2,4-Bis(2-eth­oxy­phen­yl)-3-aza­bicyclo­[3.3.1]nonan-9-one

Park, D.H.; Ramkumar, V.; Parthiban, P.

doi:10.1107/S1600536812044856

organic compounds

CRYSTALLOGRAPHIC
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ISSN: 2056-9890

Volume 68| Part 12| December 2012| Page o3282

doi:10.1107/S1600536812044856

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2,4-Bis(2-ethoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one

Dong Ho Park,^a V. Ramkumar ^b and P. Parthiban ^a ^*

^aDepartment of Biomedicinal Chemistry, Inje University, Gimhae, Gyeongnam 621 749, Republic of Korea, and ^bDepartment of Chemistry, IIT Madras, Chennai 600 036, TamilNadu, India
^*Correspondence e-mail: parthisivam@yahoo.co.in

(Received 19 September 2012; accepted 30 October 2012; online 3 November 2012)

The asymmetric unit of the title compound, C₂₄H₂₉NO₃, contains two independent molecules, which each exibit a twin-chair conformation with an equatorial orientation of the ortho-ethoxyphenyl groups but different dihedral angles [41.3 (1) and 24.1 (1)°] between the benzene rings. In the crystal, pairs of weak C—H⋯O hydrogen bonds link the two different independent molecules into dimers.

Related literature

For the synthesis and stereochemistry of 3-azabicyclo[3.3.1]nonan-9-ones, see: Park et al. (2011 ) and for their biological properties, see: Jeyaraman & Avila (1981 ); Park et al. (2012a ); Parthiban et al. (2010a ,b ; 2011a ). For similar structures, see: Park et al. (2012b ); Parthiban et al. (2009a ,b ; 2011b ). For conformational analysis, see: Kalsi (1997 ); Cremer & Pople (1975 ).

Experimental

Crystal data

C₂₄H₂₉NO₃
M_r = 379.49
Triclinic, $[P \overline 1]$
a = 9.7981 (3) Å
b = 13.6139 (5) Å
c = 16.7098 (6) Å
α = 74.363 (2)°
β = 80.464 (2)°
γ = 83.563 (2)°
V = 2111.42 (13) Å³
Z = 4
Mo Kα radiation
μ = 0.08 mm⁻¹
T = 298 K
0.35 × 0.28 × 0.22 mm

Data collection

Bruker APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2004 ) T_min = 0.973, T_max = 0.983
27579 measured reflections
9839 independent reflections
6037 reflections with I > 2σ(I)
R_int = 0.022

Refinement

R[F² > 2σ(F²)] = 0.051
wR(F²) = 0.150
S = 1.02
9839 reflections
509 parameters
H-atom parameters constrained
Δρ_max = 0.53 e Å⁻³
Δρ_min = −0.45 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C23—H23A⋯O1A	0.97	2.42	3.311 (3)	153
C23A—H23C⋯O1	0.97	2.43	3.297 (3)	149

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997 ); software used to prepare material for publication: SHELXL97.

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536812044856/cv5345sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536812044856/cv5345Isup2.hkl

Supporting information file. DOI: 10.1107/S1600536812044856/cv5345Isup3.cml

checkCIF report

Comment top

Nitrogen containing heterocycles are useful building-blocks of the construction of various pharmacologically important molecules. Since the 3-azabicyclononanes are displying diverse biological actions (Park et al., 2012a; Parthiban et al., 2010a, 2010b, 2011a; Jeyaraman & Avila, 1981), and the biological actions mainly depend on the stereochemistry of the molecules, the synthesis as well as stereochemical analysis of any biologically active molecules are of importance in the drug-design and drug-devlopement programs. Based on the above points, we synthesized the title compound, in order to examine the configurational and conformational status by single-crystal X-ray studies.

Careful examination of the asymmery parameters and torsion angles of the title compound reveal that the values are similar to its analogous compounds (Parthiban et al., 2009a, 2009b, 2011b; Park et al. 2012b). 2,4-Bis(4-ethoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one is the positional isomer of the title compound that exists in the twin-chair conformation. The impotant torsion angles of the title compound, viz., C2—C8—C6—C7 (-58.8 (2)°), C1—C2—C8—C6 (60.8 (2)°), C2—C8—C6—C5 (65.9 (2)°) and C3—C2—C8—C6 (-63.8 (2)°) insist that the bicycle exists in twin-chair conformation. However, the cyclohexanone torsion angles are more deviated than the piperidone ring as well as well the ideal chair cyclohexanone torsion angle of 56° (Kalsi, 1997). The comparision of above with the corresponding torsion angles of the para-isomer [-62.5 (2), 62.3 (2), 62.6 (2) and -62.6 (2)°, respectively] indicate that in the title compound, the cyclohexnone ring is more flattened than the cyclohexanone of its para-isomer. The above stereochemistry is further witnessed by the Cremer & Pople (1975) ring puckering parameters. For the piperidone ring of the title compound, the total puckering amplitude, Q_T is 0.5970 Å and the phase angle θ is 176.66°, for the cyclohexanone, Q_T = 0.5590 Å and θ = 163.39°. The same for the para-isomer are, Q_T = 0.5999 Å and θ = 173.84° (piperidone) and Q_T = 0.5643 Å and θ = 168.44°(cyclohexanone). Further, the orientation of the ethoxyphenyl groups on both sides of the secondary amino group are identified by their torsion angles. The torsion angle of C8—C2—C1—C9 and C8—C6—C7—C17 are 176.24 (15) and -179.42 (15)°, respectively.

