Acta Crystallographica Section E: Crystallographic Communications最新文献

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Crystal structure of (Z)-2-fluoro­benzyl 2-(5-fluoro-2-oxoindolin-3-yl­idene)hydrazinecarbodi­thio­ate dimethyl sulfoxide monosolvate (Z)-2-氟苄基-2-(5-氟-2-氧吲哚-3-基烯)肼糖硫代二甲基亚砜单溶剂化物的晶体结构。
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S205698902600561X
Mohd Abdul Fatah Abdul Manan, David B. Cordes, Aidan P. McKay
{"title":"Crystal structure of (Z)-2-fluoro­benzyl 2-(5-fluoro-2-oxoindolin-3-yl­idene)hydrazinecarbodi­thio­ate dimethyl sulfoxide monosolvate","authors":"Mohd Abdul Fatah Abdul Manan,&nbsp;David B. Cordes,&nbsp;Aidan P. McKay","doi":"10.1107/S205698902600561X","DOIUrl":"10.1107/S205698902600561X","url":null,"abstract":"<div><div>The title solvate, C<sub>16</sub>H<sub>11</sub>F<sub>2</sub>N<sub>3</sub>OS<sub>2</sub>·C<sub>2</sub>H<sub>6</sub>OS, crystallized with two independent mol­ecules (<em>A</em> and <em>B</em>) in the asymmetric unit. Both mol­ecules exhibit an L-shaped geometry but slightly differ in the orientation of the <em>o</em>-fluoro­benzyl ring with respect to the 5-fluoro­isatin ring: this dihedral angle is 89.1 (5)° in mol­ecule <em>A</em> and 86.3 (5)° in mol­ecule <em>B</em>. In the crystal, the <em>A</em> and <em>B</em> mol­ecular conformations are stabilized <em>via</em> N—H⋯O intra­molecular hydrogen bonds. Both independent mol­ecules are linked <em>via</em> a weak directional C—H⋯F inter­molecular hydrogen bond, resulting in the formation of dimers. The supra­molecular network mainly comprises C<sub>ar</sub>—H⋯F and C<sub>ar</sub>—H⋯S hydrogen bonds, homohalogen Type I F⋯F halogen⋯halogen bonds and S⋯O chalcogen bonds.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 773-776"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389683","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 and crystal structure of NaCsB5O8(OH)·H2O NaCsB5O8(OH)·H2O的合成及晶体结构
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S2056989026006018
Mei-Jun Zou, Xiao-Liang Zhou, Jian-Wen Cheng, Yi-Hang Wen
{"title":"Synthesis and crystal structure of NaCsB5O8(OH)·H2O","authors":"Mei-Jun Zou,&nbsp;Xiao-Liang Zhou,&nbsp;Jian-Wen Cheng,&nbsp;Yi-Hang Wen","doi":"10.1107/S2056989026006018","DOIUrl":"10.1107/S2056989026006018","url":null,"abstract":"<div><div>The solvothermal reaction of H<sub>3</sub>BO<sub>3</sub>, Cs<sub>2</sub>CO<sub>3</sub>, NaBO<sub>2</sub>·4H<sub>2</sub>O, formic acid and ethanol led to a new mixed alkali metal borate, NaCsB<sub>5</sub>O<sub>8</sub>(OH)·H<sub>2</sub>O, sodium caesium penta­borate hydroxide monohydrate. Its crystal structure contains penta­borate [B<sub>5</sub>O<sub>10</sub>(OH)]<sup>6–</sup> building units, and displays a layered structure containing nine-membered rings. The layers extend parallel to the <em>ab</em> plane and are stacked along the <em>c</em> axis. Na<sup>+</sup> and Cs<sup>+</sup> cations are situated between the layers and bond to oxygen atoms with coordination numbers of 7 and 10, respectively. The water mol­ecule likewise occupies the inter­layer space and is hydrogen-bonded to the layers, both as a donor and an acceptor.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 821-824"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389767","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 catena-poly[2-bromo­ethyl­ammonium [tin(II)-tri-μ-bromido]] 链链聚[2-溴-乙基铵][锡(II)-三μ-溴]]的晶体结构。
