Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536811002534/fl2332sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536811002534/fl2332Isup2.hkl |
CCDC reference: 811408
Key indicators
- Single-crystal X-ray study
- T = 123 K
- Mean (C-C) = 0.004 Å
- Disorder in main residue
- R factor = 0.068
- wR factor = 0.198
- Data-to-parameter ratio = 13.4
checkCIF/PLATON results
No syntax errors found
Alert level A PLAT923_ALERT_1_A S values in the CIF and FCF Differ by ....... -0.11
Alert level B PLAT230_ALERT_2_B Hirshfeld Test Diff for O6A -- N3B .. 8.97 su PLAT430_ALERT_2_B Short Inter D...A Contact O3B .. O3B .. 2.79 Ang.
Alert level C PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for N3B PLAT250_ALERT_2_C Large U3/U1 Ratio for Average U(i,j) Tensor .... 2.09 PLAT910_ALERT_3_C Missing # of FCF Reflections Below Th(Min) ..... 2 PLAT911_ALERT_3_C Missing # FCF Refl Between THmin & STh/L= 0.600 3 PLAT913_ALERT_3_C Missing # of Very Strong Reflections in FCF .... 2 PLAT912_ALERT_4_C Missing # of FCF Reflections Above STh/L= 0.600 146 PLAT922_ALERT_1_C wR2 * 100.0 in the CIF and FCF Differ by ....... 0.44 PLAT927_ALERT_1_C Reported and Calculated wR2 * 100.0 Differ by . 0.43 PLAT928_ALERT_1_C Reported and Calculated S value Differ by . -0.11
Alert level G PLAT301_ALERT_3_G Note: Main Residue Disorder ................... 5.00 Perc. PLAT432_ALERT_2_G Short Inter X...Y Contact O3B .. C9 .. 2.98 Ang. PLAT153_ALERT_1_G The su's on the Cell Axes are Equal (x 100000) 40 Ang. PLAT154_ALERT_1_G The su's on the Cell Angles are Equal (x 10000) 300 Deg. PLAT720_ALERT_4_G Number of Unusual/Non-Standard Labels .......... 2 PLAT793_ALERT_4_G The Model has Chirality at C11 (Verify) .... R
1 ALERT level A = In general: serious problem 2 ALERT level B = Potentially serious problem 9 ALERT level C = Check and explain 6 ALERT level G = General alerts; check 6 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 5 ALERT type 2 Indicator that the structure model may be wrong or deficient 4 ALERT type 3 Indicator that the structure quality may be low 3 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check
Lomefloxacin hydrochloride (3.87 g, 0.01 mol) of picric acid (2.99 g, 0.01 mol) was dissolved in 15 ml of dimethyl formamide. The solution was stirred for 15 min over a heating magnetic stirrer at 335 K. The resulting solution was kept aside at room temperature. X-ray quality crystals were grown from slow evaporation of dimethyl formamide solution (m.p.: 489 – 491 K).
The O atoms on one of the o-nitrate groups in the picrate anion are disordered [occupancy O6A and O7A = 0.762 (4); O6B and O7B = 0.238 (4)]. The N3B–O6A and N3B–O6B dstances were fixed at 1.23Å. The O6A–O7A and O6B–O7B angular distances were fixed at 2.15Å. All of the H atoms were placed in their calculated positions and then refined using the riding model with Atom—H lengths of 0.95Å (CH), 0.99Å (CH2), 0.98Å (CH3), 0.92Å (NH), or 0.84 (OH). Isotropic displacement parameters for these atoms were set to 1.20 times (NH), 1.45 (OH), 1.19-1.20 (CH, CH2) or 1.49 (CH3) times Ueq of the parent atom.
