In the crystal structure of the title compound, C
6H
12N
4·C
8H
14O
2, neutral molecules of urotropine and 2,2,3,3-tetramethylcyclopropanecarboxylic acid are linked together by an O—H
N hydrogen bond.
Supporting information
CCDC reference: 613868
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.004 Å
- R factor = 0.081
- wR factor = 0.209
- Data-to-parameter ratio = 14.6
checkCIF/PLATON results
No syntax errors found
Datablock: j27m
Alert level C
ABSMU01_ALERT_1_C The ratio of given/expected absorption coefficient lies
outside the range 0.99 <> 1.01
Calculated value of mu = 0.084
Value of mu given = 0.080
PLAT199_ALERT_1_C Check the Reported _cell_measurement_temperature 293 K
PLAT200_ALERT_1_C Check the Reported _diffrn_ambient_temperature . 293 K
PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for N3
PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd. # 2
C6 H12 N4
0 ALERT level A = In general: serious problem
0 ALERT level B = Potentially serious problem
5 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
1 ALERT type 2 Indicator that the structure model may be wrong or deficient
0 ALERT type 3 Indicator that the structure quality may be low
1 ALERT type 4 Improvement, methodology, query or suggestion
Data collection: SMART (Bruker, 2000); cell refinement: SMART; data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXTL (Bruker, 2000); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Urotropine–2,2,3,3-tetramethylcyclopropanecarboxylic acid (1/1)
top
Crystal data top
C8H14O2·C6H12N4 | F(000) = 1232 |
Mr = 282.39 | Dx = 1.228 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 1501 reflections |
a = 10.2439 (14) Å | θ = 1.5–24.9° |
b = 7.0715 (9) Å | µ = 0.08 mm−1 |
c = 42.491 (6) Å | T = 293 K |
β = 96.881 (2)° | Block, colourless |
V = 3055.9 (7) Å3 | 0.25 × 0.19 × 0.16 mm |
Z = 8 | |
Data collection top
Bruker SMART CCD area-detector diffractometer | 2758 independent reflections |
Radiation source: fine-focus sealed tube | 2320 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
φ and ω scans | θmax = 25.2°, θmin = 1.0° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −12→12 |
Tmin = 0.969, Tmax = 0.980 | k = −7→8 |
7802 measured reflections | l = −50→36 |
Refinement top
