In the title compound, C
14H
18BrNO
2, the six-membered cyclohexanone ring has a sightly distorted chair conformation. The oximino function in the compound assumes an
E configuration, with the hydroxyl group
anti to the substitutents on the tertiary C atom. Of the other three substituents, the bromo and ethoxy groups are axial and the phenyl group is equatorial. Inversion-related molecules form O—H
N hydrogen-bonded dimers.
Supporting information
CCDC reference: 627658
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.005 Å
- R factor = 0.034
- wR factor = 0.086
- Data-to-parameter ratio = 15.7
checkCIF/PLATON results
No syntax errors found
Alert level C
PLAT062_ALERT_4_C Rescale T(min) & T(max) by ..................... 0.92
PLAT220_ALERT_2_C Large Non-Solvent C Ueq(max)/Ueq(min) ... 2.86 Ratio
PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C22
Alert level G
ABSTM02_ALERT_3_G When printed, the submitted absorption T values will be
replaced by the scaled T values. Since the ratio of scaled T's
is identical to the ratio of reported T values, the scaling
does not imply a change to the absorption corrections used in
the study.
Ratio of Tmax expected/reported 0.920
Tmax scaled 0.622 Tmin scaled 0.548
PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K
PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature . 293 K
0 ALERT level A = In general: serious problem
0 ALERT level B = Potentially serious problem
3 ALERT level C = Check and explain
3 ALERT level G = General alerts; check
2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
2 ALERT type 2 Indicator that the structure model may be wrong or deficient
1 ALERT type 3 Indicator that the structure quality may be low
1 ALERT type 4 Improvement, methodology, query or suggestion
0 ALERT type 5 Informative message, check
Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1994); cell refinement: CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXTL/PC (Bruker, 2000); program(s) used to refine structure: SHELXTL/PC; molecular graphics: SHELXTL/PC and PLATON (Spek, 2003); software used to prepare material for publication: SHELXTL/PC.
3-Bromo-2-ethoxy-2-phenylcyclohexan-1-one oxime
top
Crystal data top
C14H18BrNO2 | F(000) = 1280 |
Mr = 312.20 | Dx = 1.411 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 25 reflections |
a = 25.650 (11) Å | θ = 9.9–14.2° |
b = 7.541 (6) Å | µ = 2.79 mm−1 |
c = 15.797 (9) Å | T = 293 K |
β = 105.86 (9)° | Block, colourless |
V = 2939 (3) Å3 | 0.22 × 0.19 × 0.17 mm |
Z = 8 | |
Data collection top
