Home The crystal structure of 1,2-bis(4-(dimethylamino)phenyl)ethane-1,2-dione. C18H20N2O2
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The crystal structure of 1,2-bis(4-(dimethylamino)phenyl)ethane-1,2-dione. C18H20N2O2

  • Du Yuchang ORCID logo EMAIL logo , He Jiarui , Li Yan , Zeng Guimei and Liu Wenhua
Published/Copyright: October 1, 2024
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 239 Issue 6

Abstract

C18H20N2O2, triclinic, P1̄ (no. 2), a = 9.9301(5) Å, b = 10.6446(5) Å, c = 15.2690(8) Å, α = 77.743(2)°, β = 87.460(2)°, γ = 89.139(2)°, V = 1575.60(14) Å3, Z = 4, R gt (F) = 0.0465, wR ref (F 2) = 0.1188, T = 150 K.

CCDC no.: 2384589

A part of the molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal: Yellow block
Size: 0.15 × 0.12 × 0.11 mm
Wavelength:

μ:		 Cu Kα radiation (1.54178 Å)

0.66 mm−1
Diffractometer, scan mode:

θ max, completeness:		 Bruker,

68.4°, 99 %
N(hkl)measured, N(hkl)unique, R int: 30,030, 5722, 0.041
Criterion for I obs, N(hkl)gt: I obs > 2σ(I obs), 5146
N(param)refined: 405
Programs: Olex2, 1 SHELX 2 , 3
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

