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Cementite-type Y3Ru 英泥石型 Y3Ru
Zeitschrift für Naturforschung B Pub Date : 2023-09-01 DOI: 10.1515/znb-2023-0058
Valentin Antoine Chamard, Samir F. Matar, Lars Schumacher, Christian Paulsen, Jutta Kösters, Theresa Block, Rainer Pöttgen
{"title":"Cementite-type Y<sub>3</sub>Ru","authors":"Valentin Antoine Chamard, Samir F. Matar, Lars Schumacher, Christian Paulsen, Jutta Kösters, Theresa Block, Rainer Pöttgen","doi":"10.1515/znb-2023-0058","DOIUrl":"https://doi.org/10.1515/znb-2023-0058","url":null,"abstract":"Abstract Single crystals of Y 3 Ru were obtained as a side product during phase analytical studies of yttrium-rich compounds in the system Y–Ru–Zn. The structure of Y 3 Ru was refined from single-crystal X-ray diffractometer data: Fe 3 C type, Pnma , a = 732.51(7), b = 925.61(8), c = 633.66(10) pm, w R = 0.0639, 811 F 2 values, 23 variables. The ruthenium atoms have coordination number 9 in form of a strongly distorted tricapped trigonal yttrium prism with Ru–Y distances ranging from 275–391 pm. The second substructure concerns empty Y 6 octahedra ( d (Y–Y) = 344–396 pm). Electronic structure calculations show a net charge transfer from yttrium to ruthenium and underpin the essentially covalent Y–Ru bonding. A phase-pure sample of Y 3 Ru was synthesized from the elements by arc-melting. Temperature-dependent magnetic susceptibility studies of this sample reveal Pauli paramagnetism (3.6(1) × 10 −5 emu mol −1 at T = 300 K).","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135297908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrocatalytic hydrogen evolution at carbon paste electrodes doped with a manganese(II) imidazoledicarboxylate complex 掺杂锰(II)咪唑二羧酸盐配合物的碳糊电极电催化析氢
Zeitschrift für Naturforschung B Pub Date : 2023-09-01 DOI: 10.1515/znb-2023-0027
Zhengwei Wu, Tiantian Wan, Xiaoxia Kong, Qinqin Shen, Kaiyi Li, Huilu Wu
{"title":"Electrocatalytic hydrogen evolution at carbon paste electrodes doped with a manganese(II) imidazoledicarboxylate complex","authors":"Zhengwei Wu, Tiantian Wan, Xiaoxia Kong, Qinqin Shen, Kaiyi Li, Huilu Wu","doi":"10.1515/znb-2023-0027","DOIUrl":"https://doi.org/10.1515/znb-2023-0027","url":null,"abstract":"Abstract A mononuclear Mn(II) complex [Mn( p -MOPhH 2 IDC) 2 (H 2 O) 2 ]·2(DMF), was synthesized by the reaction of p -MOPhH 3 IDC (2-(4-methoxyphenyl)-1 H -imidazole-4,5-dicarboxylic acid) and Mn(CH 3 COO) 2 ·4H 2 O under solvothermal conditions and characterized by single-crystal X-ray diffraction, elemental analysis, IR and UV–vis spectroscopy. The structure analysis revealed that the manganese(II) center has a six-coordinated octahedral coordination geometry. The performance of a Mn(II) complex-doped carbon paste electrode (Mn-CPE) in the electrocatalytic hydrogen evolution reaction (HER) was evaluated by linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) methods. The polarization curve shows that the η 10 298K (overpotential, 10 mA cm −2 ) of the Mn-CPE was positively shifted by 341 mV compared with the bare CPE (without complex). The Tafel slope of the Mn-CPE was 161 mV dec −1 . These data indicate that the Mn-CPE was effective in the HER electrocatalytic reaction. For EIS experiments, the arc diameter of the high-frequency region of the Mn-CPE was much smaller than that of the bare CPE, which further indicates the effective catalytic capacity of the Mn(II) complex for hydrogen evolution. The information obtained from this study will help to expand the application of Mn(II) complexes in the field of electrochemistry.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135298776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crystal structure of the quaternary lithogallate Sr2LiGaO4 第四纪没食子酸盐Sr2LiGaO4的晶体结构
