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The crystal structure of the title compound, C16H11F3N4O5, contains two aromatic rings, which are bridged by a C=N unit. The mol­ecular structure is stabilized by intra­molecular N—H...O hydrogen bonds. The chains are linked through weak inter­molecular interactions, resulting in a zigzag packing arrangement.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807028747/at2327sup1.cif
Contains datablocks I, global

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S1600536807028747/at2327Isup2.hkl
Contains datablock I

CCDC reference: 654947

Key indicators

  • Single-crystal X-ray study
  • T = 294 K
  • Mean [sigma](C-C) = 0.003 Å
  • R factor = 0.040
  • wR factor = 0.118
  • Data-to-parameter ratio = 13.6

checkCIF/PLATON results

No syntax errors found



Alert level C PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical . ? PLAT230_ALERT_2_C Hirshfeld Test Diff for O2 - N3 .. 5.01 su PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C10 PLAT431_ALERT_2_C Short Inter HL..A Contact F1 .. O2 .. 2.90 Ang.
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 4 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 3 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 0 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check

Comment top

In order to establish control over the preparation of crystalline solid materials so that their architecture and properties are predictable (Belloni et al., 2005; Tynan et al., 2005; Parashar et al., 1988), the synthesis of new and designed crystal structures has become a major strand of modern chemistry. Metal complexes based on Schiff bases have attracted much attention because they can be utilized as model compounds of active centres in various proteins and enzymes (Kahwa et al., 1986; Santos et al., 2001). As part of an investigation of the coordination properties of Shiff bases functioning as ligands, we report the synthesis and structure of the title compound, (I). In the molecular structure of the title compound, (I) (Fig. 1), the expected geometric parameters are observed.

The 4,4,4-trifluoro-1-phenyl-butane-1,3-dione ring system (C1—C6) is planar, with an r.m.s. deviation for the fitted atoms of 0.0023 (4) Å, as are the (2,4-dinitro-phenyl)-hydrazine group (C11—C16), with an r.m.s. deviation of 0.0150 (3) Å, and the dihedral angles formed between these planes is 82.74 (6)°. Intramolecular N—H···O hydrogen bond stabilizes the molecular conformation, and the molecules are linked via weak intermolecular N—H···O hydrogen bonds to forming a zigzag packing arrangement.

Related literature top

For general background, see: Belloni et al. (2005); Kahwa et al. (1986); Parashar et al. (1988); Santos et al. (2001); Tynan et al. (2005).

Experimental top

An anhydrous ethanol solution (50 ml) of 4,4,4-trifluoro-1-phenyl- butane-1,3-dione (2.16 g, 10 mmol) was added to an anhydrous ethanol solution (50 ml) of (2,4-dinitro-phenyl)-hydrazine (1.98 g, 10 mmol) and the mixture was stirred at 350 K for 6 h under N2, whereupon a red solution appeared. The solvent was removed and the residue recrystallized from anhydrous ethanol. The product was isolated and then dried in vacuo to give pure (I) in 84% yield. Red single crystals suitable for X-ray analysis were obtained by slow evaporation of an anhydrous ethanol solution of (I).

Refinement top

The N-bound H atom was located in a difference Fourier map and were refined with Uiso(H) = 1.2Ueq(N). C-bound H atoms were included in calculated positions, with C—H = 0.93 (aromatic) or 0.97 Å (methylene), and refined using a riding model, with Uiso(H) = 1.2Ueq(C).

Structure description top

In order to establish control over the preparation of crystalline solid materials so that their architecture and properties are predictable (Belloni et al., 2005; Tynan et al., 2005; Parashar et al., 1988), the synthesis of new and designed crystal structures has become a major strand of modern chemistry. Metal complexes based on Schiff bases have attracted much attention because they can be utilized as model compounds of active centres in various proteins and enzymes (Kahwa et al., 1986; Santos et al., 2001). As part of an investigation of the coordination properties of Shiff bases functioning as ligands, we report the synthesis and structure of the title compound, (I). In the molecular structure of the title compound, (I) (Fig. 1), the expected geometric parameters are observed.

