organic compounds
4-[4-Ethoxycarbonyl-5-(3,4-methylenedioxyphenyl)-3-oxocyclohex-1-en-1-yl]-3-phenylsydnone
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and bDepartment of Studies in Chemistry, Mangalore University, Mangalagangotri, Mangalore 574 199, India
*Correspondence e-mail: hkfun@usm.my
In the title compound {systematic name: 4-[4-ethoxycarbonyl-5-(3,4-methylenedioxyphenyl)-3-oxocyclohex-1-en-1-yl]-3-phenyl-1,2,3-oxadiazol-3-ium-5-olate}, C24H20N2O7, the cyclohexene and dioxole rings adopt envelope conformations. The sydnone ring and the attached phenyl ring form a dihedral angle of 79.0 (1)°. In the molecular structure, a C—H⋯O hydrogen bond generates an S(6) ring and a C—H⋯π interaction involving the phenyl ring is observed. In the molecules are linked into a ribbon-like structure along the a axis by C—H⋯O hydrogen bonds.
Related literature
For general background and applications of sydnone compounds, see: Rai et al. (2008); Jyothi et al. (2008). For the synthesis of sydnone derivatives, see: Kalluraya et al. (2003). For related structures, see: Goh et al. (2010a,b,c). For bond-length data, see: Allen et al. (1987). For hydrogen-bond motifs, see: Bernstein et al. (1995). For puckering parameters, see: Cremer & Pople (1975). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536810033106/ci5156sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810033106/ci5156Isup2.hkl
To a solution of 1-(3-phenylsydnonyl)-3(3,4-methylenedioxyphenyl)-2-propen-1-one (0.01 mol) in dry acetone (50 ml) was added dry potassium carbonate (0.04 mol) and ethyl acetoacetate (0.02 mol) and the mixture was stirred at room temperature overnight and was filtered. The solvent from the filtrate on evaporation gave a solid which was recrystallized from a mixture of ethanol-dioxan. Single crystals suitable for X-ray analysis were obtained from a ethanol solution by slow evaporation.
H atoms were positioned geometrically and refined using a riding model with Uiso(H) = 1.2 or 1.5 Ueq(C) [C–H = 0.93 to 0.97 Å]. A rotating group model was applied to the methyl group.
Sydnones constitute a well defined class of
that contain the 1,2,3-oxadiazole ring system. The study of still remains a field of interest because of their electronic structures and also because of the varied types of biological activities displayed by some of them (Rai et al., 2008). Recently sydnone derivatives have been found to exhibit promising antimicrobial properties (Jyothi et al., 2008). The base-catalyzed condensation of 4-acetyl-3-phenyl with pipernol in aqueous alcoholic medium at 0–50°C gave Michael addition of with ethyl acetoacetate in presence of K2CO3, followed by Claisen condensation afforded 3-aryl-4-[6-carbethoxy-5-(3,4-methylenedioxyphenyl)cyclohex-2-en-1-one-3yl] phenylsydnone (Kalluraya et al., 2003).In the title molecule (Fig.1), the cyclohexene ring (C9–C14) adopts an Θ = 55.7 (2)°, φ = 126.6 (3)° (Cremer & Pople, 1975). The dioxole ring also adopts an with atom C19 as the flap. The dihedral angle between the sydnone ring and the attached phenyl ring is 79.0 (1)°. The bond lengths (Allen et al., 1987) and angles are comparable to related structures (Goh et al., 2010a,b,c). An intramolecular C14—H14A···O6 hydrogen bond (Table 1) generates an S(6) ring motif (Fig. 1, Bernstein et al., 1995). An intramolecular C—H···π interaction (Table 1) involving the C1–C6 ring is also observed.
with the puckering parameters Q = 0.495 (2) Å,In the crystal packing, intermolecular C4—H4A···O4 and C5—H5A···O7 hydrogen bonds (Table 1) link the molecules into a ribbon-like structure along the a axis (Fig. 2).
