The title molecular complex, C
9H
7NO·C
7H
5NO
4, owes its formation to an intermolecular hydrogen bond between the O—H and N—O groups, with an O
O distance of 2.514 (2) Å. The dihedral angle between the planes of the isoquinoline N-oxide and nitrobenzoic acid rings of the complex is 49.91 (4)°. The crystal structure exhibits overlap between the aromatic rings of the molecules in the [101] direction.
Supporting information
CCDC reference: 285509
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.003 Å
- R factor = 0.040
- wR factor = 0.104
- Data-to-parameter ratio = 11.9
checkCIF/PLATON results
No syntax errors found
Alert level C
PLAT199_ALERT_1_C Check the Reported _cell_measurement_temperature 293 K
PLAT355_ALERT_3_C Long O-H Bond (0.82A) O4 - HO4 ... 1.03 Ang.
PLAT720_ALERT_4_C Number of Unusual/Non-Standard Label(s) ........ 1
0 ALERT level A = In general: serious problem
0 ALERT level B = Potentially serious problem
3 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
1 ALERT type 3 Indicator that the structure quality may be low
1 ALERT type 4 Improvement, methodology, query or suggestion
Data collection: MSC/AFC Diffractometer Control Software (Molecular Structure Corporation,
1993); cell refinement: MSC/AFC Diffractometer Control Software; data reduction: TEXSAN (Molecular Structure Corporation, 1995); program(s) used to solve structure: SHELXS86 (Sheldrick, 1990); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.
Crystal data top
C9H7NO·C7H5NO4 | F(000) = 648 |
Mr = 312.28 | Dx = 1.441 Mg m−3 |
Monoclinic, P21/c | Melting point: 387(1) K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 11.639 (3) Å | Cell parameters from 25 reflections |
b = 7.235 (4) Å | θ = 1.0–25.0° |
c = 17.206 (3) Å | µ = 0.11 mm−1 |
β = 96.399 (18)° | T = 293 K |
V = 1439.9 (9) Å3 | Prism, pale-yellow |
Z = 4 | 0.23 × 0.20 × 0.12 mm |
Data collection top
Rigaku AFC-7S diffractometer | θmax = 25.0°, θmin = 1.8° |
Radiation source: fine-focus X-ray sealed tube | h = 0→13 |
Graphite monochromator | k = 0→8 |
ω/2θ scans | l = −20→20 |
2532 measured reflections | 2 standard reflections every 150 min |
2532 independent reflections | intensity decay: none |
1847 reflections with I > 2σ(I) | |
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)] = 0.040 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.104 | w = 1/[σ2(Fo2) + (0.0367P)2 + 0.6379P] where P = (Fo2 + 2Fc2)/3 |
S = 1.08 | (Δ/σ)max < 0.001 |
2532 reflections | Δρmax = 0.18 e Å−3 |
