Crystal structure and Hirshfeld surface analysis of ethyl (3E)-5-(4-chloro­phen­yl)-3-{[(4-chloro­phen­yl)formamido]­imino}-7-methyl-2H,3H,5H-[1,3]thia­zolo[3,2-a]pyrimidine-6-carboxyl­ate

Mohamed, S.K.; Mague, J.T.; Akkurt, M.; Alfayomy, A.M.; Seri, S.M.A.; Abdel-Raheem, S.A.A.; Ul-Malik, M.A.A.

doi:10.1107/S205698902200603X

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CRYSTALLOGRAPHIC
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ISSN: 2056-9890

Volume 78| Part 8| August 2022| Pages 846-850

https://doi.org/10.1107/S205698902200603X

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Crystal structure and Hirshfeld surface analysis of ethyl (3E)-5-(4-chlorophenyl)-3-{[(4-chlorophenyl)formamido]imino}-7-methyl-2H,3H,5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate

Shaaban K. Mohamed,^a,^b Joel T. Mague,^c Mehmet Akkurt,^d Abdallah M. Alfayomy,^e Sahar M. Abou Seri,^f Shaban A. A. Abdel-Raheem ^g and Mokhtar A. Abd Ul-Malik ^h ^*

^aChemistry and Environmental Division, Manchester Metropolitan University, Manchester, M1 5GD, England, ^bChemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt, ^cDepartment of Chemistry, Tulane University, New Orleans, LA 70118, USA, ^dDepartment of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey, ^eDepartment of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut, 71524, Egypt, ^fDepartment of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, PO Box, 11562, Egypt, ^gSoil, Water, and Environment Research Institute, Agricultural Research Center, Giza, Egypt, and ^hChemistry Department, Faculty of Applied Science, Taiz University, Taiz, Yemen
^*Correspondence e-mail: mokh.amin@taiz.edu.ye

Edited by L. Van Meervelt, Katholieke Universiteit Leuven, Belgium (Received 26 May 2022; accepted 7 June 2022; online 26 July 2022)

In the title molecule, C₂₃H₂₀Cl₂N₄O₃S, the thiazole ring is planar while the pyrimidine unit fused to it adopts a screw-boat conformation. In the crystal, thick sheets parallel to the bc plane are formed by N—H⋯N, C—H⋯N and C—H⋯O hydrogen bonds together with π–π interactions between the formamido carbonyl groups and the thiazole rings. Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯H (30.9%), Cl⋯H/H⋯Cl (20.7%), C⋯H/H⋯C (16.8%) and O⋯H/H⋯O (11.4%) interactions.

Keywords: crystal structure; hydrogen bond; thiazole; pyrimidine; Hirshfeld surface analysis.

CCDC reference: 2177430

1. Chemical context

Several compounds bearing 1,3,4-oxadiazole have been reported to exhibit significant anticancer activities (Yadagiri et al., 2015 ; Valente et al., 2014 ; El-Din et al., 2015 ). On the other hand, pyrimidine-based compounds have shown significant activity against cancer and tumor cells (Tolba et al., 2022 ). Compounds combining the pharmacophores dihydropyrimidine and 1,3,4-oxadiazole have been prepared with the aim of developing potent anticancer agents (Ragab et al., 2017 ). The target hybrids have been synthesized through condensation of 6-methyl-4-aryl-1,2,3,4-tetrahydropyrimidine-2(1H)-thione derivatives and 2-(chloromethyl)-5-aryl-1,3,4-oxadiazole derivatives and screened for their in vitro cytotoxic activity against 60 cancer cell lines according to NCI (USA) protocols (Skehan et al., 1990 ). Unexpectedly, an intramolecular cyclization and ring opening of 1,3,4-oxadiazole has occurred and the title compound was chosen as an example of this series for further structural elucidation through X-ray crystallography.

2. Structural commentary

In the title compound, (Fig. 1), the thiazole ring is planar (r.m.s. deviation of the fitted atoms = 0.001 Å) and the C11–C16 and C18–C23 benzene rings are inclined to it by 88.95 (8) and 11.47 (7)°, respectively. The pyrimidine ring (C1/C2/C3/N1/C4/N2) exhibits a screw-boat conformation with puckering parameters (Cremer & Pople, 1975 ) of Q(2) = 0.2383 (15) Å and φ(2) = 188.4 (4)°. This ring is folded about the C1⋯N1 axis by 19.9 (1)°. The torsion angles about the bonds of the N′-methylideneformohydrazide link between the chlorophenyl ring and the 2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine ring system are: N2—C6=N3—N4 = −177.82 (12)°, C6=N3—N4—C17 = −171.54 (13)° and N3—N4—C17—C18 = −175.14 (12)°. The stereochemistry about the imine function C6=N3 is E.

Figure 1
The title molecule with the labelling scheme and 50% probability ellipsoids.

