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Ultrasound-promoted solvent-free synthesis of some new α-aminophosphonates as potential antioxidants 超声促进无溶剂合成一些新型α-氨基膦酸盐作为潜在抗氧化剂
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0018
Meson Haji Basha, C. Subramanyam, K. P. Rao
{"title":"Ultrasound-promoted solvent-free synthesis of some new α-aminophosphonates as potential antioxidants","authors":"Meson Haji Basha, C. Subramanyam, K. P. Rao","doi":"10.1515/mgmc-2020-0018","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0018","url":null,"abstract":"Abstract Ultrasonic irradiation has been adopted in order to achieve an efficient synthesis of some novel α-aminophosphonates by Pudovik reaction. Major benefits of this method are as follows: eco-friendly, free of catalyst, high yielding, uncomplicated work-up procedure, short reaction time, and solvent free condition. Spectral characterisation and elemental analysis of the synthesized samples was carried out. In vitro antioxidant activity of the title compounds was screened by DPPH˙, O2-˙ and NO˙ scavenging methods. Good activity was shown by most of the compounds as compared with the standards.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"147 - 153"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49478633","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}
引用次数: 10
Magnetically recoverable nanostructured Pd complex of dendrimeric type ligand on the MCM-41: Preparation, characterization and catalytic activity in the Heck reaction MCM-41上可磁性回收的树枝状配体纳米Pd配合物的制备、表征及其在Heck反应中的催化活性
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0023
M. Abdollahi-Alibeik, Najmeh Gharibpour, Zahra Ramazani
{"title":"Magnetically recoverable nanostructured Pd complex of dendrimeric type ligand on the MCM-41: Preparation, characterization and catalytic activity in the Heck reaction","authors":"M. Abdollahi-Alibeik, Najmeh Gharibpour, Zahra Ramazani","doi":"10.1515/mgmc-2020-0023","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0023","url":null,"abstract":"Abstract A palladium complex of a dendrimer type ligand of aminoethylacrylamide immobilized onto the mesoporous channels of MCM-41 with magnetic core was prepared and characterized using various techniques such as XRD, TEM, BET, FT-IR, TGA, and VSM. The prepared nanostructured material was found as a magnetically recoverable catalyst for Heck reaction of aryl halides and vinylic C–H. The catalyst is easily recoverable with an external magnet and is reusable with different leaching amounts depending to loading of Pd. A hot filtration test was also performed and gave evidence that Palladium in heterogeneous samples can dissolve and then redeposit on the surface of the support material. Graphical Abstract","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"184 - 199"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43564588","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}
引用次数: 4
Synthesis of pyrimidines by Fe3O4@SiO2-L-proline nanoparticles 嘧啶的合成Fe3O4@SiO2-L-proline纳米粒子
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0014
J. Safaei‐Ghomi, Z. Samadi
{"title":"Synthesis of pyrimidines by Fe3O4@SiO2-L-proline nanoparticles","authors":"J. Safaei‐Ghomi, Z. Samadi","doi":"10.1515/mgmc-2020-0014","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0014","url":null,"abstract":"Abstract Fe3O4@SiO2-L-proline nanoparticles have been used as an effective catalyst for the preparation of pyrimidines by three-component reactions of 1,3-dimethylbarbituric acid, aromatic aldehydes and 4-methyl aniline or 4-methoxy aniline under reflux condition in ethanol. Fe3O4@SiO2-L-proline nanoparticles have been characterized by scanning electronic microscopy (SEM), powder X-ray diffraction (XRD), vibrating sample magnetometer (VSM), thermal gravimetric analysis (TGA), energy dispersive X-ray (EDS), dynamic light scattering (DLS) and FT-IR spectroscopy. This method provides several advantages including, the reusability of the catalyst, low catalyst loading, atom economy, short reaction times and high yields of products.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"117 - 124"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47996812","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}
引用次数: 2
Synthesis and structural characterization of dialkyltin complexes of N-salicylidene-L-valine N-亚水杨基-L-缬氨酸二烷基锡配合物的合成及结构表征
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0017
Laijin Tian, Ruili Wang, Jiawei Zhang, Fubi Zhong, Yu-Qin Qiu
{"title":"Synthesis and structural characterization of dialkyltin complexes of N-salicylidene-L-valine","authors":"Laijin Tian, Ruili Wang, Jiawei Zhang, Fubi Zhong, Yu-Qin Qiu","doi":"10.1515/mgmc-2020-0017","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0017","url":null,"abstract":"Abstract The synthesis and characterization of five new chiral dialkyltin complexes of N-salicylidene-L-valine, [2-O-3-R-5-R'C6H2C(H)=NCH(CH(CH3)2)C(O)O]SnR''2 (R, R', R'' = H, H, Me (1); H, Br, Me (2); OMe, H, Et (3); Br, Br, n-Bu (4); CH(OMe)2, Me, n-Bu (5)), have been reported. Compounds 1-5 are all (S)-enantiomers, and their crystal structures have been studied. Compound 1 displays a trimeric macrocyclic structure in which the coordination environment of each tin atom is a distorted [SnC2NO3] octahedron. In complexes 2-5, the tin atom has an intermediate geometry between trigonal bipyramidal and square pyramidal, and 3 is closer to a square pyramid. In crystals, a zigzag supramolecular chain is formed by the intermolecular C-H…O, O-H…O or Sn…O interactions.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"138 - 146"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43710755","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}
