Home Physical Sciences The crystal structure of 1-(acridin-9-yl)pyrrolidine-2,5-dione, C17H22N2O2
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The crystal structure of 1-(acridin-9-yl)pyrrolidine-2,5-dione, C17H22N2O2

  • Dan Zhou ORCID logo , Hong Ji Li , Yu Qian Kan and Wen Li EMAIL logo
Published/Copyright: July 18, 2025
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 240 Issue 5

Abstract

C17H22N2O2, orthorhombic, Pbcn, a = 15.4770(15) Å, b = 9.7581(9) Å, c = 8.8722(10) Å, V = 1339.9(2) Å3, Z = 4, R gt (F) = 0.0477, wR ref (F2) = 0.1057, T = 296(2) K. CCDC no.: 2442467.

The molecular structure is shown in the figure. Table 1 contains the crystallographic data and the list of the atoms including atomic coordinates and displacement parameters can be found in the cif-file attached to this article.

Table 1:

Data collection and handling.

Crystal: Colorless Block
Size: 0.22 × 0.20 × 0.18 mm
Wavelength:

μ:		 Mo Kα radiation (0.71073 Å)

0.09 mm−1
Diffractometer, scan mode:

θmax, completeness:		 Bruker APEX2, φ and ω scans

25.0°, 100 %
N(hkl)measured, N(hkl)unique, Rint: 10342, 1186, 0.064
Criterion for Iobs, N(hkl)gt: Iobs > 2σ(Iobs), 814
N(param)refined: 97
Programs: Bruker, 1 SHELX, 2 , 3 Olex2 4

1 Source of materials

First, 9-aminoacridine (0.194 g, 1 mmol) was dissolved in 15 mL of N,N-dimethylformamide (DMF). Subsequently, triethylamine (0.7 mL, 5 mmol), 4-dimethylaminopyridine (DMAP, 0.037 g, 0.3 mmol), and succinic anhydride (0.5 g, 5 mmol) were sequentially added to the solution. The reaction mixture was heated to 70 °C under stirring and maintained at this temperature for 5 h. After cooling to room temperature, the mixture was extracted with ethyl acetate and saturated brine, with the ethyl acetate layer being retained. The organic layer was then washed three times with saturated brine to remove residual DMF. The ethyl acetate was removed under reduced pressure to yield a brown solid, which was further purified by washing with ethanol to obtain the target product. The resulting solid was dissolved in 10 mL of diethyl ether, and colorless block-shaped crystals were obtained after allowing the ether to evaporate over 24 h.

2 Experimental details

The structure was solved by Direct Methods and refined with the SHELX 2 , 3 crystallographic software package. Hydrogen atoms were placed in their geometrically idealized positions and constrained to ride on their parent atoms. The crystal structure was visualized by OLEX2 software package.

3 Comment

9-Aminoacridine is a compound possessing anti-cholinesterase activity. 3 , 4 , 5 To further enhance its anti-cholinesterase activity, we designed and synthesized a series of compounds using 9-aminoacridine as the core structure, among which the title compound represents one derivative. Due to the existence of imine isomers in 9-aminoacridine, the acylation site of the title compound could not be unambiguously determined through nuclear magnetic resonance (NMR) analysis. 6 , 7 Single-crystal X-ray diffraction serves as an effective and straightforward method for structural elucidation of chemical compounds. 8 , 9 The title molecule is located on a special position and the asymmetric unit contain one half of a molecule (see the figure).

In the structural characterization of the single crystal, all geometric parameters of the title compound fall within normal ranges. Crystallographic analysis reveals that the dihedral angle formed between the acridine planar skeleton and the C8–C9–N2 plane is 74.9°. Numerous crystal structures of aminoacridine derivatives have been reported, 10 , 11 , 12 , 13 among which N-(acridin-9-yl)-4-chloro-N-(4-chlorobutanoyl)butanamide (CCDC no. 2325358) exhibits a similar chemical framework to the title compound. The critical distinction lies in their structural motifs: the title compound is a cyclic diimide derivative, whereas the reference compound adopts a linear diamide configuration. Specifically, their crystallographic differences manifest in the bond parameters of the C–N bonds formed by the aminoacridine moiety. The C7–N2 and C8–N2 bond lengths in the title compound measure 1.435 Å and 1.394 Å, respectively, compared to 1.448 Å and 1.415 Å in the reference compound. Furthermore, the C7–N2–N8 bond angle in the title compound is 123.7°, significantly larger than the 114.6° observed in the reference compound.

