| Literature DB >> 31636988 |
Abdullah Aydin1, Sevim Turktekin Celikesir2, Mehmet Akkurt2, Merve Saylam3, Varol Pabuccuoglu4.
Abstract
In the title compound, C16H14N2O3S, the 1,3-benzoxazole ring system is essentially planar (r.m.s deviation = 0.004 Å) and makes a dihedral angle of 66.16 (17)° with the benzene ring of the meth-oxy-phenyl group. Two intra-molecular N-H⋯O and N-H⋯N hydrogen bonds occur, forming S(5) and S(7) ring motifs, respectively. In the crystal, pairs of C-H⋯O hydrogen bonds link the mol-ecules into inversion dimers with R 2 2(14) ring motifs, stacked along the b-axis direction. The inversion dimers are linked by C-H⋯π and π-π-stacking inter-actions [centroid-to-centroid distances = 3.631 (2) and 3.631 (2) Å], forming a three-dimensional network. Two-dimensional fingerprint plots associated with the Hirshfeld surface show that the largest contributions to the crystal packing come from H⋯H (39.3%), C⋯H/H⋯C (18.0%), O⋯H/H⋯O (15.6) and S⋯H/H⋯S (10.2%) inter-actions. © Aydin et al. 2019.Entities:
Keywords: 1,3-benzoxazole ring system; Hirshfeld surface analysis; crystal structure; dimers; hydrogen bonding
Year: 2019 PMID: 31636988 PMCID: PMC6775743 DOI: 10.1107/S2056989019012908
Source DB: PubMed Journal: Acta Crystallogr E Crystallogr Commun
Figure 1The molecular structure of the title compound, showing the atom labelling and displacement ellipsoids drawn at the 30% probability level. Intramolecular hydrogen bonds are shown as dashed lines.
Hydrogen-bond geometry (Å, °)
Cg3 is the centroid of the C10–C15 benzene ring of the methoxy phenyl group.
|
|
| H⋯ |
|
|
|---|---|---|---|---|
| N2—H | 0.86 | 2.22 | 2.608 (4) | 107 |
| N2—H | 0.86 | 2.39 | 3.075 (4) | 136 |
| C8—H8 | 0.97 | 2.48 | 2.914 (5) | 107 |
| C11—H11⋯O2 | 0.93 | 2.28 | 2.869 (5) | 121 |
| C12—H12⋯O2i | 0.93 | 2.52 | 3.378 (6) | 153 |
| C13—H13⋯ | 0.93 | 2.89 | 3.634 (5) | 138 |
Symmetry codes: (i) ; (ii) .
Figure 2A packing diagram of the title compound, showing the intra- and intermolecular N—H⋯N and N—H⋯O, C—H⋯O hydrogen bonds, C—H⋯π interactions and π–π-stacking interactions (dashed lines). Symmetry code: (a) − x, 2 − y, 1 − z.
Figure 3Packing diagram of the title compound viewed down the b axis.
Figure 4Hirshfeld surface mapped over d norm, showing the weak intermolecular C—H⋯O and C—H⋯C contacts.
Figure 5View of the three-dimensional Hirshfeld surface of the title compound plotted over electrostatic potential energy in the range −0.0500 to 0.0500 a.u. using the STO-3 G basis set at the Hartree–Fock level of theory. Hydrogen- bond donors and acceptors are shown as blue and red regions around the atoms corresponding to positive and negative potentials, respectively.
Figure 6Hirshfeld surfaces for the title compound, mapped with shape-index.
Figure 7Hirshfeld surfaces and two-dimensional fingerprints for the compound, showing (a) all interactions and those delineated into (b) H⋯H, (c) C⋯H/H⋯C, (d) O⋯H/H⋯O, (e) S⋯H/H⋯S and (f) C⋯O/O⋯C contacts.