引用次数: 5
Abnormally aggregation-induced emissions observed from hydrogen- and silyl-substituted siloles 从氢和硅基取代的硅井观察到异常聚集引起的排放
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0015
Zhengang Han, Kefeng Xie
{"title":"Abnormally aggregation-induced emissions observed from hydrogen- and silyl-substituted siloles","authors":"Zhengang Han, Kefeng Xie","doi":"10.1515/mgmc-2020-0015","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0015","url":null,"abstract":"Abstract Silacyclopentadienes (siloles) are currently of great interest because of their intriguing aggregation-induced emission (AIE) characteristics. In this work, abnormally AIE phenomena were observed from silyl- and hydrogen-substituted siloles respectively. We propose silyl-substituent and hydrogen atom effects to explain this via both experiments and theoretical calculations. It was discovered that trimethylsilyl substituents destroyed the p-interactions with the silole core and resulted in the non-fluorescence. Additionally, 1-chloro-1-H-2,3,4,5-tetraphenylsilole featuring strong fluorescences in both solid and solution states with high fluorescence quantum yields represents a new potential photoelectric material. This work not only reports the silole with strong fluorescences in both solid and solution states for the first time but also contributs to enrich the AIE research of siloles. Graphical Abstract","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"125 - 131"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41725690","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}
引用次数: 3
Eccentric topological properties of a graph associated to a finite dimensional vector space 与有限维向量空间相关的图的偏心拓扑性质
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0020
Jia-bao Liu, Imran Khalid, M. T. Rahim, M. U. Rehman, Faisal Ali, M. Salman
{"title":"Eccentric topological properties of a graph associated to a finite dimensional vector space","authors":"Jia-bao Liu, Imran Khalid, M. T. Rahim, M. U. Rehman, Faisal Ali, M. Salman","doi":"10.1515/mgmc-2020-0020","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0020","url":null,"abstract":"Abstract A topological index is actually designed by transforming a chemical structure into a number. Topological index is a graph invariant which characterizes the topology of the graph and remains invariant under graph automorphism. Eccentricity based topological indices are of great importance and play a vital role in chemical graph theory. In this article, we consider a graph (non-zero component graph) associated to a finite dimensional vector space over a finite filed in the context of the following eleven eccentricity based topological indices: total eccentricity index; average eccentricity index; eccentric connectivity index; eccentric distance sum index; adjacent distance sum index; connective eccentricity index; geometric arithmetic index; atom bond connectivity index; and three versions of Zagreb indices. Relationship of the investigated indices and their dependency with respect to the involved parameters are also visualized by evaluating them numerically and by plotting their results.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"164 - 176"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42867493","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}
引用次数: 4
On multiplicative degree based topological indices for planar octahedron networks 平面八面体网络的基于乘法度的拓扑指数
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0026
Ghulam Dustigeer, Haidar Ali, Muhammad Imran Khan, Yu‐ming Chu
{"title":"On multiplicative degree based topological indices for planar octahedron networks","authors":"Ghulam Dustigeer, Haidar Ali, Muhammad Imran Khan, Yu‐ming Chu","doi":"10.1515/mgmc-2020-0026","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0026","url":null,"abstract":"Abstract Chemical graph theory is a branch of graph theory in which a chemical compound is presented with a simple graph called a molecular graph. There are atomic bonds in the chemistry of the chemical atomic graph and edges. The graph is connected when there is at least one connection between its vertices. The number that describes the topology of the graph is called the topological index. Cheminformatics is a new subject which is a combination of chemistry, mathematics and information science. It studies quantitative structure-activity (QSAR) and structure-property (QSPR) relationships that are used to predict the biological activities and properties of chemical compounds. We evaluated the second multiplicative Zagreb index, first and second universal Zagreb indices, first and second hyper Zagreb indices, sum and product connectivity indices for the planar octahedron network, triangular prism network, hex planar octahedron network, and give these indices closed analytical formulas.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"219 - 228"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44191060","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}