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)] = 0.081 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.209 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.24 | w = 1/[σ2(Fo2) + (0.0906P)2 + 2.4269P] where P = (Fo2 + 2Fc2)/3 |
2750 reflections | (Δ/σ)max < 0.001 |
189 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.35 e Å−3 |
Special details top
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
O1 | 0.1412 (2) | 0.1670 (3) | 0.60939 (5) | 0.0527 (6) | |
O2 | 0.2986 (2) | 0.3560 (4) | 0.63050 (5) | 0.0618 (7) | |
C7 | 0.2106 (3) | 0.3221 (4) | 0.60972 (6) | 0.0353 (7) | |
C8 | 0.1781 (3) | 0.4573 (4) | 0.58358 (7) | 0.0361 (7) | |
H8 | 0.2403 | 0.5631 | 0.5848 | 0.043* | |
C9 | 0.0397 (3) | 0.5196 (4) | 0.56981 (6) | 0.0336 (7) | |
C10 | 0.1236 (3) | 0.4133 (4) | 0.54918 (6) | 0.0360 (7) | |
C11 | −0.0788 (3) | 0.4259 (5) | 0.58085 (9) | 0.0561 (9) | |
H11A | −0.1532 | 0.4415 | 0.5651 | 0.084* | |
H11B | −0.0972 | 0.4828 | 0.6003 | 0.084* | |
H11C | −0.0614 | 0.2935 | 0.5842 | 0.084* | |
C12 | 0.0200 (4) | 0.7308 (4) | 0.56555 (9) | 0.0558 (9) | |
H12A | 0.1016 | 0.7885 | 0.5618 | 0.084* | |
H12B | −0.0090 | 0.7835 | 0.5843 | 0.084* | |
H12C | −0.0450 | 0.7541 | 0.5478 | 0.084* | |
C13 | 0.0878 (4) | 0.2129 (5) | 0.53929 (8) | 0.0571 (9) | |
H13A | 0.0481 | 0.1511 | 0.5559 | 0.086* | |
H13B | 0.1657 | 0.1457 | 0.5354 | 0.086* | |
H13C | 0.0268 | 0.2147 | 0.5203 | 0.086* | |
C14 | 0.1879 (3) | 0.5175 (6) | 0.52405 (8) | 0.0608 (10) | |
H14A | 0.1274 | 0.5260 | 0.5050 | 0.091* | |
H14B | 0.2652 | 0.4503 | 0.5197 | 0.091* | |
H14C | 0.2120 | 0.6424 | 0.5315 | 0.091* | |
N1 | 0.2281 (3) | −0.0091 (4) | 0.71859 (6) | 0.0501 (7) | |
N2 | 0.3509 (3) | −0.2502 (4) | 0.69463 (6) | 0.0509 (7) | |
N3 | 0.2052 (2) | −0.0428 (3) | 0.66119 (5) | 0.0387 (6) | |
N4 | 0.1149 (3) | −0.2815 (4) | 0.69377 (7) | 0.0577 (8) | |
C1 | 0.3499 (3) | −0.1150 (5) | 0.72028 (8) | 0.0554 (9) | |
H1A | 0.3634 | −0.1818 | 0.7403 | 0.066* | |
H1B | 0.4224 | −0.0275 | 0.7197 | 0.066* | |
C2 | 0.2090 (4) | 0.0889 (4) | 0.68828 (8) | 0.0523 (9) | |
H2A | 0.2800 | 0.1786 | 0.6873 | 0.063* | |
H2B | 0.1272 | 0.1593 | 0.6867 | 0.063* | |
C3 | 0.1210 (3) | −0.1453 (6) | 0.71943 (8) | 0.0604 (10) | |
H3A | 0.1329 | −0.2121 | 0.7395 | 0.072* | |
H3B | 0.0382 | −0.0776 | 0.7181 | 0.072* | |
