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The furanone ring in the title compound, C11H10O2, is effectively planar and forms a dihedral angle of 74.42 (14)° with the cyclopropyl ring. The phenyl ring is somewhat twisted with respect to the approximate `mirror plane' of the bicyclic system; the dihedral angles formed by the plane of the phenyl ring with the cyclopropyl and furanone mean planes are almost equal, viz. 98.30 (14) and 98.14 (10)°, respectively.
Supporting information
CCDC reference: 162837
Key indicators
- Single-crystal X-ray study
- T = 173 K
- Mean (C-C) = 0.003 Å
- R factor = 0.039
- wR factor = 0.144
- Data-to-parameter ratio = 16.6
checkCIF results
No syntax errors found
ADDSYM reports no extra symmetry
Alert Level C:
ABSMU_01 Alert C The ratio of given/expected absorption coefficient lies
outside the range 0.99 <> 1.01
Calculated value of mu = 0.092
Value of mu given = 0.090
0 Alert Level A = Potentially serious problem
0 Alert Level B = Potential problem
1 Alert Level C = Please check
The title compound was prepared by the trifluoroacetic acid-catalysed
cyclization of the 2-(hydroxymethyl)-3-phenylcyclopropane-1-carboxylic acid
precursor as described previously (Avery et al., 2001). Crystals were
obtained from the slow evaporation of a heptane solution of the compound; m.p.
367–369 K.
H atoms were placed in geometrically calculated positions and included in the
final refinement in the riding model approximation with an overall
displacement parameter.
Data collection: MSC/AFC Diffractometer Control Software (Molecular Structure Corporation,
1996); cell refinement: MSC/AFC Diffractometer Control Software; data reduction: TEXSAN for Windows (Molecular Structure Corporation, 1997); program(s) used to solve structure: SIR97 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); software used to prepare material for publication: SHELXL97.
Crystal data top
C11H10O2 | F(000) = 368 |
Mr = 174.20 | Dx = 1.348 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
a = 8.927 (1) Å | Cell parameters from 25 reflections |
b = 10.2311 (9) Å | θ = 7.4–12.9° |
c = 9.776 (2) Å | µ = 0.09 mm−1 |
β = 106.04 (2)° | T = 173 K |
V = 858.1 (2) Å3 | Plate, pale yellow |
Z = 4 | 0.45 × 0.39 × 0.07 mm |
Data collection top
Rigaku AFC-7R diffractometer | Rint = 0.023 |
Radiation source: Rotating anode | θmax = 27.5°, θmin = 3.1° |
Graphite monochromator | h = 0→11 |
ω–2θ scans | k = 0→13 |
2215 measured reflections | l = −12→12 |
1975 independent reflections | 3 standard reflections every 400 reflections |
1205 reflections with I > 2σ(I) | intensity decay: 0.8% |
Refinement top
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)] = 0.039 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.144 | H-atom parameters constrained |
S = 0.93 | w = 1/[σ2(Fo2) + (0.1P)2] where P = (Fo2 + 2Fc2)/3 |
1975 reflections | (Δ/σ)max < 0.001 |
119 parameters | Δρmax = 0.23 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
Crystal data top
C11H10O2 | V = 858.1 (2) Å3 |
