organic compounds
2-Aminobenzoxazole–oxalic acid (2/1)
aNational University of Uzbekistan named after Mirzo Ulugbek, 4 University St, Tashkent, 100174, Uzbekistan, bInstitute of General and Inorganic Chemistry, Academy of Sciences of Uzbekistan, 100170, M. Ulugbek Str 77a, Tashkent, Uzbekistan, and cInstitute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, M. Ulugbek, Str, 83, Tashkent, 100125, Uzbekistan
*Correspondence e-mail: torambetov_b@mail.ru
In the title compound, 2C7H7N2O+·C2O42−, proton transfer from oxalic acid to the N atom of the heterocycle has occurred to form a 2:1 molecular salt. In the extended structure, N—H⋯O hydrogen bonds link the components into [100] chains, which feature R22(8) and R44(14) loops.
CCDC reference: 2324364
Structure description
2-Aminobenzoxazole has gained significant attention in the field of organic chemistry due to its diverse range of applications and properties. This heterocyclic compound exhibits intriguing structural features and has demonstrated potential utility in the development of pharmaceuticals and agrochemicals and in materials science (Hwang et al., 2006; Potashman et al., 2007). With its aromatic and nitrogen-containing structural motifs, 2-aminobenzoxazole has emerged as a key scaffold for the synthesis of biologically active molecules and advanced materials. Herein, we report on the analysis of a new 2-aminobenzoxazole–oxalic acid molecular salt.
The title organic salt crystallizes in the monoclinic P21/n. The molecular structure of the organic salt is shown in Fig. 1. The geometric parameters of the arene and oxazole rings are similar to standard values and to those in other related structures (Ashurov et al., 2011, 2015; Wang et al., 2016). In the oxalate (OXL) part of the organic salt, two hydrogen atoms are transferred to the nitrogen of the oxazole fragments, as in other 2-aminobenzoxazole (2ABO) structures (Nandy et al., 2016; Razzoqova et al., 2022, 2023). As a result, the 2ABO and OXL ions form two closed eight-membered rings with an R22(8) graph-set notation (Etter et al., 1990). This represents a 1:2 acid-base association (Calva et al., 2011), with the first ring formed by N1—H1⋯O4 and N2—H2B⋯O3 hydrogen bonds and the second by N4—H4B⋯O6 and N3—H3A⋯O5 hydrogen bonds (Table 1). N2—H2A⋯O4 and N4—H4A⋯O5 hydrogen bonds further link the components into [100] chains, thereby forming a 14-membered ring with an R44(14) graph-set motif (Fig. 2) (Etter et al., 1990). The chains are shown in Fig. 3.
The identification of the et al., 2020). The mean planes of the carboxylic fragments in the OXL ion are turned by 10.13 (4)° from each other. In the crystal, the 2BAO and OXL ions are not coplanar, the 2ABO ions being inclined to the OXL ions by 18.81 (3) and 16.00 (5)°. The dihedral angle between the 2ABO ions is 37.52 (2)°.
as a salt is based on the successful of the relevant H atoms using X-ray data. The proton transfer is further supported by the C—O distances [O4—C15 = 1.266 (2) Å, O3—C15 = 1.234 (2) Å, O5—C16 = 1.272 (2) Å and O6—C16 = 1.222 (2) Å] with differences between the bond lengths within each group of 0.032 and 0.050 Å; these differences differ from those for O—C distances in deprotonated carboxyl groups. In non-deprotonated oxalic acid, these differences are greater (SasakiSynthesis and crystallization
A 2:1 stoichiometric ratio of 2-aminobenzoxazole (0.268 g, 2.0 mmol) and oxalic acid (0.090 g, 1.0 mmol) was dissolved and mixed well in distilled water (5 ml). The mixture was stirred at room temperature for 30 minutes. The solution was then transferred to a vial with small holes in the cover to allow for evaporation. After about 3 weeks, cube-like single crystals of the title salt suitable for data collection were obtained.
