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Heydari N, Bikas R, Siczek M, Lis T. Green carbon-carbon homocoupling of terminal alkynes by a silica supported Cu(II)-hydrazone coordination compound. Dalton Trans 2023; 52:421-433. [PMID: 36520159 DOI: 10.1039/d2dt03054c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Cu(II) complex, [Cu(HL)(NO3)(CH3OH)]·CH3OH (1), was obtained by the reaction of Cu(NO3)2·3H2O and H2L in methanol solvent (H2L is (E)-4-amino-N'-(2-hydroxy-3-methoxybenzylidene)benzohydrazide). H2L and compound 1 were characterized by various spectroscopic analyses and the molecular structure of [Cu(HL)(NO3)(CH3OH)]·CH3OH was determined by single-crystal X-ray analysis. The results indicated the product is a mononuclear Cu(II) complex and contains a free NH2 functional group on the structure of the ligand. [Cu(HL)(NO3)(CH3OH)]·CH3OH was used for the preparation of a heterogeneous catalyst by supporting it on functionalized silica gel. The heterogeneous catalyst (Si-Cu) was prepared by an amidification reaction of [Cu(HL)(NO3)(CH3OH)]·CH3OH with functionalized silica gel. The resulting silica-supported catalyst (Si-Cu) was characterized by TGA, FT-IR, EPR, DRS, EDS, XRD, SEM and XPS analyses. Si-Cu was employed in a carbon-carbon coupling reaction and the effects of the amount of Si-Cu and temperature were investigated in the catalytic coupling. The structure of one of the products of the catalytic reactions (C16H22O2, CP1) was determined by single-crystal X-ray analysis, which proved the formation of a C-C bond and the production of di-acetylene by homocoupling of terminal alkyne. This catalytic system is stable and it can be reused for a coupling reaction without a significant change in its catalytic activity.
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Affiliation(s)
- Neda Heydari
- Department of Chemistry, Faculty of Science, University of Zanjan, 45371-38791, Zanjan, Iran
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, 34148-96818, Qazvin, Iran.
| | - Milosz Siczek
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, Wroclaw 50-383, Poland
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2
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Solvent-induced Dy2 and Dy6 clusters with disparate slow magnetic relaxation behaviors. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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3
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Wang WM, Xin XY, Qiao N, Wu ZL, Li L, Zou JY. Self-assembly of octanuclear Ln(III)-based clusters: their large magnetocaloric effects and highly efficient conversion of CO 2. Dalton Trans 2022; 51:13957-13969. [PMID: 36040689 DOI: 10.1039/d2dt01892f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The design and construction of high-nuclear lanthanide clusters with fascinating topology and functional properties have been an active area of research, however, the development of an effective approach for obtaining high-nuclear lanthanide clusters with multifunctional properties is still extremely difficult. Up to now, a systematic approach for guiding the further expansion of Ln(III)-based clusters showing good functional properties is lacking. Herein, we design and synthesize a polydentate Schiff base ligand (HL), which reacts with β-diketonate salts Ln(acac)3·2H2O, and a series of Ln8 clusters [Ln8(acac)6(L)2(μ3-O)6(μ2-C2H5O)4(μ2-Hacac)2]·2CH3CN (Ln(III) = Gd (1), Dy (2), and Ho (3); HL = pyridine-2-carboxylic acid (5-hydroxymethyl-furan-2-ylmethylene)-hydrazide, Hacac = acetylacetone) have been successfully synthesized. Single-crystal X-ray diffraction studies reveal that clusters 1-3 are isostructural and can be viewed as a Ln8 core bridged by eighteen μ2-O atoms, six μ3-O atoms and two μ4-O atoms. Magnetic studies show that cluster 1-Gd8 displays a large magnetocaloric effect with -ΔSm = 46.14 J kg-1 K-1 (T = 2.0 K and ΔH = 7.0 T); cluster 2-Dy8 exhibits single-molecule magnet behavior under zero-field conditions. It is worth mentioning that the -ΔSm of cluster 1-Gd8 is larger than that of most reported polynuclear Gd(III)-based clusters; the 2-Dy8 cluster is one of the rare polynuclear Lnn SMMs (n ≥ 8) under zero dc field. Importantly, these Ln(III)-based clusters (1-3) can catalyze the cycloaddition of CO2 with epoxides with high efficiency under mild conditions; and cluster 1-Gd8 as a catalyst could be reused at least three times without obvious loss of catalytic performance.
