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In the title compound, C6H9N3·2C9H8O2, an amino­pyrimidine–cinnamic acid 1:2 cocrystal, the 2-amino-4,6-dimethyl­pyrimidine mol­ecule forms two eight-membered hydrogen-bonded rings [R22(8) motif] with the carboxylic acid groups from two independent cinnamic acid mol­ecules via N—H...O and O—H...N hydrogen bonds. The cinnamic acid mol­ecules are linked by C—H...O hydrogen bonds to form chains along two axes.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S160053680503730X/su6236sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S160053680503730X/su6236Isup2.hkl
Contains datablock I

CCDC reference: 294003

Key indicators

  • Single-crystal X-ray study
  • T = 293 K
  • Mean [sigma](C-C) = 0.004 Å
  • R factor = 0.048
  • wR factor = 0.158
  • Data-to-parameter ratio = 13.0

checkCIF/PLATON results

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Alert level B PLAT027_ALERT_3_B _diffrn_reflns_theta_full (too) Low ............ 24.96 Deg.
Alert level C PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ .... ? PLAT199_ALERT_1_C Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_C Check the Reported _diffrn_ambient_temperature . 293 K PLAT230_ALERT_2_C Hirshfeld Test Diff for O2A - C9A .. 5.13 su PLAT230_ALERT_2_C Hirshfeld Test Diff for C11A - C12A .. 5.12 su PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C9A
0 ALERT level A = In general: serious problem 1 ALERT level B = Potentially serious problem 6 ALERT level C = Check and explain 0 ALERT level G = General alerts; check 3 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 3 ALERT type 2 Indicator that the structure model may be wrong or deficient 1 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion

Computing details top

Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1994); cell refinement: CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: PLATON.

2-amino-4,6-dimethylpyrimidine–cinnamic acid (1/2) top
Crystal data top
C6H9N3·2C9H8O2F(000) = 1776
Mr = 419.47Dx = 1.241 Mg m3
Orthorhombic, PbcnMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2n 2abCell parameters from 25 reflections
a = 32.045 (2) Åθ = 10.3–13.1°
b = 8.7676 (7) ŵ = 0.09 mm1
c = 15.9796 (10) ÅT = 293 K
V = 4489.6 (5) Å3Plate-like, colourless
Z = 80.3 × 0.2 × 0.15 mm
Data collection top
Enraf–Nonius MACH3 single-crystal
diffractometer
2330 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.071
Graphite monochromatorθmax = 25.0°, θmin = 2.4°
w/–2q scansh = 381
Absorption correction: ψ scan
(North et al., 1968)
k = 110
Tmin = 0.970, Tmax = 0.982l = 181
5035 measured reflections1 standard reflections every 100 reflections
3956 independent reflections intensity decay: none
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.048Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.158Only H-atom displacement parameters refined
S = 1.03 w = 1/[σ2(Fo2) + (0.0666P)2 + 1.8369P]
where P = (Fo2 + 2Fc2)/3
3956 reflections(Δ/σ)max < 0.001
305 parametersΔρmax = 0.21 e Å3
0 restraintsΔρmin = 0.18 e Å3
Special details top

Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All e.s.d.'s are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O1A0.29314 (6)0.0599 (3)0.91278 (14)0.0854 (9)
O2A0.26373 (6)0.1248 (2)0.98775 (14)0.0826 (9)
C9A0.26274 (9)0.0114 (3)0.93292 (18)0.0632 (10)
C10A0.22084 (9)0.0241 (4)0.89966 (19)0.0709 (11)
C11A0.18873 (9)0.0640 (4)0.90727 (18)0.0670 (11)
C12A0.14599 (8)0.0365 (3)0.87587 (16)0.0579 (9)
C13A0.13321 (9)0.0987 (3)0.83850 (17)0.0612 (10)
C14A0.09225 (10)0.1205 (3)0.81564 (17)0.0660 (10)
C15A0.06323 (9)0.0080 (4)0.82866 (18)0.0715 (11)
C16A0.07531 (10)0.1282 (4)0.8638 (2)0.0780 (12)
C17A0.11600 (10)0.1487 (3)0.88693 (19)0.0721 (11)
O3B0.48796 (6)0.1782 (2)0.95336 (13)0.0743 (8)
O4B0.45870 (6)0.0107 (3)0.86683 (13)0.0765 (8)
C9B0.48915 (9)0.0774 (3)0.89241 (17)0.0592 (10)
C10B0.53097 (8)0.0539 (3)0.85695 (17)0.0620 (10)
C11B0.56552 (8)0.1167 (3)0.88526 (16)0.0567 (9)
C12B0.60783 (8)0.0963 (3)0.85351 (16)0.0562 (9)
C13B0.64021 (9)0.1824 (4)0.88731 (19)0.0699 (11)
C14B0.68048 (9)0.1663 (4)0.8588 (2)0.0803 (11)
C15B0.68925 (9)0.0644 (4)0.7963 (2)0.0784 (13)
C16B0.65787 (9)0.0222 (4)0.76268 (17)0.0714 (11)
C17B0.61764 (8)0.0077 (3)0.79054 (16)0.0623 (9)
N10.41366 (6)0.2414 (2)1.02048 (12)0.0520 (7)
N20.37618 (7)0.0663 (2)0.94518 (13)0.0585 (8)
N30.33999 (6)0.2168 (2)1.03765 (12)0.0517 (7)
C20.37651 (7)0.1771 (3)1.00226 (14)0.0478 (8)
C40.34103 (8)0.3260 (3)1.09614 (16)0.0569 (9)
C50.37788 (8)0.3948 (3)1.11807 (18)0.0641 (10)
C60.41415 (8)0.3518 (3)1.07830 (17)0.0605 (9)
C70.30020 (9)0.3665 (4)1.1365 (2)0.0768 (11)
C80.45543 (10)0.4235 (5)1.0967 (2)0.0903 (16)
H2A0.288000.143101.000500.108 (14)*
H10A0.217400.116000.871400.103 (12)*
H11A0.193000.155300.935700.115 (13)*
H13A0.152600.175600.828900.084 (10)*
H14A0.084200.212200.791100.073 (8)*
H15A0.035500.023800.813800.086 (10)*
H16A0.055900.205900.871700.087 (10)*
H17A0.123800.241000.911000.082 (10)*
H3B0.463800.187900.969700.094 (12)*
H10B0.533200.010300.810900.067 (8)*
H11B0.562600.181600.930900.079 (9)*
H13B0.634500.251900.929900.097 (11)*
H14B0.701800.224800.882000.090 (11)*
H15B0.716500.054000.776800.092 (10)*
H16B0.664000.091700.720400.083 (10)*
H17B0.596700.067700.767200.073 (9)*
H10.353100.022500.932000.078 (10)*
H20.399100.038600.921500.074 (9)*
H50.378400.469601.159300.088 (10)*
H7A0.282800.418401.096700.128 (15)*
H7B0.305200.432001.183600.130 (15)*
H7C0.286400.275301.155100.160 (19)*
H8A0.474900.346201.113600.16 (2)*
H8B0.452300.496501.141100.122 (13)*
H8C0.465700.474001.047500.17 (2)*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O1A0.0612 (13)0.0891 (16)0.1058 (17)0.0091 (12)0.0125 (12)0.0189 (13)
O2A0.0547 (14)0.0877 (16)0.1054 (17)0.0039 (11)0.0059 (11)0.0159 (14)