Nonius MACH3 sealed tube diffractometer | 1442 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.029 |
Graphite monochromator | θmax = 25.0°, θmin = 2.7° |
ω/2θ scans | h = 0→30 |
Absorption correction: ψ scan (North et al., 1968) | k = −1→8 |
Tmin = 0.596, Tmax = 0.676 | l = −18→18 |
3070 measured reflections | 3 standard reflections every 60 min |
2580 independent reflections | intensity decay: none |
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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.086 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0322P)2 + 2.1975P] where P = (Fo2 + 2Fc2)/3 |
2580 reflections | (Δ/σ)max < 0.001 |
164 parameters | Δρmax = 0.29 e Å−3 |
0 restraints | Δρmin = −0.40 e Å−3 |
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 | |
C1 | 0.86280 (13) | 0.7658 (4) | 0.5645 (2) | 0.0402 (8) | |
N1 | 0.81149 (11) | 0.7540 (4) | 0.53651 (17) | 0.0462 (7) | |
O1 | 0.79439 (9) | 0.6408 (3) | 0.46354 (15) | 0.0623 (7) | |
H1 | 0.7613 | 0.6446 | 0.4449 | 0.093* | |
C2 | 0.88645 (12) | 0.8664 (4) | 0.64950 (19) | 0.0400 (8) | |
O2 | 0.91318 (8) | 0.7380 (3) | 0.71435 (13) | 0.0465 (6) | |
C22 | 0.88111 (15) | 0.5898 (5) | 0.7285 (2) | 0.0619 (10) | |
H22A | 0.8683 | 0.5216 | 0.6747 | 0.074* | |
H22B | 0.8500 | 0.6311 | 0.7466 | 0.074* | |
C23 | 0.9166 (2) | 0.4788 (6) | 0.7987 (3) | 0.1138 (19) | |
H23A | 0.8966 | 0.3781 | 0.8099 | 0.171* | |
H23B | 0.9290 | 0.5476 | 0.8515 | 0.171* | |
H23C | 0.9473 | 0.4388 | 0.7800 | 0.171* | |
C3 | 0.93618 (13) | 0.9756 (4) | 0.6413 (2) | 0.0494 (9) | |
H3 | 0.9546 | 1.0227 | 0.6996 | 0.059* | |
Br1 | 0.913419 (19) | 1.17745 (5) | 0.56082 (3) | 0.0839 (2) | |
C4 | 0.97656 (13) | 0.8675 (5) | 0.6096 (2) | 0.0595 (10) | |
H4B | 0.9924 | 0.7785 | 0.6535 | 0.071* | |
H4C | 1.0055 | 0.9443 | 0.6030 | 0.071* | |
C5 | 0.95088 (15) | 0.7767 (5) | 0.5227 (3) | 0.0625 (11) | |
H5B | 0.9775 | 0.7005 | 0.5076 | 0.075* | |
H5C | 0.9398 | 0.8656 | 0.4769 | 0.075* | |
C6 | 0.90184 (13) | 0.6666 (5) | 0.5264 (2) | 0.0550 (9) | |
H6B | 0.8831 | 0.6281 | 0.4673 | 0.066* | |
H6C | 0.9141 | 0.5615 | 0.5616 | 0.066* | |
C7 | 0.84729 (12) | 0.9801 (4) | 0.6843 (2) | 0.0441 (8) | |
C8 | 0.85336 (14) | 0.9844 (5) | 0.7744 (2) | 0.0554 (10) | |
H8 | 0.8798 | 0.9147 | 0.8117 | 0.066* | |
C9 | 0.82073 (17) | 1.0903 (6) | 0.8091 (3) | 0.0717 (12) | |
H9 | 0.8254 | 1.0913 | 0.8696 | 0.086* | |
C10 | 0.78147 (17) | 1.1944 (6) | 0.7560 (3) | 0.0813 (13) | |
H10 | 0.7592 | 1.2645 | 0.7798 | 0.098* | |
C11 | 0.77551 (16) | 1.1935 (6) | 0.6669 (3) | 0.0740 (12) | |