For general background and applications of sydnone compounds, see: Rai et al. (2008); Jyothi et al. (2008). For the synthesis of sydnone derivatives, see: Kalluraya et al. (2003). For related structures, see: Goh et al. (2010a,b,c). For bond-length data, see: Allen et al. (1987). For hydrogen-bond motifs, see: Bernstein et al. (1995). For puckering parameters, see: Cremer & Pople (1975). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).C24H20N2O7 | Z = 2 |
Mr = 448.42 | F(000) = 468 |
Triclinic, P1 | Dx = 1.448 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.8026 (2) Å | Cell parameters from 5688 reflections |
b = 11.5133 (2) Å | θ = 2.2–30.2° |
c = 11.6981 (2) Å | µ = 0.11 mm−1 |
α = 66.860 (1)° | T = 100 K |
β = 86.545 (1)° | Needle, colourless |
γ = 71.115 (1)° | 0.37 × 0.13 × 0.06 mm |
V = 1028.44 (4) Å3 |
Bruker SMART APEXII CCD area-detector diffractometer | 4703 independent reflections |
Radiation source: fine-focus sealed tube | 3710 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.035 |
φ and ω scans | θmax = 27.5°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −11→11 |
Tmin = 0.962, Tmax = 0.994 | k = −14→14 |
18550 measured reflections | l = −15→15 |
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)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.119 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0499P)2 + 0.6557P] where P = (Fo2 + 2Fc2)/3 |
4703 reflections | (Δ/σ)max = 0.001 |
299 parameters | Δρmax = 0.56 e Å−3 |
0 restraints | Δρmin = −0.34 e Å−3 |
C24H20N2O7 | γ = 71.115 (1)° |
Mr = 448.42 | V = 1028.44 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.8026 (2) Å | Mo Kα radiation |
b = 11.5133 (2) Å | µ = 0.11 mm−1 |
c = 11.6981 (2) Å | T = 100 K |
α = 66.860 (1)° | 0.37 × 0.13 × 0.06 mm |
β = 86.545 (1)° |
Bruker SMART APEXII CCD area-detector diffractometer | 4703 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3710 reflections with I > 2σ(I) |
Tmin = 0.962, Tmax = 0.994 | Rint = 0.035 |
18550 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.119 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.56 e Å−3 |
4703 reflections | Δρmin = −0.34 e Å−3 |
299 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K. |
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 | ||
O1 | 0.54796 (15) | −0.47982 (12) | 0.24568 (11) | 0.0225 (3) | |
O2 | 0.09931 (15) | 0.43102 (12) | 0.42387 (11) | 0.0228 (3) | |
O3 | 0.34786 (15) | 0.29504 (13) | 0.53026 (11) | 0.0244 (3) | |
