organic compounds
(E)-2-[1-(3-Chloro-4-fluorophenyl)ethylidene]hydrazinecarbothioamide
aDepartment of Chemisry and Chemical Engineering, Jining University, 273155 Qufu, Shandong, People's Republic of China
*Correspondence e-mail: zhaixiurong@163.com
In the crystal of the title compound, C9H9ClFN3S, the molecules are interconnected by N—H⋯S and N—H⋯F hydrogen bonds. There are two different N—H⋯S hydrogen bond: the stronger one links molecules into infinite chains along the b axis with graph-set motif C(4), while the weaker N—H⋯S hydrogen bond combines with the previous one into an R22(8) network. Moreover, the chains are linked into layers parallel to (102) by weak N—H⋯F hydrogen bonds, which form an R22(22) ring motif. In addition, there are also weak π–π interactions between the benzene rings of adjacent molecules [centroid–centroid distance = 3.8997 (15) Å].
Related literature
For the chemistry and biological activity of thiosemicarbazones and their derivatives, see: Kasuga et al. (2001); Fonari et al. (2003); Amoedo et al. (2006); Mirsha et al. (2006); Kovala-Demertzi et al. 2007; Tarafder et al. (2008); Kizilcikli et al. (2004). For bond-length data, see: Allen et al. (1987). For graph-set theory, see: Etter et al. (1990).
Experimental
Crystal data
|
Refinement
|
Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810051093/fb2232sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810051093/fb2232Isup2.hkl
The title compound was synthesized by the reaction of hydrazinecarbothioamide (1 mmol, 91.1 mg) with 1-(3-chloro-4-fluoro-phenyl)-ethanone (1 mmol, 172.6 mg) in anhydrous ethanol (20 ml) under reflux conditions (353 K) for 6 h. The solvent was removed under reduced pressure and the solid product has been recrystallized from 10 ml of anhydrous ethanol. The yield was 82%. After six days, colourless block-shaped crystals with approx. size 0.2 × 0.1 × 0.1 mm were obtained.
All the H atoms could be discerned in the difference
However, they were situated into the idealized positions and refined within the riding atom approximation. The used constraints: Nprimary/secondary amine—Hprimary/secondary amine=0.86; Caryl—Haryl = 0.93; Cmethyl—Hmethyl = 0.96 Å. Uiso(Hprimary/secondary amine/aryl)=1.2 Ueq(Cprimary/secondary amine/aryl); Uiso(Hmethyl) =1.5Ueq(Cmethyl). A rotating group model was used for the of the positions of the methyl group. The minimal and the maximal residual electron densities were located at 0.85 and 0.70 Å from Cl1, respectively.Thiosemicarbazones constitute an important class of N, S donor ligands and have been investigated because of their chemistry and biological activities (Kasuga et al., 2001; Fonari et al., 2003; Kizilcikli et al., 2004; Amoedo et al., 2006; Mirsha et al., 2006; Kovala-Demertzi et al., 2007; Tarafder et al., 2008.) In order to search for new thiosemicarbazones, the title compound has been synthesized and its
is reported here.In the title molecule (Fig. 1), the bond lengths and angles are normal (Allen et al., 1987). In the
the molecules are linked by intermolecular N1—H1B···S1 hydrogen bonds, forming infinite chains with the graph-set motif C(4) (Tab. 1; Fig. 2; Etter et al., 1990). The involved atoms in this graph set motif are S1—C1—N1—H1B···S1i [the symmetry code i: 1 - x, 1/2 + y, 1/2 + -z]. Moreover, this interaction is strengthened by an almost parallel, a somewhat longer N2—H2···S1 hydrogen bond (Tab. 1; Fig. 3). Both these H bonds form a network R22(8). (The involved atoms in the network are C1i—N1i—H1Bi···S1ii—C1ii—N2ii—H2ii···S1i [the symmetry code i: 1 - x, 1/2 + y, 1/2 - z; ii: 2 - x, 1 - y, -z]). The chains are further linked into the layers by weak N—H···F hydrogen bonds. The N—H···F hydrogen bonds form a ring motif R22(22). [The involved atoms in the ring motif are N1—H1A···F1ii—C6ii—C5ii—C4ii—C3ii—C2ii—N3ii— N2ii—C1ii—N1ii—H1Aii···F1—C6—C5—C4—C3—C2—N3— N2—C1 (the symmetry code ii: 2 - x, 1 - y, -z)]. The layers are parallel to (1 0 2).In addition, there are also present weak π-electron—π-electron interactions between the benzene rings of the adjacent molecules (the centroid—the centroid distance equals to 3.8997 (15) Å; the symmetry code: 2 - x, 1 - y, -z). Moreover, there is also even a weaker π-electron—π-electron ring interaction between another benzene ring from the other side with the centroid-centroid distance equal to 4.3962 (15)Å (the symmetry code: 2 - x, -y, -z).
