- 1. Chemical context
- 2. Computational details
- 3. Structural commentary
- 4. Supramolecular features
- 5. Lattice and intermolecular interaction energies
- 6. Hirshfeld surface analysis and 2D fingerprint plots
- 7. Database survey
- 8. Synthesis and crystallization
- 9. Refinement
- Supporting information
- References
- 1. Chemical context
- 2. Computational details
- 3. Structural commentary
- 4. Supramolecular features
- 5. Lattice and intermolecular interaction energies
- 6. Hirshfeld surface analysis and 2D fingerprint plots
- 7. Database survey
- 8. Synthesis and crystallization
- 9. Refinement
- Supporting information
- References
research communications
Quantitative analysis of weak non-covalent interactions in (Z)-3-(4-chlorophenyl)-2-phenylacrylonitrile: insights from PIXEL and Hirshfeld surface analysis
aBiomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613 401, India, and bUnidad de Polímeros y Electrónica Orgánica, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Val3-Ecocampus Valsequillo, Independencia O2 Sur 50, San Pedro Zacachimalpa, Puebla, CP 72960, Mexico
*Correspondence e-mail: thamu@scbt.sastra.edu
In the solid state, the title compound, C15H10ClN, is disordered over two orientations with a refined occupancy ratio of 0.86 (2):0.14 (2). The is mainly stabilized by intermolecular C—H⋯N and C—H⋯Cl hydrogen bonds, and C—H⋯π interactions. The molecules pack in columns and adjacent columns are linked by weak C—H⋯Cl interactions. The PIXEL energy analysis suggests that the intermolecular C—H⋯π interactions form a strong dimer in the major component. Hirshfeld analysis reveals that H⋯C, H⋯H, H⋯Cl and H⋯N contacts are the most important contributors to the crystal packing.
Keywords: crystal structure; acrylonitrile; conjugation; hydrogen bonding; C—H⋯π interactions; PIXEL; Hirshfeld surface; two-dimensional fingerprint plots..
CCDC reference: 1903772
1. Chemical context
Acrylonitrile compounds have been used as building blocks in flavonoid pigments (Fringuelli et al., 1994) and anticancer agents (Özen et al., 2016). Some of these derivatives have been used to produce light-emitting diodes (LEDs) (Maruyama et al., 1998; Segura et al., 1999). Owing to the versatile physicochemical and biological properties of acrylonitrile derivatives, we have been investigating the optical properties of several (Z)-3-(substituted phenyl)-2-(pyridyl)acrylonitrile compounds with different donor and acceptor moieties (Percino et al., 2010, 2011, 2014a,b, 2016a,b, 2017). Recently, we explored various (Z)-3-(4-halophenyl)-2-(pyridin-2/3/4-yl)acrylonitrile derivatives in order to understand the role of halogen substituents in the context of optical properties and supramolecular associations in the solid state (Venkatesan et al., 2018).
In this work, we report the synthesis and the crystal and molecular structures of an acrylonitrile derivative, namely (Z)-3-(4-chlorophenyl)-2-phenylacrylonitrile (I). We also report herein a detailed analysis of the intermolecular interactions for different molecular pairs observed in I using the PIXEL method (Gavezzotti, 2002, 2011). Hirshfeld surface analysis (Spackman & Jayatilaka, 2009) was also performed to visualize the short contacts in the crystal of I and to determine the relative contributions of the various non-covalent interactions present in the using two-dimensional (2D) fingerprint plots (Spackman & McKinnon, 2002; McKinnon et al., 2007). We also highlight the importance of the weak halogen bonds observed in the crystal structure.
2. Computational details
Structural optimization was carried out using GAUSSIAN09 (Frisch et al., 2013) with the M06-2X/cc-pVTZ level of theory followed by vibrational frequency calculations. The lattice and intermolecular interaction energies were calculated using the CLP-PIXEL program (Version 3.0; Gavezzotti, 2002, 2011). For the intermolecular interaction energy calculations, the geometry along with normalized C—H bond lengths to their respective neutron values (Allen, 1986) was used and the electron density has been obtained at the MP2/6-31G(d,p) level of theory using GAUSSIAN09.
3. Structural commentary
The molecular structure of compound I is shown in Fig. 1. The whole molecule is disordered over two orientations with a refined occupancy ratio of 0.86 (2):0.14 (2). Only the major component is considered for further analysis and discussion. The bond lengths in I clearly indicate the presence of electron delocalization throughout the molecule. The geometrical features of the molecule were further analyzed using the MOGUL geometry check utility available in Mercury (Macrae et al., 2008). The result suggests that the torsion angles C8—C7—C15—N2 [−166.6 (2)°] and C1—C7—C15—N2 [10.5 (2)°] are unusual. The molecule adopts a twisted conformation and the dihedral angle between the planes of the phenyl (C1–C6) and 4-chlorophenyl (C9–C14) rings is 51.91 (8)°. When the unsubstituted phenyl ring in I was replaced by a pyridine ring (Venkatesan et al., 2018), the molecular twist was reduced by at least 50%, and in pyridine containing compounds, the dihedral angles between the two rings are in a range of ca 1–27° (Cambridge Structural Database; Groom et al., 2016).
