The title compound, C
21H
13NO
4, was prepared by the reaction of anthrone and 4-hydroxy-3-nitrobenzaldehyde catalysed by anhydrous hydrogen chloride. In the molecule, the anthraquinone fragment is non-planar; the central six-membered ring adopts an asymmetric boat conformation, while the two outer rings make a dihedral angle of 36.0 (1)°. Weak intermolecular C—H
O hydrogen bonds link the molecules into centrosymmetric dimers.
Supporting information
CCDC reference: 295085
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.004 Å
- R factor = 0.045
- wR factor = 0.137
- Data-to-parameter ratio = 11.6
checkCIF/PLATON results
No syntax errors found
Alert level C
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical . ?
PLAT152_ALERT_1_C Supplied and Calc Volume s.u. Inconsistent ..... ?
PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd. # 1
C21 H13 N O4
Alert level G
PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K
PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature . 293 K
0 ALERT level A = In general: serious problem
0 ALERT level B = Potentially serious problem
3 ALERT level C = Check and explain
2 ALERT level G = General alerts; check
4 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
0 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: 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: ORTEP-3 for Windows (Version 1.05; Farrugia, 1997); software used to prepare material for publication: SHELXL97.
10-(4-Hydroxy-3-nitrobenzylidene)anthrone
top
Crystal data top
C21H13NO4 | F(000) = 712 |
Mr = 343.32 | Dx = 1.465 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 25 reflections |
a = 8.545 (4) Å | θ = 10.3–13.2° |
b = 14.588 (3) Å | µ = 0.10 mm−1 |
c = 13.916 (4) Å | T = 293 K |
β = 116.22 (2)° | Prism, orange |
V = 1556.3 (9) Å3 | 0.50 × 0.30 × 0.20 mm |
Z = 4 | |
Data collection top
Enraf–Nonius CAD-4 diffractometer | 1590 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.041 |
Graphite monochromator | θmax = 25.2°, θmin = 2.2° |
ω/2θ scans | h = −10→0 |
Absorption correction: ψ scan (North et al., 1968) | k = −17→1 |
Tmin = 0.951, Tmax = 0.980 | l = −14→16 |
3238 measured reflections | 3 standard reflections every 60 min |
2790 independent reflections | intensity decay: none |
Refinement top
