organic compounds
(E)-4-({[4-(Benzo[d]thiazol-2-yl)phenyl]imino}methyl)-N,N-diethylaniline
aDepartment of Chemistry, Anhui University, Hefei 230601, Peoples Republic of China and, Key Laboratory of Functional Inorganic Materials, Chemistry, Hefei 230601, People's Republic of China
*Correspondence e-mail: 329408172@qq.com
The title benzothiazole derivative molecule, C24H23N3S, is almost planar with the central benzene ring being inclined to the benzothiazole ring and the diethylaniline ring by 4.05 (13) and 5.05 (13)°, respectively. The conformation about the N=C bond is E. In the crystal, molecules are linked by C—H⋯π interactions, forming layers parallel to the ab plane.
Keywords: crystal structure; benzothiazole; Schiff base; C—H⋯π interactions.
CCDC reference: 1509540
Structure description
Benzothiazole derivatives are considered to be important because of their wide range of biological activities (Ali & Siddiqui, 2013). At the same time, their high and good planarity make them appropriate building blocks for the construction of optical materials (Wang et al., 2010). Herein, we report on the synthesis and of the title compound, a new benzothiazole derivative.
The molecular structure is illustrated in Fig. 1. The molecule is almost planar with the central benzene ring (C8–C13) being inclined to the benzothiazole ring (C15–C20; r.m.s. deviation = 0.021 Å) and the diethylaniline ring (C15–C20) by 4.05 (13) and 5.05 (13)°, respectively. The conformation about the N2=C14 bond is E.
In the crystal, molecules are linked by C—H⋯π interactions forming layers parallel to the ab plane (Table 1 and Fig. 2).
Synthesis and crystallization
4-(Diethylamino)salicylaldehyde (0.52 g, 2.7 mmol) was dissolved in 20 ml ethanol and added drop wise to a 20 ml ethanol solution of 4-(benzothiazol-2-yl)aniline (0.61 g, 2.7 mmol) with stirring. The mixture was stirred at room temperature, and then filtered. The filtrate was allow to evaporate slowly at room temperature and after one week, yellow block-like crystals were obtained (yield 62.0%).
Refinement
Crystal data, data collection and structure .
details are summarized in Table 2Structural data
CCDC reference: 1509540
https://doi.org/10.1107/S2414314616016217/su4082sup1.cif
contains datablocks I, Global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2414314616016217/su4082Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2414314616016217/su4082Isup3.cml
Data collection: SMART (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).C24H23N3S | F(000) = 408 |
Mr = 385.51 | Dx = 1.261 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71069 Å |
Hall symbol: P 2yb | Cell parameters from 2407 reflections |
a = 8.895 (5) Å | θ = 2.5–23.5° |
b = 7.648 (5) Å | µ = 0.17 mm−1 |
c = 15.091 (5) Å | T = 298 K |
β = 98.566 (5)° | Block, yellow |
