(RS)-N-[(4-Chloro­phen­yl)(phen­yl)­meth­yl]­formamide

Zou, Z.-H.; Wang, Q.-Y.; Li, Z.-S.

doi:10.1107/S1600536808024124

(RS)-N-[(4-Chlorophenyl)(phenyl)methyl]formamide

The racemic title compound, C₁₄H₁₂ClNO, contains two molecules in the asymmetric unit. The dihedral angles between the phenyl and benzene rings are 84.03 (15) and 83.92 (13)°. The crystal structure involves intermolecular N—H

O, C—H

Cl and C—H

O hydrogen bonds, linking molecules into layers parallel to the (100) plane.

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Supporting information

	Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536808024124/rz2236sup1.cif Contains datablocks I, global
	Structure factor file (CIF format) https://doi.org/10.1107/S1600536808024124/rz2236Isup2.hkl Contains datablock I

CCDC reference: 702468

checkCIF report

Key indicators

Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.007 Å
R factor = 0.075
wR factor = 0.203
Data-to-parameter ratio = 14.4

checkCIF/PLATON results

No syntax errors found



Alert level C
PLAT094_ALERT_2_C Ratio of Maximum / Minimum Residual Density ....       2.03
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for        C26
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for         C2
PLAT340_ALERT_3_C Low Bond Precision on C-C Bonds (x 1000) Ang ...          7
PLAT790_ALERT_4_C Centre of Gravity not Within Unit Cell: Resd.  #          1
              C14 H12 Cl N O

Alert level G
PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints .......         72
PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature        293 K
PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature .        293 K
PLAT793_ALERT_4_G Check the Absolute Configuration of C7     .....          R
PLAT793_ALERT_4_G Check the Absolute Configuration of C22    .....          S

   0 ALERT level A = In general: serious problem
   0 ALERT level B = Potentially serious problem
   5 ALERT level C = Check and explain
   5 ALERT level G = General alerts; check

   2 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
   2 ALERT type 3 Indicator that the structure quality may be low
   3 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

Comment top

As part of our ongoing investigations on the asymmetric synthesis, the title compound, C₁₄H₁₂ClNO, has been obtained as a racemic mixture and structurally characterized. The compound is the key intermediate for the synthesis of levocetirizine dihydrochloride (Pflum et al., 2002; Wang et al., 2007), a high effective non-sedating H₁ receptor antagonist for the treatment of allergic diseases (Wang et al., 2005). The asymmetric unit of the title compound (Fig. 1) contains two molecules. The dihedral angles formed by planes of the phenyl and benzene rings are 84.03 (15) and 83.92 (13)°. In the crystal structure (Fig. 2), intermolecular N—H···O, C—H···Cl and C—H···O hydrogen bonds (Table 1) link molecules into layers parallel to the (100) plane.

Related literature top

For related literature, see: Pflum et al. (2002); Wang et al. (2005); , 2007).

Experimental top

All chemicals used (reagent grade) were commercially available. A mixture of (4-chlorophenyl)phenylmethanone (21.67 g) and formamide (18.02 g) was stirred at 180°C for 20 h. The mixture was cooled to room temperature, and the resulting precipitate was filtered off, washed with water and dried. Colourless crystals of the title compound suitable for X-ray analysis were obtained by slow evaporation of a 60% aqueous ethanol solution.

Computing details top

Data collection: CrystalClear (Rigaku, 2005); cell refinement: CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL/PC (Sheldrick, 2008); software used to prepare material for publication: SHELXTL/PC (Sheldrick, 2008).

Figures top

	Fig. 1. The asymmetric unit of the title compound with the atomic numbering scheme. Displacement ellipsoids are drawn at the 30% probability level.
	Fig. 2. Crystal packing of the title compound viewed along the b axis. Hydrogen bonds are shown as dashed lines.