C9A0.0615 (18)0.0610 (17)0.0671 (17)0.0074 (15)0.0011 (14)0.0044 (16)
C10A0.0655 (18)0.071 (2)0.0763 (19)0.0096 (17)0.0056 (14)0.0002 (17)
C11A0.0674 (19)0.0618 (18)0.0717 (19)0.0009 (15)0.0039 (14)0.0054 (16)
C12A0.0600 (16)0.0565 (16)0.0572 (16)0.0050 (13)0.0017 (12)0.0065 (14)
C13A0.0620 (18)0.0590 (17)0.0627 (17)0.0019 (14)0.0082 (13)0.0052 (14)
C14A0.076 (2)0.0614 (17)0.0606 (17)0.0125 (16)0.0039 (14)0.0064 (14)
C15A0.0613 (18)0.085 (2)0.0682 (18)0.0016 (18)0.0025 (14)0.0028 (17)
C16A0.065 (2)0.074 (2)0.095 (2)0.0157 (17)0.0057 (17)0.0092 (19)
C17A0.075 (2)0.0582 (18)0.083 (2)0.0006 (15)0.0060 (16)0.0094 (16)
O3B0.0534 (13)0.0873 (14)0.0823 (14)0.0015 (10)0.0051 (10)0.0251 (12)
O4B0.0568 (12)0.0919 (15)0.0809 (13)0.0018 (12)0.0001 (10)0.0221 (12)
C9B0.0575 (18)0.0628 (17)0.0573 (16)0.0062 (14)0.0023 (13)0.0002 (14)
C10B0.0572 (17)0.0710 (18)0.0579 (16)0.0049 (14)0.0033 (12)0.0066 (15)
C11B0.0536 (16)0.0634 (16)0.0532 (15)0.0067 (13)0.0007 (12)0.0015 (14)
C12B0.0549 (15)0.0639 (16)0.0498 (14)0.0090 (13)0.0025 (12)0.0099 (13)
C13B0.0651 (19)0.077 (2)0.0676 (18)0.0029 (16)0.0034 (14)0.0038 (17)
C14B0.0530 (18)0.095 (2)0.093 (2)0.0063 (17)0.0009 (17)0.001 (2)
C15B0.0491 (17)0.107 (3)0.079 (2)0.0078 (18)0.0058 (15)0.012 (2)
C16B0.0674 (19)0.091 (2)0.0559 (17)0.0161 (18)0.0041 (14)0.0034 (17)
C17B0.0575 (16)0.0754 (18)0.0540 (15)0.0070 (16)0.0041 (13)0.0037 (15)
N10.0473 (12)0.0567 (12)0.0519 (12)0.0005 (10)0.0023 (9)0.0037 (11)
N20.0508 (13)0.0620 (13)0.0628 (13)0.0043 (11)0.0052 (11)0.0104 (12)
N30.0460 (12)0.0577 (12)0.0514 (11)0.0036 (10)0.0003 (9)0.0016 (11)
C20.0501 (15)0.0478 (13)0.0456 (13)0.0029 (12)0.0007 (11)0.0042 (12)
C40.0526 (16)0.0639 (16)0.0541 (15)0.0080 (13)0.0019 (12)0.0001 (14)
C50.0599 (18)0.0683 (18)0.0641 (17)0.0014 (15)0.0010 (13)0.0171 (15)
C60.0545 (16)0.0681 (17)0.0589 (16)0.0031 (14)0.0000 (13)0.0073 (14)
C70.0584 (18)0.095 (2)0.077 (2)0.0182 (18)0.0076 (16)0.017 (2)
C80.063 (2)0.108 (3)0.100 (3)0.018 (2)0.0004 (18)0.043 (2)
Geometric parameters (Å, º) top
O1A—C9A1.201 (4)C17A—H17A0.9302
O2A—C9A1.326 (3)C9B—C10B1.470 (4)
O2A—H2A0.8198C10B—C11B1.317 (4)
O3B—C9B1.316 (3)C11B—C12B1.459 (4)
O4B—C9B1.209 (4)C12B—C17B1.394 (4)
O3B—H3B0.8215C12B—C13B1.392 (4)
N1—C61.338 (3)C13B—C14B1.376 (4)
N1—C21.349 (3)C14B—C15B1.369 (5)
N2—C21.333 (3)C15B—C16B1.370 (4)
N3—C21.346 (3)C16B—C17B1.370 (4)
N3—C41.338 (3)C10B—H10B0.9292
N2—H10.8596C11B—H11B0.9297
N2—H20.8612C13B—H13B0.9316
C9A—C10A1.477 (4)C14B—H14B0.9313
C10A—C11A1.292 (4)C15B—H15B0.9316
C11A—C12A1.478 (4)C16B—H16B0.9308
C12A—C17A1.387 (4)C17B—H17B0.9306
C12A—C13A1.389 (4)C4—C51.372 (4)
C13A—C14A1.376 (4)C4—C71.501 (4)
C14A—C15A1.371 (4)C5—C61.377 (4)