To understand the conformational flexibility of I, we performed a structural optimization using the GAUSSIAN09 program (Frisch et al., 2013), without any constraints. The vibrational frequency calculation confirmed that the optimized structure is found to be the true energy minima on the surface, since there were no negative frequencies observed for the optimized geometries. The X-ray and optimized structures superimpose well, with an r.m.s. deviation of 0.13 Å (Fig. 2).
4. Supramolecular features
In the crystal, molecules are arranged in a columnar packing mode via intermolecular C—H⋯π, C—H⋯N and C—H⋯Cl interactions (Table 1 and Fig. 3). Adjacent columns are interconnected by halogen bonds (C—H⋯Cl). Within the column, there is nitrile–nitrile stacking and molecules are interlinked by C—H⋯π and C—H⋯N interactions (Table 1).
5. Lattice and intermolecular interaction energies
The lattice energy calculations reveal that the crystal packing is predominantly stabilized through dispersion energy (71%) and the electrostatic (Coulombic + polarization) energy contributes 29% towards the stabilization of the −1) is the sum of the Coulombic (−10.5 kcal mol−1), polarization (−4.7 kcal mol−1), dispersion (−36.6 kcal mol−1) and repulsion (22.9 kcal mol−1) terms. Furthermore, different motifs formed in the major component of I and their energetics are discussed below (Table 2).
The total lattice energy (−28.9 kcal mol
|
Inversion-related molecules form the strongest dimer (motif M1) which is held by intermolecular C—H⋯π interactions with an interaction energy of −9.5 kcal mol−1. As expected, the dispersion contribution (70%) is more significant towards the stabilization of this dimer. Further, this dimer is flanked on both sides by other molecules. As shown in Fig. 4(a), these molecules interact with the central dimer (motif M1) through two C—H⋯π interactions (motif M3; interaction energy = −7.3 kcal mol−1). It is to be noted that the motif M3 is more dispersive in nature (78%) than motif M1. The nitrile group of one molecule stacks with the nitrile group of an inversion-related molecule (motif M2; interaction energy = −8.7 kcal mol−1 and 71% dispersion contribution). The shortest distance observed between two C15 atoms is 3.274 (4) Å and the motif M2 is also flanked on both sides by motif M3. These motifs act together to link the molecules into a chain which runs parallel to the b axis (Fig. 4b).
Motif M4 (interaction energy = −5.9 kcal mol−1) is stabilized by three-centred intermolecular C—H⋯N interactions in which the nitrile N atom acts as an acceptor and the vinylic proton (H9) and one of the protons (H10) of chlorophenyl ring are involved as donors (Fig. 5). These three-centred interactions link the molecules into a chain which runs parallel to the a axis. 53% of the electrostatic and 47% of the dispersion energy contribute towards stabilization of motif M4.
The energetically least-stable dimers (motifs M5 and M6) are formed by intermolecular C—H⋯Cl interactions (Fig. 5). These two interactions help to link adjacent columns in the crystal, as mentioned above. The molecules form an R22(8) loop in the case of motif M5, with an interaction energy of −2.8 kcal mol−1. We note that the dispersion energy (67%) contributes nearly double that of the electrostatic energy (33%) for the stabilization of this motif. Further, a molecular chain is related to motif M6 (interaction energy = −1.6 kcal mol−1) propagating along the c axis direction. This dimer is more dispersive in nature and 75% of the dispersion energy contributes towards the stabilization. Motifs M4–M6 combine to form sheets parallel to the ac plane (Fig. 6).
6. Hirshfeld surface analysis and 2D fingerprint plots
The Hirshfeld surface analysis (Spackman & Jayatilaka, 2009) and the associated 2D fingerprint plots (McKinnon et al., 2007) were performed with CrystalExplorer17 (Turner et al., 2017) for both the major and the minor disordered components. For each component, the occupancies of all atoms were made equal to 1. Hirshfeld surface (HS) analysis was carried out in order to gain more insight into the nature and extent of the intermolecular interactions and to quantify the relative contributions of the different non-covalent interactions that exist in the crystal. The HS surface was mapped over dnorm and the diagram reveals that motifs M2 and M4 are visible as red spots on the HS (Fig. 7) in the major disordered component. It is to be noted that a pale-red spot is noticed for motif M3 when compared to the other two motifs. As mentioned above, motif M4 has two intermolecular C—H⋯N interactions and one of them is found to be a close contact (C8—H8⋯N2).
2D fingerprint plots for the major and the minor components are illustrated in Figs. 7 and 8. For the major component of I, it is found that the contributions for the H⋯C (33.6%) and H⋯H (28.6%) contacts are relatively high in comparison to other non-covalent interactions (Fig. 7). It is of interest to note that the H⋯Cl contacts also contribute substantially (17.9%) to the crystal packing. As noted above, neighbouring columns are interlinked in the crystal via intermolecular H⋯Cl contacts. The intermolecular H⋯N contacts contribute 10.6% towards the crystal packing. The other contacts, such as C⋯C (4.1%) and C⋯N (3.8%), also supplement the overall crystal packing. The former contact represents the motifs M2 and M3, while the latter contact is mainly due to the stacking of the nitrile groups.