Atom x y z U iso*/U eq
O1 1.23894 (12) 0.78017 (13) 0.68555 (8) 0.0455 (3)
O2 1.13676 (12) 0.53098 (11) 0.81983 (8) 0.0378 (3)
N1 0.82578 (15) 0.61685 (13) 0.42010 (9) 0.0366 (3)
N2 0.83089 (14) 0.91823 (14) 1.02825 (9) 0.0364 (3)
C1 1.05585 (14) 0.68721 (14) 0.62821 (10) 0.0257 (3)
C2 1.08659 (15) 0.74582 (14) 0.53854 (11) 0.0292 (3)
H2 1.162068 0.801407 0.524804 0.035*
C3 1.01085 (16) 0.72522 (15) 0.47009 (10) 0.0311 (3)
H3 1.034048 0.767286 0.410116 0.037*
C4 0.89825 (15) 0.64186 (14) 0.48770 (10) 0.0283 (3)
C5 0.86580 (15) 0.58495 (14) 0.57858 (10) 0.0281 (3)
H5 0.789520 0.530499 0.593051 0.034*
C6 0.94294 (14) 0.60729 (14) 0.64611 (10) 0.0261 (3)
H6 0.919061 0.567511 0.706455 0.031*
C7 1.13906 (15) 0.71170 (15) 0.69876 (11) 0.0299 (3)
C8 1.10577 (14) 0.64524 (14) 0.79635 (11) 0.0283 (3)
C9 1.04526 (14) 0.72190 (14) 0.85620 (10) 0.0259 (3)
C10 0.99421 (15) 0.84651 (14) 0.82431 (10) 0.0263 (3)
H10 1.007460 0.885635 0.762602 0.032*
C11 0.92575 (15) 0.91271 (14) 0.88037 (10) 0.0277 (3)
H11 0.891642 0.996366 0.856863 0.033*
C12 0.90528 (15) 0.85770 (15) 0.97304 (10) 0.0279 (3)
C13 0.96391 (15) 0.73503 (15) 1.00579 (10) 0.0293 (3)
H13 0.957029 0.697806 1.068120 0.035*
C14 1.03008 (14) 0.67011 (14) 0.94847 (10) 0.0272 (3)
H14 1.066853 0.587502 0.971818 0.033*
C15 0.8113 (2) 0.8599 (2) 1.12282 (12) 0.0466 (5)
H15A 0.768948 0.775654 1.129384 0.070*
H15B 0.752894 0.915351 1.151957 0.070*
H15C 0.898666 0.849356 1.150966 0.070*
C16 0.7570 (2) 1.03634 (18) 0.99356 (13) 0.0454 (4)
H16A 0.820900 1.105342 0.968744 0.068*
H16B 0.701725 1.060398 1.042274 0.068*
H16C 0.698649 1.022699 0.946350 0.068*
C17 0.8564 (2) 0.68052 (18) 0.32760 (12) 0.0444 (4)
H17A 0.830981 0.771508 0.318866 0.067*
H17B 0.805708 0.639827 0.287595 0.067*
H17C 0.953195 0.673190 0.313923 0.067*
C18 0.70707 (18) 0.53593 (17) 0.43806 (13) 0.0418 (4)
H18A 0.731355 0.451534 0.473840 0.063*
H18B 0.671490 0.525446 0.381203 0.063*
H18C 0.638236 0.576177 0.471258 0.063*
O3 0.79844 (11) 0.17197 (11) 0.74342 (8) 0.0392 (3)
O4 0.52753 (13) 0.03587 (11) 0.81602 (8) 0.0415 (3)
N3 0.35184 (13) 0.15516 (13) 0.40725 (9) 0.0333 (3)
N4 0.53808 (14) 0.63604 (13) 0.90466 (10) 0.0350 (3)
C19 0.40304 (15) 0.14698 (14) 0.48922 (10) 0.0276 (3)
C20 0.51740 (16) 0.21841 (15) 0.50091 (10) 0.0299 (3)
H20 0.559755 0.273459 0.450372 0.036*
C21 0.56813 (15) 0.20930 (14) 0.58439 (10) 0.0287 (3)
H21 0.643536 0.260126 0.590568 0.034*
C22 0.51133 (15) 0.12686 (14) 0.66060 (10) 0.0266 (3)
C23 0.34462 (16) 0.06484 (14) 0.56680 (10) 0.0289 (3)
H23 0.267089 0.016180 0.561565 0.035*
C24 0.39855 (16) 0.05486 (14) 0.64904 (10) 0.0281 (3)
H24 0.358647 −0.002221 0.699566 0.034*
C25 0.56669 (16) 0.11399 (14) 0.74874 (10) 0.0300 (3)
C26 0.68209 (15) 0.20315 (15) 0.76078 (10) 0.0294 (3)
C27 0.64576 (15) 0.31497 (14) 0.79775 (10) 0.0263 (3)
C28 0.74333 (15) 0.38696 (15) 0.82865 (10) 0.0289 (3)
H28 0.835446 0.362410 0.825047 0.035*
C29 0.70920 (15) 0.49209 (15) 0.86399 (10) 0.0292 (3)
H29 0.777804 0.538060 0.885003 0.035*
C30 0.57329 (15) 0.53297 (14) 0.86958 (10) 0.0264 (3)
C31 0.47490 (15) 0.46142 (14) 0.83694 (10) 0.0279 (3)
H31 0.382894 0.486925 0.838567 0.033*
C32 0.51113 (15) 0.35578 (14) 0.80303 (10) 0.0275 (3)
H32 0.442994 0.308762 0.782479 0.033*
C33 0.39906 (18) 0.68030 (18) 0.90801 (14) 0.0425 (4)
H33A 0.373398 0.722801 0.847612 0.064*
H33B 0.390178 0.741261 0.947868 0.064*
H33C 0.339923 0.606659 0.930819 0.064*
C34 0.63866 (19) 0.71408 (18) 0.93383 (13) 0.0443 (4)
H34A 0.688265 0.661171 0.982591 0.067*
H34B 0.594076 0.785391 0.955158 0.067*
H34C 0.701534 0.748360 0.883417 0.067*
C35 0.41232 (19) 0.23843 (19) 0.32758 (11) 0.0439 (4)
H35A 0.401954 0.328365 0.332598 0.066*
H35B 0.367340 0.225435 0.274370 0.066*
H35C 0.508362 0.217546 0.322140 0.066*
C36 0.23161 (17) 0.08491 (17) 0.39588 (12) 0.0368 (4)
H36A 0.248203 −0.007577 0.415473 0.055*
H36B 0.209345 0.104323 0.332515 0.055*
H36C 0.156266 0.110661 0.431994 0.055*

1 Source of material

1,2-bis(4-(dimethylamino)phenyl)ethane-1,2-dione was synthesized according to the classical procedure. 1 The crystal for X-ray data collection was obtained by recrystallization from N, N-dimethylformamide.

