organic compounds
Trimethylammonium 5-(2,4-dinitrophenyl)-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-olate 0.125-hydrate
aPG and Research Department of Chemistry, Seethalakshmi Ramaswami College, Tiruchirappalli 620 002, Tamil Nadu, India
*Correspondence e-mail: kalaivbalaj@yahoo.co.in
The 3H10N+·C10H5N4O7−·0.125H2O [trivial name: trimethylammonium 5-(2,4-dinitrophenyl)barbiturate 0.125-hydrate], contains two independent cations, two independent anions and a 0.25-occupancy solvent water molecule. In one of the cations, the C atoms are disordered over two sets of sites with refined occupancies of 0.538 (8) and 0.462 (8). In the anions, the dihedral angles between the pyrimidine and benzene rings are 42.77 (6) and 46.55 (7)°. In the crystal, N—H⋯O hydrogen bonds connect anions and cations into chains along [010]. Within these chains, R22(8) ring motifs are formed by inversion-related barbiturate anions. The H atoms of the partial occupancy water molecule were not located nor included in the refinement.
of the title salt CRelated literature
For the different types of anionic sigma complexes, see: Terrier (1982); Al-Kaysi et al. (2005). For the utility of spiro Meisenheimer complexes, see: Gallardo et al. (2007); Al-Kaysi et al. 2008). For the biological activity of carbanionic sigma complexes related to the title compound, see: Kalaivani et al. (2008); Kalaivani & Buvaneswari (2010). For the crystal structures of related see: Kalaivani & Malarvizhi (2009); Kalaivani et al. (2012). For hydrogen-bond graph-set motifs, see: Bernstein et al. (1995).
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: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536813007915/lh5595sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813007915/lh5595Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813007915/lh5595Isup3.cml
1-Chloro-2,4-dinitrobenzene (2.02 g, 0.01 mol) was dissolved in 20 ml of absolute alcohol. Barbituric acid (1.28 g, 0.01 mol) was also dissolved in 30 ml of absolute alcohol. After mixing these two solutions, 3 ml of trimethylamine (0.03 mol) was added and shaken well for 6 hrs. The solution was filtered and the clear solution was kept as such at room temperature. After a period of four weeks, dark shiny maroon red coloured crystals formed from the solution. The crystals were filtered and washed with 30 ml of dry ether and recrystallized from absolute ethanol (M.p: 545K; yield: 80%). Good quality crystals for single crystal X-ray studies were obtained by slow evaporation of ethanol at room temperature.
The N-bound H atoms were located in a difference
and refind with a N—H distance restraint of 0.90 (2) Å. The C-bound hydrogen atoms were placed in calculated positions and refined as riding atoms: C—H = 0.93 and 0.96 Å for CH and CH3 H atoms, respectively, with Uiso(H) = k × Ueq(C), where k = 1.5 for methyl H atoms and = 1.2 for other H atoms. The H atoms of the partial occupancy water molecule were not located nor are they included in the They are however included in the molecular formula.Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The asymmetric unit of the title compound, with displacement ellipsoids drawn at the 30% probability level. | |
Fig. 2. Part of the crystal atructure of the title compound with hydrogen bonds shown as dashed lines. |
C3H10N+·C10H5N4O7−·0.125H2O | F(000) = 1482 |
Mr = 355.29 | Dx = 1.464 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 7398 reflections |