In the case of the minor component, the relative contributions of some of the intermolecular contacts are very similar to those for the major component, as shown in Fig. 8. However, the H⋯Cl contacts are reduced by 4.9%. This difference clearly indicates the importance of halogen interactions in the major component of the title compound.
7. Database survey
A search of the Cambridge Structural Database (CSD, Version 5.40, update of February 2019; Groom et al., 2016) using the (Z)-2,3-diphenylacrylonitrile skeleton yielded 306 hits, which include multiple reports of a number of structures. Limiting the search to structures with a halogen atom attached to the phenyl ring, as in the title compound, yielded 13 hits. Two structures are similar to the title compound, namely 2-(4-aminophenyl)-3-(4-bromophenyl)acrylonitrile (CSD refcode IYIBOJ; Bai et al., 2016) and (Z)-3-(2-chloro-6-fluorophenyl)-2-(4-methoxyphenyl)acrylonitrile (KEVQOS; Naveen et al., 2006). Here the planes of the aryl rings are inclined to each other by 66.16 (13)° in IYIBOJ and 57.43 (19)° in KEVQOS. In I, this dihedral angle is 51.91 (8)° in the major disordered component and 61.8 (13)° in the minor disordered component.
8. Synthesis and crystallization
A mixture of phenylacetonitrile (0.53 ml, 4.6 mmol) and 4-chlorobenzaldehyde (4.6 mmol, 0.65 g) was stirred at room temperature for 10 min. Subsequently, the temperature was increased gradually to 403 K and maintained at that temperature for 39 h. Initially, the mixture was colourless and then became viscous and dark. This viscous solution was cooled, treated with hexane and finally filtered. The filtrate contained small colourless crystals. Further purification of the title compound (yield 83%, m.p. 368–370 K) was carried out by recrystallization from hexane. Colourless plate-like crystals, suitable for X-ray I in ethanol at 277 K after a period of 7 d.
were obtained by slow evaporation of a solution of9. Refinement
Crystal data, data collection and structure . The whole molecule was disordered and the major and minor components of the disorder refined to 0.86 (2) and 0.14 (2), respectively. All H atoms were placed in calculated positions and treated as riding, with C—H = 0.95 Å and Uiso(H) = 1.2Ueq(C).
details are summarized in Table 3
|
Supporting information
CCDC reference: 1903772
https://doi.org/10.1107/S2056989019003694/su5483sup1.cif
contains datablocks I, Global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989019003694/su5483Isup2.hkl
Data collection: (CrysAlis PRO; Agilent, 2012); cell
(CrysAlis PRO; Agilent, 2012); data reduction: (CrysAlis PRO; Agilent, 2012); program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014/7 (Sheldrick, 2015); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).C15H10ClN | Dx = 1.336 Mg m−3 |
Mr = 239.69 | Cu Kα radiation, λ = 1.54178 Å |
Orthorhombic, Pbcn | Cell parameters from 3085 reflections |
a = 13.3417 (8) Å | θ = 4.8–67.4° |