Corresponding author: Wen Li, School of Pharmaceutical Sciences, State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, E-mail:

Acknowledgments

The Analysis and Testing Center of Zhengzhou University is acknowledged for the single crystal X-ray diffraction facility.

  1. Author contributions: The synthesis of compounds and crystal preparation were completed by Dan Zhou, while the data analysis, writing and revision of the paper were completed by Dan Zhou, Hong Ji Li and Yu Qian Kan; supervision, Wen Li. All authors have read and agreed the published version of the manuscript.

  2. Conflict of interest: The authors declare no conflicts of interest regarding this article.

  3. Research funding: This work was supported by the Key Technologies R & D Program of Henan Province of China (No. 222102310279 for WL).

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Received: 2025-05-07
Accepted: 2025-06-19
Published Online: 2025-07-18
Published in Print: 2025-10-27

© 2025 the author(s), published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. Crystal structure of (S)-N-(10-((2,2-dimethoxyethyl)amino)-1,2,3-trimethoxy-9-oxo-5,6,7,9-tetrahydrobenzo[a]heptalen-7-yl)acetamide, C25H32N2O7
  4. The crystal structure of 6,6′-difluoro-3,3′-dimethyl-5,5′-di(10H-phenoxazin-10-yl)- [1,1′-biphenyl]-2,2′-dicarbonitrile, C40H24F2N4O2
  5. Crystal structure of poly[(di-ethylenediamine-κ2N,N′)cadmium(II) tetradedocyloxidohexavanadate] (V4+/V5+ = 2/1), C4H16CdN4O14V6
  6. The crystal structure of poly[bis(dimethylformamide-κ1N)-(μ4-2′,3,3″,5′-tetrakis(trifluoromethyl)-[1,1′:4′,1″-terphenyl]-4,4″-dicarboxylato-κ4 O,O′: O″,O‴)dicadmium(II)], C27H15CdF12NO5
  7. Crystal structure of bis(μ2-ferrocenylcarboxylato-O,O′)-(μ3-oxido-κ3O:O:O)-bis(μ2-salicyladoximato-κ2N,O,O′)-(μ2-isopropoxo)-tris(isopropoxy-κ1O trititanium(IV)), C48H55N2O13Fe2Ti3
  8. Crystal structure of 3-(diethylamino)-7,9,11-trimethyl-8-phenyl-6H,13H-12λ4,13λ4-chromeno[3′,4′:4,5]pyrrolo[1,2-c]pyrrolo[2,1-f][1,3,2]diazaborinin-6-one, C28H26BF2N3O2
  9. The crystal structure of catena-poly[aqua-μ2-2-nitro-benzene-1,3-dicarboxylato-κ2O,O′)-(1,10-phenanthroline-κ2N,N′)-zinc(II)], C20H13N3O7Zn
  10. Crystal structure of poly[diaqua-{μ3-1-(3-carboxylatophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylato-κ4O,O′:O′′:O′′′′}manganese(II)] hydrate
  11. Crystal structure of N′-((1-hydroxycyclohexyl)(phenyl)methyl)-2-methoxybenzohydrazide methanol solvate, C22H28N2O4
  12. The cocrystal of caffeic acid — progesterone — water (1/2/1), C51H70O9
  13. Crystal structure of (((oxido(quinolin-6-yl)methoxy)triphenyl-λ5-stibanyl)oxy)(quinolin-7-yl)methanolate
  14. Crystal structure of [(E)-6′-(diethylamino)-2-(2-(((E)-pyren-1-ylmethylene)amino)ethyl)-4′-(2-((E)-1,3,3-trimethylindolin-2-ylidene)ethylidene)-1′,2′,3′,4′-tetrahydrospiro[isoindoline-1,9′-xanthen]-3-one]-methanol, solvate C57H56N4O3