For the chemistry and biological activity of thiosemicarbazones and their derivatives, see: Kasuga et al. (2001); Fonari et al. (2003); Amoedo et al. (2006); Mirsha et al. (2006); Kovala-Demertzi et al. 2007; Tarafder et al. (2008); Kizilcikli et al. (2004). For bond-length data, see: Allen et al. (1987). For graph-set theory, see: Etter et al. (1990).
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C9H9ClFN3S | F(000) = 504 |
Mr = 245.70 | Dx = 1.482 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3779 reflections |
a = 7.8226 (10) Å | θ = 2.4–28.2° |
b = 8.2415 (12) Å | µ = 0.52 mm−1 |
c = 18.4582 (19) Å | T = 296 K |
β = 112.244 (4)° | Block, colorless |
V = 1101.4 (2) Å3 | 0.15 × 0.12 × 0.10 mm |
Z = 4 |
Bruker SMART APEXII CCD area-detector diffractometer | 2379 independent reflections |
Radiation source: fine-focus sealed tube | 2069 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.018 |
φ and ω scans | θmax = 27.0°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −9→5 |
Tmin = 0.926, Tmax = 0.950 | k = −9→10 |
6461 measured reflections | l = −20→23 |
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)] = 0.044 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.128 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0639P)2 + 0.6228P] where P = (Fo2 + 2Fc2)/3 |
2379 reflections | (Δ/σ)max < 0.001 |
137 parameters | Δρmax = 0.47 e Å−3 |
0 restraints | Δρmin = −0.47 e Å−3 |
C9H9ClFN3S | V = 1101.4 (2) Å3 |
Mr = 245.70 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.8226 (10) Å | µ = 0.52 mm−1 |
b = 8.2415 (12) Å | T = 296 K |
c = 18.4582 (19) Å | 0.15 × 0.12 × 0.10 mm |
β = 112.244 (4)° |
Bruker SMART APEXII CCD area-detector diffractometer | 2379 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2069 reflections with I > 2σ(I) |
Tmin = 0.926, Tmax = 0.950 | Rint = 0.018 |
6461 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.128 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.47 e Å−3 |
2379 reflections | Δρmin = −0.47 e Å−3 |
137 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s 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 > σ(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. |
x | y | z | Uiso*/Ueq | ||
Cl1 | 1.35789 (9) | 0.14464 (12) | 0.01370 (4) | 0.0767 (3) | |
S1 | 0.48566 (10) | 0.45517 (7) | 0.27045 (4) | 0.0579 (2) | |
F1 | 1.0826 (2) | 0.3057 (2) | −0.11859 (9) | 0.0675 (4) | |
N3 | 0.7524 (2) | 0.3397 (2) | 0.13785 (10) | 0.0416 (4) | |
N2 | 0.6771 (3) | 0.3277 (2) | 0.19401 (10) | 0.0412 (4) | |
H2 | 0.6824 | 0.2389 | 0.2192 | 0.049* | |
N1 | 0.6073 (3) | 0.5950 (2) | 0.17163 (12) | 0.0524 (5) | |
H1A | 0.6662 | 0.5951 | 0.1406 | 0.063* | |
H1B | 0.5564 | 0.6827 | 0.1790 | 0.063* | |
C3 | 0.9182 (3) | 0.2442 (2) | 0.06572 (12) | 0.0399 (4) | |
C2 | 0.8562 (3) | 0.2247 (2) | 0.13192 (12) | 0.0392 (4) | |
