organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 68| Part 5| May 2012| Page o1435

7-Di­ethyl­amino-2-propyl­sulfan­yl-3-(1H-1,2,4-triazol-1-yl)-4H-thio­chromen-4-one

aDepartment of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, People's Republic of China
*Correspondence e-mail: taoxiao@njut.edu.cn

(Received 10 April 2012; accepted 12 April 2012; online 18 April 2012)

In the title compound, C18H22N4OS2, the six-membered rings are almost coplanar, showing a dihedral angle between the mean planes of 9.0 (4)°, while the triazol ring is nearly perpendicular to the thio­chromen-4-one unit, making an angle of 89.8 (4)°. In the crystal, C—H⋯N hydrogen bonds link the mol­ecules in a stacked arrangement along the c axis.

Related literature

For related compounds, see: Nohara et al. (1977[Nohara, A., Kuriki, H., Saijo, T., Sugihara, H., Kanno, M. & Sanno, Y. (1977). J. Med. Chem. 20, 141-145.]); Xiao et al. (2010[Xiao, T., Li, Y., Liu, D. & Yu, G. (2010). Acta Cryst. E66, o2213.]); Liu et al. (2011[Liu, D., Xiao, T., Li, Y., Yu, G. & Li, C. (2011). Acta Cryst. E67, o1777.]). For bond-length data, see: Allen et al. (1987[Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1-19.]).

[Scheme 1]

Experimental

Crystal data
  • C18H22N4OS2

  • Mr = 374.52

  • Monoclinic, C 2/c

  • a = 21.937 (4) Å

  • b = 9.817 (2) Å

  • c = 19.059 (4) Å

  • β = 109.85 (3)°

  • V = 3860.6 (15) Å3

  • Z = 8

  • Mo Kα radiation

  • μ = 0.29 mm−1

  • T = 293 K

  • 0.30 × 0.20 × 0.20 mm

Data collection
  • Enraf–Nonius CAD-4 diffractometer

  • Absorption correction: ψ scan (North et al., 1968[North, A. C. T., Phillips, D. C. & Mathews, F. S. (1968). Acta Cryst. A24, 351-359.]) Tmin = 0.918, Tmax = 0.944

  • 3644 measured reflections

  • 3549 independent reflections

  • 2309 reflections with I > 2σ(I)

  • Rint = 0.062

  • 3 standard reflections every 200 reflections intensity decay: 1%

Refinement
  • R[F2 > 2σ(F2)] = 0.062

  • wR(F2) = 0.181

  • S = 1.00

  • 3549 reflections

  • 226 parameters

  • 1 restraint

  • H-atom parameters constrained

  • Δρmax = 0.46 e Å−3

  • Δρmin = −0.29 e Å−3

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
C1—H1A⋯N4i 0.93 2.57 3.451 (5) 159
Symmetry code: (i) [x, -y+2, z+{\script{1\over 2}}].

Data collection: CAD-4 Software (Enraf–Nonius, 1985[Enraf-Nonius (1985). CAD-4 Software. Enraf-Nonius, Delft, The Netherlands.]); cell refinement: CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995[Harms, K. & Wocadlo, S. (1995). XCAD4. University of Marburg, Germany.]); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: PLATON (Spek, 2009)[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]; software used to prepare material for publication: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]).

Supporting information


Comment top

The title compound is the key intermediate in the synthesis of a new kind of antiallergic drugs (Nohara et al., 1977). The crystal structure determination has been carried out in order to elucidate its molecular conformation (Fig. 1).

The molecular structure of the title compound, C18H22O1N4S2, exhibits bond lengths and angles within normal ranges (Allen et al., 1987; Xiao et al., 2010; Liu et al., 2011). The six-membered rings A (C1—C6) and B (S1/C6—C9) are almost coplanar, showing a dihedral angle between the mean planes of 9.0 (4)°. The dihedral angle between the ring A (C1—C6) and C (N2/N3/N4/C17/C18) is 83.0 (4)° while the dihedral angle between the ring B (S1/C6—C9) and C (N2/N3/N4/C17—C18) is 89.8 (4)°.

