Xin E Duan, Ze Jin Jiang, Hong Bo Tong, Sheng Di Bai
{"title":"Synthesis and diverse crystal packing in o-, m- and p-bis(carbonylthioureido)benzenes containing bisferrocenes.","authors":"Xin E Duan, Ze Jin Jiang, Hong Bo Tong, Sheng Di Bai","doi":"10.1107/S2053229625000282","DOIUrl":"10.1107/S2053229625000282","url":null,"abstract":"<p><p>Three bisferrocene-based bis(acylthiourea) positional isomers, namely, 1,2-bis(ferrocenylcarbonylthioureido)benzene (1), 1,3-bis(ferrocenylcarbonylthioureido)benzene (2) and 1,4-bis(ferrocenylcarbonylthioureido)benzene (3), all [Fe<sub>2</sub>(C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>(C<sub>20</sub>H<sub>16</sub>N<sub>4</sub>O<sub>2</sub>S<sub>2</sub>)], have been synthesized via facile nucleophilic addition reactions of 2.3 equivalents of ferrocenoyl isothiocyanate with o-, m- and p-phenylenediamine, respectively. The structures of the three new synthesized isomers were fully characterized by <sup>1</sup>H NMR, <sup>13</sup>C NMR, IR and UV-Vis spectroscopy, elemental analyses and cyclic voltammetry. In addition, the structures of acetone monosolvated compound 1 (1·CH<sub>3</sub>COCH<sub>3</sub>), as well as compounds 2 and 3, have been determined by single-crystal X-ray diffraction. A combination of intermolecular N-H...S and C-H...S hydrogen bonds connects the components of compound 1·CH<sub>3</sub>COCH<sub>3</sub> into infinite helix chains. Two pairs of different N-H...S and C-H...S intermolecular hydrogen bonds, as well as N-H...O and C-H...π co-operating interactions, link the molecules of compound 2 into a two-dimensional network. In contrast, compound 3 displays a one-dimensional double-chain array via two intermolecular C-H...S hydrogen bonds. Therefore, the three reported positional isomers present unique individual crystal assemblies.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"82-92"},"PeriodicalIF":0.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143021618","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}
Dirk Hollenwäger, Valentin Bockmair, Andreas J Kornath
{"title":"The crystal structures of methyl prop-2-ynoate, dimethyl fumarate and their protonated species.","authors":"Dirk Hollenwäger, Valentin Bockmair, Andreas J Kornath","doi":"10.1107/S2053229624011653","DOIUrl":"10.1107/S2053229624011653","url":null,"abstract":"<p><p>Methyl prop-2-ynoate (C<sub>4</sub>H<sub>4</sub>O<sub>2</sub>) was investigated in the binary superacidic system HF/MF<sub>5</sub> (M = Sb or As) and dimethyl fumarate (C<sub>6</sub>H<sub>8</sub>O<sub>4</sub>) in the superacidic system HF/SbF<sub>5</sub>, as well as HF/BF<sub>3</sub>. The starting materials methyl prop-2-ynoate and dimethyl fumarate were crystallized, the former for the first time. The protonated species of these esters, namely, (1-methoxyprop-2-yn-1-ylidene)oxidanium hexafluoroarsenate, C<sub>4</sub>H<sub>5</sub>O<sub>2</sub><sup>+</sup> AsF<sub>6</sub><sup>-</sup>, 1,4-dimethoxy-4-oxobut-2-en-1-ylidene]oxidanium tetrafluoroborate bis(hydrogen fluoride), C<sub>6</sub>H<sub>9</sub>O<sub>4</sub><sup>+</sup> BF<sub>4</sub><sup>-</sup> 2HF, and hemi{[1,4-dimethoxy-4-oxidaniumylidenebut-2-en-1-ylidene]oxidanium} undecafluorodiantimonate, 0.5C<sub>6</sub>H<sub>10</sub>O<sub>4</sub><sup>2+</sup> Sb<sub>2</sub>F<sub>11</sub><sup>-</sup>, were characterized by single-crystal X-ray diffraction and Raman spectroscopy. The protonated species were recrystallized from anhydrous hydrogen fluoride. In the solid state of the monoprotonated species of methyl prop-2-ynoate and the diprotonated species of dimethyl fumarate, strong intramolecular O-H...F hydrogen bonds build a three-dimensional network. The monoprotonated species of dimethyl fumarate builds chains by strong O-H...O hydrogen bonds between the cations.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"31-37"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798966","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}