3. Supramolecular features and Hirshfeld surface analysis

In the crystal, a combination of N4—H4⋯N1 and C5—H5B⋯N1 hydrogen bonds (Table 1) form helical chains extending along the b-axis direction (Fig. 2). The chains are connected by C5—H5A⋯O3, C15—H15⋯O3 and C8—H8B⋯Cl1 hydrogen bonds as well as centrosymmetrically related π-interactions between the C17=O3 carbonyl groups and the thiazole rings [O3⋯Cg1ⁱ = 3.0299 (14) Å, C17⋯Cg1ⁱ = 3.4656 (16) Å, C17=O3⋯Cg1ⁱ = 100.48 (10)°; Table 2 and Fig. 3; Cg1 is the centroid of the thiazole ring, symmetry code: (i) 1 − x, 1 − y, 1 − z] into thick layers parallel to the bc plane (Fig. 4).

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N4—H4⋯N1ⁱ	0.89 (2)	2.16 (2)	3.0076 (18)	158 (2)
C5—H5A⋯O3ⁱⁱ	0.98 (2)	2.533 (19)	3.081 (2)	115.3 (14)
C5—H5B⋯N1ⁱ	0.98 (2)	2.57 (2)	3.453 (2)	150.1 (16)
C8—H8B⋯Cl1ⁱⁱⁱ	1.02 (2)	2.77 (2)	3.4430 (17)	123.1 (14)
C15—H15⋯O3^iv	0.95 (2)	2.54 (2)	3.1682 (19)	124.5 (17)
Symmetry codes: (i) $[-x+1, y-{\script{1\over 2}}, -z+{\script{3\over 2}}]$ ; (ii) ; (iii) $[x, -y+{\script{1\over 2}}, z-{\script{1\over 2}}]$ ; (iv) $[x, -y+{\script{1\over 2}}, z+{\script{1\over 2}}]$ .

Table 2
Summary of short interatomic contacts (Å) in the title compound

Contact	Distance	Symmetry operation
Cl1⋯H10B	2.96	x, −1 + y, z
H4⋯N1	2.16	1 − x, − $[{1\over 2}]$ + y, $[{3\over 2}]$ − z
H15⋯O3	2.54	x, $[{1\over 2}]$ − y, $[{1\over 2}]$ + z
H13⋯Cl2	2.91	1 − x, −y, 1 − z
H5A⋯O3	2.53	1 − x, 1 − y, 1 − z
H20⋯H9B	2.53	1 + x, $[{1\over 2}]$ − y, $[{1\over 2}]$ + z
H9A⋯H9A	2.43	−x, 1 − y, 1 − z

Figure 2
A portion of the hydrogen-bonded chain viewed along the c-axis direction. N—H⋯N and C—H⋯N hydrogen bonds are shown. H atoms not involved in these interactions have been omitted for clarity.

Figure 3
Detail of the C—H⋯O and C—H⋯Cl hydrogen bonds and the π-interactions down the b-axis. H atoms not involved in these interactions have been omitted for clarity.

Figure 4
Packing viewed along the a-axis direction with intermolecular interactions shown as in Fig. 2

A Hirshfeld surface analysis was performed using Crystal Explorer 17.5 (Turner et al., 2017 ) to visualize the intermolecular interactions. The Hirshfeld surface mapped over d_norm (Fig. 5) shows the expected bright-red spots near atoms N1, O3, H5A, H5B and H15 involved in the C—H⋯O and C—H⋯N hydrogen-bonding interactions (Table 1) and short contacts (Table 2). Analysis of the two-dimensional fingerprint plots (Fig. 6) reveals that H⋯H (30.9%), Cl⋯H/H⋯Cl (20.7%), C⋯H/H⋯C (16.8%) and O⋯H/H⋯O (11.4%) interactions make the greatest contributions to the surface contacts. The remaining contributions for the title compound are from N⋯H/H⋯N, S⋯H/H⋯S, S⋯C/C⋯S, N⋯C/C⋯N, S⋯N/N⋯S, C⋯C, Cl⋯O/O⋯Cl, O⋯C/C⋯O, N⋯N, Cl⋯Cl, S⋯O/O⋯S, O⋯N/N⋯O and Cl⋯C/C⋯Cl contacts, which are each less than 4.5% and have a negligible effect on the packing. The percentage contributions of all interactions are given in Table 3.

Table 3
Percentage contributions of interatomic contacts to the Hirshfeld surface for the title compound

Contact	Percentage contribution
H⋯H	30.9
Cl⋯H/H⋯Cl	20.7
C⋯H/H⋯C	16.8
O⋯H/H⋯O	11.4
N⋯H/H⋯N	4.5
S⋯H/H⋯S	3.4
S⋯C/C⋯S	2.9
N⋯C/C⋯N	1.4
S⋯N/N⋯S	1.4
C⋯C	2.8
Cl⋯O/O⋯Cl	0.9
O⋯C/C⋯O	0.9
N⋯N	0.8
Cl⋯Cl	0.4
S⋯O/O⋯S	0.3
O⋯N/N⋯O	0.2
Cl⋯C/C⋯Cl	0.1

Figure 5
(a) Front view and (b) back view of the three-dimensional Hirshfeld surface of the title compound plotted over d_norm in the range −0.4486 to +1.3171 a.u.

