CrystEngComm最新文献_第5页

Synthesis, crystal structures and luminescence properties of Zn(ii) and Cd(ii) coordination compounds assembled from flexible bis(quinolyl) ligands with symmetrical spacers: the influence of coordinated anions† 由具有对称间隔的柔性双(喹啉)配体组装而成的锌(ii)和镉(ii)配位化合物的合成、晶体结构和发光特性：配位阴离子的影响†。

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-11-01 DOI: 10.1039/D4CE00768A

Guoqiang Zhang, Rongkai Pan, Shenggui Liu and Huihui Chen

{"title":"Synthesis, crystal structures and luminescence properties of Zn(ii) and Cd(ii) coordination compounds assembled from flexible bis(quinolyl) ligands with symmetrical spacers: the influence of coordinated anions†","authors":"Guoqiang Zhang, Rongkai Pan, Shenggui Liu and Huihui Chen","doi":"10.1039/D4CE00768A","DOIUrl":"https://doi.org/10.1039/D4CE00768A","url":null,"abstract":"This study is committed to the synthesis and characterization of a series of bi-, tri- and tetranuclear coordination compounds. These compounds are produced through the reactions of zinc(II) or cadmium(II) ions as coordination centers with flexible bis(quinolyl) ligands HL1 (N,N′-bis-quinolin-2-ylmethylene-carbohydrazide) or HL2 (N,N′-bis-quinolin-2-ylmethylene-carbonothioic dihydrazide), in conjunction with chloride, thiocyanate, iodide or hydroxyl anions serving as the coordinated counterions. These compounds are denoted as [Zn3(L1)2Cl(NCS)3]·2DMF·H2O (1), [Zn4(L1)2Cl3.8I0.2(OH)2]·8H2O (2), [Cd2(L1)I3(H2O)(DMF)]·DMF·0.25H2O (3), [Zn3(L2)2Cl4]·3DMF·2H2O (4), [Zn3(L2)2Cl(NCS)3]·3DMF (5), [Zn4(L2)2Cl4(OH)2]·3DMF·2H2O (6), and [Cd4(L2)2I6]·2DMF (7). An array of analytical techniques including elemental analyses, infrared (IR) spectroscopy, thermogravimetric (TG) analysis, powder X-ray diffraction (XRD) and comprehensive single crystal structure analyses have been utilized to elucidate the nature of these compounds. The crystal structures of compounds 1 to 7 exhibit complex supramolecular networks, arranged in zero, one, two, or three dimensions, primarily mediated by various interactions such as intermolecular π⋯π, C–H⋯π, C–H⋯Cl, and C–H⋯S weak interactions, in addition to hydrogen bonding. The structural diversity highlights the key roles of the variable coordinating counterions and the coordination modes of the iodide anions in shaping the architectures of the coordination compounds. Furthermore, the luminescence characteristics of compounds 1 to 7 have been assessed in the solid state.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 46","pages":" 6627-6639"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714069","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

Two chiral EuIII and SmIII enantiomeric pairs with enantiopure N-donor ligands: showing strong third-harmonic generation and photoluminescence properties†

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-11-01 DOI: 10.1039/D4CE01052C

Jinliang Zhang, Zhiqiang Zhang, Congli Gao and Xi-Li Li

{"title":"Two chiral EuIII and SmIII enantiomeric pairs with enantiopure N-donor ligands: showing strong third-harmonic generation and photoluminescence properties†","authors":"Jinliang Zhang, Zhiqiang Zhang, Congli Gao and Xi-Li Li","doi":"10.1039/D4CE01052C","DOIUrl":"https://doi.org/10.1039/D4CE01052C","url":null,"abstract":"The reaction of the precursors Eu(dbm)3(H2O) and Sm(dbm)3(H2O) with enantiopure monobidentate N-donor ligands (LR/LS), respectively, afforded two chiral EuIII and SmIII enantiomeric pairs, namely Ln(dbm)3(LR)/Ln(dbm)3(LS) (Ln = EuIII, D-1/L-1 and Ln = SmIII, D-2/L-2), where dbm− = dibenzoylmethanate and LR/LS = (−)/(+)-4,5-pinenepyridyl-2-pyrazine. Compared with their precursors, D-1 and D-2 display highly enhanced photophysical properties under excitation with visible light. A study of nonlinear optical (NLO) response reveals that Eu(dbm)3(H2O) and Sm(dbm)3(H2O) only show moderate second-harmonic generation (SHG) responses, while D-1/L-1 and D-2/L-2 only exhibit strong third-harmonic generation (THG) responses. The THG intensities of D-1/L-1 and D-2/L-2 are 62/59 and 56/58 × α-SiO2, respectively. These findings clearly indicate that introducing LR and LS into Eu(dbm)3(H2O) and Sm(dbm)3(H2O) can not only highly boost the photophysical performances but also lead to the switching of the NLO responses from SHG to THG.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 47","pages":" 6757-6764"},"PeriodicalIF":2.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757878","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

