research communications
Structural investigation of N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide and N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]-4-methoxybenzamide
aDepartment of Chemistry, Indian Institute of Science Education and Research, Bhopal, Bhauri, Bhopal 462066, India, and bRallis India Ltd, Bangalore 560091, Karnataka, India
*Correspondence e-mail: dchopra@iiserb.ac.in
The compound N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide, C21H16FN3O3S, crystallizes in the monoclinic centrosymmetric P21/c and its molecular conformation is stabilized via an intramolecular N—H⋯O hydrogen bond. The corresponding para-methoxy derivative, namely, N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]-4-methoxybenzamide, C22H18FN3O4S, crystallizes in the monoclinic centrosymmetric C2/c. The supramolecular network mainly comprises N—H⋯O, N—H⋯S and C—H⋯O hydrogen bonds, which contribute towards the formation of the crystal structures for the two molecules. The different intermolecular interactions have been further analysed using Hirshfeld surface analysis and fingerprint plots.
1. Chemical context
Substituted thiosemicarbazides (TSCs) constitute an important class of organic compounds with the general formula R–(C=O)–NH–NH–(C=S)–R′ and find application in the synthesis of five- and six-membered (Gazieva & Kravchenko, 2012) and transition-metal complexes (Campbell, 1975). The chemical diversity of thiosemicarbazides, and their synthesis, including their role in biological applications, is nicely summarized in a recent review article (Acharya et al., 2021). Dibenzoylated TSCs have been synthesized and explored for their antibacterial activity (Qandil et al., 2006). Furthermore, molecular modelling studies establish the relevance of both geometry and electron-density distribution in the observed antibacterial activity (Paneth et al., 2016). Piperidin-4-yl-based TSCs have been examined for cytotoxicity in breast cancer cell lines in addition to being possible potential topoisomerase inhibitors (Siwek et al., 2014). 1-(2-Hydroxybenzoyl)-thiosemicarbazides have been observed to exhibit antimicrobial activity and structure–activity relationship (SARs) studies establish that the 2-hydroxybenzoyl group plays an important role in enzyme inhibition, in addition to these exhibiting low cytotoxicity (Ameryckx et al., 2018). Furthermore, triazole-substituted benzoylthiosemicarbazides have been synthesized and their effect on the inhibition of corrosion on mild steel has been investigated (Yan et al., 2018). Keeping in mind the above-mentioned applications of substituted TSCs, we have performed the synthesis and analysis of two compounds, namely N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide (A1) and N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]-4-methoxybenzamide (A2) in the current study. The molecular conformations have been studied with respect to the various flexible bonds and the occurrence of various intermolecular interactions that contribute towards the stability of the molecules in the crystalline lattice has been investigated in detail via an investigation of the crystal packing and quantitative insights from Hirshfeld surface analysis.
2. Structural commentary
Compound A1 crystallizes in the centrosymmetric monoclinic P21/c and A2 crystallizes in the centrosymmetric monoclinic C2/c The molecular structure comprises one fluoro-substituted phenoxybenzoyl ring, a rigid and planar (C=O)—NH—NH—(C=S) moiety and a benzamide ring. The bond lengths and bond angles are in accordance with the magnitudes in the literature. The molecular conformations of A1 (Fig. 1) and A2 (Fig. 2) are both conformationally locked via the presence of an N—H⋯O hydrogen bond (involving H2N and O3), the N2⋯O3 distance being 2.555 (2) and 2.589 (4) Å in A1 and A2, respectively. The molecular structure possesses four conformational due to the with respect to the N1—N2, C7—O1, O1—C1 and C15—C16 single bonds. The torsion angles C13—N1—N2—C14, C8—C7—O1—C1, C7—O1—C1—C2 and N3—C15—C16—C21 are 163.27 (16)/-143.5 (4)°, 97.3 (2)/149.6 (5)°, 167.18 (18)/148.1 (4)° and −160.26 (15)/-174.7 (3)° in A1/A2, respectively.
3. Supramolecular features
In the N⋯O2 and C18—H18⋯O3 hydrogen bonds (Table 1), forming molecular chains along the c-axis direction utilizing the c-glide as the (Fig. 3). Adjacent layers are held together via C20—H20⋯O1 and C19—H19⋯S1 hydrogen bonds. The crystal packing of A2 (Fig. 4) primarily consists of N1—H1⋯O2 hydrogen bonds (Table 2), forming molecular chains along the b-axis direction. Two such adjacent layers are held via N3—H3N⋯S1 and C17—H17⋯S1 hydrogen bonds. In addition S1⋯C17 contacts (S⋯π type), [3.384 (4) Å, 174.9 (1)°, −x + 1, y + 1, −z + ] chalcogen-centered contacts are also present in the crystal packing (Fig. 4). Intermolecular contacts involving chalcogens are well-recognized in the literature [Pramanik & Chopra, 2020]. Furthermore, additional C21—H21⋯O3 hydrogen bonds form centrosymmetric dimers and provide additional stability to the crystal packing.
of A1, the molecules are primarily assembled through the presence of N3—H34. Database survey
A search for the dibenzoylthiosemicarbazide skeleton, Ph–(C=O)–NH–NH–(C=S)–NH–(C=O)–Ph was carried out in the Cambridge Structural Database (CSD version 5.40, updates of Aug 2019; Groom et al., 2016) . No hits were obtained. Thus, further systematic studies related to the investigation of the role of differently substituted thiosemicarbazide molecules towards the crystal packing, including a detailed investigation of in this class of compounds, is of relevance.
5. Hirshfeld surface analysis and fingerprint plots
The relevance of different intermolecular interactions can be established via Hirshfeld surface analysis (Spackman & Jayatilaka, 2009). These surfaces, along with the two-dimensional fingerprint plots, were evaluated using Crystal Explorer 17.5 (Turner et al., 2017). The surfaces mapped over dnorm for A1, Fig. 5(a), and A2, Fig. 5(b) and 5(c), show the important hydrogen bonds. The red and blue spots correspond to intermolecular interactions that are less or greater than the sum of the van der Waals radii. The fingerprint plots depict the individual contributions of the different interactions. The fingerprint plots for A1/A2 (Figs. 6 and 7) show that the greatest contributions are from H⋯H (31.3/32%) contacts, followed by C⋯H/H⋯C (23.2/23.2%), O⋯H/H⋯O (14.3/16.7%), S⋯H/H⋯S (7/5.7%), S⋯C/C⋯S (4.9/2.8%) and F⋯H/H⋯F (8.8/6.9%) contacts. The O⋯H/H⋯O contribution is slightly higher in the case of A2 (16.7%) due to the presence of an additional methoxy group in the molecule. Further interactions, involving F⋯H/H⋯F, contributing around 7–9% (A1: 8.8% and A2: 6.9%) and S⋯H (A1: 7.0% and A2: 5.7%) correspond to the presence of highly directional interactions, involving fluorine and sulfur in A2, and are important; this is clearly illustrated in the fingerprint plot (Fig. 7). The percentage contribution of S⋯C/C⋯S contacts in A2 is 2.8% lower than in A1. However, the relevance of this contact is greater in A2 on account of the presence of the highly directional C—S⋯π intermolecular contact and this feature is also clearly visible in the 2D fingerprint plot (Fig. 7).