O4 | 0.73361 (16) | 0.19987 (13) | 0.20782 (12) | 0.0263 (3) | |
O5 | 0.63381 (15) | 0.31720 (12) | 0.00796 (11) | 0.0234 (3) | |
O6 | 0.73888 (15) | −0.39479 (12) | 0.14030 (12) | 0.0249 (3) | |
O7 | 0.79429 (16) | 0.03513 (13) | 0.01666 (12) | 0.0271 (3) | |
N1 | 0.39657 (17) | −0.31654 (14) | 0.28604 (13) | 0.0175 (3) | |
N2 | 0.41071 (19) | −0.43911 (14) | 0.30166 (14) | 0.0227 (3) | |
C1 | 0.2822 (2) | −0.29087 (18) | 0.47181 (16) | 0.0219 (4) | |
H1A | 0.3768 | −0.3542 | 0.5175 | 0.026* | |
C2 | 0.1577 (2) | −0.23095 (19) | 0.52984 (17) | 0.0255 (4) | |
H2A | 0.1680 | −0.2536 | 0.6152 | 0.031* | |
C3 | 0.0177 (2) | −0.13688 (19) | 0.45938 (19) | 0.0279 (4) | |
H3A | −0.0658 | −0.0963 | 0.4980 | 0.033* | |
C4 | 0.0010 (2) | −0.10279 (19) | 0.33208 (18) | 0.0277 (4) | |
H4A | −0.0935 | −0.0395 | 0.2861 | 0.033* | |
C5 | 0.1236 (2) | −0.16201 (18) | 0.27268 (16) | 0.0231 (4) | |
H5A | 0.1129 | −0.1404 | 0.1875 | 0.028* | |
C6 | 0.2628 (2) | −0.25450 (16) | 0.34455 (15) | 0.0181 (3) | |
C7 | 0.6164 (2) | −0.37744 (16) | 0.19344 (15) | 0.0186 (4) | |
C8 | 0.5132 (2) | −0.26951 (16) | 0.22242 (15) | 0.0165 (3) | |
C9 | 0.5348 (2) | −0.14190 (16) | 0.19358 (14) | 0.0155 (3) | |
C10 | 0.4237 (2) | −0.03949 (16) | 0.23803 (15) | 0.0161 (3) | |
H10A | 0.3924 | −0.0853 | 0.3202 | 0.019* | |
H10B | 0.3269 | 0.0099 | 0.1819 | 0.019* | |
C11 | 0.5027 (2) | 0.05872 (17) | 0.24418 (16) | 0.0196 (4) | |
H11A | 0.5949 | 0.0075 | 0.3064 | 0.023* | |
C12 | 0.5672 (2) | 0.12241 (17) | 0.11849 (16) | 0.0209 (4) | |
H12A | 0.4763 | 0.1728 | 0.0550 | 0.025* | |
C13 | 0.6849 (2) | 0.01333 (18) | 0.08194 (16) | 0.0200 (4) | |
C14 | 0.6583 (2) | −0.11497 (17) | 0.12458 (15) | 0.0177 (3) | |
H14A | 0.7294 | −0.1819 | 0.1035 | 0.021* | |
C15 | 0.3878 (2) | 0.16253 (17) | 0.28630 (16) | 0.0193 (4) | |
C16 | 0.2380 (2) | 0.24512 (18) | 0.22215 (16) | 0.0225 (4) | |
H16A | 0.2090 | 0.2370 | 0.1512 | 0.027* | |
C17 | 0.1295 (2) | 0.34015 (17) | 0.26119 (16) | 0.0212 (4) | |
H17A | 0.0298 | 0.3947 | 0.2183 | 0.025* | |
C18 | 0.1795 (2) | 0.34732 (16) | 0.36599 (15) | 0.0180 (4) | |
C19 | 0.1948 (2) | 0.38560 (18) | 0.53747 (17) | 0.0232 (4) | |
H19A | 0.1418 | 0.3407 | 0.6080 | 0.028* | |
H19B | 0.2093 | 0.4608 | 0.5482 | 0.028* | |
C20 | 0.3280 (2) | 0.26646 (17) | 0.42936 (16) | 0.0190 (4) | |
C21 | 0.4350 (2) | 0.17364 (17) | 0.39255 (16) | 0.0193 (4) | |
H21A | 0.5346 | 0.1204 | 0.4362 | 0.023* | |