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S2056989026006079
Valeriia M. Ovdenko, Mircea-Odin Apostu, Irina A. Golenya, Anna Yu. Myronenko, Il’ya A. Gural’skiy
{"title":"Crystal structure of catena-poly[2-bromo­ethyl­ammonium [tin(II)-tri-μ-bromido]]","authors":"Valeriia M. Ovdenko,&nbsp;Mircea-Odin Apostu,&nbsp;Irina A. Golenya,&nbsp;Anna Yu. Myronenko,&nbsp;Il’ya A. Gural’skiy","doi":"10.1107/S2056989026006079","DOIUrl":"10.1107/S2056989026006079","url":null,"abstract":"<div><div>In the structure of the title salt, {(C<sub>2</sub>H<sub>7</sub>BrN)[SnBr<sub>3</sub>]}<sub><em>n</em></sub>, the tin(II)atom features a strongly distorted octa­hedral environment ensured by six bromido ligands. By face-sharing, these SnBr<sub>6</sub> coordination octa­hedra are connected into polymeric chains, which propagate along the <em>b-</em>axis direction. Organic cations, stabilized in a <em>gauche</em> conformation, inter­leave the inorganic polymeric chains. Hydrogen bonds of the type N—H⋯Br between organic cations and inorganic chains create supra­molecular layers parallel to the <em>ab</em> plane. These layers inter­act with each other thought weak C—H⋯Br contacts.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 825-828"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389655","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 and crystal structure of fac-[3-bromo-6-(1H-pyrazol-1-yl-κN2)pyridazine-κN1]tri­carbonyl­chlorido­rhenium di­methyl­formamide monosolvate [3-溴-6-(1h -吡唑-1-酰基-κ n2)吡嗪-κ n2]三羰基-氯-铼二甲基甲酰胺单溶剂化物的合成及晶体结构
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S2056989026006249
Duval Donoso, Nicolás Biget, Nancy Pizarro, Andrés Vega
{"title":"Synthesis and crystal structure of fac-[3-bromo-6-(1H-pyrazol-1-yl-κN2)pyridazine-κN1]tri­carbonyl­chlorido­rhenium di­methyl­formamide monosolvate","authors":"Duval Donoso,&nbsp;Nicolás Biget,&nbsp;Nancy Pizarro,&nbsp;Andrés Vega","doi":"10.1107/S2056989026006249","DOIUrl":"10.1107/S2056989026006249","url":null,"abstract":"<div><div>The crystal structure of the title rhenium(I) complex [ReCl(C<sub>7</sub>H<sub>5</sub>BrN<sub>4</sub>)(CO)<sub>3</sub>]·C<sub>3</sub>H<sub>7</sub>NO or <em>fac</em>-[(pypyrBr-κ<sup>2</sup><em>N</em>,<em>N</em>)Re(CO)<sub>3</sub>Cl]·DMF [pypyrBr = 3-bromo-6-(1<em>H</em>-pyrazol-1-yl)pyridazine] is reported. The compound was synthesized by reacting <strong>Re(CO)<sub>5</sub>Cl</strong> with <strong>pypyrBr</strong> [3-bromo-6-(1<em>H</em>-pyrazol-1-yl)pyridazine] in toluene under reflux, yielding orange crystals upon purification and crystallization. Structural analysis reveals a distorted octa­hedral coordination environment around the Re<sup>I</sup> center, comprising three facial carbonyl ligands, one chloride, and the bidentate <strong>pypyrBr</strong> ligand. The ligand exhibits near planarity with minimal torsional deviation, and the N—Re—N bite angle is 73.50 (12)°. The complex crystallizes as a 1:1 di­methyl­formamide solvate, consolidated by hydrogen bonding between DMF and the ligand. A Cambridge Structural Database search confirmed the novelty of this structure, as no prior reports exist for <strong>pypyrBr</strong> or its metal complexes. Spectroscopic characterization (<sup>1</sup>H NMR, <sup>13</sup>C NMR, IR) and elemental analysis support the proposed structure. This work expands the family of rhenium(I) tricarbonyl complexes with pyrazolyl-pyridazine ligands, relevant for photophysical and coordination chemistry applications.