(RS)-N-[(4-Chlorophenyl)(phenyl)methyl]formamide top

Crystal data top

C₁₄H₁₂ClNO	F(000) = 1024
M_r = 245.70	D_x = 1.297 Mg m⁻³
Monoclinic, P2₁/c	Melting point: 397(2) K
Hall symbol: -P 2ybc	Mo Kα radiation, λ = 0.71073 Å
a = 16.830 (4) Å	Cell parameters from 3463 reflections
b = 9.6318 (12) Å	θ = 2.6–27.4°
c = 16.683 (4) Å	µ = 0.29 mm⁻¹
β = 111.538 (12)°	T = 293 K
V = 2515.6 (9) Å³	Prism, colourless
Z = 8	0.25 × 0.20 × 0.20 mm

Data collection top

Rigaku Scxmini CCD area-detector diffractometer	4421 independent reflections
Radiation source: fine-focus sealed tube	2499 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.079
Detector resolution: 8.192 pixels mm^-1	θ_max = 25.0°, θ_min = 2.9°
Thin–slice ω scans	h = −20→19
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005)	k = −11→11
T_min = 0.852, T_max = 0.940	l = −19→19
20642 measured reflections

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)] = 0.075	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.202	H-atom parameters constrained
S = 1.06	w = 1/[σ²(F_o²) + (0.0904P)² + 0.5905P] where P = (F_o² + 2F_c²)/3
4421 reflections	(Δ/σ)_max < 0.001
307 parameters	Δρ_max = 0.73 e Å⁻³
72 restraints	Δρ_min = −0.36 e Å⁻³

Crystal data top

C₁₄H₁₂ClNO	V = 2515.6 (9) Å³
M_r = 245.70	Z = 8
Monoclinic, P2₁/c	Mo Kα radiation
a = 16.830 (4) Å	µ = 0.29 mm⁻¹
b = 9.6318 (12) Å	T = 293 K
c = 16.683 (4) Å	0.25 × 0.20 × 0.20 mm
β = 111.538 (12)°

