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Journal articles on the topic 'Imidol structure'

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Published: 5 June 2025

Last updated: 15 July 2025

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1

M., M. MOSTAFA, K. T. MAKY A., and M. IBRAHIM K. "Metal Complexes Derived from Isobutyric Acid Hydrazide with Some Bivalent Metal Ions." Journal of Indian Chemical Society Vol. 62, Jan 1985 (1985): 27–30. https://doi.org/10.5281/zenodo.6302306.

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Department of Chemistry, Faculty of Science, Mansoura University, Egypt <em>Manuscript received 16 November 1983, accepted 10 August 1984</em> The preparation and characterisation of some new metal complexes derived from, isobutyric acid hydrazide (IBH), of the types [M(IBH)X<sub>2</sub>]. [M(IBH)<sub>2</sub>X<sub>2</sub>(M = Co<sup>II</sup>, Ni<sup>II</sup>, Cu<sup>ll</sup>, Zn<sup>II</sup>, Cd<sup>II</sup> and Hg<sup>II</sup> ; X = CI, Br) and [M(IBH)<sub>3</sub>X<sub>2</sub>.H<sub>2</sub>O] (M=Co<sup>II</sup>, Ni<sup>II</sup>, Cu<sup>II</sup>, Zn<sup>II</sup> and Cd<sup>II</sup>) are r

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2

Sharma, Chanchal, Swapnil Yerande, Rajashree Chavan, and A. V. Bhosale. "Synthesis of Thienopyrimidines and their Antipsychotic Activity." E-Journal of Chemistry 7, no. 2 (2010): 655–64. http://dx.doi.org/10.1155/2010/369141.

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A series of thienopyrimidines and related heterocycles were synthesized by refluxing related imidoyl chloride with primary and secondary amines under microwave irradiation and classical heating. The imidoyl chlorides were synthesized from corresponding cyclic imides with phosphorus oxychlorides under microwave irradiation and classical heating. The structures of the compounds were confirmed by FT-IR, NMR. The synthesized compounds were screened for anti psychotic activity.

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3

Dong, Yuyang, Ryan M. Clarke, Shao-Liang Zheng, and Theodore A. Betley. "Synthesis and electronic structure studies of a Cr-imido redox series." Chemical Communications 56, no. 21 (2020): 3163–66. http://dx.doi.org/10.1039/d0cc00108b.

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We report a family of dipyrrinato Cr imido complexes in oxidation states ranging from Cr<sup>III</sup> to Cr<sup>V</sup> showcasing the influence of the weak-field dipyrrin on the electronic structure and coordination geometries of the Cr imides.

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4

Chivers, Tristram. "2001 E.W.R. Steacie Award LectureThe imido ligand in main group element chemistry." Canadian Journal of Chemistry 79, no. 12 (2001): 1841–50. http://dx.doi.org/10.1139/v01-170.

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The imido group (NR) is a versatile ligand in main group chemistry. The high reactivity of multiply bonded (terminal) imido derivatives of p-block elements is used, for example, in the aza-Wittig reaction, allylic aminations, and in peptide synthesis. As a bridging ligand, the imido group provides a cornerstone for a wide variety of binary cluster structures. This review is primarily concerned with the synthesis, structures, reactions, and ligand behaviour of imido derivatives of the heavy chalcogens (selenium and tellurium) as exemplified by the tellurium diimide dimer t-BuNTe(µ-N-t-Bu)2TeN-t

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5

Mahyaria, Amir Tofangchi, Nahid Shajari, Ali Reza Kazemizadeh, Katarzyna Ślepokura, Tadeusz Lis, and Ali Ramazani. "Regio- And Stereoselective Addition Of Imides To Ethyl 3-Phenyl-2- Propynoate In The Presence Of Triphenylphosphine. Single Crystal X-Ray Structure Of Ethyl (Z)-2-(1,3-Dioxo-1,3,3A,4,7,7A-Hexahydro-2H-Isoindol- 2-Yl)-3-Phenyl-2-Propenoate." Zeitschrift für Naturforschung B 62, no. 6 (2007): 829–34. http://dx.doi.org/10.1515/znb-2007-0612.

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A one-pot synthesis of sterically congested N-vinyl imides in fairly high yields by the reaction of ethyl 3-phenyl-2-propynoate, imides and triphenylphosphine is reported. The structures of these compounds were confirmed by IR, 1H, and 13C NMR spectroscopy, and by a single crystal X-ray structure determination. The structural analysis of the products indicated that the reaction is regioand stereoselective

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6

Jack, Kevin S., John C. Jeffery, Angela P. Leedham, Jason M. Lynam, Michael Niedzwiecki, and Christopher A. Russell. "Syntheses and structures of bis(imido)organophosphine dianions." Canadian Journal of Chemistry 80, no. 11 (2002): 1458–62. http://dx.doi.org/10.1139/v02-144.

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A bis(imido)phosphine dianion, [R'P(NR)2]2 (R' = n-Bu, R = N-N=CPh2) is produced from the reaction of PCl3 with benzophenone hydrazone (1:3 equiv) in THFNEt3, followed by metallation of the reaction mixture with 3 equiv n-BuLi. A more straightforward synthesis of a comparable dianion (with R' = Ph, R = N-N=CPh2) is the reaction of PhPCl2 with benzophenone hydrazone (1:2 equiv) in THFNEt3, followed by metallation of the reaction mixture with 2 equiv n-BuLi.Key words: phosphorus, lithium, imido, complexes, X-ray.