The 4,4,4-trifluoro-1-phenyl-butane-1,3-dione ring system (C1—C6) is planar, with an r.m.s. deviation for the fitted atoms of 0.0023 (4) Å, as are the (2,4-dinitro-phenyl)-hydrazine group (C11—C16), with an r.m.s. deviation of 0.0150 (3) Å, and the dihedral angles formed between these planes is 82.74 (6)°. Intramolecular N—H···O hydrogen bond stabilizes the molecular conformation, and the molecules are linked via weak intermolecular N—H···O hydrogen bonds to forming a zigzag packing arrangement.

For general background, see: Belloni et al. (2005); Kahwa et al. (1986); Parashar et al. (1988); Santos et al. (2001); Tynan et al. (2005).

Computing details top

Data collection: SMART (Bruker, 1999); cell refinement: SAINT (Bruker, 1999); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1997); software used to prepare material for publication: SHELXTL.

Figures top
[Figure 1] Fig. 1. The molecular structure of (I) with displacement ellipsoids drawn at the 30% probability level.
[Figure 2] Fig. 2. Packing view of (I), showing the intermolecular hydrogen bonds (dashed lines).
3-[(2,4-Dinitrophenyl)hydrazono]-4,4,4-trifluoro-1-phenylbutan-1-one top
Crystal data top
C16H11F3N4O5F(000) = 808
Mr = 396.29Dx = 1.558 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ynCell parameters from 2407 reflections
a = 12.670 (2) Åθ = 2.7–23.2°
b = 8.8499 (14) ŵ = 0.14 mm1
c = 15.846 (3) ÅT = 294 K
β = 108.080 (3)°Block, red
V = 1689.0 (5) Å30.22 × 0.20 × 0.16 mm
Z = 4
Data collection top
Bruker SMART CCD area-detector
diffractometer
3451 independent reflections
Radiation source: fine-focus sealed tube2112 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.031
φ and ω scansθmax = 26.4°, θmin = 1.8°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
h = 1315
Tmin = 0.970, Tmax = 0.978k = 1110
9400 measured reflectionsl = 1913
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.040Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.118H-atom parameters constrained
S = 0.98 w = 1/[σ2(Fo2) + (0.0539P)2 + 0.2886P]
where P = (Fo2 + 2Fc2)/3
3451 reflections(Δ/σ)max = 0.001
253 parametersΔρmax = 0.17 e Å3
0 restraintsΔρmin = 0.19 e Å3
Crystal data top
C16H11F3N4O5V = 1689.0 (5) Å3
Mr = 396.29Z = 4
Monoclinic, P21/nMo Kα radiation
a = 12.670 (2) ŵ = 0.14 mm1
b = 8.8499 (14) ÅT = 294 K
c = 15.846 (3) Å0.22 × 0.20 × 0.16 mm
β = 108.080 (3)°
Data collection top
Bruker SMART CCD area-detector
diffractometer
3451 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
2112 reflections with I > 2σ(I)
Tmin = 0.970, Tmax = 0.978Rint = 0.031