Solvation and oxidation effects on the crystal structure and morphology of tetraoxolene-based materials† 溶解和氧化对四氧化烯基材料晶体结构和形态的影响†。

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-31 DOI: 10.1039/D4CE00921E

Ashlyn A. Kamin, E. J. Brannan, Kathleen M. Snook, Sebastian Krajewski, Paige M. Gannon, Werner Kaminsky and Dianne J. Xiao

引用次数: 0

Ambient-stable and lead-free Cs3Bi2I9−xBrx (0 ≤ x ≤ 9) perovskite films for memristor devices 用于忆阻器设备的环境稳定无铅 Cs3Bi2I9-xBrx (0 ≤ x ≤ 9) 包晶薄膜

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-31 DOI: 10.1039/D4CE00933A

Siyuan Li, Jing Qian, Jiaxin Ma and Xianmin Zhang

{"title":"Ambient-stable and lead-free Cs3Bi2I9−xBrx (0 ≤ x ≤ 9) perovskite films for memristor devices","authors":"Siyuan Li, Jing Qian, Jiaxin Ma and Xianmin Zhang","doi":"10.1039/D4CE00933A","DOIUrl":"https://doi.org/10.1039/D4CE00933A","url":null,"abstract":"In this work, we prepared lead-free Cs3Bi2I9−xBrx (x = 0, 1, 2, 3, 6, and 9) thin films using a green anti-solvent method under air conditions and used them to fabricate memristors with an Al/Cs3Bi2I9−xBrx/ITO structure. These memristors exhibited non-volatile and bipolar resistance switching behavior without electroforming. Notably, the bandgap of the Cs3Bi2I9−xBrx (x = 0, 1, 2, 3, 6, 9) series films was regulated by bromine doping. The switching ratio of devices changed with the films' band gap and increased from 102 to 103. The resistance state of the Al/Cs3Bi2I9−xBrx/ITO devices was maintained even after 150 switching cycles and 104 seconds of reading. Moreover, the Al/Cs3Bi2Br9/ITO memristor showed excellent stability in the air after 100 days. This study offers beneficial insights into designing perovskite materials and regulating the performance of perovskite memristors.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 46","pages":" 6545-6552"},"PeriodicalIF":2.6,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714015","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

Amplified circularly polarized luminescence of chiral lanthanide-based chains through helical assembly†

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-29 DOI: 10.1039/D4CE00957F

Xue-Ting Wang, Fang-Wen Lv, Hang Qin, Xin-Tong Dai, Shan Jin and Xiu-Ying Zheng

引用次数: 0

A new salt-inclusion compound CsCl·(VOSe2O5)4 showing nearly isolated spin-1/2 chain structure with a typical square lattice† 一种新的含盐化合物 CsCl-(VOSe2O5)4 显示出近乎孤立的自旋-1/2 链结构和典型的方形晶格†。

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-29 DOI: 10.1039/D4CE00936C

Wenya Xiang, Guozhao Wang, Zhiying Zhao, Meiyan Cui and Zhangzhen He

引用次数: 0

I3− entrapped cationic Zn(ii) coordination polymer: selective detection and dose-dependent photocatalytic degradation of roxithromycin† 夹带 I3 的阳离子 Zn(ii) 配位聚合物：选择性检测和光催化降解罗红霉素的剂量依赖性