213 parameters | Δρmin = −0.16 e Å−3 |
0 restraints | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0214 (15) |
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
O1 | 0.40744 (12) | 0.1866 (2) | 0.22580 (8) | 0.0465 (4) | |
N1 | 0.48582 (14) | 0.1614 (2) | 0.17589 (10) | 0.0367 (4) | |
C8 | 0.49669 (17) | −0.0030 (3) | 0.14362 (12) | 0.0380 (5) | |
H8 | 0.4485 | −0.0990 | 0.1556 | 0.046* | |
C9 | 0.57919 (17) | −0.0354 (3) | 0.09174 (11) | 0.0359 (5) | |
C16 | 0.55663 (17) | 0.3065 (3) | 0.16014 (12) | 0.0420 (5) | |
H16 | 0.5485 | 0.4208 | 0.1836 | 0.050* | |
C14 | 0.65181 (17) | 0.1123 (3) | 0.07356 (12) | 0.0386 (5) | |
C15 | 0.63738 (18) | 0.2825 (3) | 0.11095 (13) | 0.0430 (5) | |
H15 | 0.6851 | 0.3811 | 0.1014 | 0.052* | |
C10 | 0.58902 (19) | −0.2097 (3) | 0.05616 (13) | 0.0455 (5) | |
H10 | 0.5420 | −0.3072 | 0.0681 | 0.055* | |
C13 | 0.73171 (18) | 0.0807 (3) | 0.01953 (13) | 0.0489 (6) | |
H13 | 0.7800 | 0.1758 | 0.0068 | 0.059* | |
C12 | 0.7387 (2) | −0.0885 (4) | −0.01425 (14) | 0.0548 (6) | |
H12 | 0.7916 | −0.1075 | −0.0502 | 0.066* | |
C11 | 0.6677 (2) | −0.2342 (3) | 0.00431 (13) | 0.0522 (6) | |
H11 | 0.6744 | −0.3491 | −0.0191 | 0.063* | |
O4 | 0.24361 (14) | 0.4142 (2) | 0.20581 (11) | 0.0579 (5) | |
HO4 | 0.315 (3) | 0.330 (5) | 0.2080 (19) | 0.109 (12)* | |
N2 | 0.01858 (18) | 0.4717 (3) | 0.10164 (12) | 0.0547 (5) | |
C2 | 0.04442 (18) | 0.6520 (3) | 0.13718 (12) | 0.0399 (5) | |
C1 | 0.15747 (17) | 0.6985 (3) | 0.16543 (12) | 0.0373 (5) | |
C7 | 0.25856 (17) | 0.5686 (3) | 0.16991 (13) | 0.0413 (5) | |
C6 | 0.17605 (19) | 0.8761 (3) | 0.19298 (13) | 0.0454 (6) | |
H6 | 0.2506 | 0.9122 | 0.2120 | 0.054* | |
C5 | 0.0867 (2) | 1.0021 (3) | 0.19299 (14) | 0.0518 (6) | |
H5 | 0.1016 | 1.1215 | 0.2114 | 0.062* | |
C4 | −0.0242 (2) | 0.9506 (3) | 0.16577 (15) | 0.0554 (6) | |
H4 | −0.0846 | 1.0346 | 0.1664 | 0.066* | |
C3 | −0.04582 (19) | 0.7751 (3) | 0.13765 (14) | 0.0508 (6) | |
H3 | −0.1207 | 0.7396 | 0.1191 | 0.061* | |
O5 | 0.34724 (14) | 0.6113 (2) | 0.14451 (13) | 0.0738 (6) | |
O2 | 0.08988 (17) | 0.4029 (3) | 0.06384 (12) | 0.0775 (6) | |
O3 | −0.07481 (17) | 0.4013 (3) | 0.10961 (14) | 0.0884 (7) | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.0473 (8) | 0.0438 (9) | 0.0507 (9) | 0.0115 (7) | 0.0158 (7) | 0.0054 (7) |
N1 | 0.0353 (9) | 0.0337 (10) | 0.0405 (9) | 0.0034 (7) | 0.0022 (8) | 0.0010 (8) |
C8 | 0.0371 (11) | 0.0323 (11) | 0.0437 (12) | −0.0013 (9) | 0.0006 (9) | 0.0041 (10) |