C4 | 0.3294 (3) | −0.1491 (5) | 0.66455 (7) | 0.0491 (8) | |
H4A | 0.3282 | −0.2389 | 0.6473 | 0.059* | |
H4B | 0.4017 | −0.0622 | 0.6631 | 0.059* | |
C5 | 0.2410 (4) | −0.3792 (4) | 0.69601 (8) | 0.0581 (10) | |
H5A | 0.2540 | −0.4490 | 0.7158 | 0.070* | |
H5B | 0.2392 | −0.4696 | 0.6788 | 0.070* | |
C6 | 0.0980 (4) | −0.1793 (6) | 0.66368 (8) | 0.0618 (10) | |
H6A | 0.0148 | −0.1123 | 0.6617 | 0.074* | |
H6B | 0.0953 | −0.2692 | 0.6464 | 0.074* | |
H1 | 0.171 (4) | 0.098 (6) | 0.6271 (10) | 0.079 (12)* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.0663 (15) | 0.0438 (13) | 0.0437 (13) | −0.0074 (11) | −0.0117 (11) | 0.0179 (10) |
O2 | 0.0579 (14) | 0.0729 (17) | 0.0492 (14) | −0.0086 (12) | −0.0164 (11) | 0.0083 (12) |
C7 | 0.0334 (14) | 0.0397 (16) | 0.0327 (15) | 0.0060 (12) | 0.0037 (12) | −0.0007 (12) |
C8 | 0.0338 (14) | 0.0317 (15) | 0.0422 (17) | −0.0025 (11) | 0.0024 (12) | 0.0047 (12) |
C9 | 0.0377 (15) | 0.0291 (14) | 0.0336 (15) | 0.0035 (11) | 0.0029 (11) | 0.0057 (11) |
C10 | 0.0387 (15) | 0.0377 (15) | 0.0314 (15) | 0.0061 (12) | 0.0032 (11) | 0.0080 (12) |
C11 | 0.0390 (17) | 0.062 (2) | 0.069 (2) | 0.0076 (16) | 0.0156 (16) | 0.0176 (18) |
C12 | 0.070 (2) | 0.0352 (17) | 0.062 (2) | 0.0131 (16) | 0.0071 (18) | 0.0071 (15) |
C13 | 0.082 (3) | 0.0454 (19) | 0.0405 (18) | 0.0140 (17) | −0.0048 (16) | −0.0054 (15) |
C14 | 0.057 (2) | 0.080 (3) | 0.048 (2) | 0.0117 (19) | 0.0173 (16) | 0.0190 (19) |
N1 | 0.0759 (19) | 0.0412 (15) | 0.0337 (14) | 0.0028 (14) | 0.0095 (13) | −0.0037 (12) |
N2 | 0.0510 (16) | 0.0551 (17) | 0.0478 (16) | 0.0200 (13) | 0.0115 (12) | 0.0138 (13) |
N3 | 0.0499 (14) | 0.0350 (13) | 0.0304 (13) | −0.0002 (11) | 0.0013 (10) | 0.0077 (10) |
N4 | 0.0566 (17) | 0.0657 (19) | 0.0495 (17) | −0.0274 (15) | 0.0015 (13) | 0.0138 (15) |
C1 | 0.0508 (19) | 0.073 (2) | 0.0380 (18) | −0.0107 (17) | −0.0117 (14) | 0.0081 (17) |
C2 | 0.075 (2) | 0.0349 (16) | 0.0478 (19) | 0.0097 (16) | 0.0084 (16) | 0.0010 (14) |
C3 | 0.056 (2) | 0.080 (3) | 0.050 (2) | 0.0144 (19) | 0.0250 (17) | 0.0181 (19) |
C4 | 0.0566 (19) | 0.054 (2) | 0.0404 (18) | 0.0081 (15) | 0.0202 (15) | 0.0081 (14) |
C5 | 0.104 (3) | 0.0302 (16) | 0.0398 (19) | 0.0033 (18) | 0.0086 (18) | 0.0089 (14) |
C6 | 0.057 (2) | 0.076 (2) | 0.048 (2) | −0.0185 (18) | −0.0135 (16) | 0.0109 (18) |
Geometric parameters (Å, º) top
O1—C7 | 1.307 (4) | N1—C1 | 1.450 (4) |
O1—H1 | 0.92 (4) | N1—C2 | 1.455 (4) |
O2—C7 | 1.208 (3) | N1—C3 | 1.463 (5) |
C7—C8 | 1.473 (4) | N2—C1 | 1.451 (4) |
C8—C9 | 1.533 (4) | N2—C5 | 1.455 (4) |
C8—C10 | 1.533 (4) | N2—C4 | 1.458 (4) |
C8—H8 | 0.9800 | N3—C4 | 1.469 (4) |
C9—C10 | 1.501 (4) | N3—C6 | 1.475 (4) |
C9—C11 | 1.506 (4) | N3—C2 | 1.478 (4) |
C9—C12 | 1.515 (4) | N4—C3 | 1.451 (5) |
C10—C13 | 1.511 (4) | N4—C5 | 1.458 (5) |
C10—C14 | 1.512 (4) | N4—C6 | 1.461 (4) |
C11—H11A | 0.9600 | C1—H1A | 0.9700 |
C11—H11B | 0.9600 | C1—H1B | 0.9700 |
C11—H11C | 0.9600 | C2—H2A | 0.9700 |
C12—H12A | 0.9600 | C2—H2B | 0.9700 |
C12—H12B | 0.9600 | C3—H3A | 0.9700 |
C12—H12C | 0.9600 | C3—H3B | 0.9700 |
C13—H13A | 0.9600 | C4—H4A | 0.9700 |
C13—H13B | 0.9600 | C4—H4B | 0.9700 |
C13—H13C | 0.9600 | C5—H5A | 0.9700 |
C14—H14A | 0.9600 | C5—H5B | 0.9700 |
C14—H14B | 0.9600 | C6—H6A | 0.9700 |
C14—H14C | 0.9600 | C6—H6B | 0.9700 |
| | | |
C7—O1—H1 | 108 (3) | C1—N1—C3 | 107.6 (3) |
O2—C7—O1 | 122.2 (3) | C2—N1—C3 | 108.3 (3) |
O2—C7—C8 | 120.3 (3) | C1—N2—C5 | 107.9 (2) |
O1—C7—C8 | 117.6 (2) | C1—N2—C4 | 108.7 (3) |
C7—C8—C9 | 126.1 (2) | C5—N2—C4 | 107.8 (3) |
C7—C8—C10 | 127.7 (2) | C4—N3—C6 | 107.6 (3) |
C9—C8—C10 | 58.62 (17) | C4—N3—C2 | 107.8 (2) |
C7—C8—H8 | 111.6 | C6—N3—C2 | 107.9 (3) |
C9—C8—H8 | 111.6 | C3—N4—C5 | 107.9 (3) |
C10—C8—H8 | 111.6 | C3—N4—C6 | 108.6 (3) |
C10—C9—C11 | 120.1 (3) | C5—N4—C6 | 107.6 (3) |
C10—C9—C12 | 120.1 (2) | N1—C1—N2 | 112.8 (2) |
C11—C9—C12 | 111.8 (3) | N1—C1—H1A | 109.0 |
C10—C9—C8 | 60.71 (18) | N2—C1—H1A | 109.0 |
C11—C9—C8 | 119.8 (2) | N1—C1—H1B | 109.0 |
C12—C9—C8 | 115.6 (2) | N2—C1—H1B | 109.0 |
C9—C10—C13 | 119.7 (3) | H1A—C1—H1B | 107.8 |
C9—C10—C14 | 119.8 (3) | N1—C2—N3 | 112.2 (2) |
C13—C10—C14 | 111.9 (3) | N1—C2—H2A | 109.2 |
C9—C10—C8 | 60.67 (17) | N3—C2—H2A | 109.2 |
C13—C10—C8 | 120.3 (2) | N1—C2—H2B | 109.2 |
C14—C10—C8 | 115.8 (3) | N3—C2—H2B | 109.2 |
C9—C11—H11A | 109.5 | H2A—C2—H2B | 107.9 |
C9—C11—H11B | 109.5 | N4—C3—N1 | 112.6 (2) |
H11A—C11—H11B | 109.5 | N4—C3—H3A | 109.1 |
C9—C11—H11C | 109.5 | N1—C3—H3A | 109.1 |
H11A—C11—H11C | 109.5 | N4—C3—H3B | 109.1 |
H11B—C11—H11C | 109.5 | N1—C3—H3B | 109.1 |
C9—C12—H12A | 109.5 | H3A—C3—H3B | 107.8 |
C9—C12—H12B | 109.5 | N2—C4—N3 | 112.0 (2) |
H12A—C12—H12B | 109.5 | N2—C4—H4A | 109.2 |
C9—C12—H12C | 109.5 | N3—C4—H4A | 109.2 |
H12A—C12—H12C | 109.5 | N2—C4—H4B | 109.2 |
H12B—C12—H12C | 109.5 | N3—C4—H4B | 109.2 |
C10—C13—H13A | 109.5 | H4A—C4—H4B | 107.9 |
C10—C13—H13B | 109.5 | N2—C5—N4 | 112.6 (2) |
H13A—C13—H13B | 109.5 | N2—C5—H5A | 109.1 |
C10—C13—H13C | 109.5 | N4—C5—H5A | 109.1 |
H13A—C13—H13C | 109.5 | N2—C5—H5B | 109.1 |
H13B—C13—H13C | 109.5 | N4—C5—H5B | 109.1 |
C10—C14—H14A | 109.5 | H5A—C5—H5B | 107.8 |
C10—C14—H14B | 109.5 | N4—C6—N3 | 112.1 (3) |
H14A—C14—H14B | 109.5 | N4—C6—H6A | 109.2 |
C10—C14—H14C | 109.5 | N3—C6—H6A | 109.2 |
H14A—C14—H14C | 109.5 | N4—C6—H6B | 109.2 |
H14B—C14—H14C | 109.5 | N3—C6—H6B | 109.2 |
C1—N1—C2 | 108.3 (2) | H6A—C6—H6B | 107.9 |
| | | |
O2—C7—C8—C9 | −135.8 (3) | C3—N1—C1—N2 | 58.5 (3) |
O1—C7—C8—C9 | 44.1 (4) | C5—N2—C1—N1 | −58.5 (3) |
O2—C7—C8—C10 | 148.7 (3) | C4—N2—C1—N1 | 58.2 (3) |
O1—C7—C8—C10 | −31.3 (4) | C1—N1—C2—N3 | 58.2 (4) |
C7—C8—C9—C10 | −116.2 (3) | C3—N1—C2—N3 | −58.1 (3) |
C7—C8—C9—C11 | −6.3 (4) | C4—N3—C2—N1 | −58.0 (3) |
C10—C8—C9—C11 | 109.9 (3) | C6—N3—C2—N1 | 57.9 (3) |
C7—C8—C9—C12 | 132.3 (3) | C5—N4—C3—N1 | 58.0 (3) |
C10—C8—C9—C12 | −111.6 (3) | C6—N4—C3—N1 | −58.3 (4) |
C11—C9—C10—C13 | 0.6 (4) | C1—N1—C3—N4 | −58.3 (3) |
C12—C9—C10—C13 | −145.4 (3) | C2—N1—C3—N4 | 58.5 (3) |
C8—C9—C10—C13 | 110.2 (3) | C1—N2—C4—N3 | −57.8 (4) |
C11—C9—C10—C14 | 145.8 (3) | C5—N2—C4—N3 | 59.0 (3) |
C12—C9—C10—C14 | −0.2 (4) | C6—N3—C4—N2 | −58.6 (3) |
C8—C9—C10—C14 | −104.6 (3) | C2—N3—C4—N2 | 57.5 (3) |
C11—C9—C10—C8 | −109.6 (3) | C1—N2—C5—N4 | 57.9 (3) |
C12—C9—C10—C8 | 104.4 (3) | C4—N2—C5—N4 | −59.4 (3) |
C7—C8—C10—C9 | 113.7 (3) | C3—N4—C5—N2 | −57.8 (3) |
C7—C8—C10—C13 | 4.4 (4) | C6—N4—C5—N2 | 59.2 (3) |
C9—C8—C10—C13 | −109.3 (3) | C3—N4—C6—N3 | 58.0 (4) |
C7—C8—C10—C14 | −135.1 (3) | C5—N4—C6—N3 | −58.6 (4) |
C9—C8—C10—C14 | 111.2 (3) | C4—N3—C6—N4 | 58.5 (4) |
C2—N1—C1—N2 | −58.3 (3) | C2—N3—C6—N4 | −57.5 (4) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N3 | 0.92 (4) | 1.76 (4) | 2.670 (3) | 172 (3) |
C5—H5B···O2i | 0.97 | 2.53 | 3.464 (4) | 162 |
C6—H6A···O2ii | 0.97 | 2.45 | 3.228 (4) | 137 |
Symmetry codes: (i) x, y−1, z; (ii) x−1/2, y−1/2, z. |