  15. The crystal structure of 1-(acridin-9-yl)pyrrolidine-2,5-dione, C17H22N2O2
  16. Crystal structure of N-(4-acetylphenyl)-2-(6-methoxynaphthalen-2-yl)propanamide, C22H21NO3
  17. The crystal structure of 5,10,15,20-tetrakis(4-(1H-1,2,4-triazol-1-yl)phenyl)porphyrin, C52H34N16
  18. Crystal structure of hexacarbonyl-μ2-[phenylmethanedithiolato-κ4S:S,S′:S′]diiron (Fe–Fe) C13H6Fe2O6S2
  19. Crystal structure of diiodo-bis(1-((2-propyl-1H-benzo[d]imidazol-1-yl)methyl)-1H-benzo[d][1,2,3]triazole-κ1N)cadmium(II), C34H34CdI2N10
  20. Crystal structure of (E)-(3-(3-bromophenyl)acryloyl)ferrocene, C19H15BrFeO
  21. Crystal structure of catena-poly(μ2-6-chloropyridine-2-carboxylato-κ3N,O:O′)(6-chloropyridine-2-carboxylato-κ2O,N)copper(II), C12H6Cl2N2O4Cu
  22. Crystal structure of poly[diaqua-μ 3-(5-(3,5-dicarboxy-2,4,6-trimethylbenzyl)-2,4,6-trimethylisophthalato)-κ 6O,O′:O″,O‴:O‴′,O‴″) terbium(III)-monohydrate], C23H28TbO12
  23. Crystal structure of (E)-2-(((5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)methylene)amino)-3′,6′-dihydroxyspiro[isoindoline-1,9′-xanthen]-3-one – ethanol (1/2), C35H33ClN4O6
  24. The crystal structure of 3-(5-amino-3-phenylisoxazol-4-yl)-4-chloro-3-hydroxyindolin-2-one, C17H12ClN3O3
  25. The crystal structure of dimethylammonium 4-[2-(4-fluorophenyl)-4, 5-diphenyl-1H-imidazol-1-yl]benzenesulfonate, C29H26FN3O3S
  26. Crystal structure of (R)-2-ammonio-3-((5-carboxypentyl)thio)propanoate
  27. Crystal structure of 4-cyclohexyl-5-(thiophen-2-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione, C12H15N3S2
  28. The crystal structure of 4,6-bis(dimethylamino)-2-fluoroisophthalonitrile, C12H13FN4
  29. Hydrogen bonding in the crystal structure of nicotin-1,1′-dium tetrabromidomanganate(II)
  30. The crystal structure of bis(2-bromobenzyl)(2-((2-oxybenzylidene)amino)-4-methylpentanoato-κ3N, O,O′)tin(IV), C27H27Br2NO3Sn
  31. Crystal structure of (E)-(3-(p-tolyl)acryloyl)ferrocene, C20H18FeO
  32. Crystal structure of (E)-7-fluoro-2-((5-(4-methylpiperazin-1-yl)pyridin-2-yl)methylene)-3,4-dihydronaphthalen-1(2H)-one, C21H22FN3O
  33. Crystal structure of (E)-7-methoxy-2-((5-(4-methylpiperazin-1-yl)pyridin-2-yl)methylene)-3,4-dihydronaphthalen-1(2H)-one, C22H25N3O2
  34. The crystal structure of poly(bis(μ2-1,3,5-tri(1H-imidazol-1-yl)benzene-κ2N:N′)-(μ2-2,3,5,6-tetrafluoroterephthalato-κ2O:O′)-manganese(II), C38H24F4N12O4Mn
  35. Crystal structure of (3,4-dimethoxybenzyl)triphenylphosphonium bromide ethanol solvate, C29H32BrO3P
  36. Crystal structure of tetraethylammonium hydrogencarbonate – (diaminomethylene)thiourea – water (2/1/3)
  37. Crystal structure of N, N-Dimethyl-N′-tosylformimidamide, C10H14N2O2S
  38. The crystal structure of ethyl 2-methyl-5-oxo-4-(2-methoxyphenyl)-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C20H23N2O4
  39. Crystal structure of bis(μ2-1,5-bis[(E)-1-(2-hydroxyphenyl)ethylidene] thiocarbonohydrazide)-bis(dimethylformamide)-dizinc(II) dimethylformamide solvate, C40H46N10O6S2Zn2⋅C3H7NO