Data collection: CrysAlis PRO (Oxford Diffraction, 2007); cell refinement: CrysAlis PRO (Oxford Diffraction, 2007); data reduction: CrysAlis RED (Oxford Diffraction, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
C17H20F2N3O3+·C6H2N3O7− | Z = 2 |
Mr = 580.47 | F(000) = 600 |
Triclinic, P1 | Dx = 1.519 Mg m−3 |
Hall symbol: -P 1 | Cu Kα radiation, λ = 1.54178 Å |
a = 10.9314 (4) Å | Cell parameters from 6216 reflections |
b = 11.6748 (4) Å | θ = 4.7–73.8° |
c = 12.0530 (4) Å | µ = 1.13 mm−1 |
α = 92.969 (3)° | T = 123 K |
β = 115.555 (3)° | Prism, pale yellow |
γ = 109.852 (3)° | 0.44 × 0.33 × 0.19 mm |
V = 1269.14 (8) Å3 |
Oxford Diffraction Xcalibur Ruby Gemini diffractometer | 5002 independent reflections |
Radiation source: Enhance (Cu) X-ray Source | 4423 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.018 |
Detector resolution: 10.5081 pixels mm-1 | θmax = 74.0°, θmin = 4.7° |
ω scans | h = −13→13 |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2007) | k = −14→14 |
Tmin = 0.838, Tmax = 1.000 | l = −15→11 |
8890 measured reflections |
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)] = 0.068 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.198 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0848P)2 + 0.7775P] where P = (Fo2 + 2Fc2)/3 |
5002 reflections | (Δ/σ)max = 0.011 |
373 parameters | Δρmax = 0.54 e Å−3 |
0 restraints | Δρmin = −0.59 e Å−3 |
C17H20F2N3O3+·C6H2N3O7− | γ = 109.852 (3)° |
Mr = 580.47 | V = 1269.14 (8) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.9314 (4) Å | Cu Kα radiation |
b = 11.6748 (4) Å | µ = 1.13 mm−1 |
c = 12.0530 (4) Å | T = 123 K |
α = 92.969 (3)° | 0.44 × 0.33 × 0.19 mm |
β = 115.555 (3)° |
Oxford Diffraction Xcalibur Ruby Gemini diffractometer | 5002 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2007) | 4423 reflections with I > 2σ(I) |
Tmin = 0.838, Tmax = 1.000 | Rint = 0.018 |
8890 measured reflections |
R[F2 > 2σ(F2)] = 0.068 | 0 restraints |
wR(F2) = 0.198 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.54 e Å−3 |
5002 reflections | Δρmin = −0.59 e Å−3 |
373 parameters |
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. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
F1 | 0.6041 (2) | 0.51552 (14) | 0.14890 (17) | 0.0702 (5) | |
F2 | 0.5633 (2) | 0.21345 (13) | 0.38653 (13) | 0.0626 (5) | |
O1 | 0.1693 (3) | −0.2597 (2) | −0.1643 (2) | 0.0873 (8) | |
O2 | 0.1665 (3) | −0.1195 (2) | −0.2795 (2) | 0.0762 (7) | |
H2 | 0.1948 | −0.0413 | −0.2670 | 0.114* | |
O3 | 0.3100 (2) | 0.1106 (2) | −0.17445 (17) | 0.0677 (6) | |
N1 | 0.4330 (2) | 0.01780 (17) | 0.16877 (19) | 0.0436 (5) | |
N2 | 0.6695 (3) | 0.46292 (19) | 0.3820 (2) | 0.0533 (6) | |
N3 | 0.8631 (2) | 0.67661 (19) | 0.58301 (19) | 0.0496 (5) | |
H3A | 0.9470 | 0.7498 | 0.6208 | 0.060* | |
H3B | 0.8207 | 0.6649 | 0.6352 | 0.060* | |