Summary of selected short interatomic contacts (Å) in the title compound
| Contact | Distance | Symmetry operation |
|---|---|---|
| H5⋯O3 | 2.72 | 1 − |
| S1⋯H2 | 3.10 |
|
| C5⋯C1 | 3.38 | 1 − |
| H8 | 3.06 | − |
| H12⋯O2 | 2.52 | − |
| O2⋯H16 | 2.74 |
|
| C10⋯H13 | 3.04 | − |
| C12⋯H8 | 2.82 |
|
Percentage contributions of interatomic contacts to the Hirshfeld surface of the title compound
| Contact | Percentage contribution |
|---|---|
| H⋯H | 39.3 |
| H⋯C/C⋯H | 18.0 |
| O⋯H/H⋯O | 15.6 |
| S⋯H/H⋯S | 10.2 |
| C⋯O/O⋯C | 6.0 |
| C⋯C | 4.5 |
| N⋯H/H⋯N | 4.1 |
| C⋯N/N⋯C | 1.4 |
| C⋯S/S⋯C | 0.6 |
| N⋯O/O⋯N | 0.1 |
Experimental details
| Crystal data | |
| Chemical formula | C16H14N2O3S |
|
| 314.35 |
| Crystal system, space group | Monoclinic, |
| Temperature (K) | 296 |
|
| 13.6670 (13), 6.8704 (6), 16.7220 (16) |
| β (°) | 108.020 (4) |
|
| 1493.1 (2) |
|
| 4 |
| Radiation type | Mo |
| μ (mm−1) | 0.23 |
| Crystal size (mm) | 0.10 × 0.07 × 0.06 |
| Data collection | |
| Diffractometer | Bruker APEXII CCD |
| Absorption correction | Multi-scan ( |
|
| 0.654, 0.745 |
| No. of measured, independent and observed [ | 23464, 3019, 2241 |
|
| 0.092 |
| (sin θ/λ)max (Å−1) | 0.627 |
| Refinement | |
|
| 0.092, 0.169, 1.10 |
| No. of reflections | 3019 |
| No. of parameters | 200 |
| H-atom treatment | H-atom parameters constrained |
| Δρmax, Δρmin (e Å−3) | 0.25, −0.31 |
Computer programs: APEX2 and SAINT (Bruker, 2007 ▸), SHELXT2014/5 (Sheldrick, 2015a ▸), SHELXL2018/1 (Sheldrick, 2015b ▸), ORTEP-3 for Windows and WinGX (Farrugia, 2012 ▸) and PLATON (Spek, 2009 ▸).
| C16H14N2O3S | |
| Monoclinic, | Mo |
| Cell parameters from 6692 reflections | |
| θ = 3.2–26.3° | |
| µ = 0.23 mm−1 | |
| β = 108.020 (4)° | |
| Block, colourless | |
| 0.10 × 0.07 × 0.06 mm |
| Bruker APEXII CCD diffractometer | 2241 reflections with |
| φ and ω scans | |
| Absorption correction: multi-scan (SADABS; Bruker, 2007) | θmax = 26.5°, θmin = 3.1° |
| 23464 measured reflections | |
| 3019 independent reflections |
| Refinement on | 0 restraints |
| Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
| H-atom parameters constrained | |
| (Δ/σ)max < 0.001 | |
| 3019 reflections | Δρmax = 0.25 e Å−3 |
| 200 parameters | Δρmin = −0.31 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. |
| C1 | 0.4055 (3) | 0.2452 (5) | 0.4388 (2) | 0.0301 (9) | |
| C2 | 0.4121 (3) | 0.1973 (6) | 0.3599 (3) | 0.0437 (11) | |
| H2 | 0.353578 | 0.186794 | 0.313350 | 0.052* | |