Figure 6
Two-dimensional fingerprint plots for the title compound, showing (a) all interactions, and delineated into (b) H⋯H, (c) Cl⋯H/H⋯Cl, (d) C⋯H/H⋯C and (e) O⋯H/H⋯O interactions. The d_i and d_e values are the closest internal and external distances (in Å) from given points on the Hirshfeld surface.

4. Database survey

A search of the Cambridge Structural Database (CSD Version 5.39; Groom et al., 2016 ) for similar structures with the 2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine ring system showed the three closest are those of rac-(2′′S*,2′R*,4′R*,5′′R*,)-ethyl 4′-methoxycarbonyl-5′′-(4-methoxyphenyl)-1′,7′′-dimethyl-2,3′′-dioxo-2′′,3′′-dihydroindoline-3-spiro-2′-pyrrolidine-3′-spiro-2′′-thiazolo[3,2-a]pyrimidine-6′′-carboxylate [CSD refcode PONWUL (I); Hou et al., 2009 ], 3-(4-fluorophenyl)-2-sulfanylidene-5-(trifluoromethyl)-2,3-dihydro[1,3]thiazolo[4,5-d]pyrimidin-7(6H)-one toluene solvate [WEGSUA (II); Becan et al., 2022 ] and 7-ethylamino-3-phenyl-5-(trifluoromethyl)[1,3]thiazolo[4,5-d]pyrimidine-2(3H)-thione [WEGTAH (III); Becan et al., 2022].

In compound (I), which crystallizes in the triclinic space group P $[\overline{1}]$ , the two spiro junctions link a planar 2-oxindole ring [with a mean deviation from the plane of 0.0319 (3) Å], a pyrrolidine ring in an envelope conformation and a thiazolo[3,2-a]pyrimidine system. Two molecules are connected into a dimer by two N—H⋯O hydrogen bonds, forming an R₂²(8) graph-set motif.

Compound (II) crystallizes as a hemi-solvate in the triclinic space group P $[\overline{1}]$ . The asymmetric unit is composed of one molecule in the lactim form and half of a toluene molecule. In the crystal structure of (II), the molecules are linked into a centrosymmetric dimer by N—H⋯O hydrogen bonds. Such dimers are further linked via rather weak C—H⋯S and C—H⋯F interactions. In addition, aromatic π–π stacking interactions are also observed.

Compound (III) crystallizes in the P2₁/n space group with one molecule in the asymmetric unit. Both the thiazolopyrimidine and the phenyl rings are flat and subtend a dihedral angle of 70.8 (1)° to each other. In the crystal of (III), N—H⋯S hydrogen bonds link the molecules into zigzag chains running along the b-axis direction. The interchain contacts are provided by weak C—H⋯S and C—H⋯F bonds while C—H⋯π and π–π interactions generate the three-dimensional network.

5. Synthesis and crystallization

A mixture of ethyl 4-(4-chlorophenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (2 mmol), 2-(chloromethyl)-5-(4-chlorophenyl)-1,3,4-oxadiazole (2 mmol), potassium iodide (2 mmol) and triethyl amine (2.5 mmol), was refluxed for 4h in absolute ethanol (20 mL). The reaction mixture was poured onto crushed ice (40 g) and acidified with acetic acid (2 mL). The deposited precipitate was filtered off, washed with cold water, dried and crystallized from a methanol/DMF mixture 4:1 (v/v).

Yield: 80%; melting point: 477–779 K; IR (KBr, ν_max/cm⁻¹) : 3402, 3174, 1708, 1693, 1651.¹H NMR (400 MHz, DMSO-d₆) δ 10.82 (s, 1H, NH), 7.85 (d, J = 8.3 Hz, 2H, Ar—H), 7.57 (d, J = 8.4 Hz, 2H, Ar—H), 7.41 (dd, J = 8.8, 8.4 Hz, 4H, Ar—H), 6.10 (s, 1H, C4—H), 4.46 (d, J = 17.4 Hz, 1H, S—CH₂), 4.36 (d, J = 17.4 Hz, 1H, S—CH₂), 4.03 (q, J = 5.2 Hz, 2H, CH₂—CH₃), 2.34 (s, 3H, C6—CH₃), 1.12 (t, J = 7.1 Hz, 3H, CH₂—CH₃). ¹³C NMR (100 MHz, DMSO-d₆) δ 165.02, 162.17, 153.72, 153.44, 139.52, 136.36, 132.78, 132.16, 129.82, 129.55, 128.41, 128.30, 105.37, 59.85, 54.69, 28.11, 22.66, 13.97. Analysis calculated for C₂₃H₂₀Cl₂N₄O₃S (503.40): C 54.88, H 4.00, N 11.13. Found: C 55.13, H 3.94, N 11.36.

6. Refinement details

Crystal data, data collection and structure refinement details are summarized in Table 4. Only the hydrogen atoms of the methyl group attached to C10 were included as riding contributions in idealized positions since independent refinement of them led to an unsatisfactory geometry for this methyl group. All the remaining C and N-bound hydrogen atoms were found in difference-Fourier maps and they were refined freely.