C1 | 0.3493 (3) | −0.0691 (2) | 0.0590 (2) | 0.0482 (6) | |
H1A | 0.3202 | −0.1545 | 0.0631 | 0.058* | |
C2 | 0.3035 (3) | −0.0441 (2) | −0.0569 (2) | 0.0495 (6) | |
C3 | 0.3465 (3) | 0.0821 (3) | −0.0690 (2) | 0.0485 (6) | |
C4 | 0.4355 (2) | 0.1778 (2) | 0.0492 (2) | 0.0418 (5) | |
C5 | 0.4789 (3) | 0.3043 (2) | 0.0451 (2) | 0.0478 (6) | |
H5A | 0.4542 | 0.3271 | −0.0338 | 0.057* | |
C6 | 0.5558 (3) | 0.3938 (2) | 0.1536 (2) | 0.0484 (6) | |
C7 | 0.5904 (3) | 0.3680 (2) | 0.2737 (2) | 0.0435 (5) | |
C8 | 0.5437 (3) | 0.2414 (2) | 0.2746 (2) | 0.0430 (5) | |
C9 | 0.4727 (2) | 0.1443 (2) | 0.1660 (2) | 0.0391 (5) | |
C10 | 0.6250 (3) | 0.5649 (3) | 0.3947 (3) | 0.0626 (8) | |
H10A | 0.5717 | 0.5482 | 0.4448 | 0.075* | |
H10B | 0.5562 | 0.5690 | 0.3098 | 0.075* | |
C11 | 0.7563 (3) | 0.6884 (2) | 0.4582 (3) | 0.0592 (7) | |
H11A | 0.8060 | 0.7051 | 0.4044 | 0.071* | |
C12 | 0.7179 (5) | 0.7965 (3) | 0.4768 (4) | 0.0860 (12) | |
H12A | 0.8083 | 0.8737 | 0.5171 | 0.129* | |
H12B | 0.6708 | 0.7830 | 0.5309 | 0.129* | |
H12C | 0.6495 | 0.8038 | 0.3946 | 0.129* | |
C13 | 0.9051 (3) | 0.5702 (3) | 0.5682 (3) | 0.0572 (7) | |
H13A | 0.9588 | 0.5861 | 0.5184 | 0.069* | |
H13B | 0.9723 | 0.5637 | 0.6526 | 0.069* | |
C14 | 0.7718 (3) | 0.4506 (2) | 0.5035 (3) | 0.0604 (8) | |
H14A | 0.8010 | 0.3818 | 0.4899 | 0.072* | |
H14B | 0.7229 | 0.4303 | 0.5567 | 0.072* | |
C15 | 0.4738 (3) | −0.0307 (2) | 0.2860 (3) | 0.0547 (6) | |
H15A | 0.5682 | 0.0326 | 0.3549 | 0.066* | |
H15B | 0.4897 | −0.1073 | 0.2707 | 0.066* | |
C16 | 0.3574 (4) | −0.0604 (3) | 0.3270 (3) | 0.0721 (9) | |
H16A | 0.3826 | −0.1023 | 0.3970 | 0.108* | |
H16B | 0.2612 | −0.1157 | 0.2559 | 0.108* | |
H16C | 0.3522 | 0.0173 | 0.3550 | 0.108* | |
C17 | 0.2083 (3) | −0.1516 (3) | −0.1695 (3) | 0.0635 (8) | |
O1B | 0.7431 (2) | 0.60714 (18) | 0.73716 (18) | 0.0620 (5) | |
O2B | 0.9064 (3) | 0.8637 (2) | 0.7905 (2) | 0.0755 (7) | |
O3B | 0.8490 (2) | 0.94720 (17) | 0.9138 (2) | 0.0563 (5) | |
O4B | 1.0085 (4) | 0.8183 (3) | 1.3141 (2) | 0.0968 (9) | |
O5B | 0.9630 (4) | 0.6231 (3) | 1.3095 (2) | 0.0926 (8) | |
O6A | 0.6327 (5) | 0.3366 (3) | 0.8566 (5) | 0.1035 (10) | 0.762 (4) |
O7A | 0.7909 (5) | 0.3882 (3) | 0.7890 (4) | 0.1035 (10) | 0.762 (4) |
O6B | 0.6273 (9) | 0.3566 (9) | 0.7639 (9) | 0.1035 (10) | 0.238 (4) |
O7B | 0.8257 (10) | 0.3560 (9) | 0.9080 (10) | 0.1035 (10) | 0.238 (4) |
N1B | 0.8724 (2) | 0.86209 (18) | 0.8747 (2) | 0.0466 (5) | |
N2B | 0.9639 (3) | 0.7109 (3) | 1.2577 (3) | 0.0683 (7) | |
N3B | 0.7447 (3) | 0.4116 (2) | 0.8604 (3) | 0.0675 (7) | |
C1B | 0.7998 (3) | 0.6332 (2) | 0.8548 (2) | 0.0476 (6) | |
C2B | 0.8633 (3) | 0.7566 (2) | 0.9345 (2) | 0.0443 (5) | |
C3B | 0.9121 (3) | 0.7818 (2) | 1.0621 (2) | 0.0482 (6) | |
H3BA | 0.9482 | 0.8649 | 1.1084 | 0.058* | |
C4B | 0.9077 (3) | 0.6843 (3) | 1.1220 (3) | 0.0544 (6) | |