a = 15.0410 (5) Å | θ = 2.3–23.9° |
b = 10.5460 (3) Å | µ = 0.12 mm−1 |
c = 20.4170 (8) Å | T = 293 K |
β = 94.953 (1)° | Needle, red |
V = 3226.50 (19) Å3 | 0.30 × 0.20 × 0.20 mm |
Z = 8 |
Bruker Kappa APEXII CCD diffractometer | 5517 independent reflections |
Radiation source: fine-focus sealed tube | 3780 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.039 |
ω and ϕ scans | θmax = 24.7°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −17→17 |
Tmin = 0.960, Tmax = 0.987 | k = −12→12 |
26803 measured reflections | l = −24→23 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.045 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.130 | w = 1/[σ2(Fo2) + (0.0564P)2 + 1.2781P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max < 0.001 |
5517 reflections | Δρmax = 0.21 e Å−3 |
516 parameters | Δρmin = −0.21 e Å−3 |
36 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0014 (4) |
C3H10N+·C10H5N4O7−·0.125H2O | V = 3226.50 (19) Å3 |
Mr = 355.29 | Z = 8 |
Monoclinic, P21/c | Mo Kα radiation |
a = 15.0410 (5) Å | µ = 0.12 mm−1 |
b = 10.5460 (3) Å | T = 293 K |
c = 20.4170 (8) Å | 0.30 × 0.20 × 0.20 mm |
β = 94.953 (1)° |
Bruker Kappa APEXII CCD diffractometer | 5517 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 3780 reflections with I > 2σ(I) |
Tmin = 0.960, Tmax = 0.987 | Rint = 0.039 |
26803 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 36 restraints |
wR(F2) = 0.130 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.02 | Δρmax = 0.21 e Å−3 |
5517 reflections | Δρmin = −0.21 e Å−3 |
516 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 > 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. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
C1 | 0.49436 (14) | 0.3608 (2) | 0.41756 (12) | 0.0407 (5) | |
C2 | 0.34407 (14) | 0.3929 (2) | 0.36471 (11) | 0.0397 (5) | |
C3 | 0.33767 (13) | 0.26371 (19) | 0.34916 (11) | 0.0375 (5) | |
C4 | 0.40782 (14) | 0.18045 (19) | 0.37118 (11) | 0.0373 (5) | |
C5 | 0.25811 (14) | 0.2167 (2) | 0.31023 (11) | 0.0412 (5) | |
C6 | 0.17278 (15) | 0.2572 (2) | 0.32317 (13) | 0.0508 (6) | |
H6 | 0.1672 | 0.3167 | 0.3562 | 0.061* | |
C7 | 0.09634 (16) | 0.2114 (3) | 0.28831 (15) | 0.0630 (8) | |
H7 | 0.0406 | 0.2431 | 0.2962 | 0.076* | |
C8 | 0.10415 (18) | 0.1187 (3) | 0.24204 (14) | 0.0611 (8) | |
C9 | 0.18518 (19) | 0.0769 (3) | 0.22658 (13) | 0.0603 (7) | |
H9 | 0.1895 | 0.0146 | 0.1947 | 0.072* | |
C10 | 0.26101 (15) | 0.1286 (2) | 0.25901 (12) | 0.0472 (6) | |
C11 | 0.48116 (14) | 0.24816 (19) | 0.58140 (11) | 0.0399 (5) | |
C12 | 0.38713 (14) | 0.06518 (19) | 0.54816 (11) | 0.0382 (5) | |
C13 | 0.31760 (13) | 0.14908 (19) | 0.52559 (11) | 0.0376 (5) | |
C14 | 0.33028 (13) | 0.28091 (19) | 0.53044 (11) | 0.0389 (5) | |
C15 | 0.23348 (14) | 0.1023 (2) | 0.49394 (12) | 0.0422 (6) | |
C16 | 0.23265 (17) | 0.0110 (2) | 0.44466 (13) | 0.0525 (6) | |
H16 | 0.2862 | −0.0268 | 0.4359 | 0.063* | |
C17 | 0.1550 (2) | −0.0257 (2) | 0.40826 (14) | 0.0646 (8) | |
H17 | 0.1562 | −0.0876 | 0.3759 | 0.077* | |
C18 | 0.07617 (18) | 0.0312 (3) | 0.42094 (16) | 0.0675 (9) | |
C19 | 0.07232 (17) | 0.1193 (3) | 0.46899 (16) | 0.0670 (8) | |
H19 | 0.0183 | 0.1569 | 0.4769 | 0.080* | |
C20 | 0.14985 (15) | 0.1520 (2) | 0.50569 (14) | 0.0530 (7) | |
C21 | 0.2649 (2) | 0.6911 (3) | 0.4683 (2) | 0.0951 (12) | |
H21A | 0.2330 | 0.7699 | 0.4647 | 0.143* | |
H21B | 0.2811 | 0.6660 | 0.4257 | 0.143* | |
H21C | 0.3179 | 0.7012 | 0.4976 | 0.143* | |