b = 7.1030 (5) Å | µ = 2.61 mm−1 |
c = 25.1418 (18) Å | T = 100 K |
V = 2382.6 (3) Å3 | Plate, colourless |
Z = 8 | 0.31 × 0.29 × 0.05 mm |
F(000) = 992 |
SuperNova, Dual, Cu at zero, Atlas diffractometer | 1930 reflections with I > 2σ(I) |
Radiation source: SuperNova (Cu) X-ray Source | Rint = 0.031 |
ω scans | θmax = 67.3°, θmin = 3.5° |
Absorption correction: analytical (CrysAlisPro; Agilent, 2012) | h = −15→11 |
Tmin = 0.560, Tmax = 0.889 | k = −6→8 |
6681 measured reflections | l = −23→30 |
2132 independent reflections |
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)] = 0.050 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.122 | H-atom parameters constrained |
S = 1.10 | w = 1/[σ2(Fo2) + (0.0441P)2 + 2.5669P] where P = (Fo2 + 2Fc2)/3 |
2132 reflections | (Δ/σ)max = 0.001 |
212 parameters | Δρmax = 0.28 e Å−3 |
44 restraints | Δρmin = −0.20 e Å−3 |
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 | Occ. (<1) | |
Cl1 | 0.34667 (5) | 0.49268 (11) | 0.74493 (3) | 0.0369 (2) | 0.8598 (17) |
C12 | 0.3468 (2) | 0.4040 (5) | 0.68021 (11) | 0.0258 (7) | 0.8598 (17) |
C11 | 0.2585 (4) | 0.4067 (10) | 0.65042 (19) | 0.0251 (12) | 0.8598 (17) |
H11 | 0.1975 | 0.4506 | 0.6654 | 0.030* | 0.8598 (17) |
C10 | 0.26234 (19) | 0.3441 (7) | 0.59886 (15) | 0.0230 (8) | 0.8598 (17) |
H10 | 0.2031 | 0.3475 | 0.5779 | 0.028* | 0.8598 (17) |
C9 | 0.35071 (18) | 0.2756 (4) | 0.57609 (11) | 0.0211 (6) | 0.8598 (17) |
C14 | 0.43690 (19) | 0.2651 (4) | 0.60818 (12) | 0.0238 (6) | 0.8598 (17) |
H14 | 0.4969 | 0.2135 | 0.5940 | 0.029* | 0.8598 (17) |
C13 | 0.4351 (2) | 0.3289 (4) | 0.66008 (13) | 0.0251 (6) | 0.8598 (17) |
H13 | 0.4935 | 0.3215 | 0.6817 | 0.030* | 0.8598 (17) |
C8 | 0.34672 (17) | 0.2150 (4) | 0.52053 (11) | 0.0221 (6) | 0.8598 (17) |
H8 | 0.2831 | 0.1722 | 0.5086 | 0.026* | 0.8598 (17) |
C7 | 0.41994 (17) | 0.2112 (3) | 0.48387 (10) | 0.0209 (5) | 0.8598 (17) |
C15 | 0.52002 (18) | 0.2729 (4) | 0.49672 (11) | 0.0223 (6) | 0.8598 (17) |
C1 | 0.4052 (2) | 0.1547 (4) | 0.42761 (11) | 0.0221 (6) | 0.8598 (17) |
C2 | 0.3269 (2) | 0.0340 (5) | 0.41280 (15) | 0.0243 (7) | 0.8598 (17) |
H2 | 0.2827 | −0.0136 | 0.4392 | 0.029* | 0.8598 (17) |
C3 | 0.3133 (3) | −0.0165 (6) | 0.36020 (18) | 0.0295 (7) | 0.8598 (17) |
H3 | 0.2595 | −0.0976 | 0.3508 | 0.035* | 0.8598 (17) |
C4 | 0.3776 (2) | 0.0501 (5) | 0.32082 (12) | 0.0316 (8) | 0.8598 (17) |
H4 | 0.3685 | 0.0140 | 0.2848 | 0.038* | 0.8598 (17) |
C5 | 0.4552 (2) | 0.1704 (5) | 0.33516 (12) | 0.0319 (7) | 0.8598 (17) |
H5 | 0.4989 | 0.2181 | 0.3086 | 0.038* | 0.8598 (17) |
C6 | 0.46955 (19) | 0.2214 (4) | 0.38776 (13) | 0.0258 (6) | 0.8598 (17) |
H6 | 0.5235 | 0.3024 | 0.3969 | 0.031* | 0.8598 (17) |
N2 | 0.6003 (4) | 0.322 (2) | 0.5051 (3) | 0.0275 (13) | 0.8598 (17) |
Cl1' | 0.4211 (3) | −0.0021 (6) | 0.26712 (16) | 0.0355 (12) | 0.1402 (17) |
C12' | 0.3955 (15) | 0.065 (3) | 0.3320 (6) | 0.0258 (7) | 0.1402 (17) |
C11' | 0.3213 (17) | −0.031 (3) | 0.3605 (10) | 0.0251 (12) | 0.1402 (17) |