The two benzene rings in two independent molecules are inclined to each other with angles of 41.3 (1) and 24.1 (1)°, respectively. In the crystal, weak intermolecular C—H···O interactions (Table 1) link independent molecules into dimer.

Related literature top

For the synthesis and stereochemistry of 3-azabicyclo[3.3.1]nonan-9-ones, see: Park et al. (2011) and for their biological properties, see: Jeyaraman & Avila (1981); Park et al. (2012a); Parthiban et al. (2010a,b; 2011a). For similar structures, see: Park et al. (2012b); Parthiban et al. (2009a,b; 2011b). For conformational analysis, see: Kalsi (1997); Cremer & Pople (1975).

Experimental top

The 2,4-bis(2-ethoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one was synthesized by a modified and an optimized double Mannich condensation in one-pot, using 2-ethoxybenzaldehyde (0.1 mol, 15.018 g/13.94 ml), cyclohexanone (0.05 mol, 4.90 g/5.18 ml) and ammonium acetate (0.075 mol, 5.78 g) in a 50 ml of absolute ethanol (Park et al., 2011). The mixture was gently warmed on a hot plate at 303–308 K (30–35° C) with moderate stirring till the complete consumption of the starting materials, which was monitored by TLC. After completion of the rection, the crude compound was separated by filtration and gently washed with 1:5 cold ethanol-ether mixture. X-ray diffraction quality crystals of the title compound were obtained by slow evaporation from ethanol.

Computing details top

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

Fig. 1. Two independent molecules of the title compound with atomic labels and displacement ellipsoids represented with 30% probability level. H atoms omitted for clarity.

2,4-Bis(2-ethoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one top

Crystal data top

C₂₄H₂₉NO₃	Z = 4
M_r = 379.49	F(000) = 816
Triclinic, P1	D_x = 1.194 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 9.7981 (3) Å	Cell parameters from 5334 reflections
b = 13.6139 (5) Å	θ = 0.0–0.0°
c = 16.7098 (6) Å	µ = 0.08 mm⁻¹
α = 74.363 (2)°	T = 298 K
β = 80.464 (2)°	Block, colourless
γ = 83.563 (2)°	0.35 × 0.28 × 0.22 mm
V = 2111.42 (13) Å³

Data collection top

Bruker APEXII CCD area-detector diffractometer	9839 independent reflections
Radiation source: fine-focus sealed tube	6037 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.022
phi and ω scans	θ_max = 28.6°, θ_min = 2.1°
Absorption correction: multi-scan (SADABS; Bruker, 2004)	h = −12→12
T_min = 0.973, T_max = 0.983	k = −17→18
27579 measured reflections	l = −21→22

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)] = 0.051	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.150	H-atom parameters constrained
S = 1.02	w = 1/[σ²(F_o²) + (0.0546P)² + 0.6801P] where P = (F_o² + 2F_c²)/3
9839 reflections	(Δ/σ)_max < 0.001
509 parameters	Δρ_max = 0.53 e Å⁻³
0 restraints	Δρ_min = −0.45 e Å⁻³

Crystal data top

C₂₄H₂₉NO₃	γ = 83.563 (2)°
M_r = 379.49	V = 2111.42 (13) Å³
Triclinic, P1	Z = 4
a = 9.7981 (3) Å	Mo Kα radiation
b = 13.6139 (5) Å	µ = 0.08 mm⁻¹
c = 16.7098 (6) Å	T = 298 K
α = 74.363 (2)°	0.35 × 0.28 × 0.22 mm
β = 80.464 (2)°