2 Experimental details

Using Olex2, the structure was solved with the SHELXS structure solution program using Direct Methods and refined with the SHELXL refinement package. The C-bound H atoms were geometrically placed (C–H = 0.95–0.98 Å) and refined as riding with Uiso(H) = 1.2–1.5 Ueq(C). 2 , 3 , 4

3 Comment

Benzil is one of the important building blocks, with two adjacent carbonyl groups, which can be easily transformed into various heterocycles. These heterocycles and benzil derivatives are widely used in pharmaceuticals, polymer, and material chemistry. Such as biologically active compounds, 5 fluorescence probes, 6 dyes, 7 sensitizers in organic photovoltaics, 8 as well as organic nonlinear optical materials. 9 Benzils can be obtained through several synthetic methods, for instance, Friedel–Crafts acylation, 10 oxidation of benzoins, 11 oxidation of diarylalkenes, 12 oxidation of diarylalkynes, 13 etc. In benzils, some crystal structures of alkoxy group, halogenated or nitro group substitution on phenyl ring have been reported. 9 , 14 , 15

The crystal structure of 1,2-bis(4-(dimethylamino)phenyl) ethane-1,2-dione displays approximate bond lengths and angles compared to the similar structure. 8 The torsion angle of O(1)–C(7)–C(8)–O(2) is −101.53(18)∘ indicating that there is no conjugated π-bond between the two carbonyl groups. The torsion angle of C(2)–C(1)–C(7)–O(1) is −1.4(2)∘, exhibiting the carbonyl almost coplanar with the associated aromatic ring. The torsion angles of O(2)–C(8)–C(9)–C(14) and C(1)–C(7)–C(8)–C(9) are 5.9(2)∘ and −106.40(16)∘, respectively. The dimethylamino segments are approximately coplanar with the corresponding associated aromatic rings due to the p-π conjugation.

Corresponding author: Du Yuchang, College of Chemistry and Bioengineering, Yichun University, Yichun 336000, Jiangxi, P.R. China, E-mail:

Acknowledgments

This work was supported by the National Natural Science Foundation of China (22172069), the Undergraduate Training Program for Innovative and Entrepreneurship in University (Grant No. 202310417006) and Research Start–Up Funding in University.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

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

  3. Research funding: National Natural Science Foundation of China (22172069), the Undergraduate Training Program for Innovative and Entrepreneurship in University (Grant No. 202310417006) and Research Start–Up Funding in University.

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Received: 2024-07-26
Accepted: 2024-09-17
Published Online: 2024-10-01
Published in Print: 2024-12-17