C22 | 0.6534 (2) | 0.21628 (17) | 0.11888 (16) | 0.0187 (4) | |
C23 | 0.7312 (2) | 0.40341 (18) | −0.00653 (18) | 0.0267 (4) | |
H23A | 0.7349 | 0.4177 | 0.0695 | 0.032* | |
H23B | 0.6825 | 0.4896 | −0.0740 | 0.032* | |
C24 | 0.8997 (2) | 0.3393 (2) | −0.0344 (2) | 0.0348 (5) | |
H24A | 0.9649 | 0.3929 | −0.0374 | 0.052* | |
H24B | 0.8965 | 0.3325 | −0.1134 | 0.052* | |
H24C | 0.9450 | 0.2516 | 0.0298 | 0.052* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0288 (7) | 0.0144 (6) | 0.0231 (6) | −0.0049 (5) | 0.0041 (5) | −0.0082 (5) |
O2 | 0.0216 (6) | 0.0217 (6) | 0.0233 (6) | 0.0021 (5) | 0.0006 (5) | −0.0142 (5) |
O3 | 0.0209 (7) | 0.0281 (7) | 0.0225 (6) | 0.0006 (5) | −0.0002 (5) | −0.0150 (5) |
O4 | 0.0303 (7) | 0.0250 (7) | 0.0251 (7) | −0.0094 (6) | 0.0006 (5) | −0.0109 (5) |
O5 | 0.0281 (7) | 0.0187 (6) | 0.0231 (6) | −0.0081 (5) | 0.0003 (5) | −0.0076 (5) |
O6 | 0.0263 (7) | 0.0211 (7) | 0.0299 (7) | −0.0048 (5) | 0.0064 (5) | −0.0158 (5) |
O7 | 0.0295 (7) | 0.0278 (7) | 0.0315 (7) | −0.0141 (6) | 0.0156 (6) | −0.0175 (6) |
N1 | 0.0233 (8) | 0.0134 (7) | 0.0153 (7) | −0.0058 (6) | 0.0011 (5) | −0.0052 (5) |
N2 | 0.0304 (9) | 0.0148 (7) | 0.0217 (7) | −0.0066 (6) | 0.0047 (6) | −0.0069 (6) |
C1 | 0.0248 (9) | 0.0215 (9) | 0.0191 (8) | −0.0096 (7) | 0.0013 (7) | −0.0061 (7) |
C2 | 0.0312 (10) | 0.0313 (10) | 0.0212 (9) | −0.0166 (9) | 0.0083 (7) | −0.0134 (8) |
C3 | 0.0280 (10) | 0.0265 (10) | 0.0360 (11) | −0.0117 (8) | 0.0134 (8) | −0.0185 (8) |
C4 | 0.0237 (10) | 0.0201 (9) | 0.0345 (10) | −0.0037 (8) | 0.0019 (8) | −0.0087 (8) |
C5 | 0.0281 (10) | 0.0198 (9) | 0.0193 (8) | −0.0082 (8) | 0.0008 (7) | −0.0053 (7) |
C6 | 0.0221 (9) | 0.0152 (8) | 0.0200 (8) | −0.0087 (7) | 0.0053 (7) | −0.0085 (6) |
C7 | 0.0246 (9) | 0.0138 (8) | 0.0166 (8) | −0.0040 (7) | −0.0021 (7) | −0.0062 (6) |
C8 | 0.0190 (8) | 0.0156 (8) | 0.0150 (8) | −0.0039 (7) | 0.0010 (6) | −0.0074 (6) |
C9 | 0.0185 (8) | 0.0149 (8) | 0.0125 (7) | −0.0032 (6) | −0.0018 (6) | −0.0062 (6) |
C10 | 0.0179 (8) | 0.0141 (8) | 0.0167 (8) | −0.0044 (6) | 0.0029 (6) | −0.0073 (6) |
C11 | 0.0216 (9) | 0.0179 (8) | 0.0210 (8) | −0.0062 (7) | 0.0035 (7) | −0.0099 (7) |
C12 | 0.0238 (9) | 0.0194 (9) | 0.0214 (9) | −0.0073 (7) | 0.0028 (7) | −0.0101 (7) |
C13 | 0.0225 (9) | 0.0232 (9) | 0.0188 (8) | −0.0086 (7) | 0.0044 (7) | −0.0122 (7) |
C14 | 0.0200 (8) | 0.0175 (8) | 0.0172 (8) | −0.0032 (7) | 0.0023 (6) | −0.0109 (6) |