V = 1015.2 (9) Å3 | 0.30 × 0.20 × 0.20 mm |
Z = 2 |
Bruker SMART CCD area detector diffractometer | 3278 independent reflections |
Radiation source: fine-focus sealed tube | 2690 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
phi scans | θmax = 25.0°, θmin = 1.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −10→10 |
Tmin = 0.950, Tmax = 0.966 | k = −8→9 |
7218 measured reflections | l = 0→17 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.044 | H-atom parameters constrained |
wR(F2) = 0.122 | w = 1/[σ2(Fo2) + (0.0719P)2 + 0.0425P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
3278 reflections | Δρmax = 0.23 e Å−3 |
256 parameters | Δρmin = −0.18 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 1363 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.27 (10) |
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. |
x | y | z | Uiso*/Ueq | ||
S1 | 1.41511 (8) | 0.16492 (14) | 1.18673 (5) | 0.0654 (3) | |
N1 | 1.2597 (3) | 0.3273 (4) | 1.29530 (16) | 0.0583 (6) | |
N2 | 0.7097 (3) | 0.2212 (3) | 0.96102 (15) | 0.0578 (7) | |
N3 | 0.0747 (3) | 0.2513 (4) | 0.69361 (15) | 0.0600 (6) | |
C1 | 1.4589 (4) | 0.3630 (6) | 1.4264 (2) | 0.0781 (11) | |
H1 | 1.3944 | 0.4240 | 1.4586 | 0.094* | |
C2 | 1.6035 (5) | 0.3290 (7) | 1.4630 (2) | 0.0928 (13) | |
H2 | 1.6383 | 0.3681 | 1.5207 | 0.111* | |
C3 | 1.7014 (4) | 0.2380 (6) | 1.4172 (3) | 0.0945 (14) | |
H3 | 1.7999 | 0.2151 | 1.4451 | 0.113* | |
C4 | 1.6555 (3) | 0.1801 (6) | 1.3303 (2) | 0.0773 (10) | |
H4 | 1.7214 | 0.1199 | 1.2988 | 0.093* | |
C5 | 1.5068 (3) | 0.2160 (4) | 1.2925 (2) | 0.0602 (8) | |
C6 | 1.4073 (3) | 0.3051 (4) | 1.33936 (19) | 0.0588 (8) | |
C7 | 1.2487 (3) | 0.2597 (4) | 1.21464 (17) | 0.0483 (6) | |
C8 | 1.1075 (3) | 0.2557 (4) | 1.15066 (17) | 0.0462 (6) | |
C9 | 0.9747 (3) | 0.3337 (4) | 1.17029 (18) | 0.0536 (7) | |
H9 | 0.9753 | 0.3904 | 1.2249 | 0.064* | |
C10 | 0.8426 (3) | 0.3278 (4) | 1.10960 (18) | 0.0560 (7) | |
H10 | 0.7556 | 0.3824 | 1.1233 | 0.067* | |
C11 | 0.8375 (3) | 0.2414 (4) | 1.02829 (17) | 0.0490 (6) | |
C12 | 0.9689 (3) | 0.1634 (5) | 1.00924 (17) | 0.0541 (7) | |
H12 | 0.9677 | 0.1055 | 0.9550 | 0.065* | |
C13 | 1.1012 (3) | 0.1698 (5) | 1.06886 (17) | 0.0562 (7) | |
H13 | 1.1881 | 0.1159 | 1.0544 | 0.067* | |
C14 | 0.5823 (3) | 0.2863 (4) | 0.96753 (18) | 0.0551 (7) | |
H14 | 0.5718 | 0.3493 | 1.0190 | 0.066* | |
C15 | 0.4502 (3) | 0.2683 (4) | 0.89868 (17) | 0.0470 (6) | |
C16 | 0.3150 (3) | 0.3497 (4) | 0.90676 (19) | 0.0567 (7) | |
H16 | 0.3071 | 0.4113 | 0.9590 | 0.068* | |
C17 | 0.1925 (3) | 0.3434 (4) | 0.84128 (18) | 0.0530 (7) | |
H17 | 0.1032 | 0.3998 | 0.8500 | 0.064* | |
C18 | 0.1979 (3) | 0.2539 (4) | 0.76100 (17) | 0.0482 (6) | |
C19 | 0.3333 (3) | 0.1671 (5) | 0.75167 (17) | 0.0532 (6) | |
H19 | 0.3405 | 0.1053 | 0.6994 | 0.064* | |