| C3 | 0.5089 (4) | 0.1660 (7) | 0.3535 (3) | 0.0507 (12) | |
| H3 | 0.515664 | 0.134545 | 0.301349 | 0.061* | |
| C4 | 0.5962 (4) | 0.1801 (6) | 0.4223 (3) | 0.0515 (13) | |
| H4 | 0.660182 | 0.158127 | 0.415281 | 0.062* | |
| C5 | 0.5910 (3) | 0.2258 (6) | 0.5012 (3) | 0.0460 (11) | |
| H5 | 0.649354 | 0.234724 | 0.547961 | 0.055* | |
| C6 | 0.4940 (3) | 0.2573 (5) | 0.5059 (3) | 0.0330 (9) | |
| C7 | 0.3608 (3) | 0.3093 (5) | 0.5452 (2) | 0.0304 (9) | |
| C8 | 0.1670 (3) | 0.3513 (7) | 0.5515 (3) | 0.0401 (10) | |
| H8A | 0.160668 | 0.258715 | 0.506432 | 0.048* | |
| H8B | 0.122257 | 0.308919 | 0.583244 | 0.048* | |
| C9 | 0.1330 (3) | 0.5503 (6) | 0.5143 (2) | 0.0368 (10) | |
| C10 | 0.1249 (3) | 0.7568 (6) | 0.3915 (2) | 0.0272 (8) | |
| C11 | 0.0683 (3) | 0.9111 (6) | 0.4077 (2) | 0.0364 (10) | |
| H11 | 0.044048 | 0.906129 | 0.453818 | 0.044* | |
| C12 | 0.0479 (3) | 1.0720 (7) | 0.3557 (3) | 0.0438 (11) | |
| H12 | 0.008978 | 1.173897 | 0.366520 | 0.053* | |
| C13 | 0.0844 (3) | 1.0826 (7) | 0.2882 (3) | 0.0443 (11) | |
| H13 | 0.070946 | 1.191980 | 0.253773 | 0.053* | |
| C14 | 0.1411 (3) | 0.9312 (7) | 0.2714 (2) | 0.0380 (10) | |
| H14 | 0.165837 | 0.938978 | 0.225560 | 0.046* | |
| C15 | 0.1615 (3) | 0.7687 (6) | 0.3217 (2) | 0.0290 (9) | |
| C16 | 0.2621 (5) | 0.6219 (9) | 0.2449 (3) | 0.078 (2) | |
| H16A | 0.209173 | 0.634567 | 0.191795 | 0.118* | |
| H16B | 0.301214 | 0.505956 | 0.244719 | 0.118* | |
| H16C | 0.306739 | 0.733112 | 0.253872 | 0.118* | |
| N1 | 0.3202 (2) | 0.2815 (5) | 0.46627 (18) | 0.0309 (7) | |
| N2 | 0.1476 (2) | 0.5848 (5) | 0.43945 (19) | 0.0302 (7) | |
| HN2 | 0.173630 | 0.491051 | 0.418615 | 0.036* | |
| O1 | 0.4653 (2) | 0.3005 (4) | 0.57658 (16) | 0.0363 (7) | |
| O2 | 0.0961 (3) | 0.6653 (6) | 0.55175 (19) | 0.0687 (11) | |
| O3 | 0.2163 (2) | 0.6103 (4) | 0.31065 (17) | 0.0467 (8) | |
| S1 | 0.29895 (9) | 0.35394 (17) | 0.62002 (6) | 0.0420 (3) |
| C1 | 0.036 (2) | 0.0217 (18) | 0.032 (2) | 0.0038 (16) | 0.0093 (17) | 0.0053 (16) |
| C2 | 0.047 (3) | 0.045 (3) | 0.039 (2) | 0.002 (2) | 0.013 (2) | 0.000 (2) |
| C3 | 0.059 (3) | 0.046 (3) | 0.058 (3) | 0.006 (2) | 0.033 (3) | 0.001 (2) |
| C4 | 0.044 (3) | 0.036 (2) | 0.085 (4) | 0.005 (2) | 0.035 (3) | 0.009 (2) |
| C5 | 0.032 (2) | 0.035 (2) | 0.066 (3) | −0.0031 (19) | 0.007 (2) | 0.009 (2) |
| C6 | 0.038 (2) | 0.0217 (19) | 0.039 (2) | −0.0024 (17) | 0.0112 (18) | 0.0046 (17) |
| C7 | 0.036 (2) | 0.024 (2) | 0.029 (2) | 0.0016 (16) | 0.0067 (17) | 0.0061 (16) |