H11 | 0.7493 | 1.2651 | 0.6303 | 0.089* | |
C12 | 0.80809 (14) | 1.0872 (5) | 0.6307 (2) | 0.0568 (10) | |
H12 | 0.8035 | 1.0880 | 0.5702 | 0.068* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
C1 | 0.039 (2) | 0.0411 (18) | 0.0418 (19) | −0.0041 (16) | 0.0133 (16) | 0.0028 (15) |
N1 | 0.0483 (19) | 0.0535 (17) | 0.0363 (16) | −0.0120 (14) | 0.0106 (13) | −0.0057 (14) |
O1 | 0.0553 (15) | 0.0808 (19) | 0.0500 (15) | −0.0186 (15) | 0.0128 (13) | −0.0201 (14) |
C2 | 0.0384 (18) | 0.0394 (19) | 0.040 (2) | −0.0055 (15) | 0.0075 (16) | 0.0025 (15) |
O2 | 0.0490 (14) | 0.0414 (12) | 0.0474 (14) | −0.0068 (11) | 0.0101 (11) | 0.0096 (11) |
C22 | 0.072 (3) | 0.055 (2) | 0.061 (2) | −0.018 (2) | 0.023 (2) | 0.006 (2) |
C23 | 0.129 (4) | 0.093 (4) | 0.099 (4) | −0.039 (3) | −0.004 (3) | 0.054 (3) |
C3 | 0.045 (2) | 0.049 (2) | 0.054 (2) | −0.0079 (17) | 0.0128 (17) | 0.0083 (17) |
Br1 | 0.0924 (3) | 0.0515 (2) | 0.1187 (4) | 0.0029 (2) | 0.0473 (3) | 0.0307 (3) |
C4 | 0.039 (2) | 0.064 (3) | 0.079 (3) | −0.0087 (19) | 0.021 (2) | 0.013 (2) |
C5 | 0.055 (2) | 0.069 (3) | 0.070 (3) | 0.005 (2) | 0.030 (2) | 0.005 (2) |
C6 | 0.056 (2) | 0.057 (2) | 0.054 (2) | 0.000 (2) | 0.0188 (18) | −0.0022 (19) |
C7 | 0.0368 (19) | 0.0444 (19) | 0.051 (2) | −0.0078 (17) | 0.0119 (17) | −0.0102 (17) |
C8 | 0.052 (2) | 0.058 (2) | 0.057 (3) | −0.0115 (19) | 0.0157 (19) | −0.0141 (19) |
C9 | 0.067 (3) | 0.084 (3) | 0.066 (3) | −0.013 (3) | 0.022 (2) | −0.030 (2) |
C10 | 0.062 (3) | 0.085 (3) | 0.101 (4) | −0.001 (3) | 0.029 (3) | −0.042 (3) |
C11 | 0.055 (3) | 0.070 (3) | 0.088 (3) | 0.011 (2) | 0.007 (2) | −0.020 (3) |
C12 | 0.048 (2) | 0.056 (2) | 0.065 (2) | 0.003 (2) | 0.012 (2) | −0.008 (2) |
Geometric parameters (Å, º) top
C1—N1 | 1.272 (4) | C4—H4B | 0.9700 |
C1—C6 | 1.501 (4) | C4—H4C | 0.9700 |
C1—C2 | 1.517 (4) | C5—C6 | 1.521 (5) |
N1—O1 | 1.405 (3) | C5—H5B | 0.9700 |
O1—H1 | 0.8200 | C5—H5C | 0.9700 |
C2—O2 | 1.440 (4) | C6—H6B | 0.9700 |
C2—C7 | 1.532 (4) | C6—H6C | 0.9700 |
C2—C3 | 1.553 (4) | C7—C12 | 1.383 (4) |
O2—C22 | 1.441 (4) | C7—C8 | 1.390 (4) |
C22—C23 | 1.486 (5) | C8—C9 | 1.375 (5) |
C22—H22A | 0.9700 | C8—H8 | 0.9300 |
C22—H22B | 0.9700 | C9—C10 | 1.368 (6) |
C23—H23A | 0.9600 | C9—H9 | 0.9300 |
C23—H23B | 0.9600 | C10—C11 | 1.375 (6) |
C23—H23C | 0.9600 | C10—H10 | 0.9300 |
C3—C4 | 1.507 (5) | C11—C12 | 1.389 (5) |
C3—Br1 | 1.966 (3) | C11—H11 | 0.9300 |
C3—H3 | 0.9800 | C12—H12 | 0.9300 |
C4—C5 | 1.515 (5) | | |
| | | |
N1—C1—C6 | 124.5 (3) | C3—C4—H4C | 109.2 |
N1—C1—C2 | 117.9 (3) | C5—C4—H4C | 109.2 |