C20 | 0.4569 (3) | 0.1725 (5) | 0.81967 (18) | 0.0548 (7) | |
H20 | 0.5452 | 0.1120 | 0.8130 | 0.066* | |
C21 | −0.0560 (3) | 0.3699 (5) | 0.6928 (2) | 0.0655 (9) | |
H21A | −0.0899 | 0.4077 | 0.6318 | 0.079* | |
H21B | −0.0234 | 0.4729 | 0.7281 | 0.079* | |
C22 | −0.1861 (4) | 0.2892 (6) | 0.7288 (2) | 0.0884 (12) | |
H22A | −0.2191 | 0.1870 | 0.6944 | 0.133* | |
H22B | −0.2682 | 0.3716 | 0.7251 | 0.133* | |
H22C | −0.1550 | 0.2568 | 0.7903 | 0.133* | |
C23 | 0.0718 (3) | 0.1430 (5) | 0.61427 (18) | 0.0647 (9) | |
H23A | −0.0327 | 0.1119 | 0.5921 | 0.078* | |
H23B | 0.1269 | 0.0356 | 0.6309 | 0.078* | |
C24 | 0.1398 (4) | 0.2295 (6) | 0.5403 (2) | 0.0914 (13) | |
H24A | 0.0835 | 0.3337 | 0.5217 | 0.137* | |
H24B | 0.1355 | 0.1508 | 0.4905 | 0.137* | |
H24C | 0.2437 | 0.2595 | 0.5614 | 0.137* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0536 (4) | 0.0666 (5) | 0.0750 (5) | 0.0054 (4) | 0.0065 (3) | −0.0112 (5) |
N1 | 0.0498 (14) | 0.0609 (16) | 0.0624 (14) | −0.0015 (12) | 0.0022 (11) | 0.0012 (12) |
N2 | 0.0528 (14) | 0.0632 (19) | 0.0567 (14) | 0.0001 (12) | 0.0060 (10) | 0.0011 (12) |
N3 | 0.0488 (13) | 0.0723 (17) | 0.0558 (13) | 0.0090 (13) | −0.0018 (10) | −0.0137 (13) |
C1 | 0.074 (2) | 0.099 (3) | 0.0584 (19) | −0.017 (2) | −0.0003 (16) | −0.0030 (18) |
C2 | 0.097 (3) | 0.109 (3) | 0.064 (2) | −0.024 (3) | −0.016 (2) | 0.011 (2) |
C3 | 0.062 (2) | 0.095 (3) | 0.114 (3) | −0.016 (2) | −0.027 (2) | 0.038 (3) |
C4 | 0.0561 (18) | 0.071 (2) | 0.103 (3) | 0.000 (2) | 0.0046 (17) | 0.008 (2) |
C5 | 0.0527 (16) | 0.052 (2) | 0.0737 (19) | −0.0072 (14) | 0.0014 (14) | 0.0095 (14) |
C6 | 0.0565 (17) | 0.060 (2) | 0.0586 (16) | −0.0093 (15) | 0.0049 (13) | 0.0057 (15) |
C7 | 0.0511 (15) | 0.0399 (15) | 0.0534 (15) | −0.0045 (13) | 0.0058 (12) | −0.0006 (13) |
C8 | 0.0434 (14) | 0.0407 (15) | 0.0537 (14) | −0.0021 (13) | 0.0047 (11) | 0.0032 (13) |
C9 | 0.0520 (16) | 0.0570 (18) | 0.0510 (15) | 0.0000 (14) | 0.0046 (12) | −0.0054 (14) |
C10 | 0.0467 (15) | 0.062 (2) | 0.0584 (16) | 0.0064 (14) | 0.0067 (13) | −0.0047 (15) |
C11 | 0.0504 (15) | 0.0471 (16) | 0.0485 (14) | −0.0050 (13) | 0.0035 (11) | 0.0045 (13) |
C12 | 0.0539 (15) | 0.0604 (17) | 0.0473 (13) | −0.0001 (17) | 0.0048 (11) | −0.0094 (15) |
C13 | 0.0511 (14) | 0.0612 (17) | 0.0563 (15) | 0.0068 (17) | 0.0082 (11) | −0.0067 (17) |
C14 | 0.0623 (19) | 0.0495 (19) | 0.0526 (15) | −0.0010 (15) | 0.0057 (13) | −0.0013 (14) |
C15 | 0.0484 (15) | 0.0424 (16) | 0.0499 (14) | −0.0065 (13) | 0.0060 (11) | 0.0007 (13) |
C16 | 0.0598 (18) | 0.0551 (19) | 0.0555 (16) | 0.0039 (15) | 0.0098 (13) | −0.0068 (14) |
C17 | 0.0475 (15) | 0.0539 (18) | 0.0572 (16) | 0.0046 (14) | 0.0061 (13) | −0.0097 (15) |
C18 | 0.0488 (15) | 0.0451 (15) | 0.0508 (15) | −0.0004 (13) | 0.0074 (11) | 0.0000 (14) |
