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The title cocrystal, C
5H
5N·C
7H
6O
3, consists of pyridine and 4-hydroxybenzoic acid molecules which are linked by O—H
N and O—H
O hydrogen bonds, leading to zigzag chains along the
b axis.
Supporting information
CCDC reference: 624949
Key indicators
- Single-crystal X-ray study
- T = 298 K
- Mean (C-C) = 0.003 Å
- R factor = 0.056
- wR factor = 0.167
- Data-to-parameter ratio = 13.8
checkCIF/PLATON results
No syntax errors found
Alert level B
RINTA01_ALERT_3_B The value of Rint is greater than 0.15
Rint given 0.174
| Author Response: The crystal is not stable under the room temperature
and is easy to effloresce.
|
PLAT020_ALERT_3_B The value of Rint is greater than 0.10 ......... 0.17
| Author Response: The crystal is not stable under the room temperature
and is easy to effloresce.
|
Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ .... ?
PLAT720_ALERT_4_C Number of Unusual/Non-Standard Label(s) ........ 2
0 ALERT level A = In general: serious problem
2 ALERT level B = Potentially serious problem
2 ALERT level C = Check and explain
0 ALERT level G = General alerts; check
1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
0 ALERT type 2 Indicator that the structure model may be wrong or deficient
2 ALERT type 3 Indicator that the structure quality may be low
1 ALERT type 4 Improvement, methodology, query or suggestion
0 ALERT type 5 Informative message, check
Data collection: SMART (Bruker, 2001); cell refinement: SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; 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.
pyridine–4-hydroxybenzoic acid (1/1)
top
Crystal data top
C5H5N·C7H6O3 | F(000) = 456 |
Mr = 217.22 | Dx = 1.328 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 2328 reflections |
a = 12.163 (5) Å | θ = 3.0–28.0° |
b = 9.002 (4) Å | µ = 0.10 mm−1 |
c = 11.171 (5) Å | T = 298 K |
β = 117.34 (1)° | Block, colorless |
V = 1086.6 (8) Å3 | 0.30 × 0.20 × 0.20 mm |
Z = 4 | |
Data collection top
Bruker SMART APEX CCD diffractometer | 1602 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.174 |
Graphite monochromator | θmax = 26.0°, θmin = 1.9° |
ω scans | h = −13→14 |
6841 measured reflections | k = −10→11 |
2118 independent reflections | l = −13→13 |
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)] = 0.057 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.167 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0853P)2] where P = (Fo2 + 2Fc2)/3 |
2118 reflections | (Δ/σ)max < 0.001 |
153 parameters | Δρmax = 0.20 e Å−3 |
2 restraints | Δρmin = −0.32 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 | |
C1 | 0.81095 (14) | 0.98450 (17) | 0.22189 (16) | 0.0448 (4) | |
C2 | 0.90978 (15) | 0.92984 (17) | 0.20451 (16) | 0.0478 (4) | |
H2 | 0.9177 | 0.9572 | 0.1286 | 0.057* | |
C3 | 0.99594 (16) | 0.83607 (18) | 0.29775 (17) | 0.0486 (4) | |
H3 | 1.0606 | 0.7990 | 0.2839 | 0.058* | |
C4 | 0.98594 (16) | 0.79697 (17) | 0.41266 (17) | 0.0481 (4) | |
C5 | 0.88716 (19) | 0.8500 (2) | 0.43028 (19) | 0.0577 (5) | |
H5 | 0.8793 | 0.8225 | 0.5062 | 0.069* | |
C6 | 0.80144 (17) | 0.9422 (2) | 0.33691 (18) | 0.0555 (5) | |
H6 | 0.7359 | 0.9773 | 0.3502 | 0.067* | |
C7 | 0.71921 (15) | 1.08503 (18) | 0.11980 (16) | 0.0473 (4) | |
C8 | 0.49080 (18) | 0.3418 (2) | 0.85056 (19) | 0.0605 (5) | |
H8 | 0.5622 | 0.3117 | 0.8467 | 0.073* | |
C9 | 0.4135 (2) | 0.4402 (2) | 0.7571 (2) | 0.0673 (6) | |
H9 | 0.4321 | 0.4771 | 0.6908 | 0.081* | |
C10 | 0.3080 (2) | 0.4838 (2) | 0.7626 (2) | 0.0701 (6) | |
H10 | 0.2543 | 0.5515 | 0.7003 | 0.084* | |
C11 | 0.28237 (19) | 0.4269 (2) | 0.8604 (2) | 0.0693 (6) | |
H11 | 0.2108 | 0.4542 | 0.8652 | 0.083* | |