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) = 0.137 | w = 1/[σ2(Fo2) + (0.067P)2 + 0.1995P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max < 0.001 |
2790 reflections | Δρmax = 0.18 e Å−3 |
240 parameters | Δρmin = −0.20 e Å−3 |
1 restraint | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.011 (2) |
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 | −0.3582 (3) | −0.10060 (16) | 0.86240 (18) | 0.0678 (7) | |
O2 | 0.5665 (3) | −0.34005 (18) | 0.68504 (19) | 0.0673 (7) | |
H2X | 0.631 (5) | −0.387 (2) | 0.712 (3) | 0.106 (16)* | |
O3 | 0.7141 (3) | −0.47767 (16) | 0.80674 (17) | 0.0623 (6) | |
O4 | 0.6001 (3) | −0.54189 (15) | 0.90031 (17) | 0.0596 (6) | |
N1 | 0.6017 (3) | −0.48083 (17) | 0.84083 (18) | 0.0443 (6) | |
C1 | −0.0493 (4) | −0.0191 (2) | 0.8694 (2) | 0.0484 (7) | |
H1 | −0.1425 | 0.0203 | 0.8553 | 0.058* | |
C2 | 0.1038 (4) | 0.0151 (2) | 0.8740 (2) | 0.0542 (8) | |
H2 | 0.1136 | 0.0771 | 0.8619 | 0.065* | |
C3 | 0.2424 (4) | −0.0431 (2) | 0.8968 (2) | 0.0535 (8) | |
H3 | 0.3478 | −0.0199 | 0.9030 | 0.064* | |
C4 | 0.2264 (4) | −0.13539 (19) | 0.9103 (2) | 0.0462 (7) | |
H4 | 0.3209 | −0.1739 | 0.9246 | 0.055* | |
C5 | 0.0494 (3) | −0.27059 (18) | 0.9181 (2) | 0.0351 (6) | |
C6 | −0.0391 (4) | −0.36772 (18) | 1.0363 (2) | 0.0416 (7) | |
H6 | 0.0466 | −0.4102 | 1.0436 | 0.050* | |
C7 | −0.1398 (4) | −0.3813 (2) | 1.0896 (2) | 0.0476 (7) | |
H7 | −0.1190 | −0.4319 | 1.1343 | 0.057* | |
C8 | −0.2714 (4) | −0.3206 (2) | 1.0775 (2) | 0.0530 (8) | |
H8 | −0.3396 | −0.3306 | 1.1132 | 0.064* | |
C9 | −0.3007 (4) | −0.2456 (2) | 1.0124 (2) | 0.0482 (8) | |
H9 | −0.3900 | −0.2050 | 1.0035 | 0.058* | |
C10 | −0.2234 (4) | −0.1449 (2) | 0.8964 (2) | 0.0442 (7) | |
C11 | 0.0711 (3) | −0.17231 (18) | 0.9030 (2) | 0.0376 (6) | |
C12 | −0.0640 (3) | −0.29100 (17) | 0.9713 (2) | 0.0365 (6) | |
C13 | −0.1975 (3) | −0.22966 (18) | 0.9594 (2) | 0.0388 (7) | |
C14 | −0.0665 (4) | −0.11161 (18) | 0.8856 (2) | 0.0398 (7) | |
C15 | 0.1234 (3) | −0.34030 (19) | 0.8892 (2) | 0.0401 (7) | |
H15 | 0.1009 | −0.3981 | 0.9084 | 0.048* | |
C16 | 0.2342 (3) | −0.34060 (18) | 0.8322 (2) | 0.0375 (6) | |
C17 | 0.2152 (4) | −0.2792 (2) | 0.7506 (2) | 0.0476 (7) | |
H17 | 0.1256 | −0.2363 | 0.7283 | 0.057* | |
C18 | 0.3253 (4) | −0.2805 (2) | 0.7026 (2) | 0.0519 (8) | |
H18 | 0.3101 | −0.2381 | 0.6492 | 0.062* | |
