organic compounds
Methyl isonicotinate 1-oxide
aCollege of Chemistry and Chemical, Engineering, Southeast University, Nanjing 210096, People's Republic of China
*Correspondence e-mail: fudavid88@yahoo.com.cn
In the title compound, C7H7NO3, the benzene ring and the methyl ester group are nearly coplanar, forming a dihedral of 3.09 (9)°. The is stabilized by intermolecular C—H⋯O hydrogen bonds, forming layers parallel to (101).
Related literature
For the application of carboxylate derivatives in microelectronics and as memory storage devices, see: Fu et al. (2007, 2008); Fu & Xiong (2008).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536810004629/rz2415sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810004629/rz2415Isup2.hkl
Methyl isonicotinate 1-oxide (3 mmol, 0.46 g) was dissolved in methanol. The solvent was slowly evaporated in air affording colourless block-shaped crystals of the title compound suitable for X-ray analysis. Permittivity measurements show that there is no
within the temperature range (from 100 K to 400 K), and the permittivity is 6.5 at 1 MHz at room temperature.All H atoms attached to C atoms were positioned geometrically and treated as riding, with C—H = 0.93 Å (aromatic), 0.96 Å (methyl) and Uiso(H) = 1.2Ueq(C) and 1.5Ueq(C) for methyl H atoms. A rotating-group model was used for the methyl.
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. A view of the title compound with the atomic numbering scheme. Displacement ellipsoids were drawn at the 30% probability level. |
C7H7NO3 | F(000) = 320 |
Mr = 153.14 | Dx = 1.420 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1640 reflections |
a = 7.2429 (14) Å | θ = 3.5–27.5° |
b = 10.347 (2) Å | µ = 0.11 mm−1 |
c = 9.898 (2) Å | T = 298 K |
β = 105.09 (3)° | Block, colourless |
V = 716.2 (3) Å3 | 0.30 × 0.25 × 0.20 mm |
Z = 4 |
Rigaku Mercury2 diffractometer | 1640 independent reflections |
Radiation source: fine-focus sealed tube | 972 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.053 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 27.5°, θmin = 3.5° |
CCD profile fitting scans | h = −9→9 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −13→13 |
Tmin = 0.96, Tmax = 1.00 | l = −12→12 |
7070 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)] = 0.060 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.180 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0868P)2 + 0.0635P] where P = (Fo2 + 2Fc2)/3 |
1640 reflections | (Δ/σ)max < 0.001 |
100 parameters | Δρmax = 0.18 e Å−3 |
0 restraints | Δρmin = −0.16 e Å−3 |
C7H7NO3 | V = 716.2 (3) Å3 |
Mr = 153.14 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.2429 (14) Å | µ = 0.11 mm−1 |
b = 10.347 (2) Å | T = 298 K |
c = 9.898 (2) Å | 0.30 × 0.25 × 0.20 mm |
β = 105.09 (3)° |
Rigaku Mercury2 diffractometer | 1640 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 972 reflections with I > 2σ(I) |
Tmin = 0.96, Tmax = 1.00 | Rint = 0.053 |
7070 measured reflections |
R[F2 > 2σ(F2)] = 0.060 | 0 restraints |
wR(F2) = 0.180 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.18 e Å−3 |