C6—C1—C2 | 117.1 (3) | H4B—C4—H4C | 107.9 |
C1—N1—O1 | 112.9 (3) | C4—C5—C6 | 111.8 (3) |
N1—O1—H1 | 109.5 | C4—C5—H5B | 109.3 |
O2—C2—C1 | 106.9 (3) | C6—C5—H5B | 109.3 |
O2—C2—C7 | 110.7 (2) | C4—C5—H5C | 109.3 |
C1—C2—C7 | 117.0 (3) | C6—C5—H5C | 109.3 |
O2—C2—C3 | 100.0 (2) | H5B—C5—H5C | 107.9 |
C1—C2—C3 | 109.3 (3) | C1—C6—C5 | 113.1 (3) |
C7—C2—C3 | 111.5 (3) | C1—C6—H6B | 109.0 |
C2—O2—C22 | 116.8 (2) | C5—C6—H6B | 109.0 |
O2—C22—C23 | 107.0 (3) | C1—C6—H6C | 109.0 |
O2—C22—H22A | 110.3 | C5—C6—H6C | 109.0 |
C23—C22—H22A | 110.3 | H6B—C6—H6C | 107.8 |
O2—C22—H22B | 110.3 | C12—C7—C8 | 118.2 (3) |
C23—C22—H22B | 110.3 | C12—C7—C2 | 123.0 (3) |
H22A—C22—H22B | 108.6 | C8—C7—C2 | 118.6 (3) |
C22—C23—H23A | 109.5 | C9—C8—C7 | 120.8 (4) |
C22—C23—H23B | 109.5 | C9—C8—H8 | 119.6 |
H23A—C23—H23B | 109.5 | C7—C8—H8 | 119.6 |
C22—C23—H23C | 109.5 | C10—C9—C8 | 121.0 (4) |
H23A—C23—H23C | 109.5 | C10—C9—H9 | 119.5 |
H23B—C23—H23C | 109.5 | C8—C9—H9 | 119.5 |
C4—C3—C2 | 113.3 (3) | C9—C10—C11 | 118.9 (4) |
C4—C3—Br1 | 108.3 (2) | C9—C10—H10 | 120.6 |
C2—C3—Br1 | 111.0 (2) | C11—C10—H10 | 120.6 |
C4—C3—H3 | 108.0 | C10—C11—C12 | 120.9 (4) |
C2—C3—H3 | 108.0 | C10—C11—H11 | 119.5 |
Br1—C3—H3 | 108.0 | C12—C11—H11 | 119.5 |
C3—C4—C5 | 112.2 (3) | C7—C12—C11 | 120.2 (4) |
C3—C4—H4B | 109.2 | C7—C12—H12 | 119.9 |
C5—C4—H4B | 109.2 | C11—C12—H12 | 119.9 |
| | | |
C6—C1—N1—O1 | −1.7 (4) | Br1—C3—C4—C5 | −67.7 (3) |
C2—C1—N1—O1 | −172.8 (2) | C3—C4—C5—C6 | −53.8 (4) |
N1—C1—C2—O2 | 111.5 (3) | N1—C1—C6—C5 | 141.2 (3) |
C6—C1—C2—O2 | −60.3 (3) | C2—C1—C6—C5 | −47.6 (4) |
N1—C1—C2—C7 | −13.2 (4) | C4—C5—C6—C1 | 48.8 (4) |
C6—C1—C2—C7 | 175.0 (3) | O2—C2—C7—C12 | −165.8 (3) |
N1—C1—C2—C3 | −141.1 (3) | C1—C2—C7—C12 | −43.1 (4) |
C6—C1—C2—C3 | 47.1 (4) | C3—C2—C7—C12 | 83.8 (4) |
C1—C2—O2—C22 | −55.1 (3) | O2—C2—C7—C8 | 18.1 (4) |
C7—C2—O2—C22 | 73.4 (3) | C1—C2—C7—C8 | 140.9 (3) |
C3—C2—O2—C22 | −168.9 (3) | C3—C2—C7—C8 | −92.3 (3) |
C2—O2—C22—C23 | −178.9 (3) | C12—C7—C8—C9 | 0.9 (5) |
O2—C2—C3—C4 | 61.4 (3) | C2—C7—C8—C9 | 177.2 (3) |
C1—C2—C3—C4 | −50.6 (4) | C7—C8—C9—C10 | 0.0 (6) |
C7—C2—C3—C4 | 178.4 (3) | C8—C9—C10—C11 | −0.9 (6) |
O2—C2—C3—Br1 | −176.51 (19) | C9—C10—C11—C12 | 0.9 (6) |
C1—C2—C3—Br1 | 71.5 (3) | C8—C7—C12—C11 | −0.9 (5) |
C7—C2—C3—Br1 | −59.5 (3) | C2—C7—C12—C11 | −177.0 (3) |
C2—C3—C4—C5 | 55.9 (4) | C10—C11—C12—C7 | −0.1 (6) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N1i | 0.82 | 2.11 | 2.829 (4) | 146 |
C6—H6C···Br1ii | 0.97 | 2.90 | 3.729 (5) | 145 |
Symmetry codes: (i) −x+3/2, −y+3/2, −z+1; (ii) x, y−1, z. |