C19 | 0.4594 (4) | −0.3447 (2) | 0.7331 (2) | 0.0447 (7) | |
C20 | 0.4721 (3) | −0.40921 (18) | 0.80923 (19) | 0.0354 (6) | |
C21 | 0.3607 (3) | −0.40713 (18) | 0.85801 (19) | 0.0362 (6) | |
H21 | 0.3719 | −0.4513 | 0.9088 | 0.043* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.0418 (12) | 0.0759 (15) | 0.0851 (16) | 0.0251 (11) | 0.0276 (12) | 0.0126 (13) |
O2 | 0.0693 (15) | 0.0870 (18) | 0.0730 (15) | 0.0106 (14) | 0.0566 (13) | 0.0209 (14) |
O3 | 0.0473 (12) | 0.0884 (17) | 0.0681 (14) | 0.0147 (12) | 0.0409 (11) | 0.0039 (12) |
O4 | 0.0646 (14) | 0.0635 (14) | 0.0655 (14) | 0.0240 (12) | 0.0422 (12) | 0.0188 (12) |
N1 | 0.0381 (13) | 0.0585 (16) | 0.0441 (13) | 0.0064 (12) | 0.0252 (11) | −0.0030 (12) |
C1 | 0.0583 (19) | 0.0443 (17) | 0.0445 (16) | 0.0125 (15) | 0.0244 (15) | 0.0040 (14) |
C2 | 0.076 (2) | 0.0401 (16) | 0.0526 (18) | −0.0035 (17) | 0.0339 (17) | 0.0031 (14) |
C3 | 0.0528 (19) | 0.057 (2) | 0.0564 (18) | −0.0146 (16) | 0.0289 (16) | −0.0024 (16) |
C4 | 0.0396 (16) | 0.0501 (18) | 0.0528 (18) | −0.0013 (13) | 0.0241 (14) | −0.0002 (14) |
C5 | 0.0282 (13) | 0.0405 (15) | 0.0390 (14) | 0.0043 (11) | 0.0169 (12) | 0.0010 (12) |
C6 | 0.0406 (15) | 0.0411 (16) | 0.0495 (16) | −0.0012 (12) | 0.0256 (13) | −0.0048 (13) |
C7 | 0.0548 (18) | 0.0465 (17) | 0.0524 (17) | −0.0115 (14) | 0.0335 (15) | −0.0064 (14) |
C8 | 0.0484 (17) | 0.062 (2) | 0.0641 (19) | −0.0187 (16) | 0.0391 (16) | −0.0141 (17) |
C9 | 0.0304 (15) | 0.062 (2) | 0.0598 (18) | −0.0045 (14) | 0.0265 (14) | −0.0141 (16) |
C10 | 0.0324 (14) | 0.0555 (18) | 0.0454 (15) | 0.0062 (14) | 0.0179 (12) | −0.0065 (14) |
C11 | 0.0368 (14) | 0.0428 (16) | 0.0375 (14) | 0.0046 (13) | 0.0204 (12) | 0.0004 (12) |
C12 | 0.0325 (14) | 0.0400 (15) | 0.0409 (15) | −0.0026 (12) | 0.0197 (12) | −0.0078 (13) |
C13 | 0.0310 (14) | 0.0454 (17) | 0.0433 (15) | −0.0007 (12) | 0.0194 (12) | −0.0075 (13) |
C14 | 0.0419 (15) | 0.0426 (17) | 0.0361 (14) | 0.0040 (13) | 0.0182 (12) | −0.0015 (12) |
C15 | 0.0387 (15) | 0.0422 (16) | 0.0468 (16) | 0.0055 (13) | 0.0257 (13) | 0.0045 (13) |
C16 | 0.0356 (14) | 0.0409 (15) | 0.0409 (14) | 0.0042 (12) | 0.0214 (12) | −0.0016 (12) |
C17 | 0.0525 (18) | 0.0501 (18) | 0.0468 (16) | 0.0170 (14) | 0.0279 (15) | 0.0093 (14) |
