organic compounds
4-Nitrophenol–2,4,6-triamino-1,3,5-triazine–water (2/1/1)
aDepartment of Physics, Vel Tech Multi Tech Dr. Rangarajan Dr. Sakunthala Enginering College, Avadi, Chennai 600 062, India, bDepartment of Physics, CPCL Polytechnic College, Chennai 600 068, India, cInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wrocław, 2, PO Box 937, Poland, dPG and Research Department of Physics, Pachiayappa's College, Chennai 600 030, India, and eDepartment of Physics, Presidency College, Chennai 600 005, India
*Correspondence e-mail: chakkaravarthi_2005@yahoo.com, anbu24663@yahoo.co.in
In the title adduct, 2C6H5NO3·C3H6N6·H2O, the melamine and the two independent nitrophenol molecules are essentially planar, with maximum deviations of 0.0294 (10), 0.0706 (12) and 0.0742 (12) Å, respectively. In the crystal, N—H⋯N, O—H⋯N, N—H⋯O and O—H⋯O hydrogen bonds link the components into a three-dimensional network. In addition, weak π–π interactions [centroid–centroid distances = 3.728 (3) and 3.749 (3) Å] are observed.
Related literature
For applications of melamine, see: Cook et al. (2005); Rima et al. (2008). For a related structure, see: Cousson et al. (2005).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536812029066/lh5493sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812029066/lh5493Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536812029066/lh5493Isup3.cml
Melamine (1.2612g, 0.01 mmol) was dissolved in 200 ml of hot solution of distilled water. p-Nitrophenol (1.3911g, 0.01 mmol) was dissolved in 100 ml of distilled water separately. To the hot solution of melamine, p-nitrophenol solution was added gently, and stirred well for nearly five hours to get the homogenous solution and the mixture is allowed to evaporate. Within a few days tiny, transparent, yellowish crystals were formed. Recrystallization was carried out by using distilled water to get the pure crystal suitable for X-ray diffraction.
The H atoms for aromatic C-H groups were positioned geometrically with C–H = 0.93 %A and allowed to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C) and all other H atoms were located in a difference Fourier map and allowed to refine freely [N—H = 0.830 (17)-0.894 (19)Å and O—H = 0.84 (2)–0.91 (2)Å].
Melamines are used in the production of melamine foam in polymeric cleaning (Rima et al., 2008) and as a chemical intermediate in plastics manufacturing (Cook et al., 2005). Here, we report the
of a the title compound. The contains one melamine molecule, two independent nitrophenol molecules and one solvent water molecule.The geometric parameters of the melamine molecule (I) (Fig. 1) are comparable with those determined by Cousson et al. (2005). The melamine and nitrophenol molecules are essentially planar, with a maximum deviation of -0.0294 (10) Å for atom N4 in the least square plane (N6/C13/C14/N7/N4/C15/N8/N5), -0.0706 (12) Å for atom O2 in the least square plane (O1/C1-C6/N1/O2/O3) and 0.0742 (12) Å for atom O5 in the least square plane (O4/C10/C11/C12/C7/C8/C9/N2/O5/O6).
In the crystal, O—H···N, N—H···O and O—H···O hydrogen bonds (Table 1 & Fig. 2) and π–π interactions [Cg1···Cg1 (1-x,-y,1-z) distance of 3.749 (3)Å; Cg1···Cg2 (x,-1+y,z) distance of 3.728 (3)Å and Cg2···Cg1 (x,1+y,z) distance of 3.728 (3)Å; Cg1 and Cg2 are the centroids of the rings (C1-C6) and (C7-C12), respectively] connect the components of the structure into a three-dimensional network.
For applications of melamine, see: Cook et al. (2005); Rima et al. (2008). For a related structure, see: Cousson et al. (2005).
Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of (I), with 30% probability displacement ellipsoids for non-H atoms. | |
Fig. 2. The packing of (I), viewed along the a axis. Intermolecular Hydrogen bonds are shown as dashed lines. H atoms not involved in hydrogen bonding have been omitted. |
2C6H5NO3·C3H6N6·H2O | Z = 2 |
Mr = 422.37 | F(000) = 440 |
Triclinic, P1 | Dx = 1.510 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.123 (5) Å | Cell parameters from 21610 reflections |
b = 10.577 (4) Å | θ = 2.1–30.7° |
c = 13.680 (5) Å | µ = 0.12 mm−1 |
α = 68.256 (5)° | T = 295 K |
β = 88.772 (6)° | Block, yellow |
γ = 76.604 (5)° | 0.30 × 0.20 × 0.20 mm |
V = 928.9 (8) Å3 |
Bruker Kappa APEXII diffractometer | 5696 independent reflections |
Radiation source: fine-focus sealed tube | 4164 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
ω and φ scans | θmax = 30.7°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −8→10 |
Tmin = 0.964, Tmax = 0.976 | k = −15→15 |
21610 measured reflections | l = −17→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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.122 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0598P)2 + 0.1276P] where P = (Fo2 + 2Fc2)/3 |
5696 reflections | (Δ/σ)max < 0.001 |
311 parameters | Δρmax = 0.20 e Å−3 |
0 restraints | Δρmin = −0.25 e Å−3 |
2C6H5NO3·C3H6N6·H2O | γ = 76.604 (5)° |
Mr = 422.37 | V = 928.9 (8) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.123 (5) Å | Mo Kα radiation |
b = 10.577 (4) Å | µ = 0.12 mm−1 |
c = 13.680 (5) Å | T = 295 K |
α = 68.256 (5)° | 0.30 × 0.20 × 0.20 mm |
β = 88.772 (6)° |
Bruker Kappa APEXII diffractometer | 5696 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4164 reflections with I > 2σ(I) |
Tmin = 0.964, Tmax = 0.976 | Rint = 0.030 |
21610 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.122 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.20 e Å−3 |
5696 reflections | Δρmin = −0.25 e Å−3 |
311 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. |
x | y | z | Uiso*/Ueq | ||
C1 | −0.33225 (16) | 0.07164 (12) | 0.40065 (10) | 0.0341 (2) | |
C2 | −0.24544 (16) | −0.05332 (12) | 0.48003 (9) | 0.0348 (2) | |
H2 | −0.1702 | −0.0549 | 0.5354 | 0.042* | |
C3 | −0.27246 (18) | −0.17603 (13) | 0.47577 (9) | 0.0370 (3) | |
H3 | −0.2136 | −0.2617 | 0.5281 | 0.044* | |
C4 | −0.38715 (18) | −0.17217 (13) | 0.39367 (10) | 0.0378 (3) | |
C5 | −0.47281 (18) | −0.04548 (15) | 0.31426 (10) | 0.0423 (3) | |
H5 | −0.5486 | −0.0437 | 0.2590 | 0.051* | |
C6 | −0.44573 (17) | 0.07743 (14) | 0.31718 (10) | 0.0406 (3) | |