Zeitschrift für Naturforschung B Pub Date : 2023-09-01 DOI: 10.1515/znb-2023-0043
Johannes G. Volpini, Gregor Hoerder, Markus Seibald, Dominik Baumann, H. Huppertz
{"title":"Crystal structure of the quaternary lithogallate Sr2LiGaO4","authors":"Johannes G. Volpini, Gregor Hoerder, Markus Seibald, Dominik Baumann, H. Huppertz","doi":"10.1515/znb-2023-0043","DOIUrl":"https://doi.org/10.1515/znb-2023-0043","url":null,"abstract":"Abstract The new quaternary lithogallate Sr2LiGaO4 was prepared by conventional solid-state synthesis in a welded tantalum ampoule at T = 850 °C. Single-crystal X-ray diffraction was used to elucidate the crystal structure of the compound, which crystallizes in the orthorhombic space group Pnma (no. 62) with the lattice parameters a = 11.2434(4), b = 5.6879(2), and c = 6.6983(2) Å. The phase composition of the powder sample was determined by Rietveld refinement based on X-ray diffraction data. The crystal structure is composed of layers of corner-sharing LiO4 and GaO4 tetrahedra with alternating orientation parallel to the crystallographic bc plane. The eightfold coordinated strontium atoms are arranged in a zigzag manner between the layers forming two types of double-capped trigonal prismatic SrO8 units with common faces. The crystal structure of Sr2LiGaO4 is isotypic to that of the lithoaluminate derivate Sr1.85Ba0.15LiAlO4.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"1 1","pages":"477 - 483"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89973438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frontmatter 头版头条
Zeitschrift für Naturforschung B Pub Date : 2023-09-01 DOI: 10.1515/znb-2023-frontmatter9-10
{"title":"Frontmatter","authors":"","doi":"10.1515/znb-2023-frontmatter9-10","DOIUrl":"https://doi.org/10.1515/znb-2023-frontmatter9-10","url":null,"abstract":"","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135639672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Syntheses, characterization and properties of copper, silver and palladium complexes with oxazoline-containing ligands 含恶唑啉配体铜、银、钯配合物的合成、表征及性能
Zeitschrift für Naturforschung B Pub Date : 2023-09-01 DOI: 10.1515/znb-2023-0056
Tao Hu, Wei Zhou, Hai-Wei Kuai, Hai-Ming Zhang
{"title":"Syntheses, characterization and properties of copper, silver and palladium complexes with oxazoline-containing ligands","authors":"Tao Hu, Wei Zhou, Hai-Wei Kuai, Hai-Ming Zhang","doi":"10.1515/znb-2023-0056","DOIUrl":"https://doi.org/10.1515/znb-2023-0056","url":null,"abstract":"Abstract The reactions of copper, silver and palladium salts with the homochiral ligands 3,3′-bis[( S , S )-4-isopropyl-2-oxazolyl]-4-chloro-2,2′-bipyridine (L 1 ), 3,3′-bis[( S , S )-4-benzyl-2-oxazolyl]-4-chloro-2,2′-bipyridine (L 2 ) and 2-[( S )-4-isopropyl-2-oxazolyl]quinoline (L 3 ) yield three new chiral complexes: [Cu(L 1 )Br 2 ] ( 1 ), [Ag(L 2 )(CH 3 CN)]·(BF 4 )·(CH 3 OH) 0.17 ·(H 2 O) 0.08 ( 2 ) and [Pd(L 3 )Cl 2 ]·(CH 3 COCH 3 ) 0.5 ( 3 ), which have been characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental and thermogravimetric analyses. The complexes 1 – 3 display discrete mononuclear structures. Non-linear optical properties of complexes 1 – 3 were investigated.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135389106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[RuCl2(dppf)(PN)]/Pd-cocatalyzed three-component synthesis of 2-pyridinyl-6-arylquinolines [RuCl2(dppf)(PN)]/ pd共催化三组分合成2-吡啶基-6-芳基喹啉