C22 | 0.1287 (2) | 0.5725 (3) | 0.44899 (19) | 0.0935 (11) | |
H22A | 0.0955 | 0.5024 | 0.4643 | 0.140* | |
H22B | 0.1462 | 0.5540 | 0.4059 | 0.140* | |
H22C | 0.0921 | 0.6473 | 0.4472 | 0.140* | |
C23 | 0.1874 (4) | 0.6194 (5) | 0.5611 (2) | 0.1438 (19) | |
H23A | 0.1611 | 0.7020 | 0.5632 | 0.216* | |
H23B | 0.2412 | 0.6162 | 0.5901 | 0.216* | |
H23C | 0.1462 | 0.5567 | 0.5743 | 0.216* | |
N1 | 0.48201 (12) | 0.23460 (17) | 0.40610 (10) | 0.0400 (5) | |
N2 | 0.42297 (12) | 0.43476 (18) | 0.39760 (10) | 0.0450 (5) | |
N3 | 0.34457 (16) | 0.0974 (2) | 0.23077 (11) | 0.0627 (6) | |
N4 | 0.0238 (2) | 0.0651 (3) | 0.20626 (16) | 0.0905 (9) | |
N5 | 0.46542 (12) | 0.12161 (16) | 0.57581 (10) | 0.0411 (5) | |
N6 | 0.41223 (12) | 0.32321 (17) | 0.55772 (10) | 0.0412 (5) | |
N7 | 0.13846 (15) | 0.2384 (2) | 0.56078 (15) | 0.0695 (7) | |
N8 | −0.0066 (2) | −0.0018 (4) | 0.38078 (18) | 0.0998 (11) | |
N9 | 0.20830 (14) | 0.5938 (2) | 0.49399 (12) | 0.0585 (6) | |
N10 | 0.31143 (19) | 0.5901 (3) | 0.23666 (15) | 0.0822 (8) | |
C24 | 0.3960 (6) | 0.6339 (15) | 0.2289 (5) | 0.139 (4) | 0.538 (8) |
H24A | 0.4118 | 0.6979 | 0.2612 | 0.208* | 0.538 (8) |
H24B | 0.3975 | 0.6694 | 0.1857 | 0.208* | 0.538 (8) |
H24C | 0.4376 | 0.5650 | 0.2343 | 0.208* | 0.538 (8) |
C25 | 0.2718 (9) | 0.4906 (11) | 0.1921 (8) | 0.100 (3) | 0.538 (8) |
H25A | 0.2127 | 0.4713 | 0.2035 | 0.149* | 0.538 (8) |
H25B | 0.3080 | 0.4156 | 0.1963 | 0.149* | 0.538 (8) |
H25C | 0.2690 | 0.5204 | 0.1475 | 0.149* | 0.538 (8) |
C26 | 0.2437 (8) | 0.7042 (9) | 0.2306 (6) | 0.166 (5) | 0.538 (8) |
H26A | 0.1848 | 0.6738 | 0.2367 | 0.249* | 0.538 (8) |
H26B | 0.2439 | 0.7417 | 0.1878 | 0.249* | 0.538 (8) |
H26C | 0.2609 | 0.7665 | 0.2635 | 0.249* | 0.538 (8) |
C24' | 0.4071 (5) | 0.5293 (11) | 0.2295 (5) | 0.099 (3) | 0.462 (8) |
H24D | 0.4483 | 0.5583 | 0.2649 | 0.149* | 0.462 (8) |
H24E | 0.4278 | 0.5545 | 0.1883 | 0.149* | 0.462 (8) |
H24F | 0.4027 | 0.4386 | 0.2311 | 0.149* | 0.462 (8) |
C25' | 0.2503 (10) | 0.5448 (16) | 0.1872 (11) | 0.133 (6) | 0.462 (8) |
H25D | 0.2447 | 0.4546 | 0.1913 | 0.200* | 0.462 (8) |
H25E | 0.2707 | 0.5648 | 0.1451 | 0.200* | 0.462 (8) |
H25F | 0.1933 | 0.5839 | 0.1909 | 0.200* | 0.462 (8) |
C26' | 0.3305 (12) | 0.7243 (9) | 0.2384 (7) | 0.158 (5) | 0.462 (8) |
H26D | 0.3714 | 0.7431 | 0.2758 | 0.238* | 0.462 (8) |
H26E | 0.2761 | 0.7708 | 0.2414 | 0.238* | 0.462 (8) |
H26F | 0.3567 | 0.7484 | 0.1989 | 0.238* | 0.462 (8) |
O1 | 0.56366 (10) | 0.40504 (14) | 0.44398 (9) | 0.0549 (5) | |
O2 | 0.28668 (10) | 0.47693 (14) | 0.34922 (9) | 0.0503 (4) | |
O3 | 0.40882 (10) | 0.06395 (13) | 0.36237 (8) | 0.0474 (4) | |
O4 | 0.03283 (18) | −0.0250 (3) | 0.16961 (14) | 0.1164 (10) | |
O5 | −0.04734 (18) | 0.1135 (3) | 0.21523 (16) | 0.1303 (11) | |
O6 | 0.35400 (17) | −0.0101 (2) | 0.21072 (13) | 0.1034 (8) | |
O7 | 0.39882 (13) | 0.1810 (2) | 0.22575 (10) | 0.0735 (6) | |
O8 | 0.55192 (10) | 0.29224 (14) | 0.60553 (9) | 0.0517 (4) | |
O9 | 0.38360 (10) | −0.05263 (13) | 0.54731 (9) | 0.0501 (4) | |
O10 | 0.27374 (10) | 0.36162 (14) | 0.51066 (9) | 0.0544 (5) | |
O11 | 0.18612 (14) | 0.2261 (2) | 0.61110 (12) | 0.0802 (6) | |
O12 | 0.07827 (14) | 0.3173 (2) | 0.55353 (15) | 0.1107 (9) | |
O13 | −0.07427 (19) | 0.0598 (3) | 0.39067 (16) | 0.1369 (13) | |
O14 | −0.0034 (2) | −0.0854 (4) | 0.34104 (18) | 0.1460 (14) | |
O15 | 0.3059 (7) | 0.8311 (10) | 0.3338 (6) | 0.112 (3) | 0.25 |
H1A | 0.5215 (16) | 0.188 (2) | 0.4194 (12) | 0.047 (7)* | |