Table 4
Experimental details

Crystal data
Chemical formula	C₂₃H₂₀Cl₂N₄O₃S
M_r	503.39
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	150
a, b, c (Å)	14.8117 (18), 10.7086 (13), 15.1887 (19)
β (°)	112.417 (3)
V (Å³)	2227.1 (5)
Z	4
Radiation type	Cu Kα
μ (mm⁻¹)	3.80
Crystal size (mm)	0.21 × 0.18 × 0.08

Data collection
Diffractometer	Bruker D8 VENTURE PHOTON 100 CMOS
Absorption correction	Numerical (SADABS; Krause et al., 2015 )
T_min, T_max	0.59, 0.76
No. of measured, independent and observed [I > 2σ(I)] reflections	16958, 4497, 4000
R_int	0.031
(sin θ/λ)_max (Å⁻¹)	0.625

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.032, 0.082, 1.05
No. of reflections	4497
No. of parameters	367
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.23, −0.35
Computer programs: APEX3 and SAINT (Bruker, 2016 ), SHELXT (Sheldrick, 2015a ), SHELXL2018/1 (Sheldrick, 2015b ), ORTEP-3 for Windows (Farrugia, 2012 ) and PLATON (Spek, 2020 ).

Supporting information

CCDC reference: 2177430

Crystal structure: contains datablocks I, global. DOI: https://doi.org/10.1107/S205698902200603X/vm2265sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S205698902200603X/vm2265Isup2.hkl

Supporting information file. DOI: https://doi.org/10.1107/S205698902200603X/vm2265Isup3.cml

checkCIF report

Computing details top

Data collection: APEX3 (Bruker, 2016); cell refinement: SAINT (Bruker, 2016); data reduction: SAINT (Bruker, 2016); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2018/1 (Sheldrick, 2015b); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: PLATON (Spek, 2020).

Ethyl (3E)-5-(4-chlorophenyl)-3-{[(4-chlorophenyl)formamido]imino}-7-methyl-2H,3H,5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate top

Crystal data top

C₂₃H₂₀Cl₂N₄O₃S	F(000) = 1040
M_r = 503.39	D_x = 1.501 Mg m⁻³
Monoclinic, P2₁/c	Cu Kα radiation, λ = 1.54178 Å
a = 14.8117 (18) Å	Cell parameters from 9966 reflections
b = 10.7086 (13) Å	θ = 3.2–74.6°
c = 15.1887 (19) Å	µ = 3.80 mm⁻¹
β = 112.417 (3)°	T = 150 K
V = 2227.1 (5) Å³	Plate, pale yellow
Z = 4	0.21 × 0.18 × 0.08 mm

Data collection top

Bruker D8 VENTURE PHOTON 100 CMOS diffractometer	4497 independent reflections
Radiation source: INCOATEC IµS micro–focus source	4000 reflections with I > 2σ(I)
Mirror monochromator	R_int = 0.031
Detector resolution: 10.4167 pixels mm^-1	θ_max = 74.6°, θ_min = 3.2°
ω scans	h = −18→17
Absorption correction: numerical (SADABS; Krause et al., 2015)	k = −13→12
T_min = 0.59, T_max = 0.76	l = −18→18
16958 measured reflections

Refinement top

Refinement on F²	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.032	Hydrogen site location: mixed
wR(F²) = 0.082	H atoms treated by a mixture of independent and constrained refinement
S = 1.05	w = 1/[σ²(F_o²) + (0.0409P)² + 1.0281P] where P = (F_o² + 2F_c²)/3
4497 reflections	(Δ/σ)_max = 0.001
367 parameters	Δρ_max = 0.23 e Å⁻³
0 restraints	Δρ_min = −0.35 e Å⁻³

Special details top

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. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. The hydrogen atoms attached to C10 were included as riding contributions in idealized positions since independent refinement of them led to an unsatisfactory geometry for this methyl group.