Refinement
Crystal data, data collection and structure .
details are summarized in Table 2
|
Structural data
CCDC reference: 2324364
https://doi.org/10.1107/S2414314624000336/bv4051sup1.cif
contains datablock I. DOI:Supporting information file. DOI: https://doi.org/10.1107/S2414314624000336/bv4051Isup2.cml
2C7H7N2O+·C2O42− | F(000) = 744 |
Mr = 358.31 | Dx = 1.541 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54184 Å |
a = 6.5080 (2) Å | Cell parameters from 2449 reflections |
b = 17.6943 (7) Å | θ = 4.1–70.3° |
c = 13.6264 (5) Å | µ = 1.03 mm−1 |
β = 100.200 (4)° | T = 293 K |
V = 1544.34 (10) Å3 | Needle, light yellow |
Z = 4 | 0.17 × 0.14 × 0.12 mm |
XtaLAB Synergy, Single source at home/near, HyPix3000 diffractometer | 2960 independent reflections |
Radiation source: micro-focus sealed X-ray tube, PhotonJet (Cu) X-ray Source | 2288 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.031 |
Detector resolution: 10.0000 pixels mm-1 | θmax = 71.4°, θmin = 4.1° |
ω scans | h = −8→7 |
Absorption correction: multi-scan (CrysAlisPro; Rigaku OD, 2020) | k = −20→21 |
Tmin = 0.157, Tmax = 1.000 | l = −13→16 |
2960 measured reflections |
Refinement on F2 | Primary atom site location: dual |
Least-squares matrix: full | Hydrogen site location: mixed |
R[F2 > 2σ(F2)] = 0.045 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.132 | w = 1/[σ2(Fo2) + (0.0724P)2 + 0.1538P] where P = (Fo2 + 2Fc2)/3 |
S = 1.03 | (Δ/σ)max < 0.001 |
2960 reflections | Δρmax = 0.23 e Å−3 |
259 parameters | Δρmin = −0.20 e Å−3 |
6 restraints |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
Refinement. The hydrogen atoms of amino groups and protonated nitrogen atoms of oxzole groups were located in difference - Fourier maps and refined with restrained distances of 0.85±(1) Å. The H atoms of the benzene ring were calculated geometrically with C—H = 0.93 Å and Uiso(H) = 1.2Ueq(C). |
x | y | z | Uiso*/Ueq | ||
O1 | 0.1212 (2) | 0.44529 (8) | 0.33805 (10) | 0.0428 (3) | |
N1 | 0.4453 (2) | 0.48755 (9) | 0.38019 (11) | 0.0381 (4) | |
H1 | 0.545 (3) | 0.5203 (13) | 0.3995 (19) | 0.082 (9)* | |
C1 | 0.4597 (3) | 0.41299 (11) | 0.34764 (13) | 0.0366 (4) | |
O2 | 1.3397 (2) | 0.94256 (8) | 0.42539 (10) | 0.0410 (3) | |
N2 | 0.1639 (3) | 0.56637 (11) | 0.39934 (16) | 0.0521 (5) | |
H2A | 0.0351 (19) | 0.5701 (15) | 0.4069 (18) | 0.069 (8)* | |
H2B | 0.252 (3) | 0.6021 (11) | 0.4168 (18) | 0.069 (8)* | |
C2 | 0.6255 (3) | 0.36637 (12) | 0.34088 (15) | 0.0439 (5) | |
H2 | 0.762934 | 0.382283 | 0.360114 | 0.053* | |
O3 | 0.4839 (2) | 0.67161 (8) | 0.42640 (12) | 0.0540 (4) | |
N3 | 1.0284 (2) | 0.88951 (9) | 0.42134 (12) | 0.0381 (4) | |