© 2024 the author(s), published by De Gruyter, Berlin/Boston

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

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  57. Crystal structure of dicarbonyl (μ2-indole-2-carboxylato κ2 O:O′)tris(triphenylarsine-κAs)dirhodium(I) acetone solvate, C68H56As3NO5Rh2
  58. The crystal structure of 4-chloro-2-formylphenyl 4-methylbenzenesulfonate, C14H11ClO4S
  59. Crystal structure of 4-iodobenzyl 2-(6-methoxynaphthalen-2-yl) propanoate, C21H19IO3
https://doi.org/10.1515/ncrs-2024-0317
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Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. Crystal structure of 3-nitrophenol-2,1,3-benzoselenadiazole (1/1), C12H9N3O3Se
  4. Crystal structure of diaqua-(hydroxido)-{μ-[2-(hydroxy)-5-[(4-nitrophenyl)diazenyl]benzoato]}-{2-hydroxy-5-[(4-nitrophenyl)diazenyl]benzoato}-(1,10-phenanthroline)-diterbium hydrate, C38H27.4N8O12.2Tb
  5. Crystal structure of poly[bis(μ3-3-fluoro-4-(1H-1,2,4-triazol-1-yl)benzoato-κ3 O:O′:N)cadmium(II)] – dimethylformamide (1/1), C21H17CdF2N7O5
  6. The crystal structure of 2-amino-N-(pyridin-2-yl)benzamide, C12H11N3O
  7. The crystal structure of 2,3-di(pyridin-2-yl)-2,3-dihydroquinazolin-4(1H)-one, C18H14N4O
  8. Crystal structure of 2-chloro-4-fluorobenzyl (R)-2-(6-methoxynaphthalen-2-yl)propanoate, C21H18ClFO3
  9. Crystal structure of [1-(4-carboxyphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid]-(methylsulfinyl)methane, C15H16N2O6S
  10. The crystal structure of 2-ethyl-1,1-dimethyl-1H-benzo[e]indole, C16H17N
  11. The crystal structure of (Z)-5-amino-N ′-hydroxy-1H-pyrazole-4-carboximidamide, C4H7N5O
  12. The crystal structure of 2,2,5-trimethyl-3-(4-(4-(5-phenyl-4,5-dihydroisoxazol-3-yl)thiazol-2-yl)phenyl)imidazolidin-4-one, C24H24N4O2S
  13. The crystal structure of tetrakis(μ2-acetato-κ2 O:O′)-bis[(4′-phenyl-4,2′:6′,4″-terpyridine-κ1 N)dicopper(II)], C25H21CuN3O4
  14. Crystal structure of poly(3-thiophenecarboxylato-κ 3 O,O′:O′)-(methanol-κO)cadmium(II), C11H10O5S2Cd
  15. The crystal structure of dichloridobis[4′-(p-methoxylphenyl)-4,2′:6′,4″-terpyridine-κN] zinc(II), C44H34Cl2N6O2Zn
  16. The crystal structure of 1-(2-carboxyethyl)-1H-imidazole 3-oxide
  17. Crystal structure of 1,1′,1″-(nitrilotris(ethane-2,1-diyl))tris(3-(4-(((E)-pyridin-2-ylmethylene)amino)phenyl)urea), C45H47N13O4
  18. Crystal structure of a (E)-4-bromo-N-(4-(diethylamino)-2-hydroxybenzylidene) benzenaminium acetate ─ 4-bromoaniline (1/1)
  19. Crystal structure of 2,2′-(iminobis(methylene))bis(benzimidazolium) bis(p-toluenesulfonate), C30H31N5O6S2
  20. The crystal structure of alogliptinium meta-chlorobenzoate
  21. Crystal structure of 4-bromobenzyl 2-(6-methoxy-naphthalen-2-yl)propanoate, C21H19BrO3
  22. The hydrated double salt structure of (E)-4-(2-benzylidenehydrazine-1-carbonyl)pyridin-1-ium cation with 2-hydroxybenzoate and benzoate anions
  23. Crystal structure of (R)(R)-5-chloro-3-((S,1E,3E)-3,5-dimethyl-hepta-1,3-dien-1-yl)-7-methyl-6,8-dioxo-2,6,7,8-tetrahydroisoquinolin-7-yl acetate, C21H24ClNO4
  24. The crystal structure of bis(3-oxo-1,3-diphenylprop-1-en-1-olato-κ 2 O:O′)-bis(1,4-dioxane-κ 1 O)nickel(II), C38H38O8Ni
  25. Crystal structure of poly[aqua-(pyridine-3-carboxylato-κ1 N)(pyridine-3-carboxylato-κ2 O,O′) cadmium(II)] dihydrate, C12H14N2O7Cd
  26. The crystal structure of 4-(4-phenyl-5-(((1-(2,4,6-tribromophenyl)-1H-1,2,3-triazol-4-yl)methyl)thio)-4H-1,2,4-triazol-3-yl)pyridine, C22H14Br3N7S
  27. The crystal structure of N-benzylquinoline-2-carbothioamide, C17H14N2S