C8 | 0.8048 (3) | 0.3213 (3) | −0.00227 (13) | 0.0484 (5) | |
H8 | 0.6901 | 0.3597 | −0.0059 | 0.058* | |
C7 | 0.8590 (4) | 0.3422 (3) | −0.06482 (14) | 0.0525 (6) | |
H7 | 0.7820 | 0.3930 | −0.1105 | 0.063* | |
C6 | 1.0288 (3) | 0.2858 (3) | −0.05752 (13) | 0.0476 (5) | |
C5 | 1.1441 (3) | 0.2103 (3) | 0.00803 (14) | 0.0462 (5) | |
C4 | 1.0893 (3) | 0.1874 (3) | 0.07075 (13) | 0.0441 (5) | |
H4 | 1.1667 | 0.1345 | 0.1157 | 0.053* | |
C1 | 0.5950 (3) | 0.4612 (2) | 0.20768 (12) | 0.0394 (4) | |
C9 | 0.9087 (4) | 0.0788 (3) | 0.18293 (15) | 0.0576 (6) | |
H9A | 0.9228 | 0.1080 | 0.2352 | 0.086* | |
H9B | 1.0232 | 0.0362 | 0.1832 | 0.086* | |
H9C | 0.8139 | −0.0020 | 0.1632 | 0.086* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0482 (4) | 0.1172 (7) | 0.0786 (5) | 0.0102 (3) | 0.0398 (3) | −0.0058 (4) |
S1 | 0.0888 (5) | 0.0384 (3) | 0.0771 (4) | 0.0073 (3) | 0.0662 (4) | 0.0041 (2) |
F1 | 0.0798 (10) | 0.0817 (10) | 0.0629 (9) | −0.0066 (8) | 0.0519 (8) | 0.0007 (8) |
N3 | 0.0465 (10) | 0.0413 (9) | 0.0478 (9) | 0.0002 (7) | 0.0301 (8) | −0.0025 (7) |
N2 | 0.0518 (10) | 0.0363 (8) | 0.0485 (9) | 0.0031 (7) | 0.0336 (8) | 0.0005 (7) |
N1 | 0.0665 (12) | 0.0402 (9) | 0.0728 (13) | 0.0084 (9) | 0.0515 (11) | 0.0074 (9) |
C3 | 0.0403 (10) | 0.0401 (10) | 0.0458 (10) | −0.0019 (8) | 0.0235 (9) | −0.0053 (8) |
C2 | 0.0367 (10) | 0.0430 (10) | 0.0430 (10) | −0.0013 (8) | 0.0210 (8) | −0.0059 (8) |
C8 | 0.0451 (11) | 0.0575 (13) | 0.0495 (12) | 0.0048 (10) | 0.0260 (10) | 0.0009 (10) |
C7 | 0.0553 (13) | 0.0600 (14) | 0.0465 (12) | 0.0028 (11) | 0.0244 (10) | 0.0039 (10) |
C6 | 0.0557 (13) | 0.0503 (12) | 0.0493 (12) | −0.0102 (10) | 0.0340 (10) | −0.0075 (9) |
C5 | 0.0403 (11) | 0.0521 (12) | 0.0551 (12) | −0.0047 (9) | 0.0282 (10) | −0.0112 (10) |
C4 | 0.0407 (11) | 0.0513 (12) | 0.0455 (11) | 0.0016 (9) | 0.0220 (9) | −0.0036 (9) |
C1 | 0.0415 (10) | 0.0389 (10) | 0.0457 (10) | 0.0004 (8) | 0.0255 (9) | −0.0017 (8) |
C9 | 0.0665 (15) | 0.0605 (14) | 0.0584 (14) | 0.0217 (12) | 0.0379 (12) | 0.0113 (11) |
Cl1—C5 | 1.723 (2) | C3—C2 | 1.484 (3) |
S1—C1 | 1.681 (2) | C2—C9 | 1.486 (3) |
F1—C6 | 1.354 (2) | C8—C7 | 1.383 (3) |
N3—C2 | 1.279 (3) | C8—H8 | 0.9300 |
N3—N2 | 1.376 (2) | C7—C6 | 1.365 (3) |
N2—C1 | 1.345 (2) | C7—H7 | 0.9300 |
N2—H2 | 0.8600 | C6—C5 | 1.356 (3) |
N1—C1 | 1.310 (3) | C5—C4 | 1.391 (3) |
N1—H1A | 0.8600 | C4—H4 | 0.9300 |
N1—H1B | 0.8600 | C9—H9A | 0.9600 |
C3—C8 | 1.386 (3) | C9—H9B | 0.9600 |
C3—C4 | 1.387 (3) | C9—H9C | 0.9600 |
C2—N3—N2 | 118.55 (17) | F1—C6—C5 | 119.1 (2) |
C1—N2—N3 | 116.98 (16) | F1—C6—C7 | 118.3 (2) |
C1—N2—H2 | 121.5 | C5—C6—C7 | 122.5 (2) |
N3—N2—H2 | 121.5 | C6—C5—C4 | 119.6 (2) |
C1—N1—H1A | 120.0 | C6—C5—Cl1 | 120.06 (17) |
C1—N1—H1B | 120.0 | C4—C5—Cl1 | 120.32 (18) |
H1A—N1—H1B | 120.0 | C3—C4—C5 | 119.5 (2) |