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7

Albright, Abigail L., Lucy Collins, John Li, Benjamin Harris, and Jonathan M. White. "Crystal Structures of the Amide and Iminol Tautomers O-(3,5-dinitrobenzoyloxy)benzohydroxamate. A Case of a Disappearing Solvate?" Australian Journal of Chemistry 69, no. 10 (2016): 1193. http://dx.doi.org/10.1071/ch16369.

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The O-(3,5-dinitrobenzoyl) derivative of benzohydroxamic acid 1 crystallizes in its iminol tautomeric form, hydrogen bonded to a molecule of dimethyl sulfoxide (DMSO) when crystallized from methanol in the presence of DMSO. In contrast, in the absence of DMSO, 1 crystallizes in its amide tautomeric form. Computations suggest that in the absence of DMSO, the amide tautomer of 1 is significantly more stable than the iminol form. Conversely, in the presence of DMSO, the two forms have comparable stabilities. Solution infrared spectra of 1 run in dichloromethane are consistent with the amide tauto

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8

Li, Bing-Feng, Xi-Ting Xu, Tong-Min Dong, et al. "Two new cadmium(II) coordination polymers based on imidazole-containing ligands: synthesis, structural characterization and fluorescence properties." Acta Crystallographica Section C Structural Chemistry 76, no. 4 (2020): 314–21. http://dx.doi.org/10.1107/s2053229620002594.

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The judicious selection of suitable ligands is vitally important in the construction of novel metal–organic frameworks (MOFs) with fascinating structures and interesting properties. Recently, imidazole-containing multidentate ligands have received much attention. Two new CdII coordination frameworks, namely, poly[tris{μ-1,4-bis[(1H-imidazol-1-yl)methyl]benzene-κ2 N 3:N 3′}tetrakis(nitrato-κ2 O,O′)dicadmium], [Cd2(NO3)4(C14H14N4)3] n , (I), and poly[[bis{μ3-1,3,5-tris[(1H-imidazol-1-yl)methyl]benzene-κ3 N 3:N 3′:N 3′′}cadmium] hexafluorosilicate], {[Cd(C18H18N6)2](SiF6)} n , (II), have been syn

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9

Marake, Daniel T., Penny P. Mokolokolo, Hendrik G. Visser, and Alice Brink. "Structural comparison of group 7 tricarbonyl complexes of 2-{[2-(1H-imidazol-4-yl)ethyl]iminomethyl}-5-methylphenolate." Acta Crystallographica Section C Structural Chemistry 71, no. 6 (2015): 423–29. http://dx.doi.org/10.1107/s2053229615008360.

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Two tricarbonyl complexes of rhenium(I) and manganese(I) coordinated by the ligand 2-{[2-(1H-imidazol-4-yl)ethyl]iminomethyl}-5-methylphenolate are reported,viz. fac-tricarbonyl(2-{[2-(1H-imidazol-4-yl-κN3)ethyl]iminomethyl-κN}-5-methylphenolato-κO)rhenium(I) methanol monosolvate, [Re(C16H14N3O4)(CO)3]·CH3OH, (I), andfac-tricarbonyl(2-{[2-(1H-imidazol-4-yl-κN3)ethyl]iminomethyl-κN}-5-methylphenolato-κO)manganese(I),fac-[Mn(C16H14N3O4)(CO)3], (II), display facial coordination in a distorted octahedral environment. The crystal structure of (I) is stabilized by O—H...O, N—H...O and C—H...O hydrog

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10

Bergamini, F. R. G., M. A. Ribeiro, P. C. M. L. Miranda, A. L. B. Formiga, and P. P. Corbi. "A novel binuclear copper complex incorporating a nalidixic acid derivative displaying a one-dimensional coordination polymeric structure." Acta Crystallographica Section C Structural Chemistry 72, no. 7 (2016): 544–48. http://dx.doi.org/10.1107/s2053229616008913.

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The identification of the antibacterial action of nalidixic acid (nx) was central to the development of the quinolone antibacterial compounds. The ability of the nx naphthyridyl ring to interact with and inhibit some proteins has encouraged the investigation of similar structures in the search for more active compounds with less adverse effects. The possibility of structural modification by attachment of other biologically active moieties to the naphthyridyl ring of nx allowed the development of new active antimicrobial molecules. Hydrazone derivatives of nx can be synthesized easily based on

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11

de Sousa Luis, José A., Normando A. da Silva Costa, Cristiane C. S. Luis, et al. "Synthesis of New Cyclic Imides Derived From Safrole, Structure- and Ligand-based Approaches to Evaluate Potential New Multitarget Agents Against Species of Leishmania." Medicinal Chemistry 16, no. 1 (2020): 39–51. http://dx.doi.org/10.2174/1573406415666190430144950.

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Background: Leishmaniasis is a neglected disease that does not have adequate treatment. It affects around 12 million people around the world and is classified as a neglected disease by the World Health Organization. In this context, strategies to obtain new, more active and less toxic drugs should be stimulated. Sources of natural products combined with synthetic and chemoinformatic methodologies are strategies used to obtain molecules that are most likely to be effective against a specific disease. Computer-Aided Drug Design has become an indispensable tool in the pharmaceutical industry and

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12

Raczuk, Edyta, Barbara Dmochowska, Justyna Samaszko-Fiertek, and Janusz Madaj. "Different Schiff Bases—Structure, Importance and Classification." Molecules 27, no. 3 (2022): 787. http://dx.doi.org/10.3390/molecules27030787.