H2A | 0.4307 (17) | 0.519 (3) | 0.4003 (13) | 0.065 (8)* | |
H5A | 0.5069 (16) | 0.075 (2) | 0.5918 (12) | 0.048 (7)* | |
H6A | 0.4201 (15) | 0.403 (2) | 0.5586 (11) | 0.046 (7)* | |
H9A | 0.242 (2) | 0.507 (3) | 0.4982 (16) | 0.100 (10)* | |
H10 | 0.301 (2) | 0.553 (3) | 0.2815 (19) | 0.101 (11)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0379 (12) | 0.0329 (11) | 0.0502 (15) | 0.0000 (10) | −0.0031 (11) | 0.0029 (10) |
C2 | 0.0346 (12) | 0.0361 (11) | 0.0472 (14) | 0.0022 (10) | −0.0031 (10) | 0.0048 (10) |
C3 | 0.0345 (11) | 0.0343 (11) | 0.0425 (13) | 0.0005 (9) | −0.0043 (10) | 0.0018 (10) |
C4 | 0.0378 (12) | 0.0331 (11) | 0.0405 (13) | −0.0002 (9) | 0.0015 (10) | 0.0010 (10) |
C5 | 0.0413 (13) | 0.0330 (11) | 0.0482 (14) | −0.0021 (9) | −0.0025 (11) | 0.0100 (10) |
C6 | 0.0417 (14) | 0.0448 (13) | 0.0650 (17) | −0.0020 (11) | −0.0008 (12) | 0.0049 (12) |
C7 | 0.0403 (14) | 0.0642 (17) | 0.082 (2) | −0.0041 (12) | −0.0072 (14) | 0.0227 (16) |
C8 | 0.0547 (17) | 0.0672 (18) | 0.0574 (18) | −0.0231 (14) | −0.0187 (14) | 0.0147 (15) |
C9 | 0.0689 (19) | 0.0590 (16) | 0.0505 (17) | −0.0171 (14) | −0.0097 (14) | 0.0023 (13) |
C10 | 0.0492 (14) | 0.0428 (13) | 0.0478 (15) | −0.0063 (11) | −0.0054 (12) | 0.0035 (11) |
C11 | 0.0346 (12) | 0.0325 (11) | 0.0520 (15) | −0.0001 (9) | −0.0004 (11) | 0.0023 (10) |
C12 | 0.0351 (12) | 0.0315 (11) | 0.0473 (14) | 0.0007 (9) | 0.0004 (10) | 0.0007 (10) |
C13 | 0.0302 (11) | 0.0312 (11) | 0.0503 (14) | −0.0010 (9) | −0.0020 (10) | 0.0023 (10) |
C14 | 0.0323 (12) | 0.0327 (11) | 0.0509 (14) | 0.0025 (9) | −0.0005 (10) | 0.0037 (10) |
C15 | 0.0361 (12) | 0.0334 (11) | 0.0557 (15) | −0.0035 (9) | −0.0049 (11) | 0.0116 (11) |
C16 | 0.0523 (15) | 0.0396 (13) | 0.0634 (17) | −0.0073 (11) | −0.0073 (13) | 0.0049 (12) |
C17 | 0.077 (2) | 0.0494 (15) | 0.0633 (19) | −0.0224 (14) | −0.0185 (15) | 0.0129 (13) |
C18 | 0.0473 (17) | 0.076 (2) | 0.075 (2) | −0.0262 (15) | −0.0223 (15) | 0.0277 (17) |
C19 | 0.0365 (14) | 0.078 (2) | 0.085 (2) | −0.0084 (13) | −0.0068 (14) | 0.0288 (18) |
C20 | 0.0357 (13) | 0.0511 (14) | 0.0710 (18) | −0.0039 (11) | −0.0030 (12) | 0.0156 (13) |
C21 | 0.073 (2) | 0.0631 (19) | 0.146 (3) | −0.0026 (16) | −0.014 (2) | 0.024 (2) |
C22 | 0.0570 (19) | 0.099 (3) | 0.121 (3) | 0.0029 (17) | −0.0150 (19) | −0.006 (2) |
C23 | 0.202 (5) | 0.153 (4) | 0.079 (3) | 0.050 (4) | 0.025 (3) | −0.009 (3) |
N1 | 0.0356 (10) | 0.0291 (10) | 0.0535 (13) | 0.0048 (8) | −0.0074 (9) | 0.0019 (9) |
N2 | 0.0393 (11) | 0.0268 (10) | 0.0666 (14) | 0.0017 (8) | −0.0092 (10) | −0.0007 (9) |
N3 | 0.0672 (15) | 0.0638 (15) | 0.0561 (15) | 0.0007 (13) | 0.0006 (12) | −0.0126 (12) |
N4 | 0.072 (2) | 0.116 (3) | 0.078 (2) | −0.0380 (19) | −0.0195 (16) | 0.0198 (19) |
N5 | 0.0321 (10) | 0.0303 (10) | 0.0591 (13) | 0.0031 (8) | −0.0073 (9) | 0.0012 (9) |
N6 | 0.0375 (10) | 0.0248 (9) | 0.0595 (13) | −0.0011 (8) | −0.0055 (9) | 0.0018 (9) |
N7 | 0.0423 (13) | 0.0651 (15) | 0.103 (2) | 0.0020 (12) | 0.0183 (14) | −0.0020 (15) |
N8 | 0.073 (2) | 0.120 (3) | 0.098 (3) | −0.047 (2) | −0.0348 (19) | 0.046 (2) |
N9 | 0.0573 (13) | 0.0423 (12) | 0.0743 (17) | 0.0121 (10) | −0.0035 (12) | 0.0044 (11) |
N10 | 0.093 (2) | 0.0820 (19) | 0.0712 (19) | −0.0091 (16) | 0.0058 (16) | 0.0140 (16) |
C24 | 0.078 (5) | 0.220 (12) | 0.120 (6) | −0.044 (7) | 0.019 (5) | 0.010 (9) |
C25 | 0.077 (7) | 0.147 (9) | 0.071 (5) | −0.001 (6) | −0.016 (5) | 0.007 (6) |