| C8 | 0.041 (2) | 0.052 (3) | 0.034 (2) | −0.009 (2) | 0.0208 (19) | 0.000 (2) |
| C9 | 0.036 (2) | 0.053 (3) | 0.026 (2) | −0.001 (2) | 0.0156 (18) | −0.0053 (19) |
| C10 | 0.0190 (18) | 0.040 (2) | 0.0195 (18) | −0.0011 (16) | 0.0007 (15) | −0.0058 (16) |
| C11 | 0.027 (2) | 0.050 (3) | 0.030 (2) | 0.0069 (19) | 0.0060 (17) | −0.0084 (19) |
| C12 | 0.035 (2) | 0.049 (3) | 0.040 (3) | 0.017 (2) | 0.002 (2) | −0.010 (2) |
| C13 | 0.043 (3) | 0.044 (3) | 0.038 (2) | 0.012 (2) | 0.000 (2) | 0.005 (2) |
| C14 | 0.034 (2) | 0.055 (3) | 0.022 (2) | 0.004 (2) | 0.0055 (17) | 0.0048 (19) |
| C15 | 0.0247 (19) | 0.040 (2) | 0.0224 (18) | 0.0045 (17) | 0.0067 (15) | −0.0009 (17) |
| C16 | 0.117 (5) | 0.081 (4) | 0.066 (4) | 0.054 (4) | 0.071 (4) | 0.027 (3) |
| N1 | 0.0325 (18) | 0.0342 (18) | 0.0236 (17) | 0.0008 (14) | 0.0055 (14) | −0.0010 (14) |
| N2 | 0.0334 (18) | 0.0369 (18) | 0.0261 (16) | 0.0024 (14) | 0.0177 (14) | −0.0058 (14) |
| O1 | 0.0348 (16) | 0.0358 (15) | 0.0311 (15) | −0.0026 (13) | −0.0002 (12) | 0.0042 (12) |
| O2 | 0.101 (3) | 0.082 (3) | 0.0401 (19) | 0.035 (2) | 0.046 (2) | 0.0056 (18) |
| O3 | 0.062 (2) | 0.0517 (19) | 0.0380 (17) | 0.0240 (16) | 0.0333 (15) | 0.0094 (14) |
| S1 | 0.0516 (7) | 0.0517 (7) | 0.0226 (5) | 0.0004 (6) | 0.0114 (5) | 0.0050 (5) |
| C1—C6 | 1.375 (6) | C9—O2 | 1.211 (5) |
| C1—C2 | 1.389 (5) | C9—N2 | 1.348 (5) |
| C1—N1 | 1.401 (5) | C10—C11 | 1.388 (5) |
| C2—C3 | 1.377 (6) | C10—C15 | 1.406 (5) |
| C2—H2 | 0.9300 | C10—N2 | 1.408 (5) |
| C3—C4 | 1.382 (7) | C11—C12 | 1.381 (6) |
| C3—H3 | 0.9300 | C11—H11 | 0.9300 |
| C4—C5 | 1.379 (7) | C12—C13 | 1.370 (6) |
| C4—H4 | 0.9300 | C12—H12 | 0.9300 |
| C5—C6 | 1.370 (6) | C13—C14 | 1.377 (6) |
| C5—H5 | 0.9300 | C13—H13 | 0.9300 |
| C6—O1 | 1.388 (5) | C14—C15 | 1.374 (6) |
| C7—N1 | 1.278 (5) | C14—H14 | 0.9300 |
| C7—O1 | 1.362 (5) | C15—O3 | 1.366 (4) |
| C7—S1 | 1.740 (4) | C16—O3 | 1.426 (5) |
| C8—C9 | 1.514 (6) | C16—H16A | 0.9600 |
| C8—S1 | 1.812 (4) | C16—H16B | 0.9600 |
| C8—H8A | 0.9700 | C16—H16C | 0.9600 |
| C8—H8B | 0.9700 | N2—HN2 | 0.8600 |
| C6—C1—C2 | 119.4 (4) | C11—C10—N2 | 124.6 (3) |
| C6—C1—N1 | 109.4 (3) | C15—C10—N2 | 116.7 (3) |
| C2—C1—N1 | 131.2 (4) | C12—C11—C10 | 120.4 (4) |
| C3—C2—C1 | 117.2 (4) | C12—C11—H11 | 119.8 |
| C3—C2—H2 | 121.4 | C10—C11—H11 | 119.8 |
| C1—C2—H2 | 121.4 | C13—C12—C11 | 120.4 (4) |
| C2—C3—C4 | 121.8 (4) | C13—C12—H12 | 119.8 |
| C2—C3—H3 | 119.1 | C11—C12—H12 | 119.8 |