C15A—C16A1.375 (5)C6—C81.494 (4)
C16A—C17A1.367 (5)C5—H50.9298
C10A—H10A0.9302C7—H7A0.9604
C11A—H11A0.9305C7—H7B0.9602
C13A—H13A0.9296C7—H7C0.9609
C14A—H14A0.9310C8—H8A0.9600
C15A—H15A0.9302C8—H8B0.9608
C16A—H16A0.9311C8—H8C0.9604
O1A···N22.928 (3)C14A···H5viii2.9793
O1A···C11Ai3.349 (4)C15A···H8Bviii3.0398
O1A···C16Bii3.230 (4)C17B···H10B2.7255
O2A···N32.694 (3)C17B···H14Avii3.0923
O2A···C73.392 (4)H1···H17Ai2.5985
O3B···N12.670 (3)H1···C9A2.8973
O3B···C9Biii3.411 (3)H1···H2A2.5823
O3B···C83.310 (4)H1···O1A2.0756
O4B···N22.966 (3)H2···O4B2.1144
O1A···H11Ai2.5625H2···H3B2.5701
O1A···H16Bii2.5482H2···C9B2.9426
O1A···H12.0756H2A···C42.7919
O2A···H11A2.4291H2A···N31.8830
O3B···H11B2.4188H2A···H12.5823
O4B···H22.1144H2A···C72.9516
O4B···H10Bii2.8578H2A···C22.8521
O4B···H17Bii2.8655H3B···C22.8468
O4B···H16Ai2.7141H3B···C82.9081
N1···O3B2.670 (3)H3B···H22.5701
N2···O1A2.928 (3)H3B···C62.7583
N2···O4B2.966 (3)H3B···N11.8601
N2···C13Aiv3.409 (3)H5···H8B2.3975
N3···O2A2.694 (3)H5···C14Aix2.9793
N1···H3B1.8601H5···H7B2.4004
N2···H17Ai2.9039H7B···H52.4004
N3···H2A1.8830H8B···C15Aix3.0398
C2···C13Aiv3.288 (4)H8B···H52.3975
C2···C12Biii3.363 (4)H10A···C13A2.7528
C4···C16Biii3.491 (4)H10A···H13A2.2464
C4···C17Biii3.581 (4)H10B···H17B2.2094
C7···O2A3.392 (4)H10B···O4Bii2.8578
C8···O3B3.310 (4)H10B···C17B2.7255
C9B···O3Biii3.411 (3)H11A···H17A2.3744
C11A···O1Aiv3.349 (4)H11A···O2A2.4291
C12B···C2iii3.363 (4)H11A···O1Aiv2.5625
C13A···N2i3.409 (3)H11B···O3B2.4188
C13A···C2i3.288 (4)H11B···H13B2.3851
C16B···C4iii3.491 (4)H13A···C10A2.7973
C16B···O1Aii3.230 (4)H13A···H10A2.2464
C17B···C4iii3.581 (4)H13B···H11B2.3851
C2···H2A2.8521H13B···H17Avi2.5661
C2···H3B2.8468H14A···C12Bx2.9550
C4···H2A2.7919H14A···C17Bx3.0923
C6···H3B2.7583H15A···C8v3.0663
C7···H2A2.9516H15B···C7vi3.0983
C7···H15Bv3.0983H16A···O4Biv2.7141
C8···H3B2.9081H16B···O1Aii2.5482
C8···H15Avi3.0663H17A···H11A2.3744
C9A···H12.8973H17A···N2iv2.9039
C9B···H22.9426H17A···H1iv2.5985
C10A···H13A2.7973H17A···H13Bv2.5661
C10B···H17B2.7623H17B···H10B2.2094
C12B···H14Avii2.9550H17B···O4Bii2.8655
C13A···H10A2.7528H17B···C10B2.7623
C9A—O2A—H2A109.50C13B—C14B—C15B120.1 (3)
C9B—O3B—H3B109.40C14B—C15B—C16B119.8 (3)
C2—N1—C6117.5 (2)C15B—C16B—C17B120.8 (3)
C2—N3—C4117.2 (2)C12B—C17B—C16B120.5 (3)
C2—N2—H2119.97C9B—C10B—H10B117.41
C2—N2—H1120.02C11B—C10B—H10B117.43
H1—N2—H2120.01C12B—C11B—H11B116.20
O1A—C9A—C10A122.1 (3)C10B—C11B—H11B116.16
O2A—C9A—C10A114.7 (2)C14B—C13B—H13B119.55
O1A—C9A—O2A123.2 (3)C12B—C13B—H13B119.45
C9A—C10A—C11A124.3 (3)C13B—C14B—H14B119.99
C10A—C11A—C12A127.5 (3)C15B—C14B—H14B119.95
C13A—C12A—C17A117.1 (2)C16B—C15B—H15B120.18
C11A—C12A—C17A118.9 (3)C14B—C15B—H15B120.02