C19 | 0.0498 (14) | 0.0565 (16) | 0.0532 (14) | 0.0034 (17) | 0.0076 (11) | −0.0069 (16) |
C20 | 0.0428 (13) | 0.0542 (16) | 0.0693 (17) | 0.0049 (15) | 0.0146 (12) | 0.0076 (17) |
C21 | 0.0592 (19) | 0.069 (2) | 0.0660 (19) | 0.0069 (17) | 0.0019 (15) | −0.0037 (16) |
C22 | 0.072 (2) | 0.100 (3) | 0.097 (3) | −0.003 (2) | 0.0224 (19) | −0.009 (2) |
C23 | 0.0601 (17) | 0.074 (2) | 0.0579 (16) | 0.0041 (18) | 0.0008 (13) | −0.0168 (18) |
C24 | 0.100 (3) | 0.113 (4) | 0.064 (2) | 0.003 (3) | 0.0193 (19) | −0.004 (2) |
S1—C5 | 1.725 (3) | C12—C13 | 1.372 (3) |
S1—C7 | 1.755 (3) | C12—H12 | 0.9300 |
N1—C7 | 1.313 (4) | C13—H13 | 0.9300 |
N1—C6 | 1.390 (4) | C14—C15 | 1.454 (4) |
N2—C14 | 1.255 (4) | C14—H14 | 0.9300 |
N2—C11 | 1.415 (3) | C15—C16 | 1.376 (4) |
N3—C18 | 1.379 (3) | C15—C20 | 1.408 (4) |
N3—C23 | 1.453 (4) | C16—C17 | 1.358 (4) |
N3—C21 | 1.474 (4) | C16—H16 | 0.9300 |
C1—C2 | 1.348 (5) | C17—C18 | 1.398 (4) |
C1—C6 | 1.397 (4) | C17—H17 | 0.9300 |
C1—H1 | 0.9300 | C18—C19 | 1.401 (4) |
C2—C3 | 1.377 (6) | C19—C20 | 1.388 (3) |
C2—H2 | 0.9300 | C19—H19 | 0.9300 |
C3—C4 | 1.387 (5) | C20—H20 | 0.9300 |
C3—H3 | 0.9300 | C21—C22 | 1.483 (5) |
C4—C5 | 1.388 (4) | C21—H21A | 0.9700 |
C4—H4 | 0.9300 | C21—H21B | 0.9700 |
C5—C6 | 1.391 (4) | C22—H22A | 0.9600 |
C7—C8 | 1.466 (4) | C22—H22B | 0.9600 |
C8—C13 | 1.392 (4) | C22—H22C | 0.9600 |
C8—C9 | 1.394 (4) | C23—C24 | 1.500 (5) |
C9—C10 | 1.379 (4) | C23—H23A | 0.9700 |
C9—H9 | 0.9300 | C23—H23B | 0.9700 |
C10—C11 | 1.388 (4) | C24—H24A | 0.9600 |
C10—H10 | 0.9300 | C24—H24B | 0.9600 |
C11—C12 | 1.380 (4) | C24—H24C | 0.9600 |
C5—S1—C7 | 89.09 (14) | N2—C14—C15 | 123.3 (3) |
C7—N1—C6 | 109.3 (2) | N2—C14—H14 | 118.3 |
C14—N2—C11 | 122.6 (2) | C15—C14—H14 | 118.3 |
C18—N3—C23 | 122.0 (2) | C16—C15—C20 | 117.3 (2) |
C18—N3—C21 | 122.4 (2) | C16—C15—C14 | 121.2 (3) |
C23—N3—C21 | 115.3 (2) | C20—C15—C14 | 121.5 (2) |
C2—C1—C6 | 118.9 (4) | C17—C16—C15 | 122.5 (3) |
C2—C1—H1 | 120.5 | C17—C16—H16 | 118.8 |
C6—C1—H1 | 120.5 | C15—C16—H16 | 118.8 |
C1—C2—C3 | 121.9 (4) | C16—C17—C18 | 121.3 (3) |
C1—C2—H2 | 119.1 | C16—C17—H17 | 119.3 |
C3—C2—H2 | 119.1 | C18—C17—H17 | 119.3 |
C2—C3—C4 | 121.1 (3) | N3—C18—C17 | 121.3 (2) |
C2—C3—H3 | 119.5 | N3—C18—C19 | 121.3 (2) |
C4—C3—H3 | 119.5 | C17—C18—C19 | 117.4 (2) |
C3—C4—C5 | 117.0 (4) | C20—C19—C18 | 120.7 (3) |
C3—C4—H4 | 121.5 | C20—C19—H19 | 119.7 |
C5—C4—H4 | 121.5 | C18—C19—H19 | 119.7 |
C4—C5—C6 | 121.8 (3) | C19—C20—C15 | 120.8 (3) |
C4—C5—S1 | 128.8 (3) | C19—C20—H20 | 119.6 |
C6—C5—S1 | 109.4 (2) | C15—C20—H20 | 119.6 |
N1—C6—C5 | 116.3 (3) | N3—C21—C22 | 113.5 (3) |
N1—C6—C1 | 124.4 (3) | N3—C21—H21A | 108.9 |
C5—C6—C1 | 119.2 (3) | C22—C21—H21A | 108.9 |
N1—C7—C8 | 123.9 (2) | N3—C21—H21B | 108.9 |
N1—C7—S1 | 115.9 (2) | C22—C21—H21B | 108.9 |
C8—C7—S1 | 120.3 (2) | H21A—C21—H21B | 107.7 |