Data collection top

Rigaku Scxmini CCD area-detector diffractometer	4421 independent reflections
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005)	2499 reflections with I > 2σ(I)
T_min = 0.852, T_max = 0.940	R_int = 0.079
20642 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.075	72 restraints
wR(F²) = 0.202	H-atom parameters constrained
S = 1.06	Δρ_max = 0.73 e Å⁻³
4421 reflections	Δρ_min = −0.36 e Å⁻³
307 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	U_iso*/U_eq
Cl1	0.01712 (8)	0.62109 (17)	0.23035 (11)	0.1079 (6)
N1	0.38686 (18)	0.7588 (3)	0.49582 (19)	0.0507 (8)
H1A	0.3933	0.8195	0.4609	0.061*
O1	0.43270 (19)	0.6899 (3)	0.63510 (18)	0.0748 (9)
C1	0.1291 (3)	0.8461 (5)	0.4650 (3)	0.0799 (8)
H1B	0.1094	0.9371	0.4604	0.096*
C2	0.0808 (3)	0.7419 (5)	0.4757 (3)	0.0792 (8)
C3	0.1074 (3)	0.6102 (5)	0.4809 (3)	0.0794 (7)
H3A	0.0732	0.5389	0.4879	0.095*
C4	0.1864 (3)	0.5799 (5)	0.4758 (3)	0.0767 (7)
H4A	0.2042	0.4880	0.4789	0.092*
C5	0.2386 (3)	0.6838 (5)	0.4664 (3)	0.0734 (7)
C6	0.2087 (3)	0.8181 (5)	0.4607 (3)	0.0768 (7)
H6A	0.2421	0.8908	0.4540	0.092*
C7	0.3235 (2)	0.6486 (4)	0.4612 (2)	0.0495 (10)
H7A	0.3450	0.5663	0.4972	0.059*
C8	0.4345 (2)	0.7687 (4)	0.5785 (3)	0.0556 (10)
H8A	0.4728	0.8424	0.5951	0.067*
C9	0.3201 (2)	0.6125 (4)	0.3711 (2)	0.0497 (9)
C10	0.3871 (3)	0.5419 (4)	0.3602 (3)	0.0613 (11)
H10A	0.4330	0.5137	0.4086	0.074*
C11	0.3875 (3)	0.5125 (4)	0.2798 (3)	0.0693 (12)
H11A	0.4334	0.4654	0.2741	0.083*
C12	0.3200 (3)	0.5526 (5)	0.2079 (3)	0.0680 (12)
H12A	0.3208	0.5340	0.1535	0.082*
C13	0.2516 (3)	0.6198 (5)	0.2156 (3)	0.0685 (12)
H13A	0.2057	0.6455	0.1666	0.082*
C14	0.2510 (3)	0.6495 (4)	0.2969 (3)	0.0591 (11)
H14A	0.2042	0.6944	0.3021	0.071*
C15	−0.3219 (2)	0.6980 (3)	0.3572 (2)	0.0422 (8)
C16	−0.3975 (3)	0.7165 (5)	0.3709 (3)	0.0633 (12)
H16A	−0.4486	0.6870	0.3292	0.076*
C17	−0.3984 (3)	0.7773 (5)	0.4448 (3)	0.0763 (14)
H17A	−0.4501	0.7885	0.4524	0.092*
C18	−0.3243 (3)	0.8218 (5)	0.5075 (3)	0.0727 (13)
H18A	−0.3252	0.8628	0.5576	0.087*
C19	−0.2489 (3)	0.8050 (4)	0.4951 (3)	0.0650 (12)
H19A	−0.1982	0.8354	0.5370	0.078*
C20	−0.2474 (2)	0.7433 (4)	0.4207 (2)	0.0520 (10)
H20A	−0.1955	0.7322	0.4134	0.062*
C21	−0.3933 (2)	0.4215 (4)	0.1961 (3)	0.0481 (9)
H21A	−0.4162	0.3342	0.1977	0.058*
C22	−0.3231 (2)	0.6294 (4)	0.2750 (2)	0.0419 (8)
H22A	−0.3616	0.6838	0.2268	0.050*
C23	−0.2370 (2)	0.6242 (4)	0.2647 (2)	0.0433 (9)
C24	−0.1850 (3)	0.5092 (4)	0.2863 (3)	0.0621 (11)
H24A	−0.2026	0.4308	0.3077	0.074*
C25	−0.1066 (3)	0.5083 (5)	0.2765 (3)	0.0737 (13)
H25A	−0.0721	0.4298	0.2911	0.088*
C26	−0.0805 (3)	0.6240 (5)	0.2453 (3)	0.0634 (12)
C27	−0.1291 (3)	0.7407 (5)	0.2256 (3)	0.0660 (12)
H27A	−0.1101	0.8198	0.2062	0.079*
C28	−0.2075 (3)	0.7400 (4)	0.2349 (2)	0.0553 (10)
H28A	−0.2413	0.8193	0.2208	0.066*
Cl2	−0.01756 (10)	0.7788 (3)	0.48385 (13)	0.1502 (9)
O2	−0.39511 (18)	0.4638 (3)	0.12630 (16)	0.0611 (8)
N2	−0.36098 (19)	0.4909 (3)	0.26976 (19)	0.0489 (8)
H2A	−0.3623	0.4534	0.3160	0.059*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cl1	0.0730 (8)	0.1320 (13)	0.1412 (13)	−0.0120 (8)	0.0659 (9)	−0.0164 (10)
N1	0.0546 (19)	0.051 (2)	0.0450 (18)	−0.0095 (16)	0.0168 (15)	0.0059 (16)
O1	0.079 (2)	0.092 (2)	0.0515 (17)	−0.0125 (17)	0.0221 (15)	0.0154 (17)
C1	0.0672 (14)	0.0827 (15)	0.0949 (16)	−0.0086 (13)	0.0356 (13)	−0.0070 (14)
C2	0.0665 (14)	0.0854 (15)	0.0928 (16)	−0.0105 (13)	0.0375 (13)	−0.0053 (14)
C3	0.0674 (14)	0.0848 (15)	0.0928 (15)	−0.0139 (13)	0.0374 (13)	−0.0011 (14)
C4	0.0661 (14)	0.0805 (15)	0.0910 (15)	−0.0132 (13)	0.0376 (13)	−0.0005 (14)
C5	0.0638 (14)	0.0766 (15)	0.0887 (15)	−0.0119 (12)	0.0385 (13)	−0.0025 (14)
C6	0.0653 (14)	0.0789 (15)	0.0929 (16)	−0.0101 (13)	0.0369 (13)	−0.0053 (14)
C7	0.054 (2)	0.045 (2)	0.048 (2)	−0.0030 (18)	0.0159 (18)	0.0099 (18)
C8	0.052 (2)	0.065 (3)	0.051 (2)	−0.010 (2)	0.021 (2)	−0.001 (2)
C9	0.053 (2)	0.036 (2)	0.060 (2)	−0.0040 (18)	0.0203 (19)	0.0036 (19)
C10	0.056 (3)	0.051 (2)	0.074 (3)	0.002 (2)	0.020 (2)	−0.005 (2)
C11	0.066 (3)	0.059 (3)	0.089 (3)	−0.001 (2)	0.036 (3)	−0.018 (3)
C12	0.089 (3)	0.060 (3)	0.061 (3)	−0.018 (3)	0.035 (3)	−0.023 (2)
C13	0.075 (3)	0.066 (3)	0.060 (3)	0.001 (2)	0.019 (2)	−0.002 (2)
C14	0.060 (3)	0.058 (3)	0.060 (3)	0.008 (2)	0.023 (2)	0.001 (2)
C15	0.052 (2)	0.0359 (19)	0.0396 (19)	−0.0002 (17)	0.0179 (17)	−0.0014 (16)
C16	0.054 (3)	0.080 (3)	0.059 (3)	0.003 (2)	0.025 (2)	−0.011 (2)
C17	0.076 (3)	0.092 (4)	0.072 (3)	0.015 (3)	0.041 (3)	−0.010 (3)
C18	0.107 (4)	0.066 (3)	0.053 (3)	0.021 (3)	0.039 (3)	−0.007 (2)
C19	0.077 (3)	0.066 (3)	0.049 (2)	0.006 (2)	0.019 (2)	−0.011 (2)
C20	0.057 (2)	0.051 (2)	0.049 (2)	0.0010 (19)	0.0214 (19)	−0.0039 (19)
C21	0.052 (2)	0.041 (2)	0.055 (2)	−0.0070 (18)	0.0234 (19)	−0.007 (2)
C22	0.049 (2)	0.039 (2)	0.0384 (19)	−0.0052 (17)	0.0163 (16)	−0.0016 (16)
C23	0.054 (2)	0.041 (2)	0.0353 (18)	−0.0042 (18)	0.0162 (16)	−0.0037 (17)
C24	0.064 (3)	0.047 (2)	0.083 (3)	0.004 (2)	0.037 (2)	0.005 (2)
C25	0.061 (3)	0.061 (3)	0.107 (4)	0.007 (2)	0.040 (3)	−0.006 (3)
C26	0.056 (2)	0.075 (3)	0.069 (3)	−0.013 (2)	0.035 (2)	−0.017 (3)
C27	0.069 (3)	0.074 (3)	0.066 (3)	−0.015 (3)	0.037 (2)	0.001 (2)
C28	0.065 (3)	0.047 (2)	0.060 (2)	−0.001 (2)	0.029 (2)	0.008 (2)
Cl2	0.0714 (9)	0.235 (2)	0.1627 (17)	−0.0194 (12)	0.0645 (10)	−0.0648 (16)
O2	0.086 (2)	0.0561 (17)	0.0452 (16)	−0.0077 (15)	0.0283 (15)	−0.0078 (14)
N2	0.063 (2)	0.0477 (19)	0.0403 (17)	−0.0097 (16)	0.0237 (15)	−0.0029 (15)