Angelina Vypritskaia, Xiaodong Zou, Taimin Yang, David Geoffrey Waterman
{"title":"How to use DIALS to process chemical crystallography 3D ED rotation data from pixel array detectors.","authors":"Angelina Vypritskaia, Xiaodong Zou, Taimin Yang, David Geoffrey Waterman","doi":"10.1107/S2053229624011148","DOIUrl":"10.1107/S2053229624011148","url":null,"abstract":"<p><p>The DIALS package provides a set of tools for crystallographic data processing. The open-source nature of the project, and a flexible interface in which individual command-line programs each have a dedicated job, have enabled the adaptation of DIALS to a wide range of experiment types, including electron diffraction. Here we present detailed instructions for the use of DIALS to process chemical crystallography diffraction data from continuous rotation electron diffraction experiments. We demonstrate processing and structure solution from three different samples from three different instruments, including two commercial instruments dedicated to electron diffraction. Each instrument has a pixel array detector, allowing low-noise data to be obtained, resulting in high quality structures. Various new features were added to DIALS to simplify the workflow for these use cases. These are described in detail, along with useful program options for electron diffraction work.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"1-13"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783564","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}
Jarosław Sukiennik, Andrzej Olczak, Katarzyna Gobis, Izabela Korona-Głowniak, Katarzyna Suśniak, Andrzej Fruziński, Małgorzata Szczesio
{"title":"Synthesis, structure and biological activity of new picolinohydrazonamide derivatives.","authors":"Jarosław Sukiennik, Andrzej Olczak, Katarzyna Gobis, Izabela Korona-Głowniak, Katarzyna Suśniak, Andrzej Fruziński, Małgorzata Szczesio","doi":"10.1107/S2053229624011549","DOIUrl":"10.1107/S2053229624011549","url":null,"abstract":"<p><p>Three new thiosemicarbazide derivatives are described in terms of synthesis, structure and biological activity. N'-(Morpholine-4-carbonothioyl)-4-(4-phenylpiperazin-1-yl)picolinohydrazonamide 2-methyltetrahydrofuran hemisolvate, 2C<sub>21</sub>H<sub>27</sub>N<sub>7</sub>OS·C<sub>5</sub>H<sub>10</sub>O, 1, determined at 100 K, has orthorhombic (Pca2<sub>1</sub>) symmetry and exhibits disorder. 4-(4-Phenylpiperazin-1-yl)-N'-(piperidine-1-carbonothioyl)picolinohydrazonamide-dimethylformamide-water (1/1/0.285), C<sub>22</sub>H<sub>29</sub>N<sub>7</sub>S·C<sub>3</sub>H<sub>7</sub>NO·0.285H<sub>2</sub>O, 2, determined at 100 K, has monoclinic (P2<sub>1</sub>/c) symmetry. 4-(4-Phenylpiperazin-1-yl)-N'-(pyrrolidine-1-carbonothioyl)picolinohydrazonamide, C<sub>21</sub>H<sub>27</sub>N<sub>7</sub>S, 3, determined at 100 K, has triclinic (P1) symmetry and exhibits disorder. Compounds 1 and 2 contain solvent molecules in their structure. All three studied compounds adopt the zwitterionic form and were tested for their microbiological activity on a model panel of Gram-positive and Gram-negative bacteria, as well as selected yeasts.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"22-30"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783674","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}
Yao Zhang, Yan Juan Wang, Yuan Yuan Tang, Xiao Gang Chen
