′-2}I(N N)] (<b>4</b>) were obtained from the reaction of [Pd(dba)<sub>2</sub>] with the appropriate iodoaniline and a N N bidentate ligand (N N=4,4′-di-<i>tert</i>-butyl-2,2′-bipyridine or <i>N</i>,<i>N</i>,<i>N</i>′,<i>N</i>′-tetramethylethylenediamine). Complexes <b>4</b> reacted with TlOTf and PPh<sub>3</sub> or XyNC (Xy=C<sub>4</sub>H<sub>4</sub>Me<sub>2</sub>-2,6) to give [Pd(C<sub>6</sub>H<sub>4</sub>NRR′-2)(N N)(PPh<sub>3</sub>)]OTf (<b>5</b>) or [Pd{<i>C,N</i>-C(=NHXy)C<sub>6</sub>H<sub>4</sub>NRR′-2)(N N)]OTf (<b>6</b>), respectively. In the absence of any added ligand, the reactions of complexes <b>4</b> with TlOTf produced the dimeric complexes [Pd{μ-<i>C,N</i>-C<sub>6</sub>H<sub>4</sub>NHR-2)(N N)]<sub>2</sub>(OTf)<sub>2</sub> (<b>7</b>) or the four-membered palladacycles [Pd(<i>κ</i><sup>2</sup>-C<sub>6</sub>H<sub>4</sub>NMe<sub>2</sub>-2)(N N)]OTf (<b>8</b>), depending on the substitution degree of the aniline reagent.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 6","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Front Cover: Solid-State Ion Exchange of Organic Ammonium Cations in Molecular Crystals (Eur. J. Inorg. Chem. 4/2025)","authors":"Mizuki Ito, Jun Manabe, Katsuya Inoue, Yin Qian, Xiao-Ming Ren, Tomoyuki Akutagawa, Takayoshi Nakamura, Sadafumi Nishihara","doi":"10.1002/ejic.202580401","DOIUrl":"https://doi.org/10.1002/ejic.202580401","url":null,"abstract":"<p><b>The Front Cover</b> illustrates a claw machine extracting a three-dimensional object, shaped to match its claw, from water. This visual symbolizes a Li<sub>2</sub>([18]crown-6)<sub>3</sub>[Ni(dmit)<sub>2</sub>]<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub> crystal, whose channel structure, formed by aligned [18]crown-6 molecules (orange rings), enables selective ion exchange. The crystal selectively incorporates MeNH<sub>3</sub><sup>+</sup> from a mixture of organic cations (MeNH<sub>3</sub><sup>+</sup>, EtNH<sub>3</sub><sup>+</sup>, <i>n</i>PrNH<sub>3</sub><sup>+</sup>) in aqueous solution, maintaining its crystalline integrity. More information can be found in the Research Article by S. Nishihara and co-workers.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ejic.202580401","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jin-Hua Liu, Dan Liu, Ming-Yue Yu, Li Liu, Yan-Qing Wang, Yan-Fang Huo, Shi-Qi Sun, Sha-Sha Hao
{"title":"Manganese-Resorcin[4]Arene-Based Metal-Organic Framework: Syntheses, Structure and Lithium-Ion Battery Application","authors":"Jin-Hua Liu, Dan Liu, Ming-Yue Yu, Li Liu, Yan-Qing Wang, Yan-Fang Huo, Shi-Qi Sun, Sha-Sha Hao","doi":"10.1002/ejic.202400785","DOIUrl":"https://doi.org/10.1002/ejic.202400785","url":null,"abstract":"<p>By employing a dodecarboxylic acid substituted resorcin[4]arene ligand (<b>L</b>), a new metal-organic framework (MOF), [Mn<sub>6</sub>(L)(H<sub>2</sub>O)<sub>14</sub>] ⋅ DMA ⋅ 5H<sub>2</sub>O (defined as <b>Mn</b>-<b>L</b>) has been synthesized under solvothermal conditions. <b>Mn</b>-<b>L</b> shows a 3D framework with abundant carboxyl groups, which result in the excellent electrochemical performance as anode materials in lithium ion batteries (LIBs). The activated <b>Mn-L</b> maintains the specific capacities of 598 mAh/g at 200 mA/g after 150 runs and 420 mAh/g at 500 mA/g after 350 runs. The excellent rate capacity, cyclic stability enable <b>Mn</b>-<b>L</b> to be prospective anode material for LIBs.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 9","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synthesis, Fluorescence Regulation and White-Light Emission of Ln-MOFs Incorporating Trivalent Rare Earth Ions (Ln3+, Eu3+, Tb3+)","authors":"Dan-Feng He, Yi-Wei Liu, Ting-ting Zheng, Xu-gang Chen, Fu-Jiang Zhou, Li Li, Hui Xu","doi":"10.1002/ejic.202400757","DOIUrl":"https://doi.org/10.1002/ejic.202400757","url":null,"abstract":"<p>This study reports on the synthesis, fluorescence modulation, and white-light emission characteristics of a series of isostructural lanthanide-based metal-organic frameworks (Ln-MOFs). The synthesized materials demonstrated exceptional color rendering capabilities, design flexibility, color tunability, and high fluorescence efficiencies. Through strategic doping, a range of mono- and co-doped complexes were successfully obtained, enabling precise tuning of the fluorescence properties. An optimized white-light-emitting material was developed based on the additive color mixing principle of the three primary colors. The fluorescence attributes, including brightness, luminescence lifetime, quantum yield, and color purity, were comprehensively evaluated. Furthermore, the complexes exhibited notable fluorescence quenching effects in response to Cd<sup>2+</sup> ions, highlighting their potential as sensors for the detection of cadmium ions in complex metal ion solutions. This research offers valuable insights into the advancement of Ln-MOFs for applications in white-light emission and fluorescence-based sensing.</p>","PeriodicalId":38,"journal":{"name":"European Journal of Inorganic Chemistry","volume":"28 7","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}