In the crystal structure, intermolecular C—H···N hydrogen bonds (Table 2) link the molecules in a stacked arrangement along the c axis (Fig. 2).

Related literature top

For related compounds, see: Nohara et al. (1977); Xiao et al. (2010); Liu et al. (2011). For bond-length data, see: Allen et al. (1987).

Experimental top

Diethylamine (13.8 ml, 134.4 mmol) was added to a solution of 2-(allylthio)-7-fluoro-3-(1H-1,2,4-triazol-1-yl)-4H-thiochromen-4-one (5 g, 15.7 mmol) in DMSO (30 ml) containing NaOH (1.8 g, 45 mmol). The yellow solution was stirred for about 12 h at room temperature. After completion of the reaction, the solution was poured into water (50 ml). The crystalline product was isolated by filtration and washed with water (300 ml). The precipitate was recrystallized with acetone and a yellow deposit was obtained (m.p. 420 K). Crystals suitable for X-ray analysis were obtained by dissolving the crude product (1.0 g) in ethanol (30 ml) and then allowing the solution to evaporate slowly at room temperature for about 7 d.

Refinement top

The H atoms were positioned geometrically with C—H = 0.93 Å for aromatic H atoms, with C—H = 0.97 Å for methylene H atoms, and with C—H = 0.96 Å for methyl H atoms. They were constrained to ride on their parent atoms with Uiso(H) = 1.2Ueq(C), or 1.5Ueq(C) for the methyl H atoms.