6. Synthesis and Crystallization
The title compounds were synthesized in accordance with the procedure reported in the literature (Mohan, 2006). Crystallization was performed in 5.0 ml beakers at room temperature via the slow evaporation method from methanol solvent.
7. Refinement
Crystal data, data collection and structure . H atoms were placed in idealized positions (N—H = 0.86 Å, C—H = 0.93 Å) and refined using a riding model with Uiso(H) = 1.2Ueq(C, N) or 1.5Ueq(C-methyl).
details are summarized in Table 3
|
Supporting information
https://doi.org/10.1107/S2056989021001900/dj2021sup1.cif
contains datablocks A1, A2. DOI:Structure factors: contains datablock A1. DOI: https://doi.org/10.1107/S2056989021001900/dj2021A1sup2.hkl
Structure factors: contains datablock A2. DOI: https://doi.org/10.1107/S2056989021001900/dj2021A2sup3.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989021001900/dj2021A1sup4.cml
Supporting information file. DOI: https://doi.org/10.1107/S2056989021001900/dj2021A2sup5.cml
For both structures, data collection: APEX2 (Bruker, 2012); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2018/3 (Sheldrick, 2015); molecular graphics: Mercury (Macrae et al., 2020), WinGX (Farrugia, 2012); software used to prepare material for publication: PLATON (Spek, 2020).C21H16FN3O3S | F(000) = 848 |
Mr = 409.43 | Dx = 1.401 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 18.3849 (13) Å | Cell parameters from 10485 reflections |
b = 7.7063 (6) Å | θ = 2.2–28.6° |
c = 13.9216 (10) Å | µ = 0.20 mm−1 |
β = 100.136 (5)° | T = 298 K |
V = 1941.6 (2) Å3 | Plates, colorless |
Z = 4 | 0.27 × 0.20 × 0.14 mm |
Bruker APEXII CCD diffractometer | 2753 reflections with I > 2σ(I) |
φ and ω scans | Rint = 0.043 |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | θmax = 27.7°, θmin = 2.3° |
h = −23→21 | |
31160 measured reflections | k = −10→10 |
4460 independent reflections | l = −18→18 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.043 | H-atom parameters constrained |
wR(F2) = 0.119 | w = 1/[σ2(Fo2) + (0.0531P)2 + 0.1773P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max < 0.001 |
4460 reflections | Δρmax = 0.15 e Å−3 |
262 parameters | Δρmin = −0.17 e Å−3 |
0 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. |
x | y | z | Uiso*/Ueq | ||
N2 | 0.35731 (8) | 0.0786 (2) | 0.88306 (10) | 0.0603 (4) | |
H2N | 0.398146 | 0.108884 | 0.865793 | 0.072* | |
O2 | 0.35727 (7) | 0.08997 (19) | 0.69344 (9) | 0.0715 (4) | |
N1 | 0.30299 (8) | 0.0015 (2) | 0.81656 (10) | 0.0635 (4) | |
H1 | 0.267495 | −0.053998 | 0.835584 | 0.076* | |
C15 | 0.47522 (9) | 0.2198 (2) | 1.01326 (12) | 0.0544 (4) | |
N3 | 0.40609 (7) | 0.18548 (18) | 1.03435 (9) | 0.0538 (4) | |
H3N | 0.398570 | 0.216229 | 1.091172 | 0.065* | |
C19 | 0.63953 (10) | 0.4486 (3) | 1.22873 (13) | 0.0637 (5) | |
H19 | 0.675815 | 0.500499 | 1.274731 | 0.076* | |
C13 | 0.30627 (10) | 0.0143 (2) | 0.72070 (12) | 0.0546 (4) | |
C11 | 0.24397 (10) | −0.0680 (2) | 0.65341 (12) | 0.0548 (4) | |
O3 | 0.48982 (7) | 0.18773 (19) | 0.93243 (8) | 0.0737 (4) | |
C12 | 0.23455 (10) | −0.0202 (2) | 0.55602 (12) | 0.0587 (5) | |
H12 | 0.267655 | 0.056422 | 0.535242 | 0.070* | |
C18 | 0.58177 (10) | 0.3634 (3) | 1.25799 (13) | 0.0651 (5) | |
H18 | 0.579476 | 0.355776 | 1.324057 | 0.078* | |
C16 | 0.53052 (9) | 0.2979 (2) | 1.09115 (11) | 0.0509 (4) | |
C7 | 0.17640 (11) | −0.0857 (3) | 0.48974 (13) | 0.0650 (5) | |
C17 | 0.52695 (10) | 0.2888 (2) | 1.19000 (12) | 0.0589 (5) | |
H17 | 0.487572 | 0.232436 | 1.210329 | 0.071* | |
O1 | 0.16903 (8) | −0.0470 (2) | 0.39147 (9) | 0.0815 (4) | |
C20 | 0.64377 (11) | 0.4571 (3) | 1.13081 (13) | 0.0683 (5) | |