H6 | −0.5024 | 0.1630 | 0.2642 | 0.049* | |
C7 | −0.16167 (17) | −0.02771 (12) | 0.09893 (9) | 0.0345 (2) | |
C8 | −0.20456 (18) | 0.11701 (13) | 0.05818 (10) | 0.0394 (3) | |
H8 | −0.2801 | 0.1679 | −0.0049 | 0.047* | |
C9 | −0.13380 (19) | 0.18491 (12) | 0.11231 (10) | 0.0387 (3) | |
H9 | −0.1618 | 0.2824 | 0.0860 | 0.046* | |
C10 | −0.02072 (16) | 0.10786 (12) | 0.20608 (9) | 0.0331 (2) | |
C11 | 0.01838 (17) | −0.03791 (12) | 0.24690 (10) | 0.0357 (2) | |
H11 | 0.0921 | −0.0892 | 0.3105 | 0.043* | |
C12 | −0.05206 (17) | −0.10608 (12) | 0.19311 (10) | 0.0361 (3) | |
H12 | −0.0263 | −0.2035 | 0.2197 | 0.043* | |
C13 | 0.26472 (17) | 0.45692 (12) | 0.11080 (9) | 0.0339 (2) | |
C14 | 0.36186 (16) | 0.58004 (11) | 0.19500 (9) | 0.0305 (2) | |
C15 | 0.10688 (16) | 0.48525 (11) | 0.24878 (9) | 0.0322 (2) | |
N1 | −0.30636 (15) | 0.20134 (11) | 0.40532 (10) | 0.0443 (3) | |
N2 | −0.22950 (16) | −0.10017 (13) | 0.04030 (9) | 0.0447 (3) | |
N3 | 0.38541 (14) | 0.53546 (10) | 0.11487 (7) | 0.0338 (2) | |
N4 | 0.22586 (14) | 0.55802 (10) | 0.26462 (7) | 0.0329 (2) | |
N5 | 0.12224 (14) | 0.42855 (10) | 0.17511 (8) | 0.0359 (2) | |
N6 | 0.2906 (2) | 0.40378 (15) | 0.03568 (10) | 0.0538 (3) | |
N7 | 0.48129 (18) | 0.65529 (12) | 0.20504 (10) | 0.0444 (3) | |
N8 | −0.03642 (18) | 0.46571 (13) | 0.31286 (10) | 0.0465 (3) | |
O1 | −0.42179 (18) | −0.28988 (12) | 0.38794 (9) | 0.0562 (3) | |
O2 | −0.21683 (16) | 0.19698 (11) | 0.48256 (9) | 0.0566 (3) | |
O3 | −0.37293 (19) | 0.31089 (11) | 0.33173 (12) | 0.0782 (4) | |
O4 | 0.05318 (15) | 0.16839 (10) | 0.26239 (8) | 0.0464 (2) | |
O5 | −0.31476 (16) | −0.03215 (14) | −0.04647 (9) | 0.0633 (3) | |
O6 | −0.19394 (18) | −0.22987 (12) | 0.08023 (9) | 0.0632 (3) | |
O7 | 0.23235 (17) | 0.53850 (11) | 0.47450 (9) | 0.0526 (3) | |
H1 | −0.357 (3) | −0.370 (3) | 0.4389 (18) | 0.093 (7)* | |
H4 | 0.054 (3) | 0.257 (2) | 0.2186 (15) | 0.071 (5)* | |
H6A | 0.216 (3) | 0.353 (2) | 0.0306 (14) | 0.063 (5)* | |
H6B | 0.378 (3) | 0.4227 (19) | −0.0065 (14) | 0.060 (5)* | |
H7A | 0.243 (3) | 0.555 (2) | 0.4067 (17) | 0.075 (6)* | |
H7B | 0.252 (3) | 0.607 (2) | 0.4863 (17) | 0.084 (6)* | |
H7C | 0.576 (2) | 0.6648 (17) | 0.1643 (13) | 0.054 (5)* | |
H7D | 0.478 (2) | 0.6781 (18) | 0.2619 (15) | 0.061 (5)* | |
H8A | −0.119 (2) | 0.4277 (18) | 0.3014 (14) | 0.058 (5)* | |
H8B | −0.048 (2) | 0.4994 (19) | 0.3622 (15) | 0.062 (5)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0295 (5) | 0.0342 (6) | 0.0400 (6) | −0.0099 (4) | 0.0057 (4) | −0.0143 (5) |
C2 | 0.0353 (5) | 0.0380 (6) | 0.0333 (6) | −0.0102 (5) | 0.0008 (4) | −0.0151 (5) |