C26 | 0.163 (9) | 0.097 (6) | 0.240 (11) | 0.042 (6) | 0.033 (9) | 0.079 (7) |
C24' | 0.070 (5) | 0.145 (9) | 0.085 (6) | −0.017 (6) | 0.016 (4) | 0.036 (7) |
C25' | 0.070 (8) | 0.214 (17) | 0.107 (8) | −0.013 (9) | −0.041 (6) | 0.016 (12) |
C26' | 0.199 (12) | 0.099 (7) | 0.168 (9) | −0.004 (8) | −0.043 (10) | 0.033 (7) |
O1 | 0.0434 (9) | 0.0375 (8) | 0.0794 (13) | −0.0030 (7) | −0.0200 (9) | 0.0010 (8) |
O2 | 0.0409 (9) | 0.0354 (8) | 0.0724 (12) | 0.0064 (7) | −0.0071 (8) | 0.0059 (8) |
O3 | 0.0463 (9) | 0.0297 (8) | 0.0637 (11) | 0.0029 (7) | −0.0088 (8) | −0.0038 (7) |
O4 | 0.113 (2) | 0.138 (2) | 0.093 (2) | −0.0637 (18) | −0.0212 (16) | −0.0162 (18) |
O5 | 0.0599 (15) | 0.183 (3) | 0.142 (3) | −0.0275 (18) | −0.0307 (16) | 0.010 (2) |
O6 | 0.1144 (19) | 0.0792 (16) | 0.119 (2) | 0.0062 (14) | 0.0223 (16) | −0.0437 (15) |
O7 | 0.0633 (12) | 0.0905 (15) | 0.0681 (14) | −0.0123 (11) | 0.0136 (10) | −0.0077 (11) |
O8 | 0.0375 (9) | 0.0384 (8) | 0.0757 (12) | −0.0049 (7) | −0.0147 (8) | 0.0018 (8) |
O9 | 0.0439 (9) | 0.0267 (8) | 0.0772 (12) | 0.0019 (6) | −0.0098 (8) | −0.0011 (8) |
O10 | 0.0398 (9) | 0.0344 (8) | 0.0866 (13) | 0.0058 (7) | −0.0094 (8) | 0.0104 (8) |
O11 | 0.0713 (14) | 0.0872 (15) | 0.0830 (16) | −0.0027 (11) | 0.0122 (12) | −0.0153 (13) |
O12 | 0.0624 (13) | 0.1029 (18) | 0.169 (3) | 0.0362 (13) | 0.0214 (15) | −0.0064 (17) |
O13 | 0.0581 (16) | 0.193 (3) | 0.151 (3) | −0.0261 (19) | −0.0423 (17) | 0.038 (2) |
O14 | 0.135 (3) | 0.155 (3) | 0.135 (3) | −0.078 (2) | −0.064 (2) | 0.006 (2) |
O15 | 0.096 (7) | 0.117 (8) | 0.120 (9) | 0.001 (6) | −0.012 (6) | 0.015 (7) |
C1—O1 | 1.224 (2) | C22—N9 | 1.462 (4) |
C1—N2 | 1.361 (3) | C22—H22A | 0.9600 |
C1—N1 | 1.361 (3) | C22—H22B | 0.9600 |
C2—O2 | 1.258 (2) | C22—H22C | 0.9600 |
C2—N2 | 1.384 (3) | C23—N9 | 1.458 (5) |
C2—C3 | 1.401 (3) | C23—H23A | 0.9600 |
C3—C4 | 1.416 (3) | C23—H23B | 0.9600 |
C3—C5 | 1.465 (3) | C23—H23C | 0.9600 |
C4—O3 | 1.242 (2) | N1—H1A | 0.80 (2) |
C4—N1 | 1.394 (3) | N2—H2A | 0.89 (3) |
C5—C6 | 1.399 (3) | N3—O7 | 1.212 (3) |
C5—C10 | 1.402 (3) | N3—O6 | 1.217 (3) |
C6—C7 | 1.386 (3) | N4—O5 | 1.213 (4) |
C6—H6 | 0.9300 | N4—O4 | 1.225 (4) |
C7—C8 | 1.372 (4) | N5—H5A | 0.84 (2) |
C7—H7 | 0.9300 | N6—H6A | 0.85 (2) |
C8—C9 | 1.359 (4) | N7—O11 | 1.208 (3) |
C8—N4 | 1.470 (4) | N7—O12 | 1.229 (3) |
C9—C10 | 1.381 (3) | N8—O14 | 1.202 (5) |
C9—H9 | 0.9300 | N8—O13 | 1.239 (5) |
C10—N3 | 1.465 (3) | N9—H9A | 1.04 (3) |
C11—O8 | 1.225 (2) | N10—C24 | 1.375 (8) |
C11—N5 | 1.359 (3) | N10—C25' | 1.390 (12) |
C11—N6 | 1.360 (3) | N10—C26' | 1.445 (9) |
C12—O9 | 1.244 (2) | N10—C25 | 1.480 (10) |
C12—N5 | 1.394 (3) | N10—C26 | 1.575 (8) |
C12—C13 | 1.416 (3) | N10—C24' | 1.593 (9) |
C13—C14 | 1.406 (3) | N10—H10 | 1.02 (4) |
C13—C15 | 1.456 (3) | C24—H24A | 0.9600 |
C14—O10 | 1.246 (2) | C24—H24B | 0.9600 |
C14—N6 | 1.382 (3) | C24—H24C | 0.9600 |
C15—C16 | 1.392 (3) | C25—H25A | 0.9600 |
C15—C20 | 1.402 (3) | C25—H25B | 0.9600 |
C16—C17 | 1.384 (3) | C25—H25C | 0.9600 |
C16—H16 | 0.9300 | C26—H26A | 0.9600 |
C17—C18 | 1.374 (4) | C26—H26B | 0.9600 |
C17—H17 | 0.9300 | C26—H26C | 0.9600 |
C18—C19 | 1.356 (4) | C24'—H24D | 0.9600 |
C18—N8 | 1.471 (4) | C24'—H24E | 0.9600 |
C19—C20 | 1.374 (3) | C24'—H24F | 0.9600 |
C19—H19 | 0.9300 | C25'—H25D | 0.9600 |
C20—N7 | 1.469 (4) | C25'—H25E | 0.9600 |
C21—N9 | 1.459 (4) | C25'—H25F | 0.9600 |
C21—H21A | 0.9600 | C26'—H26D | 0.9600 |
C21—H21B | 0.9600 | C26'—H26E | 0.9600 |