C8—C3—C4 | 119.05 (19) | C3—C4—H4 | 120.3 |
C8—C3—C2 | 119.89 (18) | C5—C4—H4 | 120.3 |
C4—C3—C2 | 121.06 (19) | N1—C1—N2 | 117.44 (18) |
N3—C2—C3 | 113.97 (18) | N1—C1—S1 | 121.95 (15) |
N3—C2—C9 | 125.24 (19) | N2—C1—S1 | 120.60 (15) |
C3—C2—C9 | 120.74 (17) | C2—C9—H9A | 109.5 |
C7—C8—C3 | 121.3 (2) | C2—C9—H9B | 109.5 |
C7—C8—H8 | 119.3 | H9A—C9—H9B | 109.5 |
C3—C8—H8 | 119.3 | C2—C9—H9C | 109.5 |
C6—C7—C8 | 118.0 (2) | H9A—C9—H9C | 109.5 |
C6—C7—H7 | 121.0 | H9B—C9—H9C | 109.5 |
C8—C7—H7 | 121.0 | ||
C2—N3—N2—C1 | 169.12 (19) | C8—C7—C6—C5 | 0.4 (4) |
N2—N3—C2—C3 | 175.60 (17) | F1—C6—C5—C4 | −179.2 (2) |
N2—N3—C2—C9 | −2.1 (3) | C7—C6—C5—C4 | 0.3 (4) |
C8—C3—C2—N3 | −31.7 (3) | F1—C6—C5—Cl1 | 1.3 (3) |
C4—C3—C2—N3 | 147.8 (2) | C7—C6—C5—Cl1 | −179.13 (19) |
C8—C3—C2—C9 | 146.0 (2) | C8—C3—C4—C5 | 0.6 (3) |
C4—C3—C2—C9 | −34.4 (3) | C2—C3—C4—C5 | −178.9 (2) |
C4—C3—C8—C7 | 0.1 (3) | C6—C5—C4—C3 | −0.8 (3) |
C2—C3—C8—C7 | 179.6 (2) | Cl1—C5—C4—C3 | 178.62 (17) |
C3—C8—C7—C6 | −0.6 (4) | N3—N2—C1—N1 | −5.8 (3) |
C8—C7—C6—F1 | 179.9 (2) | N3—N2—C1—S1 | 175.61 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1B···S1i | 0.86 | 2.50 | 3.327 (2) | 161 |
N2—H2···S1ii | 0.86 | 2.73 | 3.4817 (19) | 147 |
N1—H1A···F1iii | 0.86 | 2.30 | 3.051 (2) | 146 |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x+1, y−1/2, −z+1/2; (iii) −x+2, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C9H9ClFN3S |
Mr | 245.70 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 7.8226 (10), 8.2415 (12), 18.4582 (19) |
β (°) | 112.244 (4) |
V (Å3) | 1101.4 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.52 |
Crystal size (mm) | 0.15 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.926, 0.950 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6461, 2379, 2069 |
Rint | 0.018 |
(sin θ/λ)max (Å−1) | 0.638 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.128, 1.06 |
No. of reflections | 2379 |
No. of parameters | 137 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.47, −0.47 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1B···S1i | 0.86 | 2.50 | 3.327 (2) | 161 |
N2—H2···S1ii | 0.86 | 2.73 | 3.4817 (19) | 147 |
N1—H1A···F1iii | 0.86 | 2.30 | 3.051 (2) | 146 |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x+1, y−1/2, −z+1/2; (iii) −x+2, −y+1, −z. |
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CSD CrossRef Web of Science Google Scholar
Amoedo, A., Adrio, L. A., Antelo, J. M., Martinez, J., Pereira, M. T., Fernandez, A. & Vila, J. M. (2006). Eur. J. Inorg. Chem. pp. 3016–3021. Web of Science CSD CrossRef Google Scholar
Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Etter, M. C., MacDonald, J. C. & Bernstein, J. (1990). Acta Cryst. B46, 256–262. CrossRef CAS Web of Science IUCr Journals Google Scholar