9400 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0400 restraints
wR(F2) = 0.118H-atom parameters constrained
S = 0.98Δρmax = 0.17 e Å3
3451 reflectionsΔρmin = 0.19 e Å3
253 parameters
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
xyzUiso*/Ueq
F10.52280 (12)0.60190 (15)0.76335 (10)0.0816 (5)
F20.41425 (12)0.78857 (19)0.72284 (12)0.1009 (6)
F30.46161 (13)0.71459 (19)0.85655 (11)0.1002 (6)
O10.79723 (12)0.77365 (17)0.77580 (10)0.0630 (4)
O20.90737 (12)1.09368 (18)0.89456 (11)0.0637 (4)
O31.00769 (13)1.2392 (2)0.99578 (12)0.0780 (5)
O40.92171 (15)1.3453 (2)1.25985 (12)0.0799 (5)
O50.83158 (16)1.1765 (2)1.30921 (11)0.0870 (6)
N10.64300 (13)0.86642 (18)0.89153 (11)0.0476 (4)
N20.73460 (13)0.95719 (18)0.91460 (11)0.0497 (4)
H20.76830.97820.87660.060*
N30.93045 (14)1.1511 (2)0.96872 (12)0.0515 (4)
N40.86534 (16)1.2290 (2)1.25123 (13)0.0619 (5)
C10.84995 (17)0.8257 (2)0.61940 (15)0.0527 (5)
H10.89280.75630.65970.063*
C20.8773 (2)0.8615 (3)0.54414 (16)0.0668 (7)
H2A0.93780.81540.53340.080*
C30.8150 (2)0.9655 (3)0.48503 (17)0.0743 (7)
H30.83380.99000.43450.089*
C40.7249 (2)1.0337 (3)0.50012 (15)0.0693 (7)
H40.68321.10420.45990.083*
C50.69638 (19)0.9972 (2)0.57511 (14)0.0558 (5)
H50.63521.04290.58500.067*
C60.75850 (15)0.8929 (2)0.63559 (13)0.0439 (5)
C70.73331 (16)0.8507 (2)0.71830 (13)0.0439 (5)
C80.62590 (16)0.9075 (2)0.73105 (13)0.0458 (5)
H8A0.63091.01640.73800.055*
H8B0.56540.88610.67740.055*
C90.59704 (16)0.8416 (2)0.80879 (14)0.0450 (5)
C100.49893 (19)0.7371 (3)0.78885 (16)0.0568 (6)
C110.77211 (15)1.0141 (2)0.99852 (12)0.0433 (5)
C120.86413 (15)1.1134 (2)1.02618 (13)0.0435 (5)
C130.89433 (16)1.1825 (2)1.10864 (13)0.0474 (5)
H130.95371.24961.12500.057*
C140.83583 (17)1.1508 (2)1.16547 (13)0.0482 (5)
C150.74946 (18)1.0470 (2)1.14354 (14)0.0536 (5)
H150.71351.02221.18470.064*
C160.71734 (18)0.9813 (2)1.06135 (14)0.0518 (5)
H160.65820.91371.04670.062*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
F10.0895 (10)0.0567 (8)0.1060 (12)0.0184 (7)0.0410 (9)0.0213 (8)
F20.0541 (9)0.1086 (12)0.1215 (14)0.0132 (8)0.0002 (9)0.0215 (10)
F30.0975 (11)0.1294 (13)0.0980 (12)0.0536 (10)0.0659 (10)0.0294 (10)
O10.0653 (10)0.0730 (10)0.0542 (9)0.0225 (8)0.0235 (8)0.0121 (8)
O20.0675 (10)0.0758 (11)0.0578 (10)0.0087 (8)0.0342 (9)0.0039 (8)
O30.0616 (10)0.0989 (13)0.0766 (12)0.0297 (10)0.0259 (9)0.0022 (10)
O40.0753 (11)0.0800 (12)0.0771 (12)0.0021 (10)0.0130 (9)0.0242 (10)
O50.0947 (13)0.1202 (16)0.0483 (10)0.0047 (11)0.0251 (10)0.0046 (10)
N10.0494 (10)0.0469 (10)0.0513 (11)0.0034 (8)0.0226 (9)0.0026 (8)
N20.0531 (10)0.0553 (10)0.0455 (10)0.0096 (8)0.0222 (8)0.0023 (8)