H20 | 0.683089 | 0.514503 | 1.110943 | 0.082* | |
C14 | 0.34729 (9) | 0.1066 (2) | 0.97367 (11) | 0.0524 (4) | |
C1 | 0.13186 (10) | 0.1053 (3) | 0.35731 (13) | 0.0658 (5) | |
C10 | 0.19555 (10) | −0.1858 (3) | 0.68345 (14) | 0.0678 (5) | |
H10 | 0.202440 | −0.221053 | 0.748315 | 0.081* | |
C21 | 0.59024 (10) | 0.3814 (3) | 1.06281 (12) | 0.0610 (5) | |
H21 | 0.593940 | 0.385998 | 0.997084 | 0.073* | |
C8 | 0.12811 (11) | −0.1982 (3) | 0.52212 (15) | 0.0755 (6) | |
F1 | 0.07018 (8) | −0.2577 (2) | 0.45739 (10) | 0.1157 (5) | |
C9 | 0.13740 (12) | −0.2507 (3) | 0.61757 (16) | 0.0828 (6) | |
H9 | 0.104704 | −0.329362 | 0.637526 | 0.099* | |
C6 | 0.09068 (11) | 0.2008 (3) | 0.41052 (15) | 0.0756 (6) | |
H6 | 0.086151 | 0.166959 | 0.473327 | 0.091* | |
C4 | 0.06114 (16) | 0.3971 (4) | 0.2770 (2) | 0.1119 (9) | |
H4 | 0.036467 | 0.495305 | 0.249363 | 0.134* | |
C2 | 0.13978 (13) | 0.1537 (3) | 0.26449 (15) | 0.0849 (7) | |
H2 | 0.169036 | 0.089353 | 0.229477 | 0.102* | |
C3 | 0.10316 (18) | 0.3001 (4) | 0.2249 (2) | 0.1101 (9) | |
H3 | 0.107028 | 0.333605 | 0.161870 | 0.132* | |
C5 | 0.05585 (13) | 0.3485 (4) | 0.3694 (2) | 0.0958 (7) | |
H5 | 0.028365 | 0.415792 | 0.405426 | 0.115* | |
S1 | 0.26986 (3) | 0.05350 (8) | 1.01272 (3) | 0.07183 (19) |
U11 | U22 | U33 | U12 | U13 | U23 | |
N2 | 0.0605 (9) | 0.0788 (10) | 0.0420 (8) | −0.0123 (8) | 0.0097 (7) | −0.0069 (7) |
O2 | 0.0662 (8) | 0.0981 (10) | 0.0499 (7) | −0.0220 (7) | 0.0097 (6) | 0.0030 (7) |
N1 | 0.0659 (10) | 0.0808 (11) | 0.0435 (8) | −0.0197 (8) | 0.0090 (7) | −0.0051 (8) |
C15 | 0.0558 (10) | 0.0637 (11) | 0.0457 (9) | 0.0021 (8) | 0.0147 (8) | −0.0033 (8) |
N3 | 0.0539 (8) | 0.0702 (10) | 0.0381 (7) | −0.0016 (7) | 0.0100 (6) | −0.0055 (7) |
C19 | 0.0562 (11) | 0.0809 (13) | 0.0525 (10) | −0.0022 (10) | 0.0053 (8) | −0.0055 (10) |
C13 | 0.0590 (11) | 0.0618 (11) | 0.0425 (9) | −0.0026 (9) | 0.0076 (8) | 0.0010 (8) |
C11 | 0.0566 (10) | 0.0612 (11) | 0.0457 (9) | −0.0014 (9) | 0.0070 (8) | −0.0016 (8) |
O3 | 0.0684 (8) | 0.1078 (11) | 0.0495 (7) | −0.0126 (7) | 0.0229 (6) | −0.0201 (7) |
C12 | 0.0637 (11) | 0.0683 (12) | 0.0444 (9) | −0.0035 (9) | 0.0107 (8) | −0.0032 (8) |
C18 | 0.0610 (11) | 0.0937 (14) | 0.0408 (9) | 0.0028 (10) | 0.0095 (8) | −0.0040 (9) |
C16 | 0.0512 (10) | 0.0590 (10) | 0.0433 (8) | 0.0056 (8) | 0.0104 (7) | −0.0012 (8) |
C7 | 0.0693 (12) | 0.0775 (13) | 0.0450 (10) | 0.0071 (10) | 0.0012 (9) | −0.0073 (9) |
C17 | 0.0540 (10) | 0.0781 (12) | 0.0467 (9) | −0.0011 (9) | 0.0149 (8) | −0.0006 (9) |
O1 | 0.0998 (11) | 0.0991 (11) | 0.0421 (7) | 0.0170 (9) | 0.0026 (7) | −0.0105 (7) |
C20 | 0.0595 (11) | 0.0891 (14) | 0.0576 (11) | −0.0121 (10) | 0.0136 (9) | 0.0041 (10) |
C14 | 0.0585 (11) | 0.0573 (10) | 0.0409 (8) | 0.0019 (8) | 0.0076 (8) | 0.0015 (8) |
C1 | 0.0568 (11) | 0.0850 (14) | 0.0496 (10) | −0.0092 (10) | −0.0068 (9) | −0.0020 (10) |
C10 | 0.0663 (12) | 0.0775 (13) | 0.0573 (11) | −0.0110 (10) | 0.0048 (9) | 0.0084 (10) |
C21 | 0.0609 (11) | 0.0792 (13) | 0.0443 (9) | −0.0033 (10) | 0.0134 (8) | 0.0014 (9) |
C8 | 0.0648 (13) | 0.0863 (15) | 0.0666 (13) | −0.0101 (11) | −0.0126 (10) | −0.0100 (11) |
F1 | 0.0972 (10) | 0.1390 (12) | 0.0957 (9) | −0.0334 (9) | −0.0246 (8) | −0.0135 (9) |
C9 | 0.0714 (13) | 0.0906 (15) | 0.0824 (15) | −0.0234 (12) | 0.0023 (11) | 0.0080 (13) |
C6 | 0.0658 (13) | 0.0965 (17) | 0.0625 (12) | 0.0016 (11) | 0.0058 (10) | −0.0011 (12) |
C4 | 0.101 (2) | 0.112 (2) | 0.116 (2) | 0.0046 (17) | 0.0013 (18) | 0.034 (2) |
C2 | 0.0881 (16) | 0.1073 (18) | 0.0569 (12) | −0.0178 (14) | 0.0063 (11) | −0.0009 (13) |
C3 | 0.128 (2) | 0.122 (2) | 0.0745 (16) | −0.0238 (19) | 0.0032 (16) | 0.0288 (17) |