C15 | 0.0199 (9) | 0.0152 (8) | 0.0237 (9) | −0.0068 (7) | 0.0083 (7) | −0.0086 (7) |
C16 | 0.0287 (10) | 0.0235 (9) | 0.0203 (8) | −0.0105 (8) | 0.0051 (7) | −0.0127 (7) |
C17 | 0.0220 (9) | 0.0183 (9) | 0.0211 (9) | −0.0046 (7) | 0.0013 (7) | −0.0070 (7) |
C18 | 0.0199 (9) | 0.0129 (8) | 0.0207 (8) | −0.0036 (7) | 0.0070 (7) | −0.0081 (6) |
C19 | 0.0234 (9) | 0.0227 (9) | 0.0235 (9) | −0.0024 (7) | 0.0021 (7) | −0.0132 (7) |
C20 | 0.0212 (9) | 0.0164 (8) | 0.0195 (8) | −0.0063 (7) | 0.0043 (7) | −0.0075 (6) |
C21 | 0.0179 (8) | 0.0151 (8) | 0.0225 (9) | −0.0033 (7) | 0.0041 (7) | −0.0071 (7) |
C22 | 0.0187 (8) | 0.0175 (8) | 0.0210 (8) | −0.0038 (7) | 0.0051 (7) | −0.0108 (7) |
C23 | 0.0346 (11) | 0.0187 (9) | 0.0287 (10) | −0.0136 (8) | 0.0014 (8) | −0.0071 (7) |
C24 | 0.0315 (11) | 0.0345 (12) | 0.0395 (12) | −0.0176 (9) | 0.0060 (9) | −0.0107 (9) |
O1—N2 | 1.3739 (19) | C10—C11 | 1.532 (2) |
O1—C7 | 1.405 (2) | C10—H10A | 0.97 |
O2—C18 | 1.379 (2) | C10—H10B | 0.97 |
O2—C19 | 1.432 (2) | C11—C15 | 1.521 (2) |
O3—C20 | 1.378 (2) | C11—C12 | 1.531 (2) |
O3—C19 | 1.434 (2) | C11—H11A | 0.98 |
O4—C22 | 1.210 (2) | C12—C22 | 1.509 (2) |
O5—C22 | 1.333 (2) | C12—C13 | 1.536 (2) |
O5—C23 | 1.466 (2) | C12—H12A | 0.98 |
O6—C7 | 1.211 (2) | C13—C14 | 1.455 (2) |
O7—C13 | 1.221 (2) | C14—H14A | 0.93 |
N1—N2 | 1.314 (2) | C15—C16 | 1.397 (3) |
N1—C8 | 1.361 (2) | C15—C21 | 1.399 (2) |
N1—C6 | 1.452 (2) | C16—C17 | 1.408 (2) |
C1—C6 | 1.384 (2) | C16—H16A | 0.93 |
C1—C2 | 1.388 (3) | C17—C18 | 1.368 (2) |
C1—H1A | 0.93 | C17—H17A | 0.93 |
C2—C3 | 1.389 (3) | C18—C20 | 1.383 (2) |
C2—H2A | 0.93 | C19—H19A | 0.97 |
C3—C4 | 1.387 (3) | C19—H19B | 0.97 |
C3—H3A | 0.93 | C20—C21 | 1.370 (2) |
C4—C5 | 1.385 (3) | C21—H21A | 0.93 |
C4—H4A | 0.93 | C23—C24 | 1.508 (3) |
C5—C6 | 1.385 (2) | C23—H23A | 0.97 |
C5—H5A | 0.9300 | C23—H23B | 0.97 |
C7—C8 | 1.431 (2) | C24—H24A | 0.96 |
C8—C9 | 1.446 (2) | C24—H24B | 0.96 |
C9—C14 | 1.358 (2) | C24—H24C | 0.96 |
C9—C10 | 1.514 (2) | ||
N2—O1—C7 | 110.82 (12) | C11—C12—C13 | 110.07 (14) |
C18—O2—C19 | 105.46 (13) | C22—C12—H12A | 108.5 |
C20—O3—C19 | 105.33 (13) | C11—C12—H12A | 108.5 |
C22—O5—C23 | 115.58 (14) | C13—C12—H12A | 108.5 |
N2—N1—C8 | 115.22 (14) | O7—C13—C14 | 121.36 (16) |
N2—N1—C6 | 114.75 (14) | O7—C13—C12 | 120.91 (16) |
C8—N1—C6 | 129.96 (14) | C14—C13—C12 | 117.71 (15) |
N1—N2—O1 | 104.74 (13) | C9—C14—C13 | 123.30 (16) |
C6—C1—C2 | 118.67 (17) | C9—C14—H14A | 118.4 |