Data collection top

Bruker APEXII CCD area-detector diffractometer	9839 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2004)	6037 reflections with I > 2σ(I)
T_min = 0.973, T_max = 0.983	R_int = 0.022
27579 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.051	0 restraints
wR(F²) = 0.150	H-atom parameters constrained
S = 1.02	Δρ_max = 0.53 e Å⁻³
9839 reflections	Δρ_min = −0.45 e Å⁻³
509 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
C1	0.36743 (18)	0.85897 (14)	0.06351 (11)	0.0500 (4)
H1	0.4178	0.8488	0.0103	0.060*
C2	0.25640 (19)	0.77992 (14)	0.09612 (12)	0.0533 (4)
H2	0.1937	0.7901	0.0541	0.064*
C3	0.1701 (2)	0.78294 (16)	0.18078 (13)	0.0647 (5)
H3A	0.1321	0.8526	0.1778	0.078*
H3B	0.0927	0.7406	0.1902	0.078*
C4	0.2490 (2)	0.74703 (17)	0.25537 (13)	0.0695 (6)
H4A	0.3019	0.8022	0.2574	0.083*
H4B	0.1828	0.7322	0.3063	0.083*
C5	0.3472 (2)	0.65312 (15)	0.25377 (13)	0.0616 (5)
H5A	0.2940	0.5931	0.2713	0.074*
H5B	0.4107	0.6462	0.2941	0.074*
C6	0.4315 (2)	0.65624 (14)	0.16746 (12)	0.0536 (5)
H6	0.4811	0.5892	0.1692	0.064*
C7	0.53772 (18)	0.73929 (14)	0.13630 (11)	0.0488 (4)
H7	0.5881	0.7323	0.0821	0.059*
C8	0.3305 (2)	0.67594 (15)	0.10576 (13)	0.0586 (5)
C9	0.29786 (19)	0.96590 (14)	0.04698 (13)	0.0554 (5)
C10	0.2861 (2)	1.02513 (16)	0.10223 (16)	0.0747 (6)
H10	0.3272	1.0012	0.1508	0.090*
C11	0.2138 (3)	1.12062 (19)	0.0872 (2)	0.0993 (9)
H11	0.2060	1.1604	0.1253	0.119*
C12	0.1538 (3)	1.15537 (18)	0.0147 (2)	0.0938 (9)
H12	0.1057	1.2194	0.0039	0.113*
C13	0.1635 (2)	1.09799 (18)	−0.04144 (17)	0.0791 (7)
H13	0.1215	1.1224	−0.0897	0.095*
C14	0.2359 (2)	1.00353 (16)	−0.02670 (14)	0.0635 (5)
C15	0.1763 (3)	0.9619 (2)	−0.14731 (16)	0.0920 (8)
H15A	0.2042	1.0245	−0.1879	0.110*
H15B	0.0777	0.9700	−0.1282	0.110*
C16	0.2073 (4)	0.8738 (3)	−0.1860 (2)	0.1269 (12)
H16A	0.3050	0.8670	−0.2050	0.190*
H16B	0.1571	0.8854	−0.2327	0.190*
H16C	0.1799	0.8123	−0.1451	0.190*
C17	0.64188 (18)	0.72424 (14)	0.19648 (11)	0.0486 (4)
C18	0.75334 (18)	0.65048 (14)	0.19377 (11)	0.0505 (4)
C19	0.8500 (2)	0.63614 (16)	0.24840 (12)	0.0581 (5)
H19	0.9245	0.5878	0.2460	0.070*
C20	0.8364 (2)	0.69305 (18)	0.30616 (13)	0.0651 (6)
H20	0.9017	0.6828	0.3427	0.078*
C21	0.7274 (2)	0.76473 (18)	0.31044 (13)	0.0671 (6)
H21	0.7179	0.8028	0.3499	0.081*
C22	0.6315 (2)	0.77980 (16)	0.25514 (12)	0.0585 (5)
H22	0.5580	0.8289	0.2578	0.070*
C23	0.8671 (2)	0.51955 (16)	0.12899 (14)	0.0691 (6)