Mr = 174.20 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 8.927 (1) Å | µ = 0.09 mm−1 |
b = 10.2311 (9) Å | T = 173 K |
c = 9.776 (2) Å | 0.45 × 0.39 × 0.07 mm |
β = 106.04 (2)° | |
Data collection top
Rigaku AFC-7R diffractometer | Rint = 0.023 |
2215 measured reflections | 3 standard reflections every 400 reflections |
1975 independent reflections | intensity decay: 0.8% |
1205 reflections with I > 2σ(I) | |
Refinement top
R[F2 > 2σ(F2)] = 0.039 | 0 restraints |
wR(F2) = 0.144 | H-atom parameters constrained |
S = 0.93 | Δρmax = 0.23 e Å−3 |
1975 reflections | Δρmin = −0.23 e Å−3 |
119 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 | x | y | z | Uiso*/Ueq | |
O1 | 0.81985 (16) | 0.47550 (14) | −0.22703 (15) | 0.0411 (4) | |
O2 | 0.89696 (15) | 0.28110 (13) | −0.28633 (12) | 0.0327 (3) | |
C1 | 0.8786 (2) | 0.37053 (17) | −0.18989 (19) | 0.0283 (4) | |
C3a | 1.0161 (2) | 0.18976 (17) | −0.05885 (17) | 0.0260 (4) | |
H3C | 1.1146 | 0.1635 | 0.0133 | 0.0393 (18)* | |
C3 | 1.0011 (2) | 0.17653 (18) | −0.21628 (18) | 0.0314 (4) | |
H3A | 1.1043 | 0.1857 | −0.2346 | 0.0393 (18)* | |
H3B | 0.9571 | 0.0902 | −0.2517 | 0.0393 (18)* | |
C4a | 0.93855 (19) | 0.31802 (16) | −0.04488 (18) | 0.0261 (4) | |
H4B | 0.9838 | 0.3776 | 0.0373 | 0.0393 (18)* | |
C4 | 0.86443 (19) | 0.18767 (16) | −0.02229 (17) | 0.0250 (4) | |
H4A | 0.7727 | 0.1610 | −0.1021 | 0.0393 (18)* | |
C41 | 0.85289 (19) | 0.15267 (16) | 0.12207 (18) | 0.0253 (4) | |
C42 | 0.7339 (2) | 0.06979 (18) | 0.1345 (2) | 0.0299 (4) | |
H42 | 0.6623 | 0.0365 | 0.0510 | 0.0393 (18)* | |
C43 | 0.7181 (2) | 0.03500 (19) | 0.2671 (2) | 0.0357 (4) | |
H43 | 0.6372 | −0.0229 | 0.2736 | 0.0393 (18)* | |
C44 | 0.8196 (3) | 0.0842 (2) | 0.3895 (2) | 0.0394 (5) | |
H44 | 0.8074 | 0.0617 | 0.4801 | 0.0393 (18)* | |
C45 | 0.9393 (2) | 0.1668 (2) | 0.3793 (2) | 0.0390 (5) | |
H45 | 1.0097 | 0.2005 | 0.4633 | 0.0393 (18)* | |
C46 | 0.9566 (2) | 0.20019 (18) | 0.24701 (19) | 0.0317 (4) | |
H46 | 1.0397 | 0.2559 | 0.2411 | 0.0393 (18)* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.0450 (8) | 0.0320 (7) | 0.0474 (8) | 0.0114 (6) | 0.0146 (6) | 0.0153 (6) |
O2 | 0.0397 (7) | 0.0331 (7) | 0.0240 (6) | 0.0031 (6) | 0.0065 (5) | 0.0021 (5) |
C1 | 0.0275 (8) | 0.0262 (9) | 0.0317 (9) | −0.0006 (7) | 0.0092 (7) | 0.0031 (7) |
C3a | 0.0272 (8) | 0.0248 (8) | 0.0250 (8) | 0.0041 (7) | 0.0056 (6) | −0.0005 (6) |
C3 | 0.0403 (10) | 0.0263 (9) | 0.0287 (9) | 0.0052 (8) | 0.0113 (8) | −0.0011 (7) |
C4a | 0.0298 (8) | 0.0213 (8) | 0.0265 (8) | −0.0001 (7) | 0.0065 (7) | −0.0009 (7) |
C4 | 0.0256 (8) | 0.0226 (8) | 0.0242 (8) | −0.0003 (7) | 0.0027 (6) | −0.0001 (7) |
C41 | 0.0271 (8) | 0.0210 (8) | 0.0274 (8) | 0.0042 (6) | 0.0072 (7) | 0.0011 (6) |
C42 | 0.0292 (9) | 0.0268 (9) | 0.0343 (10) | 0.0035 (7) | 0.0094 (7) | 0.0008 (7) |
C43 | 0.0353 (10) | 0.0304 (10) | 0.0478 (11) | 0.0052 (8) | 0.0222 (8) | 0.0086 (8) |
C44 | 0.0524 (12) | 0.0399 (11) | 0.0325 (10) | 0.0113 (10) | 0.0226 (9) | 0.0085 (8) |
C45 | 0.0475 (12) | 0.0400 (11) | 0.0268 (9) | 0.0062 (9) | 0.0056 (8) | 0.0001 (8) |