C5 | 0.0718 (15) | 0.1026 (19) | 0.111 (2) | 0.0045 (14) | 0.0110 (14) | 0.0038 (16) |
S1 | 0.0630 (3) | 0.1025 (4) | 0.0515 (3) | −0.0143 (3) | 0.0141 (2) | −0.0031 (3) |
N2—C14 | 1.3242 (19) | C7—O1 | 1.383 (2) |
N2—N1 | 1.3718 (19) | C17—H17 | 0.9300 |
N2—H2N | 0.8600 | O1—C1 | 1.399 (2) |
O2—C13 | 1.220 (2) | C20—C21 | 1.370 (3) |
N1—C13 | 1.350 (2) | C20—H20 | 0.9300 |
N1—H1 | 0.8600 | C14—S1 | 1.6617 (17) |
C15—O3 | 1.2272 (18) | C1—C6 | 1.364 (3) |
C15—N3 | 1.379 (2) | C1—C2 | 1.377 (3) |
C15—C16 | 1.478 (2) | C10—C9 | 1.374 (3) |
N3—C14 | 1.389 (2) | C10—H10 | 0.9300 |
N3—H3N | 0.8600 | C21—H21 | 0.9300 |
C19—C18 | 1.370 (3) | C8—F1 | 1.349 (2) |
C19—C20 | 1.381 (2) | C8—C9 | 1.371 (3) |
C19—H19 | 0.9300 | C9—H9 | 0.9300 |
C13—C11 | 1.488 (2) | C6—C5 | 1.380 (3) |
C11—C12 | 1.386 (2) | C6—H6 | 0.9300 |
C11—C10 | 1.387 (2) | C4—C5 | 1.360 (4) |
C12—C7 | 1.379 (3) | C4—C3 | 1.370 (4) |
C12—H12 | 0.9300 | C4—H4 | 0.9300 |
C18—C17 | 1.381 (2) | C2—C3 | 1.378 (4) |
C18—H18 | 0.9300 | C2—H2 | 0.9300 |
C16—C21 | 1.389 (2) | C3—H3 | 0.9300 |
C16—C17 | 1.391 (2) | C5—H5 | 0.9300 |
C7—C8 | 1.372 (3) | ||
C14—N2—N1 | 120.44 (14) | C21—C20—C19 | 120.23 (17) |
C14—N2—H2N | 119.8 | C21—C20—H20 | 119.9 |
N1—N2—H2N | 119.8 | C19—C20—H20 | 119.9 |
C13—N1—N2 | 118.79 (14) | N2—C14—N3 | 115.25 (14) |
C13—N1—H1 | 120.6 | N2—C14—S1 | 122.85 (13) |
N2—N1—H1 | 120.6 | N3—C14—S1 | 121.90 (12) |
O3—C15—N3 | 120.99 (16) | C6—C1—C2 | 121.6 (2) |
O3—C15—C16 | 121.44 (15) | C6—C1—O1 | 123.55 (18) |
N3—C15—C16 | 117.57 (13) | C2—C1—O1 | 114.8 (2) |
C15—N3—C14 | 127.02 (13) | C9—C10—C11 | 120.14 (18) |
C15—N3—H3N | 116.5 | C9—C10—H10 | 119.9 |
C14—N3—H3N | 116.5 | C11—C10—H10 | 119.9 |
C18—C19—C20 | 119.86 (17) | C20—C21—C16 | 120.58 (16) |
C18—C19—H19 | 120.1 | C20—C21—H21 | 119.7 |
C20—C19—H19 | 120.1 | C16—C21—H21 | 119.7 |
O2—C13—N1 | 120.86 (16) | F1—C8—C9 | 119.7 (2) |
O2—C13—C11 | 123.81 (15) | F1—C8—C7 | 118.42 (19) |
N1—C13—C11 | 115.33 (15) | C9—C8—C7 | 121.84 (18) |
C12—C11—C10 | 119.51 (17) | C8—C9—C10 | 119.28 (19) |
C12—C11—C13 | 116.91 (16) | C8—C9—H9 | 120.4 |
C10—C11—C13 | 123.57 (16) | C10—C9—H9 | 120.4 |
C7—C12—C11 | 120.40 (18) | C1—C6—C5 | 118.7 (2) |
C7—C12—H12 | 119.8 | C1—C6—H6 | 120.6 |
C11—C12—H12 | 119.8 | C5—C6—H6 | 120.6 |
C19—C18—C17 | 120.41 (16) | C5—C4—C3 | 119.4 (3) |
C19—C18—H18 | 119.8 | C5—C4—H4 | 120.3 |
C17—C18—H18 | 119.8 | C3—C4—H4 | 120.3 |
C21—C16—C17 | 118.81 (16) | C1—C2—C3 | 118.1 (2) |
C21—C16—C15 | 117.16 (14) | C1—C2—H2 | 120.9 |
C17—C16—C15 | 124.01 (15) | C3—C2—H2 | 120.9 |
C8—C7—C12 | 118.78 (17) | C4—C3—C2 | 121.1 (2) |
C8—C7—O1 | 120.31 (18) | C4—C3—H3 | 119.4 |
C12—C7—O1 | 120.81 (18) | C2—C3—H3 | 119.4 |
C18—C17—C16 | 120.09 (16) | C4—C5—C6 | 121.0 (3) |
C18—C17—H17 | 120.0 | C4—C5—H5 | 119.5 |
C16—C17—H17 | 120.0 | C6—C5—H5 | 119.5 |
C7—O1—C1 | 118.30 (15) | ||
C14—N2—N1—C13 | 163.27 (16) | N1—N2—C14—S1 | −0.5 (2) |
O3—C15—N3—C14 | 3.4 (3) | C15—N3—C14—N2 | −7.4 (2) |
C16—C15—N3—C14 | −177.17 (15) | C15—N3—C14—S1 | 173.17 (14) |
N2—N1—C13—O2 | 1.4 (3) | C7—O1—C1—C6 | −12.8 (3) |
N2—N1—C13—C11 | −178.11 (15) | C7—O1—C1—C2 | 167.18 (18) |
O2—C13—C11—C12 | −15.9 (3) | C12—C11—C10—C9 | −1.9 (3) |
N1—C13—C11—C12 | 163.59 (16) | C13—C11—C10—C9 | 177.23 (19) |
O2—C13—C11—C10 | 164.89 (19) | C19—C20—C21—C16 | 1.1 (3) |
N1—C13—C11—C10 | −15.6 (3) | C17—C16—C21—C20 | −1.5 (3) |
C10—C11—C12—C7 | 1.7 (3) | C15—C16—C21—C20 | 179.92 (17) |
C13—C11—C12—C7 | −177.53 (17) | C12—C7—C8—F1 | 178.13 (18) |
C20—C19—C18—C17 | −1.2 (3) | O1—C7—C8—F1 | −5.5 (3) |
O3—C15—C16—C21 | 19.2 (3) | C12—C7—C8—C9 | −1.9 (3) |
N3—C15—C16—C21 | −160.26 (15) | O1—C7—C8—C9 | 174.4 (2) |
O3—C15—C16—C17 | −159.26 (18) | F1—C8—C9—C10 | −178.4 (2) |