C3 | 0.0442 (6) | 0.0343 (6) | 0.0329 (6) | −0.0094 (5) | 0.0004 (5) | −0.0129 (5) |
C4 | 0.0430 (6) | 0.0430 (7) | 0.0358 (6) | −0.0153 (5) | 0.0064 (5) | −0.0214 (5) |
C5 | 0.0385 (6) | 0.0548 (8) | 0.0365 (6) | −0.0139 (6) | −0.0014 (5) | −0.0188 (6) |
C6 | 0.0329 (6) | 0.0422 (7) | 0.0389 (6) | −0.0057 (5) | −0.0015 (5) | −0.0083 (5) |
C7 | 0.0374 (6) | 0.0389 (6) | 0.0356 (6) | −0.0163 (5) | 0.0085 (5) | −0.0195 (5) |
C8 | 0.0446 (6) | 0.0391 (6) | 0.0321 (6) | −0.0115 (5) | −0.0014 (5) | −0.0098 (5) |
C9 | 0.0485 (7) | 0.0279 (5) | 0.0376 (6) | −0.0099 (5) | 0.0000 (5) | −0.0093 (5) |
C10 | 0.0371 (6) | 0.0324 (5) | 0.0344 (6) | −0.0131 (4) | 0.0055 (4) | −0.0151 (5) |
C11 | 0.0384 (6) | 0.0312 (6) | 0.0350 (6) | −0.0080 (5) | −0.0002 (5) | −0.0096 (5) |
C12 | 0.0418 (6) | 0.0271 (5) | 0.0409 (6) | −0.0099 (4) | 0.0070 (5) | −0.0135 (5) |
C13 | 0.0448 (6) | 0.0315 (5) | 0.0297 (5) | −0.0136 (5) | −0.0005 (5) | −0.0134 (5) |
C14 | 0.0394 (6) | 0.0249 (5) | 0.0281 (5) | −0.0092 (4) | −0.0024 (4) | −0.0100 (4) |
C15 | 0.0380 (6) | 0.0265 (5) | 0.0317 (5) | −0.0073 (4) | 0.0008 (4) | −0.0105 (4) |
N1 | 0.0362 (5) | 0.0353 (5) | 0.0616 (7) | −0.0111 (4) | 0.0050 (5) | −0.0169 (5) |
N2 | 0.0466 (6) | 0.0588 (7) | 0.0475 (6) | −0.0282 (5) | 0.0158 (5) | −0.0326 (6) |
N3 | 0.0446 (5) | 0.0344 (5) | 0.0288 (5) | −0.0170 (4) | 0.0032 (4) | −0.0148 (4) |
N4 | 0.0412 (5) | 0.0300 (5) | 0.0322 (5) | −0.0104 (4) | 0.0028 (4) | −0.0160 (4) |
N5 | 0.0440 (5) | 0.0357 (5) | 0.0360 (5) | −0.0178 (4) | 0.0036 (4) | −0.0175 (4) |
N6 | 0.0714 (8) | 0.0706 (8) | 0.0509 (7) | −0.0428 (7) | 0.0212 (6) | −0.0438 (7) |
N7 | 0.0581 (7) | 0.0516 (7) | 0.0411 (6) | −0.0309 (6) | 0.0084 (5) | −0.0269 (5) |
N8 | 0.0490 (6) | 0.0521 (7) | 0.0498 (7) | −0.0222 (5) | 0.0158 (5) | −0.0265 (6) |
O1 | 0.0798 (7) | 0.0498 (6) | 0.0523 (6) | −0.0234 (6) | −0.0038 (6) | −0.0293 (5) |
O2 | 0.0633 (6) | 0.0503 (6) | 0.0687 (7) | −0.0224 (5) | 0.0021 (5) | −0.0310 (5) |
O3 | 0.0767 (8) | 0.0327 (5) | 0.1046 (10) | −0.0105 (5) | −0.0261 (7) | −0.0024 (6) |
O4 | 0.0633 (6) | 0.0399 (5) | 0.0426 (5) | −0.0224 (4) | −0.0035 (4) | −0.0166 (4) |
O5 | 0.0642 (7) | 0.0895 (9) | 0.0527 (6) | −0.0272 (6) | −0.0010 (5) | −0.0398 (6) |
O6 | 0.0876 (8) | 0.0572 (6) | 0.0702 (7) | −0.0425 (6) | 0.0180 (6) | −0.0382 (6) |
O7 | 0.0817 (7) | 0.0497 (6) | 0.0421 (6) | −0.0346 (5) | 0.0143 (5) | −0.0242 (5) |
C1—C2 | 1.3766 (17) | C13—N6 | 1.3333 (16) |
C1—C6 | 1.3877 (18) | C13—N3 | 1.3414 (14) |
C1—N1 | 1.4501 (16) | C13—N5 | 1.3421 (16) |
C2—C3 | 1.3774 (17) | C14—N7 | 1.3326 (15) |
