organic compounds
2,2′-Dihydroxy-N,N′-(ethane-1,2-diyl)dibenzamide
aEscola de Quimica e Alimentos, Universidade Federal do Rio Grande, Av. Italia, km 08, Campus Carreiros, 96203-900 Rio Grande-RS, Brazil, and bDepartamento de Quimica, Universidade Federal de Santa Maria, Av. Roraima Campus, 97105-900 Santa Maria-RS, Brazil
*Correspondence e-mail: sabrinanobre@furg.br
The 16H16N2O4, contains one half-molecule, the whole molecule being generated by an inversion center located at the mid-point of the C—C bond of the central ethane group. An intramolecular O—H⋯O hydrogen bond forms an S(6) ring motif. In the crystal, molecules are connected via N—H⋯O hydrogen bonds, generating infinite chains along [1-10].
of the title compound, CRelated literature
For the synthesis of bisamides, see: Apurba et al. (2002); Fry et al. (2010). For similar bisamide crystal structures, see: Booysen et al. (2009). For applications of bisamides as catalysts, see: Maurya et al. (2003); Liu et al. (2011).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536812051963/lr2096sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812051963/lr2096Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812051963/lr2096Isup3.cml
Ethylenediamine (0.1 mol, 6.6 ml) was added to a solution containing methyl salicylate (0.2 mol, 25.7 ml). The mixture was refluxed for 7 h. The reaction product was washed with ethyl acetate (3 times in 30 ml) and dried over CaCl2. After recrystallization from hexane, a yellow solid was obtained (23.1 g, 77%).
H atoms attached to aromatic C atoms were positioned with idealized geometry and were refined isotropic with Ueq(H) set to 1.2 times of the Ueq(C) using a riding model with C–H = 0.93 Å. H atoms attached to N atoms and to the ethylene fragment were located in difference Fourier maps. Their positional and isotropic displacement parameters were refined.
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C16H16N2O4 | Z = 1 |
Mr = 300.31 | F(000) = 158 |
Triclinic, P1 | Dx = 1.409 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 4.6311 (3) Å | Cell parameters from 1575 reflections |
b = 5.0435 (3) Å | θ = 2.7–25.8° |
c = 15.2957 (9) Å | µ = 0.10 mm−1 |
α = 89.091 (4)° | T = 296 K |
β = 83.315 (4)° | Block, colourless |
γ = 85.956 (4)° | 0.34 × 0.24 × 0.11 mm |
V = 353.94 (4) Å3 |
Bruker APEXII CCD diffractometer | 1535 independent reflections |
Radiation source: fine-focus sealed tube | 924 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.033 |
ϕ and ω scans | θmax = 27.1°, θmin = 2.7° |
Absorption correction: gaussian (SADABS; Bruker, 2009) | h = −5→5 |
Tmin = 0.966, Tmax = 0.989 | k = −6→6 |
9142 measured reflections | l = −19→19 |
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)] = 0.049 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0644P)2 + 0.0596P] where P = (Fo2 + 2Fc2)/3 |
1535 reflections | (Δ/σ)max < 0.001 |
100 parameters | Δρmax = 0.13 e Å−3 |
0 restraints | Δρmin = −0.16 e Å−3 |
C16H16N2O4 | γ = 85.956 (4)° |
Mr = 300.31 | V = 353.94 (4) Å3 |
Triclinic, P1 | Z = 1 |
a = 4.6311 (3) Å | Mo Kα radiation |
b = 5.0435 (3) Å | µ = 0.10 mm−1 |
c = 15.2957 (9) Å | T = 296 K |
α = 89.091 (4)° | 0.34 × 0.24 × 0.11 mm |
β = 83.315 (4)° |
Bruker APEXII CCD diffractometer | 1535 independent reflections |
Absorption correction: gaussian (SADABS; Bruker, 2009) | 924 reflections with I > 2σ(I) |