N3—C15—C16—C17 | 21.3 (3) | C7—C8—C9—C10 | 1.7 (4) |
C11—C12—C7—C8 | 0.2 (3) | C11—C10—C9—C8 | 0.3 (3) |
C11—C12—C7—O1 | −176.13 (16) | C2—C1—C6—C5 | 0.5 (3) |
C19—C18—C17—C16 | 0.8 (3) | O1—C1—C6—C5 | −179.55 (18) |
C21—C16—C17—C18 | 0.6 (3) | C6—C1—C2—C3 | −1.7 (3) |
C15—C16—C17—C18 | 179.02 (17) | O1—C1—C2—C3 | 178.36 (19) |
C8—C7—O1—C1 | 97.3 (2) | C5—C4—C3—C2 | 0.4 (4) |
C12—C7—O1—C1 | −86.4 (2) | C1—C2—C3—C4 | 1.3 (4) |
C18—C19—C20—C21 | 0.3 (3) | C3—C4—C5—C6 | −1.6 (4) |
N1—N2—C14—N3 | −179.95 (15) | C1—C6—C5—C4 | 1.2 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···O3 | 0.86 | 1.88 | 2.555 (2) | 135 |
C18—H18···O3i | 0.93 | 2.45 | 3.218 (2) | 141 |
N3—H3N···O2i | 0.86 | 2.28 | 3.067 (2) | 152 |
C19—H19···S1ii | 0.93 | 2.98 | 3.778 (2) | 145 |
C20—H20···O1iii | 0.93 | 2.77 | 3.510 (3) | 138 |
Symmetry codes: (i) x, −y+1/2, z+1/2; (ii) −x+1, y+1/2, −z+5/2; (iii) −x+1, y+1/2, −z+3/2. |
C22H18FN3O4S | F(000) = 1824 |
Mr = 439.45 | Dx = 1.412 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
a = 47.298 (3) Å | Cell parameters from 9864 reflections |
b = 4.8054 (3) Å | θ = 2.3–21.0° |
c = 18.4939 (10) Å | µ = 0.20 mm−1 |
β = 100.429 (6)° | T = 298 K |
V = 4134.0 (4) Å3 | Plates, colorless |
Z = 8 | 0.25 × 0.17 × 0.10 mm |
Bruker APEXII CCD diffractometer | 1751 reflections with I > 2σ(I) |
φ and ω scans | Rint = 0.062 |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | θmax = 20.9°, θmin = 2.3° |
h = −46→38 | |
9841 measured reflections | k = −4→4 |
2188 independent reflections | l = −18→18 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.046 | H-atom parameters constrained |
wR(F2) = 0.122 | w = 1/[σ2(Fo2) + (0.0421P)2 + 7.4575P] where P = (Fo2 + 2Fc2)/3 |
S = 1.06 | (Δ/σ)max < 0.001 |
2188 reflections | Δρmax = 0.20 e Å−3 |
281 parameters | Δρmin = −0.16 e Å−3 |
0 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. |
x | y | z | Uiso*/Ueq | ||
S1 | 0.46155 (2) | 0.5067 (2) | 0.20257 (5) | 0.0570 (4) | |
O3 | 0.48485 (5) | −0.1767 (5) | 0.05581 (13) | 0.0564 (7) | |
O2 | 0.40193 (5) | −0.2064 (6) | 0.06269 (16) | 0.0693 (8) | |
N3 | 0.49466 (6) | 0.1596 (6) | 0.14319 (15) | 0.0476 (8) | |
H3N | 0.508458 | 0.244009 | 0.171425 | 0.057* | |
O4 | 0.61871 (6) | −0.3864 (7) | 0.15455 (17) | 0.0846 (9) | |
N2 | 0.44651 (6) | 0.1428 (6) | 0.09635 (17) | 0.0548 (8) | |
H2N | 0.450510 | 0.022383 | 0.065314 | 0.066* | |
F1 | 0.28801 (5) | 0.3872 (7) | 0.11032 (16) | 0.1091 (10) | |
C16 | 0.53329 (7) | −0.1387 (7) | 0.11626 (18) | 0.0431 (9) | |
N1 | 0.41856 (7) | 0.2174 (7) | 0.09631 (18) | 0.0636 (9) | |
H1 | 0.414588 | 0.386840 | 0.105555 | 0.076* | |
C13 | 0.39757 (8) | 0.0319 (9) | 0.0822 (2) | 0.0514 (10) | |
C11 | 0.36866 (8) | 0.1329 (8) | 0.0915 (2) | 0.0516 (10) | |
C14 | 0.46729 (8) | 0.2578 (7) | 0.14456 (18) | 0.0438 (9) | |
O1 | 0.29250 (6) | 0.0013 (8) | 0.01236 (19) | 0.1023 (12) | |
C21 | 0.54221 (8) | −0.3385 (8) | 0.0720 (2) | 0.0547 (10) | |
H21 | 0.528867 | −0.416711 | 0.034349 | 0.066* | |
C15 | 0.50265 (8) | −0.0588 (7) | 0.10183 (19) | 0.0441 (9) | |
C19 | 0.59029 (8) | −0.3153 (9) | 0.1383 (2) | 0.0576 (10) | |
C20 | 0.57034 (9) | −0.4253 (8) | 0.0820 (2) | 0.0603 (11) | |
H20 | 0.575894 | −0.558120 | 0.050737 | 0.072* | |
C17 | 0.55367 (9) | −0.0281 (8) | 0.1725 (2) | 0.0601 (11) | |
H17 | 0.548250 | 0.107588 | 0.203190 | 0.072* | |
C12 | 0.34481 (8) | 0.0178 (9) | 0.0473 (2) | 0.0638 (11) | |
H12 | 0.347192 | −0.119851 | 0.013548 | 0.077* | |
C18 | 0.58180 (9) | −0.1171 (10) | 0.1835 (2) | 0.0678 (12) | |
H18 | 0.595147 | −0.042543 | 0.221674 | 0.081* | |
C10 | 0.36521 (9) | 0.3291 (9) | 0.1432 (2) | 0.0663 (11) | |