C2—H2 | 0.9300 | C14—N3 | 1.3381 (14) |
C3—C4 | 1.3857 (17) | C14—N4 | 1.3418 (16) |
C3—H3 | 0.9300 | C15—N8 | 1.3335 (17) |
C4—O1 | 1.3538 (15) | C15—N4 | 1.3384 (15) |
C4—C5 | 1.3852 (19) | C15—N5 | 1.3416 (15) |
C5—C6 | 1.3726 (19) | N1—O3 | 1.2176 (16) |
C5—H5 | 0.9300 | N1—O2 | 1.2266 (16) |
C6—H6 | 0.9300 | N2—O5 | 1.2212 (17) |
C7—C8 | 1.3804 (18) | N2—O6 | 1.2386 (17) |
C7—C12 | 1.3815 (18) | N6—H6A | 0.860 (18) |
C7—N2 | 1.4518 (15) | N6—H6B | 0.845 (18) |
C8—C9 | 1.3770 (17) | N7—H7C | 0.867 (17) |
C8—H8 | 0.9300 | N7—H7D | 0.894 (19) |
C9—C10 | 1.3871 (18) | N8—H8A | 0.830 (17) |
C9—H9 | 0.9300 | N8—H8B | 0.867 (19) |
C10—O4 | 1.3488 (14) | O1—H1 | 0.90 (2) |
C10—C11 | 1.3915 (17) | O4—H4 | 0.91 (2) |
C11—C12 | 1.3747 (17) | O7—H7A | 0.88 (2) |
C11—H11 | 0.9300 | O7—H7B | 0.84 (2) |
C12—H12 | 0.9300 | ||
C2—C1—C6 | 122.08 (11) | C11—C12—C7 | 119.00 (11) |
C2—C1—N1 | 118.88 (11) | C11—C12—H12 | 120.5 |
C6—C1—N1 | 119.04 (11) | C7—C12—H12 | 120.5 |
C1—C2—C3 | 118.59 (11) | N6—C13—N3 | 116.17 (11) |
C1—C2—H2 | 120.7 | N6—C13—N5 | 118.22 (11) |
C3—C2—H2 | 120.7 | N3—C13—N5 | 125.61 (10) |
C2—C3—C4 | 120.13 (11) | N7—C14—N3 | 117.08 (11) |
C2—C3—H3 | 119.9 | N7—C14—N4 | 117.29 (10) |
C4—C3—H3 | 119.9 | N3—C14—N4 | 125.61 (10) |
O1—C4—C5 | 117.44 (12) | N8—C15—N4 | 117.07 (11) |
O1—C4—C3 | 122.07 (12) | N8—C15—N5 | 117.58 (11) |
C5—C4—C3 | 120.48 (11) | N4—C15—N5 | 125.34 (10) |
C6—C5—C4 | 119.93 (12) | O3—N1—O2 | 122.26 (12) |
C6—C5—H5 | 120.0 | O3—N1—C1 | 118.70 (12) |
C4—C5—H5 | 120.0 | O2—N1—C1 | 119.04 (11) |
C5—C6—C1 | 118.78 (12) | O5—N2—O6 | 122.77 (11) |
C5—C6—H6 | 120.6 | O5—N2—C7 | 119.29 (12) |
C1—C6—H6 | 120.6 | O6—N2—C7 | 117.92 (12) |
C8—C7—C12 | 121.83 (10) | C14—N3—C13 | 114.25 (10) |
C8—C7—N2 | 119.31 (12) | C15—N4—C14 | 114.57 (10) |
C12—C7—N2 | 118.84 (11) | C15—N5—C13 | 114.40 (9) |
C9—C8—C7 | 118.99 (11) | C13—N6—H6A | 118.8 (12) |
C9—C8—H8 | 120.5 | C13—N6—H6B | 119.2 (12) |
C7—C8—H8 | 120.5 | H6A—N6—H6B | 122.0 (17) |
C8—C9—C10 | 119.96 (11) | C14—N7—H7C | 118.7 (11) |
C8—C9—H9 | 120.0 | C14—N7—H7D | 118.9 (11) |
C10—C9—H9 | 120.0 | H7C—N7—H7D | 121.0 (15) |
O4—C10—C9 | 122.67 (11) | C15—N8—H8A | 119.2 (12) |
O4—C10—C11 | 117.05 (11) | C15—N8—H8B | 119.5 (11) |
C9—C10—C11 | 120.27 (10) | H8A—N8—H8B | 121.1 (16) |
C12—C11—C10 | 119.93 (12) | C4—O1—H1 | 114.2 (14) |
C12—C11—H11 | 120.0 | C10—O4—H4 | 107.8 (12) |
C10—C11—H11 | 120.0 | H7A—O7—H7B | 108.7 (19) |
C6—C1—C2—C3 | 0.14 (18) | C2—C1—N1—O3 | 175.39 (13) |
N1—C1—C2—C3 | 179.25 (11) | C6—C1—N1—O3 | −5.47 (18) |
C1—C2—C3—C4 | −0.89 (18) | C2—C1—N1—O2 | −3.93 (17) |