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 845-848"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389721","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 and crystal structure of a new tetra­nuclear copper(II) complex based on the Schiff base (E)-2-[(2-hy­droxy-5-meth­oxy­benzyl­idene)amino]­benzoic acid 席夫碱(E)-2-[(2-羟基-5-甲基-氧基苯二胺)氨基]-苯甲酸新型四核铜(II)配合物的合成与晶体结构
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S2056989026005554
Dawei Li, Wanying Qi, Jingjing Wang, Haiyang Dong, Kuilin Lv, Kaige Shi
{"title":"Synthesis and crystal structure of a new tetra­nuclear copper(II) complex based on the Schiff base (E)-2-[(2-hy­droxy-5-meth­oxy­benzyl­idene)amino]­benzoic acid","authors":"Dawei Li,&nbsp;Wanying Qi,&nbsp;Jingjing Wang,&nbsp;Haiyang Dong,&nbsp;Kuilin Lv,&nbsp;Kaige Shi","doi":"10.1107/S2056989026005554","DOIUrl":"10.1107/S2056989026005554","url":null,"abstract":"<div><div>The title complex, bis­{μ<sub>4</sub>-(<em>E</em>)-2-[(5-meth­oxy-2-oxido­benzyl­idene)amino]­benzoato}bis­{μ<sub>2</sub>-(<em>E</em>)-2-[(5-meth­oxy-2-oxido­benzyl­idene)amino]­benzoato}tetra­copper(II), [Cu<sub>4</sub>(C<sub>15</sub>H<sub>11</sub>NO<sub>4</sub>)<sub>4</sub>] or Cu<sub>4</sub>(<em>L</em>)<sub>4</sub>, was synthesized by the solvothermal reaction of (<em>E</em>)-2-[(2-hy­droxy-5-meth­oxy­benzyl­idene)amino]­benzoic acid (H<sub>2</sub><em>L</em>) with copper(II) chloride. It crystallizes in the triclinic system with space group <em>P</em>ī. The tetra­nuclear structure consists of two fully symmetric dinuclear copper moieties. In the dinuclear copper structural unit, both copper(II) metal centers exhibit a five-coordinate NO<sub>4</sub> environment. Of the four coordinating oxygen atoms, two are phenolate oxygen atoms acting as bridges from two different ligands, while the other two oxygen atoms are derived from the carboxyl groups of two distinct ligands, respectively. <em>SHAPE</em> analysis indicates that both copper(II) centers adopt a distorted trigonal–bipyramidal (<em>D</em><sub>3<em>h</em></sub>) geometry. C—H⋯O hydrogen bonds and C—H⋯π inter­actions contribute to the cohesion of the crystal packing.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 794-798"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389740","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, crystal structure determination, Hirshfeld surface and crystal void analyses, inter­action energy calculations and energy frameworks of N-(2-chloro­phen­yl)-N′-propano­ylthio­urea N-(2-氯苯基)-N′-丙基硫代尿素的合成、晶体结构测定、Hirshfeld表面和晶体空洞分析、相互作用能计算和能量框架。
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S205698902600602X
Sharatha Kumar, Tuncer Hökelek
{"title":"Synthesis, crystal structure determination, Hirshfeld surface and crystal void analyses, inter­action energy calculations and energy frameworks of N-(2-chloro­phen­yl)-N′-propano­ylthio­urea","authors":"Sharatha Kumar,&nbsp;Tuncer Hökelek","doi":"10.1107/S205698902600602X","DOIUrl":"10.1107/S205698902600602X","url":null,"abstract":"<div><div>The title compound, C<sub>10</sub>H<sub>11</sub>ClN<sub>2</sub>S, consists of a chloro­phenyl ring and a propanoyl moiety bridged over a thio­urea