| C4—C3—H3 | 119.1 | C12—C13—C14 | 120.0 (4) |
| C5—C4—C3 | 121.8 (4) | C12—C13—H13 | 120.0 |
| C5—C4—H4 | 119.1 | C14—C13—H13 | 120.0 |
| C3—C4—H4 | 119.1 | C15—C14—C13 | 120.6 (4) |
| C6—C5—C4 | 115.3 (4) | C15—C14—H14 | 119.7 |
| C6—C5—H5 | 122.3 | C13—C14—H14 | 119.7 |
| C4—C5—H5 | 122.3 | O3—C15—C14 | 125.4 (3) |
| C5—C6—C1 | 124.5 (4) | O3—C15—C10 | 114.6 (3) |
| C5—C6—O1 | 128.0 (4) | C14—C15—C10 | 120.0 (4) |
| C1—C6—O1 | 107.4 (3) | O3—C16—H16A | 109.5 |
| N1—C7—O1 | 117.4 (3) | O3—C16—H16B | 109.5 |
| N1—C7—S1 | 128.1 (3) | H16A—C16—H16B | 109.5 |
| O1—C7—S1 | 114.5 (3) | O3—C16—H16C | 109.5 |
| C9—C8—S1 | 111.7 (3) | H16A—C16—H16C | 109.5 |
| C9—C8—H8A | 109.3 | H16B—C16—H16C | 109.5 |
| S1—C8—H8A | 109.3 | C7—N1—C1 | 103.1 (3) |
| C9—C8—H8B | 109.3 | C9—N2—C10 | 127.4 (3) |
| S1—C8—H8B | 109.3 | C9—N2—HN2 | 116.3 |
| H8A—C8—H8B | 107.9 | C10—N2—HN2 | 116.3 |
| O2—C9—N2 | 124.7 (4) | C7—O1—C6 | 102.7 (3) |
| O2—C9—C8 | 120.1 (4) | C15—O3—C16 | 116.7 (3) |
| N2—C9—C8 | 115.2 (3) | C7—S1—C8 | 98.82 (18) |
| C11—C10—C15 | 118.7 (4) | ||
| C6—C1—C2—C3 | −0.6 (6) | N2—C10—C15—O3 | −1.0 (5) |
| N1—C1—C2—C3 | −178.6 (4) | C11—C10—C15—C14 | 0.2 (5) |
| C1—C2—C3—C4 | 0.4 (7) | N2—C10—C15—C14 | 179.1 (3) |
| C2—C3—C4—C5 | 0.1 (7) | O1—C7—N1—C1 | 1.2 (4) |
| C3—C4—C5—C6 | −0.5 (6) | S1—C7—N1—C1 | −177.6 (3) |
| C4—C5—C6—C1 | 0.3 (6) | C6—C1—N1—C7 | −0.9 (4) |
| C4—C5—C6—O1 | 178.3 (4) | C2—C1—N1—C7 | 177.2 (4) |
| C2—C1—C6—C5 | 0.3 (6) | O2—C9—N2—C10 | 0.9 (7) |
| N1—C1—C6—C5 | 178.7 (4) | C8—C9—N2—C10 | −178.8 (3) |
| C2—C1—C6—O1 | −178.1 (3) | C11—C10—N2—C9 | −10.6 (6) |
| N1—C1—C6—O1 | 0.3 (4) | C15—C10—N2—C9 | 170.5 (4) |
| S1—C8—C9—O2 | −88.1 (5) | N1—C7—O1—C6 | −1.1 (4) |
| S1—C8—C9—N2 | 91.6 (4) | S1—C7—O1—C6 | 177.9 (2) |
| C15—C10—C11—C12 | 0.5 (6) | C5—C6—O1—C7 | −177.9 (4) |
| N2—C10—C11—C12 | −178.3 (4) | C1—C6—O1—C7 | 0.4 (4) |
| C10—C11—C12—C13 | −1.0 (6) | C14—C15—O3—C16 | 4.8 (6) |
| C11—C12—C13—C14 | 0.7 (7) | C10—C15—O3—C16 | −175.1 (4) |
| C12—C13—C14—C15 | 0.1 (6) | N1—C7—S1—C8 | −0.8 (4) |
| C13—C14—C15—O3 | 179.7 (4) | O1—C7—S1—C8 | −179.7 (3) |
| C13—C14—C15—C10 | −0.5 (6) | C9—C8—S1—C7 | −87.7 (3) |
| C11—C10—C15—O3 | −180.0 (3) |
| H··· | ||||
| N2—H | 0.86 | 2.22 | 2.608 (4) | 107 |
| N2—H | 0.86 | 2.39 | 3.075 (4) | 136 |
| C8—H8 | 0.97 | 2.48 | 2.914 (5) | 107 |
| C11—H11···O2 | 0.93 | 2.28 | 2.869 (5) | 121 |
| C12—H12···O2i | 0.93 | 2.52 | 3.378 (6) | 153 |
| C13—H13··· | 0.93 | 2.89 | 3.634 (5) | 138 |