C5B | 0.8520 (3) | 0.5620 (3) | 1.0552 (3) | 0.0593 (7) | |
H5BA | 0.8492 | 0.4953 | 1.0972 | 0.071* | |
C6B | 0.8019 (3) | 0.5399 (2) | 0.9289 (3) | 0.0544 (6) |
U11 | U22 | U33 | U12 | U13 | U23 | |
F1 | 0.0779 (11) | 0.0377 (8) | 0.0661 (10) | 0.0129 (8) | 0.0173 (9) | 0.0181 (7) |
F2 | 0.0898 (12) | 0.0390 (8) | 0.0360 (7) | 0.0139 (8) | 0.0201 (7) | 0.0050 (6) |
O1 | 0.0778 (16) | 0.0513 (13) | 0.0785 (16) | 0.0096 (11) | 0.0083 (12) | −0.0238 (11) |
O2 | 0.0637 (13) | 0.0804 (15) | 0.0460 (11) | 0.0075 (12) | 0.0134 (10) | −0.0153 (10) |
O3 | 0.0677 (13) | 0.0764 (14) | 0.0347 (9) | 0.0175 (11) | 0.0137 (9) | 0.0042 (9) |
N1 | 0.0435 (10) | 0.0321 (9) | 0.0418 (10) | 0.0140 (8) | 0.0110 (8) | 0.0012 (8) |
N2 | 0.0547 (12) | 0.0340 (10) | 0.0436 (11) | 0.0187 (9) | 0.0010 (9) | −0.0036 (8) |
N3 | 0.0522 (12) | 0.0372 (10) | 0.0396 (10) | 0.0137 (9) | 0.0098 (9) | −0.0036 (8) |
C1 | 0.0421 (12) | 0.0350 (11) | 0.0525 (14) | 0.0124 (10) | 0.0141 (11) | −0.0045 (10) |
C2 | 0.0391 (12) | 0.0476 (14) | 0.0442 (13) | 0.0125 (10) | 0.0111 (10) | −0.0091 (10) |
C3 | 0.0392 (12) | 0.0571 (15) | 0.0373 (12) | 0.0158 (11) | 0.0123 (10) | −0.0010 (10) |
C4 | 0.0376 (11) | 0.0427 (12) | 0.0350 (11) | 0.0142 (9) | 0.0111 (9) | 0.0023 (9) |
C5 | 0.0461 (13) | 0.0479 (13) | 0.0395 (12) | 0.0169 (11) | 0.0133 (10) | 0.0124 (10) |
C6 | 0.0460 (13) | 0.0344 (11) | 0.0507 (14) | 0.0123 (10) | 0.0139 (11) | 0.0123 (10) |
C7 | 0.0384 (11) | 0.0345 (11) | 0.0399 (12) | 0.0117 (9) | 0.0069 (9) | 0.0007 (9) |
C8 | 0.0448 (12) | 0.0368 (11) | 0.0331 (11) | 0.0127 (9) | 0.0098 (9) | 0.0037 (9) |
C9 | 0.0371 (11) | 0.0337 (11) | 0.0377 (11) | 0.0129 (9) | 0.0120 (9) | 0.0033 (9) |
C10 | 0.0559 (15) | 0.0452 (14) | 0.0604 (16) | 0.0235 (12) | 0.0049 (13) | −0.0038 (12) |
C11 | 0.0684 (17) | 0.0419 (13) | 0.0485 (14) | 0.0221 (13) | 0.0131 (13) | 0.0025 (11) |
C12 | 0.109 (3) | 0.0548 (18) | 0.071 (2) | 0.046 (2) | 0.015 (2) | 0.0017 (15) |
C13 | 0.0565 (15) | 0.0496 (14) | 0.0442 (13) | 0.0240 (12) | 0.0056 (11) | −0.0034 (11) |
C14 | 0.0648 (17) | 0.0407 (13) | 0.0462 (14) | 0.0229 (12) | 0.0017 (12) | −0.0015 (11) |
C15 | 0.0656 (16) | 0.0363 (12) | 0.0500 (14) | 0.0222 (12) | 0.0160 (12) | 0.0106 (10) |
C16 | 0.082 (2) | 0.0591 (17) | 0.0626 (18) | 0.0180 (16) | 0.0319 (17) | 0.0185 (14) |
C17 | 0.0458 (14) | 0.0654 (19) | 0.0528 (16) | 0.0132 (13) | 0.0113 (12) | −0.0158 (13) |
O1B | 0.0670 (12) | 0.0486 (10) | 0.0480 (10) | 0.0090 (9) | 0.0207 (9) | 0.0009 (8) |
O2B | 0.128 (2) | 0.0528 (12) | 0.0654 (13) | 0.0362 (13) | 0.0615 (14) | 0.0211 (10) |
O3B | 0.0553 (10) | 0.0428 (9) | 0.0721 (12) | 0.0245 (8) | 0.0280 (9) | 0.0123 (8) |
O4B | 0.126 (2) | 0.100 (2) | 0.0534 (13) | 0.0370 (18) | 0.0404 (15) | 0.0133 (13) |
O5B | 0.122 (2) | 0.119 (2) | 0.0731 (15) | 0.0732 (19) | 0.0545 (16) | 0.0567 (16) |