C46 | 0.0325 (9) | 0.0322 (9) | 0.0285 (9) | −0.0006 (8) | 0.0052 (7) | 0.0008 (7) |
Geometric parameters (Å, º) top
O1—C1 | 1.206 (2) | C4—C41 | 1.487 (2) |
O2—C1 | 1.356 (2) | C41—C42 | 1.391 (2) |
O2—C3 | 1.458 (2) | C41—C46 | 1.400 (2) |
C1—C4a | 1.471 (2) | C42—C43 | 1.388 (3) |
C3a—C3 | 1.514 (2) | C43—C44 | 1.381 (3) |
C3a—C4 | 1.493 (2) | C44—C45 | 1.387 (3) |
C3a—C4a | 1.507 (2) | C45—C46 | 1.387 (3) |
C4a—C4 | 1.532 (2) | | |
| | | |
C1—O2—C3 | 110.64 (13) | C41—C4—C3a | 122.41 (14) |
O1—C1—O2 | 121.17 (16) | C41—C4—C4a | 119.51 (14) |
O1—C1—C4a | 128.84 (17) | C3a—C4—C4a | 59.77 (11) |
O2—C1—C4a | 109.99 (15) | C42—C41—C46 | 118.20 (16) |
C4—C3a—C4a | 61.39 (11) | C42—C41—C4 | 119.00 (15) |
C4—C3a—C3 | 114.28 (14) | C46—C41—C4 | 122.80 (15) |
C4a—C3a—C3 | 104.85 (13) | C43—C42—C41 | 121.00 (17) |
O2—C3—C3a | 106.10 (14) | C44—C43—C42 | 120.25 (18) |
C1—C4a—C3a | 106.52 (14) | C43—C44—C45 | 119.62 (17) |
C1—C4a—C4 | 113.60 (14) | C44—C45—C46 | 120.22 (18) |
C3a—C4a—C4 | 58.84 (11) | C45—C46—C41 | 120.70 (17) |
Experimental details
Crystal data |
Chemical formula | C11H10O2 |
Mr | 174.20 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 173 |
a, b, c (Å) | 8.927 (1), 10.2311 (9), 9.776 (2) |
β (°) | 106.04 (2) |
V (Å3) | 858.1 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.45 × 0.39 × 0.07 |
|
Data collection |
Diffractometer | Rigaku AFC-7R diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 2215, 1975, 1205 |
Rint | 0.023 |
(sin θ/λ)max (Å−1) | 0.650 |
|
Refinement |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.144, 0.93 |
No. of reflections | 1975 |
No. of parameters | 119 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.23, −0.23 |
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The title compound, (I), was prepared by the cyclization of 2-(hydroxymethyl)-3-phenylcyclopropane-1-carboxylic acid (Avery et al., 2001). An enantiomerically pure form of the compound has been reported previously (Doyle et al., 1995); the structure of the racemic crystal was determined in the present work (a view of the molecule with the atomic numbering is given in Fig. 1).
The deviations of the O2, C1, C3, C3a and C4a atoms from their least-squares plane are 0.080 (1), -0.056 (2), -0.068 (2), 0.035 (2) and 0.009 (2) Å, respectively; for reference, the displacement of the C4 atom from this plane is 1.285 (2) Å. The dihedral angle formed by the five-membered ring and the plane through the cyclopropyl ring is 74.42 (14)°. The phenyl ring is somewhat twisted with respect to the approximate `mirror plane' of the bicyclic system; the dihedral angles formed by the plane of the phenyl ring with the cyclopropyl and furanone mean planes are, quite expectedly, almost equal [98.30 (14) and 98.14 (10)°, respectively], and the C4a—C4—C41—C42 torsion angle is 152.59 (17)°. The twist about the C4—C41 bond presumably allows for the minimization of the total energy associated with short intramolecular H···H contacts involving H atoms at the C4, C3a, C4a, C42 and C46 atoms.