C21—H21C | 0.9600 | C26'—H26F | 0.9600 |
O1—C1—N2 | 122.3 (2) | C2—N2—H2A | 116.5 (16) |
O1—C1—N1 | 123.1 (2) | O7—N3—O6 | 123.4 (3) |
N2—C1—N1 | 114.60 (19) | O7—N3—C10 | 118.5 (2) |
O2—C2—N2 | 116.01 (19) | O6—N3—C10 | 118.1 (2) |
O2—C2—C3 | 126.6 (2) | O5—N4—O4 | 124.4 (3) |
N2—C2—C3 | 117.34 (18) | O5—N4—C8 | 117.5 (4) |
C2—C3—C4 | 119.78 (18) | O4—N4—C8 | 118.2 (3) |
C2—C3—C5 | 119.30 (18) | C11—N5—C12 | 126.03 (19) |
C4—C3—C5 | 120.92 (18) | C11—N5—H5A | 115.3 (16) |
O3—C4—N1 | 117.40 (18) | C12—N5—H5A | 118.6 (16) |
O3—C4—C3 | 125.84 (19) | C11—N6—C14 | 125.57 (18) |
N1—C4—C3 | 116.76 (18) | C11—N6—H6A | 118.0 (15) |
C6—C5—C10 | 115.5 (2) | C14—N6—H6A | 116.5 (15) |
C6—C5—C3 | 120.9 (2) | O11—N7—O12 | 123.5 (3) |
C10—C5—C3 | 123.5 (2) | O11—N7—C20 | 119.0 (2) |
C7—C6—C5 | 122.1 (3) | O12—N7—C20 | 117.5 (3) |
C7—C6—H6 | 119.0 | O14—N8—O13 | 125.1 (3) |
C5—C6—H6 | 119.0 | O14—N8—C18 | 117.9 (4) |
C8—C7—C6 | 119.0 (3) | O13—N8—C18 | 116.9 (4) |
C8—C7—H7 | 120.5 | C23—N9—C21 | 112.8 (3) |
C6—C7—H7 | 120.5 | C23—N9—C22 | 112.8 (3) |
C9—C8—C7 | 121.6 (2) | C21—N9—C22 | 110.7 (3) |
C9—C8—N4 | 118.4 (3) | C23—N9—H9A | 103.1 (18) |
C7—C8—N4 | 120.0 (3) | C21—N9—H9A | 110.7 (18) |
C8—C9—C10 | 118.7 (3) | C22—N9—H9A | 106.3 (18) |
C8—C9—H9 | 120.6 | C24—N10—C25' | 126.3 (12) |
C10—C9—H9 | 120.6 | C24—N10—C26' | 59.3 (6) |
C9—C10—C5 | 122.8 (2) | C25'—N10—C26' | 118.1 (8) |
C9—C10—N3 | 115.1 (2) | C24—N10—C25 | 119.6 (8) |
C5—C10—N3 | 121.7 (2) | C25'—N10—C25 | 26.4 (8) |
O8—C11—N5 | 123.06 (19) | C26'—N10—C25 | 141.1 (8) |
O8—C11—N6 | 122.11 (19) | C24—N10—C26 | 109.4 (7) |
N5—C11—N6 | 114.83 (19) | C25'—N10—C26 | 79.7 (8) |
O9—C12—N5 | 117.75 (18) | C26'—N10—C26 | 51.6 (6) |
O9—C12—C13 | 126.16 (19) | C25—N10—C26 | 105.6 (6) |
N5—C12—C13 | 116.05 (18) | C24—N10—C24' | 43.4 (6) |
C14—C13—C12 | 120.20 (18) | C25'—N10—C24' | 109.9 (9) |
C14—C13—C15 | 118.26 (18) | C26'—N10—C24' | 102.6 (7) |
C12—C13—C15 | 121.46 (18) | C25—N10—C24' | 88.7 (7) |
O10—C14—N6 | 118.06 (18) | C26—N10—C24' | 152.1 (5) |
O10—C14—C13 | 124.63 (19) | C24—N10—H10 | 116.9 (19) |
N6—C14—C13 | 117.29 (18) | C25'—N10—H10 | 112 (2) |
C16—C15—C20 | 115.5 (2) | C26'—N10—H10 | 114 (2) |
C16—C15—C13 | 120.5 (2) | C25—N10—H10 | 101 (2) |
C20—C15—C13 | 123.8 (2) | C26—N10—H10 | 102.1 (19) |
C17—C16—C15 | 122.4 (3) | C24'—N10—H10 | 98.3 (19) |
C17—C16—H16 | 118.8 | N10—C24—H24A | 109.5 |
C15—C16—H16 | 118.8 | N10—C24—H24B | 109.5 |
C18—C17—C16 | 118.6 (3) | H24A—C24—H24B | 109.5 |
C18—C17—H17 | 120.7 | N10—C24—H24C | 109.5 |
C16—C17—H17 | 120.7 | H24A—C24—H24C | 109.5 |
C19—C18—C17 | 121.8 (2) | H24B—C24—H24C | 109.5 |
C19—C18—N8 | 118.6 (3) | N10—C25—H25A | 109.5 |
C17—C18—N8 | 119.6 (4) | N10—C25—H25B | 109.5 |
C18—C19—C20 | 118.6 (3) | H25A—C25—H25B | 109.5 |
C18—C19—H19 | 120.7 | N10—C25—H25C | 109.5 |
C20—C19—H19 | 120.7 | H25A—C25—H25C | 109.5 |
C19—C20—C15 | 123.0 (3) | H25B—C25—H25C | 109.5 |
C19—C20—N7 | 115.0 (2) | N10—C26—H26A | 109.5 |
C15—C20—N7 | 121.9 (2) | N10—C26—H26B | 109.5 |
N9—C21—H21A | 109.5 | H26A—C26—H26B | 109.5 |
N9—C21—H21B | 109.5 | N10—C26—H26C | 109.5 |
H21A—C21—H21B | 109.5 | H26A—C26—H26C | 109.5 |
N9—C21—H21C | 109.5 | H26B—C26—H26C | 109.5 |
H21A—C21—H21C | 109.5 | N10—C24'—H24D | 109.5 |
H21B—C21—H21C | 109.5 | N10—C24'—H24E | 109.5 |
N9—C22—H22A | 109.5 | H24D—C24'—H24E | 109.5 |
N9—C22—H22B | 109.5 | N10—C24'—H24F | 109.5 |
H22A—C22—H22B | 109.5 | H24D—C24'—H24F | 109.5 |