H23A	0.8744	0.4733	0.1838	0.083*
H23B	0.9548	0.5504	0.1076	0.083*
C24	0.8344 (3)	0.4629 (2)	0.0709 (2)	0.1067 (10)
H24A	0.7482	0.4319	0.0930	0.160*
H24B	0.9071	0.4108	0.0650	0.160*
H24C	0.8267	0.5094	0.0170	0.160*
C1A	0.64687 (16)	0.15039 (12)	0.44479 (10)	0.0422 (4)
H1A	0.6561	0.1204	0.3968	0.051*
C2A	0.76566 (17)	0.22198 (13)	0.42932 (11)	0.0473 (4)
H2A	0.8545	0.1818	0.4231	0.057*
C3A	0.7659 (2)	0.27739 (14)	0.49824 (12)	0.0556 (5)
H3A1	0.7619	0.2270	0.5520	0.067*
H3A2	0.8529	0.3093	0.4883	0.067*
C4A	0.6469 (2)	0.35883 (15)	0.50361 (12)	0.0602 (5)
H4A1	0.6689	0.4024	0.5364	0.072*
H4A2	0.5636	0.3256	0.5329	0.072*
C5A	0.6178 (2)	0.42519 (14)	0.41788 (13)	0.0589 (5)
H5A1	0.6878	0.4745	0.3966	0.071*
H5A2	0.5285	0.4630	0.4247	0.071*
C6A	0.61683 (18)	0.36447 (13)	0.35247 (11)	0.0484 (4)
H6A	0.6112	0.4128	0.2976	0.058*
C7A	0.50066 (17)	0.28949 (12)	0.37073 (10)	0.0426 (4)
H7A	0.5136	0.2557	0.3248	0.051*
C8A	0.75265 (18)	0.30110 (14)	0.34832 (12)	0.0496 (4)
C9A	0.65574 (18)	0.06396 (12)	0.52316 (11)	0.0450 (4)
C10A	0.5745 (2)	0.06544 (14)	0.59797 (12)	0.0576 (5)
H10A	0.5097	0.1203	0.6007	0.069*
C11A	0.5869 (3)	−0.01343 (16)	0.66985 (13)	0.0712 (6)
H11A	0.5304	−0.0116	0.7200	0.085*
C12A	0.6830 (3)	−0.09377 (15)	0.66610 (15)	0.0729 (6)
H12A	0.6926	−0.1461	0.7143	0.087*
C13A	0.7656 (2)	−0.09789 (14)	0.59183 (15)	0.0638 (6)
H13A	0.8301	−0.1531	0.5898	0.077*
C14A	0.75241 (19)	−0.01967 (12)	0.52014 (12)	0.0503 (4)
C15A	0.9384 (2)	−0.09232 (16)	0.43565 (16)	0.0736 (7)
H15C	0.9027	−0.1594	0.4497	0.088*
H15D	1.0042	−0.0933	0.4734	0.088*
C16A	1.0074 (3)	−0.0658 (2)	0.34722 (17)	0.0906 (8)
H16D	0.9444	−0.0723	0.3109	0.136*
H16E	1.0885	−0.1114	0.3413	0.136*
H16F	1.0339	0.0033	0.3323	0.136*
C17A	0.35634 (17)	0.34232 (12)	0.37438 (10)	0.0419 (4)
C18A	0.28975 (18)	0.36874 (12)	0.30268 (11)	0.0451 (4)
C19A	0.15377 (19)	0.41012 (14)	0.30671 (13)	0.0563 (5)
H19A	0.1086	0.4249	0.2596	0.068*
C20A	0.0859 (2)	0.42923 (15)	0.37999 (14)	0.0643 (6)
H20A	−0.0052	0.4574	0.3822	0.077*
C21A	0.1504 (2)	0.40738 (16)	0.45031 (13)	0.0637 (5)
H21A	0.1046	0.4224	0.4995	0.076*
C22A	0.28471 (19)	0.36263 (14)	0.44692 (12)	0.0538 (5)
H22A	0.3276	0.3459	0.4950	0.065*
C23A	0.3037 (2)	0.36747 (16)	0.15767 (12)	0.0666 (6)
H23C	0.2675	0.4381	0.1408	0.080*
H23D	0.2278	0.3237	0.1677	0.080*
C24A	0.4124 (3)	0.3436 (2)	0.09121 (15)	0.1005 (9)
H24D	0.4836	0.3907	0.0790	0.151*
H24E	0.3719	0.3496	0.0414	0.151*