H11' | 0.2808 | −0.1233 | 0.3438 | 0.030* | 0.1402 (17) |
C10' | 0.3084 (15) | 0.012 (3) | 0.4131 (9) | 0.0230 (8) | 0.1402 (17) |
H10' | 0.2584 | −0.0516 | 0.4330 | 0.028* | 0.1402 (17) |
C9' | 0.3673 (11) | 0.148 (2) | 0.4380 (6) | 0.0211 (6) | 0.1402 (17) |
C14' | 0.4402 (11) | 0.240 (2) | 0.4083 (7) | 0.0238 (6) | 0.1402 (17) |
H14' | 0.4806 | 0.3321 | 0.4253 | 0.029* | 0.1402 (17) |
C13' | 0.4562 (13) | 0.202 (2) | 0.3551 (8) | 0.0251 (6) | 0.1402 (17) |
H13' | 0.5062 | 0.2656 | 0.3352 | 0.030* | 0.1402 (17) |
C8' | 0.3491 (12) | 0.192 (2) | 0.4942 (5) | 0.0221 (6) | 0.1402 (17) |
H8' | 0.2817 | 0.1744 | 0.5054 | 0.026* | 0.1402 (17) |
C7' | 0.4111 (9) | 0.251 (2) | 0.5321 (5) | 0.0209 (5) | 0.1402 (17) |
C15' | 0.5165 (10) | 0.281 (3) | 0.5210 (7) | 0.0223 (6) | 0.1402 (17) |
C1' | 0.3810 (13) | 0.294 (3) | 0.5875 (6) | 0.0221 (6) | 0.1402 (17) |
C2' | 0.2837 (15) | 0.357 (5) | 0.6003 (10) | 0.0243 (7) | 0.1402 (17) |
H2' | 0.2315 | 0.3515 | 0.5746 | 0.029* | 0.1402 (17) |
C3' | 0.265 (3) | 0.429 (9) | 0.6513 (12) | 0.0295 (7) | 0.1402 (17) |
H3' | 0.2066 | 0.5025 | 0.6568 | 0.035* | 0.1402 (17) |
C4' | 0.3293 (16) | 0.396 (4) | 0.6948 (8) | 0.0316 (8) | 0.1402 (17) |
H4' | 0.3103 | 0.4223 | 0.7305 | 0.038* | 0.1402 (17) |
C5' | 0.4215 (14) | 0.322 (3) | 0.6819 (7) | 0.0319 (7) | 0.1402 (17) |
H5' | 0.4684 | 0.2946 | 0.7093 | 0.038* | 0.1402 (17) |
C6' | 0.4461 (14) | 0.288 (3) | 0.6300 (8) | 0.0258 (6) | 0.1402 (17) |
H6' | 0.5140 | 0.2566 | 0.6225 | 0.031* | 0.1402 (17) |
N2' | 0.598 (3) | 0.323 (14) | 0.514 (3) | 0.0275 (13) | 0.1402 (17) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0262 (4) | 0.0535 (5) | 0.0309 (4) | 0.0039 (3) | 0.0002 (2) | −0.0111 (3) |
C12 | 0.0270 (15) | 0.0252 (14) | 0.0252 (16) | 0.0003 (12) | 0.0022 (11) | −0.0039 (13) |
C11 | 0.0152 (15) | 0.023 (3) | 0.0373 (14) | 0.0016 (17) | 0.0025 (11) | 0.0000 (13) |
C10 | 0.0133 (15) | 0.0221 (16) | 0.0336 (13) | −0.0006 (15) | −0.0016 (13) | 0.0021 (11) |
C9 | 0.0133 (13) | 0.0151 (12) | 0.0348 (14) | −0.0033 (11) | −0.0009 (10) | 0.0039 (11) |
C14 | 0.0145 (13) | 0.0231 (14) | 0.0339 (15) | 0.0026 (10) | 0.0024 (13) | 0.0000 (13) |
C13 | 0.0168 (12) | 0.0252 (14) | 0.0335 (16) | −0.0012 (10) | −0.0025 (12) | 0.0013 (14) |
C8 | 0.0137 (11) | 0.0163 (12) | 0.0362 (15) | 0.0001 (9) | −0.0004 (12) | 0.0033 (12) |
C7 | 0.0130 (11) | 0.0159 (11) | 0.0336 (12) | 0.0010 (9) | −0.0010 (9) | 0.0034 (10) |
C15 | 0.0178 (12) | 0.0200 (12) | 0.0290 (14) | 0.0022 (9) | 0.0022 (11) | 0.0019 (13) |
C1 | 0.0134 (12) | 0.0197 (13) | 0.0332 (14) | 0.0021 (12) | −0.0008 (10) | 0.0021 (11) |
C2 | 0.0190 (17) | 0.0195 (15) | 0.0344 (14) | −0.0013 (12) | 0.0006 (13) | 0.0025 (11) |
C3 | 0.0250 (16) | 0.0279 (17) | 0.0355 (15) | −0.0025 (13) | −0.0046 (12) | 0.0017 (12) |
C4 | 0.0303 (17) | 0.0355 (17) | 0.0289 (16) | 0.0033 (13) | −0.0026 (12) | 0.0013 (13) |
C5 | 0.0269 (14) | 0.0346 (17) | 0.0343 (16) | 0.0020 (13) | 0.0021 (13) | 0.0059 (13) |