Zeitschrift für Naturforschung B Pub Date : 2023-08-31 DOI: 10.1515/znb-2023-0018
Hao Wang, Pengtao Bai, Shuo Wen, Jingjing Wei, Heng Song, Chen Xu
{"title":"[RuCl2(dppf)(PN)]/Pd-cocatalyzed three-component synthesis of 2-pyridinyl-6-arylquinolines","authors":"Hao Wang, Pengtao Bai, Shuo Wen, Jingjing Wei, Heng Song, Chen Xu","doi":"10.1515/znb-2023-0018","DOIUrl":"https://doi.org/10.1515/znb-2023-0018","url":null,"abstract":"Abstract A new complex [RuCl2(dppf)(PN)] 1 (dppf = 1,1′-bis(diphenylphosphino) ferrocene; PN = (2-diphenylphosphino)benzenamine) has been synthesized and characterized. Its structure was determined by single-crystal X-ray diffraction. An efficient 1/Pd salt-cocatalyzed three-component oxidation/cyclization/Suzuki reaction for the synthesis of 2-pyridinyl-6-arylquinolines from 2-acetylpyridine, (2-amino-5-bromophenyl)methanol, and arylboronic acids has been developed.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78256701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative study of Fe2B3O7 and Mn4(B6O13(OH)): a new structure linking melilite and johachidolite Fe2B3O7和Mn4(B6O13(OH))的比较研究:一种连接千英石和约绢石的新结构
Zeitschrift für Naturforschung B Pub Date : 2023-08-21 DOI: 10.1515/znb-2023-0047
Leonard C. Pasqualini, H. Huppertz
{"title":"Comparative study of Fe2B3O7 and Mn4(B6O13(OH)): a new structure linking melilite and johachidolite","authors":"Leonard C. Pasqualini, H. Huppertz","doi":"10.1515/znb-2023-0047","DOIUrl":"https://doi.org/10.1515/znb-2023-0047","url":null,"abstract":"Abstract The two compounds Fe2B3O7 (a = 663.61(4), c = 438.39(3) pm, space group: P 4 ‾ $overline{4}$ 21 m) and Mn4(B6O13(OH)) (a = 445.14(1), b = 683.56(2), c = 1330.34(3) pm, β = 90.42(1)°, space group: P21/c) were synthesized under high-pressure/high-temperature conditions of 9 GPa and 800 °C. Their crystal structures have been determined via single-crystal X-ray diffraction and the occurring side-phases have been identified. Fe2B3O7 crystallizes in the melilite structure type, whereas the novel structure of Mn4(B6O13(OH)) can be derived from the structures of the minerals melilite or johachidolite.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"30 6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87663890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ternary Laves phases with the MgCu4Sn-type structure: RECo4Mg (RE = Gd, Dy–Tm, Lu), EuNi4Mg and RET4Cd (RE = Y, La–Nd, Sm, Gd–Dy; T = Cu, Pt) 具有mgcu4sn型结构的三元laaves相:RECo4Mg (RE = Gd, Dy-Tm, Lu)， EuNi4Mg和RET4Cd (RE = Y, La-Nd, Sm, Gd - dy;T = Cu, Pt)
Zeitschrift für Naturforschung B Pub Date : 2023-08-14 DOI: 10.1515/znb-2023-0055
M. Reimann, Michael Johnscher, T. Block, Judith Bönnighausen, Rainer Pöttgen
{"title":"Ternary Laves phases with the MgCu4Sn-type structure: RECo4Mg (RE = Gd, Dy–Tm, Lu), EuNi4Mg and RET4Cd (RE = Y, La–Nd, Sm, Gd–Dy; T = Cu, Pt)","authors":"M. Reimann, Michael Johnscher, T. Block, Judith Bönnighausen, Rainer Pöttgen","doi":"10.1515/znb-2023-0055","DOIUrl":"https://doi.org/10.1515/znb-2023-0055","url":null,"abstract":"Abstract Twenty five new ternary Laves phases RET4Mg and RET4Cd (RE = rare earth element; T = Co, Ni, Cu, Pt) have been synthesized from the elements using niobium or tantalum tubes as inert crucible materials. The lattice parameters have been derived from powder X-ray diffraction data. The structures of Ce1.41(1)Co4Mg0.59(1), Dy1.10(1)Co4Mg0.90(1), LaPt4Cd, Y1.10(1)Cu4Cd0.90(1), Ca0.93(1)Cd0.07(1)Pd2 