organic compounds
(E)-2-[(2,4-Dichlorophenyl)iminomethyl]benzene-1,4-diol monohydrate
aDepartment of Physics, Faculty of Arts and Sciences, Ondokuz Mayıs University, Kurupelit, TR-55139 Samsun, Turkey, and bDepartment of Chemistry, Faculty of Arts and Sciences, Ondokuz Mayıs University, TR-55139 Samsun, Turkey
*Correspondence e-mail: sgul@omu.edu.tr
The title compound, C13H9Cl2NO2·H2O, represents a Schiff base which adopts the phenol–imine tautomeric form in the solid state. The molecule is approximately planar (r.m.s. deviation 0.0818 Å), and the dihedral angle between the two aromatic rings is 7.46 (12)°. An O—H⋯N interaction generates an S(6) ring. In the crystal, molecules are linked by intermolecular O—H⋯O hydrogen bonds involving the solvent water molecule, forming chains.
Related literature
For the biological properties of et al. (1975), Dao et al. (2000). For the coordination chemistry of see: Kargar et al. (2009); Yeap et al. (2009). For a discussion of see: Şahin et al. (2005); Hadjoudis et al. (1987). For a related structure, see: Zhang (2009).
see: LozierExperimental
Crystal data
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Refinement
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Data collection: X-AREA (Stoe & Cie, 2002); cell X-AREA; data reduction: X-RED32; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
10.1107/S1600536809045103/bh2254sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809045103/bh2254Isup2.hkl
The compound (E)-2-[(2,4-(dichloro)phenylimino)methyl]-4-hydroxyphenol monohydrate was prepared by refluxing a solution containing 2,5-dihydroxybenzaldehyde (0.03 g, 0.22 mmol) in ethanol (20 ml) and 2,4-dichloroaniline (0.035 g, 0.22 mmol) in ethanol (20 ml). The reaction mixture was stirred for 1 h under reflux. The crystals of the title hydrate suitable for X-ray analysis were obtained from ethanol by slow evaporation (yield 73%; m.p. 432–435 K).
H atoms bonded to O atoms were located in a difference map and refined freely (distances given in Table 1). All other H atoms were placed in calculated positions and constrained to ride on their parent atoms, with C—H = 0.93 Å and Uiso(H)=1.2Ueq(Carrier C).
Data collection: X-AREA (Stoe & Cie, 2002); cell
X-AREA (Stoe & Cie, 2002); data reduction: X-RED32 (Stoe & Cie, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).C13H9Cl2NO2·H2O | F(000) = 616 |
Mr = 300.13 | Dx = 1.517 Mg m−3 |
Monoclinic, P21/c | Melting point: 432 K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71069 Å |
a = 4.6899 (2) Å | Cell parameters from 12355 reflections |
b = 17.4289 (6) Å | θ = 1.3–27.2° |
c = 16.1645 (7) Å | µ = 0.50 mm−1 |
β = 95.923 (3)° | T = 296 K |
V = 1314.23 (9) Å3 | Prism, brown |