H3A | 0.927 (3) | 0.8578 (14) | 0.427 (2) | 0.090 (10)* | |
C3 | 0.5769 (4) | 0.29442 (12) | 0.30389 (16) | 0.0518 (5) | |
H3 | 0.685094 | 0.261048 | 0.299092 | 0.062* | |
O4 | 0.7441 (2) | 0.58949 (7) | 0.42948 (10) | 0.0432 (3) | |
N4 | 1.3345 (3) | 0.81860 (10) | 0.47545 (14) | 0.0470 (4) | |
H4A | 1.4629 (19) | 0.8123 (15) | 0.4680 (17) | 0.061 (7)* | |
H4B | 1.258 (3) | 0.7797 (10) | 0.4805 (18) | 0.064 (8)* | |
C4 | 0.3719 (4) | 0.27030 (13) | 0.27364 (17) | 0.0533 (6) | |
H4 | 0.346243 | 0.222044 | 0.247253 | 0.064* | |
O5 | 0.7522 (2) | 0.78759 (8) | 0.43539 (12) | 0.0517 (4) | |
C5 | 0.2049 (3) | 0.31731 (12) | 0.28231 (16) | 0.0497 (5) | |
H5 | 0.066961 | 0.301904 | 0.263314 | 0.060* | |
O6 | 1.0164 (2) | 0.70685 (9) | 0.46759 (14) | 0.0624 (5) | |
C6 | 0.2561 (3) | 0.38746 (11) | 0.32045 (13) | 0.0394 (4) | |
C7 | 0.2444 (3) | 0.50366 (11) | 0.37490 (13) | 0.0383 (4) | |
C8 | 0.9941 (3) | 0.96341 (10) | 0.38748 (13) | 0.0350 (4) | |
C9 | 0.8136 (3) | 1.00364 (12) | 0.35338 (13) | 0.0420 (4) | |
H9 | 0.682079 | 0.982192 | 0.350086 | 0.050* | |
C10 | 0.8389 (3) | 1.07772 (13) | 0.32431 (15) | 0.0490 (5) | |
H10 | 0.720945 | 1.106402 | 0.300336 | 0.059* | |
C11 | 1.0345 (4) | 1.11046 (13) | 0.32983 (16) | 0.0531 (5) | |
H11 | 1.044476 | 1.160508 | 0.310364 | 0.064* | |
C12 | 1.2147 (3) | 1.06995 (12) | 0.36377 (16) | 0.0483 (5) | |
H12 | 1.346707 | 1.091225 | 0.368116 | 0.058* | |
C13 | 1.1870 (3) | 0.99662 (11) | 0.39057 (13) | 0.0377 (4) | |
C14 | 1.2326 (3) | 0.87935 (11) | 0.44171 (13) | 0.0372 (4) | |
C15 | 0.6703 (3) | 0.65540 (10) | 0.43310 (13) | 0.0354 (4) | |
C16 | 0.8301 (3) | 0.72137 (11) | 0.44698 (14) | 0.0379 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0305 (7) | 0.0392 (7) | 0.0574 (8) | −0.0051 (5) | 0.0037 (5) | −0.0028 (6) |
N1 | 0.0284 (8) | 0.0363 (9) | 0.0492 (8) | −0.0048 (6) | 0.0058 (6) | −0.0030 (7) |
C1 | 0.0356 (10) | 0.0348 (10) | 0.0396 (9) | −0.0046 (8) | 0.0071 (7) | 0.0037 (7) |
O2 | 0.0322 (7) | 0.0382 (7) | 0.0536 (8) | −0.0047 (5) | 0.0098 (5) | 0.0007 (6) |
N2 | 0.0331 (9) | 0.0404 (10) | 0.0844 (13) | −0.0023 (8) | 0.0144 (9) | −0.0085 (9) |
C2 | 0.0377 (11) | 0.0428 (11) | 0.0523 (11) | 0.0007 (8) | 0.0110 (8) | 0.0039 (9) |
O3 | 0.0292 (7) | 0.0391 (8) | 0.0945 (11) | −0.0031 (6) | 0.0131 (7) | −0.0047 (8) |
N3 | 0.0298 (8) | 0.0342 (9) | 0.0515 (9) | −0.0049 (7) | 0.0101 (6) | −0.0018 (7) |
C3 | 0.0567 (14) | 0.0396 (11) | 0.0626 (13) | 0.0058 (10) | 0.0202 (10) | 0.0046 (10) |
O4 | 0.0327 (7) | 0.0323 (7) | 0.0645 (8) | −0.0021 (5) | 0.0086 (6) | −0.0027 (6) |
N4 | 0.0360 (10) | 0.0392 (10) | 0.0663 (11) | 0.0014 (8) | 0.0102 (8) | 0.0037 (8) |
C4 | 0.0648 (15) | 0.0344 (11) | 0.0637 (13) | −0.0072 (10) | 0.0199 (11) | −0.0045 (10) |