H24F	0.4520	0.2751	0.1102	0.151*
N1	0.46630 (15)	0.84156 (11)	0.12323 (9)	0.0500 (4)
H1B	0.4809	0.8864	0.1480	0.060*
N1A	0.51362 (13)	0.21006 (10)	0.44872 (8)	0.0422 (3)
H1A1	0.4502	0.1998	0.4917	0.051*
O1	0.3081 (2)	0.61501 (12)	0.06929 (11)	0.0909 (5)
O2	0.25195 (18)	0.94051 (14)	−0.07861 (10)	0.0878 (5)
O3	0.75755 (14)	0.59694 (11)	0.13539 (9)	0.0661 (4)
O1A	0.84094 (15)	0.31195 (12)	0.28738 (9)	0.0741 (4)
O2A	0.82815 (14)	−0.01692 (10)	0.44357 (9)	0.0644 (4)
O3A	0.36692 (14)	0.35032 (10)	0.23189 (8)	0.0589 (3)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
C1	0.0456 (10)	0.0543 (10)	0.0472 (10)	−0.0013 (8)	−0.0110 (8)	−0.0063 (8)
C2	0.0506 (10)	0.0540 (11)	0.0582 (11)	−0.0054 (8)	−0.0189 (9)	−0.0116 (9)
C3	0.0476 (11)	0.0613 (12)	0.0793 (15)	−0.0091 (9)	−0.0014 (10)	−0.0105 (11)
C4	0.0655 (13)	0.0780 (14)	0.0604 (13)	−0.0117 (11)	0.0062 (10)	−0.0165 (11)
C5	0.0645 (12)	0.0567 (11)	0.0587 (12)	−0.0146 (10)	−0.0085 (10)	−0.0025 (9)
C6	0.0604 (11)	0.0431 (9)	0.0590 (11)	0.0024 (8)	−0.0152 (9)	−0.0143 (8)
C7	0.0473 (10)	0.0551 (10)	0.0418 (9)	0.0023 (8)	−0.0075 (8)	−0.0106 (8)
C8	0.0666 (13)	0.0530 (11)	0.0600 (12)	−0.0098 (9)	−0.0135 (10)	−0.0162 (9)
C9	0.0470 (10)	0.0486 (10)	0.0663 (12)	−0.0060 (8)	−0.0142 (9)	−0.0028 (9)
C10	0.0813 (15)	0.0523 (12)	0.0957 (17)	−0.0022 (11)	−0.0362 (13)	−0.0146 (12)
C11	0.116 (2)	0.0553 (14)	0.139 (3)	0.0024 (14)	−0.049 (2)	−0.0305 (15)
C12	0.0855 (18)	0.0458 (12)	0.140 (3)	0.0024 (12)	−0.0352 (17)	0.0019 (15)
C13	0.0705 (15)	0.0619 (14)	0.0921 (18)	−0.0055 (11)	−0.0250 (13)	0.0106 (13)
C14	0.0512 (11)	0.0592 (12)	0.0702 (14)	−0.0024 (9)	−0.0175 (10)	0.0052 (11)
C15	0.0973 (19)	0.0965 (19)	0.0769 (16)	−0.0138 (15)	−0.0428 (14)	0.0078 (14)
C16	0.162 (3)	0.133 (3)	0.100 (2)	0.015 (2)	−0.057 (2)	−0.041 (2)
C17	0.0442 (10)	0.0558 (10)	0.0414 (9)	−0.0019 (8)	−0.0066 (7)	−0.0052 (8)
C18	0.0470 (10)	0.0554 (10)	0.0417 (10)	−0.0013 (8)	−0.0052 (8)	−0.0015 (8)
C19	0.0463 (10)	0.0652 (12)	0.0538 (11)	0.0013 (9)	−0.0092 (9)	−0.0010 (10)
C20	0.0511 (12)	0.0883 (15)	0.0521 (12)	−0.0092 (11)	−0.0147 (9)	−0.0056 (11)
C21	0.0571 (12)	0.0916 (16)	0.0579 (12)	−0.0059 (11)	−0.0111 (10)	−0.0261 (11)
C22	0.0492 (11)	0.0708 (13)	0.0559 (11)	−0.0002 (9)	−0.0092 (9)	−0.0172 (10)
C23	0.0626 (13)	0.0655 (13)	0.0713 (14)	0.0150 (10)	−0.0071 (11)	−0.0133 (11)
C24	0.108 (2)	0.103 (2)	0.124 (2)	0.0248 (17)	−0.0270 (19)	−0.0614 (19)