Z = 4 | 0.90 × 0.56 × 0.25 mm |
Stoe IPDS II diffractometer | 2585 independent reflections |
Radiation source: fine-focus sealed tube | 1879 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.050 |
Detector resolution: 6.67 pixels mm-1 | θmax = 26.0°, θmin = 1.7° |
ω scans | h = −5→5 |
Absorption correction: integration (X-RED32; Stoe & Cie, 2002) | k = −21→21 |
Tmin = 0.801, Tmax = 0.959 | l = −19→19 |
11982 measured 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)] = 0.037 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.098 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.97 | w = 1/[σ2(Fo2) + (0.0595P)2] where P = (Fo2 + 2Fc2)/3 |
2585 reflections | (Δ/σ)max = 0.001 |
188 parameters | Δρmax = 0.14 e Å−3 |
0 restraints | Δρmin = −0.29 e Å−3 |
C13H9Cl2NO2·H2O | V = 1314.23 (9) Å3 |
Mr = 300.13 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 4.6899 (2) Å | µ = 0.50 mm−1 |
b = 17.4289 (6) Å | T = 296 K |
c = 16.1645 (7) Å | 0.90 × 0.56 × 0.25 mm |
β = 95.923 (3)° |
Stoe IPDS II diffractometer | 2585 independent reflections |
Absorption correction: integration (X-RED32; Stoe & Cie, 2002) | 1879 reflections with I > 2σ(I) |
Tmin = 0.801, Tmax = 0.959 | Rint = 0.050 |
11982 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 0 restraints |
wR(F2) = 0.098 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.97 | Δρmax = 0.14 e Å−3 |
2585 reflections | Δρmin = −0.29 e Å−3 |
188 parameters |
x | y | z | Uiso*/Ueq | ||
C1 | −0.2010 (4) | 0.11322 (10) | 0.62421 (11) | 0.0455 (4) | |
C2 | −0.3504 (4) | 0.09465 (12) | 0.54787 (12) | 0.0540 (5) | |
H2A | −0.3024 | 0.0502 | 0.5207 | 0.065* | |
C3 | −0.5665 (4) | 0.14033 (12) | 0.51181 (12) | 0.0556 (5) | |
C4 | −0.6388 (4) | 0.20661 (11) | 0.55258 (13) | 0.0554 (5) | |
H4 | −0.7851 | 0.2380 | 0.5287 | 0.066* | |
C5 | −0.4951 (5) | 0.22589 (11) | 0.62805 (13) | 0.0573 (5) | |
H5 | −0.5461 | 0.2702 | 0.6550 | 0.069* | |
C6 | −0.2748 (4) | 0.18020 (11) | 0.66461 (12) | 0.0510 (4) | |
C7 | 0.0230 (4) | 0.06279 (11) | 0.66080 (12) | 0.0485 (4) | |
H7 | 0.0640 | 0.0180 | 0.6331 | 0.058* | |
C8 | 0.3792 (4) | 0.03047 (10) | 0.76835 (11) | 0.0467 (4) | |
C9 | 0.4933 (4) | 0.04822 (11) | 0.84932 (12) | 0.0512 (4) | |
C10 | 0.7030 (4) | 0.00366 (12) | 0.89192 (13) | 0.0560 (5) | |
H11 | 0.7748 | 0.0162 | 0.9460 | 0.067* | |
C11 | 0.8040 (4) | −0.05934 (11) | 0.85325 (12) | 0.0518 (5) | |
C12 | 0.7014 (4) | −0.07811 (11) | 0.77313 (12) | 0.0547 (5) | |
H12 | 0.7737 | −0.1205 | 0.7473 | 0.066* | |
C13 | 0.4907 (4) | −0.03366 (11) | 0.73152 (12) | 0.0522 (5) | |
H13 | 0.4209 | −0.0467 | 0.6774 | 0.063* | |
N1 | 0.1649 (3) | 0.07852 (9) | 0.73022 (9) | 0.0492 (4) | |
O1 | −0.6995 (5) | 0.11940 (12) | 0.43607 (10) | 0.0909 (6) | |