{"title":"Crown ether inclusion compound 3,4-difluoroanilinium di(methanesulfonyl)amidate-18-crown-6 (1/1) clathrate.","authors":"Yao Zhang, Yan Juan Wang, Yuan Yuan Tang, Xiao Gang Chen","doi":"10.1107/S2053229624011872","DOIUrl":"10.1107/S2053229624011872","url":null,"abstract":"<p><p>In recent years, molecular-based ferroelectric materials have attracted widespread research interest due to their excellent performance. Among them, host-guest-type crown ether inclusion compounds composed of organic ammonium cations, crown ether molecules and corresponding anions have become a star component in the design of molecular-based ferroelectric materials because they are prone to order-disorder phase transitions. Many anions have been studied extensively as counter-ions, such as bis(trifluoromethanesulfonyl)amidate (TFSA<sup>-</sup>), PF<sub>6</sub><sup>-</sup> and [FeCl<sub>4</sub>]<sup>-</sup>. However, crown ether inclusion compounds with di(methanesulfonyl)amidate (DMSA) as the anion have been rarely investigated. Here, we converted TFSA to DMSA to obtain 3,4-difluoroanilinium di(methanesulfonyl)amidate-18-crown-6 (1/1), C<sub>6</sub>H<sub>6</sub>F<sub>2</sub>N<sup>+</sup>·C<sub>2</sub>H<sub>6</sub>NO<sub>4</sub>S<sub>2</sub><sup>-</sup>·C<sub>12</sub>H<sub>24</sub>O<sub>6</sub> or [(3,4-DFA)(18-crown-6)][DMSA]. At both 100 and 300 K, the crystal falls into the space group P2<sub>1</sub>/c. The 3,4-DFA cation forms three well-defined N-H...O hydrogen bonds, positioned at the perching position of the crown ether ring. In contrast to the distinct packing configuration observed in the [(3,4-DFA)(18-crown-6)][TFSA] crystals, where TFSA exhibits a disordered structure, the [(3,4-DFA)(18-crown-6)][DMSA] complex features a staggered arrangement, with DMSA existing in an ordered fashion.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"38-42"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142833421","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}
{"title":"A twofold interpenetrated three-dimensional barium(II) metal-organic framework constructed from 2,2'-[terephthaloylbis(azanediyl)]diacetate: synthesis, structure, dihydrogen bonding and spectroscopic properties.","authors":"Xin Yi Zhao, Hai Yan Yu, Hong Tao Zhang","doi":"10.1107/S205322962401235X","DOIUrl":"https://doi.org/10.1107/S205322962401235X","url":null,"abstract":"<p><p>A new twofold interpenetrated 3D metal-organic framework (MOF), namely, poly[[μ-aqua-diaqua{μ<sub>4</sub>-2,2'-[terephthaloylbis(azanediyl)]diacetato}barium(II)] dihydrate], {[Ba(C<sub>12</sub>H<sub>10</sub>N<sub>2</sub>O<sub>6</sub>)(H<sub>2</sub>O)<sub>3</sub>]·2H<sub>2</sub>O}<sub>n</sub>, (I), has been assembled through a combination of the reaction of 2,2'-[terephthaloylbis(azanediyl)]diacetic acid (TPBA, H<sub>2</sub>L) with barium hydroxide and crystallization at low temperature. In the crystal structure of (I), the nine-coordinated Ba<sup>II</sup> ions are bridged by two μ<sub>2</sub>-aqua ligands and two carboxylate μ<sub>2</sub>-O atoms to form a 1D loop-like Ba-O chain, which, together with the other two coordinated water molecules and μ<sub>2</sub>-carboxylate groups, produces a rod-like secondary building unit (SBU). The resultant 1D polynuclear SBUs are further extended into a 3D MOF via the terephthalamide moiety of the ligand as a spacer. Two intramolecular dihydrogen bonds (DHBs) between the imine H atoms and the arene H atoms contribute to maintaining the 3D structure. In the crystal, two independent MOFs interpenetrate each other, thereby producing a twofold interpenetrated 3D architecture with a 4-connected PtS-X topology. Intermolecular hydrogen bonding and π-π interactions contribute to the stability of the twofold interpenetrated 3D architecture. The noncovalent interactions in the coordination polymer (CP) were further investigated by Hirshfeld surface analysis and the results show that the prominent interactions are H...O (39.6%) and H...H (34.4%), as well as Ba...O (9.8%), contacts. The 3D CP (I) exhibits a fluorescence emission with a quantum yield of 0.134.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":"81 Pt 1","pages":"43-53"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142926276","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}
{"title":"A personal account of the history of X-ray crystallography at the University of La Plata, Argentina.","authors":"Oscar Enrique Piro","doi":"10.1107/S2053229624011495","DOIUrl":"10.1107/S2053229624011495","url":null,"abstract":"<p><p>Prompted by visionary political leaders and a flowering economy, the University of La Plata was founded in 1905, the third Argentinian university after the Universities of Cordoba (1613) and Buenos Aires (1821). Differing from the older universities, more prone to professional formation, the new university was oriented towards teaching and scientific research following western European academic tradition. Along with the university was created the Institute of Physics, the first of its kind in Latin America. To pursue the foundational plan, the university recruited distinguished German physicists, some of whom became the first directors. From the start, the institute became acquainted with Röntgen rays, their generation and use, initially for radiographic images and later in occasional diffraction studies. The first dedicated crystallographic X-ray diffraction laboratory was set up in the early 1970s, when it solved the first molecular structures. Soon the fascination brought about by a methodology that afforded the visualization of atoms, molecules and crystals lured the local and national physical chemistry communities. In close partnership with an equally oriented laboratory at the University of Sao Paulo, Brazil, and in collaboration with several physical chemistry laboratories from Argentina and the Latin American region, and also from Europe, we undertook studies on the crystal structures and physicochemical and spectroscopic properties of a wide range of materials, including inorganic, organic, bioinorganic, metal-organic, organic-metal, supramolecular, pharmaceutical, organic minerals and liquid crystals. The present essay is a personal account of the origin and development of structural X-ray crystallography at the University of La Plata and its impact on the scientific research of Argentina and Latin America.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"14-21"},"PeriodicalIF":0.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783563","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}
Valentin Bockmair, Andreas Klöck, Dirk Hollenwäger, Andreas J Kornath
{"title":"Diprotonation of taurine: 2-[dihydroxy(oxo)sulfanyliumyl]ethanaminium bis[hexafluoroarsenate(V)].","authors":"Valentin Bockmair, Andreas Klöck, Dirk Hollenwäger, Andreas J Kornath","doi":"10.1107/S2053229624010489","DOIUrl":"10.1107/S2053229624010489","url":null,"abstract":"<p><p>Taurine is part of the cysteine cycle and is one of the few naturally occuring organosulfur-based molecules in the human body. As implied by modern studies, protonated taurine is of biological impact. The first attempts to isolate its protonated species in the binary superacidic system HF/SbF<sub>5</sub> were performed by Hopfinger, resulting in the isolation of monoprotonated taurine. Since the chosen conditions seemed rather harsh, investigations in less acidic systems were performed at room temperature to explore the involved protonated species. Herein, we present the structure of 2-[dihydroxy(oxo)sulfanyliumyl]ethanaminium bis[hexafluoridoarsenate(V)], [H<sub>2</sub>O<sub>3</sub>SC<sub>2</sub>H<sub>4</sub>NH<sub>3</sub>][AsF<sub>6</sub>]<sub>2</sub>, the diprotonated form of 2-aminoethanesulfonic acid (taurine). It was synthesized in the binary superacidic system HF/AsF<sub>5</sub> and crystallizes as colourless needles. Diprotonated taurine was structurally characterized by single-crystal X-ray diffraction analysis, low-temperature vibrational spectroscopy and NMR spectroscopy.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"781-786"},"PeriodicalIF":0.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11619780/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sebastian Steiner, Kristina Djordjevic, Valentin Bockmair, Dirk Hollenwäger, Andreas J Kornath
{"title":"Protonated oxalyl chloride and the ClCO<sup>+</sup> cation.","authors":"Sebastian Steiner, Kristina Djordjevic, Valentin Bockmair, Dirk Hollenwäger, Andreas J Kornath","doi":"10.1107/S2053229624010714","DOIUrl":"10.1107/S2053229624010714","url":null,"abstract":"<p><p>The reactions of oxalyl chloride were investigated in the binary superacidic systems HF/SbF<sub>5</sub> and DF/SbF<sub>5</sub>. O-Monoprotonated oxalyl chloride was isolated and represents the first example of a protonated acyl chloride. Diprotonated oxalyl chloride is only stable in solution. Salts of the ClCO<sup>+</sup> cation were synthesized from the reactions of oxalyl chloride or COClF with SbF<sub>5</sub> in 1,1,1,2-tetrafluoroethane (R-134a, CF<sub>3</sub>CFH<sub>2</sub>). The colourless salts were characterized by low-temperature vibrational spectroscopy, NMR spectroscopy and single-crystal X-ray diffraction. (1,2-Dichloro-2-oxoethylidene)oxidanium hexafluoridoantimonate(V), [C<sub>2</sub>O(OH)Cl<sub>2</sub>][SbF<sub>6</sub>], crystallizes in the monoclinic space group P2<sub>1</sub> and carbonyl chloride hexadecafluoridotriarsenate(V) [ClCO][Sb<sub>3</sub>F<sub>16</sub>], in the trigonal space group P3<sub>1</sub>, with two and three formula units per unit cell, respectively. Monoprotonated oxalyl chloride and the ClCO<sup>+</sup> cation both display very short C-Cl bonds with a strong double-bond character.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"792-797"},"PeriodicalIF":0.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11619778/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Brendan F Abrahams, Richard Robson, Christopher J Commons
{"title":"A polymeric form of basic iron(III) acetate with an acetic acid ligand.","authors":"Brendan F Abrahams, Richard Robson, Christopher J Commons","doi":"10.1107/S2053229624010672","DOIUrl":"10.1107/S2053229624010672","url":null,"abstract":"<p><p>A new crystalline compound, catena-poly[hexa-μ-acetato-(acetic acid)-μ<sub>3</sub>-oxido-triangulo-triiron(III)]-μ-acetato], [Fe<sub>3</sub>(C<sub>2</sub>H<sub>3</sub>O<sub>2</sub>)<sub>7</sub>O(C<sub>2</sub>H<sub>4</sub>O<sub>2</sub>)]<sub>n</sub>, incorporating the basic ferric acetate unit, has been obtained from an acetic anhydride solution of hydrated iron(III) nitrate. The crystals have the composition Fe<sub>3</sub>O(OAc)<sub>7</sub>(HOAc) (HOAc is acetic acid) and include the well-known [Fe<sub>3</sub>O(OAc)<sub>6</sub>]<sup>+</sup> unit, in which the Fe<sup>III</sup> centres are linked to a central coplanar μ<sub>3</sub>-oxido ligand. Acetate ions provide bridges between pairs of Fe<sup>III</sup> centres. These individual [Fe<sub>3</sub>O(OAc)<sub>6</sub>]<sup>+</sup> units are linked by additional bridging acetate anions to form zigzag chains. The bridging acetate ions coordinate to a position trans to the oxido group on two of the Fe<sup>III</sup> centres. Remarkably, the trans site on the third Fe<sup>III</sup> centre is occupied by the carbonyl group of an acetic acid molecule. This is the first reported case of an acetic acid molecule coordinating to an Fe<sup>III</sup> centre. Not surprisingly, the acetic acid molecule is only weakly coordinating, resulting in a short Fe-O(oxido) bond trans to the carbonyl group. The trans influence apparent in this structure provides an interesting contrast with the structurally similar Mn<sup>III</sup> analogue, in which the corresponding pair of trans bonds are both elongated because of the Jahn-Teller effect.</p>","PeriodicalId":7115,"journal":{"name":"Acta Crystallographica Section C Structural Chemistry","volume":" ","pages":"787-791"},"PeriodicalIF":0.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674810","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}