N9—C22—H22C | 109.5 | H24E—C24'—H24F | 109.5 |
H22A—C22—H22C | 109.5 | N10—C25'—H25D | 109.5 |
H22B—C22—H22C | 109.5 | N10—C25'—H25E | 109.5 |
N9—C23—H23A | 109.5 | H25D—C25'—H25E | 109.5 |
N9—C23—H23B | 109.5 | N10—C25'—H25F | 109.5 |
H23A—C23—H23B | 109.5 | H25D—C25'—H25F | 109.5 |
N9—C23—H23C | 109.5 | H25E—C25'—H25F | 109.5 |
H23A—C23—H23C | 109.5 | N10—C26'—H26D | 109.5 |
H23B—C23—H23C | 109.5 | N10—C26'—H26E | 109.5 |
C1—N1—C4 | 125.44 (19) | H26D—C26'—H26E | 109.5 |
C1—N1—H1A | 117.2 (17) | N10—C26'—H26F | 109.5 |
C4—N1—H1A | 117.3 (17) | H26D—C26'—H26F | 109.5 |
C1—N2—C2 | 125.73 (19) | H26E—C26'—H26F | 109.5 |
C1—N2—H2A | 117.0 (17) | ||
O2—C2—C3—C4 | −179.0 (2) | C16—C17—C18—N8 | 177.1 (2) |
N2—C2—C3—C4 | 4.4 (3) | C17—C18—C19—C20 | 0.1 (4) |
O2—C2—C3—C5 | 1.0 (4) | N8—C18—C19—C20 | −178.7 (2) |
N2—C2—C3—C5 | −175.6 (2) | C18—C19—C20—C15 | 2.8 (4) |
C2—C3—C4—O3 | 177.7 (2) | C18—C19—C20—N7 | −174.2 (2) |
C5—C3—C4—O3 | −2.3 (4) | C16—C15—C20—C19 | −3.7 (4) |
C2—C3—C4—N1 | −2.0 (3) | C13—C15—C20—C19 | 170.6 (2) |
C5—C3—C4—N1 | 178.0 (2) | C16—C15—C20—N7 | 173.1 (2) |
C2—C3—C5—C6 | −43.2 (3) | C13—C15—C20—N7 | −12.6 (4) |
C4—C3—C5—C6 | 136.7 (2) | O1—C1—N1—C4 | −174.0 (2) |
C2—C3—C5—C10 | 137.7 (2) | N2—C1—N1—C4 | 6.4 (3) |
C4—C3—C5—C10 | −42.4 (3) | O3—C4—N1—C1 | 176.6 (2) |
C10—C5—C6—C7 | 1.0 (3) | C3—C4—N1—C1 | −3.7 (3) |
C3—C5—C6—C7 | −178.1 (2) | O1—C1—N2—C2 | 176.8 (2) |
C5—C6—C7—C8 | 3.5 (4) | N1—C1—N2—C2 | −3.6 (3) |
C6—C7—C8—C9 | −4.4 (4) | O2—C2—N2—C1 | −178.5 (2) |
C6—C7—C8—N4 | 177.6 (2) | C3—C2—N2—C1 | −1.6 (4) |
C7—C8—C9—C10 | 0.7 (4) | C9—C10—N3—O7 | 136.7 (2) |
N4—C8—C9—C10 | 178.7 (2) | C5—C10—N3—O7 | −36.0 (3) |
C8—C9—C10—C5 | 4.2 (4) | C9—C10—N3—O6 | −40.0 (3) |
C8—C9—C10—N3 | −168.4 (2) | C5—C10—N3—O6 | 147.4 (3) |
C6—C5—C10—C9 | −4.9 (3) | C9—C8—N4—O5 | −171.8 (3) |
C3—C5—C10—C9 | 174.2 (2) | C7—C8—N4—O5 | 6.2 (4) |
C6—C5—C10—N3 | 167.2 (2) | C9—C8—N4—O4 | 8.3 (4) |
C3—C5—C10—N3 | −13.7 (3) | C7—C8—N4—O4 | −173.7 (3) |
O9—C12—C13—C14 | 179.0 (2) | O8—C11—N5—C12 | −179.1 (2) |
N5—C12—C13—C14 | 1.3 (3) | N6—C11—N5—C12 | 0.6 (3) |
O9—C12—C13—C15 | −4.2 (4) | O9—C12—N5—C11 | −179.6 (2) |
N5—C12—C13—C15 | 178.1 (2) | C13—C12—N5—C11 | −1.7 (3) |
C12—C13—C14—O10 | 178.4 (2) | O8—C11—N6—C14 | −179.3 (2) |
C15—C13—C14—O10 | 1.5 (4) | N5—C11—N6—C14 | 1.0 (3) |
C12—C13—C14—N6 | 0.0 (3) | O10—C14—N6—C11 | −179.8 (2) |
C15—C13—C14—N6 | −176.9 (2) | C13—C14—N6—C11 | −1.3 (3) |
C14—C13—C15—C16 | 130.0 (2) | C19—C20—N7—O11 | 144.5 (3) |
C12—C13—C15—C16 | −46.9 (3) | C15—C20—N7—O11 | −32.6 (4) |
C14—C13—C15—C20 | −44.1 (3) | C19—C20—N7—O12 | −33.2 (3) |
C12—C13—C15—C20 | 139.1 (2) | C15—C20—N7—O12 | 149.8 (2) |
C20—C15—C16—C17 | 1.9 (3) | C19—C18—N8—O14 | −175.6 (3) |
C13—C15—C16—C17 | −172.6 (2) | C17—C18—N8—O14 | 5.6 (4) |
C15—C16—C17—C18 | 0.6 (4) | C19—C18—N8—O13 | 4.6 (4) |
C16—C17—C18—C19 | −1.7 (4) | C17—C18—N8—O13 | −174.2 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O9i | 0.80 (2) | 2.09 (2) | 2.888 (2) | 175 (2) |
N2—H2A···O8ii | 0.89 (3) | 2.02 (3) | 2.905 (2) | 173 (2) |
N5—H5A···O3i | 0.84 (2) | 2.10 (2) | 2.931 (2) | 169 (2) |
N6—H6A···O1ii | 0.85 (2) | 2.04 (3) | 2.889 (2) | 177 (2) |
N9—H9A···O10 | 1.04 (3) | 1.62 (4) | 2.650 (2) | 167 (3) |
N10—H10···O2 | 1.02 (4) | 1.63 (4) | 2.644 (3) | 173 (3) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C3H10N+·C10H5N4O7−·0.125H2O |
Mr | 355.29 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 15.0410 (5), 10.5460 (3), 20.4170 (8) |
