organic compounds
(1R*,2S*)-2-Nitro-1-(4-nitrophenyl)propanol
aDepartment of Chemistry, School of Pharmacy, Fourth Military Medical University, Shaanxi Province, Xi'an 710032, People's Republic of China
*Correspondence e-mail: weihechem@fmmu.edu.cn
The title compound, C9H10N2O5, presents a of two enantiomeric In the crystal, molecules assemble into zigzag chains parallel to the b axis [C(6) motif] due to the formation of elongated O—H⋯O(N) hydrogen bonds. Of interest is the fact that only the aliphatic nitro group is involved in hydrogen bonding and it adopts a gauche conformation with respect to the OH group.
Related literature
For the preparation and synthetic utilities of 2-nitroethanols, see: Palomo et al. (2005); Palomo (2007). For the structure of the closely related 1-(anthracen-9-yl)-2-nitroethanol, see: Niazimbetova et al. (1998). For spectroscopic data and chemical properties of the title compound, see: Blay et al. (2008). For hydrogen-bond graph-set notation, see: Etter et al. (1990).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: SHELXTL and OLEX2.
Supporting information
10.1107/S1600536812007775/hg5165sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812007775/hg5165Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812007775/hg5165Isup3.cdx
Supporting information file. DOI: 10.1107/S1600536812007775/hg5165Isup4.cml
Quinine [(R)-(6-methoxyquinolin-4-yl)((2S,4S,8R)-8-vinylquinuclidin-2-yl)methanol, 32.4 mg, 0.1 mmol], Zn(OTf)2 [zinc bis(trifluoromethanesulfonate), 36.3 mg, 0.1 mmol], and p-nitrobenzaldehyde (151.1 mg, 1 mmol) were dissolved in THF (5 ml). To this solution, excess of nitroethane (10 mmol) was added. After keeping the mixture for 1 h at 253 K, N-ethyl-N,N-diisopropylamine (17.3 µl, 0.1 mmol) was entered and the slurry was allowed to stay for additional 12 h at the same temperature. The resultant solution was concentrated under reduced pressure and then subjected to silica gel flash
(hexane/ethyl acetate = 10/1), what gave I as a Purity of the product was proved additionally by the HPLC method. Single crystal of I suitable for the X-ray was grown from a CH2Cl2–methanol medium (volume ratio 2: 1). NMR spectral data are in consistence with reported earlier (Blay et al., 2008).Non-H atoms were refined anisotropically. All H atoms except of the OH group one were treated as riding atoms with distances C—H = 0.96 (CH3), 0.98 (CH), 0.93 Å (CArH), and Uiso(H) = 1.5Ueq(C), 1.2Ueq(C), and 1.2Ueq(C), respectively. The hydroxy-group H-atom was found from the difference Fourier syntheses and refined isotropically.
Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and OLEX2 (Dolomanov et al., 2009).C9H10N2O5 | F(000) = 472 |
Mr = 226.19 | Dx = 1.436 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1711 reflections |
a = 7.4013 (15) Å | θ = 2.5–24.3° |
b = 10.504 (2) Å | µ = 0.12 mm−1 |
c = 13.681 (3) Å | T = 296 K |
β = 100.465 (4)° | Prism, colourless |
V = 1046.0 (4) Å3 | 0.40 × 0.28 × 0.14 mm |
Z = 4 |
Bruker APEXII diffractometer | 1868 independent reflections |