Fonari, M. S., Simonov, Y. A., Kravtsov, V. C., Lipkowski, J., Ganin, E. V. & Yavolovskii, A. A. (2003). J. Mol. Struct. 647, 129–140. Web of Science CSD CrossRef CAS Google Scholar
Kasuga, N. C., Sekino, K., Koumo, C., Shimada, N., Ishikawa, M. & Nomiya, K. (2001). J. Inorg. Biochem. 84, 55–65. Web of Science CSD CrossRef PubMed CAS Google Scholar
Kizilcikli, I., Ulkuseven, B., Dasdemir, Y. & Akkurt, B. (2004). Synth. React. Inorg. Met. Org. Chem. 34, 653–665. CAS Google Scholar
Kovala-Demertzi, D., Varadinova, T., Genova, P., Souza, P. & Demertzis, M. A. (2007). Bioinorg. Chem. Appl. doi:10.1155/2007/56165. Google Scholar
Mirsha, D., Nasker, S., Drew, M. G. B. & Chattopadhay, S. K. (2006). Inorg. Chim. Acta, 359, 585–592. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Tarafder, M. T. H., Islam, M. A. A. A. A., Crouse, K. A., Chantrapromma, S. & Fun, H.-K. (2008). Acta Cryst. E64, o988–o989. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Thiosemicarbazones constitute an important class of N, S donor ligands and have been investigated because of their chemistry and biological activities (Kasuga et al., 2001; Fonari et al., 2003; Kizilcikli et al., 2004; Amoedo et al., 2006; Mirsha et al., 2006; Kovala-Demertzi et al., 2007; Tarafder et al., 2008.) In order to search for new thiosemicarbazones, the title compound has been synthesized and its crystal structure is reported here.
In the title molecule (Fig. 1), the bond lengths and angles are normal (Allen et al., 1987). In the crystal structure, the molecules are linked by intermolecular N1—H1B···S1 hydrogen bonds, forming infinite chains with the graph-set motif C(4) (Tab. 1; Fig. 2; Etter et al., 1990). The involved atoms in this graph set motif are S1—C1—N1—H1B···S1i [the symmetry code i: 1 - x, 1/2 + y, 1/2 + -z]. Moreover, this interaction is strengthened by an almost parallel, a somewhat longer N2—H2···S1 hydrogen bond (Tab. 1; Fig. 3). Both these H bonds form a network R22(8). (The involved atoms in the network are C1i—N1i—H1Bi···S1ii—C1ii—N2ii—H2ii···S1i [the symmetry code i: 1 - x, 1/2 + y, 1/2 - z; ii: 2 - x, 1 - y, -z]). The chains are further linked into the layers by weak N—H···F hydrogen bonds. The N—H···F hydrogen bonds form a ring motif R22(22). [The involved atoms in the ring motif are N1—H1A···F1ii—C6ii—C5ii—C4ii—C3ii—C2ii—N3ii— N2ii—C1ii—N1ii—H1Aii···F1—C6—C5—C4—C3—C2—N3— N2—C1 (the symmetry code ii: 2 - x, 1 - y, -z)]. The layers are parallel to (1 0 2).
In addition, there are also present weak π-electron—π-electron interactions between the benzene rings of the adjacent molecules (the centroid—the centroid distance equals to 3.8997 (15) Å; the symmetry code: 2 - x, 1 - y, -z). Moreover, there is also even a weaker π-electron—π-electron ring interaction between another benzene ring from the other side with the centroid-centroid distance equal to 4.3962 (15)Å (the symmetry code: 2 - x, -y, -z).