O5 | 0.0324 (7) | 0.0332 (7) | 0.0900 (11) | −0.0013 (6) | 0.0120 (7) | 0.0054 (7) |
C5 | 0.0486 (12) | 0.0430 (12) | 0.0579 (12) | −0.0135 (9) | 0.0105 (9) | −0.0027 (9) |
O6 | 0.0291 (8) | 0.0397 (9) | 0.1155 (14) | −0.0015 (6) | 0.0047 (8) | 0.0032 (8) |
C6 | 0.0351 (10) | 0.0378 (10) | 0.0451 (10) | −0.0019 (8) | 0.0063 (7) | 0.0037 (8) |
C7 | 0.0328 (9) | 0.0344 (10) | 0.0477 (10) | −0.0039 (7) | 0.0066 (7) | 0.0009 (8) |
C8 | 0.0355 (10) | 0.0337 (10) | 0.0367 (8) | −0.0029 (7) | 0.0093 (7) | −0.0032 (7) |
C9 | 0.0353 (10) | 0.0433 (11) | 0.0476 (10) | 0.0004 (8) | 0.0082 (8) | −0.0014 (9) |
C10 | 0.0491 (12) | 0.0459 (12) | 0.0525 (11) | 0.0074 (9) | 0.0102 (9) | 0.0043 (9) |
C11 | 0.0620 (14) | 0.0383 (12) | 0.0616 (13) | −0.0022 (10) | 0.0180 (10) | 0.0085 (10) |
C12 | 0.0476 (12) | 0.0418 (12) | 0.0576 (12) | −0.0100 (9) | 0.0154 (9) | 0.0013 (9) |
C13 | 0.0361 (10) | 0.0357 (10) | 0.0423 (9) | −0.0014 (8) | 0.0098 (7) | −0.0029 (8) |
C14 | 0.0330 (10) | 0.0340 (10) | 0.0453 (9) | −0.0050 (7) | 0.0090 (7) | −0.0041 (8) |
C15 | 0.0304 (9) | 0.0343 (10) | 0.0420 (9) | −0.0025 (7) | 0.0079 (7) | 0.0009 (8) |
C16 | 0.0305 (9) | 0.0336 (10) | 0.0498 (10) | −0.0033 (7) | 0.0077 (7) | 0.0007 (8) |
O1—C6 | 1.397 (2) | N4—H4A | 0.866 (10) |
O1—C7 | 1.349 (2) | N4—H4B | 0.858 (10) |
N1—H1 | 0.876 (10) | N4—C14 | 1.303 (3) |
N1—C1 | 1.400 (3) | C4—H4 | 0.9300 |
N1—C7 | 1.328 (2) | C4—C5 | 1.390 (3) |
C1—C2 | 1.374 (3) | O5—C16 | 1.276 (2) |
C1—C6 | 1.386 (3) | C5—H5 | 0.9300 |
O2—C13 | 1.400 (2) | C5—C6 | 1.364 (3) |
O2—C14 | 1.357 (2) | O6—C16 | 1.222 (2) |
N2—H2A | 0.865 (10) | C8—C9 | 1.382 (3) |
N2—H2B | 0.857 (10) | C8—C13 | 1.380 (3) |
N2—C7 | 1.296 (3) | C9—H9 | 0.9300 |
C2—H2 | 0.9300 | C9—C10 | 1.388 (3) |
C2—C3 | 1.385 (3) | C10—H10 | 0.9300 |
O3—C15 | 1.234 (2) | C10—C11 | 1.388 (3) |
N3—H3A | 0.877 (10) | C11—H11 | 0.9300 |
N3—C8 | 1.391 (2) | C11—C12 | 1.382 (3) |
N3—C14 | 1.321 (2) | C12—H12 | 0.9300 |
C3—H3 | 0.9300 | C12—C13 | 1.369 (3) |
C3—C4 | 1.392 (3) | C15—C16 | 1.553 (3) |
O4—C15 | 1.266 (2) | ||
C7—O1—C6 | 105.93 (14) | C5—C6—C1 | 123.77 (19) |
C1—N1—H1 | 129 (2) | N1—C7—O1 | 111.77 (16) |
C7—N1—H1 | 123 (2) | N2—C7—O1 | 120.69 (17) |
C7—N1—C1 | 107.77 (15) | N2—C7—N1 | 127.53 (18) |
C2—C1—N1 | 133.15 (18) | C9—C8—N3 | 132.26 (18) |
C2—C1—C6 | 120.73 (18) | C13—C8—N3 | 107.36 (16) |
C6—C1—N1 | 106.12 (16) | C13—C8—C9 | 120.37 (18) |
C14—O2—C13 | 105.31 (14) | C8—C9—H9 | 121.8 |
H2A—N2—H2B | 122 (3) | C8—C9—C10 | 116.46 (19) |
C7—N2—H2A | 122.7 (18) | C10—C9—H9 | 121.8 |
C7—N2—H2B | 115.0 (19) | C9—C10—H10 | 118.9 |
C1—C2—H2 | 121.8 | C9—C10—C11 | 122.2 (2) |