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

	x	y	z	U_iso*/U_eq
Cl1	0.17142 (3)	0.13315 (4)	0.78029 (3)	0.03577 (12)
Cl2	0.88333 (3)	−0.06239 (4)	0.59045 (3)	0.03541 (12)
S1	0.54003 (3)	0.68437 (3)	0.77522 (3)	0.02275 (10)
O1	0.06386 (8)	0.72960 (11)	0.49406 (8)	0.0282 (3)
O2	0.12796 (7)	0.58575 (10)	0.42622 (7)	0.0214 (2)
O3	0.46040 (8)	0.25187 (11)	0.44901 (8)	0.0277 (3)
N1	0.35416 (9)	0.75804 (11)	0.71116 (9)	0.0191 (3)
N2	0.39614 (8)	0.58809 (11)	0.63452 (9)	0.0167 (2)
N3	0.45875 (9)	0.42363 (11)	0.57852 (9)	0.0182 (2)
N4	0.54188 (9)	0.35323 (11)	0.58917 (9)	0.0185 (3)
H4	0.5851 (16)	0.339 (2)	0.6478 (16)	0.034 (5)*
C1	0.29435 (10)	0.54883 (13)	0.58144 (10)	0.0164 (3)
H1	0.2883 (13)	0.5261 (17)	0.5176 (13)	0.020 (4)*
C2	0.22891 (10)	0.66068 (13)	0.57591 (10)	0.0174 (3)
C3	0.25829 (11)	0.75263 (14)	0.64191 (10)	0.0187 (3)
C4	0.41675 (10)	0.68010 (13)	0.70116 (10)	0.0173 (3)
C5	0.56960 (11)	0.55753 (14)	0.71172 (12)	0.0222 (3)
H5A	0.6126 (14)	0.5860 (18)	0.6802 (14)	0.026 (5)*
H5B	0.6020 (14)	0.490 (2)	0.7563 (14)	0.030 (5)*
C6	0.47481 (10)	0.51442 (13)	0.63687 (10)	0.0171 (3)
C7	0.13182 (10)	0.66442 (14)	0.49758 (10)	0.0187 (3)
C8	0.03585 (11)	0.58383 (16)	0.34410 (11)	0.0242 (3)
H8A	0.0046 (14)	0.6678 (18)	0.3345 (13)	0.025 (5)*
H8B	0.0558 (14)	0.5674 (18)	0.2876 (14)	0.031 (5)*
C9	−0.02993 (13)	0.48441 (18)	0.35603 (13)	0.0312 (4)
H9A	−0.0462 (16)	0.505 (2)	0.4146 (16)	0.046 (6)*
H9B	−0.0915 (16)	0.481 (2)	0.2994 (15)	0.036 (5)*
H9C	0.0007 (15)	0.402 (2)	0.3634 (15)	0.036 (5)*
C10	0.19597 (11)	0.85945 (15)	0.64967 (12)	0.0244 (3)
H10A	0.163647	0.898217	0.586985	0.037*
H10B	0.237071	0.921446	0.694614	0.037*
H10C	0.146532	0.828365	0.672479	0.037*
C11	0.26837 (10)	0.43898 (13)	0.63133 (11)	0.0173 (3)
C12	0.20906 (11)	0.34314 (14)	0.57860 (11)	0.0225 (3)
H12	0.1865 (15)	0.3439 (19)	0.5098 (15)	0.033 (5)*
C13	0.17835 (12)	0.24801 (15)	0.62368 (12)	0.0257 (3)
H13	0.1355 (16)	0.183 (2)	0.5870 (15)	0.038 (6)*
C14	0.21023 (11)	0.24912 (14)	0.72190 (12)	0.0237 (3)
C15	0.27240 (12)	0.34069 (15)	0.77649 (11)	0.0228 (3)
H15	0.2958 (14)	0.3367 (18)	0.8437 (15)	0.026 (5)*
C16	0.30021 (11)	0.43621 (14)	0.73052 (11)	0.0208 (3)
H16	0.3430 (14)	0.5015 (19)	0.7694 (14)	0.029 (5)*
C17	0.53321 (11)	0.26487 (14)	0.52138 (10)	0.0192 (3)
C18	0.62243 (11)	0.18586 (14)	0.54149 (10)	0.0195 (3)
C19	0.71484 (11)	0.22052 (15)	0.60544 (11)	0.0203 (3)
H19	0.7245 (15)	0.2983 (19)	0.6372 (14)	0.030 (5)*
C20	0.79527 (12)	0.14427 (15)	0.62055 (11)	0.0222 (3)
H20	0.8601 (14)	0.1693 (18)	0.6609 (14)	0.025 (5)*
C21	0.78269 (12)	0.03304 (15)	0.57072 (11)	0.0245 (3)
C22	0.69176 (13)	−0.00299 (16)	0.50590 (12)	0.0274 (3)
H22	0.6864 (15)	−0.080 (2)	0.4729 (15)	0.038 (6)*
C23	0.61184 (12)	0.07413 (15)	0.49123 (11)	0.0245 (3)
H23	0.5501 (15)	0.0493 (18)	0.4452 (15)	0.030 (5)*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cl1	0.0475 (3)	0.0231 (2)	0.0488 (3)	−0.00518 (16)	0.0318 (2)	0.00199 (17)
Cl2	0.0330 (2)	0.0397 (2)	0.0294 (2)	0.01712 (17)	0.00721 (18)	−0.00225 (17)
S1	0.01551 (18)	0.02385 (19)	0.02288 (19)	−0.00037 (13)	0.00060 (15)	−0.00508 (14)
O1	0.0180 (5)	0.0331 (6)	0.0285 (6)	0.0073 (4)	0.0032 (5)	−0.0054 (5)
O2	0.0141 (5)	0.0247 (5)	0.0197 (5)	0.0017 (4)	0.0002 (4)	−0.0039 (4)
O3	0.0221 (6)	0.0340 (6)	0.0211 (6)	0.0022 (5)	0.0016 (5)	−0.0051 (5)
N1	0.0173 (6)	0.0195 (6)	0.0184 (6)	−0.0006 (5)	0.0043 (5)	−0.0012 (5)
N2	0.0127 (6)	0.0167 (6)	0.0181 (6)	−0.0003 (4)	0.0030 (5)	−0.0006 (5)
N3	0.0155 (6)	0.0189 (6)	0.0192 (6)	0.0023 (5)	0.0053 (5)	0.0022 (5)
N4	0.0156 (6)	0.0200 (6)	0.0177 (6)	0.0037 (5)	0.0037 (5)	0.0006 (5)
C1	0.0124 (6)	0.0184 (7)	0.0155 (7)	−0.0002 (5)	0.0020 (5)	−0.0013 (5)
C2	0.0149 (7)	0.0178 (7)	0.0181 (7)	0.0008 (5)	0.0046 (6)	0.0012 (5)
C3	0.0174 (7)	0.0198 (7)	0.0180 (7)	0.0001 (5)	0.0058 (6)	0.0018 (5)
C4	0.0167 (7)	0.0171 (7)	0.0163 (7)	−0.0021 (5)	0.0044 (6)	0.0011 (5)
C5	0.0159 (7)	0.0218 (7)	0.0237 (8)	0.0003 (6)	0.0019 (6)	−0.0022 (6)
C6	0.0146 (6)	0.0171 (7)	0.0183 (7)	0.0005 (5)	0.0047 (6)	0.0038 (5)
C7	0.0170 (7)	0.0189 (7)	0.0187 (7)	−0.0001 (5)	0.0051 (6)	0.0008 (5)
C8	0.0169 (7)	0.0306 (8)	0.0187 (7)	0.0024 (6)	−0.0004 (6)	−0.0024 (6)
C9	0.0210 (8)	0.0382 (10)	0.0296 (9)	−0.0060 (7)	0.0042 (7)	−0.0050 (7)
C10	0.0213 (7)	0.0241 (8)	0.0245 (8)	0.0031 (6)	0.0050 (6)	−0.0044 (6)
C11	0.0137 (6)	0.0167 (7)	0.0208 (7)	0.0019 (5)	0.0056 (6)	0.0001 (5)
C12	0.0218 (7)	0.0212 (7)	0.0225 (8)	−0.0018 (6)	0.0063 (6)	−0.0025 (6)
C13	0.0248 (8)	0.0198 (7)	0.0323 (9)	−0.0051 (6)	0.0106 (7)	−0.0055 (6)
C14	0.0232 (8)	0.0183 (7)	0.0343 (9)	0.0008 (6)	0.0162 (7)	0.0017 (6)
C15	0.0242 (8)	0.0228 (7)	0.0220 (8)	0.0028 (6)	0.0096 (6)	0.0017 (6)
C16	0.0196 (7)	0.0196 (7)	0.0209 (7)	−0.0006 (6)	0.0052 (6)	−0.0012 (6)
C17	0.0196 (7)	0.0211 (7)	0.0166 (7)	−0.0011 (6)	0.0063 (6)	0.0017 (5)
C18	0.0207 (7)	0.0219 (7)	0.0162 (7)	0.0012 (6)	0.0076 (6)	0.0014 (5)
C19	0.0208 (7)	0.0217 (7)	0.0186 (7)	−0.0001 (6)	0.0078 (6)	0.0001 (6)
C20	0.0207 (7)	0.0259 (8)	0.0185 (7)	0.0011 (6)	0.0058 (6)	0.0029 (6)
C21	0.0267 (8)	0.0277 (8)	0.0199 (7)	0.0077 (6)	0.0097 (7)	0.0032 (6)
C22	0.0319 (9)	0.0262 (8)	0.0230 (8)	0.0042 (7)	0.0092 (7)	−0.0046 (6)
C23	0.0239 (8)	0.0266 (8)	0.0207 (8)	0.0003 (6)	0.0060 (7)	−0.0042 (6)