引用次数: 10
s-Block metal scorpionates – A new sodium hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate salt showing an unusual core stabilized by bridging and terminal O-bonded DMSO ligands s-嵌段金属蝎子——一种新的三（3,5-二甲基-1-吡唑基）硼酸氢钠盐，显示出通过桥接和末端O-键合二甲基亚砜配体稳定的不同寻常的核心
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0012
L. Plasseraud, H. Cattey
{"title":"s-Block metal scorpionates – A new sodium hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate salt showing an unusual core stabilized by bridging and terminal O-bonded DMSO ligands","authors":"L. Plasseraud, H. Cattey","doi":"10.1515/mgmc-2020-0012","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0012","url":null,"abstract":"Abstract Dissolution of [(μ-Me2CO)3(NaTp*)2] (1) (Tp* = hydrido-tris(3,5-dimethyl-1-pyrazolyl)borate) in DMSO at room temperature leads to the growth of colourless crystals characterized as the new salt [Na2Tp*(μ-Me2SO)3(Me2SO)3] [NaTp*2] (2). 2 crystallized in the trigonal space group R3 with Z = 3, a = 14.1227(2) Å, b = 14.1227(10) Å, c = 33.9685(2) Å, and V = 5867.35(17) Å3. Interestingly, anion and cation of 2 both contain the Tp* ligand. Moreover, the cationic moiety highlights an unusual sodium atom hexacoordinated by six DMSO molecules acting as O-bonded ligands. Three of which exhibit a bridging coordination mode and three are in terminal position. To the best of our knowledge, the framework of [Na2Tp*(μ-Me2SO)3(Me2SO)3] is unprecedented.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"102 - 110"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48373002","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}
引用次数: 0
Organodiphosphines in PtP2X2 (X = As, Ge or Te) derivatives – Structural aspects PtP2X2（X=As、Ge或Te）衍生物中的有机二膦-结构方面
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0016
M. Melnik, P. Mikuš
{"title":"Organodiphosphines in PtP2X2 (X = As, Ge or Te) derivatives – Structural aspects","authors":"M. Melnik, P. Mikuš","doi":"10.1515/mgmc-2020-0016","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0016","url":null,"abstract":"Abstract Structural data of cis-Pt(η2-P2L)(XL)2 (X = Ge or Te), cis-Pt(η2-P2L)(η2-X2L) (X = As, Ge or Te) and trans-Pt(η2-P,TeL)2 were classified and analyzed. The chelating ligands create varieties of metallocyclic rings, which open in the sequence: 83.1° (GeGeGe) < 83.8° (AsC2As) < 86.2° (PC2P) < 88.5° (PC2Te) < 89.7° (PC3P) ~ 89.7° (GeGe2Ge). The structural data are compared and discussed with the complexes of an inner coordination spheres Pt(η2-P2L)(XL)2 (X = O, N, CN, B, Cl, S, Se, Si, Br or I), Pt(η2-P2L)(η2- X2L) (X = O, N, S, Se or Si), and Pt(η2-P,SiL)2.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"132 - 137"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49197954","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}
引用次数: 4
Structures of Pt(0)P3, Pt(0)P4 and Pt(II)P4 – Distortion isomers Pt(0)P3, Pt(0)P4和Pt(II)P4 -畸变异构体的结构
IF 1.8 3区 化学
Main Group Metal Chemistry Pub Date : 2020-01-01 DOI: 10.1515/mgmc-2020-0013
M. Melnik, P. Mikuš
{"title":"Structures of Pt(0)P3, Pt(0)P4 and Pt(II)P4 – Distortion isomers","authors":"M. Melnik, P. Mikuš","doi":"10.1515/mgmc-2020-0013","DOIUrl":"https://doi.org/10.1515/mgmc-2020-0013","url":null,"abstract":"Abstract In this review are analyzed and classified crystallographic and structural parameters of P(0)P3, Pt(0) P4 and Pt(II)P4 derivatives – distortion isomers. Some of the isomers are differing not only by degree of distortion but also by crystal class. There are three types of organo-phosphines which build up the respective geometry about the platinum atoms. In Pt(0)P3 a distorted trigonal planar geometry is build up by three monodentate PPh3 ligands. In Pt(0)P4 a tetrahedral geometry with various degree of distortion is build up by a pair of homo-bidentate ligands. In Pt(II)P4 isomers a square-planar geometries with various degree of distortion are build up by bidentate-P,P’donor ligands, (except one example of isomers, where a tetradentate is involved). The bidentate-P,P’-donor ligands form: four-(PNP,PCP), five-(PC2P) and six-(PC3P) metallocyclic rings. The tetradentate forms five-(PC2P). There are some cooperative effects between Pt–P bond distances and the metallocyclic rings, and at the same time a distortion of the respective geometry increases.","PeriodicalId":48891,"journal":{"name":"Main Group Metal Chemistry","volume":"43 1","pages":"111 - 116"},"PeriodicalIF":1.8,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/mgmc-2020-0013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67036053","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}
引用次数: 0
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