Computing details top

Data collection: CAD-4 Software (Enraf–Nonius, 1985); cell refinement: CAD-4 Software (Enraf–Nonius, 1985); data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Figures top
[Figure 1] Fig. 1. The molecular structure of the title compound. Displacement ellipsoids are drawn at the 50% probability level.
[Figure 2] Fig. 2. A packing diagram of the title compound. Hydrogen bonds are shown as dashed lines.
7-Diethylamino-2-propylsulfanyl-3-(1H-1,2,4-triazol-1-yl)-4H- thiochromen-4-one top
Crystal data top
C18H22N4OS2F(000) = 1584
Mr = 374.52Dx = 1.289 Mg m3
Monoclinic, C2/cMelting point: 420 K
Hall symbol: -C 2ycMo Kα radiation, λ = 0.71073 Å
a = 21.937 (4) ÅCell parameters from 25 reflections
b = 9.817 (2) Åθ = 9–13°
c = 19.059 (4) ŵ = 0.29 mm1
β = 109.85 (3)°T = 293 K
V = 3860.6 (15) Å3Block, yellow
Z = 80.30 × 0.20 × 0.20 mm
Data collection top
Enraf–Nonius CAD-4
diffractometer
2309 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tubeRint = 0.062
Graphite monochromatorθmax = 25.4°, θmin = 2.0°
ω/2θ scansh = 026
Absorption correction: ψ scan
(North et al., 1968)
k = 011
Tmin = 0.918, Tmax = 0.944l = 2221
3644 measured reflections3 standard reflections every 200 reflections
3549 independent reflections intensity decay: 1%
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)] = 0.062Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.181H-atom parameters constrained
S = 1.00 w = 1/[σ2(Fo2) + (0.1P)2 + 2.5P]
where P = (Fo2 + 2Fc2)/3
3549 reflections(Δ/σ)max < 0.001
226 parametersΔρmax = 0.46 e Å3
1 restraintΔρmin = 0.29 e Å3
Crystal data top
C18H22N4OS2V = 3860.6 (15) Å3
Mr = 374.52Z = 8
Monoclinic, C2/cMo Kα radiation
a = 21.937 (4) ŵ = 0.29 mm1
b = 9.817 (2) ÅT = 293 K
c = 19.059 (4) Å0.30 × 0.20 × 0.20 mm
β = 109.85 (3)°
Data collection top
Enraf–Nonius CAD-4
diffractometer
2309 reflections with I > 2σ(I)
Absorption correction: ψ scan
(North et al., 1968)
Rint = 0.062
Tmin = 0.918, Tmax = 0.9443 standard reflections every 200 reflections
3644 measured reflections intensity decay: 1%
3549 independent reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0621 restraint
wR(F2) = 0.181H-atom parameters constrained
S = 1.00Δρmax = 0.46 e Å3
3549 reflectionsΔρmin = 0.29 e Å3
226 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
O0.31273 (13)0.6959 (3)0.19491 (12)0.0685 (7)
S10.37800 (5)0.93494 (9)0.01442 (4)0.0623 (3)
C10.34042 (17)0.7137 (3)0.06581 (16)0.0521 (8)
H1A0.35040.76530.10920.063*
N10.31682 (18)0.5173 (3)0.12929 (16)0.0768 (10)
S20.42593 (6)1.12341 (11)0.07537 (6)0.0778 (4)
N20.37390 (13)0.9341 (3)0.19835 (14)0.0517 (7)
C20.31990 (18)0.5786 (4)0.06550 (18)0.0575 (9)
C30.3029 (2)0.5069 (4)0.00294 (19)0.0647 (10)
H3A0.28840.41750.00510.078*
N30.42763 (15)0.9017 (4)0.21445 (17)0.0755 (10)
C40.30731 (19)0.5662 (3)0.06570 (17)0.0591 (9)
H4A0.29530.51600.10970.071*
N40.35895 (17)1.0243 (4)0.30789 (17)0.0752 (10)
C50.32941 (15)0.7002 (3)0.06632 (15)0.0460 (7)
C60.34602 (15)0.7712 (3)0.00137 (16)0.0461 (7)
C70.33381 (16)0.7573 (3)0.13516 (16)0.0498 (8)