C6—C1—H1A | 120.7 | C13—C14—H14A | 118.4 |
C2—C1—H1A | 120.7 | C16—C15—C21 | 119.99 (16) |
C1—C2—C3 | 119.48 (17) | C16—C15—C11 | 121.71 (16) |
C1—C2—H2A | 120.3 | C21—C15—C11 | 118.30 (15) |
C3—C2—H2A | 120.3 | C15—C16—C17 | 122.31 (16) |
C4—C3—C2 | 120.67 (18) | C15—C16—H16A | 118.8 |
C4—C3—H3A | 119.7 | C17—C16—H16A | 118.8 |
C2—C3—H3A | 119.7 | C18—C17—C16 | 115.96 (16) |
C5—C4—C3 | 120.66 (18) | C18—C17—H17A | 122.0 |
C5—C4—H4A | 119.7 | C16—C17—H17A | 122.0 |
C3—C4—H4A | 119.7 | C17—C18—O2 | 128.32 (16) |
C6—C5—C4 | 117.67 (17) | C17—C18—C20 | 121.97 (16) |
C6—C5—H5A | 121.2 | O2—C18—C20 | 109.71 (15) |
C4—C5—H5A | 121.2 | O2—C19—O3 | 107.89 (13) |
C1—C6—C5 | 122.84 (16) | O2—C19—H19A | 110.1 |
C1—C6—N1 | 117.38 (15) | O3—C19—H19A | 110.1 |
C5—C6—N1 | 119.77 (15) | O2—C19—H19B | 110.1 |
O6—C7—O1 | 120.52 (15) | O3—C19—H19B | 110.1 |
O6—C7—C8 | 134.77 (16) | H19A—C19—H19B | 108.4 |
O1—C7—C8 | 104.70 (14) | C21—C20—O3 | 127.31 (16) |
N1—C8—C7 | 104.51 (14) | C21—C20—C18 | 122.79 (16) |
N1—C8—C9 | 128.77 (15) | O3—C20—C18 | 109.90 (15) |
C7—C8—C9 | 126.68 (15) | C20—C21—C15 | 116.97 (16) |
C14—C9—C8 | 118.32 (15) | C20—C21—H21A | 121.5 |
C14—C9—C10 | 120.05 (15) | C15—C21—H21A | 121.5 |
C8—C9—C10 | 121.62 (14) | O4—C22—O5 | 124.34 (16) |
C9—C10—C11 | 112.31 (14) | O4—C22—C12 | 124.18 (16) |
C9—C10—H10A | 109.1 | O5—C22—C12 | 111.46 (14) |
C11—C10—H10A | 109.1 | O5—C23—C24 | 109.97 (15) |
C9—C10—H10B | 109.1 | O5—C23—H23A | 109.7 |
C11—C10—H10B | 109.1 | C24—C23—H23A | 109.7 |
H10A—C10—H10B | 107.9 | O5—C23—H23B | 109.7 |
C15—C11—C12 | 112.34 (14) | C24—C23—H23B | 109.7 |
C15—C11—C10 | 111.42 (14) | H23A—C23—H23B | 108.2 |
C12—C11—C10 | 109.94 (14) | C23—C24—H24A | 109.5 |
C15—C11—H11A | 107.6 | C23—C24—H24B | 109.5 |
C12—C11—H11A | 107.6 | H24A—C24—H24B | 109.5 |
C10—C11—H11A | 107.6 | C23—C24—H24C | 109.5 |
C22—C12—C11 | 113.06 (14) | H24A—C24—H24C | 109.5 |
C22—C12—C13 | 108.19 (14) | H24B—C24—H24C | 109.5 |
C8—N1—N2—O1 | 0.58 (18) | C11—C12—C13—O7 | −151.39 (16) |
C6—N1—N2—O1 | −176.69 (13) | C22—C12—C13—C14 | 154.41 (15) |
C7—O1—N2—N1 | −0.90 (17) | C11—C12—C13—C14 | 30.4 (2) |
C6—C1—C2—C3 | 0.1 (3) | C8—C9—C14—C13 | 175.29 (15) |
C1—C2—C3—C4 | 0.2 (3) | C10—C9—C14—C13 | −4.6 (2) |
C2—C3—C4—C5 | 0.1 (3) | O7—C13—C14—C9 | −177.63 (16) |
C3—C4—C5—C6 | −0.7 (3) | C12—C13—C14—C9 | 0.5 (2) |
C2—C1—C6—C5 | −0.8 (3) | C12—C11—C15—C16 | 66.7 (2) |
C2—C1—C6—N1 | 178.54 (15) | C10—C11—C15—C16 | −57.2 (2) |