C1A	0.0416 (9)	0.0383 (8)	0.0458 (9)	0.0075 (7)	−0.0142 (7)	−0.0083 (7)
C2A	0.0358 (9)	0.0492 (10)	0.0518 (10)	0.0056 (7)	−0.0110 (7)	−0.0050 (8)
C3A	0.0541 (11)	0.0552 (11)	0.0580 (11)	−0.0090 (9)	−0.0212 (9)	−0.0052 (9)
C4A	0.0675 (13)	0.0555 (11)	0.0641 (13)	−0.0064 (10)	−0.0174 (10)	−0.0208 (10)
C5A	0.0560 (11)	0.0425 (10)	0.0771 (14)	−0.0019 (8)	−0.0147 (10)	−0.0108 (9)
C6A	0.0466 (10)	0.0443 (9)	0.0452 (10)	0.0034 (8)	−0.0100 (8)	0.0037 (8)
C7A	0.0428 (9)	0.0427 (9)	0.0412 (9)	0.0071 (7)	−0.0144 (7)	−0.0079 (7)
C8A	0.0421 (10)	0.0531 (10)	0.0502 (11)	−0.0038 (8)	−0.0078 (8)	−0.0064 (8)
C9A	0.0457 (9)	0.0381 (9)	0.0504 (10)	0.0002 (7)	−0.0169 (8)	−0.0054 (7)
C10A	0.0653 (12)	0.0477 (10)	0.0550 (12)	0.0000 (9)	−0.0130 (10)	−0.0038 (9)
C11A	0.0909 (16)	0.0619 (13)	0.0550 (12)	−0.0117 (12)	−0.0132 (11)	−0.0008 (10)
C12A	0.1019 (18)	0.0451 (11)	0.0682 (15)	−0.0135 (12)	−0.0378 (13)	0.0100 (10)
C13A	0.0768 (14)	0.0348 (9)	0.0820 (15)	0.0025 (9)	−0.0395 (12)	−0.0045 (10)
C14A	0.0511 (10)	0.0382 (9)	0.0642 (12)	0.0023 (8)	−0.0258 (9)	−0.0091 (8)
C15A	0.0755 (14)	0.0576 (12)	0.1014 (18)	0.0314 (11)	−0.0464 (13)	−0.0378 (12)
C16A	0.0789 (16)	0.105 (2)	0.100 (2)	0.0374 (15)	−0.0292 (15)	−0.0553 (16)
C17A	0.0396 (9)	0.0363 (8)	0.0480 (10)	0.0039 (7)	−0.0129 (7)	−0.0064 (7)
C18A	0.0473 (10)	0.0348 (8)	0.0513 (10)	0.0008 (7)	−0.0163 (8)	−0.0036 (7)
C19A	0.0483 (11)	0.0501 (10)	0.0670 (13)	0.0043 (8)	−0.0256 (10)	−0.0016 (9)
C20A	0.0410 (10)	0.0598 (12)	0.0801 (15)	0.0105 (9)	−0.0118 (10)	−0.0011 (11)
C21A	0.0517 (11)	0.0672 (13)	0.0613 (12)	0.0137 (10)	−0.0016 (9)	−0.0089 (10)
C22A	0.0496 (10)	0.0565 (11)	0.0526 (11)	0.0085 (9)	−0.0146 (9)	−0.0100 (9)
C23A	0.0905 (16)	0.0575 (12)	0.0560 (12)	0.0004 (11)	−0.0338 (11)	−0.0100 (10)
C24A	0.122 (2)	0.126 (2)	0.0593 (15)	0.0061 (19)	−0.0238 (15)	−0.0328 (15)
N1	0.0488 (8)	0.0465 (8)	0.0555 (9)	−0.0023 (7)	−0.0180 (7)	−0.0085 (7)
N1A	0.0365 (7)	0.0422 (7)	0.0420 (8)	0.0067 (6)	−0.0079 (6)	−0.0033 (6)
O1	0.1271 (15)	0.0672 (10)	0.0981 (12)	−0.0053 (9)	−0.0477 (11)	−0.0361 (9)
O2	0.0957 (12)	0.1031 (13)	0.0630 (10)	0.0266 (10)	−0.0349 (9)	−0.0180 (9)
O3	0.0636 (9)	0.0718 (9)	0.0633 (9)	0.0197 (7)	−0.0188 (7)	−0.0218 (7)
O1A	0.0576 (8)	0.0869 (11)	0.0582 (9)	0.0040 (8)	0.0064 (7)	0.0023 (8)
O2A	0.0614 (8)	0.0535 (8)	0.0740 (10)	0.0239 (6)	−0.0188 (7)	−0.0146 (7)
O3A	0.0659 (8)	0.0636 (8)	0.0467 (7)	0.0129 (7)	−0.0236 (6)	−0.0106 (6)