C80.36498 (16)0.8890 (3)0.13097 (16)0.0496 (8)
C90.38666 (17)0.9716 (3)0.07033 (17)0.0521 (8)
C100.3179 (3)0.3638 (5)0.1353 (3)0.0961 (15)
H10A0.33710.32510.10090.115*
H10B0.34390.33660.18550.115*
C110.2543 (3)0.3150 (7)0.1184 (3)0.122 (2)
H11A0.25500.21740.12220.184*
H11B0.22880.34140.06850.184*
H11C0.23560.35270.15290.184*
C120.3326 (2)0.5939 (5)0.1989 (2)0.0825 (13)
H12A0.31150.55120.23040.099*
H12B0.31540.68560.18780.099*
C130.4041 (3)0.6019 (6)0.2407 (3)0.126 (2)
H13A0.41170.65380.28560.189*
H13B0.42530.64540.21010.189*
H13C0.42120.51170.25330.189*
C140.4445 (2)1.1997 (4)0.0179 (2)0.0828 (13)
H14A0.40481.21140.02890.099*
H14B0.47271.13940.05520.099*
C150.4759 (3)1.3310 (5)0.0208 (3)0.1027 (16)
H15A0.44761.39070.01670.123*
H15B0.51551.31880.00950.123*
C160.4921 (3)1.3968 (5)0.0972 (3)0.1077 (17)
H16A0.51261.48320.09720.162*
H16B0.52091.33870.13430.162*
H16C0.45291.41020.10820.162*
C170.4160 (2)0.9580 (5)0.2799 (2)0.0791 (13)
H17A0.44530.95270.30560.095*
C180.33441 (19)1.0072 (4)0.25448 (18)0.0632 (10)
H18A0.29461.04170.25560.076*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O0.101 (2)0.0720 (17)0.0323 (11)0.0199 (14)0.0227 (12)0.0092 (11)
S10.0961 (7)0.0541 (5)0.0374 (4)0.0189 (5)0.0236 (4)0.0066 (4)
C10.075 (2)0.0510 (19)0.0301 (15)0.0042 (17)0.0170 (15)0.0023 (14)
N10.126 (3)0.0677 (18)0.0389 (15)0.019 (2)0.0313 (17)0.0017 (14)
S20.1058 (9)0.0682 (7)0.0592 (6)0.0306 (6)0.0277 (6)0.0010 (5)
N20.0590 (16)0.0614 (17)0.0362 (13)0.0001 (14)0.0179 (12)0.0061 (13)
C20.077 (2)0.055 (2)0.0401 (17)0.0026 (17)0.0192 (16)0.0015 (15)
C30.101 (3)0.0449 (19)0.0478 (19)0.0168 (19)0.0249 (19)0.0029 (16)
N30.065 (2)0.112 (3)0.0568 (19)0.0182 (19)0.0302 (16)0.0236 (18)
C40.089 (3)0.0506 (19)0.0336 (16)0.0120 (18)0.0158 (16)0.0052 (15)
N40.082 (2)0.096 (3)0.0488 (17)0.004 (2)0.0244 (17)0.0219 (17)
C50.0582 (19)0.0483 (18)0.0303 (14)0.0025 (15)0.0133 (13)0.0011 (13)
C60.0564 (19)0.0463 (17)0.0336 (14)0.0001 (14)0.0129 (13)0.0008 (13)
C70.063 (2)0.0542 (19)0.0323 (15)0.0034 (16)0.0159 (14)0.0033 (14)
C80.060 (2)0.0570 (19)0.0323 (15)0.0012 (16)0.0167 (14)0.0056 (14)
C90.064 (2)0.0488 (19)0.0397 (17)0.0095 (16)0.0117 (15)0.0002 (14)
C100.146 (5)0.086 (2)0.060 (3)0.022 (3)0.040 (3)0.009 (2)
C110.140 (5)0.142 (5)0.081 (4)0.004 (4)0.033 (3)0.006 (3)
C120.132 (4)0.078 (3)0.043 (2)0.009 (3)0.037 (2)0.0025 (19)
C130.162 (6)0.125 (5)0.059 (3)0.014 (4)0.003 (3)0.006 (3)
C140.107 (3)0.068 (3)0.069 (3)0.022 (2)0.024 (2)0.003 (2)
C150.116 (4)0.083 (3)0.094 (4)0.010 (3)0.016 (3)0.003 (3)
C160.135 (5)0.082 (3)0.089 (4)0.010 (3)0.016 (3)0.024 (3)
C170.076 (3)0.117 (4)0.053 (2)0.008 (3)0.033 (2)0.023 (2)
C180.069 (2)0.077 (2)0.0439 (18)0.007 (2)0.0201 (17)0.0133 (18)
Geometric parameters (Å, º) top
O—C71.231 (4)C8—C91.358 (4)
S1—C91.727 (3)C10—C111.405 (7)
S1—C61.738 (3)C10—H10A0.9700
C1—C61.394 (4)C10—H10B0.9700
C1—C21.400 (5)C11—H11A0.9600
C1—H1A0.9300C11—H11B0.9600
N1—C21.378 (4)C11—H11C0.9600
N1—C121.460 (5)C12—C131.502 (7)
N1—C101.512 (6)C12—H12A0.9700
S2—C91.740 (3)C12—H12B0.9700
S2—C141.843 (4)C13—H13A0.9600