functional group. The dihedral angle between the planar propinoyl and thio­urea groups is 8.33 (14)°, and they are oriented at 48.50 (14) and 56.09 (6)° with respect to the phenyl ring. The intra­molecular N—H⋯O hydrogen bond forms an S(6) ring motif. In the crystal, N—H⋯S hydrogen bonds link two mol­ecules, enclosing <em>R</em><sup>2</sup><sub>2</sub>(8) ring motifs, into centrosymmetric dimers. π–π stacking inter­actions help to consolidate the packing. Hirshfeld surface analysis revealed that the most important contributions for crystal packing are H⋯H (39.2%), H⋯Cl/Cl⋯H (15.8%), H⋯S/S⋯H (14.2%) and H⋯C/C⋯H (9.9%) inter­actions. The volume of the crystal voids and the percentage of free space were calculated to be 105.62 Å<sup>3</sup> and 9.33%, showing that there is no large cavity in the crystal packing. Computational methods indicated an N—H⋯S hydrogen-bonding energy of −53.5 kJ mol<sup>−1</sup>. Evaluations of the electrostatic, dispersion and total energy frameworks indicate that the crystal cohesion is dominated by electrostatic energy contributions.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 816-820"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389458","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 meso compound (2R,6S)-4-(5-bromo­pyrimidin-2-yl)-2,6-di­methyl­morpholine 中间体化合物(2R,6S)-4-(5-溴-嘧啶-2-基)-2,6-二甲基-啉的晶体结构。
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S2056989026006158
Paul R. Palme, Richard Goddard, Markus Leutzsch, Adrian Richter, Peter Imming, Rüdiger W. Seidel
{"title":"Crystal structure of the meso compound (2R,6S)-4-(5-bromo­pyrimidin-2-yl)-2,6-di­methyl­morpholine","authors":"Paul R. Palme,&nbsp;Richard Goddard,&nbsp;Markus Leutzsch,&nbsp;Adrian Richter,&nbsp;Peter Imming,&nbsp;Rüdiger W. Seidel","doi":"10.1107/S2056989026006158","DOIUrl":"10.1107/S2056989026006158","url":null,"abstract":"<div><div>The title compound, C<sub>10</sub>H<sub>14</sub>N<sub>3</sub>OBr, was prepared by a nucleophilic aromatic substitution reaction between 2,6-di­methyl­morpholine and 2-chloro­pyrimidine, followed by bromination of the pyrimidine ring. The compound crystallizes in the monoclinic system (space group <em>P</em>2<sub>1</sub>/c) with four mol­ecules in the unit cell (<em>Z</em> = 4). The mol­ecule exhibits approximate <em>C</em><sub>S</sub> point-group symmetry (r.m.s. deviation: 0.1072 Å). The arrangement of the mol­ecules in the solid state is dominated by close packing. C—H⋯N contacts between pyrimidinyl rings in adjacent mol­ecules with an <em>R</em><sup>2</sup><sub>2</sub>(6) motif are encountered, whereas the bromine atom does not exhibit any short contacts that could be regarded as halogen bonds.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 768-772"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389727","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 structures of fisetin dihydrate and luteolin monohydrate: crystallization from ethanol–water mixtures 二水合非瑟酮和一水合木犀草素的晶体结构:乙醇-水混合物结晶。
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S2056989026006353
Neta Caspin, Natalia Fridman, Avi Shpigelman