Geometric parameters (Å, º) top

C1—N1	1.460 (2)	C1A—C9A	1.514 (2)
C1—C9	1.511 (3)	C1A—C2A	1.546 (2)
C1—C2	1.545 (3)	C1A—H1A	0.9800
C1—H1	0.9800	C2A—C8A	1.500 (2)
C2—C8	1.497 (3)	C2A—C3A	1.538 (3)
C2—C3	1.531 (3)	C2A—H2A	0.9800
C2—H2	0.9800	C3A—C4A	1.525 (3)
C3—C4	1.516 (3)	C3A—H3A1	0.9700
C3—H3A	0.9700	C3A—H3A2	0.9700
C3—H3B	0.9700	C4A—C5A	1.526 (3)
C4—C5	1.515 (3)	C4A—H4A1	0.9700
C4—H4A	0.9700	C4A—H4A2	0.9700
C4—H4B	0.9700	C5A—C6A	1.540 (3)
C5—C6	1.531 (3)	C5A—H5A1	0.9700
C5—H5A	0.9700	C5A—H5A2	0.9700
C5—H5B	0.9700	C6A—C8A	1.505 (2)
C6—C8	1.498 (3)	C6A—C7A	1.552 (2)
C6—C7	1.549 (3)	C6A—H6A	0.9800
C6—H6	0.9800	C7A—N1A	1.466 (2)
C7—N1	1.464 (2)	C7A—C17A	1.513 (2)
C7—C17	1.509 (2)	C7A—H7A	0.9800
C7—H7	0.9800	C8A—O1A	1.210 (2)
C8—O1	1.210 (2)	C9A—C10A	1.370 (3)
C9—C10	1.364 (3)	C9A—C14A	1.403 (2)
C9—C14	1.409 (3)	C10A—C11A	1.391 (3)
C10—C11	1.390 (3)	C10A—H10A	0.9300
C10—H10	0.9300	C11A—C12A	1.368 (3)
C11—C12	1.380 (4)	C11A—H11A	0.9300
C11—H11	0.9300	C12A—C13A	1.376 (3)
C12—C13	1.359 (4)	C12A—H12A	0.9300
C12—H12	0.9300	C13A—C14A	1.385 (3)
C13—C14	1.378 (3)	C13A—H13A	0.9300
C13—H13	0.9300	C14A—O2A	1.362 (2)
C14—O2	1.356 (3)	C15A—O2A	1.420 (2)
C15—O2	1.416 (3)	C15A—C16A	1.485 (3)
C15—C16	1.489 (4)	C15A—H15C	0.9700
C15—H15A	0.9700	C15A—H15D	0.9700
C15—H15B	0.9700	C16A—H16D	0.9600
C16—H16A	0.9600	C16A—H16E	0.9600
C16—H16B	0.9600	C16A—H16F	0.9600
C16—H16C	0.9600	C17A—C22A	1.376 (2)
C17—C22	1.376 (3)	C17A—C18A	1.402 (2)
C17—C18	1.402 (2)	C18A—O3A	1.362 (2)
C18—O3	1.359 (2)	C18A—C19A	1.385 (2)
C18—C19	1.385 (3)	C19A—C20A	1.369 (3)
C19—C20	1.374 (3)	C19A—H19A	0.9300
C19—H19	0.9300	C20A—C21A	1.373 (3)
C20—C21	1.370 (3)	C20A—H20A	0.9300
C20—H20	0.9300	C21A—C22A	1.386 (3)
C21—C22	1.386 (3)	C21A—H21A	0.9300
C21—H21	0.9300	C22A—H22A	0.9300
C22—H22	0.9300	C23A—O3A	1.429 (2)
C23—O3	1.429 (2)	C23A—C24A	1.482 (3)
C23—C24	1.484 (3)	C23A—H23C	0.9700
C23—H23A	0.9700	C23A—H23D	0.9700
C23—H23B	0.9700	C24A—H24D	0.9600
C24—H24A	0.9600	C24A—H24E	0.9600
C24—H24B	0.9600	C24A—H24F	0.9600
C24—H24C	0.9600	N1—H1B	0.8600
C1A—N1A	1.460 (2)	N1A—H1A1	0.8600