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-29 DOI: 10.1039/D4CE01006J

Preeti Sharma, Musheer Ahmad, Nazrul Haq and Kafeel Ahmad Siddiqui

{"title":"I3− entrapped cationic Zn(ii) coordination polymer: selective detection and dose-dependent photocatalytic degradation of roxithromycin†","authors":"Preeti Sharma, Musheer Ahmad, Nazrul Haq and Kafeel Ahmad Siddiqui","doi":"10.1039/D4CE01006J","DOIUrl":"https://doi.org/10.1039/D4CE01006J","url":null,"abstract":"This study presents the synthesis and characterization of a new zinc-based coordination polymer, {[Zn(BPMEDA)I]2+·2I3−}n (zinc-CP), utilizing Zn(II) ions and the N,N′-bis(2-pyridylmethyl)-1,2-ethylenediamine tetrahydrochloride dihydrate (BPMEDA) ligand. Powder X-ray diffraction (PXRD), Fourier-transform infrared spectroscopy (FTIR), single-crystal X-ray diffraction (SCXRD), energy-dispersive X-ray spectroscopy (EDAX), scanning electron microscopy (SEM), and elemental mapping confirmed zinc-CP's structural integrity and composition. Furthermore, we assessed the stability of our crystal at different pH levels and evaluated its water stability by immersing the crystal in water over several days. The photoluminescence detection capability of zinc-CP was investigated with nine different antibiotics, revealing that the macrolide antibiotics, roxithromycin (RXM) and azithromycin (AZM), exhibited the highest limits of detection (LOD). Additionally, the photocatalytic degradation phenomenon of zinc-CP was assessed for the same antibiotics, demonstrating remarkable degradation rates of 97.59% for sulfadiazine (SDZ) and 94.52% for RXM. These findings demonstrate zinc-CP's potential as a sensitive sensor and photocatalyst for environmental pharmaceutical contaminants. Zinc-CP can identify and degrade pharmaceutical pollutants like antibiotics, indicating its potential for environmental cleanup. Zinc-CP's sensitive detection and catalytic breakdown make it a promising material for controlling pharmaceutical waste in water and other ecosystems in an environmentally responsible manner.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 45","pages":" 6472-6485"},"PeriodicalIF":2.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664395","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

When topology meets geometry: topological motifs and uniformity of atomic sublattices in inorganic crystals† 当拓扑学遇到几何学：无机晶体中原子亚晶格的拓扑图案和均匀性†。

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-28 DOI: 10.1039/D4CE01009D

Inna V. Medrish and Vladislav A. Blatov

{"title":"When topology meets geometry: topological motifs and uniformity of atomic sublattices in inorganic crystals†","authors":"Inna V. Medrish and Vladislav A. Blatov","doi":"10.1039/D4CE01009D","DOIUrl":"https://doi.org/10.1039/D4CE01009D","url":null,"abstract":"We have analyzed topological motifs of whole crystal structures and unconnected non-metal sublattices in 967 borides, 721 carbides, 899 nitrides and 927 silicides of metals within the periodic net model. In addition, we have classified the topological types of connected non-metal motifs in 333 carbides and 86 nitrides containing N–N or C–C bonds. The topology of the whole structure was found to be essentially predetermined by the sublattice motif; however, there were exceptions, which were caused by geometrical distortions of the structure. In contrast, sublattices of the same type can exist in different structural and topological types. We have proposed an integral criterion 〈G3〉 of the sublattice distortion, which can also be considered as a measure of the sublattice uniformity. In most cases, the sublattices of non-metal atoms possess high uniformity, which reflects the tendency of the negatively charged atoms to be placed as distant as possible from each other. The sublattices, which have high symmetry, simple topology, and high uniformity in the most symmetrical embedding, were found to be the most suitable for the realization in different structures. The low uniformity of a sublattice indicates either strong interatomic interactions in the sublattice or its subordinate structural role.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 45","pages":" 6410-6419"},"PeriodicalIF":2.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664396","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

Flower-like MoS2 microspheres highly dispersed on CoFe2O4/MIL-101(Fe) metal organic framework: a recoverable magnetic catalyst for the reduction of toxic nitroaromatics in water 高度分散在 CoFe2O4/MIL-101(Fe)金属有机框架上的花状 MoS2 微球：用于还原水中有毒硝基芳烃的可回收磁性催化剂