Geometric parameters (Å, º) top

Cl1—C14	1.7459 (16)	C8—H8B	1.02 (2)
Cl2—C21	1.7365 (16)	C9—H9A	1.03 (2)
S1—C4	1.7421 (15)	C9—H9B	0.99 (2)
S1—C5	1.8135 (16)	C9—H9C	0.98 (2)
O1—C7	1.2092 (18)	C10—H10A	0.9800
O2—C7	1.3566 (18)	C10—H10B	0.9800
O2—C8	1.4559 (18)	C10—H10C	0.9800
O3—C17	1.2193 (19)	C11—C12	1.389 (2)
N1—C4	1.2987 (19)	C11—C16	1.397 (2)
N1—C3	1.4097 (19)	C12—C13	1.397 (2)
N2—C4	1.3612 (19)	C12—H12	0.97 (2)
N2—C6	1.3963 (18)	C13—C14	1.382 (2)
N2—C1	1.4740 (17)	C13—H13	0.96 (2)
N3—C6	1.2754 (19)	C14—C15	1.384 (2)
N3—N4	1.3995 (17)	C15—C16	1.387 (2)
N4—C17	1.3680 (19)	C15—H15	0.95 (2)
N4—H4	0.89 (2)	C16—H16	0.98 (2)
C1—C2	1.5228 (19)	C17—C18	1.499 (2)
C1—C11	1.526 (2)	C18—C19	1.393 (2)
C1—H1	0.970 (18)	C18—C23	1.396 (2)
C2—C3	1.353 (2)	C19—C20	1.389 (2)
C2—C7	1.477 (2)	C19—H19	0.95 (2)
C3—C10	1.503 (2)	C20—C21	1.385 (2)
C5—C6	1.503 (2)	C20—H20	0.96 (2)
C5—H5A	0.98 (2)	C21—C22	1.386 (2)
C5—H5B	0.98 (2)	C22—C23	1.390 (2)
C8—C9	1.500 (2)	C22—H22	0.95 (2)
C8—H8A	1.00 (2)	C23—H23	0.95 (2)