O6A | 0.123 (2) | 0.0541 (13) | 0.137 (3) | 0.0198 (13) | 0.080 (2) | 0.0015 (14) |
O7A | 0.123 (2) | 0.0541 (13) | 0.137 (3) | 0.0198 (13) | 0.080 (2) | 0.0015 (14) |
O6B | 0.123 (2) | 0.0541 (13) | 0.137 (3) | 0.0198 (13) | 0.080 (2) | 0.0015 (14) |
O7B | 0.123 (2) | 0.0541 (13) | 0.137 (3) | 0.0198 (13) | 0.080 (2) | 0.0015 (14) |
N1B | 0.0487 (11) | 0.0368 (10) | 0.0450 (11) | 0.0152 (9) | 0.0163 (9) | 0.0070 (8) |
N2B | 0.0743 (17) | 0.087 (2) | 0.0550 (14) | 0.0398 (15) | 0.0343 (13) | 0.0262 (14) |
N3B | 0.0766 (17) | 0.0369 (12) | 0.0908 (19) | 0.0209 (12) | 0.0430 (15) | 0.0145 (12) |
C1B | 0.0467 (13) | 0.0384 (12) | 0.0545 (14) | 0.0144 (10) | 0.0239 (11) | 0.0086 (10) |
C2B | 0.0450 (12) | 0.0389 (12) | 0.0475 (13) | 0.0167 (10) | 0.0208 (10) | 0.0114 (10) |
C3B | 0.0479 (13) | 0.0458 (13) | 0.0495 (13) | 0.0180 (11) | 0.0229 (11) | 0.0088 (10) |
C4B | 0.0588 (15) | 0.0616 (16) | 0.0507 (14) | 0.0279 (13) | 0.0291 (13) | 0.0209 (12) |
C5B | 0.0689 (17) | 0.0520 (15) | 0.0729 (19) | 0.0294 (14) | 0.0420 (15) | 0.0291 (14) |
C6B | 0.0562 (15) | 0.0409 (13) | 0.0667 (17) | 0.0184 (11) | 0.0306 (13) | 0.0138 (12) |
F1—C6 | 1.351 (3) | C12—H12B | 0.9800 |
F2—C8 | 1.348 (3) | C12—H12C | 0.9800 |
O1—C17 | 1.202 (4) | C13—C14 | 1.485 (4) |
O2—C17 | 1.323 (4) | C13—H13A | 0.9900 |
O2—H2 | 0.8400 | C13—H13B | 0.9900 |
O3—C3 | 1.258 (3) | C14—H14A | 0.9900 |
N1—C1 | 1.343 (3) | C14—H14B | 0.9900 |
N1—C9 | 1.397 (3) | C15—C16 | 1.499 (5) |
N1—C15 | 1.492 (3) | C15—H15A | 0.9900 |
N2—C7 | 1.381 (3) | C15—H15B | 0.9900 |
N2—C10 | 1.455 (3) | C16—H16A | 0.9800 |
N2—C14 | 1.460 (3) | C16—H16B | 0.9800 |
N3—C13 | 1.490 (3) | C16—H16C | 0.9800 |
N3—C11 | 1.504 (3) | O1B—C1B | 1.248 (3) |
N3—H3A | 0.9200 | O2B—N1B | 1.221 (3) |
N3—H3B | 0.9200 | O3B—N1B | 1.226 (3) |
C1—C2 | 1.351 (4) | O4B—N2B | 1.218 (4) |
C1—H1A | 0.9500 | O5B—N2B | 1.227 (4) |
C2—C3 | 1.422 (4) | O6A—N3B | 1.219 (3) |
C2—C17 | 1.489 (3) | O7A—N3B | 1.2298 (19) |
C3—C4 | 1.459 (3) | O6B—N3B | 1.219 (5) |
C4—C5 | 1.400 (4) | O7B—N3B | 1.234 (2) |
C4—C9 | 1.405 (3) | N1B—C2B | 1.455 (3) |
C5—C6 | 1.350 (4) | N2B—C4B | 1.449 (4) |
C5—H5A | 0.9500 | N3B—C6B | 1.451 (3) |
C6—C7 | 1.407 (4) | C1B—C2B | 1.443 (3) |
C7—C8 | 1.392 (3) | C1B—C6B | 1.444 (4) |
C8—C9 | 1.405 (3) | C2B—C3B | 1.370 (4) |
C10—C11 | 1.503 (4) | C3B—C4B | 1.377 (4) |
C10—H10A | 0.9900 | C3B—H3BA | 0.9500 |
C10—H10B | 0.9900 | C4B—C5B | 1.388 (4) |
C11—C12 | 1.493 (4) | C5B—C6B | 1.351 (4) |
C11—H11A | 1.0000 | C5B—H5BA | 0.9500 |
C12—H12A | 0.9800 | ||
C17—O2—H2 | 109.5 | C14—C13—N3 | 110.8 (2) |
C1—N1—C9 | 119.0 (2) | C14—C13—H13A | 109.5 |
C1—N1—C15 | 116.0 (2) | N3—C13—H13A | 109.5 |
C9—N1—C15 | 125.02 (19) | C14—C13—H13B | 109.5 |
C7—N2—C10 | 121.8 (2) | N3—C13—H13B | 109.5 |
C7—N2—C14 | 122.7 (2) | H13A—C13—H13B | 108.1 |
C10—N2—C14 | 112.8 (2) | N2—C14—C13 | 109.3 (2) |
C13—N3—C11 | 112.07 (19) | N2—C14—H14A | 109.8 |