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Schiff bases are a vast group of compounds characterized by the presence of a double bond linking carbon and nitrogen atoms, the versatility of which is generated in the many ways to combine a variety of alkyl or aryl substituents. Compounds of this type are both found in nature and synthesized in the laboratory. For years, Schiff bases have been greatly inspiring to many chemists and biochemists. In this article, we attempt to present a new take on this group of compounds, underlining of the importance of various types of Schiff bases. Among the different types of compounds that can be classi

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13

Xing, Tian, Mark R. J. Elsegood, Sophie H. Dale та Carl Redshaw. "Pentamethylcyclopentadienyl Molybdenum(V) Complexes Derived from Iodoanilines: Synthesis, Structure, and ROP of ε-Caprolactone". Catalysts 11, № 12 (2021): 1554. http://dx.doi.org/10.3390/catal11121554.

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The reaction of [Mo(η-C5Me5)Cl4] with the ortho-, meta-, or para-iodo-functionalized anilines 2-IC6H4NH2, 3-IC6H4NH2, 4-IC6H4NH2 yields imido or amine products of the type [Mo(η-C5Me5)Cl2(IC6H4N)] (2-I, 1, 3-I, 3, 4-I, 5) or [Mo(η-C5Me5)Cl4(IC6H4NH2)] (3-I, 2, 4-I, 4), respectively, depending on the reaction stoichiometry/conditions; we were unable to isolate an amine complex of the 2-I derivative. The reaction of [Mo(η-C5Me5)Cl4] with one equivalent of 2-I,4-FC6H3NH2 in the presence of Et3N afforded [Mo(η-C5Me5)Cl2(2-I,4-FC6H3N)]·MeCN (6·MeCN), which, upon exposure to air, afforded the Mo(VI)

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14

Calvo, J. H., C. Calvete, A. Martinez-Royo, et al. "Variations in the mitochondrial cytochrome c oxidase subunit I gene indicate northward expanding populations of Culicoides imicola in Spain." Bulletin of Entomological Research 99, no. 6 (2009): 583–91. http://dx.doi.org/10.1017/s0007485309006622.

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AbstractCulicoides imicola is the main vector for bluetongue (BT) and African horse sickness (AHS) viruses in the Mediterranean basin and in southern Europe. In this study, we analysed partial mitochondrial cytochrome c oxidase subunit I (COI) gene to characterize and confirm population expansion of Culicoides imicola across Spain. The data were analysed at two hierarchical levels to test the relationship between C. imicola haplotypes in Spain (n=215 from 58 different locations) and worldwide (n=277). We found nineteen different haplotypes within the Spanish population, including 11 new haplot

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15

Romanov, Vasily, Evgeny Tretyakov, Galina Selivanova, et al. "Synthesis and Structure of Fluorinated (Benzo[d]imidazol-2-yl)methanols: Bench Compounds for Diverse Applications." Crystals 10, no. 9 (2020): 786. http://dx.doi.org/10.3390/cryst10090786.

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A simple and general approach to the synthesis (from commercial precursors) of eight out of nine possible (benzo[d]imidazol-2-yl)methanols fluorinated on the benzene ring is reported. Molecular and crystalline structures of most compounds were solved by X-ray diffraction analysis. This made it possible to reveal the influence of the number and arrangement of fluorine atoms in the benzene cycle on the formation of intermolecular hydrogen bonds. It was found that the more fluorine atoms are present in a compound, the higher the dimensionality of the H-bonded structure is. Moreover, the presence

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16

Filippini, G., A. Gavezzotti, and J. J. Novoa. "Modelling the crystal structure of the 2-hydronitronylnitroxide radical (HNN): observed and computer-generated polymorphs." Acta Crystallographica Section B Structural Science 55, no. 4 (1999): 543–53. http://dx.doi.org/10.1107/s0108768199001202.

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The crystal structures of two polymorphs of 4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl 3-oxide (the 2-hydronitronylnitroxide radical, HNN) are analyzed by packing energy criteria. Other unobserved polymorphic crystal structures are generated using a polymorph predictor package and three different force fields, one of which is without explicit Coulomb-type terms. The relative importance of several structural motifs (hydrogen-bonded dimers, shape-interlocking dimers or extended hydrogen-bonded chains) is discussed. As usual, many crystal structures within a narrow energy range are genera

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17

Bai, Yüniu, Mathias Noltemeyer, and Herbert W. Roesky. "Synthese und Strukturen von Monoalkylamiden und -imiden des Titans / Synthesis and Structures of Monoalkylamides and -imides of Titanium." Zeitschrift für Naturforschung B 46, no. 10 (1991): 1357–63. http://dx.doi.org/10.1515/znb-1991-1014.

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A new method for the preparation of monoalkylamides of composition Cp′TiCl2NHR is reported. Me3SnNHR (R = tBu 1a, CHiPr2 1b) reacts with Cp′TiCl3 with elimination of Me3SnCl to yield Cp′TiCl2NHR (2) (2a: Cp′ = C5H5, R = tBu, 2b: Cp′ = Me3SiC5H4, R = tBu, 2c: Cp′ = (Me3Si)2C5H3, R = tBu, 2d: Cp′ = Me4C5H, R = tBu, 2e: Cp′ = Me5C5, R = tBu, 2f: Cp′ = C5H5, R = CHiPr2, 2g: Cp′ = Me3SiC5H4, R = CHiPr2, 2h: Cp′ = (Me3Si)2C5H3, R = CHiPr2, 2i: Cp′ = Me4C5H, R = CHiPr2, 2j: Cp′ = Me5C5, R = CHiPr2). Compounds 2a-2j are stable and eliminate HCl only in the presence of a strong base to form (C5H5TiClNt

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18

Lawal, Hadiza Abdulrahman, Adamu Uzairu, and Sani Uba. "QSAR, molecular docking, design, and pharmacokinetic analysis of 2-(4-fluorophenyl) imidazol-5-ones as anti-breast cancer drug compounds against MCF-7 cell line." Journal of Bioenergetics and Biomembranes 52, no. 6 (2020): 475–94. http://dx.doi.org/10.1007/s10863-020-09858-0.