C4—S1—C5	92.48 (7)	H9A—C9—H9C	110.0 (18)
C7—O2—C8	115.69 (11)	H9B—C9—H9C	107.6 (17)
C4—N1—C3	116.56 (12)	C3—C10—H10A	109.5
C4—N2—C6	116.21 (12)	C3—C10—H10B	109.5
C4—N2—C1	120.38 (12)	H10A—C10—H10B	109.5
C6—N2—C1	121.49 (12)	C3—C10—H10C	109.5
C6—N3—N4	114.05 (12)	H10A—C10—H10C	109.5
C17—N4—N3	117.37 (12)	H10B—C10—H10C	109.5
C17—N4—H4	117.6 (14)	C12—C11—C16	119.03 (14)
N3—N4—H4	118.2 (13)	C12—C11—C1	120.47 (13)
N2—C1—C2	107.61 (11)	C16—C11—C1	120.43 (13)
N2—C1—C11	110.33 (11)	C11—C12—C13	120.58 (15)
C2—C1—C11	110.98 (11)	C11—C12—H12	119.8 (12)
N2—C1—H1	107.7 (10)	C13—C12—H12	119.5 (12)
C2—C1—H1	109.1 (11)	C14—C13—C12	118.79 (15)
C11—C1—H1	111.0 (11)	C14—C13—H13	120.6 (13)
C3—C2—C7	121.09 (13)	C12—C13—H13	120.6 (13)
C3—C2—C1	120.89 (13)	C13—C14—C15	121.88 (15)
C7—C2—C1	118.01 (12)	C13—C14—Cl1	119.93 (12)
C2—C3—N1	122.05 (13)	C15—C14—Cl1	118.19 (13)
C2—C3—C10	125.34 (14)	C14—C15—C16	118.59 (15)
N1—C3—C10	112.60 (13)	C14—C15—H15	120.0 (12)
N1—C4—N2	125.77 (13)	C16—C15—H15	121.4 (12)
N1—C4—S1	121.79 (11)	C15—C16—C11	121.05 (14)
N2—C4—S1	112.44 (10)	C15—C16—H16	118.2 (12)
C6—C5—S1	106.67 (10)	C11—C16—H16	120.7 (12)
C6—C5—H5A	108.6 (11)	O3—C17—N4	123.67 (14)
S1—C5—H5A	111.1 (11)	O3—C17—C18	121.81 (14)
C6—C5—H5B	111.6 (12)	N4—C17—C18	114.50 (13)
S1—C5—H5B	109.7 (12)	C19—C18—C23	119.04 (14)
H5A—C5—H5B	109.2 (16)	C19—C18—C17	123.16 (14)
N3—C6—N2	118.70 (13)	C23—C18—C17	117.77 (14)
N3—C6—C5	129.25 (13)	C20—C19—C18	120.74 (15)
N2—C6—C5	112.05 (12)	C20—C19—H19	118.7 (12)
O1—C7—O2	122.84 (13)	C18—C19—H19	120.5 (12)
O1—C7—C2	126.15 (14)	C21—C20—C19	119.14 (15)
O2—C7—C2	110.99 (12)	C21—C20—H20	118.8 (11)
O2—C8—C9	110.25 (13)	C19—C20—H20	121.9 (11)
O2—C8—H8A	110.1 (11)	C20—C21—C22	121.28 (15)
C9—C8—H8A	111.8 (11)	C20—C21—Cl2	118.95 (13)
O2—C8—H8B	104.2 (11)	C22—C21—Cl2	119.77 (13)
C9—C8—H8B	112.8 (11)	C21—C22—C23	119.08 (15)
H8A—C8—H8B	107.4 (16)	C21—C22—H22	118.6 (13)
C8—C9—H9A	109.4 (13)	C23—C22—H22	122.3 (13)
C8—C9—H9B	110.2 (12)	C22—C23—C18	120.70 (15)
H9A—C9—H9B	108.5 (17)	C22—C23—H23	118.2 (12)
C8—C9—H9C	111.2 (12)	C18—C23—H23	121.1 (12)