C13—N3—H3A | 109.2 | C13—C14—H14A | 109.8 |
C11—N3—H3A | 109.2 | N2—C14—H14B | 109.8 |
C13—N3—H3B | 109.2 | C13—C14—H14B | 109.8 |
C11—N3—H3B | 109.2 | H14A—C14—H14B | 108.3 |
H3A—N3—H3B | 107.9 | N1—C15—C16 | 112.5 (2) |
N1—C1—C2 | 124.9 (2) | N1—C15—H15A | 109.1 |
N1—C1—H1A | 117.5 | C16—C15—H15A | 109.1 |
C2—C1—H1A | 117.5 | N1—C15—H15B | 109.1 |
C1—C2—C3 | 120.0 (2) | C16—C15—H15B | 109.1 |
C1—C2—C17 | 118.2 (3) | H15A—C15—H15B | 107.8 |
C3—C2—C17 | 121.8 (3) | C15—C16—H16A | 109.5 |
O3—C3—C2 | 122.7 (2) | C15—C16—H16B | 109.5 |
O3—C3—C4 | 121.5 (3) | H16A—C16—H16B | 109.5 |
C2—C3—C4 | 115.8 (2) | C15—C16—H16C | 109.5 |
C5—C4—C9 | 120.0 (2) | H16A—C16—H16C | 109.5 |
C5—C4—C3 | 119.2 (2) | H16B—C16—H16C | 109.5 |
C9—C4—C3 | 120.7 (2) | O1—C17—O2 | 121.1 (3) |
C6—C5—C4 | 119.9 (2) | O1—C17—C2 | 124.3 (3) |
C6—C5—H5A | 120.1 | O2—C17—C2 | 114.5 (3) |
C4—C5—H5A | 120.1 | O2B—N1B—O3B | 122.9 (2) |
C5—C6—F1 | 119.3 (2) | O2B—N1B—C2B | 118.9 (2) |
C5—C6—C7 | 123.6 (2) | O3B—N1B—C2B | 118.1 (2) |
F1—C6—C7 | 117.2 (2) | O4B—N2B—O5B | 123.5 (3) |
N2—C7—C8 | 123.3 (2) | O4B—N2B—C4B | 118.7 (3) |
N2—C7—C6 | 121.4 (2) | O5B—N2B—C4B | 117.9 (3) |
C8—C7—C6 | 115.2 (2) | O6A—N3B—O7A | 121.6 (3) |
F2—C8—C7 | 116.6 (2) | O6B—N3B—O7B | 119.2 (6) |
F2—C8—C9 | 119.6 (2) | O6B—N3B—C6B | 126.3 (5) |
C7—C8—C9 | 123.8 (2) | O6A—N3B—C6B | 117.5 (3) |
N1—C9—C4 | 119.3 (2) | O7A—N3B—C6B | 119.2 (3) |
N1—C9—C8 | 123.4 (2) | O7B—N3B—C6B | 114.5 (5) |
C4—C9—C8 | 117.2 (2) | O1B—C1B—C2B | 125.8 (2) |
N2—C10—C11 | 111.5 (2) | O1B—C1B—C6B | 123.3 (2) |
N2—C10—H10A | 109.3 | C2B—C1B—C6B | 110.8 (2) |
C11—C10—H10A | 109.3 | C3B—C2B—C1B | 124.9 (2) |
N2—C10—H10B | 109.3 | C3B—C2B—N1B | 117.3 (2) |
C11—C10—H10B | 109.3 | C1B—C2B—N1B | 117.8 (2) |
H10A—C10—H10B | 108.0 | C2B—C3B—C4B | 118.7 (2) |
C12—C11—C10 | 114.0 (3) | C2B—C3B—H3BA | 120.7 |
C12—C11—N3 | 110.5 (2) | C4B—C3B—H3BA | 120.7 |
C10—C11—N3 | 108.1 (2) | C3B—C4B—C5B | 121.3 (3) |
C12—C11—H11A | 108.0 | C3B—C4B—N2B | 119.0 (3) |
C10—C11—H11A | 108.0 | C5B—C4B—N2B | 119.7 (3) |
N3—C11—H11A | 108.0 | C6B—C5B—C4B | 118.5 (3) |
C11—C12—H12A | 109.5 | C6B—C5B—H5BA | 120.7 |
C11—C12—H12B | 109.5 | C4B—C5B—H5BA | 120.7 |
H12A—C12—H12B | 109.5 | C5B—C6B—C1B | 125.7 (3) |
C11—C12—H12C | 109.5 | C5B—C6B—N3B | 117.9 (3) |
H12A—C12—H12C | 109.5 | C1B—C6B—N3B | 116.4 (3) |
H12B—C12—H12C | 109.5 | ||
C9—N1—C1—C2 | 2.6 (4) | C13—N3—C11—C12 | −179.5 (3) |
C15—N1—C1—C2 | −178.6 (2) | C13—N3—C11—C10 | 55.1 (3) |
N1—C1—C2—C3 | 1.4 (4) | C11—N3—C13—C14 | −57.0 (3) |
N1—C1—C2—C17 | −178.7 (2) | C7—N2—C14—C13 | 140.2 (3) |
C1—C2—C3—O3 | 178.3 (2) | C10—N2—C14—C13 | −57.9 (4) |
C17—C2—C3—O3 | −1.6 (4) | N3—C13—C14—N2 | 56.2 (3) |
C1—C2—C3—C4 | −2.2 (4) | C1—N1—C15—C16 | −85.8 (3) |
C17—C2—C3—C4 | 177.9 (2) | C9—N1—C15—C16 | 92.9 (3) |
O3—C3—C4—C5 | 1.2 (4) | C1—C2—C17—O1 | −0.1 (4) |