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Affiliation(s)
- Wen-Min Wang
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, 030619, China.,Department of Chemistry, Tianjin University, Tianjin, 300072, China.
| | - Xiao-Yan Xin
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, 030619, China
| | - Na Qiao
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, 030619, China
| | - Zhi-Lei Wu
- Department of Chemistry, Tianjin University, Tianjin, 300072, China. .,College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Ling Li
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, 330096, China.
| | - Ji-Yong Zou
- Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, 330096, China. .,Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin, 300071, PR China
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Chen X, Hu H, Wang S, Li B, Wang H. Diversity of Coordination Architecture of Zinc Complexes with Diphenylarsinate. ChemistrySelect 2021. [DOI: 10.1002/slct.202103625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiao Chen
- State Key Laboratory of NBC Protection for Civilian Changping Beijing 102205 China
| | - Huijuan Hu
- State Key Laboratory of NBC Protection for Civilian Changping Beijing 102205 China
| | - Shan Wang
- State Key Laboratory of NBC Protection for Civilian Changping Beijing 102205 China
| | - Biao Li
- State Key Laboratory of NBC Protection for Civilian Changping Beijing 102205 China
| | - Hongmei Wang
- State Key Laboratory of NBC Protection for Civilian Changping Beijing 102205 China
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5
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Sun G, Huang X, Shang T, Yan S, Bao S, Lu X, Zhang Y, Zheng L. Polar Lanthanide Anthracene Complexes Exhibiting Magnetic, Luminescent and Dielectric Properties. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Guo‐Bin Sun
- State Key Laboratory of Coordination Chemistry Coordination Chemistry Institute School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
- Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
| | - Xin‐Da Huang
- State Key Laboratory of Coordination Chemistry Coordination Chemistry Institute School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
- Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
| | - Tao Shang
- Jiangsu Key Laboratory for NSLSCS School of Physical Science and Technology Nanjing Normal University Nanjing 210023 China
| | - Shuo Yan
- National Laboratory of Solid State Microstructures and Physics School Nanjing University Nanjing 210093 China
- Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
| | - Song‐Song Bao
- State Key Laboratory of Coordination Chemistry Coordination Chemistry Institute School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
- Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
| | - Xiao‐Mei Lu
- National Laboratory of Solid State Microstructures and Physics School Nanjing University Nanjing 210093 China
- Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
| | - Yi‐Quan Zhang
- Jiangsu Key Laboratory for NSLSCS School of Physical Science and Technology Nanjing Normal University Nanjing 210023 China
| | - Li‐Min Zheng
- State Key Laboratory of Coordination Chemistry Coordination Chemistry Institute School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China
- Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
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6
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Li Y, Sun X, Chen P, Liu HT, Li J, Liu D, Li D, Dou J, Tian H. Modulating the relaxation dynamics of the Na 2Mn 3 system via an auxiliary anion change. Dalton Trans 2021; 50:14774-14781. [PMID: 34591053 DOI: 10.1039/d1dt01237a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports two closely related heteropentanuclear manganese complexes, namely, {Na2Mn3(opch)3(μ4-O)(μ2-N3) (μ2-AcO)(μ2-MeO)}·6CH3OH·0.5H2O (1) and {Na2Mn3(opch)3(μ4-O)(μ2-N3)2(μ2-AcO)}·2.5CH3OH·2H2O (2), where H2opch is (E)-N'-(2-hydroxy-3-methoxybenzylidene)pyrazine-2-carbohydrazide. Single-crystal X-ray diffraction analysis reveals that the trigonal bipyramidal skeletons in both complexes are comparable, where a perfect triangular Mn3 motif occupies the equatorial plane. Magnetic investigations suggest that overall antiferromagnetic coupling is present within the triangles of 1 and 2. However, their dynamic magnetic properties are drastically distinct. Indeed, complexes 1 and 2 show two kinds of dual slow magnetic relaxation processes that correspond to anisotropy barriers (Δ) of 9.2 cm-1 (11.4 cm-1 for 2) and 12.8 cm-1 (30.0 cm-1 for 2) for the low- and high-frequency domains, respectively. More importantly, a further comparative study of the structure and magnetism indicates that the coordination sphere of these two model complexes with the homologous hydrazone-based coordination sites undergoes an alteration from methoxide-O to azide-N upon a subtle change of the auxiliary anion accompanied by modulating octahedron geometries, leading to a further influence on different relaxation dynamics.