1640 reflections | Δρmin = −0.16 e Å−3 |
100 parameters |
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 > σ(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 | ||
N1 | 0.3267 (3) | 0.76927 (18) | 0.0785 (2) | 0.0666 (5) | |
C5 | 0.2388 (3) | 1.02039 (19) | −0.0124 (2) | 0.0542 (5) | |
C6 | 0.1852 (3) | 1.1517 (2) | −0.0654 (2) | 0.0642 (6) | |
C4 | 0.3492 (3) | 0.99507 (19) | 0.1224 (2) | 0.0582 (6) | |
H4A | 0.3944 | 1.0628 | 0.1838 | 0.070* | |
O3 | 0.3658 (3) | 0.65171 (15) | 0.1201 (2) | 0.0955 (6) | |
O1 | 0.2579 (2) | 1.24307 (15) | 0.02709 (18) | 0.0782 (6) | |
O2 | 0.0834 (3) | 1.17357 (17) | −0.18032 (17) | 0.0934 (7) | |
C3 | 0.3912 (3) | 0.8701 (2) | 0.1644 (2) | 0.0650 (6) | |
H3A | 0.4662 | 0.8542 | 0.2545 | 0.078* | |
C2 | 0.2201 (3) | 0.7926 (2) | −0.0537 (2) | 0.0686 (6) | |
H2A | 0.1772 | 0.7237 | −0.1140 | 0.082* | |
C1 | 0.1753 (3) | 0.9152 (2) | −0.0993 (2) | 0.0642 (6) | |
H1A | 0.1010 | 0.9290 | −0.1900 | 0.077* | |
C7 | 0.2062 (4) | 1.3747 (3) | −0.0153 (4) | 0.1006 (9) | |
H7A | 0.2665 | 1.4325 | 0.0590 | 0.151* | |
H7B | 0.0699 | 1.3843 | −0.0356 | 0.151* | |
H7C | 0.2479 | 1.3946 | −0.0974 | 0.151* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0654 (11) | 0.0577 (11) | 0.0714 (12) | 0.0002 (9) | 0.0082 (9) | 0.0014 (9) |
C5 | 0.0466 (11) | 0.0622 (13) | 0.0524 (11) | 0.0009 (9) | 0.0105 (8) | 0.0025 (9) |
C6 | 0.0579 (13) | 0.0722 (15) | 0.0616 (13) | 0.0056 (11) | 0.0138 (10) | 0.0080 (11) |
C4 | 0.0558 (12) | 0.0581 (12) | 0.0557 (12) | −0.0056 (9) | 0.0057 (9) | −0.0022 (9) |
O3 | 0.1118 (15) | 0.0544 (10) | 0.1071 (14) | 0.0042 (9) | 0.0045 (11) | 0.0097 (9) |
O1 | 0.0841 (11) | 0.0557 (10) | 0.0839 (12) | 0.0033 (8) | 0.0022 (9) | 0.0055 (8) |
O2 | 0.1046 (14) | 0.0930 (14) | 0.0680 (11) | 0.0193 (10) | −0.0035 (10) | 0.0157 (9) |
C3 | 0.0644 (13) | 0.0637 (13) | 0.0577 (12) | −0.0054 (10) | −0.0003 (9) | 0.0027 (10) |
C2 | 0.0688 (14) | 0.0720 (15) | 0.0601 (14) | −0.0032 (11) | 0.0081 (11) | −0.0125 (11) |
C1 | 0.0621 (12) | 0.0753 (15) | 0.0498 (11) | 0.0024 (11) | 0.0047 (9) | −0.0021 (10) |
C7 | 0.108 (2) | 0.0577 (15) | 0.126 (2) | 0.0122 (14) | 0.0125 (18) | 0.0178 (15) |
N1—O3 | 1.292 (2) | C4—H4A | 0.9300 |
N1—C3 | 1.350 (3) | O1—C7 | 1.445 (3) |
N1—C2 | 1.357 (3) | C3—H3A | 0.9300 |
C5—C1 | 1.389 (3) | C2—C1 | 1.357 (3) |
C5—C4 | 1.390 (3) | C2—H2A | 0.9300 |
C5—C6 | 1.472 (3) | C1—H1A | 0.9300 |
C6—O2 | 1.205 (3) | C7—H7A | 0.9600 |
C6—O1 | 1.326 (3) | C7—H7B | 0.9600 |
C4—C3 | 1.368 (3) | C7—H7C | 0.9600 |
O3—N1—C3 | 121.0 (2) | N1—C3—H3A | 119.1 |
O3—N1—C2 | 119.8 (2) | C4—C3—H3A | 119.1 |
C3—N1—C2 | 119.1 (2) | N1—C2—C1 | 120.9 (2) |
C1—C5—C4 | 117.49 (19) | N1—C2—H2A | 119.5 |
C1—C5—C6 | 119.2 (2) | C1—C2—H2A | 119.5 |
C4—C5—C6 | 123.3 (2) | C2—C1—C5 | 121.0 (2) |
O2—C6—O1 | 123.6 (2) | C2—C1—H1A | 119.5 |
O2—C6—C5 | 123.3 (2) | C5—C1—H1A | 119.5 |
O1—C6—C5 | 113.05 (19) | O1—C7—H7A | 109.5 |
C3—C4—C5 | 119.77 (19) | O1—C7—H7B | 109.5 |
C3—C4—H4A | 120.1 | H7A—C7—H7B | 109.5 |
C5—C4—H4A | 120.1 | O1—C7—H7C | 109.5 |
C6—O1—C7 | 116.4 (2) | H7A—C7—H7C | 109.5 |