C2—C3—C4—C5 | −178.3 (2) | C3—C2—C17—O1 | 179.8 (3) |
O3—C3—C4—C9 | 178.6 (2) | C1—C2—C17—O2 | 179.2 (3) |
C2—C3—C4—C9 | −0.9 (3) | C3—C2—C17—O2 | −0.9 (4) |
C9—C4—C5—C6 | −0.3 (4) | O1B—C1B—C2B—C3B | 173.3 (3) |
C3—C4—C5—C6 | 177.1 (2) | C6B—C1B—C2B—C3B | −3.2 (4) |
C4—C5—C6—F1 | 176.3 (2) | O1B—C1B—C2B—N1B | −4.6 (4) |
C4—C5—C6—C7 | −3.2 (4) | C6B—C1B—C2B—N1B | 178.8 (2) |
C10—N2—C7—C8 | −129.4 (3) | O2B—N1B—C2B—C3B | 142.1 (3) |
C14—N2—C7—C8 | 30.8 (4) | O3B—N1B—C2B—C3B | −36.0 (3) |
C10—N2—C7—C6 | 52.8 (4) | O2B—N1B—C2B—C1B | −39.8 (3) |
C14—N2—C7—C6 | −146.9 (3) | O3B—N1B—C2B—C1B | 142.1 (2) |
C5—C6—C7—N2 | 180.0 (2) | C1B—C2B—C3B—C4B | 3.3 (4) |
F1—C6—C7—N2 | 0.4 (4) | N1B—C2B—C3B—C4B | −178.8 (2) |
C5—C6—C7—C8 | 2.0 (4) | C2B—C3B—C4B—C5B | −1.6 (4) |
F1—C6—C7—C8 | −177.5 (2) | C2B—C3B—C4B—N2B | 177.8 (2) |
N2—C7—C8—F2 | 8.0 (4) | O4B—N2B—C4B—C3B | 2.6 (4) |
C6—C7—C8—F2 | −174.1 (2) | O5B—N2B—C4B—C3B | −177.9 (3) |
N2—C7—C8—C9 | −175.2 (2) | O4B—N2B—C4B—C5B | −178.0 (3) |
C6—C7—C8—C9 | 2.7 (4) | O5B—N2B—C4B—C5B | 1.6 (4) |
C1—N1—C9—C4 | −5.6 (3) | C3B—C4B—C5B—C6B | 0.2 (4) |
C15—N1—C9—C4 | 175.7 (2) | N2B—C4B—C5B—C6B | −179.2 (3) |
C1—N1—C9—C8 | 171.8 (2) | C4B—C5B—C6B—C1B | −0.4 (5) |
C15—N1—C9—C8 | −6.9 (4) | C4B—C5B—C6B—N3B | 179.7 (3) |
C5—C4—C9—N1 | −177.8 (2) | O1B—C1B—C6B—C5B | −174.9 (3) |
C3—C4—C9—N1 | 4.8 (3) | C2B—C1B—C6B—C5B | 1.8 (4) |
C5—C4—C9—C8 | 4.6 (3) | O1B—C1B—C6B—N3B | 5.0 (4) |
C3—C4—C9—C8 | −172.8 (2) | C2B—C1B—C6B—N3B | −178.3 (2) |
F2—C8—C9—N1 | −6.6 (4) | O6B—N3B—C6B—C5B | 130.8 (9) |
C7—C8—C9—N1 | 176.6 (2) | O6A—N3B—C6B—C5B | 65.1 (5) |
F2—C8—C9—C4 | 170.8 (2) | O7A—N3B—C6B—C5B | −129.3 (4) |
C7—C8—C9—C4 | −5.9 (4) | O7B—N3B—C6B—C5B | −48.8 (7) |
C7—N2—C10—C11 | −139.1 (3) | O6B—N3B—C6B—C1B | −49.1 (9) |
C14—N2—C10—C11 | 58.8 (4) | O6A—N3B—C6B—C1B | −114.8 (4) |
N2—C10—C11—C12 | −178.6 (3) | O7A—N3B—C6B—C1B | 50.8 (5) |
N2—C10—C11—N3 | −55.3 (3) | O7B—N3B—C6B—C1B | 131.3 (7) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O3 | 0.84 | 1.74 | 2.520 (3) | 153 |
N3—H3A···O2i | 0.92 | 2.09 | 2.984 (3) | 164 |
N3—H3B···O1B | 0.92 | 1.81 | 2.714 (3) | 166 |
N3—H3B···O2B | 0.92 | 2.52 | 2.993 (3) | 113 |
Symmetry code: (i) x+1, y+1, z+1. |
Experimental details
Crystal data | |
Chemical formula | C17H20F2N3O3+·C6H2N3O7− |
Mr | 580.47 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 123 |
a, b, c (Å) | 10.9314 (4), 11.6748 (4), 12.0530 (4) |
α, β, γ (°) | 92.969 (3), 115.555 (3), 109.852 (3) |
V (Å3) | 1269.14 (8) |
Z | 2 |
Radiation type | Cu Kα |
µ (mm−1) | 1.13 |
Crystal size (mm) | 0.44 × 0.33 × 0.19 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Ruby Gemini diffractometer |
Absorption correction | Multi-scan (CrysAlis RED; Oxford Diffraction, 2007) |
Tmin, Tmax | 0.838, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8890, 5002, 4423 |
Rint | 0.018 |