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Affiliation(s)
- Yongfei Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
| | - Xiao Sun
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
| | - Peiqiong Chen
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
| | - Hou-Ting Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
| | - Jing Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
| | - Dan Liu
- Institute of Flexible Electronics, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072, Shaanxi, China.
| | - Dacheng Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
| | - Jianmin Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
| | - Haiquan Tian
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
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Wang WM, Wu ZL, Cui JZ. Molecular assemblies from linear-shaped Ln 4 clusters to Ln 8 clusters using different β-diketonates: disparate magnetocaloric effects and single-molecule magnet behaviours. Dalton Trans 2021; 50:12931-12943. [PMID: 34581356 DOI: 10.1039/d1dt01344k] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of tetranuclear lanthanide-based clusters [Ln4(dbm)6(L)2(CH3OH)4]·2CH3OH (Ln(III) = Gd (1), Dy (2), and Ho (3); H3L = 2-[(2-(hydroxyimino)propanehydrazide)methyl]-2,3-dihydroxybenzaldehyde, Hdbm = dibenzoylmethane) and octanuclear lanthanide-based clusters [Ln8(HL)10(CH3O)4(CH3OH)2]·6CH3OH (Ln(III) = Gd (4), Dy (5)) were assembled using a polydentate Schiff-base ligand H3L and two different β-diketone salts via a solvothermal method, and their structures and magnetic properties have been characterized. Interestingly, β-diketones play an important role in assembling and affecting the structures of Ln4 to Ln8 clusters. This is the first use of β-diketone to affect the structures of polynuclear Ln(III)-based clusters from linear-shaped Ln4 clusters to Ln8 clusters. Magnetic studies revealed that antiferromagnetic interactions exist in clusters 1-Gd4 and 4-Gd8. More importantly, clusters 1-Gd4 and 4-Gd8 display significant cryogenic magnetic refrigeration properties (-ΔSm = 24.88 J kg-1 K-1 for 1-Gd4 and -ΔSm = 32.52 J kg-1 K-1 for 4-Gd8); the results show that cluster 4-Gd8 exhibits a larger magnetocaloric effect than 1-Gd4. Cluster 2-Dy4 shows remarkable single-molecule magnet (SMM) behavior (ΔE/kB = 67.5 K and τ0 = 3.06 × 10-7 s) under a zero dc field, and 5-Dy8 exhibits a field-induced SMM-like behavior (ΔE/kB = 39.83 K and τ0 = 2.12 × 10-7 s) under a 5000 Oe dc field.
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Affiliation(s)
- Wen-Min Wang
- Department of Chemistry, Taiyuan Normal University, Jinzhong, 030619, China.,Department of Chemistry, Tianjin University, Tianjin, 300072, China.
| | - Zhi-Lei Wu
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China.,Department of Chemistry, Tianjin University, Tianjin, 300072, China.
| | - Jian-Zhong Cui
- Department of Chemistry, Tianjin University, Tianjin, 300072, China.
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Chen C, Zhang A. Radii-dependent self-assembly polynuclear lanthanide complexes as catalysts for CO 2 transformation into cyclic carbonates. NEW J CHEM 2021. [DOI: 10.1039/d1nj03652a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A series of lanthanide complexes with structural variation from a dinuclear to pentanuclear structure are found to be dependent on the radii of Ln3+ ions, and show high catalytic performance to obtain cyclic carbonates under solvent-free conditions.
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Affiliation(s)
- Changjuan Chen
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, People's Republic of China
| | - Aijiang Zhang
- College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, People's Republic of China
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