N2—C181.335 (4)C13—H13B0.9600
N2—N31.353 (4)C13—H13C0.9600
N2—C81.433 (4)C14—C151.454 (6)
C2—C31.416 (5)C14—H14A0.9700
C3—C41.363 (4)C14—H14B0.9700
C3—H3A0.9300C15—C161.520 (6)
N3—C171.308 (4)C15—H15A0.9700
C4—C51.404 (4)C15—H15B0.9700
C4—H4A0.9300C16—H16A0.9600
N4—C181.314 (4)C16—H16B0.9600
N4—C171.350 (5)C16—H16C0.9600
C5—C61.401 (4)C17—H17A0.9300
C5—C71.460 (4)C18—H18A0.9300
C7—C81.452 (5)
C9—S1—C6103.07 (15)C10—C11—H11A109.5
C6—C1—C2120.3 (3)C10—C11—H11B109.5
C6—C1—H1A119.9H11A—C11—H11B109.5
C2—C1—H1A119.9C10—C11—H11C109.5
C2—N1—C12120.6 (3)H11A—C11—H11C109.5
C2—N1—C10119.8 (3)H11B—C11—H11C109.5
C12—N1—C10116.9 (3)N1—C12—C13113.0 (4)
C9—S2—C14104.25 (17)N1—C12—H12A109.0
C18—N2—N3108.8 (3)C13—C12—H12A109.0
C18—N2—C8129.4 (3)N1—C12—H12B109.0
N3—N2—C8121.7 (3)C13—C12—H12B109.0
N1—C2—C1121.4 (3)H12A—C12—H12B107.8
N1—C2—C3121.3 (3)C12—C13—H13A109.5
C1—C2—C3117.3 (3)C12—C13—H13B109.5
C4—C3—C2121.4 (3)H13A—C13—H13B109.5
C4—C3—H3A119.3C12—C13—H13C109.5
C2—C3—H3A119.3H13A—C13—H13C109.5
C17—N3—N2102.4 (3)H13B—C13—H13C109.5
C3—C4—C5122.4 (3)C15—C14—S2110.1 (3)
C3—C4—H4A118.8C15—C14—H14A109.6
C5—C4—H4A118.8S2—C14—H14A109.6
C18—N4—C17101.6 (3)C15—C14—H14B109.6
C6—C5—C4116.2 (3)S2—C14—H14B109.6
C6—C5—C7124.1 (3)H14A—C14—H14B108.2
C4—C5—C7119.7 (3)C14—C15—C16111.5 (4)
C1—C6—C5122.4 (3)C14—C15—H15A109.3
C1—C6—S1113.6 (2)C16—C15—H15A109.3
C5—C6—S1123.9 (2)C14—C15—H15B109.3
O—C7—C8120.6 (3)C16—C15—H15B109.3
O—C7—C5121.6 (3)H15A—C15—H15B108.0
C8—C7—C5117.8 (3)C15—C16—H16A109.5
C9—C8—N2117.6 (3)C15—C16—H16B109.5
C9—C8—C7126.9 (3)H16A—C16—H16B109.5
N2—C8—C7115.5 (3)C15—C16—H16C109.5
C8—C9—S1123.6 (3)H16A—C16—H16C109.5
C8—C9—S2120.1 (3)H16B—C16—H16C109.5
S1—C9—S2116.33 (18)N3—C17—N4115.7 (3)
C11—C10—N1109.5 (5)N3—C17—H17A122.1
C11—C10—H10A109.8N4—C17—H17A122.1
N1—C10—H10A109.8N4—C18—N2111.4 (3)
C11—C10—H10B109.8N4—C18—H18A124.3
N1—C10—H10B109.8N2—C18—H18A124.3
H10A—C10—H10B108.2
C12—N1—C2—C12.4 (6)N3—N2—C8—C990.7 (4)
C10—N1—C2—C1158.5 (4)C18—N2—C8—C789.7 (4)
C12—N1—C2—C3178.1 (4)N3—N2—C8—C788.7 (4)
C10—N1—C2—C321.0 (6)O—C7—C8—C9175.5 (3)
C6—C1—C2—N1177.0 (3)C5—C7—C8—C95.4 (5)
C6—C1—C2—C32.5 (5)O—C7—C8—N25.1 (5)
N1—C2—C3—C4178.5 (4)C5—C7—C8—N2173.9 (3)
C1—C2—C3—C41.0 (6)N2—C8—C9—S1178.3 (2)
C18—N2—N3—C170.3 (4)C7—C8—C9—S12.3 (5)
C8—N2—N3—C17178.4 (3)N2—C8—C9—S22.0 (4)
C2—C3—C4—C50.7 (6)C7—C8—C9—S2177.4 (3)
C3—C4—C5—C60.8 (5)C6—S1—C9—C86.2 (4)
C3—C4—C5—C7179.2 (4)C6—S1—C9—S2173.5 (2)
C2—C1—C6—C52.5 (5)C14—S2—C9—C8179.0 (3)
C2—C1—C6—S1175.3 (3)C14—S2—C9—S11.2 (3)
C4—C5—C6—C10.7 (5)C2—N1—C10—C1198.6 (5)
C7—C5—C6—C1179.2 (3)C12—N1—C10—C1199.8 (5)
C4—C5—C6—S1176.8 (3)C2—N1—C12—C1382.1 (5)
C7—C5—C6—S13.2 (5)C10—N1—C12—C1379.4 (5)
C9—S1—C6—C1174.2 (3)C9—S2—C14—C15178.2 (4)
C9—S1—C6—C53.6 (3)S2—C14—C15—C16179.9 (4)
C6—C5—C7—O172.8 (3)N2—N3—C17—N40.1 (5)
C4—C5—C7—O7.2 (5)C18—N4—C17—N30.5 (5)
C6—C5—C7—C88.2 (5)C17—N4—C18—N20.6 (5)
C4—C5—C7—C8171.9 (3)N3—N2—C18—N40.6 (5)
C18—N2—C8—C990.9 (4)C8—N2—C18—N4177.9 (3)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C1—H1A···N4i0.932.573.451 (5)159
Symmetry code: (i) x, y+2, z+1/2.