C18 | 0.0589 (19) | 0.0594 (19) | 0.0445 (17) | 0.0114 (16) | 0.0292 (15) | 0.0132 (15) |
C19 | 0.0437 (16) | 0.0580 (19) | 0.0427 (16) | −0.0027 (15) | 0.0285 (14) | −0.0006 (14) |
C20 | 0.0325 (14) | 0.0413 (15) | 0.0367 (14) | 0.0034 (12) | 0.0192 (12) | −0.0013 (12) |
C21 | 0.0375 (14) | 0.0405 (15) | 0.0358 (13) | −0.0008 (12) | 0.0209 (12) | −0.0009 (12) |
Geometric parameters (Å, º) top
O1—C10 | 1.219 (3) | C7—C8 | 1.382 (4) |
O2—C19 | 1.352 (3) | C7—H7 | 0.9300 |
O2—H2X | 0.86 (4) | C8—C9 | 1.371 (4) |
O3—N1 | 1.246 (3) | C8—H8 | 0.9300 |
O4—N1 | 1.220 (3) | C9—C13 | 1.396 (4) |
N1—C20 | 1.443 (3) | C9—H9 | 0.9300 |
C1—C2 | 1.375 (4) | C10—C13 | 1.475 (4) |
C1—C14 | 1.387 (4) | C10—C14 | 1.495 (4) |
C1—H1 | 0.9300 | C11—C14 | 1.405 (4) |
C2—C3 | 1.376 (4) | C12—C13 | 1.401 (3) |
C2—H2 | 0.9300 | C15—C16 | 1.480 (3) |
C3—C4 | 1.374 (4) | C15—H15 | 0.9300 |
C3—H3 | 0.9300 | C16—C21 | 1.377 (4) |
C4—C11 | 1.393 (4) | C16—C17 | 1.398 (4) |
C4—H4 | 0.9300 | C17—C18 | 1.374 (4) |
C5—C15 | 1.349 (3) | C17—H17 | 0.9300 |
C5—C11 | 1.473 (4) | C18—C19 | 1.394 (4) |
C5—C12 | 1.487 (3) | C18—H18 | 0.9300 |
C6—C7 | 1.377 (4) | C19—C20 | 1.385 (4) |
C6—C12 | 1.394 (4) | C20—C21 | 1.392 (3) |
C6—H6 | 0.9300 | C21—H21 | 0.9300 |
| | | |
C19—O2—H2X | 101 (3) | C4—C11—C14 | 117.8 (2) |
O4—N1—O3 | 121.8 (2) | C4—C11—C5 | 122.8 (2) |
O4—N1—C20 | 119.9 (2) | C14—C11—C5 | 119.3 (2) |
O3—N1—C20 | 118.3 (2) | C6—C12—C13 | 118.2 (2) |
C2—C1—C14 | 120.9 (3) | C6—C12—C5 | 122.5 (2) |
C2—C1—H1 | 119.6 | C13—C12—C5 | 119.3 (2) |
C14—C1—H1 | 119.6 | C9—C13—C12 | 120.1 (3) |
C1—C2—C3 | 119.4 (3) | C9—C13—C10 | 119.3 (2) |
C1—C2—H2 | 120.3 | C12—C13—C10 | 120.4 (2) |
C3—C2—H2 | 120.3 | C1—C14—C11 | 120.0 (3) |
C4—C3—C2 | 120.6 (3) | C1—C14—C10 | 119.8 (2) |
C4—C3—H3 | 119.7 | C11—C14—C10 | 119.8 (2) |
C2—C3—H3 | 119.7 | C5—C15—C16 | 131.1 (3) |
C3—C4—C11 | 121.2 (3) | C5—C15—H15 | 114.5 |
C3—C4—H4 | 119.4 | C16—C15—H15 | 114.5 |
C11—C4—H4 | 119.4 | C21—C16—C17 | 117.4 (2) |
C15—C5—C11 | 125.9 (2) | C21—C16—C15 | 118.5 (2) |
C15—C5—C12 | 119.5 (2) | C17—C16—C15 | 124.1 (2) |
C11—C5—C12 | 114.7 (2) | C18—C17—C16 | 121.8 (3) |
C7—C6—C12 | 120.8 (3) | C18—C17—H17 | 119.1 |
C7—C6—H6 | 119.6 | C16—C17—H17 | 119.1 |
C12—C6—H6 | 119.6 | C17—C18—C19 | 120.6 (3) |
C6—C7—C8 | 120.7 (3) | C17—C18—H18 | 119.7 |
C6—C7—H7 | 119.7 | C19—C18—H18 | 119.7 |