(sin θ/λ)max (Å−1) | 0.623 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.068, 0.198, 1.06 |
No. of reflections | 5002 |
No. of parameters | 373 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.54, −0.59 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2007), CrysAlis RED (Oxford Diffraction, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O3 | 0.84 | 1.74 | 2.520 (3) | 153 |
N3—H3A···O2i | 0.92 | 2.09 | 2.984 (3) | 164 |
N3—H3B···O1B | 0.92 | 1.81 | 2.714 (3) | 166 |
N3—H3B···O2B | 0.92 | 2.52 | 2.993 (3) | 113 |
Symmetry code: (i) x+1, y+1, z+1. |
CgI···CgJ | Cg···Cg (Å) | CgI Perp (Å) | Cgj Perp (Å) | Slippage (Å) |
Cg1···Cg1i | 3.6460 (14) | 3.3385 (10) | 3.3385 (10) | 1.46 (6) |
Lomefloxacin hydrochloride is a fluoroquinolone antibiotic used to treat bacterial infections including bronchitis and urinary tract infections. It is also used to prevent urinary tract infections prior to surgery. Lomefloxacin, chemically (RS)-1-ethyl-6,8-difluoro-7-(3-methylpiperazin- 1-yl)-4-oxo-quinoline-3-carboxylic acid, is associated with phototoxicity and adverse central nervous system adverse effects (Rubinstein et al., 2001). Recently, the crystal structures of propiverine picrate (Jasinski et al., 2009), imatinibium dipicrate (Jasinski et al., 2010a) and chlorimipraminium picrate (Jasinski et al., 2010b) have been reported. In continuation of our work on picrates of biologically active compounds, this paper reports the crystal structure of (I), obtained by the interaction of picric acid and lomefloxacin.
In the crystal structure of the title compound, there is one cation-anion pair in the asymmetric unit (Fig. 1). One N atom in the 6-membered piperazine ring (N2/C10/C11/N3/C13/C14) in the lomefloxacinium cation is protonated which adopts a slightly distorted chair conformation with puckering parameters Q, θ and ϕ of 0.565 (3) Å, 178.0 (3)° and 109 (58)° (Cremer & Pople, 1975). The dihedral angle between the mean planes of the piperazine ring (N2/C10/C11/N3/C13/C14) and the 10-atom ring system of the quinolone group is 43.3 (5)°. The picrate anion interacts with the protonated N atom of an adjacent cation through a bifurcated N—H···O three-center hydrogen bond. The dihedral angle between the mean planes of the anion benzene and cation piperizine and quinoline rings is 46.2 (9)° and 7.2 (2)°, respectively. The mean planes of the two o-NO2 and single p-NO2 groups in the picrate anion are twisted by, 37.9 (5)°, 57.0 (8)° [using predominant component (0.743 (4), O6A & O7A, of disordered O atoms] and 2.5 (1)° with respect to the mean planes of the 6-membered benzene ring. Bond distances (Allen et al., 1987) and angles are in normal ranges. Strong N—H···O hydrogen bonds in concert with weak π–π stacking interactions (Table 2) dominate the crystal packing creating a 2-D network along [011] (Fig. 2).