  28. Crystal structure of bis(3-isopropylphenyl)-4,4′-bipyridinium dichloride dihydrate, C28H30N2⋅2Cl⋅2H2O
  29. The crystal structure of ethyl 2-amino-4-(cyanophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C19H18N2O4
  30. Crystal structure of (4R,10S)-6-hydroxy-7-isopropyl-4,10-dimethyl-1,2,3,5-hexahydro-6,10-epoxyazulen-9-one, C15H22O3
  31. The crystal structure of (E)-(2-(2-hydroxy-3-methoxybenzylidene)aminophenyl)arsonic acid, C14H14AsNO5
  32. The crystal structure of poly[(μ 2-2-aminoisophthalato-κ4O,O′:O″:O″′)-(N-methylpyrrolidone κ1O)-dioxido-uranium(VI)], C13H14N2O7U
  33. The crystal structure of the co-crystal isonicotinamide · terephthalic acid, C8H6O4·2(C6H6N2O)
  34. The crystal structure of (E)-1-phenyl-3-(p-tolylthio)but-2-en-1-one, C17H16OS
  35. The crystal structure of 4,5-bis((Z)-chloro(hydroxyimino)methyl)-1H-imidazol-3-ium chloride monohydrate
  36. The crystal structure of 1,2-bis(4-(dimethylamino)phenyl)ethane-1,2-dione. C18H20N2O2
  37. Crystal structure of 2-chloro-4-fluorobenzyl 2-acetoxybenzoate, C16H12ClFO4
  38. Crystal structure of methyl 1-phenyl-9H-pyrido[3,4-b]indole-3-carboxylate, C19H14N2O2
  39. Crystal structure of (3-(dimethoxymethyl)-5-methoxy-1H-indol-1-yl)(5-fluoro-2-iodophenyl)methanone, C19H17FINO4
  40. Crystal structure of tetrachlorido-bis(1-[(1H-triazole-1-yl)methyl]-1H-benzotriazole-κ2 N:N′)dicopper, C36H32Cu2N24Cl4
  41. Crystal structure of 2-(2,3-bis(4-methoxyphenyl)-1H-pyrrolo[2,3-b]quinoxalin-1-yl)anilin, C30H24N4O2
  42. Crystal structure of 5,7-dihydroxy-2-phenyl-4H-chromen-4-one–N,N-dimethylformamide(1/1), C18H17NO5
  43. The crystal structure of bis(μ 2-biphenyl-2,2′-dicarboxylato)-diaqua-bis(nitrato)-bis(2,2′:6′,2′′-terpyridine)dineodymium(III), C46H32I2N8Nd2O16
  44. Crystal structure of (Z)-4-amino-N ′-((4-chlorophenyl)(phenyl)methylene)benzohydrazide, C20H16ClN3O
  45. Crystal structure of (E)-6,8-dimethoxy-4-(4-morpholinobenzylidene)-3,4-dihydro-1-benzoxepin-5(2H)-one, C23H25NO5
  46. Crystal structure of (R)-2-((3-(3-aminopiperidin-1-yl)-6-methyl-5-oxo-1,2,4-triazin-4(5H)-yl) methyl)-4-fluorobenzonitrile benzoate monohydrate, C24H27FN6O4
  47. The crystal structure of [triaqua-(8-carboxymethoxy-quinoline-2-carboxylato-κ 3 N,O,O)copper(II)]monohydrate, C12H15NO9Cu
  48. Crystal structure of (((4-chlorophenyl)sulfonyl)glycinato-κ 2 N,O)bis(1,10-phenanthroline-κ 2 N,N′)cobalt(II) tetrahydrate, C32H30ClCoN5O8S
  49. Crystal structure of (((3-nitrophenyl)sulfonyl)-β-alaninato-κO)bis(2,2′-bipyridine-κ 2 N, N′)copper(II) 3-nitrobenzenesulfonate, C35H29CuN7O11S2
  50. Crystal structure of 3-phenoxybenzyl 2-(6-methoxynaphthalen-2-yl)propanoate, C27H24O4
  51. 6-(2′,3′-Dihydroxy-3′-methylbutyl)-7-methoxy-8-(3″-methylbut-2″-en-1″-yl)-2H-chromen-2-one, C20H26O5
  52. Crystal structure of bromido-(2,2′:6′,2″-terpyridine-4′-onato-κ3N)palladium(II) methanol solvate
  53. The crystal structure of ethyl 2-amino-(4-nitrophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C20H22N2O6
  54. Crystal structure of (1E,3E,5E)-1,6-bis(4-(pentyloxy)phenyl)hexa-1,3,5-triene, C28H36O2
  55. The crystal structure of tris(2-bromo-4-methylphenyl)amine, C21H18Br3N
  56. The crystal structure of 3-(2,5-dimethylanilino)-1-(2,5-dimethylphenyl)-4-methyl-1H-pyrrole-2,5-dione, C21H22N2O2
  57. Crystal structure of dicarbonyl (μ2-indole-2-carboxylato κ2 O:O′)tris(triphenylarsine-κAs)dirhodium(I) acetone solvate, C68H56As3NO5Rh2
  58. The crystal structure of 4-chloro-2-formylphenyl 4-methylbenzenesulfonate, C14H11ClO4S
  59. Crystal structure of 4-iodobenzyl 2-(6-methoxynaphthalen-2-yl) propanoate, C21H19IO3
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