H10 | 0.381175 | 0.405703 | 0.173417 | 0.080* | |
C7 | 0.31751 (9) | 0.1059 (10) | 0.0528 (2) | 0.0710 (12) | |
C8 | 0.31463 (9) | 0.3024 (10) | 0.1041 (3) | 0.0714 (12) | |
C9 | 0.33763 (11) | 0.4125 (10) | 0.1500 (3) | 0.0804 (14) | |
H9 | 0.334955 | 0.542017 | 0.185500 | 0.096* | |
C1 | 0.29108 (10) | −0.0900 (12) | −0.0591 (3) | 0.0824 (15) | |
C22 | 0.62909 (10) | −0.5808 (11) | 0.1078 (3) | 0.0994 (17) | |
H22A | 0.619623 | −0.756318 | 0.110327 | 0.149* | |
H22B | 0.649439 | −0.604267 | 0.123394 | 0.149* | |
H22C | 0.625228 | −0.513264 | 0.058166 | 0.149* | |
C2 | 0.27240 (11) | −0.3041 (13) | −0.0798 (3) | 0.1014 (17) | |
H2 | 0.262932 | −0.386389 | −0.045353 | 0.122* | |
C5 | 0.30114 (16) | −0.0664 (17) | −0.1801 (4) | 0.120 (2) | |
H5 | 0.310776 | 0.012404 | −0.214659 | 0.144* | |
C4 | 0.28168 (18) | −0.2822 (19) | −0.1998 (4) | 0.128 (3) | |
H4 | 0.278282 | −0.348577 | −0.247824 | 0.153* | |
C6 | 0.30602 (11) | 0.0306 (13) | −0.1075 (3) | 0.1001 (17) | |
H6 | 0.319071 | 0.173145 | −0.092598 | 0.120* | |
C3 | 0.26762 (14) | −0.3964 (17) | −0.1492 (5) | 0.131 (2) | |
H3 | 0.254553 | −0.539896 | −0.162868 | 0.157* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0682 (7) | 0.0481 (6) | 0.0553 (6) | 0.0142 (5) | 0.0124 (5) | −0.0014 (5) |
O3 | 0.0554 (16) | 0.0545 (17) | 0.0589 (16) | 0.0012 (14) | 0.0092 (13) | −0.0131 (14) |
O2 | 0.0576 (17) | 0.0393 (18) | 0.109 (2) | 0.0029 (14) | 0.0092 (15) | −0.0124 (16) |
N3 | 0.0473 (19) | 0.0409 (18) | 0.0556 (18) | −0.0008 (16) | 0.0119 (14) | −0.0034 (16) |
O4 | 0.0587 (19) | 0.094 (2) | 0.098 (2) | 0.0215 (18) | 0.0072 (16) | −0.0099 (19) |
N2 | 0.047 (2) | 0.0453 (19) | 0.074 (2) | 0.0059 (17) | 0.0161 (17) | −0.0125 (17) |
F1 | 0.0701 (18) | 0.141 (3) | 0.127 (2) | 0.0232 (18) | 0.0454 (15) | −0.0117 (19) |
C16 | 0.051 (2) | 0.036 (2) | 0.045 (2) | 0.0000 (19) | 0.0154 (19) | 0.0032 (18) |
N1 | 0.050 (2) | 0.036 (2) | 0.107 (3) | 0.0023 (18) | 0.0183 (18) | −0.0086 (18) |
C13 | 0.052 (3) | 0.039 (3) | 0.062 (2) | 0.003 (2) | 0.0088 (19) | 0.003 (2) |
C11 | 0.047 (2) | 0.044 (2) | 0.065 (2) | 0.001 (2) | 0.013 (2) | 0.002 (2) |
C14 | 0.050 (2) | 0.036 (2) | 0.047 (2) | 0.000 (2) | 0.0138 (19) | 0.0088 (18) |
O1 | 0.0447 (18) | 0.159 (3) | 0.104 (3) | −0.010 (2) | 0.0170 (17) | −0.039 (2) |
C21 | 0.055 (3) | 0.053 (3) | 0.058 (2) | 0.001 (2) | 0.0142 (19) | −0.006 (2) |
C15 | 0.052 (2) | 0.039 (2) | 0.045 (2) | 0.000 (2) | 0.018 (2) | 0.0040 (19) |
C19 | 0.053 (3) | 0.057 (3) | 0.063 (3) | 0.008 (2) | 0.010 (2) | 0.005 (2) |
C20 | 0.065 (3) | 0.052 (3) | 0.068 (3) | 0.007 (2) | 0.022 (2) | −0.011 (2) |
C17 | 0.063 (3) | 0.060 (3) | 0.059 (2) | 0.005 (2) | 0.015 (2) | −0.011 (2) |
C12 | 0.051 (3) | 0.064 (3) | 0.079 (3) | 0.003 (2) | 0.020 (2) | −0.014 (2) |
C18 | 0.056 (3) | 0.080 (3) | 0.064 (3) | 0.008 (2) | 0.002 (2) | −0.013 (2) |
C10 | 0.060 (3) | 0.066 (3) | 0.075 (3) | −0.004 (2) | 0.017 (2) | −0.010 (3) |
C7 | 0.059 (3) | 0.082 (3) | 0.074 (3) | 0.001 (3) | 0.017 (2) | −0.003 (3) |
C8 | 0.053 (3) | 0.084 (3) | 0.084 (3) | 0.012 (3) | 0.031 (3) | −0.001 (3) |
C9 | 0.089 (4) | 0.073 (3) | 0.088 (3) | 0.003 (3) | 0.039 (3) | −0.017 (3) |
C1 | 0.050 (3) | 0.104 (4) | 0.088 (4) | 0.017 (3) | 0.000 (3) | −0.024 (3) |
C22 | 0.077 (3) | 0.097 (4) | 0.129 (4) | 0.028 (3) | 0.031 (3) | −0.010 (4) |
C2 | 0.073 (3) | 0.121 (5) | 0.106 (4) | 0.014 (4) | 0.005 (3) | −0.023 (4) |
C5 | 0.118 (5) | 0.142 (6) | 0.099 (5) | 0.046 (5) | 0.015 (4) | 0.027 (5) |
C4 | 0.128 (6) | 0.151 (7) | 0.091 (5) | 0.056 (5) | −0.015 (5) | −0.018 (5) |
C6 | 0.082 (4) | 0.117 (5) | 0.101 (4) | 0.013 (3) | 0.015 (3) | 0.001 (4) |
C3 | 0.100 (5) | 0.158 (7) | 0.125 (6) | 0.022 (5) | −0.006 (5) | −0.039 (6) |
