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Acta Cryst. (2008). E64, o754    [ doi:10.1107/S160053680800771X ]

3-(2-Chloroanilino)isobenzofuran-1(3H)-one

M. Odabasoglu and O. Büyükgüngör

Abstract top

In the molecule of the title compound, C14H10ClNO2, the essentially planar phthalide group is oriented at a dihedral angle of 59.43 (4)° with respect to the substituted aromatic ring. In the crystal structure, intermolecular C-H...O and N-H...O hydrogen bonds link the molecules, generating R44(21) ring motifs to form a three-dimensional network.

Comment top

Phthalides (isobenzofuranones) are five-membered lactones found in plants and they are known to show diverse biological activities, such as fungicidal, bactericidal, herbicidal, analgesic, pesticidal, hypotensive and vasorelaxant activities (Aoki et al., 1973; Tsi & Tan, 1997; Roy & Sarkar, 2005). In addition, phthalide derivatives are useful in the treatment of circulatory and heart-related diseases (Bellasio, 1974). As part of our ongoing research on 3-substituted phthalides, the title compound, (I), has been synthesized and its crystal structure is reported here.

In the molecule of (I), (Fig. 1), rings A (C2-C7), B (C1/C2/C7/C8/O2) and C (C9-C14) are, of course, planar. The dihedral angles between them are A/B = 2.45 (4)°, A/C = 59.93 (4)° and B/C = 58.90 (4)°. So, rings A and B are also nearly coplanar. Ring C is oriented with respect to the coplanar ring system at a dihedral angle of 59.43 (4)°. The geometry of (I) does not show any significant difference from the average geometry found for 3-(4-chloroanilino)isobenzofuran-1(3H)-one (Büyükgüngör & Odabaşoğlu, 2006).

In the crystal structure, intermolecular C-H···O and N-H···O hydrogen bonds (Table 1) link the molecules, generating R44(21) (Fig. 2) ring motifs (Bernstein et al., 1995; Etter, 1990), to form a three-dimensional network, in which they may be effective in the stabilization of the structure.

Related literature top

For general background, see: Aoki et al. (1973, 1974); Tsi & Tan (1997); Roy & Sarkar (2005); Bellasio (1974, 1975). For related structures, see: Büyükgüngör & Odabaşoğlu (2006); Odabaşoğlu & Büyükgüngör (2006). For ring motif details, see: Bernstein et al. (1995); Etter (1990).

Experimental top

The title compound was prepared according to the method described by Odabaşoğlu & Büyükgüngör (2006), using phthalaldehydic acid and 2-chloroaniline as starting materials (yield; 84%). Crystals of (I) suitable for X-ray analysis were obtained by slow evaporation of an ethanol-DMF (1:1) solution at room temperature.

Refinement top

H atom (for NH) was located in difference synthesis and refined freely [N-H = 0.84 (3) Å and Uiso(H) = 0.061 (6) Å2]. The remaining H atoms were positioned geometrically, with C-H = 0.93 and 0.98 Å for aromatic and methine H, respectively, and constrained to ride on their parent atoms with Uiso(H) = 1.2Ueq(C).

Computing details top

Data collection: X-AREA (Stoe & Cie, 2002); cell refinement: 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).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level.
[Figure 2] Fig. 2. A partial packing diagram of (I), showing the formation of R44(21) ring motif. Hydrogen bonds are shown as dashed lines [symmetry codes: (i) x - 1/2, 1 - y, z - 1/2; (ii) x - 1, y, z; (iii) x, 1 - y, 1/2 + z]. H atoms not involved in hydrogen bondings have been omitted for clarity.
3-(2-chloroanilino)isobenzofuran-1(3H)-one top
Crystal data top
C14H10ClNO2F000 = 536
Mr = 259.68Dx = 1.385 Mg m−3
Monoclinic, CcMo Kα radiation
λ = 0.71073 Å
Hall symbol: C -2ycCell parameters from 7423 reflections
a = 9.2485 (8) Åθ = 1.8–28.0º
b = 22.7915 (13) ŵ = 0.30 mm−1
c = 7.1111 (6) ÅT = 296 K
β = 123.823 (6)ºPrism, colorless
V = 1245.25 (19) Å30.51 × 0.34 × 0.11 mm
Z = 4
Data collection top
Stoe IPDS II
diffractometer		2433 independent reflections
Monochromator: plane graphite2200 reflections with I > 2σ(I)
Detector resolution: 6.67 pixels mm-1Rint = 0.038
T = 296 Kθmax = 26.0º
w–scan rotation methodθmin = 1.8º
Absorption correction: integration
(X-RED32; Stoe & Cie, 2002)		h = −11→11
Tmin = 0.880, Tmax = 0.969k = −28→28
7423 measured reflectionsl = −8→8
Refinement top
Refinement on F2Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: fullH atoms treated by a mixture of
independent and constrained refinement
R[F2 > 2σ(F2)] = 0.029  w = 1/[σ2(Fo2) + (0.0412P)2]
where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.067(Δ/σ)max < 0.001
S = 1.05Δρmax = 0.12 e Å−3
2433 reflectionsΔρmin = −0.15 e Å−3
168 parametersExtinction correction: none
2 restraintsAbsolute structure: Flack (1983), with 1205 Friedel pairs
Primary atom site location: structure-invariant direct methodsFlack parameter: 0.01 (5)
Secondary atom site location: difference Fourier map
Crystal data top
C14H10ClNO2V = 1245.25 (19) Å3
Mr = 259.68Z = 4
Monoclinic, CcMo Kα
a = 9.2485 (8) ŵ = 0.30 mm−1
b = 22.7915 (13) ÅT = 296 K
c = 7.1111 (6) Å0.51 × 0.34 × 0.11 mm
β = 123.823 (6)º
Data collection top
Stoe IPDS II
diffractometer		2433 independent reflections
Absorption correction: integration
(X-RED32; Stoe & Cie, 2002)		2200 reflections with I > 2σ(I)
Tmin = 0.880, Tmax = 0.969Rint = 0.038
7423 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.029H atoms treated by a mixture of
independent and constrained refinement
wR(F2) = 0.067Δρmax = 0.12 e Å−3
S = 1.05Δρmin = −0.15 e Å−3
2433 reflectionsAbsolute structure: Flack (1983), with 1205 Friedel pairs
168 parametersFlack parameter: 0.01 (5)
2 restraints
Special details top

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 > 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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Cl10.32584 (7)0.29431 (2)−0.03793 (8)0.06502 (16)
O10.48884 (19)0.56863 (6)0.4723 (2)0.0568 (4)
O20.43774 (16)0.47290 (5)0.4752 (2)0.0462 (3)
N10.4488 (2)0.37749 (6)0.3398 (3)0.0446 (3)
H10.462 (3)0.3829 (10)0.233 (5)0.061 (6)*
C10.5400 (2)0.51868 (7)0.5030 (3)0.0418 (4)
C20.7123 (2)0.49617 (8)0.5728 (3)0.0401 (4)
C30.8602 (3)0.52646 (9)0.6291 (3)0.0507 (4)
H30.86040.56720.62090.061*
C41.0076 (3)0.49429 (11)0.6977 (3)0.0616 (5)
H41.10950.51340.73680.074*
C51.0055 (3)0.43377 (11)0.7092 (4)0.0622 (6)
H51.10680.41290.75680.075*
C60.8566 (3)0.40333 (9)0.6516 (3)0.0545 (5)
H60.85580.36260.65840.065*
C70.7097 (2)0.43588 (7)0.5838 (3)0.0404 (4)
C80.5336 (2)0.41624 (7)0.5234 (3)0.0400 (3)
H80.54560.39770.65580.048*
C90.2979 (2)0.34797 (7)0.2808 (3)0.0385 (4)
C100.2263 (3)0.30630 (8)0.1070 (3)0.0473 (4)
C110.0825 (3)0.27393 (9)0.0501 (3)0.0610 (6)
H110.03880.2462−0.06510.073*
C120.0027 (3)0.28242 (11)0.1632 (4)0.0678 (6)
H12−0.09590.26100.12350.081*
C130.0701 (3)0.32296 (9)0.3359 (4)0.0588 (5)
H130.01740.32850.41410.071*
C140.2156 (2)0.35546 (8)0.3937 (3)0.0488 (4)
H140.25920.38280.51010.059*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Cl10.0858 (4)0.0647 (3)0.0552 (2)−0.0121 (3)0.0459 (3)−0.0150 (2)
O10.0704 (10)0.0411 (7)0.0633 (8)0.0097 (6)0.0399 (8)0.0004 (6)
O20.0393 (6)0.0438 (7)0.0576 (7)0.0011 (5)0.0282 (6)−0.0031 (5)
N10.0508 (9)0.0446 (8)0.0439 (8)−0.0085 (7)0.0297 (7)−0.0057 (6)
C10.0468 (10)0.0416 (9)0.0371 (8)0.0008 (8)0.0234 (7)−0.0028 (7)
C20.0406 (9)0.0446 (9)0.0332 (8)−0.0032 (7)0.0192 (7)−0.0032 (6)
C30.0494 (11)0.0577 (11)0.0431 (8)−0.0141 (9)0.0245 (8)−0.0071 (8)
C40.0403 (11)0.0914 (16)0.0487 (11)−0.0170 (10)0.0221 (9)−0.0092 (10)
C50.0379 (10)0.0905 (17)0.0527 (11)0.0122 (10)0.0218 (9)0.0000 (10)
C60.0496 (11)0.0555 (11)0.0552 (10)0.0111 (9)0.0271 (9)0.0032 (9)
C70.0379 (9)0.0445 (9)0.0363 (8)0.0015 (7)0.0192 (7)−0.0013 (7)
C80.0408 (9)0.0381 (8)0.0404 (8)0.0015 (7)0.0220 (7)0.0001 (7)
C90.0399 (9)0.0313 (8)0.0405 (8)0.0008 (7)0.0201 (7)0.0033 (6)
C100.0552 (11)0.0431 (9)0.0378 (8)−0.0032 (8)0.0223 (8)−0.0001 (7)
C110.0629 (14)0.0537 (11)0.0523 (11)−0.0203 (10)0.0233 (10)−0.0118 (9)
C120.0591 (13)0.0671 (14)0.0748 (14)−0.0228 (10)0.0358 (12)−0.0053 (10)
C130.0551 (12)0.0593 (13)0.0726 (13)−0.0092 (10)0.0422 (11)−0.0001 (10)
C140.0535 (11)0.0456 (10)0.0522 (10)−0.0025 (8)0.0324 (9)−0.0022 (7)
Geometric parameters (Å, °) top
N1—H10.84 (3)C8—N11.400 (2)
C1—O11.205 (2)C8—O21.494 (2)
C1—O21.347 (2)C8—H80.9800
C1—C21.472 (3)C9—N11.387 (2)
C2—C71.377 (2)C9—C141.391 (2)
C2—C31.378 (3)C9—C101.399 (2)
C3—C41.376 (3)C10—C111.370 (3)
C3—H30.9300C10—Cl11.744 (2)
C4—C51.383 (4)C11—C121.375 (3)
C4—H40.9300C11—H110.9300
C5—C61.385 (3)C12—C131.377 (3)
C5—H50.9300C12—H120.9300
C6—C71.378 (3)C13—C141.383 (3)
C6—H60.9300C13—H130.9300
C7—C81.503 (3)C14—H140.9300
C1—O2—C8110.92 (13)N1—C8—O2112.25 (14)
C8—N1—H1117.4 (16)N1—C8—C7114.17 (15)
C9—N1—C8122.34 (16)O2—C8—C7102.62 (13)
C9—N1—H1115.2 (17)N1—C8—H8109.2
O1—C1—O2122.15 (17)O2—C8—H8109.2
O1—C1—C2129.22 (17)C7—C8—H8109.2
O2—C1—C2108.63 (14)N1—C9—C14123.22 (15)
C7—C2—C3121.94 (17)N1—C9—C10119.92 (15)
C7—C2—C1108.50 (15)C14—C9—C10116.80 (16)
C3—C2—C1129.53 (17)C11—C10—C9122.08 (18)
C4—C3—C2117.61 (19)C11—C10—Cl1119.09 (14)
C4—C3—H3121.2C9—C10—Cl1118.82 (14)
C2—C3—H3121.2C10—C11—C12120.02 (19)
C3—C4—C5120.61 (19)C10—C11—H11120.0
C3—C4—H4119.7C12—C11—H11120.0
C5—C4—H4119.7C11—C12—C13119.48 (19)
C4—C5—C6121.76 (19)C11—C12—H12120.3
C4—C5—H5119.1C13—C12—H12120.3
C6—C5—H5119.1C12—C13—C14120.4 (2)
C7—C6—C5117.26 (19)C12—C13—H13119.8
C7—C6—H6121.4C14—C13—H13119.8
C5—C6—H6121.4C13—C14—C9121.18 (17)
C2—C7—C6120.82 (17)C13—C14—H14119.4
C2—C7—C8109.32 (14)C9—C14—H14119.4
C6—C7—C8129.80 (16)
O1—C1—O2—C8179.77 (16)C2—C7—C8—O20.52 (17)
C2—C1—O2—C8−0.24 (16)C6—C7—C8—O2177.69 (17)
O1—C1—C2—C7−179.43 (17)N1—C8—O2—C1−123.18 (15)
O2—C1—C2—C70.59 (17)C7—C8—O2—C1−0.16 (16)
O1—C1—C2—C32.8 (3)O2—C8—N1—C9−73.5 (2)
O2—C1—C2—C3−177.14 (15)C7—C8—N1—C9170.20 (15)
C7—C2—C3—C40.0 (3)C14—C9—N1—C81.9 (3)
C1—C2—C3—C4177.43 (17)C10—C9—N1—C8−174.97 (15)
C2—C3—C4—C50.0 (3)N1—C9—C10—C11176.68 (18)
C3—C4—C5—C60.3 (3)C14—C9—C10—C11−0.3 (2)
C4—C5—C6—C7−0.5 (3)N1—C9—C10—Cl1−2.1 (2)
C3—C2—C7—C6−0.2 (3)C14—C9—C10—Cl1−179.13 (13)
C1—C2—C7—C6−178.15 (15)C9—C10—C11—C120.8 (3)
C3—C2—C7—C8177.25 (14)Cl1—C10—C11—C12179.56 (18)
C1—C2—C7—C8−0.68 (18)C10—C11—C12—C13−1.0 (4)
C5—C6—C7—C20.5 (3)C11—C12—C13—C140.8 (4)
C5—C6—C7—C8−176.40 (17)C12—C13—C14—C9−0.3 (3)
C2—C7—C8—N1122.25 (16)N1—C9—C14—C13−176.81 (18)
C6—C7—C8—N1−60.6 (2)C10—C9—C14—C130.1 (3)
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.84 (3)2.29 (3)3.091 (2)159 (2)
C4—H4···O2ii0.932.543.397 (2)153
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x+1, −y+1, z+1/2.
Table 1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O1i0.84 (3)2.29 (3)3.091 (2)159 (2)
C4—H4···O2ii0.932.543.397 (2)153
Symmetry codes: (i) x, −y+1, z−1/2; (ii) x+1, −y+1, z+1/2.
Acknowledgements top

The authors acknowledge the Faculty of Arts and Sciences, Ondokuz Mayıs University, Turkey, for the use of the Stoe IPDS II diffractometer (purchased under grant F.279 of the University Research Fund).

references
References top

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