Radiation source: fine-focus sealed tube | 1502 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.017 |
Detector resolution: 8.333 pixels mm-1 | θmax = 25.1°, θmin = 2.5° |
ϕ and ω scans | h = −8→5 |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | k = −12→12 |
Tmin = 0.954, Tmax = 0.984 | l = −14→16 |
5155 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)] = 0.045 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.119 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0497P)2 + 0.3436P] where P = (Fo2 + 2Fc2)/3 |
1868 reflections | (Δ/σ)max < 0.001 |
150 parameters | Δρmax = 0.24 e Å−3 |
0 restraints | Δρmin = −0.16 e Å−3 |
C9H10N2O5 | V = 1046.0 (4) Å3 |
Mr = 226.19 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.4013 (15) Å | µ = 0.12 mm−1 |
b = 10.504 (2) Å | T = 296 K |
c = 13.681 (3) Å | 0.40 × 0.28 × 0.14 mm |
β = 100.465 (4)° |
Bruker APEXII diffractometer | 1868 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1502 reflections with I > 2σ(I) |
Tmin = 0.954, Tmax = 0.984 | Rint = 0.017 |
5155 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 0 restraints |
wR(F2) = 0.119 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.24 e Å−3 |
1868 reflections | Δρmin = −0.16 e Å−3 |
150 parameters |
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 > 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 | 0.1671 (2) | −0.04487 (15) | 0.18274 (12) | 0.0528 (4) | |
N2 | 0.3598 (3) | 0.67086 (16) | 0.05631 (16) | 0.0611 (5) | |
O1 | 0.2260 (2) | −0.09283 (15) | 0.26305 (12) | 0.0718 (5) | |
O2 | 0.0497 (3) | −0.09303 (15) | 0.12111 (11) | 0.0800 (6) | |
O3 | 0.0003 (3) | 0.17439 (15) | 0.21466 (14) | 0.0757 (6) | |
O4 | 0.4510 (3) | 0.72894 (16) | 0.12539 (14) | 0.0886 (6) | |
O5 | 0.3235 (3) | 0.71279 (16) | −0.02787 (15) | 0.0872 (6) | |
C1 | 0.3609 (4) | 0.0580 (2) | 0.07942 (18) | 0.0722 (7) | |
H1A | 0.4478 | −0.0088 | 0.1005 | 0.108* | |
H1B | 0.4254 | 0.1345 | 0.0684 | 0.108* | |
H1C | 0.2816 | 0.0334 | 0.0188 | 0.108* | |
C2 | 0.2477 (3) | 0.08152 (17) | 0.15862 (16) | 0.0522 (5) | |
H2 | 0.3297 | 0.1121 | 0.2184 | 0.063* | |
C3 | 0.0905 (3) | 0.17561 (18) | 0.13254 (15) | 0.0512 (5) | |
H3A | 0.0060 | 0.1456 | 0.0734 | 0.061* | |
C4 | 0.1629 (3) | 0.30631 (17) | 0.11196 (14) | 0.0464 (5) | |
C5 | 0.2240 (3) | 0.3894 (2) | 0.18973 (15) | 0.0551 (5) | |
H5 | 0.2211 | 0.3644 | 0.2546 | 0.066* | |
C6 | 0.2890 (3) | 0.50863 (19) | 0.17205 (15) | 0.0555 (5) | |
H6 | 0.3295 | 0.5643 | 0.2243 | 0.067* | |
C7 | 0.2926 (3) | 0.54335 (17) | 0.07561 (15) | 0.0489 (5) | |
C8 | 0.2320 (3) | 0.46360 (18) | −0.00374 (15) | 0.0522 (5) | |
H8 | 0.2347 | 0.4892 | −0.0685 | 0.063* | |
C9 | 0.1676 (3) | 0.34498 (18) | 0.01569 (15) | 0.0520 (5) | |
H9 | 0.1266 | 0.2898 | −0.0368 | 0.062* | |
H3 | −0.076 (4) | 0.230 (3) | 0.209 (2) | 0.103 (11)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0716 (11) | 0.0402 (9) | 0.0517 (10) | −0.0058 (8) | 0.0245 (9) | −0.0030 (8) |
N2 | 0.0612 (11) | 0.0396 (10) | 0.0843 (14) | −0.0007 (8) | 0.0185 (10) | 0.0046 (10) |