H1 | −0.848 (8) | 0.148 (2) | 0.420 (2) | 0.121 (12)* | |
O2 | −0.1365 (4) | 0.20076 (10) | 0.73902 (10) | 0.0729 (5) | |
H2 | −0.007 (7) | 0.166 (2) | 0.751 (2) | 0.105 (10)* | |
O3 | −1.1524 (5) | 0.19928 (14) | 0.37204 (14) | 0.0930 (7) | |
H1O | −1.167 (7) | 0.232 (2) | 0.333 (2) | 0.112 (11)* | |
H2O | −1.317 (10) | 0.200 (3) | 0.385 (3) | 0.154 (17)* | |
Cl1 | 1.06563 (11) | −0.11630 (3) | 0.90637 (4) | 0.06643 (18) | |
Cl2 | 0.36487 (14) | 0.12696 (4) | 0.89962 (4) | 0.0773 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0467 (10) | 0.0449 (9) | 0.0457 (10) | −0.0009 (8) | 0.0091 (8) | 0.0010 (7) |
C2 | 0.0598 (12) | 0.0552 (10) | 0.0472 (10) | 0.0099 (9) | 0.0062 (9) | −0.0040 (9) |
C3 | 0.0594 (12) | 0.0662 (12) | 0.0413 (10) | 0.0084 (10) | 0.0053 (9) | 0.0013 (9) |
C4 | 0.0566 (11) | 0.0518 (11) | 0.0582 (12) | 0.0069 (9) | 0.0081 (10) | 0.0098 (9) |
C5 | 0.0635 (12) | 0.0437 (10) | 0.0648 (13) | 0.0071 (9) | 0.0073 (10) | −0.0036 (9) |
C6 | 0.0541 (11) | 0.0488 (10) | 0.0498 (10) | −0.0028 (9) | 0.0045 (9) | −0.0059 (8) |
C7 | 0.0508 (10) | 0.0473 (10) | 0.0477 (10) | 0.0023 (8) | 0.0068 (9) | −0.0016 (8) |
C8 | 0.0473 (10) | 0.0477 (10) | 0.0454 (10) | −0.0023 (8) | 0.0065 (8) | 0.0031 (8) |
C9 | 0.0502 (10) | 0.0521 (10) | 0.0508 (11) | −0.0012 (8) | 0.0033 (9) | −0.0053 (8) |
C10 | 0.0530 (12) | 0.0625 (12) | 0.0507 (11) | −0.0034 (9) | −0.0031 (9) | −0.0027 (9) |
C11 | 0.0452 (10) | 0.0530 (10) | 0.0569 (12) | −0.0043 (8) | 0.0030 (9) | 0.0063 (8) |
C12 | 0.0592 (12) | 0.0493 (10) | 0.0565 (12) | 0.0044 (9) | 0.0107 (10) | 0.0009 (9) |
C13 | 0.0607 (11) | 0.0525 (11) | 0.0432 (10) | 0.0021 (9) | 0.0046 (9) | −0.0015 (8) |
N1 | 0.0502 (8) | 0.0501 (9) | 0.0468 (9) | 0.0016 (7) | 0.0034 (7) | 0.0011 (7) |
O1 | 0.0986 (13) | 0.1152 (15) | 0.0533 (9) | 0.0486 (12) | −0.0184 (9) | −0.0210 (9) |
O2 | 0.0780 (11) | 0.0689 (10) | 0.0678 (10) | 0.0162 (9) | −0.0120 (8) | −0.0241 (8) |
O3 | 0.0771 (13) | 0.1106 (15) | 0.0906 (14) | 0.0109 (11) | 0.0047 (11) | 0.0506 (12) |
Cl1 | 0.0588 (3) | 0.0651 (3) | 0.0733 (4) | 0.0055 (2) | −0.0036 (3) | 0.0112 (2) |
Cl2 | 0.0850 (4) | 0.0770 (4) | 0.0669 (4) | 0.0199 (3) | −0.0065 (3) | −0.0257 (3) |
C1—C2 | 1.393 (3) | C8—C9 | 1.397 (3) |
C1—C6 | 1.398 (3) | C8—N1 | 1.401 (2) |
C1—C7 | 1.448 (3) | C9—C10 | 1.380 (3) |
C2—C3 | 1.371 (3) | C9—Cl2 | 1.734 (2) |
C2—H2A | 0.9300 | C10—C11 | 1.372 (3) |
C3—O1 | 1.365 (3) | C10—H11 | 0.9300 |
C3—C4 | 1.389 (3) | C11—C12 | 1.374 (3) |
C4—C5 | 1.373 (3) | C11—Cl1 | 1.735 (2) |
C4—H4 | 0.9300 | C12—C13 | 1.375 (3) |
C5—C6 | 1.388 (3) | C12—H12 | 0.9300 |
C5—H5 | 0.9300 | C13—H13 | 0.9300 |
C6—O2 | 1.354 (2) | O1—H1 | 0.87 (4) |
C7—N1 | 1.274 (2) | O2—H2 | 0.87 (4) |
C7—H7 | 0.9300 | O3—H1O | 0.85 (4) |