C1—C2—C3 | 116.40 (19) | C11—C10—H10 | 118.9 |
C3—C2—H2 | 121.8 | C10—C11—H11 | 119.4 |
C8—N3—H3A | 123 (2) | C12—C11—C10 | 121.1 (2) |
C14—N3—H3A | 129 (2) | C12—C11—H11 | 119.4 |
C14—N3—C8 | 107.10 (15) | C11—C12—H12 | 122.1 |
C2—C3—H3 | 118.8 | C13—C12—C11 | 115.9 (2) |
C2—C3—C4 | 122.3 (2) | C13—C12—H12 | 122.1 |
C4—C3—H3 | 118.8 | C8—C13—O2 | 107.87 (16) |
H4A—N4—H4B | 119 (2) | C12—C13—O2 | 128.21 (18) |
C14—N4—H4A | 120.4 (17) | C12—C13—C8 | 123.92 (19) |
C14—N4—H4B | 115.1 (18) | N3—C14—O2 | 112.34 (16) |
C3—C4—H4 | 119.5 | N4—C14—O2 | 119.57 (17) |
C5—C4—C3 | 120.9 (2) | N4—C14—N3 | 128.08 (18) |
C5—C4—H4 | 119.5 | O3—C15—O4 | 125.89 (17) |
C4—C5—H5 | 122.1 | O3—C15—C16 | 117.56 (16) |
C6—C5—C4 | 115.8 (2) | O4—C15—C16 | 116.55 (16) |
C6—C5—H5 | 122.1 | O5—C16—C15 | 115.62 (16) |
C1—C6—O1 | 108.39 (16) | O6—C16—O5 | 125.33 (18) |
C5—C6—O1 | 127.84 (18) | O6—C16—C15 | 119.06 (17) |
N1—C1—C2—C3 | −179.9 (2) | C6—C1—C2—C3 | 1.4 (3) |
N1—C1—C6—O1 | −1.0 (2) | C7—O1—C6—C1 | 0.03 (19) |
N1—C1—C6—C5 | 178.36 (18) | C7—O1—C6—C5 | −179.3 (2) |
C1—N1—C7—O1 | −1.8 (2) | C7—N1—C1—C2 | −177.2 (2) |
C1—N1—C7—N2 | 179.0 (2) | C7—N1—C1—C6 | 1.7 (2) |
C1—C2—C3—C4 | 0.9 (3) | C8—N3—C14—O2 | 1.1 (2) |
C2—C1—C6—O1 | 178.00 (16) | C8—N3—C14—N4 | 179.93 (19) |
C2—C1—C6—C5 | −2.6 (3) | C8—C9—C10—C11 | −0.6 (3) |
C2—C3—C4—C5 | −2.0 (3) | C9—C8—C13—O2 | −178.45 (16) |
O3—C15—C16—O5 | −10.1 (3) | C9—C8—C13—C12 | 1.8 (3) |
O3—C15—C16—O6 | 169.97 (19) | C9—C10—C11—C12 | 0.8 (3) |
N3—C8—C9—C10 | −179.46 (19) | C10—C11—C12—C13 | 0.3 (3) |
N3—C8—C13—O2 | 0.65 (19) | C11—C12—C13—O2 | 178.73 (18) |
N3—C8—C13—C12 | −179.10 (18) | C11—C12—C13—C8 | −1.6 (3) |
C3—C4—C5—C6 | 0.9 (3) | C13—O2—C14—N3 | −0.71 (19) |
O4—C15—C16—O5 | 169.79 (17) | C13—O2—C14—N4 | −179.63 (17) |
O4—C15—C16—O6 | −10.2 (3) | C13—C8—C9—C10 | −0.6 (3) |
C4—C5—C6—O1 | −179.32 (18) | C14—O2—C13—C8 | 0.00 (18) |
C4—C5—C6—C1 | 1.4 (3) | C14—O2—C13—C12 | 179.74 (19) |
C6—O1—C7—N1 | 1.1 (2) | C14—N3—C8—C9 | 177.88 (19) |
C6—O1—C7—N2 | −179.66 (18) | C14—N3—C8—C13 | −1.07 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O4 | 0.88 (1) | 1.78 (1) | 2.650 (2) | 176 (3) |
N2—H2A···O4i | 0.87 (1) | 2.00 (1) | 2.863 (2) | 174 (3) |
N2—H2B···O3 | 0.86 (1) | 1.94 (1) | 2.770 (2) | 164 (2) |
C2—H2···O1ii | 0.93 | 2.65 | 3.522 (2) | 157 |
N3—H3A···O5 | 0.88 (1) | 1.71 (1) | 2.577 (2) | 173 (3) |
N4—H4A···O5ii | 0.87 (1) | 2.06 (1) | 2.918 (2) | 172 (2) |
N4—H4B···O6 | 0.86 (1) | 2.02 (1) | 2.851 (2) | 163 (2) |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z. |
Funding information
Funding for this research was provided by: Ministry of Higher Education, Science and Innovation of the Republic of Uzbekistan.