Geometric parameters (Å, º) top

Cl1—C26	1.751 (4)	C14—H14A	0.9300
N1—C8	1.320 (5)	C15—C20	1.382 (5)
N1—C7	1.464 (4)	C15—C16	1.385 (5)
N1—H1A	0.8600	C15—C22	1.514 (5)
O1—C8	1.220 (4)	C16—C17	1.369 (6)
C1—C2	1.345 (6)	C16—H16A	0.9300
C1—C6	1.394 (6)	C17—C18	1.371 (6)
C1—H1B	0.9300	C17—H17A	0.9300
C2—C3	1.337 (7)	C18—C19	1.368 (6)
C2—Cl2	1.746 (5)	C18—H18A	0.9300
C3—C4	1.394 (6)	C19—C20	1.385 (5)
C3—H3A	0.9300	C19—H19A	0.9300
C4—C5	1.378 (6)	C20—H20A	0.9300
C4—H4A	0.9300	C21—O2	1.224 (4)
C5—C6	1.378 (6)	C21—N2	1.327 (4)
C5—C7	1.502 (6)	C21—H21A	0.9300
C6—H6A	0.9300	C22—N2	1.467 (4)
C7—C9	1.523 (5)	C22—C23	1.521 (5)
C7—H7A	0.9800	C22—H22A	0.9800
C8—H8A	0.9300	C23—C24	1.375 (5)
C9—C10	1.385 (5)	C23—C28	1.385 (5)
C9—C14	1.397 (5)	C24—C25	1.387 (6)
C10—C11	1.373 (6)	C24—H24A	0.9300
C10—H10A	0.9300	C25—C26	1.368 (6)
C11—C12	1.370 (6)	C25—H25A	0.9300
C11—H11A	0.9300	C26—C27	1.358 (6)
C12—C13	1.367 (6)	C27—C28	1.385 (5)
C12—H12A	0.9300	C27—H27A	0.9300
C13—C14	1.390 (6)	C28—H28A	0.9300
C13—H13A	0.9300	N2—H2A	0.8600