C6 | 0.0173 (13) | 0.0228 (14) | 0.0372 (17) | −0.0004 (11) | 0.0009 (11) | 0.0051 (12) |
N2 | 0.0163 (10) | 0.0277 (10) | 0.039 (4) | 0.0005 (8) | 0.0000 (12) | 0.000 (3) |
Cl1' | 0.042 (2) | 0.036 (2) | 0.029 (2) | 0.0029 (19) | 0.0032 (17) | −0.0018 (17) |
C12' | 0.0270 (15) | 0.0252 (14) | 0.0252 (16) | 0.0003 (12) | 0.0022 (11) | −0.0039 (13) |
C11' | 0.0152 (15) | 0.023 (3) | 0.0373 (14) | 0.0016 (17) | 0.0025 (11) | 0.0000 (13) |
C10' | 0.0133 (15) | 0.0221 (16) | 0.0336 (13) | −0.0006 (15) | −0.0016 (13) | 0.0021 (11) |
C9' | 0.0133 (13) | 0.0151 (12) | 0.0348 (14) | −0.0033 (11) | −0.0009 (10) | 0.0039 (11) |
C14' | 0.0145 (13) | 0.0231 (14) | 0.0339 (15) | 0.0026 (10) | 0.0024 (13) | 0.0000 (13) |
C13' | 0.0168 (12) | 0.0252 (14) | 0.0335 (16) | −0.0012 (10) | −0.0025 (12) | 0.0013 (14) |
C8' | 0.0137 (11) | 0.0163 (12) | 0.0362 (15) | 0.0001 (9) | −0.0004 (12) | 0.0033 (12) |
C7' | 0.0130 (11) | 0.0159 (11) | 0.0336 (12) | 0.0010 (9) | −0.0010 (9) | 0.0034 (10) |
C15' | 0.0178 (12) | 0.0200 (12) | 0.0290 (14) | 0.0022 (9) | 0.0022 (11) | 0.0019 (13) |
C1' | 0.0134 (12) | 0.0197 (13) | 0.0332 (14) | 0.0021 (12) | −0.0008 (10) | 0.0021 (11) |
C2' | 0.0190 (17) | 0.0195 (15) | 0.0344 (14) | −0.0013 (12) | 0.0006 (13) | 0.0025 (11) |
C3' | 0.0250 (16) | 0.0279 (17) | 0.0355 (15) | −0.0025 (13) | −0.0046 (12) | 0.0017 (12) |
C4' | 0.0303 (17) | 0.0355 (17) | 0.0289 (16) | 0.0033 (13) | −0.0026 (12) | 0.0013 (13) |
C5' | 0.0269 (14) | 0.0346 (17) | 0.0343 (16) | 0.0020 (13) | 0.0021 (13) | 0.0059 (13) |
C6' | 0.0173 (13) | 0.0228 (14) | 0.0372 (17) | −0.0004 (11) | 0.0009 (11) | 0.0051 (12) |
N2' | 0.0163 (10) | 0.0277 (10) | 0.039 (4) | 0.0005 (8) | 0.0000 (12) | 0.000 (3) |
Cl1—C12 | 1.745 (3) | Cl1'—Cl1'i | 2.275 (9) |
C12—C13 | 1.389 (4) | C12'—C13' | 1.389 (17) |
C12—C11 | 1.397 (5) | C12'—C11' | 1.399 (18) |
C11—C10 | 1.371 (4) | C11'—C10' | 1.368 (19) |
C11—H11 | 0.9500 | C11'—H11' | 0.9500 |
C10—C9 | 1.398 (4) | C10'—C9' | 1.391 (17) |
C10—H10 | 0.9500 | C10'—H10' | 0.9500 |
C9—C14 | 1.407 (4) | C9'—C14' | 1.388 (15) |
C9—C8 | 1.462 (4) | C9'—C8' | 1.467 (15) |
C14—C13 | 1.382 (4) | C14'—C13' | 1.383 (16) |
C14—H14 | 0.9500 | C14'—H14' | 0.9500 |
C13—H13 | 0.9500 | C13'—H13' | 0.9500 |
C8—C7 | 1.344 (3) | C8'—C7' | 1.331 (14) |
C8—H8 | 0.9500 | C8'—H8' | 0.9500 |
C7—C15 | 1.442 (3) | C7'—C15' | 1.448 (14) |
C7—C1 | 1.483 (4) | C7'—C1' | 1.483 (15) |
C15—N2 | 1.146 (5) | C15'—N2' | 1.148 (17) |
C1—C6 | 1.402 (4) | C1'—C6' | 1.377 (16) |
C1—C2 | 1.402 (4) | C1'—C2' | 1.410 (18) |
C2—C3 | 1.382 (5) | C2'—C3' | 1.40 (2) |
C2—H2 | 0.9500 | C2'—H2' | 0.9500 |
C3—C4 | 1.393 (5) | C3'—C4' | 1.41 (2) |
C3—H3 | 0.9500 | C3'—H3' | 0.9500 |
C4—C5 | 1.390 (4) | C4'—C5' | 1.376 (17) |
C4—H4 | 0.9500 | C4'—H4' | 0.9500 |
C5—C6 | 1.384 (4) | C5'—C6' | 1.369 (16) |
C5—H5 | 0.9500 | C5'—H5' | 0.9500 |
C6—H6 | 0.9500 | C6'—H6' | 0.9500 |
Cl1'—C12' | 1.735 (15) | ||
C13—C12—C11 | 121.7 (3) | C13'—C12'—C11' | 122.6 (16) |
