Home Physical Sciences The crystal structure of 1-methyl-3-(N-methylnitrous amide–N-methylene) imidazolidine-2,4,5-trione
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The crystal structure of 1-methyl-3-(N-methylnitrous amide–N-methylene) imidazolidine-2,4,5-trione

  • Wei Xiaolin , Zhou Jianhui , Geng Jinjun , Wen Zhiwei , Qu Manyi , Hou Xiaoting , Li Ruiqin , Feng Rui , Zhao Lukui , Lian Pengbao ORCID logo EMAIL logo and Wang Jianlong
Published/Copyright: February 21, 2025

Abstract

C6H8O4N4, orthorhombic, Pna21 (no. 33), a = 6.5487(4) Å, b = 17.5223(9) Å, c = 7.5728(4) Å, V = 868.97(8) Å3, Z = 4, R gt (F) = 0.0740, wRref (F2) = 0.0761, T = 106.0 K.

CCDC no.: 2421335

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.

1 Source of material

An amount of 0.2 g of 1-methyl-3-(N-methylnitrous amide–N-methylene)imidazolidine-2,4,5-trione was added to 5 ml of methanol and evaporated at room temperature to give colorless block crystals.

Table 1:

Data collection and handling.

Crystal: block
Size: 0.40 × 0.35 × 0.15 mm
Wavelength: MoKα radiation (0.71073 Å)
μ: 0.13 mm−1
Diffractometer, scan mode: Xcalibur, Eos, Gemini, φ and ω scans
θmax, completeness: 26.0°, 100 %
N(hkl)measured, N(hkl)unique, Rint: 3112, 1612, 0.026
Criterion for Iobs, N(hkl)gt: Iobs > 2σ(Iobs), 1,530
N(param)refined: 129
Programs: Rigaku, 1 Olex2, 2 SHELX 3 , 4
Table 2:

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

x y z U iso */U eq
O1 0.4777 (3) 0.98274 (10) 0.2486 (3) 0.0284 (5)
O2 0.1086 (3) 0.99297 (10) 0.4813 (3) 0.0249 (5)
O3 0.5304 (3) 0.80631 (9) 0.6911 (2) 0.0263 (5)
O4 0.7007 (3) 0.67930 (10) 0.2076 (2) 0.0223 (5)
N1 0.2743 (3) 0.89228 (12) 0.6179 (3) 0.0161 (5)
N2 0.5581 (3) 0.88764 (12) 0.4497 (3) 0.0166 (5)
N3 0.7308 (3) 0.80105 (12) 0.2525 (3) 0.0167 (5)
N4 0.7354 (3) 0.73085 (12) 0.3168 (3) 0.0188 (5)
C1 0.4395 (4) 0.94426 (14) 0.3765 (3) 0.0189 (6)
C2 0.2483 (4) 0.94871 (15) 0.4952 (4) 0.0182 (6)
C3 0.4619 (4) 0.85584 (13) 0.5981 (3) 0.0181 (6)
C4 0.7543 (4) 0.86032 (16) 0.3840 (4) 0.0209 (6)
H4A 0.828936 0.902718 0.332792 0.025*
H4B 0.833870 0.840649 0.481958 0.025*
C5 0.6891 (5) 0.81782 (16) 0.0680 (4) 0.0250 (7)
H5A 0.755578 0.780663 −0.005253 0.037*
H5B 0.739611 0.867779 0.039830 0.037*
H5C 0.544441 0.816083 0.047669 0.037*
C6 0.1395 (5) 0.87887 (15) 0.7695 (4) 0.0249 (7)
H6A 0.095577 0.826603 0.769584 0.037*
H6B 0.022570 0.911733 0.761351 0.037*
H6C 0.212121 0.889513 0.876860 0.037*

2 Experimental details

Hydrogen atoms were placed in their geometrically idealized positions and constrained to ride on their parent atoms.

3 Discussion

1–Methyl-2,4,5-trinitroimidazole is an energetic compound with good performance. 5 , 6 1–Methyl-2,4,5-trinitroimidazole is obtained by nitration of 1-methyl-2,4,5-triiodoimidazole with a mixture of HNO3 and H2SO4. 7 , 8 , 9 , 10 The title compound was obtained by nitration of 1-methyl-2,4,5-triiodoimidazole with a mixture of HNO3 and H2SO4 in DMF solution.

The crystal structure of the title compound was analyzed and refined by Shelxl program. 1 , 2 , 3 , 4 As shown in the figure, the asymmetric unit contains one title molecule. The bond lengths and angles within these moieties are in the expected ranges. 11 , 12 The imidazole rings are planar, the carbon atoms of the methyl group (N1) and the methylene group (N2), the oxygen atom of the carbonyl group are nearly coplanar with the imidazole ring. However, all other atoms are twisted out of the imidazole ring.


Corresponding author: Lian Pengbao, Shanxi North Xingan Chemical Industry CO. LTD, China North Industries Group Corporation Limited, Taiyuan 030008, Shanxi Province, P.R. China, E-mail:

Acknowledgments

We thank the Center of Testing and Analysis, Beijing University of Chemical Technology, for support.

References

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Received: 2025-01-07
Accepted: 2025-02-04
Published Online: 2025-02-21
Published in Print: 2025-06-26

© 2025 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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