C11A—C12A—C13A123.9 (3)C15B—C16B—H16B119.51
C12A—C13A—C14A120.9 (3)C17B—C16B—H16B119.69
C13A—C14A—C15A120.4 (3)C12B—C17B—H17B119.77
C14A—C15A—C16A119.7 (3)C16B—C17B—H17B119.73
C15A—C16A—C17A119.5 (3)N1—C2—N2117.3 (2)
C12A—C17A—C16A122.2 (3)N1—C2—N3124.7 (2)
C9A—C10A—H10A117.70N2—C2—N3118.0 (2)
C11A—C10A—H10A117.97C5—C4—C7122.4 (2)
C12A—C11A—H11A116.25N3—C4—C5121.0 (2)
C10A—C11A—H11A116.30N3—C4—C7116.6 (2)
C12A—C13A—H13A119.53C4—C5—C6119.2 (3)
C14A—C13A—H13A119.54N1—C6—C5120.4 (2)
C15A—C14A—H14A119.81N1—C6—C8116.8 (2)
C13A—C14A—H14A119.75C5—C6—C8122.8 (3)
C16A—C15A—H15A120.16C4—C5—H5120.45
C14A—C15A—H15A120.13C6—C5—H5120.33
C15A—C16A—H16A120.18C4—C7—H7A109.48
C17A—C16A—H16A120.28C4—C7—H7B109.44
C12A—C17A—H17A118.93C4—C7—H7C109.70
C16A—C17A—H17A118.84H7A—C7—H7B109.42
O3B—C9B—O4B123.5 (3)H7A—C7—H7C109.38
O3B—C9B—C10B114.0 (2)H7B—C7—H7C109.39
O4B—C9B—C10B122.5 (3)C6—C8—H8A109.50
C9B—C10B—C11B125.2 (2)C6—C8—H8B109.47
C10B—C11B—C12B127.6 (2)C6—C8—H8C109.65
C11B—C12B—C13B119.4 (2)H8A—C8—H8B109.29
C13B—C12B—C17B117.8 (2)H8A—C8—H8C109.45
C11B—C12B—C17B122.7 (2)H8B—C8—H8C109.46
C12B—C13B—C14B121.0 (3)
C2—N1—C6—C51.1 (4)C14A—C15A—C16A—C17A1.3 (5)
C2—N1—C6—C8179.0 (2)C15A—C16A—C17A—C12A0.3 (5)
C6—N1—C2—N30.5 (4)O3B—C9B—C10B—C11B4.8 (4)
C6—N1—C2—N2179.4 (2)O4B—C9B—C10B—C11B176.0 (3)
C2—N3—C4—C7178.6 (2)C9B—C10B—C11B—C12B179.1 (3)
C2—N3—C4—C50.6 (4)C10B—C11B—C12B—C17B5.9 (4)
C4—N3—C2—N11.3 (3)C10B—C11B—C12B—C13B174.7 (3)
C4—N3—C2—N2178.6 (2)C11B—C12B—C17B—C16B179.8 (3)
O2A—C9A—C10A—C11A14.4 (4)C11B—C12B—C13B—C14B179.9 (3)
O1A—C9A—C10A—C11A167.2 (3)C17B—C12B—C13B—C14B0.7 (4)
C9A—C10A—C11A—C12A180.0 (3)C13B—C12B—C17B—C16B0.8 (4)
C10A—C11A—C12A—C17A177.0 (3)C12B—C13B—C14B—C15B0.0 (5)
C10A—C11A—C12A—C13A5.8 (5)C13B—C14B—C15B—C16B0.5 (5)
C17A—C12A—C13A—C14A1.6 (4)C14B—C15B—C16B—C17B0.3 (5)
C11A—C12A—C13A—C14A175.7 (3)C15B—C16B—C17B—C12B0.3 (4)
C11A—C12A—C17A—C16A176.3 (3)N3—C4—C5—C60.9 (4)
C13A—C12A—C17A—C16A1.1 (4)C7—C4—C5—C6180.0 (3)
C12A—C13A—C14A—C15A0.6 (4)C4—C5—C6—C8178.4 (3)
C13A—C14A—C15A—C16A0.9 (4)C4—C5—C6—N11.7 (4)
Symmetry codes: (i) x+1/2, y1/2, z; (ii) x+1, y, z+3/2; (iii) x+1, y, z+2; (iv) x+1/2, y+1/2, z; (v) x1/2, y+1/2, z+2; (vi) x+1/2, y+1/2, z+2; (vii) x+1/2, y+1/2, z+3/2; (viii) x+1/2, y+1/2, z1/2; (ix) x+1/2, y+1/2, z+1/2; (x) x1/2, y1/2, z+3/2.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N2—H1···O1A0.862.082.928 (3)171
N2—H2···O4B0.862.112.966 (3)170
O2A—H2A···N30.821.882.694 (3)170
O3B—H3B···N10.821.862.670 (3)168
C11A—H11A···O1Aiv0.932.563.349 (4)143
C16B—H16B···O1Aii0.932.553.230 (4)130
Symmetry codes: (ii) x+1, y, z+3/2; (iv) x+1/2, y+1/2, z.
 

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