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-28 DOI: 10.1039/D4CE00896K

Mehri Moradi-Beiranvand, Saeed Farhadi, Abedin Zabardasti and Farzaneh Mahmoudi

{"title":"Flower-like MoS2 microspheres highly dispersed on CoFe2O4/MIL-101(Fe) metal organic framework: a recoverable magnetic catalyst for the reduction of toxic nitroaromatics in water","authors":"Mehri Moradi-Beiranvand, Saeed Farhadi, Abedin Zabardasti and Farzaneh Mahmoudi","doi":"10.1039/D4CE00896K","DOIUrl":"https://doi.org/10.1039/D4CE00896K","url":null,"abstract":"In this study, we report on the synthesis and characterization of novel magnetic MoS2/CoFe2O4/MIL101-(Fe) nanocomposite catalysts designed for the efficient reduction of toxic nitroaromatic compounds, such as nitrophenols and nitroanilines, to their corresponding amines at ambient temperature. The nanocomposites were engineered by integrating metal–organic frameworks (MIL101-(Fe)), flower-like MoS2 microspheres, and CoFe2O4 nanocrystals using a hydrothermal method. The structural and physicochemical properties of the nanocomposites were thoroughly investigated using a suite of analytical techniques, including XRD, FT-IR, FE-SEM, EDX, VSM, BET surface area analysis, and zeta potential measurement. The results demonstrate that the MoS2/CoFe2O4/MIL-101(Fe) nanocomposite exhibits high catalytic activity in the reduction of 4-nitrophenol (4-NP), 2-nitrophenol (2-NP), 2-nitroaniline (2-NA), and 4-nitroaniline (4-NA) to their respective amine derivatives. The conversion rates are notably high, with pseudo-first-order rate constants of 0.386, 0.086, 0.064, and 0.117 min−1, respectively. Specifically, the complete conversion of these pollutants was achieved within 18–21 minutes, demonstrating the exceptional efficiency of the nanocomposite. Furthermore, the study explored the influence of catalyst dosage and reducing agent concentration on the reduction process's effectiveness. Notably, the magnetic nature of the nanocomposite facilitates its facile separation from the reaction mixture using an external magnet, significantly simplifying its recovery and reuse.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 46","pages":" 6591-6607"},"PeriodicalIF":2.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714066","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

Regulating electrical conductivity and Schottky nature of d10 metal ion-based nanoarchitectonics in coordination polymers† 调节配位聚合物中基于 d10 金属离子的纳米架构的导电性和肖特基性质†。

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-28 DOI: 10.1039/D4CE00901K

Manik Shit, Pubali Das, Arnab Samanta, Basudeb Dutta, Mainak Das, Sourav Roy, Chittaranjan Sinha, Partha Pratim Ray and Mohammad Hedayetullah Mir

{"title":"Regulating electrical conductivity and Schottky nature of d10 metal ion-based nanoarchitectonics in coordination polymers†","authors":"Manik Shit, Pubali Das, Arnab Samanta, Basudeb Dutta, Mainak Das, Sourav Roy, Chittaranjan Sinha, Partha Pratim Ray and Mohammad Hedayetullah Mir","doi":"10.1039/D4CE00901K","DOIUrl":"https://doi.org/10.1039/D4CE00901K","url":null,"abstract":"Coordination polymers (CPs) with high electrical conductivity have potential applications in electronic devices, sensors and energy storage systems. Herein, we present a Cd(II)-based two-dimensional (2D) CP [Cd2(adp)2(4-nvp)4(H2O)]·(H2O)7 [CP1; H2adp = adipic acid and 4-nvp = 4-(1-naphthylvinyl)pyridine] and a Zn(II) based one-dimensional (1D) CP [Zn2(adp)(4-nvp)2(H2O)(μ3-OH)]·(H2O)·(NO3) (CP2) that exhibit electrical conductivity in the semiconducting regime and create a Schottky barrier diode (SBD) at the metal–semiconductor (MS) junction. However, CP1 shows higher conductivity as compared to CP2, which relates to the better orbital overlap of larger Cd(II) ions in CP1, providing a conjugation pathway for potent charge transport. These results are well-validated by theoretical prediction via density functional theory (DFT) computation based on band gap calculation. Such materials with semiconducting properties may pave the way for the fabrication of electronic and optoelectronic devices.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 46","pages":" 6618-6626"},"PeriodicalIF":2.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714068","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