Tmin = 0.966, Tmax = 0.989 | Rint = 0.033 |
9142 measured reflections |
R[F2 > 2σ(F2)] = 0.049 | 0 restraints |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.13 e Å−3 |
1535 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 | ||
O1 | 0.4041 (3) | 1.1108 (3) | 0.79344 (10) | 0.0718 (5) | |
H1 | 0.4677 | 1.0900 | 0.8411 | 0.108* | |
O2 | 0.7318 (3) | 0.9317 (3) | 0.90207 (9) | 0.0629 (5) | |
N | 1.0113 (3) | 0.5534 (3) | 0.87856 (10) | 0.0507 (5) | |
H0 | 1.0709 | 0.4248 | 0.8433 | 0.061* | |
C1 | 0.7459 (4) | 0.7361 (3) | 0.76153 (11) | 0.0426 (5) | |
C2 | 0.5357 (4) | 0.9263 (4) | 0.73646 (12) | 0.0496 (5) | |
C3 | 0.4584 (5) | 0.9234 (5) | 0.65190 (15) | 0.0676 (6) | |
H3 | 0.3184 | 1.0495 | 0.6352 | 0.081* | |
C4 | 0.5845 (5) | 0.7384 (4) | 0.59253 (14) | 0.0649 (6) | |
H4 | 0.5312 | 0.7405 | 0.5357 | 0.078* | |
C5 | 0.7895 (5) | 0.5493 (5) | 0.61620 (14) | 0.0655 (6) | |
H5 | 0.8742 | 0.4220 | 0.5760 | 0.079* | |
C6 | 0.8674 (5) | 0.5507 (4) | 0.69979 (13) | 0.0589 (6) | |
H6 | 1.0068 | 0.4226 | 0.7156 | 0.071* | |
C7 | 0.8293 (4) | 0.7466 (4) | 0.85175 (12) | 0.0448 (5) | |
C8 | 1.1112 (4) | 0.5513 (4) | 0.96491 (12) | 0.0523 (5) | |
H8A | 1.1517 | 0.7304 | 0.9796 | 0.063* | |
H8B | 1.2913 | 0.4402 | 0.9636 | 0.063* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0882 (11) | 0.0606 (9) | 0.0622 (9) | 0.0348 (8) | −0.0120 (8) | −0.0122 (7) |
O2 | 0.0780 (10) | 0.0543 (9) | 0.0545 (9) | 0.0202 (7) | −0.0125 (7) | −0.0214 (7) |
N | 0.0591 (10) | 0.0484 (10) | 0.0439 (9) | 0.0123 (8) | −0.0115 (7) | −0.0116 (7) |
C1 | 0.0458 (10) | 0.0388 (10) | 0.0426 (10) | 0.0022 (8) | −0.0050 (8) | −0.0043 (8) |
C2 | 0.0569 (11) | 0.0402 (10) | 0.0501 (11) | 0.0053 (9) | −0.0049 (9) | −0.0011 (9) |
C3 | 0.0806 (15) | 0.0620 (14) | 0.0601 (13) | 0.0147 (12) | −0.0198 (12) | 0.0036 (11) |
C4 | 0.0828 (16) | 0.0679 (15) | 0.0459 (12) | −0.0029 (12) | −0.0165 (11) | −0.0007 (11) |
C5 | 0.0820 (15) | 0.0642 (14) | 0.0490 (12) | 0.0113 (12) | −0.0094 (11) | −0.0158 (10) |
C6 | 0.0696 (13) | 0.0567 (13) | 0.0488 (12) | 0.0176 (10) | −0.0111 (10) | −0.0120 (10) |
C7 | 0.0458 (10) | 0.0420 (10) | 0.0456 (10) | 0.0040 (8) | −0.0041 (8) | −0.0085 (8) |
C8 | 0.0540 (11) | 0.0563 (12) | 0.0477 (11) | 0.0058 (9) | −0.0154 (8) | −0.0091 (9) |
O1—C2 | 1.349 (2) | C3—C4 | 1.365 (3) |
O1—H1 | 0.8206 | C3—H3 | 0.9300 |
O2—C7 | 1.245 (2) | C4—C5 | 1.372 (3) |
N—C7 | 1.334 (2) | C4—H4 | 0.9300 |
N—C8 | 1.449 (2) | C5—C6 | 1.369 (3) |
N—H0 | 0.8600 | C5—H5 | 0.9300 |
C1—C6 | 1.383 (2) | C6—H6 | 0.9300 |
C1—C2 | 1.400 (3) | C8—C8i | 1.511 (4) |
C1—C7 | 1.478 (2) | C8—H8A | 0.9700 |
C2—C3 | 1.382 (3) | C8—H8B | 0.9700 |
C2—O1—H1 | 109.5 | C6—C5—C4 | 119.07 (19) |
C7—N—C8 | 122.58 (15) | C6—C5—H5 | 120.5 |
C7—N—H0 | 118.6 | C4—C5—H5 | 120.5 |
C8—N—H0 | 118.8 | C5—C6—C1 | 122.21 (18) |
C6—C1—C2 | 117.95 (17) | C5—C6—H6 | 118.9 |
C6—C1—C7 | 123.62 (16) | C1—C6—H6 | 118.9 |
C2—C1—C7 | 118.42 (15) | O2—C7—N | 120.36 (17) |
O1—C2—C3 | 119.21 (17) | O2—C7—C1 | 120.87 (16) |
O1—C2—C1 | 121.37 (17) | N—C7—C1 | 118.78 (15) |
C3—C2—C1 | 119.42 (17) | N—C8—C8i | 112.0 (2) |
C4—C3—C2 | 120.98 (19) | N—C8—H8A | 109.2 |
C4—C3—H3 | 119.5 | C8i—C8—H8A | 109.2 |
C2—C3—H3 | 119.5 | N—C8—H8B | 109.2 |
C3—C4—C5 | 120.4 (2) | C8i—C8—H8B | 109.2 |
C3—C4—H4 | 119.8 | H8A—C8—H8B | 107.9 |
C5—C4—H4 | 119.8 | ||
C6—C1—C2—O1 | 178.94 (18) | C2—C1—C6—C5 | 0.3 (3) |