  40. Crystal structure of azido-κ1N{hydridotris(3-tert-butyl-5-methylpyrazol-1-yl)borato-κ3N,N′,N″}copper(II), C24H40BCuN9
  41. The crystal structure of fac-tricarbonyl(1,10-phenanthroline-κ2N,N′)-(azido-κ1N)rhenium(I), C15H8N5O3Re
  42. Crystal structure of 4-((triphenylphosphonio)methyl)pyridin-1-ium tetrachloridozincate(II), C24H22Cl4NPZn
https://doi.org/10.1515/ncrs-2025-0225
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Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. Crystal structure of (S)-N-(10-((2,2-dimethoxyethyl)amino)-1,2,3-trimethoxy-9-oxo-5,6,7,9-tetrahydrobenzo[a]heptalen-7-yl)acetamide, C25H32N2O7
  4. The crystal structure of 6,6′-difluoro-3,3′-dimethyl-5,5′-di(10H-phenoxazin-10-yl)- [1,1′-biphenyl]-2,2′-dicarbonitrile, C40H24F2N4O2
  5. Crystal structure of poly[(di-ethylenediamine-κ2N,N′)cadmium(II) tetradedocyloxidohexavanadate] (V4+/V5+ = 2/1), C4H16CdN4O14V6
  6. The crystal structure of poly[bis(dimethylformamide-κ1N)-(μ4-2′,3,3″,5′-tetrakis(trifluoromethyl)-[1,1′:4′,1″-terphenyl]-4,4″-dicarboxylato-κ4 O,O′: O″,O‴)dicadmium(II)], C27H15CdF12NO5
  7. Crystal structure of bis(μ2-ferrocenylcarboxylato-O,O′)-(μ3-oxido-κ3O:O:O)-bis(μ2-salicyladoximato-κ2N,O,O′)-(μ2-isopropoxo)-tris(isopropoxy-κ1O trititanium(IV)), C48H55N2O13Fe2Ti3
  8. Crystal structure of 3-(diethylamino)-7,9,11-trimethyl-8-phenyl-6H,13H-12λ4,13λ4-chromeno[3′,4′:4,5]pyrrolo[1,2-c]pyrrolo[2,1-f][1,3,2]diazaborinin-6-one, C28H26BF2N3O2
  9. The crystal structure of catena-poly[aqua-μ2-2-nitro-benzene-1,3-dicarboxylato-κ2O,O′)-(1,10-phenanthroline-κ2N,N′)-zinc(II)], C20H13N3O7Zn
  10. Crystal structure of poly[diaqua-{μ3-1-(3-carboxylatophenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylato-κ4O,O′:O′′:O′′′′}manganese(II)] hydrate
  11. Crystal structure of N′-((1-hydroxycyclohexyl)(phenyl)methyl)-2-methoxybenzohydrazide methanol solvate, C22H28N2O4
  12. The cocrystal of caffeic acid — progesterone — water (1/2/1), C51H70O9
  13. Crystal structure of (((oxido(quinolin-6-yl)methoxy)triphenyl-λ5-stibanyl)oxy)(quinolin-7-yl)methanolate
  14. Crystal structure of [(E)-6′-(diethylamino)-2-(2-(((E)-pyren-1-ylmethylene)amino)ethyl)-4′-(2-((E)-1,3,3-trimethylindolin-2-ylidene)ethylidene)-1′,2′,3′,4′-tetrahydrospiro[isoindoline-1,9′-xanthen]-3-one]-methanol, solvate C57H56N4O3
  15. The crystal structure of 1-(acridin-9-yl)pyrrolidine-2,5-dione, C17H22N2O2
  16. Crystal structure of N-(4-acetylphenyl)-2-(6-methoxynaphthalen-2-yl)propanamide, C22H21NO3
  17. The crystal structure of 5,10,15,20-tetrakis(4-(1H-1,2,4-triazol-1-yl)phenyl)porphyrin, C52H34N16
  18. Crystal structure of hexacarbonyl-μ2-[phenylmethanedithiolato-κ4S:S,S′:S′]diiron (Fe–Fe) C13H6Fe2O6S2
  19. Crystal structure of diiodo-bis(1-((2-propyl-1H-benzo[d]imidazol-1-yl)methyl)-1H-benzo[d][1,2,3]triazole-κ1N)cadmium(II), C34H34CdI2N10