S1—C14 | 1.661 (4) | C20—H20 | 0.9300 |
O3—C15 | 1.223 (4) | C17—C18 | 1.377 (5) |
O2—C13 | 1.229 (4) | C17—H17 | 0.9300 |
N3—C14 | 1.383 (4) | C12—C7 | 1.380 (5) |
N3—C15 | 1.391 (4) | C12—H12 | 0.9300 |
N3—H3N | 0.8600 | C18—H18 | 0.9300 |
O4—C19 | 1.367 (4) | C10—C9 | 1.392 (6) |
O4—C22 | 1.419 (5) | C10—H10 | 0.9300 |
N2—C14 | 1.322 (4) | C7—C8 | 1.362 (6) |
N2—N1 | 1.369 (4) | C8—C9 | 1.360 (6) |
N2—H2N | 0.8600 | C9—H9 | 0.9300 |
F1—C8 | 1.348 (4) | C1—C2 | 1.365 (7) |
C16—C21 | 1.377 (5) | C1—C6 | 1.365 (7) |
C16—C17 | 1.390 (5) | C22—H22A | 0.9600 |
C16—C15 | 1.476 (5) | C22—H22B | 0.9600 |
N1—C13 | 1.325 (5) | C22—H22C | 0.9600 |
N1—H1 | 0.8600 | C2—C3 | 1.338 (8) |
C13—C11 | 1.490 (5) | C2—H2 | 0.9300 |
C11—C10 | 1.373 (5) | C5—C4 | 1.390 (9) |
C11—C12 | 1.383 (5) | C5—C6 | 1.401 (8) |
O1—C7 | 1.375 (5) | C5—H5 | 0.9300 |
O1—C1 | 1.383 (5) | C4—C3 | 1.359 (9) |
C21—C20 | 1.374 (5) | C4—H4 | 0.9300 |
C21—H21 | 0.9300 | C6—H6 | 0.9300 |
C19—C18 | 1.374 (5) | C3—H3 | 0.9300 |
C19—C20 | 1.378 (5) | ||
C14—N3—C15 | 128.0 (3) | C11—C12—H12 | 119.8 |
C14—N3—H3N | 116.0 | C19—C18—C17 | 120.5 (4) |
C15—N3—H3N | 116.0 | C19—C18—H18 | 119.8 |
C19—O4—C22 | 117.7 (3) | C17—C18—H18 | 119.8 |
C14—N2—N1 | 119.4 (3) | C11—C10—C9 | 119.4 (4) |
C14—N2—H2N | 120.3 | C11—C10—H10 | 120.3 |
N1—N2—H2N | 120.3 | C9—C10—H10 | 120.3 |
C21—C16—C17 | 117.8 (3) | C8—C7—O1 | 116.6 (4) |
C21—C16—C15 | 118.1 (3) | C8—C7—C12 | 118.5 (4) |
C17—C16—C15 | 124.1 (3) | O1—C7—C12 | 124.9 (4) |
C13—N1—N2 | 120.9 (3) | F1—C8—C9 | 118.9 (4) |
C13—N1—H1 | 119.6 | F1—C8—C7 | 118.8 (4) |
N2—N1—H1 | 119.6 | C9—C8—C7 | 122.3 (4) |
O2—C13—N1 | 121.7 (3) | C8—C9—C10 | 119.3 (4) |
O2—C13—C11 | 122.9 (4) | C8—C9—H9 | 120.4 |
N1—C13—C11 | 115.4 (4) | C10—C9—H9 | 120.4 |
C10—C11—C12 | 120.0 (4) | C2—C1—C6 | 121.5 (5) |
C10—C11—C13 | 122.1 (4) | C2—C1—O1 | 115.1 (5) |
C12—C11—C13 | 117.9 (4) | C6—C1—O1 | 123.4 (5) |
N2—C14—N3 | 115.4 (3) | O4—C22—H22A | 109.5 |
N2—C14—S1 | 123.2 (3) | O4—C22—H22B | 109.5 |
N3—C14—S1 | 121.4 (3) | H22A—C22—H22B | 109.5 |
C7—O1—C1 | 121.6 (4) | O4—C22—H22C | 109.5 |
C20—C21—C16 | 121.7 (4) | H22A—C22—H22C | 109.5 |
C20—C21—H21 | 119.2 | H22B—C22—H22C | 109.5 |
C16—C21—H21 | 119.2 | C3—C2—C1 | 120.4 (7) |
O3—C15—N3 | 120.7 (3) | C3—C2—H2 | 119.8 |
O3—C15—C16 | 122.3 (3) | C1—C2—H2 | 119.8 |
N3—C15—C16 | 116.9 (3) | C4—C5—C6 | 119.0 (7) |
O4—C19—C18 | 115.0 (4) | C4—C5—H5 | 120.5 |
O4—C19—C20 | 125.6 (4) | C6—C5—H5 | 120.5 |
C18—C19—C20 | 119.3 (4) | C3—C4—C5 | 120.3 (7) |
C21—C20—C19 | 119.9 (4) | C3—C4—H4 | 119.9 |
C21—C20—H20 | 120.0 | C5—C4—H4 | 119.9 |
C19—C20—H20 | 120.0 | C1—C6—C5 | 118.2 (6) |
C18—C17—C16 | 120.8 (4) | C1—C6—H6 | 120.9 |
C18—C17—H17 | 119.6 | C5—C6—H6 | 120.9 |
C16—C17—H17 | 119.6 | C2—C3—C4 | 120.6 (7) |
C7—C12—C11 | 120.5 (4) | C2—C3—H3 | 119.7 |
C7—C12—H12 | 119.8 | C4—C3—H3 | 119.7 |
C14—N2—N1—C13 | −143.5 (4) | C13—C11—C12—C7 | −179.2 (4) |
N2—N1—C13—O2 | −6.2 (6) | O4—C19—C18—C17 | 180.0 (4) |
N2—N1—C13—C11 | 173.9 (3) | C20—C19—C18—C17 | −0.2 (6) |
O2—C13—C11—C10 | 147.9 (4) | C16—C17—C18—C19 | 0.7 (6) |
N1—C13—C11—C10 | −32.2 (5) | C12—C11—C10—C9 | −0.6 (6) |
O2—C13—C11—C12 | −30.6 (5) | C13—C11—C10—C9 | −179.1 (4) |
N1—C13—C11—C12 | 149.3 (4) | C1—O1—C7—C8 | 149.6 (5) |
N1—N2—C14—N3 | 176.7 (3) | C1—O1—C7—C12 | −33.4 (7) |
N1—N2—C14—S1 | −4.1 (5) | C11—C12—C7—C8 | −1.8 (6) |
C15—N3—C14—N2 | −5.7 (5) | C11—C12—C7—O1 | −178.8 (4) |
C15—N3—C14—S1 | 175.2 (3) | O1—C7—C8—F1 | −2.0 (6) |
C17—C16—C21—C20 | −0.7 (5) | C12—C7—C8—F1 | −179.3 (4) |
C15—C16—C21—C20 | −179.7 (3) | O1—C7—C8—C9 | 176.8 (4) |
C14—N3—C15—O3 | 5.9 (5) | C12—C7—C8—C9 | −0.4 (7) |
C14—N3—C15—C16 | −174.1 (3) | F1—C8—C9—C10 | −179.1 (4) |
