Journal of Structural Chemistry最新文献

SAXS and SEM Studies of Supramolecular Aggregation of Enzymes on Carbon Adsorbent Surfaces and the Effect of this Process on the Biocatalytic Properties of Immobilized Lipase 碳吸附剂表面酶的超分子聚集及其对固定化脂肪酶生物催化性能影响的SAXS和SEM研究

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090136

G. A. Kovalenko, L. V. Perminova, O. A. Borodina, Yu. V. Larichev, A. N. Salanov

{"title":"SAXS and SEM Studies of Supramolecular Aggregation of Enzymes on Carbon Adsorbent Surfaces and the Effect of this Process on the Biocatalytic Properties of Immobilized Lipase","authors":"G. A. Kovalenko, L. V. Perminova, O. A. Borodina, Yu. V. Larichev, A. N. Salanov","doi":"10.1134/S0022476625090136","DOIUrl":"10.1134/S0022476625090136","url":null,"abstract":"The distribution character and supramolecular aggregation of the enzyme - recombinant lipase (rec-Lip) on the surfaces of carbon adsorbents, such as multiwalled carbon nanotubes (MWCNTs) and pyrocarbon supports (SibunitTM, activated carbon) are examined by small angle X-ray scattering (SAXS) and scanning electron microscopy (SEM) techniques. The SAXS studies show that rec-Lip molecules aggregate on the carbon surface with the formation of nanoparticles with sizes from 4 nm (monomers) to 26 nm (aggregates of more than 10 molecules). SEM images demonstrate that not only single round nanoparticles with a size more than 20 nm but also complex branched aggregates formed by short fibrils of single nanoparticles are observed on the surface. It is revealed that the enzyme activity of biocatalysts prepared by rec-Lip adsorption on carbon supports has the minimum value if the enzyme is in the monomeric form. Information about the distribution character of the immobilized enzyme on the adsorbent surfaces and about its supramolecular aggregation is not only of the fundamental value for heterogeneous biocatalysis, but are also of scientific and practical value because these processes govern the properties of biocatalysts, primarily, their enzyme activity.","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"66 9","pages":"1908 - 1921"},"PeriodicalIF":1.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248245","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}

引用次数: 0

Synthesis, Characterization and X-Ray Crystal Structures of Two Schiff Base Copper(II) Complexes with Catalytic Property 两种具有催化性能的席夫碱铜（II）配合物的合成、表征和x射线晶体结构

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090094

Z. Hu, Q. -W. Yang, Y. -C. Zhou, Y. -L. Ren, Y. Lei

引用次数: 0

Structural and Sensing Properties of Tetra-tert-Butyl Substituted Zinc(II) Naphthalocyanine Films 四叔丁基取代锌（II）萘菁薄膜的结构与传感性能

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090033

M. S. Polyakov, A. S. Sukhikh, D. D. Klyamer, T. V. Basova

引用次数: 0

3D Mn(II) Metal–Organic Framework Based on 2,5-Diiodoterephthalate 基于2,5-二碘对苯二甲酸酯的三维Mn（II）金属-有机骨架

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090100

M. A. Bondarenko, A. S. Zaguzin, N. A. Korobeinikov, R. V. Redkin, E. A. Pilyukova, A. V. Zaitsev, I. V. Korolkov, M. I. Rakhmanova, S. A. Adonin

引用次数: 0

Conformational Isomorphism and Structure Determinants in the Crystal Structure of (2R,3R)-5-(2-(chloroacetoxy)-2-(3,4-diacetoxyphenyl)-4-Oxochroman-3,7-Diyl Diacetate （2R,3R）-5-(2-（氯乙酰氧基）-2-（3,4-二乙酰氧基苯基）-4-氧罗马-3,7-二乙酸二酯晶体结构的构象同构性和结构决定因素

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090070

A. M. Banaru, M. P. Koroteev, A. O. Pozdeev, V. A. Bataev, A. M. Koroteev, K. A. Lysenko

引用次数: 0

Preparation, Crystallographic Feature, and Hirshfeld Surface Analysis of Two Organic Salts Based 两种有机盐的制备、晶体学特征及赫希菲尔德表面分析