C7—C1—C2—O1 | −2.0 (3) | C7—C1—C6—C5 | −178.7 (2) |
C6—C1—C2—C3 | −0.3 (3) | C8—N—C7—O2 | −1.8 (3) |
C7—C1—C2—C3 | 178.77 (19) | C8—N—C7—C1 | 178.24 (17) |
O1—C2—C3—C4 | −179.4 (2) | C6—C1—C7—O2 | 173.61 (19) |
C1—C2—C3—C4 | −0.2 (4) | C2—C1—C7—O2 | −5.4 (3) |
C2—C3—C4—C5 | 0.6 (4) | C6—C1—C7—N | −6.5 (3) |
C3—C4—C5—C6 | −0.6 (4) | C2—C1—C7—N | 174.55 (17) |
C4—C5—C6—C1 | 0.2 (4) | C7—N—C8—C8i | 80.7 (3) |
Symmetry code: (i) −x+2, −y+1, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2 | 0.82 | 1.76 | 2.495 (2) | 148 |
N—H0···O1ii | 0.86 | 2.21 | 2.993 (2) | 151 |
Symmetry code: (ii) x+1, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C16H16N2O4 |
Mr | 300.31 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 296 |
a, b, c (Å) | 4.6311 (3), 5.0435 (3), 15.2957 (9) |
α, β, γ (°) | 89.091 (4), 83.315 (4), 85.956 (4) |
V (Å3) | 353.94 (4) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.34 × 0.24 × 0.11 |
Data collection | |
Diffractometer | Bruker APEXII CCD diffractometer |
Absorption correction | Gaussian (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.966, 0.989 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9142, 1535, 924 |
Rint | 0.033 |
(sin θ/λ)max (Å−1) | 0.642 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.143, 1.01 |
No. of reflections | 1535 |
No. of parameters | 100 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.13, −0.16 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2 | 0.82 | 1.76 | 2.495 (2) | 148 |
N—H0···O1i | 0.86 | 2.21 | 2.993 (2) | 151 |
Symmetry code: (i) x+1, y−1, z. |
Acknowledgements
The authors gratefully acknowledge Professor Manfredo Hörner, Department of Chemistry, Universidade Federal de Santa Maria, Brazil, for his support and help with the X-ray measurements. They also thank PRONEX FAPERGS/CNPq 10/0009–2 and PRONEM FAPERGS/CNPq 11/2026–4 for funding this study.
References
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Nitrogenated compound amines, imines and amides are part of a broad class of molecules having a pharmacological and technological profile (Fry et al. 2010). Bisamides can be synthesized from a reaction between a diamine and an acylhalide under reflux (Apurba et al. 2002 ; Fry et al. 2010). Some synthesized bisamides have had their crystal structure determined (Booysen et al. 2009). However, others have been synthesized and applied to several reactions, such as the hydroformylation of phenol (Maurya et al. 2003) and due to the simplicity of the synthesis of these compounds, they have being applied to coupling reactions, such as the Suzuki reaction (Liu et al. 2011). The asymmetric unit is formed by one half of the molecule and the whole molecule is generated through a crystallographic center of symmetry placed in the mid-point of the C-C bond of the ethane bridging moiety (Fig. 1). Intramolecular and intermolecular classical hydrogen bond interactions are observed in the solid state. Each molecule participates in intermolecular hydrogen bond interactions with two other neighboring molecules through Nii–H0ii···O1 with a distance of 2.210 Å (symmetry code: (ii) -1 + x, 1 + y, z). The intramolecular hydrogen bonding systems forms six membered rings, showing a shorter distance of 1.763 Å (O2···H1–O1). These hydrogen bonding may contribute to the stabilization of the crystal structure (Fig. 2).