C8—N1—C7	122.6 (3)	C20—C15—C16	117.5 (3)
C8—N1—H1A	118.7	C20—C15—C22	122.6 (3)
C7—N1—H1A	118.7	C16—C15—C22	119.8 (3)
C2—C1—C6	120.1 (5)	C17—C16—C15	121.3 (4)
C2—C1—H1B	119.9	C17—C16—H16A	119.4
C6—C1—H1B	119.9	C15—C16—H16A	119.4
C3—C2—C1	120.7 (5)	C16—C17—C18	120.9 (4)
C3—C2—Cl2	119.5 (4)	C16—C17—H17A	119.6
C1—C2—Cl2	119.7 (4)	C18—C17—H17A	119.6
C2—C3—C4	120.0 (4)	C19—C18—C17	118.8 (4)
C2—C3—H3A	120.0	C19—C18—H18A	120.6
C4—C3—H3A	120.0	C17—C18—H18A	120.6
C5—C4—C3	121.1 (5)	C18—C19—C20	120.7 (4)
C5—C4—H4A	119.4	C18—C19—H19A	119.7
C3—C4—H4A	119.4	C20—C19—H19A	119.7
C4—C5—C6	117.2 (4)	C15—C20—C19	120.9 (4)
C4—C5—C7	120.2 (4)	C15—C20—H20A	119.6
C6—C5—C7	122.6 (4)	C19—C20—H20A	119.6
C5—C6—C1	120.8 (4)	O2—C21—N2	124.9 (3)
C5—C6—H6A	119.6	O2—C21—H21A	117.6
C1—C6—H6A	119.6	N2—C21—H21A	117.6
N1—C7—C5	112.6 (3)	N2—C22—C15	108.2 (3)
N1—C7—C9	108.2 (3)	N2—C22—C23	112.0 (3)
C5—C7—C9	114.6 (3)	C15—C22—C23	114.8 (3)
N1—C7—H7A	107.0	N2—C22—H22A	107.2
C5—C7—H7A	107.0	C15—C22—H22A	107.2
C9—C7—H7A	107.0	C23—C22—H22A	107.2
O1—C8—N1	125.9 (4)	C24—C23—C28	117.7 (4)
O1—C8—H8A	117.1	C24—C23—C22	122.6 (3)
N1—C8—H8A	117.1	C28—C23—C22	119.7 (3)
C10—C9—C14	117.5 (4)	C23—C24—C25	121.1 (4)
C10—C9—C7	120.3 (3)	C23—C24—H24A	119.5
C14—C9—C7	122.2 (3)	C25—C24—H24A	119.5
C11—C10—C9	121.7 (4)	C26—C25—C24	119.4 (4)
C11—C10—H10A	119.2	C26—C25—H25A	120.3
C9—C10—H10A	119.2	C24—C25—H25A	120.3
C12—C11—C10	119.8 (4)	C27—C26—C25	121.2 (4)
C12—C11—H11A	120.1	C27—C26—Cl1	119.5 (3)
C10—C11—H11A	120.1	C25—C26—Cl1	119.4 (4)
C13—C12—C11	120.5 (4)	C26—C27—C28	118.8 (4)
C13—C12—H12A	119.8	C26—C27—H27A	120.6
C11—C12—H12A	119.8	C28—C27—H27A	120.6
C12—C13—C14	119.8 (4)	C27—C28—C23	121.8 (4)
C12—C13—H13A	120.1	C27—C28—H28A	119.1
C14—C13—H13A	120.1	C23—C28—H28A	119.1
C13—C14—C9	120.6 (4)	C21—N2—C22	122.3 (3)
C13—C14—H14A	119.7	C21—N2—H2A	118.8
C9—C14—H14A	119.7	C22—N2—H2A	118.8