  20. Crystal structure of (E)-(3-(3-bromophenyl)acryloyl)ferrocene, C19H15BrFeO
  21. Crystal structure of catena-poly(μ2-6-chloropyridine-2-carboxylato-κ3N,O:O′)(6-chloropyridine-2-carboxylato-κ2O,N)copper(II), C12H6Cl2N2O4Cu
  22. Crystal structure of poly[diaqua-μ 3-(5-(3,5-dicarboxy-2,4,6-trimethylbenzyl)-2,4,6-trimethylisophthalato)-κ 6O,O′:O″,O‴:O‴′,O‴″) terbium(III)-monohydrate], C23H28TbO12
  23. Crystal structure of (E)-2-(((5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)methylene)amino)-3′,6′-dihydroxyspiro[isoindoline-1,9′-xanthen]-3-one – ethanol (1/2), C35H33ClN4O6
  24. The crystal structure of 3-(5-amino-3-phenylisoxazol-4-yl)-4-chloro-3-hydroxyindolin-2-one, C17H12ClN3O3
  25. The crystal structure of dimethylammonium 4-[2-(4-fluorophenyl)-4, 5-diphenyl-1H-imidazol-1-yl]benzenesulfonate, C29H26FN3O3S
  26. Crystal structure of (R)-2-ammonio-3-((5-carboxypentyl)thio)propanoate
  27. Crystal structure of 4-cyclohexyl-5-(thiophen-2-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione, C12H15N3S2
  28. The crystal structure of 4,6-bis(dimethylamino)-2-fluoroisophthalonitrile, C12H13FN4
  29. Hydrogen bonding in the crystal structure of nicotin-1,1′-dium tetrabromidomanganate(II)
  30. The crystal structure of bis(2-bromobenzyl)(2-((2-oxybenzylidene)amino)-4-methylpentanoato-κ3N, O,O′)tin(IV), C27H27Br2NO3Sn
  31. Crystal structure of (E)-(3-(p-tolyl)acryloyl)ferrocene, C20H18FeO
  32. Crystal structure of (E)-7-fluoro-2-((5-(4-methylpiperazin-1-yl)pyridin-2-yl)methylene)-3,4-dihydronaphthalen-1(2H)-one, C21H22FN3O
  33. Crystal structure of (E)-7-methoxy-2-((5-(4-methylpiperazin-1-yl)pyridin-2-yl)methylene)-3,4-dihydronaphthalen-1(2H)-one, C22H25N3O2
  34. The crystal structure of poly(bis(μ2-1,3,5-tri(1H-imidazol-1-yl)benzene-κ2N:N′)-(μ2-2,3,5,6-tetrafluoroterephthalato-κ2O:O′)-manganese(II), C38H24F4N12O4Mn
  35. Crystal structure of (3,4-dimethoxybenzyl)triphenylphosphonium bromide ethanol solvate, C29H32BrO3P
  36. Crystal structure of tetraethylammonium hydrogencarbonate – (diaminomethylene)thiourea – water (2/1/3)
  37. Crystal structure of N, N-Dimethyl-N′-tosylformimidamide, C10H14N2O2S
  38. The crystal structure of ethyl 2-methyl-5-oxo-4-(2-methoxyphenyl)-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C20H23N2O4
  39. Crystal structure of bis(μ2-1,5-bis[(E)-1-(2-hydroxyphenyl)ethylidene] thiocarbonohydrazide)-bis(dimethylformamide)-dizinc(II) dimethylformamide solvate, C40H46N10O6S2Zn2⋅C3H7NO
  40. Crystal structure of azido-κ1N{hydridotris(3-tert-butyl-5-methylpyrazol-1-yl)borato-κ3N,N′,N″}copper(II), C24H40BCuN9
  41. The crystal structure of fac-tricarbonyl(1,10-phenanthroline-κ2N,N′)-(azido-κ1N)rhenium(I), C15H8N5O3Re
  42. Crystal structure of 4-((triphenylphosphonio)methyl)pyridin-1-ium tetrachloridozincate(II), C24H22Cl4NPZn
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