C6—N3—N4—C17	−171.54 (13)	C1—C2—C7—O1	162.79 (15)
C4—N2—C1—C2	28.34 (17)	C3—C2—C7—O2	162.47 (13)
C6—N2—C1—C2	−168.05 (12)	C1—C2—C7—O2	−18.75 (18)
C4—N2—C1—C11	−92.88 (15)	C7—O2—C8—C9	−91.73 (16)
C6—N2—C1—C11	70.74 (16)	N2—C1—C11—C12	−142.35 (14)
N2—C1—C2—C3	−25.06 (18)	C2—C1—C11—C12	98.47 (16)
C11—C1—C2—C3	95.74 (16)	N2—C1—C11—C16	40.59 (18)
N2—C1—C2—C7	156.14 (12)	C2—C1—C11—C16	−78.60 (16)
C11—C1—C2—C7	−83.05 (16)	C16—C11—C12—C13	2.6 (2)
C7—C2—C3—N1	−173.09 (13)	C1—C11—C12—C13	−174.50 (14)
C1—C2—C3—N1	8.2 (2)	C11—C12—C13—C14	−1.8 (2)
C7—C2—C3—C10	5.8 (2)	C12—C13—C14—C15	−0.8 (2)
C1—C2—C3—C10	−172.92 (14)	C12—C13—C14—Cl1	178.85 (12)
C4—N1—C3—C2	8.7 (2)	C13—C14—C15—C16	2.4 (2)
C4—N1—C3—C10	−170.30 (13)	Cl1—C14—C15—C16	−177.23 (12)
C3—N1—C4—N2	−5.4 (2)	C14—C15—C16—C11	−1.5 (2)
C3—N1—C4—S1	174.58 (10)	C12—C11—C16—C15	−0.9 (2)
C6—N2—C4—N1	−179.75 (14)	C1—C11—C16—C15	176.17 (13)
C1—N2—C4—N1	−15.3 (2)	N3—N4—C17—O3	6.5 (2)
C6—N2—C4—S1	0.26 (16)	N3—N4—C17—C18	−175.14 (12)
C1—N2—C4—S1	164.71 (10)	O3—C17—C18—C19	159.59 (15)
C5—S1—C4—N1	−178.09 (13)	N4—C17—C18—C19	−18.8 (2)
C5—S1—C4—N2	1.90 (11)	O3—C17—C18—C23	−18.5 (2)
C4—S1—C5—C6	−3.28 (11)	N4—C17—C18—C23	163.08 (13)
N4—N3—C6—N2	−177.82 (12)	C23—C18—C19—C20	−1.2 (2)
N4—N3—C6—C5	2.2 (2)	C17—C18—C19—C20	−179.26 (14)
C4—N2—C6—N3	177.12 (13)	C18—C19—C20—C21	0.3 (2)
C1—N2—C6—N3	12.9 (2)	C19—C20—C21—C22	0.4 (2)
C4—N2—C6—C5	−2.92 (18)	C19—C20—C21—Cl2	−179.59 (12)
C1—N2—C6—C5	−167.18 (13)	C20—C21—C22—C23	−0.3 (2)
S1—C5—C6—N3	−176.04 (13)	Cl2—C21—C22—C23	179.70 (13)
S1—C5—C6—N2	4.01 (15)	C21—C22—C23—C18	−0.6 (2)
C8—O2—C7—O1	−0.2 (2)	C19—C18—C23—C22	1.3 (2)
C8—O2—C7—C2	−178.77 (12)	C17—C18—C23—C22	179.48 (14)
C3—C2—C7—O1	−16.0 (2)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
N4—H4···N1ⁱ	0.89 (2)	2.16 (2)	3.0076 (18)	158 (2)
C5—H5A···O3ⁱⁱ	0.98 (2)	2.533 (19)	3.081 (2)	115.3 (14)
C5—H5B···N1ⁱ	0.98 (2)	2.57 (2)	3.453 (2)	150.1 (16)
C8—H8B···Cl1ⁱⁱⁱ	1.02 (2)	2.77 (2)	3.4430 (17)	123.1 (14)
C15—H15···O3^iv	0.95 (2)	2.54 (2)	3.1682 (19)	124.5 (17)

Symmetry codes: (i) −x+1, y−1/2, −z+3/2; (ii) −x+1, −y+1, −z+1; (iii) x, −y+1/2, z−1/2; (iv) x, −y+1/2, z+1/2.

Summary of short interatomic contacts (Å) in the title compound top

Contact	Distance	Symmetry operation
Cl1···H10B	2.96	x, -1 + y, z
H4···N1	2.16	1 - x, -1/2 + y, 3/2 - z
H15···O3	2.54	x, 1/2 - y, 1/2 + z
H13···Cl2	2.91	1 - x, -y, 1 - z
H5A···O3	2.53	1 - x, 1 - y, 1 - z
H20···H9B	2.53	1 + x, 1/2 - y, 1/2 + z
H9A···H9A	2.43	-x, 1 - y, 1 - z

Percentage contributions of interatomic contacts to the Hirshfeld surface for the title compound top

Contact	Percentage contribution
H···H	30.9
Cl···H/H···Cl	20.7
C···H/H···C	16.8
O···H/H···O	11.4
N···H/H···N	4.5
S···H/H···S	3.4
S···C/C···S	2.9
N···C/C···N	1.4
S···N/N···S	1.4
C···C	2.8
Cl···O/O···Cl	0.9
O···C/C···O	0.9
N···N	0.8
Cl···Cl	0.4
S···O/O···S	0.3
O···N/N···O	0.2
Cl···C/C···Cl	0.1

Acknowledgements

Author contributions are as follows: synthesis and organic chemistry parts preparation, AMA, SMAS, SAAAR; conceptualization and study guide, AMA, SKM, SMAS; financial support, MAAUM; crystal data production and validation, JTM; paper preparation and Hirshfeld study, MA, SKM.

Funding information

The support of NSF–MRI grant No. 1228232 for the purchase of the diffractometer and Tulane University for support of the Tulane Crystallography Laboratory are gratefully acknowledged.

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