C4—C5—C6—C1 | 1.1 (3) | C12—C11—C15—C21 | −113.64 (17) |
C4—C5—C6—N1 | −178.24 (15) | C10—C11—C15—C21 | 122.49 (16) |
N2—N1—C6—C1 | 78.33 (19) | C21—C15—C16—C17 | −0.7 (3) |
C8—N1—C6—C1 | −98.4 (2) | C11—C15—C16—C17 | 178.99 (16) |
N2—N1—C6—C5 | −102.29 (18) | C15—C16—C17—C18 | 0.2 (3) |
C8—N1—C6—C5 | 80.9 (2) | C16—C17—C18—O2 | 179.39 (16) |
N2—O1—C7—O6 | 179.69 (15) | C16—C17—C18—C20 | 0.3 (3) |
N2—O1—C7—C8 | 0.88 (17) | C19—O2—C18—C17 | 172.59 (18) |
N2—N1—C8—C7 | −0.05 (19) | C19—O2—C18—C20 | −8.19 (18) |
C6—N1—C8—C7 | 176.72 (15) | C18—O2—C19—O3 | 12.89 (18) |
N2—N1—C8—C9 | −177.79 (16) | C20—O3—C19—O2 | −12.72 (18) |
C6—N1—C8—C9 | −1.0 (3) | C19—O3—C20—C21 | −172.51 (17) |
O6—C7—C8—N1 | −179.06 (19) | C19—O3—C20—C18 | 7.75 (18) |
O1—C7—C8—N1 | −0.50 (17) | C17—C18—C20—C21 | −0.2 (3) |
O6—C7—C8—C9 | −1.3 (3) | O2—C18—C20—C21 | −179.48 (15) |
O1—C7—C8—C9 | 177.31 (15) | C17—C18—C20—O3 | 179.55 (15) |
N1—C8—C9—C14 | −177.80 (16) | O2—C18—C20—O3 | 0.27 (19) |
C7—C8—C9—C14 | 4.9 (3) | O3—C20—C21—C15 | 180.00 (16) |
N1—C8—C9—C10 | 2.0 (3) | C18—C20—C21—C15 | −0.3 (3) |
C7—C8—C9—C10 | −175.23 (15) | C16—C15—C21—C20 | 0.7 (2) |
C14—C9—C10—C11 | −23.1 (2) | C11—C15—C21—C20 | −178.98 (15) |
C8—C9—C10—C11 | 157.03 (15) | C23—O5—C22—O4 | 6.4 (2) |
C9—C10—C11—C15 | 178.75 (14) | C23—O5—C22—C12 | −171.70 (14) |
C9—C10—C11—C12 | 53.54 (18) | C11—C12—C22—O4 | 34.7 (2) |
C15—C11—C12—C22 | 57.8 (2) | C13—C12—C22—O4 | −87.5 (2) |
C10—C11—C12—C22 | −177.53 (14) | C11—C12—C22—O5 | −147.17 (15) |
C15—C11—C12—C13 | 178.89 (14) | C13—C12—C22—O5 | 90.67 (17) |
C10—C11—C12—C13 | −56.42 (18) | C22—O5—C23—C24 | 80.80 (19) |
C22—C12—C13—O7 | −27.4 (2) |
Cg1 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4A···O4i | 0.93 | 2.49 | 3.304 (3) | 146 |
C5—H5A···O7ii | 0.93 | 2.44 | 3.258 (2) | 146 |
C14—H14A···O6 | 0.93 | 2.29 | 2.998 (2) | 133 |
C10—H10A···Cg1 | 0.97 | 2.48 | 3.570 (2) | 133 |
Symmetry codes: (i) x−1, y, z; (ii) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C24H20N2O7 |
Mr | 448.42 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 8.8026 (2), 11.5133 (2), 11.6981 (2) |
α, β, γ (°) | 66.860 (1), 86.545 (1), 71.115 (1) |
V (Å3) | 1028.44 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.37 × 0.13 × 0.06 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.962, 0.994 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 18550, 4703, 3710 |
Rint | 0.035 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.119, 1.03 |