C2—C3—C4—O1 | −178.18 (11) | C6—C1—N1—O2 | 175.21 (11) |
C2—C3—C4—C5 | 1.15 (18) | C8—C7—N2—O5 | 3.71 (17) |
O1—C4—C5—C6 | 178.73 (12) | C12—C7—N2—O5 | −174.89 (11) |
C3—C4—C5—C6 | −0.63 (19) | C8—C7—N2—O6 | −177.86 (11) |
C4—C5—C6—C1 | −0.12 (18) | C12—C7—N2—O6 | 3.55 (17) |
C2—C1—C6—C5 | 0.37 (18) | N7—C14—N3—C13 | 178.15 (11) |
N1—C1—C6—C5 | −178.74 (11) | N4—C14—N3—C13 | −3.37 (16) |
C12—C7—C8—C9 | 0.89 (18) | N6—C13—N3—C14 | −176.36 (11) |
N2—C7—C8—C9 | −177.66 (11) | N5—C13—N3—C14 | 3.84 (17) |
C7—C8—C9—C10 | 0.24 (19) | N8—C15—N4—C14 | −177.10 (11) |
C8—C9—C10—O4 | 179.76 (12) | N5—C15—N4—C14 | 4.13 (17) |
C8—C9—C10—C11 | −1.32 (18) | N7—C14—N4—C15 | 178.19 (11) |
O4—C10—C11—C12 | −179.73 (11) | N3—C14—N4—C15 | −0.29 (16) |
C9—C10—C11—C12 | 1.29 (18) | N8—C15—N5—C13 | 177.51 (11) |
C10—C11—C12—C7 | −0.18 (18) | N4—C15—N5—C13 | −3.73 (17) |
C8—C7—C12—C11 | −0.92 (18) | N6—C13—N5—C15 | 179.61 (12) |
N2—C7—C12—C11 | 177.64 (10) | N3—C13—N5—C15 | −0.59 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O7i | 0.90 (2) | 1.76 (2) | 2.6600 (18) | 172 (2) |
O4—H4···N5 | 0.91 (2) | 1.87 (2) | 2.7217 (16) | 157 (2) |
N6—H6A···O6ii | 0.860 (18) | 2.363 (19) | 3.0276 (16) | 134 (2) |
N6—H6B···N3iii | 0.845 (18) | 2.235 (19) | 3.080 (2) | 178 (2) |
O7—H7A···N4 | 0.88 (2) | 1.94 (2) | 2.8020 (18) | 166 (2) |
O7—H7B···O2iv | 0.84 (2) | 2.22 (2) | 3.0424 (18) | 164 (2) |
N7—H7C···O6v | 0.867 (17) | 2.250 (17) | 3.056 (2) | 155 (2) |
N7—H7D···O1v | 0.894 (19) | 2.049 (19) | 2.8996 (17) | 159 (2) |
N8—H8A···O3 | 0.830 (17) | 2.367 (18) | 3.158 (2) | 159 (2) |
N8—H8B···O7iv | 0.867 (19) | 2.517 (18) | 3.1890 (19) | 135 (2) |
Symmetry codes: (i) −x, −y, −z+1; (ii) −x, −y, −z; (iii) −x+1, −y+1, −z; (iv) −x, −y+1, −z+1; (v) x+1, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | 2C6H5NO3·C3H6N6·H2O |
Mr | 422.37 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 295 |
a, b, c (Å) | 7.123 (5), 10.577 (4), 13.680 (5) |
α, β, γ (°) | 68.256 (5), 88.772 (6), 76.604 (5) |
V (Å3) | 928.9 (8) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.30 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker Kappa APEXII |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.964, 0.976 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 21610, 5696, 4164 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.718 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.122, 1.03 |
No. of reflections | 5696 |
No. of parameters | 311 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.20, −0.25 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O7i | 0.90 (2) | 1.76 (2) | 2.6600 (18) | 172 (2) |