Experimental details

Crystal data
Chemical formulaC18H22N4OS2
Mr374.52
Crystal system, space groupMonoclinic, C2/c
Temperature (K)293
a, b, c (Å)21.937 (4), 9.817 (2), 19.059 (4)
β (°) 109.85 (3)
V3)3860.6 (15)
Z8
Radiation typeMo Kα
µ (mm1)0.29
Crystal size (mm)0.30 × 0.20 × 0.20
Data collection
DiffractometerEnraf–Nonius CAD-4
diffractometer
Absorption correctionψ scan
(North et al., 1968)
Tmin, Tmax0.918, 0.944
No. of measured, independent and
observed [I > 2σ(I)] reflections
3644, 3549, 2309
Rint0.062
(sin θ/λ)max1)0.603
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.062, 0.181, 1.00
No. of reflections3549
No. of parameters226
No. of restraints1
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.46, 0.29

Computer programs: CAD-4 Software (Enraf–Nonius, 1985), XCAD4 (Harms & Wocadlo, 1995), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009), SHELXTL (Sheldrick, 2008).

Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C1—H1A···N4i0.93002.57003.451 (5)159.00
Symmetry code: (i) x, y+2, z+1/2.
 

Acknowledgements

The authors thank the Center of Testing and Analysis, Nanjing University, for support.

References

First citationAllen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19.  CrossRef Web of Science Google Scholar
First citationEnraf–Nonius (1985). CAD-4 Software. Enraf–Nonius, Delft, The Netherlands.  Google Scholar
First citationHarms, K. & Wocadlo, S. (1995). XCAD4. University of Marburg, Germany.  Google Scholar
First citationLiu, D., Xiao, T., Li, Y., Yu, G. & Li, C. (2011). Acta Cryst. E67, o1777.  Web of Science CSD CrossRef IUCr Journals Google Scholar
First citationNohara, A., Kuriki, H., Saijo, T., Sugihara, H., Kanno, M. & Sanno, Y. (1977). J. Med. Chem. 20, 141–145.  CrossRef PubMed CAS Web of Science Google Scholar
First citationNorth, A. C. T., Phillips, D. C. & Mathews, F. S. (1968). Acta Cryst. A24, 351–359.  CrossRef IUCr Journals Web of Science Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationSpek, A. L. (2009). Acta Cryst. D65, 148–155.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationXiao, T., Li, Y., Liu, D. & Yu, G. (2010). Acta Cryst. E66, o2213.  Web of Science CSD CrossRef IUCr Journals Google Scholar

This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 68| Part 5| May 2012| Page o1435
Follow Acta Cryst. E
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds