supplementary materials


HTML versionpdf versioncif file3d viewstructure factorssupplementary materialsCIF check reportsimilar papers Open access

hk2441 scheme

Acta Cryst. (2008). E64, o779    [ doi:10.1107/S1600536808008209 ]

3-(4-Methylpiperazin-1-yl)isobenzofuran-1(3H)-one

M. Odabasoglu and O. Büyükgüngör

Abstract top

In the molecule of the title compound, C13H16N2O2, the phthalide ring system is virtually planar, with a dihedral angle between the fused five- and six-membered rings of 1.17 (4)°. The methylpiperazine ring adopts a chair conformation. In the crystal structure, intermolecular C-H...O and C-H...N hydrogen bonds link the molecules, generating edge-fused R33(17) ring motifs, to form a three-dimensional network.

Comment top

The present work is part of a structural study of compounds of 3-substituted phthalides, and we report herein the structure of the title compound, (I).

In the molecule of (I), (Fig. 1), rings A (C2–C7) and B (C1/C2/C7/C8/O2) are, of course, planar. The dihedral angle between them is A/B = 1.17 (4)°. So, rings A and B are also nearly coplanar. Ring C (N1/N2/C9–C12) is not planar, having total puckering amplitude, QT, of 1.014 (3) Å. It adopts chair [φ = 29.44 (2)° and θ = 59.51 (3)°] conformation (Cremer & Pople, 1975).

In the crystal structure, intermolecular C—H···O and C—H···N hydrogen bonds (Table 1) link the molecules, generating edge-fused R33(17) (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 a related structure, see: Odabaşoğlu & Büyükgüngör (2006). For ring motif details, see: Bernstein et al. (1995); Etter (1990). For ring conformation puckering parameters, see: Cremer & Pople (1975).

Experimental top

The title compound was prepared according to the method described by Odabaşoğlu & Büyükgüngör (2006), using phthalaldehydic acid and 1-methylpiperazine as starting materials (yield; 85%). 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 atoms were positioned geometrically, with C—H = 0.93, 0.98, 0.97 and 0.96 Å for aromatic, methine, methylene and methyl H, respectively, and constrained to ride on their parent atoms with Uiso(H) = xUeq(C), where x = 1.5 for methyl H and x = 1.2 for all other H atoms.

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 R33(17) ring motifs. Hydrogen bonds are shown as dashed lines [symmetry codes: (i) x, y + 1, z; (ii) 1 - x, 2 - y, 1/2 - z]. H atoms not involved in hydrogen bondings have been omitted for clarity.
3-(4-methylpiperazin-1-yl)isobenzofuran-1(3H)-one top
Crystal data top
C13H16N2O2F000 = 496
Mr = 232.28Dx = 1.265 Mg m−3
Monoclinic, P21/cMo Kα radiation
λ = 0.71073 Å
Hall symbol: -P 2ybcCell parameters from 14223 reflections
a = 13.1442 (7) Åθ = 1.3–27.2º
b = 6.0567 (4) ŵ = 0.09 mm−1
c = 15.7845 (10) ÅT = 296 K
β = 104.022 (5)ºPrism, colourless
V = 1219.17 (13) Å30.56 × 0.49 × 0.37 mm
Z = 4
Data collection top
Stoe IPDSII
diffractometer		2394 independent reflections
Monochromator: plane graphite1890 reflections with I > 2σ(I)
Detector resolution: 6.67 pixels mm-1Rint = 0.035
T = 296 Kθmax = 26.0º
w–scan rotation methodθmin = 1.6º
Absorption correction: integration
(X-RED32; Stoe & Cie, 2002)		h = −16→16
Tmin = 0.952, Tmax = 0.969k = −7→7
14223 measured reflectionsl = −19→19
Refinement top
Refinement on F2Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: fullH-atom parameters constrained
R[F2 > 2σ(F2)] = 0.036  w = 1/[σ2(Fo2) + (0.0465P)2 + 0.1087P]
where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.091(Δ/σ)max < 0.001
S = 1.04Δρmax = 0.14 e Å−3
2394 reflectionsΔρmin = −0.11 e Å−3
155 parametersExtinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.052 (3)
Secondary atom site location: difference Fourier map
Crystal data top
C13H16N2O2V = 1219.17 (13) Å3
Mr = 232.28Z = 4
Monoclinic, P21/cMo Kα
a = 13.1442 (7) ŵ = 0.09 mm−1
b = 6.0567 (4) ÅT = 296 K
c = 15.7845 (10) Å0.56 × 0.49 × 0.37 mm
β = 104.022 (5)º
Data collection top
Stoe IPDSII
diffractometer		2394 independent reflections
Absorption correction: integration
(X-RED32; Stoe & Cie, 2002)		1890 reflections with I > 2σ(I)
Tmin = 0.952, Tmax = 0.969Rint = 0.035
14223 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.036155 parameters
wR(F2) = 0.091H-atom parameters constrained
S = 1.04Δρmax = 0.14 e Å−3
2394 reflectionsΔρmin = −0.11 e Å−3
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
O10.90768 (9)0.78386 (19)0.39052 (8)0.0726 (3)
O20.83029 (7)0.45298 (17)0.38597 (6)0.0573 (3)
N10.69300 (8)0.23856 (17)0.42651 (7)0.0465 (3)
N20.47776 (8)0.18458 (18)0.34023 (6)0.0468 (3)
C10.87740 (10)0.6335 (2)0.42833 (9)0.0536 (3)
C20.88098 (9)0.6114 (2)0.52149 (9)0.0500 (3)
C30.91995 (11)0.7553 (3)0.59001 (11)0.0616 (4)
H30.95120.88810.58100.074*
C40.91066 (11)0.6944 (3)0.67175 (11)0.0678 (4)
H40.93550.78800.71890.081*
C50.86475 (11)0.4955 (3)0.68471 (10)0.0656 (4)
H50.85970.45740.74060.079*
C60.82633 (10)0.3527 (3)0.61639 (9)0.0582 (4)
H60.79540.21940.62540.070*
C70.83528 (9)0.4141 (2)0.53414 (9)0.0479 (3)
C80.80023 (10)0.2952 (2)0.44870 (9)0.0502 (3)
H80.84190.16010.45090.060*
C90.66011 (11)0.0825 (2)0.35430 (9)0.0520 (3)
H9A0.7084−0.04120.36210.062*
H9B0.66080.15450.29950.062*
C100.55130 (11)0.0013 (2)0.35199 (9)0.0515 (3)
H10A0.5293−0.10290.30440.062*
H10B0.5515−0.07460.40610.062*
C110.51096 (10)0.3423 (2)0.41085 (9)0.0485 (3)
H11A0.50860.27290.46570.058*
H11B0.46290.46640.40170.058*
C120.62040 (10)0.4247 (2)0.41613 (9)0.0468 (3)
H12A0.62190.50540.36340.056*
H12B0.64170.52440.46530.056*
C130.37178 (12)0.1092 (3)0.33673 (11)0.0711 (5)
H13A0.32520.23360.32890.107*
H13B0.37060.03510.39030.107*
H13C0.34960.00890.28870.107*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0645 (7)0.0696 (7)0.0885 (8)0.0008 (5)0.0281 (6)0.0230 (6)
O20.0522 (5)0.0658 (6)0.0575 (6)0.0024 (5)0.0200 (4)0.0016 (5)
N10.0447 (6)0.0395 (6)0.0549 (6)0.0040 (5)0.0116 (5)−0.0060 (5)
N20.0493 (6)0.0476 (6)0.0426 (6)−0.0004 (5)0.0095 (4)−0.0034 (5)
C10.0395 (7)0.0542 (8)0.0687 (9)0.0076 (6)0.0164 (6)0.0087 (7)
C20.0346 (6)0.0504 (8)0.0633 (8)0.0055 (6)0.0086 (6)0.0033 (6)
C30.0409 (7)0.0587 (9)0.0816 (10)−0.0033 (6)0.0082 (7)−0.0051 (8)
C40.0453 (8)0.0845 (12)0.0679 (10)−0.0015 (8)0.0024 (7)−0.0171 (9)
C50.0471 (8)0.0933 (12)0.0535 (8)0.0038 (8)0.0066 (6)0.0013 (8)
C60.0472 (8)0.0642 (9)0.0619 (8)−0.0007 (7)0.0106 (6)0.0092 (7)
C70.0372 (6)0.0490 (8)0.0558 (8)0.0042 (6)0.0080 (5)0.0032 (6)
C80.0479 (7)0.0448 (7)0.0588 (8)0.0064 (6)0.0148 (6)0.0027 (6)
C90.0587 (8)0.0429 (7)0.0544 (8)0.0107 (6)0.0140 (6)−0.0077 (6)
C100.0651 (8)0.0407 (7)0.0463 (7)−0.0012 (6)0.0087 (6)−0.0069 (6)
C110.0495 (7)0.0466 (7)0.0514 (7)0.0025 (6)0.0165 (6)−0.0073 (6)
C120.0477 (7)0.0372 (7)0.0573 (8)0.0032 (6)0.0159 (6)−0.0065 (6)
C130.0568 (9)0.0815 (11)0.0733 (10)−0.0138 (8)0.0123 (7)−0.0175 (9)
Geometric parameters (Å, °) top
C1—O11.2078 (17)C9—C101.504 (2)
C1—O21.3512 (17)C9—H9A0.9700
C1—C21.466 (2)C9—H9B0.9700
C2—C71.3740 (19)C10—N21.4537 (17)
C2—C31.387 (2)C10—H10A0.9700
C3—C41.375 (2)C10—H10B0.9700
C3—H30.9300C11—N21.4526 (16)
C4—C51.384 (2)C11—C121.5056 (18)
C4—H40.9300C11—H11A0.9700
C5—C61.379 (2)C11—H11B0.9700
C5—H50.9300C12—N11.4602 (16)
C6—C71.3826 (19)C12—H12A0.9700
C6—H60.9300C12—H12B0.9700
C7—C81.4995 (19)C13—N21.4543 (18)
C8—N11.4098 (17)C13—H13A0.9600
C8—O21.4966 (16)C13—H13B0.9600
C8—H80.9800C13—H13C0.9600
C9—N11.4629 (16)
C1—O2—C8110.62 (10)O2—C8—H8108.8
C8—N1—C12115.28 (10)C7—C8—H8108.8
C8—N1—C9116.08 (10)N1—C9—C10109.26 (10)
C12—N1—C9110.46 (10)N1—C9—H9A109.8
C11—N2—C10109.72 (10)C10—C9—H9A109.8
C11—N2—C13110.04 (11)N1—C9—H9B109.8
C10—N2—C13111.48 (12)C10—C9—H9B109.8
O1—C1—O2122.13 (14)H9A—C9—H9B108.3
O1—C1—C2129.07 (15)N2—C10—C9110.63 (11)
O2—C1—C2108.78 (12)N2—C10—H10A109.5
C7—C2—C3121.67 (14)C9—C10—H10A109.5
C7—C2—C1108.45 (12)N2—C10—H10B109.5
C3—C2—C1129.87 (14)C9—C10—H10B109.5
C4—C3—C2117.60 (15)H10A—C10—H10B108.1
C4—C3—H3121.2N2—C11—C12111.45 (10)
C2—C3—H3121.2N2—C11—H11A109.3
C3—C4—C5120.85 (15)C12—C11—H11A109.3
C3—C4—H4119.6N2—C11—H11B109.3
C5—C4—H4119.6C12—C11—H11B109.3
C6—C5—C4121.35 (14)H11A—C11—H11B108.0
C6—C5—H5119.3N1—C12—C11109.89 (10)
C4—C5—H5119.3N1—C12—H12A109.7
C5—C6—C7117.86 (14)C11—C12—H12A109.7
C5—C6—H6121.1N1—C12—H12B109.7
C7—C6—H6121.1C11—C12—H12B109.7
C2—C7—C6120.67 (13)H12A—C12—H12B108.2
C2—C7—C8109.69 (12)N2—C13—H13A109.5
C6—C7—C8129.64 (13)N2—C13—H13B109.5
N1—C8—O2113.53 (10)H13A—C13—H13B109.5
N1—C8—C7114.27 (11)N2—C13—H13C109.5
O2—C8—C7102.45 (10)H13A—C13—H13C109.5
N1—C8—H8108.8H13B—C13—H13C109.5
O1—C1—O2—C8−179.48 (12)C2—C7—C8—O2−1.01 (13)
C2—C1—O2—C8−0.77 (13)C6—C7—C8—O2178.33 (12)
O1—C1—C2—C7178.69 (14)N1—C8—O2—C1124.81 (11)
O2—C1—C2—C70.10 (14)C7—C8—O2—C11.08 (13)
O1—C1—C2—C3−0.2 (2)O2—C8—N1—C12−55.67 (14)
O2—C1—C2—C3−178.84 (13)C7—C8—N1—C1261.34 (15)
C7—C2—C3—C4−0.5 (2)O2—C8—N1—C975.74 (14)
C1—C2—C3—C4178.35 (13)C7—C8—N1—C9−167.25 (11)
C2—C3—C4—C50.5 (2)C10—C9—N1—C8167.50 (11)
C3—C4—C5—C6−0.4 (2)C10—C9—N1—C12−58.87 (14)
C4—C5—C6—C70.1 (2)N1—C9—C10—N259.53 (14)
C3—C2—C7—C60.25 (19)C9—C10—N2—C11−58.56 (13)
C1—C2—C7—C6−178.80 (11)C9—C10—N2—C13179.29 (11)
C3—C2—C7—C8179.66 (12)C12—C11—N2—C1057.22 (14)
C1—C2—C7—C80.61 (14)C12—C11—N2—C13−179.77 (12)
C5—C6—C7—C2−0.08 (19)N2—C11—C12—N1−56.78 (14)
C5—C6—C7—C8−179.35 (13)C11—C12—N1—C8−168.52 (10)
C2—C7—C8—N1−124.24 (12)C11—C12—N1—C957.45 (14)
C6—C7—C8—N155.10 (18)
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
C8—H8···O1i0.982.693.6135 (18)157
C10—H10A···N2ii0.972.603.5315 (17)160
Symmetry codes: (i) x, y−1, z; (ii) −x+1, y−1/2, −z+1/2.
Table 1
Hydrogen-bond geometry (Å, °) top
D—H···AD—HH···AD···AD—H···A
C8—H8···O1i0.982.693.6135 (18)157
C10—H10A···N2ii0.972.603.5315 (17)160
Symmetry codes: (i) x, y−1, z; (ii) −x+1, y−1/2, −z+1/2.
Acknowledgements top

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

references
References top

Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573.

Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358.

Etter, M. C. (1990). Acc. Chem. Res. 23, 120–126.

Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.

Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837–838.

Odabaşoğlu, M. & Büyükgüngör, O. (2006). Acta Cryst. E62, o1879–o1881.

Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.

Stoe & Cie (2002). X-AREA and X-RED32. Stoe & Cie, Darmstadt, Germany.