C13—C12—Cl1 | 118.7 (2) | C13'—C12'—Cl1' | 118.0 (14) |
C11—C12—Cl1 | 119.6 (3) | C11'—C12'—Cl1' | 119.1 (15) |
C10—C11—C12 | 118.1 (4) | C10'—C11'—C12' | 118 (2) |
C10—C11—H11 | 120.9 | C10'—C11'—H11' | 120.8 |
C12—C11—H11 | 120.9 | C12'—C11'—H11' | 120.8 |
C11—C10—C9 | 122.1 (3) | C11'—C10'—C9' | 121.2 (19) |
C11—C10—H10 | 119.0 | C11'—C10'—H10' | 119.4 |
C9—C10—H10 | 119.0 | C9'—C10'—H10' | 119.4 |
C10—C9—C14 | 118.2 (3) | C14'—C9'—C10' | 118.6 (14) |
C10—C9—C8 | 117.6 (2) | C14'—C9'—C8' | 122.3 (14) |
C14—C9—C8 | 124.2 (2) | C10'—C9'—C8' | 119.1 (15) |
C13—C14—C9 | 120.7 (2) | C13'—C14'—C9' | 122.5 (15) |
C13—C14—H14 | 119.6 | C13'—C14'—H14' | 118.8 |
C9—C14—H14 | 119.6 | C9'—C14'—H14' | 118.8 |
C14—C13—C12 | 119.0 (2) | C14'—C13'—C12' | 116.7 (15) |
C14—C13—H13 | 120.5 | C14'—C13'—H13' | 121.6 |
C12—C13—H13 | 120.5 | C12'—C13'—H13' | 121.6 |
C7—C8—C9 | 129.4 (2) | C7'—C8'—C9' | 130.8 (14) |
C7—C8—H8 | 115.3 | C7'—C8'—H8' | 114.6 |
C9—C8—H8 | 115.3 | C9'—C8'—H8' | 114.6 |
C8—C7—C15 | 120.9 (2) | C8'—C7'—C15' | 120.8 (13) |
C8—C7—C1 | 124.3 (2) | C8'—C7'—C1' | 124.7 (12) |
C15—C7—C1 | 114.7 (2) | C15'—C7'—C1' | 114.4 (13) |
N2—C15—C7 | 177.6 (5) | N2'—C15'—C7' | 173 (5) |
C6—C1—C2 | 118.2 (3) | C6'—C1'—C2' | 114.6 (15) |
C6—C1—C7 | 120.6 (3) | C6'—C1'—C7' | 123.4 (15) |
C2—C1—C7 | 121.1 (3) | C2'—C1'—C7' | 121.9 (16) |
C3—C2—C1 | 120.7 (3) | C3'—C2'—C1' | 119 (2) |
C3—C2—H2 | 119.7 | C3'—C2'—H2' | 120.4 |
C1—C2—H2 | 119.7 | C1'—C2'—H2' | 120.4 |
C2—C3—C4 | 120.8 (4) | C2'—C3'—C4' | 123 (2) |
C2—C3—H3 | 119.6 | C2'—C3'—H3' | 118.6 |
C4—C3—H3 | 119.6 | C4'—C3'—H3' | 118.6 |
C5—C4—C3 | 118.9 (3) | C5'—C4'—C3' | 115.1 (18) |
C5—C4—H4 | 120.6 | C5'—C4'—H4' | 122.5 |
C3—C4—H4 | 120.6 | C3'—C4'—H4' | 122.5 |
C6—C5—C4 | 120.8 (3) | C6'—C5'—C4' | 120.5 (17) |
C6—C5—H5 | 119.6 | C6'—C5'—H5' | 119.8 |
C4—C5—H5 | 119.6 | C4'—C5'—H5' | 119.8 |
C5—C6—C1 | 120.6 (3) | C5'—C6'—C1' | 125.6 (17) |
C5—C6—H6 | 119.7 | C5'—C6'—H6' | 117.2 |
C1—C6—H6 | 119.7 | C1'—C6'—H6' | 117.2 |
C12'—Cl1'—Cl1'i | 122.6 (7) | ||
C13—C12—C11—C10 | −4.3 (8) | Cl1'i—Cl1'—C12'—C11' | −142.8 (8) |
Cl1—C12—C11—C10 | 177.0 (4) | C13'—C12'—C11'—C10' | −0.02 (15) |
C12—C11—C10—C9 | 1.2 (9) | Cl1'—C12'—C11'—C10' | 174.0 (14) |
C11—C10—C9—C14 | 2.3 (7) | C12'—C11'—C10'—C9' | 0.02 (15) |
C11—C10—C9—C8 | −179.1 (5) | C11'—C10'—C9'—C14' | −0.1 (3) |
C10—C9—C14—C13 | −2.9 (4) | C11'—C10'—C9'—C8' | 178.7 (14) |
C8—C9—C14—C13 | 178.7 (3) | C10'—C9'—C14'—C13' | 0.1 (5) |
C9—C14—C13—C12 | −0.1 (4) | C8'—C9'—C14'—C13' | −178.6 (15) |
C11—C12—C13—C14 | 3.8 (6) | C9'—C14'—C13'—C12' | −0.1 (4) |
Cl1—C12—C13—C14 | −177.5 (2) | C11'—C12'—C13'—C14' | 0.1 (3) |
C10—C9—C8—C7 | 152.5 (3) | Cl1'—C12'—C13'—C14' | −174.0 (14) |
C14—C9—C8—C7 | −29.0 (5) | C14'—C9'—C8'—C7' | −31 (3) |
C9—C8—C7—C15 | −0.2 (4) | C10'—C9'—C8'—C7' | 150.5 (17) |
C9—C8—C7—C1 | −176.9 (2) | C9'—C8'—C7'—C15' | −1 (3) |
C8—C7—C1—C6 | 154.5 (3) | C9'—C8'—C7'—C1' | 178.5 (17) |