C13—C8—C9 | 117.9 (2) | C21—C22—H22A | 109.5 |
C13—C8—C7 | 120.7 (2) | C21—C22—H22B | 109.5 |
C9—C8—C7 | 121.4 (2) | H22A—C22—H22B | 109.5 |
C10—C9—C8 | 120.7 (3) | C21—C22—H22C | 109.5 |
C10—C9—H9 | 119.7 | H22A—C22—H22C | 109.5 |
C8—C9—H9 | 119.7 | H22B—C22—H22C | 109.5 |
C9—C10—C11 | 121.0 (3) | N3—C23—C24 | 113.7 (3) |
C9—C10—H10 | 119.5 | N3—C23—H23A | 108.8 |
C11—C10—H10 | 119.5 | C24—C23—H23A | 108.8 |
C12—C11—C10 | 118.2 (2) | N3—C23—H23B | 108.8 |
C12—C11—N2 | 114.7 (2) | C24—C23—H23B | 108.8 |
C10—C11—N2 | 127.1 (3) | H23A—C23—H23B | 107.7 |
C13—C12—C11 | 121.2 (3) | C23—C24—H24A | 109.5 |
C13—C12—H12 | 119.4 | C23—C24—H24B | 109.5 |
C11—C12—H12 | 119.4 | H24A—C24—H24B | 109.5 |
C12—C13—C8 | 121.0 (3) | C23—C24—H24C | 109.5 |
C12—C13—H13 | 119.5 | H24A—C24—H24C | 109.5 |
C8—C13—H13 | 119.5 | H24B—C24—H24C | 109.5 |
C6—C1—C2—C3 | −0.4 (6) | C14—N2—C11—C12 | −179.0 (3) |
C1—C2—C3—C4 | 1.2 (7) | C14—N2—C11—C10 | 1.9 (5) |
C2—C3—C4—C5 | −0.8 (6) | C10—C11—C12—C13 | 0.3 (5) |
C3—C4—C5—C6 | −0.4 (5) | N2—C11—C12—C13 | −178.9 (3) |
C3—C4—C5—S1 | 179.3 (3) | C11—C12—C13—C8 | −0.1 (6) |
C7—S1—C5—C4 | 178.3 (3) | C9—C8—C13—C12 | 0.5 (5) |
C7—S1—C5—C6 | −2.0 (2) | C7—C8—C13—C12 | 179.1 (3) |
C7—N1—C6—C5 | −1.7 (4) | C11—N2—C14—C15 | 179.4 (3) |
C7—N1—C6—C1 | 179.5 (3) | N2—C14—C15—C16 | −176.6 (3) |
C4—C5—C6—N1 | −177.7 (3) | N2—C14—C15—C20 | 1.0 (5) |
S1—C5—C6—N1 | 2.6 (3) | C20—C15—C16—C17 | −1.6 (5) |
C4—C5—C6—C1 | 1.2 (5) | C14—C15—C16—C17 | 176.1 (3) |
S1—C5—C6—C1 | −178.6 (3) | C15—C16—C17—C18 | −0.5 (5) |
C2—C1—C6—N1 | 178.0 (4) | C23—N3—C18—C17 | −172.8 (3) |
C2—C1—C6—C5 | −0.8 (5) | C21—N3—C18—C17 | 13.3 (5) |
C6—N1—C7—C8 | 178.2 (3) | C23—N3—C18—C19 | 7.3 (5) |
C6—N1—C7—S1 | 0.1 (3) | C21—N3—C18—C19 | −166.7 (3) |
C5—S1—C7—N1 | 1.2 (3) | C16—C17—C18—N3 | −178.3 (3) |
C5—S1—C7—C8 | −177.0 (2) | C16—C17—C18—C19 | 1.6 (5) |
N1—C7—C8—C13 | −175.0 (3) | N3—C18—C19—C20 | 179.3 (3) |
S1—C7—C8—C13 | 3.1 (4) | C17—C18—C19—C20 | −0.7 (5) |
N1—C7—C8—C9 | 3.5 (4) | C18—C19—C20—C15 | −1.4 (5) |
S1—C7—C8—C9 | −178.4 (2) | C16—C15—C20—C19 | 2.5 (5) |
C13—C8—C9—C10 | −1.0 (4) | C14—C15—C20—C19 | −175.2 (3) |
C7—C8—C9—C10 | −179.6 (3) | C18—N3—C21—C22 | −97.4 (4) |
C8—C9—C10—C11 | 1.2 (5) | C23—N3—C21—C22 | 88.3 (3) |
C9—C10—C11—C12 | −0.8 (5) | C18—N3—C23—C24 | −87.5 (4) |
C9—C10—C11—N2 | 178.3 (3) | C21—N3—C23—C24 | 86.9 (3) |
Cg is the centroid of the C8–C13 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C12—H12···Cgi | 0.93 | 2.88 | 3.577 (5) | 133 |
C17—H17···Cgii | 0.93 | 2.93 | 3.646 (4) | 135 |
Symmetry codes: (i) −x+2, y−1/2, −z+2; (ii) −x+1, y+1/2, −z+2. |
Acknowledgements
This work was supported by the Graduate Students Innovative Program of Anhui University (grant Nos. J18515024, J18515019 and 201310357155).
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