C9 | 0.0340 (10) | 0.0349 (11) | 0.0371 (11) | 0.0031 (9) | −0.0033 (9) | 0.0037 (9) |
C16 | 0.0438 (12) | 0.0312 (11) | 0.0495 (13) | −0.0020 (10) | −0.0006 (10) | −0.0045 (10) |
C14 | 0.0343 (11) | 0.0374 (12) | 0.0430 (11) | 0.0011 (9) | −0.0011 (9) | 0.0037 (10) |
C15 | 0.0395 (11) | 0.0365 (12) | 0.0522 (13) | −0.0067 (10) | 0.0018 (10) | 0.0028 (10) |
C10 | 0.0500 (13) | 0.0346 (12) | 0.0506 (13) | 0.0021 (10) | −0.0002 (11) | −0.0014 (10) |
C13 | 0.0390 (12) | 0.0537 (15) | 0.0548 (14) | 0.0013 (11) | 0.0088 (10) | 0.0084 (12) |
C12 | 0.0531 (14) | 0.0635 (17) | 0.0493 (13) | 0.0171 (13) | 0.0130 (11) | 0.0048 (13) |
C11 | 0.0623 (15) | 0.0445 (13) | 0.0488 (13) | 0.0148 (12) | 0.0024 (12) | −0.0050 (11) |
O4 | 0.0437 (9) | 0.0492 (10) | 0.0831 (12) | 0.0100 (8) | 0.0178 (8) | 0.0239 (9) |
N2 | 0.0501 (12) | 0.0435 (12) | 0.0669 (14) | −0.0001 (10) | −0.0104 (10) | −0.0021 (10) |
C2 | 0.0399 (11) | 0.0363 (12) | 0.0428 (12) | −0.0004 (9) | 0.0012 (9) | 0.0037 (10) |
C1 | 0.0352 (11) | 0.0352 (11) | 0.0425 (11) | −0.0005 (9) | 0.0080 (9) | 0.0054 (10) |
C7 | 0.0349 (11) | 0.0383 (12) | 0.0504 (13) | −0.0023 (10) | 0.0040 (10) | 0.0000 (10) |
C6 | 0.0404 (12) | 0.0398 (13) | 0.0558 (14) | −0.0038 (10) | 0.0053 (10) | −0.0014 (11) |
C5 | 0.0620 (15) | 0.0373 (12) | 0.0575 (14) | 0.0023 (12) | 0.0135 (12) | −0.0037 (11) |
C4 | 0.0536 (14) | 0.0469 (15) | 0.0670 (16) | 0.0150 (12) | 0.0122 (12) | 0.0072 (12) |
C3 | 0.0380 (12) | 0.0495 (14) | 0.0633 (15) | 0.0049 (11) | −0.0013 (11) | 0.0071 (12) |
O5 | 0.0439 (10) | 0.0509 (11) | 0.1322 (17) | 0.0026 (8) | 0.0348 (11) | 0.0183 (11) |
O2 | 0.0697 (12) | 0.0662 (13) | 0.0938 (14) | 0.0141 (10) | −0.0032 (11) | −0.0316 (11) |
O3 | 0.0646 (12) | 0.0676 (14) | 0.1300 (18) | −0.0276 (11) | −0.0027 (12) | −0.0100 (13) |
Geometric parameters (Å, º) top
O1—N1 | 1.333 (2) | O4—C7 | 1.297 (3) |
N1—C8 | 1.325 (3) | O4—HO4 | 1.03 (3) |
N1—C16 | 1.380 (3) | N2—O2 | 1.216 (2) |
C8—C9 | 1.402 (3) | N2—O3 | 1.222 (3) |
C8—H8 | 0.9300 | N2—C2 | 1.458 (3) |
C9—C10 | 1.412 (3) | C2—C3 | 1.378 (3) |
C9—C14 | 1.419 (3) | C2—C1 | 1.392 (3) |
C16—C15 | 1.344 (3) | C1—C6 | 1.378 (3) |
C16—H16 | 0.9300 | C1—C7 | 1.501 (3) |
C14—C13 | 1.405 (3) | C7—O5 | 1.205 (2) |
C14—C15 | 1.408 (3) | C7—O4 | 1.297 (3) |
C15—H15 | 0.9300 | C6—C5 | 1.383 (3) |
C10—C11 | 1.359 (3) | C6—H6 | 0.9300 |
C10—H10 | 0.9300 | C5—C4 | 1.374 (3) |
C13—C12 | 1.361 (3) | C5—H5 | 0.9300 |