O1 | 0.0958 (12) | 0.0593 (10) | 0.0614 (10) | −0.0052 (8) | 0.0171 (8) | 0.0150 (8) |
O2 | 0.1145 (14) | 0.0619 (10) | 0.0603 (10) | −0.0379 (10) | 0.0069 (9) | −0.0026 (8) |
O3 | 0.0893 (12) | 0.0504 (9) | 0.1043 (14) | 0.0075 (9) | 0.0623 (11) | 0.0127 (9) |
O4 | 0.1091 (14) | 0.0488 (10) | 0.1031 (14) | −0.0220 (9) | 0.0061 (11) | −0.0073 (9) |
O5 | 0.1046 (14) | 0.0596 (10) | 0.0953 (13) | −0.0183 (9) | 0.0122 (11) | 0.0244 (9) |
C1 | 0.0846 (16) | 0.0519 (13) | 0.0924 (17) | 0.0049 (11) | 0.0487 (14) | 0.0075 (12) |
C2 | 0.0625 (12) | 0.0343 (10) | 0.0650 (13) | −0.0074 (9) | 0.0251 (10) | −0.0013 (9) |
C3 | 0.0542 (11) | 0.0440 (11) | 0.0587 (12) | −0.0049 (9) | 0.0191 (9) | 0.0039 (9) |
C4 | 0.0475 (10) | 0.0385 (10) | 0.0560 (11) | 0.0008 (8) | 0.0168 (9) | 0.0023 (8) |
C5 | 0.0657 (13) | 0.0511 (12) | 0.0531 (12) | −0.0037 (10) | 0.0233 (10) | 0.0009 (9) |
C6 | 0.0598 (12) | 0.0486 (11) | 0.0595 (13) | −0.0036 (9) | 0.0151 (10) | −0.0098 (10) |
C7 | 0.0461 (10) | 0.0336 (10) | 0.0695 (13) | 0.0013 (8) | 0.0176 (9) | 0.0020 (9) |
C8 | 0.0607 (12) | 0.0430 (11) | 0.0548 (12) | 0.0012 (9) | 0.0155 (9) | 0.0067 (9) |
C9 | 0.0614 (12) | 0.0405 (11) | 0.0548 (12) | −0.0028 (9) | 0.0126 (9) | −0.0021 (9) |
N1—O2 | 1.206 (2) | C2—H2 | 0.9800 |
N1—O1 | 1.215 (2) | C3—C4 | 1.519 (3) |
N1—C2 | 1.516 (2) | C3—H3A | 0.9800 |
N2—O5 | 1.217 (2) | C4—C9 | 1.385 (3) |
N2—O4 | 1.220 (2) | C4—C5 | 1.387 (3) |
N2—C7 | 1.469 (2) | C5—C6 | 1.378 (3) |
O3—C3 | 1.407 (2) | C5—H5 | 0.9300 |
O3—H3 | 0.80 (3) | C6—C7 | 1.374 (3) |
C1—C2 | 1.505 (3) | C6—H6 | 0.9300 |
C1—H1A | 0.9600 | C7—C8 | 1.380 (3) |
C1—H1B | 0.9600 | C8—C9 | 1.377 (3) |
C1—H1C | 0.9600 | C8—H8 | 0.9300 |
C2—C3 | 1.519 (3) | C9—H9 | 0.9300 |
O2—N1—O1 | 123.54 (17) | O3—C3—H3A | 109.4 |
O2—N1—C2 | 118.50 (17) | C4—C3—H3A | 109.4 |
O1—N1—C2 | 117.96 (17) | C2—C3—H3A | 109.4 |
O5—N2—O4 | 123.24 (19) | C9—C4—C5 | 118.93 (17) |
O5—N2—C7 | 118.44 (19) | C9—C4—C3 | 120.81 (17) |
O4—N2—C7 | 118.31 (19) | C5—C4—C3 | 120.26 (18) |
C3—O3—H3 | 110 (2) | C6—C5—C4 | 120.86 (19) |
C2—C1—H1A | 109.5 | C6—C5—H5 | 119.6 |
C2—C1—H1B | 109.5 | C4—C5—H5 | 119.6 |
H1A—C1—H1B | 109.5 | C7—C6—C5 | 118.55 (19) |
C2—C1—H1C | 109.5 | C7—C6—H6 | 120.7 |
H1A—C1—H1C | 109.5 | C5—C6—H6 | 120.7 |
H1B—C1—H1C | 109.5 | C6—C7—C8 | 122.29 (18) |
C1—C2—N1 | 107.80 (16) | C6—C7—N2 | 118.74 (18) |
C1—C2—C3 | 116.12 (18) | C8—C7—N2 | 118.96 (18) |
N1—C2—C3 | 107.79 (16) | C9—C8—C7 | 118.15 (19) |
C1—C2—H2 | 108.3 | C9—C8—H8 | 120.9 |
N1—C2—H2 | 108.3 | C7—C8—H8 | 120.9 |
C3—C2—H2 | 108.3 | C8—C9—C4 | 121.22 (19) |
O3—C3—C4 | 113.00 (16) | C8—C9—H9 | 119.4 |
O3—C3—C2 | 105.12 (16) | C4—C9—H9 | 119.4 |
C4—C3—C2 | 110.52 (16) | ||
O2—N1—C2—C1 | −69.5 (2) | C3—C4—C5—C6 | −179.58 (18) |
O1—N1—C2—C1 | 109.8 (2) | C4—C5—C6—C7 | −0.2 (3) |
O2—N1—C2—C3 | 56.6 (2) | C5—C6—C7—C8 | 0.6 (3) |
O1—N1—C2—C3 | −124.2 (2) | C5—C6—C7—N2 | 179.34 (18) |
C1—C2—C3—O3 | 176.23 (17) | O5—N2—C7—C6 | −162.9 (2) |
N1—C2—C3—O3 | 55.2 (2) | O4—N2—C7—C6 | 17.9 (3) |
C1—C2—C3—C4 | −61.5 (2) | O5—N2—C7—C8 | 15.9 (3) |
N1—C2—C3—C4 | 177.48 (16) | O4—N2—C7—C8 | −163.3 (2) |