No. of reflections | 4703 |
No. of parameters | 299 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.56, −0.34 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg1 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4A···O4i | 0.93 | 2.49 | 3.304 (3) | 146 |
C5—H5A···O7ii | 0.93 | 2.44 | 3.258 (2) | 146 |
C14—H14A···O6 | 0.93 | 2.29 | 2.998 (2) | 133 |
C10—H10A···Cg1 | 0.97 | 2.48 | 3.570 (2) | 133 |
Symmetry codes: (i) x−1, y, z; (ii) −x+1, −y, −z. |
Acknowledgements
The authors thank Universiti Sains Malaysia (USM) for the Research University Golden Goose Grant (1001/PFIZIK/811012). WSL thanks the Malaysian Government and USM for the award of a research fellowship.
References
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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.
Sydnones constitute a well defined class of mesoionic compounds that contain the 1,2,3-oxadiazole ring system. The study of sydnones still remains a field of interest because of their electronic structures and also because of the varied types of biological activities displayed by some of them (Rai et al., 2008). Recently sydnone derivatives have been found to exhibit promising antimicrobial properties (Jyothi et al., 2008). The base-catalyzed condensation of 4-acetyl-3-phenyl sydnones with pipernol in aqueous alcoholic medium at 0–50°C gave chalcones. Michael addition of chalcones with ethyl acetoacetate in presence of K2CO3, followed by Claisen condensation afforded 3-aryl-4-[6-carbethoxy-5-(3,4-methylenedioxyphenyl)cyclohex-2-en-1-one-3yl] phenylsydnone (Kalluraya et al., 2003).
In the title molecule (Fig.1), the cyclohexene ring (C9–C14) adopts an envelope conformation, with the puckering parameters Q = 0.495 (2) Å, Θ = 55.7 (2)°, φ = 126.6 (3)° (Cremer & Pople, 1975). The dioxole ring also adopts an envelope conformation with atom C19 as the flap. The dihedral angle between the sydnone ring and the attached phenyl ring is 79.0 (1)°. The bond lengths (Allen et al., 1987) and angles are comparable to related structures (Goh et al., 2010a,b,c). An intramolecular C14—H14A···O6 hydrogen bond (Table 1) generates an S(6) ring motif (Fig. 1, Bernstein et al., 1995). An intramolecular C—H···π interaction (Table 1) involving the C1–C6 ring is also observed.
In the crystal packing, intermolecular C4—H4A···O4 and C5—H5A···O7 hydrogen bonds (Table 1) link the molecules into a ribbon-like structure along the a axis (Fig. 2).