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AbstractThe anti-proliferative activities of Novel series of 2-(4-fluorophenyl) imidazol-5-ones against MCF-7 breast cancer cell line were explored via in-slico studies which includes Quantitative structure–activity relationship QSAR, molecular docking studies, designing new compounds, and analyzing the pharmacokinetics properties of the designed compounds. From the QSAR analysis, model number one emerged the best as seen from the arithmetic assessments of (R2) = 0.6981, (R2adj) = 0.6433, (Q2) = 0.5460 and (R2pred) of 0.5357. Model number one was used in designing new derivative compounds, wit

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19

Mutha, V. V. S. R. N. Anji Karun, Chakravarthy Chandra, B. Vijayabhaskar, et al. "Separation of Unprecedented Degradants of Domperidone by Ultra-Performance Convergence Chromatography and Their Structure Elucidation." Journal of Chromatographic Science 57, no. 9 (2019): 806–14. http://dx.doi.org/10.1093/chromsci/bmz066.

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Abstract Domperidone, a gastroprokinetic agent, is a common drug to treat emesis. It was subjected to acid, base-mediated hydrolysis, peroxide-mediated oxidation, photolysis and thermal degradation according to ICH guidelines to observe stability of the selected drug under the stress conditions. Although the drug is resistant to base hydrolysis, photolysis and thermal stressors, two degradants (DP-ISO1 and DP-ISO2) were formed in acid mediated hydrolysis. Oxidation with hydrogen peroxide also resulted in one product (DP-OX). All three degradants were isolated from the crude reaction mixture by

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20

Cole, Jacqueline M., Michael C. W. Chan, Vernon C. Gibson, and Judith A. K. Howard. "Effects of the [OC6F5] moiety upon structural geometry: crystal structures of half-sandwich tantalum(V) aryloxide complexes from reaction of Cp*Ta(N t Bu)(CH2 R)2 with pentafluorophenol." Acta Crystallographica Section B Structural Science 67, no. 5 (2011): 416–24. http://dx.doi.org/10.1107/s0108768111029259.

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The synthesis, chemical and structural characterization of a series of pentamethylcyclopentadienyl (Cp*) tantalum imido complexes and aryloxide derivatives are presented. Specifically, the imido complexes Cp*Ta(N t Bu)(CH2 R)2, where R = Ph [dibenzyl(tert-butylamido) (η5-pentamethylcyclopentadienyl)tantalum(IV) (1)], Me2Ph [tert-butylamido)bis(2-methyl-2-phenylpropyl) (η5-pentamethylcyclopentadienyl)tantalum(IV) (2)], CMe3 [(tert-butylamido)bis(2,2-dimethylpropyl) (η5-pentamethylcyclopentadienyl)tantalum(IV) (3)], are reported. The crystal structure of (3) reveals α-agostic interactions with t

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21

Herrmann, Wolfgang A., Dieter W. Marz, and Eberhardt Herdtweck. "Mehrfachbindungen zwischen Hauptgruppenelementen und Übergangsmetallen, LXXXIX / Multiple Bonds between Main Group Elements and Transition Metals, LXXXIX." Zeitschrift für Naturforschung B 46, no. 6 (1991): 747–52. http://dx.doi.org/10.1515/znb-1991-0608.

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Reaction of (N-trimethylsilyl)-α-aminopicolin with the rhenium(V) oxohalogenide (η5-C5Me5)ReOCl2 (Me = CH3) exemplifies a simple, clean synthesis of imido-metallosiloxanes, compounds of the structure R3SiO—M=N—R′. The compound (η5-C5Me5)ReCl[OSi(CH3)3](NCH2-2-C5H4N) thus formed under HCl elimination has a square-pyramidal molecular structure (single crystal X-ray diffraction).

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22

Blade, Helen, Peter N. Horton, James A. Morrison, James B. Orton, Rachel A. Sullivan, and Simon J. Coles. "Tautomerism troubles: proton transfer modifies the stereochemical assignments in diastereoisomeric structures of spirocyclic 5-methyl-2H-imidazol-4-amine dimers." Acta Crystallographica Section E Crystallographic Communications 77, no. 12 (2021): 1311–15. http://dx.doi.org/10.1107/s205698902100668x.

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During the racemization of a novel pharmaceutical spirocyclic imidazole–amine compound, namely, 6′-bromo-N-(6′-bromo-4-methoxy-4′′-methyl-3′H-dispiro[cyclohexane-1,2′-indene-1′,2′′-imidazol]-5′′-yl)-4-methoxy-4′′-methyl-3′H-dispiro[cyclohexane-1,2′-indene-1′,2′′-imidazol]-5′′-imine, C36H41Br2N5O2, two impurities were isolated. These impurities were clearly dimers from mass spectroscopic analysis, however single-crystal diffraction characterization was required for the assignment of stereochemistry. The single-crystal diffraction results revealed subtly different structures to those proposed, d

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23

Howard-Lock, Helen E., Colin J. L. Lock, Sarah Penny, and Mary A. Turner. "Bis(imidazol-2-yl)phosphinic acid hemihydrate, [(C3H3N2)(C3H4N2)PO2].(1/2)H2O." Canadian Journal of Chemistry 67, no. 6 (1989): 1051–60. http://dx.doi.org/10.1139/v89-159.

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The title compound was obtained as the major product of our handling of the literature preparation of tris(imidazol-2-yl)phosphine. The compound was characterized by 1H NMR, mass and vibrational spectroscopy. The structure was determined by single crystal X-ray diffraction. Crystals were triclinic, [Formula: see text], a = 7.677(1), b = 12.658(2), c = 10.072(2) Å, α = 91.18(1),β = 114.44(1),γ = 99.49(1)°, Z = 4. Intensities were measured on a Syntex P21 diffractometer with MoKα radiation and 3088 reflections were used to determine the structure. R = 0.0698, Rw = 0.0534. The phosphinic acid exi

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24

Kolybalov, Dmitry S., Evgenii D. Kadtsyn, and Sergey G. Arkhipov. "Computer Aided Structure-Based Drug Design of Novel SARS-CoV-2 Main Protease Inhibitors: Molecular Docking and Molecular Dynamics Study." Computation 12, no. 1 (2024): 18. http://dx.doi.org/10.3390/computation12010018.

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Severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) virus syndrome caused the recent outbreak of COVID-19 disease, the most significant challenge to public health for decades. Despite the successful development of vaccines and promising therapies, the development of novel drugs is still in the interests of scientific society. SARS-CoV-2 main protease Mpro is one of the key proteins for the lifecycle of the virus and is considered an intriguing target. We used a structure-based drug design approach as a part of the search of new inhibitors for SARS-CoV-2 Mpro and hence new potential dr

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25

Gao, Xuesong, and Fengcai Lu. "Structure/permeability relationships of polyamide-imides." Journal of Applied Polymer Science 54, no. 12 (1994): 1965–70. http://dx.doi.org/10.1002/app.1994.070541219.

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26

Abdullayev, Yu. "STRUCTURAL ANALYSIS OF 2-(2,4,5-TRIPHENYL-1H-IMIDAZOL-1-YL)ETHAN-1-OL." Chemical Problems 15, no. 4 (2017): 393–96. http://dx.doi.org/10.32737/2221-8688-2017-4-393-396.

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27

Glueck, David S., Jianxin Wu, Frederick J. Hollander, and Robert G. Bergman. "Monomeric (pentamethylcyclopentadienyl)iridium imido compounds: synthesis, structure, and reactivity." Journal of the American Chemical Society 113, no. 6 (1991): 2041–54. http://dx.doi.org/10.1021/ja00006a026.

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Ison, Elon A., Thomas M. Cameron, Khalil A. Abboud, and James M. Boncella. "Synthesis, Structure, and Dynamics of Molybdenum Imido Alkyne Complexes." Organometallics 23, no. 17 (2004): 4070–76. http://dx.doi.org/10.1021/om049942t.

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29

Hill, John E., Robert D. Profilet, Phillip E. Fanwick, and Ian P. Rothwell. "Synthesis, Structure, and Reactivity of Aryloxo(imido)titanium Complexes." Angewandte Chemie International Edition in English 29, no. 6 (1990): 664–65. http://dx.doi.org/10.1002/anie.199006641.

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30

Lu, Xin-Hua, and Kai-Long Zhong. "A new three-dimensional manganese(II) coordination polymer based on the 1,3,5-tris[(1H-imidazol-1-yl)methyl]benzene ligand." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 895–900. http://dx.doi.org/10.1107/s2053229616015965.

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The self-assembly of coordination polymers and the crystal engineering of metal–organic coordination frameworks have attracted great interest, but it is still a challenge to predict and control the compositions and structures of the complexes. Employing multidentate organic ligands and suitable metal ions to construct inorganic–organic hybrid materials through metal–ligand coordination and hydrogen-bonding interactions has become a major strategy. Recently, imidazole-containing multidentate ligands that contain an aromatic core have received much attention. A new three-dimensional MnIIcoordina

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31

Adams, Nico, Helen R. Bigmore, Timothy L. Blundell, et al. "New Titanium Imido Synthons: Syntheses and Supramolecular Structures." Inorganic Chemistry 44, no. 8 (2005): 2882–94. http://dx.doi.org/10.1021/ic050011z.

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32

Li, Shun-Li, Guang-Ju Ping, and Jian-Fang Ma. "Aquachloridotriphenyltin(IV)–2-[1-(4-pyridylmethyl)-1H-imidazol-2-yl]pyridine (1/1)." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (2007): m2830. http://dx.doi.org/10.1107/s1600536807052695.

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In the title compound, [Sn(C6H5)3Cl(H2O)]·C14H12N4, Ph3SnCl(H2O) and 2-[1-(4-pyridylmethyl)-1H-imidazol-2-yl]pyridine molecules cocrystallize in the same structure. Each Sn atom displays a distorted trigonal–bipyramidal geometry composed of three phenyl groups, one Cl− ion and one coordinated water molecule, which links, via hydrogen bonding, the Ph3SnCl(H2O) molecule to the cocrystallized 2-[1-(4-pyridylmethyl)-1H-imidazol-2-yl]pyridine molecule to generate an infinite chain structure.

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33

Vedekhina, T. S., M. V. Chudinov, and A. Yu Lukin. "Design and synthesis of 4-nitroimidazole derivatives with potential antitubercular activity." Fine Chemical Technologies 18, no. 3 (2023): 219–29. http://dx.doi.org/10.32362/2410-6593-2023-18-3-219-229.

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Objectives. To develop the procedures for synthesis of hybrid molecules with potential anti-tubercular activity containing heterocyclic cores of 4-nitroimidazole and 1,3,4-thiadiazole within the framework of a double-drug strategy and predict bioactivity of target structures and drug-likeness physicochemical parameters.Methods. Target compounds were prepared by classical organic synthesis methods. The structure of the obtained compounds was characterized by melting points, 1H and 13C nuclear magnetic resonance spectroscopy, and high-resolution mass spectrometry. The calculation of the physicoc

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34

Obenhuber, A. H., T. L. Gianetti, R. G. Bergman, and J. Arnold. "Regioselective [2+2] and [4+2] cycloaddition reactivity in an asymmetric niobium(bisimido) moiety towards unsaturated organic molecules." Chemical Communications 51, no. 7 (2015): 1278–81. http://dx.doi.org/10.1039/c4cc07851a.

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The asymmetric bis-imido structure and the lability of the diethyl ether linkage in complex 1 provide a niobium complex that undergoes regioselective [4+2] cycloaddition reactions with an α,β-unsaturated ketone and cycloaddition reactions that involve bond formation to the MAD ligand (MAD = monoazabutadiene).

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35

Daran, Jean-Claude, Nicolas Gimeno, Maryse Gouygou, and Jérôme Volkman. "A triangular palladium(II) supramolecular coordination complex based on 1,4-bis(1H-imidazol-1-yl)benzene and (2,2′-bipyridyl)palladium(II) nitrate: synthesis and crystal structure." Acta Crystallographica Section C Structural Chemistry 75, no. 5 (2019): 523–28. http://dx.doi.org/10.1107/s2053229619004212.

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The self-assembly of ditopic bis(1H-imidazol-1-yl)benzene ligands (L H) and the complex (2,2′-bipyridyl-κ2 N,N′)bis(nitrato-κO)palladium(II) affords the supramolecular coordination complex tris[μ-bis(1H-imidazol-1-yl)benzene-κ2 N 3:N 3′]-triangulo-tris[(2,2′-bipyridyl-κ2 N,N′)palladium(II)] hexakis(hexafluoridophosphate) acetonitrile heptasolvate, [Pd3(C10H8N2)3(C12H10N4)3](PF6)6·7CH3CN, 2. The structure of 2 was characterized in acetonitrile-d 3 by 1H/13C NMR spectroscopy and a DOSY experiment. The trimeric nature of supramolecular coordination complex 2 in solution was ascertained by cold sp

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36

Williams, Neil A., Mahboub Merzouk, and Peter B. Hitchcock. "Synthesis of Silver (I) Complexes of Iminoalkyl Functionalised -Heterocyclic Carbenes." International Journal of Inorganic Chemistry 2010 (June 10, 2010): 1–5. http://dx.doi.org/10.1155/2010/628639.

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A range of silver iminoalkyl imidazol-2-ylidene complexes have been isolated in good yield (50%–85%) and characterised by and NMR spectroscopy. A single crystal X-ray diffraction structure determination of 1--(benzylhydrylidene-amino)-ethyl-benzyl imidazol-2-ylidene silver bromide indicated monodentate coordination of the ligand.

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37

Żesławska, Ewa, Wojciech Nitek, and Jadwiga Handzlik. "Conformational study of (Z)-5-(4-chlorobenzylidene)-2-[4-(2-hydroxyethyl)piperazin-1-yl]-3H-imidazol-4(5H)-one in different environments: insight into the structural properties of bacterial efflux pump inhibitors." Acta Crystallographica Section C Structural Chemistry 73, no. 12 (2017): 1151–57. http://dx.doi.org/10.1107/s2053229617016461.

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The 2-amine derivatives of 5-arylidene-3H-imidazol-4(5H)-one are a new class of bacterial efflux pump inhibitors, the chemical compounds that are able to restore antibiotic efficacy against multidrug resistant bacteria. 5-Arylidene-3H-imidazol-4(5H)-ones with a piperazine ring at position 2 reverse the mechanisms of multidrug resistance (MDR) of the particularly dangerous Gram-negative bacteria E. coli by inhibition of the efflux pump AcrA/AcrB/TolC (a main multidrug resistance mechanism in Gram-negative bacteria, consisting of a membrane fusion protein, AcrA, a Resistant-Nodulation-Division p

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38

Beaumier, Evan P., Brennan S. Billow, Amrendra K. Singh, Shannon M. Biros, and Aaron L. Odom. "A complex with nitrogen single, double, and triple bonds to the same chromium atom: synthesis, structure, and reactivity." Chemical Science 7, no. 4 (2016): 2532–36. http://dx.doi.org/10.1039/c5sc04608d.

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A complex with single, double and triple bonds between nitrogen and the same metal center has been synthesized, [NCr(NPh)(NPr<sup>i</sup><sub>2</sub>)<sub>2</sub>]<sup>−</sup>. The complex shows differential activity, with some electrophiles attacking the imido and others the nitrido.

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39

De Candia, Ariel G., Matias Molnar, Leonardo D. Slep, and Ricardo Baggio. "Four NiIIcomplexes with the new cyclam–methylimidazole ligand 1-[(1-methyl-1H-imidazol-2-yl)methyl]-1,4,8,11-tetraazacyclotetradecane." Acta Crystallographica Section C Crystal Structure Communications 68, no. 5 (2012): m121—m126. http://dx.doi.org/10.1107/s0108270112014904.

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Although it has not proved possible to crystallize the newly prepared cyclam–methylimidazole ligand 1-[(1-methyl-1H-imidazol-2-yl)methyl]-1,4,8,11-tetraazacyclotetradecane (LIm1), thetransandcisisomers of an NiIIcomplex, namelytrans-aqua{1-[(1-methyl-1H-imidazol-2-yl)methyl]-1,4,8,11-tetraazacyclotetradecane}nickel(II) bis(perchlorate) monohydrate, [Ni(C15H30N6)(H2O)](ClO4)2·H2O, (1), andcis-aqua{1-[(1-methyl-1H-imidazol-2-yl)methyl]-1,4,8,11-tetraazacyclotetradecane}nickel(II) bis(perchlorate), [Ni(C15H30N6)(H2O)](ClO4)2, (2), have been prepared and structurally characterized. At different st

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40

Balewski, Łukasz, Franciszek Sączewski, Patrick J. Bednarski, et al. "Synthesis, Structure and Cytotoxicity Testing of Novel 7-(4,5-Dihydro-1H-imidazol-2-yl)-2-aryl-6,7-dihydro-2H-imidazo[2,1-c][1,2,4]triazol-3(5H)-Imine Derivatives." Molecules 25, no. 24 (2020): 5924. http://dx.doi.org/10.3390/molecules25245924.

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The appropriate 1-arylhydrazinecarbonitriles 1a–c are subjected to the reaction with 2-chloro-4,5-dihydro-1H-imidazole (2), yielding 7-(4,5-dihydro-1H-imidazol-2-yl)-2-aryl-6,7-dihydro-2H-imidazo[2,1-c][1,2,4]triazol-3(5H)-imines 3a–c, which are subsequently converted into the corresponding amides 4a–e, 8a–c, sulfonamides 5a–n, 9, ureas 6a–I, and thioureas 7a–d. The structures of the newly prepared derivatives 3a–c, 4a–e, 5a–n, 6a–i, 7a–d, 8a–c, and 9 are confirmed by IR, NMR spectroscopic data, as well as single-crystal X-ray analyses of 5e and 8c. The in vitro cytotoxic potency of these comp

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41

Liu, Yang, Yong-Lan Feng, and Wei-Wei Fu. "Synthesis, structure, thermostability and luminescence properties of ZnIIand CdIIcoordination polymers based on dimethysuccinate and flexible 1,4-bis(imidazol-1-ylmethyl)benzene ligands." Acta Crystallographica Section C Structural Chemistry 72, no. 9 (2016): 658–63. http://dx.doi.org/10.1107/s2053229616010603.

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The design and synthesis of functional coordination polymers is motivated not only by their structural beauty but also by their potential applications. ZnIIand CdIIcoordination polymers are promising candidates for producing photoactive materials because thesed10metal ions not only possess a variety of coordination numbers and geometries, but also exhibit luminescence properties when bound to functional ligands. It is difficult to predict the final structure of such polymers because the assembly process is influenced by many subtle factors. Bis(imidazol-1-yl)-substituted alkane/benzene molecul

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42

Huang, Qiu-Ying, Wei Liu, Yi Yang, and Xiang-Ru Meng. "A new one-dimensional ZnIIcoordination polymer based on 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole and benzene-1,2-dicarboxylate." Acta Crystallographica Section C Structural Chemistry 71, no. 11 (2015): 1017–21. http://dx.doi.org/10.1107/s205322961501966x.

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Multidentate N-heterocyclic compounds form a variety of metal complexes with many intriguing structures and interesting properties. The title coordination polymer,catena-poly[zinc(II)-bis{μ-2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole}-κ2N3:N3′;N3′:N3-zinc(II)-bis(μ-benzene-1,2-dicarboxylato)-κ2O1:O2;κ3O1,O1′:O2], [Zn2(C8H4O4)2(C11H10N4)2]n, has been synthesized by the reaction of Zn(NO3)2with 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole (imb) and benzene-1,2-dicarboxylic acid (H2bdic) under hydrothermal conditions. There are two crystallographically distinct imb ligands [imb(A) and imb(B)]

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43

Jüschke, Ralf, Gerald Henkel, and Peter Sartori. "Synthese und Struktur von Kalium-4,4-difluor-[1,3,2]dithiazetidinid-1,l,3,3-tetraoxid und Rubidium-4,4,5,5-tetrafluor-[1,3,2]dithiazolidinid-1,1,3,3-tetraoxid / Syntheses and Structure of Potassium-4,4-difluoro-[1,3,2]dithiazetidinide-1,1,3,3- tetraoxide and Rubidium-4,4,5,5-tetrafluoro-[ 1,3,2]dithiazolidinide-1,1,3,3-tetraoxide." Zeitschrift für Naturforschung B 52, no. 3 (1997): 359–66. http://dx.doi.org/10.1515/znb-1997-0311.

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Abstract Reactions of perfluoroalkane-1,n-bis(sulfonylfluorides) (n = 1-2) (1-2) with liquid ammonia in tetrahydrofuran (TH F) lead to the cyclic ammonium imides 3-4. These cyclic imides 3-4 can easily be transform ed to other salts using the corresponding hydroxides. X -ray structure analyses (T = 150 K) were perform ed for the potassium 4,4-difluoro-[1,3,2]dithiazetidinide-1,1,3,3-tetraoxide 5 and rubidium -4,4,5,5-tetrafluoro-[1,3,2]dithiazolidinide-1,1,3,3-tetraoxide 6. Cylic imides of the type 3, 5 have not been reported previously. Their formation and their nmr-data are discussed.

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44

Wan, Hui-Da, та Jian-Quan Hong. "Crystal structure of di-μ-iodido-bis{[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]lithium}". Acta Crystallographica Section E Crystallographic Communications 71, № 6 (2015): m137—m138. http://dx.doi.org/10.1107/s2056989015009822.

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In the title binuclear complex, [Li2(C27H36N2)2I2], the unique LiIcation is coordinated by two iodide anions and one ylidene C atom from a 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene ligand in a distorted trigonal–planar geometry. The two symmetry-related iodide anions bridge two LiIcations, forming an inversion dimer in which the Li2I2plane is nearly perpendicular to the imidazol-2-ylidene ring, with a dihedral angle of 85.5 (3)°. No hydrogen bonding is observed in the crystal.

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45

Zairov, Rustem, Alexey Dovzhenko, Natalia Terekhova, et al. "Phosphineoxide-Chelated Europium(III) Nanoparticles for Ceftriaxone Detection." Nanomaterials 13, no. 3 (2023): 438. http://dx.doi.org/10.3390/nano13030438.

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The present work demonstrates the optimization of the ligand structure in the series of bis(phosphine oxide) and β-ketophosphine oxide representatives for efficient coordination of Tb3+ and Eu3+ ions with the formation of the complexes exhibiting high Tb3+- and Eu3+-centered luminescence. The analysis of the stoichiometry and structure of the lanthanide complexes obtained using the XRD method reveals the great impact of the bridging group nature between two phosphine oxide moieties on the coordination mode of the ligands with Tb3+ and Eu3+ ions. The bridging imido-group facilitates the deproto

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46

Chen, Zhen, Yanwen Sun, Zi-an Liu, et al. "A three-dimensional ZnII coordination network based on 5,5′-methylenebis(2,4,6-trimethylisophthalic acid) and 2,7-bis(1H-imidazol-1-yl)fluorene: synthesis, structure and luminescence properties." Acta Crystallographica Section C Structural Chemistry 75, no. 1 (2019): 8–14. http://dx.doi.org/10.1107/s2053229618016285.

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In recent years, coordination polymers constructed from multidentate carboxylate ligands and N-containing ligands have attracted much attention since these ligands can adopt a rich variety of coordination modes which can lead to crystalline products with intriguing structures and interesting properties. A new coordination polymer, namely poly[[diaqua[μ-2,7-bis(1H-imidazol-1-yl)fluorene-κ2 N 3:N 3′][μ-5,5′-methylenebis(3-carboxy-2,4,6-trimethylbenzoato)-κ2 O 1:O 1′]zinc(II)] hemihydrate], {[Zn(C23H22O8)(C19H14N4)(H2O)2]·0.5H2O} n , 1, was prepared by the self-assembly of Zn(NO3)2·6H2O with 5,5′

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47

Shima, Takanori, Takako Yanagi, and Zhaomin Hou. "Rare-earth–iridium heterobimetallic complexes with bridging imido and silylmethyl ligands: synthesis, structure and reactivity." New Journal of Chemistry 39, no. 10 (2015): 7608–16. http://dx.doi.org/10.1039/c5nj00598a.

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The reaction of [(C<sub>5</sub>Me<sub>5</sub>)IrN<sup>t</sup>Bu] with [(C<sub>5</sub>Me<sub>4</sub>R)Ln(CH<sub>2</sub>SiMe<sub>3</sub>)<sub>2</sub>(THF)] (Ln = Lu, Sc; R = Me, SiMe<sub>3</sub>) afforded novel heterometallic rare earth–iridium imido complexes, which show unique structural features and reactivities.

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48

Mogilaiah, Kaleru, Kamreddy Rajendar Reddy, Gurram Rama Rao, and Bathula Sreenivasulu. "Synthesis of 2-methyl-3-(1-aryl-1H-tetrazol-5-yl)-1,8-naphthyridines." Collection of Czechoslovak Chemical Communications 53, no. 7 (1988): 1539–42. http://dx.doi.org/10.1135/cccc19881539.

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2-Methyl-3-(1-aryl-1H-tetrazol-5-yl)-1,8-naphthyridines III have been synthesized by the reaction of 2-methyl-N-aryl-1,8-naphthyridine-3-carboxyamides (I) with phosphorus pentachloride and azidolysis of the resulting imidoyl chlorides. Structures of these compounds have been established by means of their elemental analyses and spectral data.

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49

Martinez, Jorge L., Sean A. Lutz, Hao Yang, et al. "Structural and spectroscopic characterization of an Fe(VI) bis(imido) complex." Science 370, no. 6514 (2020): 356–59. http://dx.doi.org/10.1126/science.abd3054.

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High-valent iron species are key intermediates in oxidative biological processes, but hexavalent complexes apart from the ferrate ion are exceedingly rare. Here, we report the synthesis and structural and spectroscopic characterization of a stable Fe(VI) complex (3) prepared by facile one-electron oxidation of an Fe(V) bis(imido) (2). Single-crystal x-ray diffraction of 2 and 3 revealed four-coordinate Fe centers with an unusual “seesaw” geometry. 57Fe Mössbauer, x-ray photoelectron, x-ray absorption, and electron-nuclear double resonance (ENDOR) spectroscopies, supported by electronic structu

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50

Rajesekharan-Nair, Rajeev, Samuel T. Lutta, Alan R. Kennedy, John Reglinski, and Mark D. Spicer. "Soft scorpionate coordination at alkali metals." Acta Crystallographica Section C Structural Chemistry 70, no. 5 (2014): 421–27. http://dx.doi.org/10.1107/s2053229614005737.

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Reported here are the single-crystal X-ray structure analyses of bis-μ-methanol-κ4 O:O-bis{[hydrotris(3-phenyl-2-sulfanylidene-2,3-dihydro-1H-1,3-imidazol-1-yl)borato-κ3 H,S,S′](methanol-κO)sodium(I)}, [Na2(C27H22BN6S3)2(CH4O)4] (NaTmPh), bis-μ-methanol-κ4 O:O-bis{[hydrotris(3-isopropyl-2-sulfanylidene-2,3-dihydro-1H-1,3-imidazol-1-yl)borato-κ3 H,S,S′](methanol-κO)sodium(I)}–diethyl ether–methanol (1/0.3333/0.0833), [Na2(C18H28BN6S3)2(CH4O)4]·0.3333C4H10O·0.0833CH3OH (NaTmiPr), and a novel anhydrous form of sodium hydrotris(methylthioimidazolyl)borate, poly[[μ-hydrotris(3-methyl-2-sulfanyliden

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