and Eu0.87(2)Cd0.13(2)Pd2 were refined from single-crystal X-ray diffractometer data. Most phases show certain degrees of RE/Mg or RE/Cd disorder. The quenched phases are assigned to the MgCu2 structure, while the annealed ones adopt the MgCu4Sn type, a translationengleiche superstructure variant of the aristotype. The annealing time has a substantial influence on the degree of ordering and is expressed in the lattice parameters, i.e. larger ones for the disordered samples. The REPt4Cd (RE = La–Nd) samples have been characterized with respect to their magnetic properties. LaPt4Cd is a diamagnet, while CePt4Cd (2.23(1) µB), PrPt4Cd (3.40(1) µB) and NdPt4Cd (3.43(1) µB) are Curie–Weiss paramagnets. The cerium compound shows a slight moment reduction. NdPt4Cd is ordered ferromagnetically at TC = 4.4(1) K.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77870082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of nickel borides in molten salts at elevated temperatures and thermodynamic characterization of the system Ni–B 高温熔盐中硼化镍的合成及Ni-B体系的热力学表征
Zeitschrift für Naturforschung B Pub Date : 2023-07-17 DOI: 10.1515/znb-2023-0002
K. Burkmann, Bianca Störr, J. Seidel, K. Bohmhammel, F. Mertens
{"title":"Synthesis of nickel borides in molten salts at elevated temperatures and thermodynamic characterization of the system Ni–B","authors":"K. Burkmann, Bianca Störr, J. Seidel, K. Bohmhammel, F. Mertens","doi":"10.1515/znb-2023-0002","DOIUrl":"https://doi.org/10.1515/znb-2023-0002","url":null,"abstract":"Abstract This article focuses on the synthesis of nickel borides in different molten-salt systems (eutectic NaCl/KCl and borax) at elevated temperatures. The differences in the thermodynamic stability of different nickel borides and the formation of NiB in an eutectic halite-sylvine mixture at T = 950 °C with different nickel-containing starting materials (NiO, Ni) has been elucidated. The results are compared to theoretical data calculated by the Calphad method. The results of the analysis shows that NiB2, if it exists, may only form a metastable phase.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80727396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A copper(I) coordination polymer with 3-cyanopyridine ligands 具有3-氰吡啶配体的铜(I)配位聚合物
Zeitschrift für Naturforschung B Pub Date : 2023-07-11 DOI: 10.1515/znb-2023-0004
Cuiling Deng, Yujia Zhu, Xuechun Zhang, Yani Tao, Xi Liu
{"title":"A copper(I) coordination polymer with 3-cyanopyridine ligands","authors":"Cuiling Deng, Yujia Zhu, Xuechun Zhang, Yani Tao, Xi Liu","doi":"10.1515/znb-2023-0004","DOIUrl":"https://doi.org/10.1515/znb-2023-0004","url":null,"abstract":"Abstract A coordination polymer Cu(3-CP)3(NO3) (1) was synthesized from copper(II) sulfate and 3-cyanopyridine (3-CP) with in-situ reduction by hydroxylamine sulfate via the solvent evaporation method at room temperature, and structurally characterized by single-crystal X-ray diffraction and elemental analysis. Complex 1 exhibits a structure formed by cationic [Cu(3-CP)3] n n+ chains and NO3− anions with abundant supramolecular interactions. Solid-state photoluminescence experiments show that complex 1 exhibits a relatively strong blue-green emission, and its possible emission mechanism was investigated in detail based on theoretical calculations.","PeriodicalId":23831,"journal":{"name":"Zeitschrift für Naturforschung B","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85623204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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