C12 | 0.36429 (18) | 0.3291 (2) | 0.9509 (2) | 0.0612 (5) | |
H12 | 0.3471 | 0.2905 | 1.0177 | 0.073* | |
N1 | 0.46726 (13) | 0.28691 (15) | 0.94768 (15) | 0.0550 (4) | |
O1 | 0.73443 (10) | 1.13919 (14) | 0.02758 (12) | 0.0585 (4) | |
O2 | 0.62063 (12) | 1.11156 (16) | 0.13326 (14) | 0.0692 (4) | |
HO2 | 0.575 (2) | 1.168 (2) | 0.0699 (19) | 0.095 (8)* | |
O3 | 1.06855 (13) | 0.70725 (15) | 0.50993 (13) | 0.0633 (4) | |
HO3 | 1.1246 (15) | 0.689 (2) | 0.490 (2) | 0.072 (7)* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
C1 | 0.0399 (9) | 0.0486 (9) | 0.0512 (9) | −0.0043 (7) | 0.0253 (7) | −0.0045 (7) |
C2 | 0.0465 (9) | 0.0550 (9) | 0.0520 (9) | −0.0022 (7) | 0.0314 (8) | −0.0010 (7) |
C3 | 0.0409 (9) | 0.0545 (9) | 0.0600 (10) | 0.0031 (7) | 0.0312 (8) | −0.0020 (7) |
C4 | 0.0456 (9) | 0.0511 (9) | 0.0522 (9) | 0.0014 (7) | 0.0264 (8) | 0.0003 (7) |
C5 | 0.0595 (11) | 0.0729 (11) | 0.0558 (11) | 0.0121 (9) | 0.0396 (9) | 0.0109 (8) |
C6 | 0.0503 (10) | 0.0677 (11) | 0.0638 (11) | 0.0106 (8) | 0.0394 (9) | 0.0054 (8) |
C7 | 0.0400 (9) | 0.0546 (9) | 0.0531 (9) | −0.0038 (7) | 0.0265 (7) | −0.0042 (7) |
C8 | 0.0511 (11) | 0.0723 (12) | 0.0669 (12) | 0.0035 (8) | 0.0347 (9) | 0.0028 (9) |
C9 | 0.0702 (13) | 0.0784 (13) | 0.0627 (12) | 0.0056 (10) | 0.0386 (10) | 0.0132 (9) |
C10 | 0.0632 (13) | 0.0792 (13) | 0.0636 (12) | 0.0142 (10) | 0.0253 (10) | 0.0174 (9) |
C11 | 0.0527 (11) | 0.0874 (14) | 0.0759 (13) | 0.0189 (10) | 0.0364 (10) | 0.0155 (11) |
C12 | 0.0518 (11) | 0.0735 (12) | 0.0672 (12) | 0.0072 (9) | 0.0351 (10) | 0.0123 (9) |
N1 | 0.0462 (8) | 0.0628 (9) | 0.0600 (9) | 0.0037 (7) | 0.0278 (7) | 0.0049 (7) |
O1 | 0.0444 (8) | 0.0815 (9) | 0.0550 (7) | 0.0046 (5) | 0.0274 (6) | 0.0111 (6) |
O2 | 0.0515 (8) | 0.0903 (10) | 0.0802 (10) | 0.0235 (7) | 0.0425 (8) | 0.0296 (8) |
O3 | 0.0572 (8) | 0.0780 (9) | 0.0631 (8) | 0.0215 (6) | 0.0350 (7) | 0.0152 (6) |
Geometric parameters (Å, º) top
C1—C2 | 1.393 (2) | C8—N1 | 1.337 (2) |
C1—C6 | 1.395 (2) | C8—C9 | 1.363 (3) |
C1—C7 | 1.482 (2) | C8—H8 | 0.9300 |
C2—C3 | 1.376 (2) | C9—C10 | 1.370 (3) |
C2—H2 | 0.9300 | C9—H9 | 0.9300 |
C3—C4 | 1.389 (2) | C10—C11 | 1.366 (3) |
C3—H3 | 0.9300 | C10—H10 | 0.9300 |
C4—O3 | 1.356 (2) | C11—C12 | 1.366 (3) |
C4—C5 | 1.388 (2) | C11—H11 | 0.9300 |
C5—C6 | 1.366 (3) | C12—N1 | 1.325 (2) |
C5—H5 | 0.9300 | C12—H12 | 0.9300 |
C6—H6 | 0.9300 | O2—HO2 | 0.843 (10) |
C7—O1 | 1.228 (2) | O3—HO3 | 0.825 (10) |
C7—O2 | 1.297 (2) | | |
| | | |
C2—C1—C6 | 118.30 (15) | O2—C7—C1 | 115.63 (14) |
C2—C1—C7 | 120.10 (14) | N1—C8—C9 | 122.17 (17) |
C6—C1—C7 | 121.60 (14) | N1—C8—H8 | 118.9 |
C3—C2—C1 | 121.15 (15) | C9—C8—H8 | 118.9 |
C3—C2—H2 | 119.4 | C8—C9—C10 | 118.86 (18) |
C1—C2—H2 | 119.4 | C8—C9—H9 | 120.6 |
C2—C3—C4 | 119.70 (15) | C10—C9—H9 | 120.6 |
C2—C3—H3 | 120.1 | C11—C10—C9 | 119.42 (18) |
C4—C3—H3 | 120.1 | C11—C10—H10 | 120.3 |
O3—C4—C5 | 117.52 (15) | C9—C10—H10 | 120.3 |
O3—C4—C3 | 122.96 (15) | C12—C11—C10 | 118.48 (18) |
C5—C4—C3 | 119.51 (15) | C12—C11—H11 | 120.8 |
C6—C5—C4 | 120.50 (16) | C10—C11—H11 | 120.8 |
C6—C5—H5 | 119.8 | N1—C12—C11 | 122.81 (17) |
C4—C5—H5 | 119.8 | N1—C12—H12 | 118.6 |
C5—C6—C1 | 120.81 (15) | C11—C12—H12 | 118.6 |
C5—C6—H6 | 119.6 | C12—N1—C8 | 118.26 (16) |
C1—C6—H6 | 119.6 | C7—O2—HO2 | 108 (2) |
O1—C7—O2 | 121.84 (15) | C4—O3—HO3 | 107.4 (15) |
O1—C7—C1 | 122.53 (15) | | |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O2—HO2···N1i | 0.84 (1) | 1.75 (1) | 2.592 (2) | 173 (3) |
O3—HO3···O1ii | 0.83 (1) | 1.87 (1) | 2.686 (2) | 171 (2) |
Symmetry codes: (i) x, y+1, z−1; (ii) −x+2, y−1/2, −z+1/2. |
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