O4—H4···N5 | 0.91 (2) | 1.87 (2) | 2.7217 (16) | 157 (2) |
N6—H6A···O6ii | 0.860 (18) | 2.363 (19) | 3.0276 (16) | 134 (2) |
N6—H6B···N3iii | 0.845 (18) | 2.235 (19) | 3.080 (2) | 178 (2) |
O7—H7A···N4 | 0.88 (2) | 1.94 (2) | 2.8020 (18) | 166 (2) |
O7—H7B···O2iv | 0.84 (2) | 2.22 (2) | 3.0424 (18) | 164 (2) |
N7—H7C···O6v | 0.867 (17) | 2.250 (17) | 3.056 (2) | 155 (2) |
N7—H7D···O1v | 0.894 (19) | 2.049 (19) | 2.8996 (17) | 159 (2) |
N8—H8A···O3 | 0.830 (17) | 2.367 (18) | 3.158 (2) | 159 (2) |
N8—H8B···O7iv | 0.867 (19) | 2.517 (18) | 3.1890 (19) | 135 (2) |
Symmetry codes: (i) −x, −y, −z+1; (ii) −x, −y, −z; (iii) −x+1, −y+1, −z; (iv) −x, −y+1, −z+1; (v) x+1, y+1, z. |
Acknowledgements
The authors thank SAIF, IIT Madras, for the data collection.
References
Bruker (2004). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Cook, H. A., Klampfl, C. W. & Buchberger, W. (2005). Electrophoresis, 26, 1576–1583. Web of Science CrossRef PubMed CAS Google Scholar
Cousson, A., Nicolaï, B. & Fillaux, F. (2005). Acta Cryst. E61, o222–o224. Web of Science CSD CrossRef IUCr Journals Google Scholar
Rima, J., Abourida, M., Xu, T., Cho, I. K. & Kyriacos, S. (2008). J. Food Compost. Anal. 22, 689–693. Web of Science CrossRef Google Scholar
Sheldrick, G. M. (1996). SADABS, University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Melamines are used in the production of melamine foam in polymeric cleaning (Rima et al., 2008) and as a chemical intermediate in plastics manufacturing (Cook et al., 2005). Here, we report the crystal structure of a the title compound. The asymmetric unit contains one melamine molecule, two independent nitrophenol molecules and one solvent water molecule.
The geometric parameters of the melamine molecule (I) (Fig. 1) are comparable with those determined by Cousson et al. (2005). The melamine and nitrophenol molecules are essentially planar, with a maximum deviation of -0.0294 (10) Å for atom N4 in the least square plane (N6/C13/C14/N7/N4/C15/N8/N5), -0.0706 (12) Å for atom O2 in the least square plane (O1/C1-C6/N1/O2/O3) and 0.0742 (12) Å for atom O5 in the least square plane (O4/C10/C11/C12/C7/C8/C9/N2/O5/O6).
In the crystal, O—H···N, N—H···O and O—H···O hydrogen bonds (Table 1 & Fig. 2) and π–π interactions [Cg1···Cg1 (1-x,-y,1-z) distance of 3.749 (3)Å; Cg1···Cg2 (x,-1+y,z) distance of 3.728 (3)Å and Cg2···Cg1 (x,1+y,z) distance of 3.728 (3)Å; Cg1 and Cg2 are the centroids of the rings (C1-C6) and (C7-C12), respectively] connect the components of the structure into a three-dimensional network.