C15—C7—C1—C6 | −22.4 (3) | C8'—C7'—C1'—C6' | 155 (2) |
C8—C7—C1—C2 | −25.4 (4) | C15'—C7'—C1'—C6' | −25 (3) |
C15—C7—C1—C2 | 157.7 (3) | C8'—C7'—C1'—C2' | −29 (3) |
C6—C1—C2—C3 | −0.5 (4) | C15'—C7'—C1'—C2' | 151 (2) |
C7—C1—C2—C3 | 179.5 (3) | C6'—C1'—C2'—C3' | 8 (5) |
C1—C2—C3—C4 | 0.5 (4) | C7'—C1'—C2'—C3' | −168 (4) |
C2—C3—C4—C5 | −0.7 (4) | C1'—C2'—C3'—C4' | −18 (8) |
C3—C4—C5—C6 | 0.9 (4) | C2'—C3'—C4'—C5' | 13 (7) |
C4—C5—C6—C1 | −0.9 (4) | C3'—C4'—C5'—C6' | 1 (5) |
C2—C1—C6—C5 | 0.6 (4) | C4'—C5'—C6'—C1' | −10 (4) |
C7—C1—C6—C5 | −179.3 (2) | C2'—C1'—C6'—C5' | 5 (4) |
Cl1'i—Cl1'—C12'—C13' | 31.4 (14) | C7'—C1'—C6'—C5' | −178 (2) |
Symmetry code: (i) −x+1, y, −z+1/2. |
Cg1 and Cg2 are the centroids of rings C1–C6 and C9–C14 of the major disordered component. Cg1' and Cg2' are the centroids of rings C1'–C6' and C9'–C14' of the minor disordered component. |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5···Cl1′i | 0.95 | 2.69 | 3.292 (5) | 122 |
C8—H8···N2ii | 0.95 | 2.46 | 3.361 (6) | 157 |
C8—H8···N2′ii | 0.95 | 2.53 | 3.44 (4) | 160 |
C14—H14···N2′ | 0.95 | 2.54 | 3.22 (6) | 129 |
C3—H3···Cg1iii | 0.95 | 2.99 | 3.860 (4) | 153 |
C3—H3···Cg2′iii | 0.95 | 2.95 | 3.784 (9) | 148 |
C11—H11···Cg2iv | 0.95 | 2.96 | 3.418 (7) | 111 |
C11—H11···Cg1′iv | 0.95 | 2.97 | 3.486 (15) | 115 |
C14—H14···Cg1v | 0.95 | 2.81 | 3.503 (3) | 130 |
C14—H14···Cg2′v | 0.95 | 2.84 | 3.585 (8) | 136 |
C3′—H3′···Cg2iv | 0.95 | 2.59 | 3.32 (6) | 134 |
C3′—H3′···Cg1′iv | 0.95 | 2.62 | 3.39 (6) | 139 |
C6′—H6′···Cg1v | 0.95 | 2.85 | 3.52 (2) | 129 |
C6′—H6′···Cg2′v | 0.95 | 2.93 | 3.64 (2) | 132 |
Symmetry codes: (i) −x+1, y, −z+1/2; (ii) x−1/2, −y+1/2, −z+1; (iii) −x+1/2, y−1/2, z; (iv) −x+1/2, y+1/2, z; (v) −x+1, −y, −z+1. |
Motif | CD (Å) | Symmetry | ECoul | Epol | Edisp | Erep | Etot | Possible interactions | Geometry (Å, °)a |
M1 | 5.163 | -x+1, -y, -z+1 | -4.0 | -1.4 | -12.5 | 8.3 | -9.5 | C14—H14···Cg1 | 2.81, 130 |
M2 | 4.820 | -x+1, -y+1, -z+1 | -3.1 | -1.5 | -11.5 | 7.4 | -8.7 | C15···C15(π–π) | 3.274 (4) |
M3 | 5.122 | -x+1/2, y-1/2, z | -1.9 | -1.0 | -10.0 | 5.6 | -7.3 | C3—H3···Cg1 | 2.99, 153 |
C11—H11···Cg2 | 2.96, 111 | ||||||||
M4 | 6.925 | x-1/2, -y+1/2, -z+1 | -4.3 | -1.6 | -5.2 | 5.3 | -5.9 | C8—H8···N2 | 2.34, 156 |
C10—H10···N2 | 2.66, 143 | ||||||||
M5 | 11.134 | -x+1, y, -z+3/2 | -1.1 | -0.5 | -3.2 | 1.8 | -2.8 | C13—H13···Cl1 | 2.95, 152 |
M6 | 13.104 | -x+1/2, -y+1/2, z-1/2 | -0.6 | -0.4 | -2.8 | 2.1 | -1.6 | C4—H4···Cl1 | 2.98, 114 |
Note: (a) neutron values are given for all D—H···A interactions. |
Acknowledgements
The authors would like to thank Laboratorio Nacional de Supercoìmputo del Sureste (LNS–BUAP) for the calculus service and the PEZM NAT17-G (VIEP–BUAP) and SA/103.5/15/12684 (PRODEP–SEP) projects, as well as Dr Maxime A. Siegler (Johns Hopkins University) for assistance with the data collection. ST thanks the DST–SERB for financial support.
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