C6—C1—C2—C3	−1.2 (8)	C20—C15—C16—C17	0.0 (6)
C6—C1—C2—Cl2	178.3 (4)	C22—C15—C16—C17	179.5 (4)
C1—C2—C3—C4	0.5 (8)	C15—C16—C17—C18	0.0 (7)
Cl2—C2—C3—C4	−179.0 (4)	C16—C17—C18—C19	0.2 (7)
C2—C3—C4—C5	0.7 (7)	C17—C18—C19—C20	−0.4 (7)
C3—C4—C5—C6	−1.1 (7)	C16—C15—C20—C19	−0.1 (6)
C3—C4—C5—C7	179.9 (4)	C22—C15—C20—C19	−179.7 (4)
C4—C5—C6—C1	0.4 (7)	C18—C19—C20—C15	0.4 (6)
C7—C5—C6—C1	179.3 (4)	C20—C15—C22—N2	121.4 (4)
C2—C1—C6—C5	0.8 (8)	C16—C15—C22—N2	−58.2 (4)
C8—N1—C7—C5	85.7 (4)	C20—C15—C22—C23	−4.5 (5)
C8—N1—C7—C9	−146.6 (3)	C16—C15—C22—C23	176.0 (3)
C4—C5—C7—N1	−149.9 (4)	N2—C22—C23—C24	−26.9 (5)
C6—C5—C7—N1	31.2 (6)	C15—C22—C23—C24	97.0 (4)
C4—C5—C7—C9	85.8 (5)	N2—C22—C23—C28	155.0 (3)
C6—C5—C7—C9	−93.1 (5)	C15—C22—C23—C28	−81.1 (4)
C7—N1—C8—O1	0.6 (6)	C28—C23—C24—C25	−1.5 (6)
N1—C7—C9—C10	71.5 (4)	C22—C23—C24—C25	−179.6 (4)
C5—C7—C9—C10	−161.9 (4)	C23—C24—C25—C26	0.3 (7)
N1—C7—C9—C14	−107.9 (4)	C24—C25—C26—C27	1.5 (7)
C5—C7—C9—C14	18.7 (5)	C24—C25—C26—Cl1	−178.3 (3)
C14—C9—C10—C11	2.0 (6)	C25—C26—C27—C28	−2.0 (7)
C7—C9—C10—C11	−177.5 (4)	Cl1—C26—C27—C28	177.8 (3)
C9—C10—C11—C12	−0.4 (7)	C26—C27—C28—C23	0.8 (6)
C10—C11—C12—C13	−1.1 (7)	C24—C23—C28—C27	0.9 (6)
C11—C12—C13—C14	1.0 (7)	C22—C23—C28—C27	179.1 (3)
C12—C13—C14—C9	0.6 (7)	O2—C21—N2—C22	0.0 (6)
C10—C9—C14—C13	−2.0 (6)	C15—C22—N2—C21	160.2 (3)
C7—C9—C14—C13	177.4 (4)	C23—C22—N2—C21	−72.3 (4)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
N1—H1A···O2ⁱ	0.86	2.02	2.877 (4)	174
N2—H2A···O1ⁱⁱ	0.86	2.16	2.901 (4)	144
C18—H18A···O2ⁱⁱⁱ	0.93	2.54	3.368 (5)	148
C20—H20A···Cl2	0.93	2.82	3.633 (4)	146

Symmetry codes: (i) −x, y+1/2, −z+1/2; (ii) −x, −y+1, −z+1; (iii) x, −y+3/2, z+1/2.

Experimental details

Crystal data
Chemical formula	C₁₄H₁₂ClNO
M_r	245.70
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	293
a, b, c (Å)	16.830 (4), 9.6318 (12), 16.683 (4)
β (°)	111.538 (12)
V (Å³)	2515.6 (9)
Z	8
Radiation type	Mo Kα
µ (mm⁻¹)	0.29
Crystal size (mm)	0.25 × 0.20 × 0.20

Data collection
Diffractometer	Rigaku Scxmini CCD area-detector diffractometer
Absorption correction	Multi-scan (CrystalClear; Rigaku, 2005)
T_min, T_max	0.852, 0.940
No. of measured, independent and observed [I > 2σ(I)] reflections	20642, 4421, 2499
R_int	0.079
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.075, 0.202, 1.06
No. of reflections	4421
No. of parameters	307
No. of restraints	72
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.73, −0.36

Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL/PC (Sheldrick, 2008).