C8—C13 | 1.393 (3) | O3—H2O | 0.82 (4) |
C2—C1—C6 | 118.80 (17) | C13—C8—N1 | 125.12 (17) |
C2—C1—C7 | 119.88 (16) | C9—C8—N1 | 117.89 (16) |
C6—C1—C7 | 121.32 (17) | C10—C9—C8 | 121.82 (18) |
C3—C2—C1 | 121.61 (18) | C10—C9—Cl2 | 118.39 (16) |
C3—C2—H2A | 119.2 | C8—C9—Cl2 | 119.78 (15) |
C1—C2—H2A | 119.2 | C11—C10—C9 | 119.00 (19) |
O1—C3—C2 | 118.39 (18) | C11—C10—H11 | 120.5 |
O1—C3—C4 | 122.44 (19) | C9—C10—H11 | 120.5 |
C2—C3—C4 | 119.16 (19) | C10—C11—C12 | 121.10 (19) |
C5—C4—C3 | 120.22 (19) | C10—C11—Cl1 | 119.48 (16) |
C5—C4—H4 | 119.9 | C12—C11—Cl1 | 119.42 (16) |
C3—C4—H4 | 119.9 | C11—C12—C13 | 119.40 (18) |
C4—C5—C6 | 120.91 (18) | C11—C12—H12 | 120.3 |
C4—C5—H5 | 119.5 | C13—C12—H12 | 120.3 |
C6—C5—H5 | 119.5 | C12—C13—C8 | 121.69 (18) |
O2—C6—C5 | 119.58 (18) | C12—C13—H13 | 119.2 |
O2—C6—C1 | 121.12 (18) | C8—C13—H13 | 119.2 |
C5—C6—C1 | 119.30 (18) | C7—N1—C8 | 122.99 (16) |
N1—C7—C1 | 121.34 (17) | C3—O1—H1 | 113 (2) |
N1—C7—H7 | 119.3 | C6—O2—H2 | 106 (2) |
C1—C7—H7 | 119.3 | H1O—O3—H2O | 100 (4) |
C13—C8—C9 | 116.98 (18) | ||
C6—C1—C2—C3 | 0.0 (3) | N1—C8—C9—C10 | 179.39 (17) |
C7—C1—C2—C3 | 179.05 (17) | C13—C8—C9—Cl2 | −179.77 (14) |
C1—C2—C3—O1 | 178.63 (19) | N1—C8—C9—Cl2 | 0.9 (2) |
C1—C2—C3—C4 | −0.2 (3) | C8—C9—C10—C11 | 0.7 (3) |
O1—C3—C4—C5 | −178.8 (2) | Cl2—C9—C10—C11 | 179.20 (15) |
C2—C3—C4—C5 | 0.0 (3) | C9—C10—C11—C12 | 0.5 (3) |
C3—C4—C5—C6 | 0.5 (3) | C9—C10—C11—Cl1 | −179.49 (14) |
C4—C5—C6—O2 | 179.88 (19) | C10—C11—C12—C13 | −1.0 (3) |
C4—C5—C6—C1 | −0.7 (3) | Cl1—C11—C12—C13 | 178.96 (15) |
C2—C1—C6—O2 | 179.87 (18) | C11—C12—C13—C8 | 0.4 (3) |
C7—C1—C6—O2 | 0.8 (3) | C9—C8—C13—C12 | 0.7 (3) |
C2—C1—C6—C5 | 0.5 (3) | N1—C8—C13—C12 | −179.98 (17) |
C7—C1—C6—C5 | −178.58 (18) | C1—C7—N1—C8 | 178.71 (16) |
C2—C1—C7—N1 | 179.43 (17) | C13—C8—N1—C7 | 9.2 (3) |
C6—C1—C7—N1 | −1.5 (3) | C9—C8—N1—C7 | −171.48 (17) |
C13—C8—C9—C10 | −1.2 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H1O···O2i | 0.85 (4) | 1.94 (4) | 2.774 (3) | 170 (3) |
O2—H2···N1 | 0.87 (4) | 1.77 (3) | 2.569 (2) | 152 (3) |
O3—H2O···O1ii | 0.82 (4) | 2.49 (5) | 3.184 (3) | 143 (4) |
O1—H1···O3 | 0.87 (4) | 1.79 (4) | 2.659 (3) | 171 (3) |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) x−1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C13H9Cl2NO2·H2O |
Mr | 300.13 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 4.6899 (2), 17.4289 (6), 16.1645 (7) |
β (°) | 95.923 (3) |
V (Å3) | 1314.23 (9) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.50 |
Crystal size (mm) | 0.90 × 0.56 × 0.25 |
Data collection | |
Diffractometer | Stoe IPDS II diffractometer |
Absorption correction | Integration (X-RED32; Stoe & Cie, 2002) |