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090069

R. Gao, Y. Ji, Y. Cai, X. Ma, Z. Li, S. Jin, D. Wang

{"title":"Preparation, Crystallographic Feature, and Hirshfeld Surface Analysis of Two Organic Salts Based","authors":"R. Gao, Y. Ji, Y. Cai, X. Ma, Z. Li, S. Jin, D. Wang","doi":"10.1134/S0022476625090069","DOIUrl":"10.1134/S0022476625090069","url":null,"abstract":"Two salts of 1,2-diaminobenzene (dab) as acceptor with the trichloroacetic acid and 4-nitro-phthalic acid as donor were prepared and featured by the multiple analytical techniques of FTIR, elemental analysis (EA), and single crystal X-ray diffraction (SCXRD). The structural studies tell that the cation and anion are joined together by the energetic N+–H⋯O– H-bonds due to the transfer of the proton from the donor to the acceptor. The salts show well resolved proton transfer bands in the regions where neither the donor nor the acceptor has any IR peaks. Spectrophotomeric and crystallographic studies have ensured the formation of 2:1/1:1 salts. The chief non-covalent interactions were counted via the Hirshfeld surface analysis. Despite variations of the carboxylic acids, there both bore the strong intermolecular N–HO H-bonds. Apart from the strong classical H-bonds, other supramolecular associates of O–O, Cl–C/Cl–O/Cl–Cl, CH–O, C–π, and π–π are also involved in the spatial stretchings. The anionic C7 chain was built at 2 by the O–H⋯O H-bonds. The roles of these non-covalent contacts are made clear. For the combination of the weak contacts, both salts exhibited the 3D views.","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"66 9","pages":"1831 - 1846"},"PeriodicalIF":1.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248297","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}

引用次数: 0

Erratum to: Synthesis, and Crystal Strucrures of a 1D Cobalt-Coordination Polymer Based on a Flexible Imidazole-Linked Naphthalenediimide Ligand and its Polymorphic Forms 基于咪唑-萘二亚胺柔性配体的一维钴配位聚合物的合成、晶体结构及其多态形式的勘误

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090227

J. K. Nath, N. Phukan, K. K. Bania

引用次数: 0

Structure and 19F, 1H NMR Spectra of Zinc Hexafluorozirconate Hydrates 六氟锆酸锌水合物的结构和19F， 1H NMR谱

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S0022476625090045

A. B. Slobodyuk, M. M. Polyantsev, N. A. Didenko

引用次数: 0

Crystal Structure and Electrodynamic Parameters of the BaFe12–xInxO19 (x = 0–5) Indium-Doped Barium Hexaferrite 掺铟钡六铁体BaFe12-xInxO19 （x = 0-5）的晶体结构和电动力学参数

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S002247662509001X

A. Y. Punda, V. E. Zhivulin, D. S. Klygach, S. A. Gudkova, D. A. Vinnik

引用次数: 0

Influence of Hydrated Environment on Luminescent Properties of Pr(III) and Eu(III) Heterolanthanide Complexes with Cucurbituril 水合环境对Pr（III）和Eu（III）异镧系瓜脲配合物发光性能的影响

IF 1.4 4区化学

Journal of Structural Chemistry Pub Date : 2025-10-09 DOI: 10.1134/S002247662509015X

M. I. Rakhmanova, T. S. Sukhikh, E. A. Kovalenko

{"title":"Influence of Hydrated Environment on Luminescent Properties of Pr(III) and Eu(III) Heterolanthanide Complexes with Cucurbituril","authors":"M. I. Rakhmanova, T. S. Sukhikh, E. A. Kovalenko","doi":"10.1134/S002247662509015X","DOIUrl":"10.1134/S002247662509015X","url":null,"abstract":"Supramolecular lanthanide complexes with cucurbituril [{EuxPr1–x(H2O)5(NO3)}2CB[6]](NO3)4·HNO3 6H2O (x = 0.25, 0.5, 0.75, structural type I) are prepared. Keeping these compounds over CaCl2 results in a phase transition which is caused by partial loss of water molecules and leads to the formation of [{Eux Pr1–x(H2O)3(NO3)2}2CB[6]](NO3)2HNO3 (structural type II). The I to II transition takes 24 h and is reversible: when kept in water vapors for 2 h, II transforms completely into I. Luminescent properties of I and II are studied. Differences between the intensities of bands assigned to hypersensitive Eu-centered 5D0 → 7F2 transitions are due to the fact that coordination environments of the central atom are different and contain five (for I) and three (for II) aqualigands. Significantly higher quantum yield of II is due to the suppression of luminescence quenching by O–H vibrations.","PeriodicalId":668,"journal":{"name":"Journal of Structural Chemistry","volume":"66 9","pages":"1932 - 1941"},"PeriodicalIF":1.4,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248384","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}

引用次数: 0