References
Ashurov, J., Karimova, G., Mukhamedov, N., Parpiev, N. A. & Ibragimov, B. (2011). Acta Cryst. E67, m432. Web of Science CSD CrossRef IUCr Journals Google Scholar
Ashurov, J. M., Mukhamedov, N. S., Tashkhodzhaev, B. & Ibragimov, A. B. (2015). J. Struct. Chem. 56, 1148–1153. CSD CrossRef CAS Google Scholar
Calva, A. H., Velasco, A. L. P., Martínez, M., Pérez-Benítez, A., Bernès, S. & Vergara, E. G. (2011). J. Chem. Crystallogr. 41, 1461–1466. CSD CrossRef Google Scholar
Dolomanov, O. V., Bourhis, L. J., Gildea, R. J., Howard, J. A. K. & Puschmann, H. (2009). J. Appl. Cryst. 42, 339–341. Web of Science CrossRef CAS IUCr Journals Google Scholar
Etter, M. C., MacDonald, J. C. & Bernstein, J. (1990). Acta Cryst. B46, 256–262. CrossRef ICSD CAS Web of Science IUCr Journals Google Scholar
Hwang, J. Y. & Gong, Y.-D. (2006). J. Comb. Chem. 8, 297–303. CrossRef PubMed CAS Google Scholar
Nandy, P., Nayak, A., Biswas, S. N. & Pedireddi, V. R. (2016). J. Mol. Struct. 1108, 717–726. CSD CrossRef CAS Google Scholar
Potashman, M. H., Bready, J., Coxon, A., DeMelfi, T. M., DiPietro, L., Doerr, N., Elbaum, D., Estrada, J., Gallant, P., Germain, J., Gu, Y., Harmange, J. C., Kaufman, S. A., Kendall, R., Kim, J. L., Kumar, G. N., Long, A. M., Neervannan, S., Patel, V. F., Polverino, A., Rose, P., van der Plas, S., Whittington, D., Zanon, R. & Zhao, H. (2007). J. Med. Chem. 50, 4351–4373. Web of Science CrossRef PubMed CAS Google Scholar
Razzoqova, S., Ibragimov, A., Torambetov, B., Kadirova, S., Holczbauer, T., Ashurov, J. & Ibragimov, B. (2023). Acta Cryst. E79, 862–866. CSD CrossRef IUCr Journals Google Scholar
Razzoqova, S., Torambetov, B., Amanova, M., Kadirova, S., Ibragimov, A. & Ashurov, J. (2022). Acta Cryst. E78, 1277–1283. Web of Science CSD CrossRef IUCr Journals Google Scholar
Rigaku OD (2020). CrysAlis PRO. Rigaku Oxford Diffraction Ltd, Yarnton, England. Google Scholar
Sasaki, T., Sakamoto, S. & Takamizawa, S. (2020). Cryst. Growth Des. 20, 1935–1939. CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (2015a). Acta Cryst. A71, 3–8. Web of Science CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (2015b). Acta Cryst. C71, 3–8. Web of Science CrossRef IUCr Journals Google Scholar
Wang, A., Ashurov, J., Ibragimov, A., Wang, R., Mouhib, H., Mukhamedov, N. & Englert, U. (2016). Acta Cryst. B72, 142–150. Web of Science CSD CrossRef IUCr Journals Google Scholar
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