{"title":"Crystal structures of fisetin dihydrate and luteolin monohydrate: crystallization from ethanol–water mixtures","authors":"Neta Caspin,&nbsp;Natalia Fridman,&nbsp;Avi Shpigelman","doi":"10.1107/S2056989026006353","DOIUrl":"10.1107/S2056989026006353","url":null,"abstract":"<div><div>The crystal structures of two hydrates of aglycon flavonoids, fisetin dihydrate [systematic name: 2-(3,4-di­hydroxy­phen­yl)-3,7-dihy­droxy-4<em>H</em>-1-benzo­pyran-4-one dihydrate, C<sub>15</sub>H<sub>10</sub>O<sub>6</sub>·2H<sub>2</sub>O, <em>P</em>2<sub>1</sub>, <em>Z</em> = 2] and luteolin monohydrate [systematic name: 2-(3,4-di­hydroxy­phen­yl)-3,7-dihy­droxy-4<em>H</em>-1-benzo­pyran-4-one monohydrate, C<sub>15</sub>H<sub>10</sub>O<sub>6</sub>·H<sub>2</sub>O, <em>P</em>4<sub>1</sub>2<sub>1</sub>2, <em>Z</em> = 8] were determined by single-crystal X-ray diffraction (SCXRD) and are reported for the first time. The two crystal forms were obtained from ethanol–water mixtures. These structures provide a foundation for future studies on the thermodynamic role of water mol­ecules in crystal stability and packing, enabling further investigation of hydration effects on flavonoid solubility and stability.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 866-870"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389748","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
SrZnSi3O8, a synthetic member of the feldspar group SrZnSi3O8,长石族的合成成员。
IF 0.5
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-07-01 Epub Date: 2026-07-13 DOI: 10.1107/S2056989026005852
Matthias Weil
{"title":"SrZnSi3O8, a synthetic member of the feldspar group","authors":"Matthias Weil","doi":"10.1107/S2056989026005852","DOIUrl":"10.1107/S2056989026005852","url":null,"abstract":"<div><div>Strontium <em>tecto</em>-zincotrisilicate, SrZnSi<sub>3</sub>O<sub>8</sub>, is a synthetic member of the feldspar group with monoclinic symmetry (space group <em>P</em>2<sub>1</sub>/<em>n</em>, <em>Z</em> = 4). In comparison with the alkali feldspars, the aluminium-richest tetra­hedral site in these minerals is completely substituted by Zn, and the alkali metal <em>M</em> site by strontium. The crystal structure is fully ordered, <em>i.e.</em> there is no mutual co-occupation of the tetra­hedral sites or positional disorder of the <em>M</em> site. Although the tetra­hedral site substituted by Zn exhibits significantly longer bond lengths [<blockquote><div><figure><img></figure></div></blockquote>(Zn—O) = 1.973 Å] due to the incorporation of the larger cation, there is no noticeable distortion of the SiO<sub>4</sub> tetra­hedra compared to the aluminium-bearing feldspars. The coordination number of Sr<sup>2+</sup> is [6 + 2], with six short distances to oxygen sites in a narrow range [<blockquote><div><figure><img></figure></div></blockquote> = 2.560 Å] and two significantly longer distances &gt; 3.10 Å.</div></div>","PeriodicalId":7367,"journal":{"name":"Acta Crystallographica Section E: Crystallographic Communications","volume":"82 7","pages":"Pages 790-793"},"PeriodicalIF":0.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148389817","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
Dibasic 3,3′-di­nitro-4,4′-bipyrazole-1,1′-diides of K, Rb and Cs reveal metal-selective ring–π over ring–N coordination 二元3,3'-二硝基-4,4'-联吡唑-1,1'- K, Rb和Cs的分裂显示金属选择性环-π在环-n配位上。
IF 0.6
Acta Crystallographica Section E: Crystallographic Communications Pub Date : 2026-06-01 Epub Date: 2026-06-13 DOI: 10.1107/S2056989026005037
Kostiantyn V. Domasevitch , Vira V. Ponomarova
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