C21—C16—C15—O3 | 5.2 (5) | C7—C8—C9—C10 | 2.1 (7) |
C17—C16—C15—O3 | −173.8 (3) | C11—C10—C9—C8 | −1.5 (7) |
C21—C16—C15—N3 | −174.7 (3) | C7—O1—C1—C2 | 148.1 (4) |
C17—C16—C15—N3 | 6.3 (5) | C7—O1—C1—C6 | −34.9 (7) |
C22—O4—C19—C18 | −177.2 (4) | C6—C1—C2—C3 | −2.0 (8) |
C22—O4—C19—C20 | 3.0 (6) | O1—C1—C2—C3 | 175.1 (5) |
C16—C21—C20—C19 | 1.2 (6) | C6—C5—C4—C3 | 0.1 (9) |
O4—C19—C20—C21 | 179.1 (4) | C2—C1—C6—C5 | 1.7 (8) |
C18—C19—C20—C21 | −0.7 (6) | O1—C1—C6—C5 | −175.1 (4) |
C21—C16—C17—C18 | −0.2 (6) | C4—C5—C6—C1 | −0.7 (8) |
C15—C16—C17—C18 | 178.8 (3) | C1—C2—C3—C4 | 1.3 (9) |
C10—C11—C12—C7 | 2.3 (6) | C5—C4—C3—C2 | −0.4 (10) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···O3 | 0.86 | 1.92 | 2.589 (4) | 134 |
N3—H3N···S1i | 0.86 | 2.80 | 3.615 (3) | 159 |
C17—H17···S1i | 0.93 | 2.69 | 3.614 (4) | 174 |
N1—H1···O2ii | 0.86 | 2.15 | 2.915 (4) | 148 |
C21—H21···O3iii | 0.93 | 2.57 | 3.399 (4) | 148 |
Symmetry codes: (i) −x+1, y, −z+1/2; (ii) x, y+1, z; (iii) −x+1, −y−1, −z. |
Acknowledgements
The authors are thankful to the
of IISER Bhopal for research facilities and infrastructure.References
Acharya, P. T., Bhavsar, Z. A., Jethava, D., Patel, D. B. & Patel, H. D. (2021). J. Mol. Struct. 1226, 129268. CrossRef Google Scholar
Ameryckx, A., Thabault, L., Pochet, L., Leimanis, S., Poupaert, J. H., Wouters, J., Joris, B., Van Bambeke, F. & Frédérick, R. (2018). Eur. J. Med. Chem. 159, 324–338. CrossRef CAS PubMed Google Scholar
Bruker (2008). SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2012). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Campbell, M. J. M. (1975). Coord. Chem. Rev. 15, 279–319. CrossRef CAS Web of Science Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Gazieva, G. A. & Kravchenko, A. N. (2012). Russ. Chem. Rev. 81, 494–523. CrossRef CAS Google Scholar
Groom, C. R., Bruno, I. J., Lightfoot, M. P. & Ward, S. C. (2016). Acta Cryst. B72, 171–179. Web of Science CrossRef IUCr Journals Google Scholar
Macrae, C. F., Sovago, I., Cottrell, S. J., Galek, P. T. A., McCabe, P., Pidcock, E., Platings, M., Shields, G. P., Stevens, J. S., Towler, M. & Wood, P. A. (2020). J. Appl. Cryst. 53, 226–235. Web of Science CrossRef CAS IUCr Journals Google Scholar
Mohan, T. P. (2006). PhD Thesis, Mangalore University, Mangalore, Karnataka, India. Google Scholar
Paneth, A., Stączek, P., Plech, T., Strzelczyk, A., Dzitko, K., Wujec, M., Kuśmierz, E., Kosikowska, U., Grzegorczyk, A. & Paneth, P. (2016). J. Enzyme Inhib. Med. Chem. 31, 14–22. CrossRef CAS PubMed Google Scholar
Pramanik, S. & Chopra, D. (2020). J. Indian Inst. Sci. 100, 43–59. CrossRef Google Scholar
Qandil, A. M., Tumah, H. N. & Hassan, M. A. (2006). Acta. Pharm. Sci. 48, 95–107. CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Sheldrick, G. M. (2015). Acta Cryst. C71, 3–8. Web of Science CrossRef IUCr Journals Google Scholar
Siwek, A., Bielawska, A., Maciorkowska, E., Lepiarczyk, M., Bielawski, K., Trotsko, N. & Wujec, M. (2014). J. Enzyme Inhib. Med. Chem. 29, 243–248. CrossRef CAS PubMed Google Scholar
Spackman, M. A. & Jayatilaka, D. (2009). CrystEngComm, 11, 19–32. Web of Science CrossRef CAS Google Scholar
Spek, A. L. (2020). Acta Cryst. E76, 1–11. Web of Science CrossRef IUCr Journals Google Scholar
Turner, M. J., McKinnon, J. J., Wolff, S. K., Grimwood, D. J., Spackman, P. R., Jayatilaka, D. & Spackman, M. A. (2017). CrystalExplorer 17.5. University of Western Australia, Perth. Google Scholar
Yan, Y., Dai, L., Zhang, L., Zhong, S., Zhou, H., Wu, L. & Cai, L. (2018). Res. Chem. Intermed. 44, 3437–3454. CrossRef CAS Google Scholar
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