N1—C3—C4 | 121.7 (2) | H7B—C7—H7C | 109.5 |
C1—C5—C6—O2 | 2.1 (3) | O3—N1—C3—C4 | −179.25 (19) |
C4—C5—C6—O2 | −177.0 (2) | C2—N1—C3—C4 | 1.1 (3) |
C1—C5—C6—O1 | −178.87 (17) | C5—C4—C3—N1 | −0.6 (3) |
C4—C5—C6—O1 | 2.0 (3) | O3—N1—C2—C1 | 179.22 (18) |
C1—C5—C4—C3 | 0.1 (3) | C3—N1—C2—C1 | −1.2 (3) |
C6—C5—C4—C3 | 179.26 (17) | N1—C2—C1—C5 | 0.7 (3) |
O2—C6—O1—C7 | 1.1 (3) | C4—C5—C1—C2 | −0.1 (3) |
C5—C6—O1—C7 | −177.87 (18) | C6—C5—C1—C2 | −179.32 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O2i | 0.93 | 2.44 | 3.204 (3) | 139 |
C4—H4A···O3ii | 0.93 | 2.42 | 3.263 (3) | 150 |
Symmetry codes: (i) −x, y−1/2, −z−1/2; (ii) −x+1, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C7H7NO3 |
Mr | 153.14 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 7.2429 (14), 10.347 (2), 9.898 (2) |
β (°) | 105.09 (3) |
V (Å3) | 716.2 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Rigaku Mercury2 diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.96, 1.00 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7070, 1640, 972 |
Rint | 0.053 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.060, 0.180, 1.02 |
No. of reflections | 1640 |
No. of parameters | 100 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.16 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O2i | 0.93 | 2.44 | 3.204 (3) | 139 |
C4—H4A···O3ii | 0.93 | 2.42 | 3.263 (3) | 150 |
Symmetry codes: (i) −x, y−1/2, −z−1/2; (ii) −x+1, y+1/2, −z+1/2. |
Acknowledgements
This work was supported by the Innovative Dissertation Fund of Southeast University.
References
Fu, D.-W., Song, Y.-M., Wang, G.-X., Ye, Q., Xiong, R.-G., Akutagawa, T., Nakamura, T., Chan, P. W. H., Huang, S.-P. & -, D. (2007). J. Am. Chem. Soc. 129, 5346–5347. Web of Science CSD CrossRef PubMed CAS Google Scholar
Fu, D.-W. & Xiong, R.-G. (2008). Dalton Trans. pp. 3946–3948. Web of Science CSD CrossRef Google Scholar
Fu, D.-W., Zhang, W. & Xiong, R.-G. (2008). Cryst. Growth Des. 8, 3461–3464. Web of Science CSD CrossRef CAS Google Scholar
Rigaku (2005). CrystalClear. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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Carboxylate derivatives attracted more attention as pharmaceutical and phase transition dielectric materials for their application in micro-electronics and as memory storage devices (Fu et al., 2007; Fu & Xiong 2008; Fu et al., 2008). With the purpose of obtaining phase transition crystals of carboxylate compounds, the interaction of methyl isonicotinate with hydrogen peroxide has been studied and we have elaborated a series of new materials including these organic molecules. In this paper, we describe the crystal structure of the title compound, Methyl isonicotinate 1-oxide.
In the title compound (Fig. 1), the benzene ring and the methyl ester group are nearly coplanar, the dihedral angle they form being 3.09 (9)°). The N1—O3 bond length of the nitrile group (1.292 (2)Å) is within the normal range. The crystal structure is stabilized by intermolecular C—H···O hydrogen bonds (Table 1) linking the molecules to form layers parallel to the (101) plane.