β (°) | 94.953 (1) |
V (Å3) | 3226.50 (19) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.30 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.960, 0.987 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 26803, 5517, 3780 |
Rint | 0.039 |
(sin θ/λ)max (Å−1) | 0.588 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.130, 1.02 |
No. of reflections | 5517 |
No. of parameters | 516 |
No. of restraints | 36 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.21, −0.21 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SIR92 (Altomare et al., 1993), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O9i | 0.80 (2) | 2.09 (2) | 2.888 (2) | 175 (2) |
N2—H2A···O8ii | 0.89 (3) | 2.02 (3) | 2.905 (2) | 173 (2) |
N5—H5A···O3i | 0.84 (2) | 2.10 (2) | 2.931 (2) | 169 (2) |
N6—H6A···O1ii | 0.85 (2) | 2.04 (3) | 2.889 (2) | 177 (2) |
N9—H9A···O10 | 1.04 (3) | 1.62 (4) | 2.650 (2) | 167 (3) |
N10—H10···O2 | 1.02 (4) | 1.63 (4) | 2.644 (3) | 173 (3) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x+1, −y+1, −z+1. |
Acknowledgements
The authors are thankful to the SAIF, IIT Madras, for the data collection.
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Many different types of anionic sigma complexes such as carbon bonded, nitrogen bonded, oxygen bonded and spiro Meisenheimer complexes have been reported by different group of scientists (Terrier, 1982; Al-Kaysi et al., 2005). Among these, spiro Meisenheimer complexes have notable photophysical and redox properties which have enabled their utility in the field of electro chemistry (Gallardo et al., 2007; Al-Kaysi et al.,2008). In our laboratories, we have synthesized new carbanionic sigma complexes from aromatic nitro compounds (1-Chloro-2,4-dinitrobenzene and 1-chloro-2,4,6-trinitrobenzene) and the ketone [pyrimidine-2,4,6(1H,3H,5H)-trione (barbituric acid)] in the presence of tertiary amines which have noticable anticonvulsant/hypnotic activities (Kalaivani & Malarvizhi, 2009; Kalaivani & Buvaneswari, 2010). In this article, we report another new type of carbanionic sigma complex which is a pyrimidine derivative (barbiturate), isolated from the ethanolic solutions of 1-chloro-2,4-dinitrobenzene, barbituric acid and trimethylamine.
The asymmetric unit of the title compund (Fig. 1) comprises of two cations and two anions. In addition, the asymmetric unit contains a 0.25 occupancy water molecule. The bond lengths and bond angles of the title compound are comparible with those of related barbiturates (Kalaivani & Malarvizhi, 2009; Kalaivani et al., 2012). In one the cations the C atoms C24, C25 and C26 are disordered over two sets of sites with refined occupancies of 0.538 (8) and 0.462 (8). Since there are two nitro groups attached to the benzene rings in the anions a steric effect may operate which is reflected in the dihedral angles between the benzene and pyrimidine rings (42.77 (6) and 46.55 (7)°). The nitro group para with respect to barbiturate ring are approximately planar (8.2 (4) and 6.0 (5)°) with benzene ring and are effectively involved in the delocalisation of electrons. The nitro groups ortho with respect to barbiturate ring form dihedral angles of 40.7 (3) and 33.8 (3)° with the benzene rings. In the crystal, N—H···O hydrogen bonds connect anions and cations into one-dimensional chains along [010]. Within these chains R22(8)ring motifs (Bernstein et al., 1995) are formed by inversion-related barbiturate anions (Fig. 2).