N30.0457 (10)0.0551 (11)0.0560 (12)0.0005 (9)0.0191 (9)0.0110 (9)
N40.0583 (12)0.0754 (14)0.0483 (12)0.0172 (11)0.0113 (10)0.0016 (11)
C10.0468 (12)0.0590 (13)0.0552 (13)0.0029 (10)0.0198 (10)0.0034 (11)
C20.0639 (15)0.0778 (17)0.0712 (17)0.0067 (13)0.0390 (13)0.0081 (14)
C30.0924 (19)0.0799 (18)0.0636 (16)0.0149 (15)0.0434 (15)0.0004 (14)
C40.0914 (18)0.0643 (15)0.0580 (15)0.0050 (13)0.0318 (14)0.0112 (12)
C50.0642 (14)0.0529 (12)0.0528 (13)0.0058 (11)0.0219 (11)0.0007 (11)
C60.0462 (11)0.0414 (10)0.0456 (11)0.0060 (9)0.0167 (9)0.0055 (9)
C70.0492 (11)0.0385 (10)0.0457 (12)0.0003 (9)0.0171 (10)0.0039 (9)
C80.0470 (11)0.0447 (11)0.0470 (12)0.0034 (9)0.0168 (9)0.0010 (9)
C90.0455 (11)0.0427 (11)0.0520 (13)0.0019 (9)0.0227 (10)0.0017 (9)
C100.0562 (13)0.0592 (14)0.0601 (14)0.0081 (11)0.0254 (12)0.0046 (11)
C110.0466 (11)0.0439 (11)0.0411 (11)0.0039 (9)0.0162 (9)0.0046 (9)
C120.0421 (10)0.0458 (11)0.0440 (11)0.0047 (9)0.0156 (9)0.0080 (9)
C130.0415 (11)0.0485 (12)0.0483 (12)0.0048 (9)0.0084 (9)0.0047 (10)
C140.0489 (12)0.0512 (12)0.0423 (12)0.0092 (10)0.0109 (10)0.0024 (10)
C150.0613 (13)0.0597 (13)0.0463 (12)0.0061 (11)0.0262 (11)0.0092 (10)
C160.0562 (12)0.0526 (12)0.0515 (13)0.0067 (10)0.0237 (10)0.0037 (10)
Geometric parameters (Å, º) top
F1—C101.328 (3)C3—H30.9300
F2—C101.325 (3)C4—C51.383 (3)
F3—C101.315 (2)C4—H40.9300
O1—C71.222 (2)C5—C61.386 (3)
O2—N31.229 (2)C5—H50.9300
O3—N31.221 (2)C6—C71.490 (3)
O4—N41.235 (2)C7—C81.522 (3)
O5—N41.220 (2)C8—C91.507 (3)
N1—C91.278 (2)C8—H8A0.9700
N1—N21.365 (2)C8—H8B0.9700
N2—C111.362 (2)C9—C101.502 (3)
N2—H20.8600C11—C161.409 (3)
N3—C121.456 (2)C11—C121.417 (3)
N4—C141.466 (3)C12—C131.385 (3)
C1—C21.378 (3)C13—C141.361 (3)
C1—C61.395 (3)C13—H130.9300
C1—H10.9300C14—C151.388 (3)
C2—C31.374 (3)C15—C161.368 (3)
C2—H2A0.9300C15—H150.9300
C3—C41.375 (3)C16—H160.9300
C9—N1—N2117.07 (16)C9—C8—H8A108.3
C11—N2—N1119.28 (16)C7—C8—H8A108.3
C11—N2—H2120.4C9—C8—H8B108.3
N1—N2—H2120.4C7—C8—H8B108.3
O3—N3—O2121.79 (17)H8A—C8—H8B107.4
O3—N3—C12118.81 (19)N1—C9—C10113.94 (18)
O2—N3—C12119.40 (17)N1—C9—C8128.54 (18)
O5—N4—O4124.1 (2)C10—C9—C8117.47 (18)
O5—N4—C14118.0 (2)F3—C10—F2106.75 (19)
O4—N4—C14117.9 (2)F3—C10—F1106.58 (19)
C2—C1—C6120.5 (2)F2—C10—F1105.94 (19)
C2—C1—H1119.8F3—C10—C9113.91 (19)
C6—C1—H1119.8F2—C10—C9111.65 (18)
C3—C2—C1119.9 (2)F1—C10—C9111.53 (18)
C3—C2—H2A120.0N2—C11—C16120.96 (18)
C1—C2—H2A120.0N2—C11—C12122.39 (17)
C2—C3—C4120.5 (2)C16—C11—C12116.59 (18)
C2—C3—H3119.8C13—C12—C11121.73 (18)
C4—C3—H3119.8C13—C12—N3116.41 (18)
C3—C4—C5119.9 (2)C11—C12—N3121.84 (18)
C3—C4—H4120.0C14—C13—C12119.04 (19)