O3—C3—C4—C9 | −146.5 (2) | C6—C7—C8—C9 | −0.6 (3) |
C2—C3—C4—C9 | 96.0 (2) | N2—C7—C8—C9 | −179.31 (17) |
O3—C3—C4—C5 | 32.9 (3) | C7—C8—C9—C4 | 0.2 (3) |
C2—C3—C4—C5 | −84.6 (2) | C5—C4—C9—C8 | 0.2 (3) |
C9—C4—C5—C6 | −0.1 (3) | C3—C4—C9—C8 | 179.61 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3···O1i | 0.80 (3) | 2.24 (3) | 3.010 (2) | 162 (3) |
Symmetry code: (i) −x, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C9H10N2O5 |
Mr | 226.19 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 7.4013 (15), 10.504 (2), 13.681 (3) |
β (°) | 100.465 (4) |
V (Å3) | 1046.0 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.40 × 0.28 × 0.14 |
Data collection | |
Diffractometer | Bruker APEXII diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.954, 0.984 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5155, 1868, 1502 |
Rint | 0.017 |
(sin θ/λ)max (Å−1) | 0.597 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.119, 1.05 |
No. of reflections | 1868 |
No. of parameters | 150 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.24, −0.16 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and OLEX2 (Dolomanov et al., 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3···O1i | 0.80 (3) | 2.24 (3) | 3.010 (2) | 162 (3) |
Symmetry code: (i) −x, y+1/2, −z+1/2. |
Acknowledgements
Financial support from the Natural Science Foundation of China (project No. 21072228) is gratefully acknowledged. We are also grateful to Dr Maxim V. Borzov (a Foreign Expert at the North-West University, Xi'an, China) for his great help in revising this contribution.
References
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The title compound, C9H10N2O5, I, belongs to the family of β-nitroalcohols which can serve as convenient synthetic precursors for a variety of 1,2-amino alcohols, amino sugars, nitroketones, nitroalkenes, ketones, and other practically important compounds (Palomo et al., 2005; Palomo, 2007).
β-Nitroalcohol I was prepared by a modified procedure described by Blay et al., 2008 (see Experimental). Only one pair of diastereomers is observed among the reaction products, what could be a result of the application of an enantiomerically pure base, natural quinine (see Experimental). In the unsymmetrical unit of I, the N—C(aliphatic) bond is by 0.05 Å longer than the N—C(aromatic) one due to the evident p–π conjugation. The aromatic NO2 group is slightly twisted in respect to the Ph-ring plane [the C6/C7/N2/O4 dihedral angle equals to 17.9 (3)°]. In crystal lattice, the molecules of I assemble in zigzag chains parallel to the b-axis [a C(6) motif (Etter et al., 1990)] due to formation of somewhat elongated [2.24 (3) Å] O—H···O(N) hydrogen bonds. Of interest, only the aliphatic nitro-group is involved into the H-binding and adopts a gauche-conformation respectively to the OH-group, with the N1/C2/C3/O3 dihedral angle being rather close to 60° [55.2 (2)°]. The same H-binding motif was observed earlier for the case of closely related 1-(antracen-9-yl)-2-nitroethanol (Niazimbetova et al., 1998).