Tmin, Tmax | 0.801, 0.959 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11982, 2585, 1879 |
Rint | 0.050 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.037, 0.098, 0.97 |
No. of reflections | 2585 |
No. of parameters | 188 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.14, −0.29 |
Computer programs: X-AREA (Stoe & Cie, 2002), X-RED32 (Stoe & Cie, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999).
C6—O2 | 1.354 (2) | C9—Cl2 | 1.734 (2) |
C7—N1 | 1.274 (2) | C11—Cl1 | 1.735 (2) |
C8—N1 | 1.401 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H1O···O2i | 0.85 (4) | 1.94 (4) | 2.774 (3) | 170 (3) |
O2—H2···N1 | 0.87 (4) | 1.77 (3) | 2.569 (2) | 152 (3) |
O3—H2O···O1ii | 0.82 (4) | 2.49 (5) | 3.184 (3) | 143 (4) |
O1—H1···O3 | 0.87 (4) | 1.79 (4) | 2.659 (3) | 171 (3) |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) x−1, y, z. |
Acknowledgements
The authors wish to acknowledge the Faculty of Arts and Sciences, Ondokuz Mayıs University, Turkey, for providing access to the Stoe IPDS II diffractometer (purchased under grant No. F279 of the University Research Fund).
References
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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.
Schiff bases often exhibit various biological activities and in many cases were shown to have antibacterial, anticancer, anti-inflammatory and antitoxic properties (Lozier et al., 1975; Dao et al., 2000). Schiff bases have also been used as versatile ligands in coordination chemistry (Kargar et al., 2009; Yeap et al., 2009). There are two types of intramolecular hydrogen bonds in Schiff bases, which may be stabilized either in keto-amine (N—H···O hydrogen bond) (Şahin et al., 2005) or phenol-imine (N···H—O hydrogen bond) tautomeric forms (Hadjoudis et al., 1987). The present X-ray investigation shows that the title compound is a Schiff base and exists in the phenol-imine form in the solid-state.
An ORTEP-3 (Farrugia, 1997) plot and crystal packing of the molecule of the title compound are shown in Figs. 1 and 2, respectively. The molecule is approximately planar. The dihedral angle between the two aromatic rings is 7.46 (12)° and the C1—C7—N1—C8 torsion angle is 178.71 (16)°. All bond lengths are within normal values. An intramolecular O2—H2···N1 hydrogen bond (Table 1) is observed and this hydrogen bond produces S(6) ring. The O2···N1 separation of 2.569 (2) Å is comparable to those observed for analogous hydrogen bonds in 2-bromo-4-chloro-6-[(E)-p-tolylimino-methyl]phenol (Zhang, 2009). Molecules are linked into sheets by a combination of O—H···O hydrogen bonds (Table 1). The combination of O—H···O hydrogen bonds generates a chain of edge-fused R66(22) rings running parallel to the [100] direction (Fig. 2).