C5—C4—H4120.0C14—C13—H13120.5
C4—C5—C6120.4 (2)C12—C13—H13120.5
C4—C5—H5119.8C13—C14—C15121.31 (19)
C6—C5—H5119.8C13—C14—N4118.8 (2)
C5—C6—C1118.84 (19)C15—C14—N4119.93 (19)
C5—C6—C7122.99 (18)C16—C15—C14119.89 (19)
C1—C6—C7118.16 (18)C16—C15—H15120.1
O1—C7—C6121.51 (17)C14—C15—H15120.1
O1—C7—C8119.90 (17)C15—C16—C11121.3 (2)
C6—C7—C8118.58 (17)C15—C16—H16119.4
C9—C8—C7115.74 (16)C11—C16—H16119.4
C9—N1—N2—C11165.70 (17)C8—C9—C10—F175.6 (2)
C6—C1—C2—C30.8 (3)N1—N2—C11—C160.4 (3)
C1—C2—C3—C40.4 (4)N1—N2—C11—C12177.63 (16)
C2—C3—C4—C50.2 (4)N2—C11—C12—C13173.26 (17)
C3—C4—C5—C60.4 (4)C16—C11—C12—C134.1 (3)
C4—C5—C6—C10.0 (3)N2—C11—C12—N35.3 (3)
C4—C5—C6—C7178.9 (2)C16—C11—C12—N3177.36 (17)
C2—C1—C6—C50.6 (3)O3—N3—C12—C130.2 (3)
C2—C1—C6—C7179.60 (19)O2—N3—C12—C13179.73 (17)
C5—C6—C7—O1170.44 (19)O3—N3—C12—C11178.87 (18)
C1—C6—C7—O18.5 (3)O2—N3—C12—C111.1 (3)
C5—C6—C7—C88.7 (3)C11—C12—C13—C141.8 (3)
C1—C6—C7—C8172.37 (17)N3—C12—C13—C14179.53 (17)
O1—C7—C8—C99.9 (3)C12—C13—C14—C152.3 (3)
C6—C7—C8—C9170.94 (17)C12—C13—C14—N4177.54 (17)
N2—N1—C9—C10178.27 (16)O5—N4—C14—C13163.28 (19)
N2—N1—C9—C84.3 (3)O4—N4—C14—C1317.7 (3)
C7—C8—C9—N171.9 (3)O5—N4—C14—C1516.9 (3)
C7—C8—C9—C10110.8 (2)O4—N4—C14—C15162.20 (19)
N1—C9—C10—F314.0 (3)C13—C14—C15—C164.0 (3)
C8—C9—C10—F3163.70 (18)N4—C14—C15—C16175.84 (19)
N1—C9—C10—F2135.0 (2)C14—C15—C16—C111.5 (3)
C8—C9—C10—F242.7 (3)N2—C11—C16—C15175.03 (18)
N1—C9—C10—F1106.7 (2)C12—C11—C16—C152.3 (3)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N2—H2···O20.861.982.604 (2)129
N2—H2···O10.862.523.031 (2)119

Experimental details

Crystal data
Chemical formulaC16H11F3N4O5
Mr396.29
Crystal system, space groupMonoclinic, P21/n
Temperature (K)294
a, b, c (Å)12.670 (2), 8.8499 (14), 15.846 (3)
β (°) 108.080 (3)
V3)1689.0 (5)
Z4
Radiation typeMo Kα
µ (mm1)0.14
Crystal size (mm)0.22 × 0.20 × 0.16
Data collection
DiffractometerBruker SMART CCD area-detector
Absorption correctionMulti-scan
(SADABS; Sheldrick, 1996)
Tmin, Tmax0.970, 0.978
No. of measured, independent and
observed [I > 2σ(I)] reflections
9400, 3451, 2112
Rint0.031
(sin θ/λ)max1)0.625
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.040, 0.118, 0.98
No. of reflections3451
No. of parameters253
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.17, 0.19

Computer programs: SMART (Bruker, 1999), SAINT (Bruker, 1999), SAINT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 1997), SHELXTL.

Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N2—H2···O20.861.982.604 (2)128.6
N2—H2···O10.862.523.031 (2)119.4
 

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