C13—H13 | 0.9300 | C4—C3 | 1.372 (3) |
C12—C11 | 1.399 (3) | C4—H4 | 0.9300 |
C12—H12 | 0.9300 | C3—H3 | 0.9300 |
C11—H11 | 0.9300 | | |
| | | |
C8—N1—O1 | 119.79 (17) | C10—C11—H11 | 119.7 |
C8—N1—C16 | 120.90 (18) | C12—C11—H11 | 119.7 |
O1—N1—C16 | 119.29 (17) | C7—O4—HO4 | 112.4 (18) |
N1—C8—C9 | 121.42 (19) | O2—N2—O3 | 123.9 (2) |
N1—C8—H8 | 119.3 | O2—N2—C2 | 118.0 (2) |
C9—C8—H8 | 119.3 | O3—N2—C2 | 118.1 (2) |
C8—C9—C10 | 121.31 (19) | C3—C2—C1 | 122.2 (2) |
C8—C9—C14 | 118.79 (19) | C3—C2—N2 | 117.33 (19) |
C10—C9—C14 | 119.9 (2) | C1—C2—N2 | 120.36 (19) |
C15—C16—N1 | 120.0 (2) | C6—C1—C2 | 116.82 (19) |
C15—C16—H16 | 120.0 | C6—C1—C7 | 118.30 (19) |
N1—C16—H16 | 120.0 | C2—C1—C7 | 124.86 (19) |
C13—C14—C15 | 124.5 (2) | O5—C7—O4 | 124.0 (2) |
C13—C14—C9 | 118.5 (2) | O5—C7—C1 | 121.3 (2) |
C15—C14—C9 | 116.97 (19) | O4—C7—C1 | 114.67 (18) |
C16—C15—C14 | 121.9 (2) | C1—C6—C5 | 121.7 (2) |
C16—C15—H15 | 119.1 | C1—C6—H6 | 119.2 |
C14—C15—H15 | 119.1 | C5—C6—H6 | 119.2 |
C11—C10—C9 | 119.6 (2) | C4—C5—C6 | 119.9 (2) |
C11—C10—H10 | 120.2 | C4—C5—H5 | 120.0 |
C9—C10—H10 | 120.2 | C6—C5—H5 | 120.0 |
C12—C13—C14 | 120.3 (2) | C3—C4—C5 | 120.0 (2) |
C12—C13—H13 | 119.8 | C3—C4—H4 | 120.0 |
C14—C13—H13 | 119.8 | C5—C4—H4 | 120.0 |
C13—C12—C11 | 121.0 (2) | C4—C3—C2 | 119.4 (2) |
C13—C12—H12 | 119.5 | C4—C3—H3 | 120.3 |
C11—C12—H12 | 119.5 | C2—C3—H3 | 120.3 |
C10—C11—C12 | 120.7 (2) | | |
| | | |
O1—N1—C8—C9 | −179.10 (17) | O2—N2—C2—C3 | 142.0 (2) |
C16—N1—C8—C9 | −0.8 (3) | O3—N2—C2—C3 | −35.8 (3) |
N1—C8—C9—C10 | −178.69 (19) | O2—N2—C2—C1 | −34.7 (3) |
N1—C8—C9—C14 | −0.3 (3) | O3—N2—C2—C1 | 147.4 (2) |
C8—N1—C16—C15 | 0.6 (3) | C3—C2—C1—C6 | −1.2 (3) |
O1—N1—C16—C15 | 178.91 (18) | N2—C2—C1—C6 | 175.42 (19) |
C8—C9—C14—C13 | −177.91 (18) | C3—C2—C1—C7 | 177.1 (2) |
C10—C9—C14—C13 | 0.5 (3) | N2—C2—C1—C7 | −6.3 (3) |
C8—C9—C14—C15 | 1.5 (3) | C6—C1—C7—O5 | −51.5 (3) |
C10—C9—C14—C15 | 179.88 (19) | C2—C1—C7—O5 | 130.2 (2) |
N1—C16—C15—C14 | 0.7 (3) | C6—C1—C7—O4 | 125.5 (2) |
C13—C14—C15—C16 | 177.6 (2) | C2—C1—C7—O4 | −52.7 (3) |
C9—C14—C15—C16 | −1.7 (3) | C2—C1—C6—C5 | 0.3 (3) |
C8—C9—C10—C11 | 178.0 (2) | C7—C1—C6—C5 | −178.0 (2) |
C14—C9—C10—C11 | −0.4 (3) | C1—C6—C5—C4 | 0.7 (4) |
C15—C14—C13—C12 | −179.4 (2) | C6—C5—C4—C3 | −0.9 (4) |
C9—C14—C13—C12 | −0.1 (3) | C5—C4—C3—C2 | 0.1 (4) |
C14—C13—C12—C11 | −0.5 (3) | C1—C2—C3—C4 | 0.9 (3) |
C9—C10—C11—C12 | −0.1 (3) | N2—C2—C3—C4 | −175.7 (2) |
C13—C12—C11—C10 | 0.6 (4) | | |