C8—C7—H7 | 119.7 | O2—C19—C20 | 124.9 (3) |
C9—C8—C7 | 119.6 (3) | O2—C19—C18 | 117.4 (3) |
C9—C8—H8 | 120.2 | C20—C19—C18 | 117.7 (2) |
C7—C8—H8 | 120.2 | C19—C20—C21 | 121.3 (2) |
C8—C9—C13 | 120.5 (3) | C19—C20—N1 | 121.0 (2) |
C8—C9—H9 | 119.7 | C21—C20—N1 | 117.7 (2) |
C13—C9—H9 | 119.7 | C16—C21—C20 | 121.0 (2) |
O1—C10—C13 | 122.9 (3) | C16—C21—H21 | 119.5 |
O1—C10—C14 | 121.6 (3) | C20—C21—H21 | 119.5 |
C13—C10—C14 | 115.3 (2) | | |
| | | |
C14—C1—C2—C3 | −1.1 (4) | C4—C11—C14—C1 | 4.1 (4) |
C1—C2—C3—C4 | 2.8 (4) | C5—C11—C14—C1 | −178.9 (2) |
C2—C3—C4—C11 | −0.9 (5) | C4—C11—C14—C10 | −169.2 (2) |
C12—C6—C7—C8 | 1.9 (4) | C5—C11—C14—C10 | 7.8 (4) |
C6—C7—C8—C9 | −0.6 (4) | O1—C10—C14—C1 | 21.1 (4) |
C7—C8—C9—C13 | −0.7 (4) | C13—C10—C14—C1 | −153.3 (3) |
C3—C4—C11—C14 | −2.5 (4) | O1—C10—C14—C11 | −165.6 (3) |
C3—C4—C11—C5 | −179.3 (3) | C13—C10—C14—C11 | 20.0 (3) |
C15—C5—C11—C4 | −34.6 (4) | C11—C5—C15—C16 | −3.4 (5) |
C12—C5—C11—C4 | 144.8 (3) | C12—C5—C15—C16 | 177.2 (3) |
C15—C5—C11—C14 | 148.7 (3) | C5—C15—C16—C21 | 147.3 (3) |
C12—C5—C11—C14 | −32.0 (3) | C5—C15—C16—C17 | −35.0 (5) |
C7—C6—C12—C13 | −1.8 (4) | C21—C16—C17—C18 | −4.4 (4) |
C7—C6—C12—C5 | 175.9 (3) | C15—C16—C17—C18 | 177.9 (3) |
C15—C5—C12—C6 | 30.4 (4) | C16—C17—C18—C19 | 0.9 (5) |
C11—C5—C12—C6 | −149.0 (2) | C17—C18—C19—O2 | −177.8 (3) |
C15—C5—C12—C13 | −151.9 (2) | C17—C18—C19—C20 | 3.0 (4) |
C11—C5—C12—C13 | 28.7 (3) | O2—C19—C20—C21 | 177.4 (3) |
C8—C9—C13—C12 | 0.8 (4) | C18—C19—C20—C21 | −3.4 (4) |
C8—C9—C13—C10 | −175.5 (3) | O2—C19—C20—N1 | −2.4 (4) |
C6—C12—C13—C9 | 0.5 (4) | C18—C19—C20—N1 | 176.8 (3) |
C5—C12—C13—C9 | −177.3 (2) | O4—N1—C20—C19 | −173.1 (2) |
C6—C12—C13—C10 | 176.7 (2) | O3—N1—C20—C19 | 7.6 (4) |
C5—C12—C13—C10 | −1.1 (4) | O4—N1—C20—C21 | 7.0 (4) |
O1—C10—C13—C9 | −21.5 (4) | O3—N1—C20—C21 | −172.3 (2) |
C14—C10—C13—C9 | 152.9 (2) | C17—C16—C21—C20 | 3.9 (4) |
O1—C10—C13—C12 | 162.3 (3) | C15—C16—C21—C20 | −178.1 (2) |
C14—C10—C13—C12 | −23.3 (3) | C19—C20—C21—C16 | −0.1 (4) |
C2—C1—C14—C11 | −2.4 (4) | N1—C20—C21—C16 | 179.8 (2) |
C2—C1—C14—C10 | 170.9 (2) | | |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2X···O3 | 0.86 (4) | 1.78 (3) | 2.569 (3) | 153 (4) |
C21—H21···O4i | 0.93 | 2.56 | 3.314 (3) | 138 |
Symmetry code: (i) −x+1, −y−1, −z+2. |