N1—C1—C9	112.73 (15)	C2A—C1A—H1A	108.0
N1—C1—C2	109.67 (14)	C8A—C2A—C3A	108.26 (15)
C9—C1—C2	109.74 (14)	C8A—C2A—C1A	107.36 (13)
N1—C1—H1	108.2	C3A—C2A—C1A	115.16 (15)
C9—C1—H1	108.2	C8A—C2A—H2A	108.6
C2—C1—H1	108.2	C3A—C2A—H2A	108.6
C8—C2—C3	107.69 (16)	C1A—C2A—H2A	108.6
C8—C2—C1	107.31 (15)	C4A—C3A—C2A	114.66 (15)
C3—C2—C1	115.21 (16)	C4A—C3A—H3A1	108.6
C8—C2—H2	108.8	C2A—C3A—H3A1	108.6
C3—C2—H2	108.8	C4A—C3A—H3A2	108.6
C1—C2—H2	108.8	C2A—C3A—H3A2	108.6
C4—C3—C2	114.79 (16)	H3A1—C3A—H3A2	107.6
C4—C3—H3A	108.6	C3A—C4A—C5A	113.24 (17)
C2—C3—H3A	108.6	C3A—C4A—H4A1	108.9
C4—C3—H3B	108.6	C5A—C4A—H4A1	108.9
C2—C3—H3B	108.6	C3A—C4A—H4A2	108.9
H3A—C3—H3B	107.5	C5A—C4A—H4A2	108.9
C5—C4—C3	114.22 (18)	H4A1—C4A—H4A2	107.7
C5—C4—H4A	108.7	C4A—C5A—C6A	113.95 (15)
C3—C4—H4A	108.7	C4A—C5A—H5A1	108.8
C5—C4—H4B	108.7	C6A—C5A—H5A1	108.8
C3—C4—H4B	108.7	C4A—C5A—H5A2	108.8
H4A—C4—H4B	107.6	C6A—C5A—H5A2	108.8
C4—C5—C6	113.58 (16)	H5A1—C5A—H5A2	107.7
C4—C5—H5A	108.8	C8A—C6A—C5A	107.13 (15)
C6—C5—H5A	108.8	C8A—C6A—C7A	106.65 (14)
C4—C5—H5B	108.8	C5A—C6A—C7A	116.51 (15)
C6—C5—H5B	108.8	C8A—C6A—H6A	108.8
H5A—C5—H5B	107.7	C5A—C6A—H6A	108.8
C8—C6—C5	107.26 (16)	C7A—C6A—H6A	108.8
C8—C6—C7	108.30 (15)	N1A—C7A—C17A	110.19 (13)
C5—C6—C7	115.01 (15)	N1A—C7A—C6A	110.42 (13)
C8—C6—H6	108.7	C17A—C7A—C6A	113.17 (13)
C5—C6—H6	108.7	N1A—C7A—H7A	107.6
C7—C6—H6	108.7	C17A—C7A—H7A	107.6
N1—C7—C17	111.45 (14)	C6A—C7A—H7A	107.6
N1—C7—C6	110.49 (14)	O1A—C8A—C2A	123.74 (16)
C17—C7—C6	110.87 (14)	O1A—C8A—C6A	124.56 (16)
N1—C7—H7	108.0	C2A—C8A—C6A	111.70 (15)
C17—C7—H7	108.0	C10A—C9A—C14A	118.50 (16)
C6—C7—H7	108.0	C10A—C9A—C1A	122.21 (15)
O1—C8—C2	123.55 (19)	C14A—C9A—C1A	119.28 (16)
O1—C8—C6	124.69 (19)	C9A—C10A—C11A	121.32 (19)
C2—C8—C6	111.73 (15)	C9A—C10A—H10A	119.3
C10—C9—C14	118.76 (19)	C11A—C10A—H10A	119.3
C10—C9—C1	122.92 (18)	C12A—C11A—C10A	119.4 (2)
C14—C9—C1	118.23 (18)	C12A—C11A—H11A	120.3
C9—C10—C11	121.2 (2)	C10A—C11A—H11A	120.3
C9—C10—H10	119.4	C11A—C12A—C13A	120.68 (19)
C11—C10—H10	119.4	C11A—C12A—H12A	119.7
C12—C11—C10	118.8 (3)	C13A—C12A—H12A	119.7
C12—C11—H11	120.6	C12A—C13A—C14A	119.83 (19)
C10—C11—H11	120.6	C12A—C13A—H13A	120.1
C13—C12—C11	121.3 (2)	C14A—C13A—H13A	120.1
C13—C12—H12	119.3	O2A—C14A—C13A	124.40 (17)
C11—C12—H12	119.3	O2A—C14A—C9A	115.37 (15)
C12—C13—C14	119.9 (2)	C13A—C14A—C9A	120.23 (19)
C12—C13—H13	120.1	O2A—C15A—C16A	107.61 (18)
C14—C13—H13	120.1	O2A—C15A—H15C	110.2
O2—C14—C13	124.5 (2)	C16A—C15A—H15C	110.2
O2—C14—C9	115.44 (18)	O2A—C15A—H15D	110.2
C13—C14—C9	120.1 (2)	C16A—C15A—H15D	110.2
O2—C15—C16	107.1 (2)	H15C—C15A—H15D	108.5
O2—C15—H15A	110.3	C15A—C16A—H16D	109.5
C16—C15—H15A	110.3	C15A—C16A—H16E	109.5
O2—C15—H15B	110.3	H16D—C16A—H16E	109.5
C16—C15—H15B	110.3	C15A—C16A—H16F	109.5
H15A—C15—H15B	108.6	H16D—C16A—H16F	109.5
C15—C16—H16A	109.5	H16E—C16A—H16F	109.5
C15—C16—H16B	109.5	C22A—C17A—C18A	118.05 (15)
H16A—C16—H16B	109.5	C22A—C17A—C7A	122.34 (15)
C15—C16—H16C	109.5	C18A—C17A—C7A	119.57 (15)
H16A—C16—H16C	109.5	O3A—C18A—C19A	124.10 (16)
H16B—C16—H16C	109.5	O3A—C18A—C17A	115.66 (14)
C22—C17—C18	118.06 (17)	C19A—C18A—C17A	120.25 (17)
C22—C17—C7	122.51 (16)	C20A—C19A—C18A	119.99 (18)
C18—C17—C7	119.43 (16)	C20A—C19A—H19A	120.0
O3—C18—C19	124.35 (17)	C18A—C19A—H19A	120.0
O3—C18—C17	115.60 (16)	C19A—C20A—C21A	120.89 (18)
C19—C18—C17	120.05 (18)	C19A—C20A—H20A	119.6
C20—C19—C18	120.28 (19)	C21A—C20A—H20A	119.6
C20—C19—H19	119.9	C20A—C21A—C22A	118.97 (19)
C18—C19—H19	119.9	C20A—C21A—H21A	120.5
C21—C20—C19	120.57 (19)	C22A—C21A—H21A	120.5
C21—C20—H20	119.7	C17A—C22A—C21A	121.78 (17)
C19—C20—H20	119.7	C17A—C22A—H22A	119.1
C20—C21—C22	119.1 (2)	C21A—C22A—H22A	119.1
C20—C21—H21	120.4	O3A—C23A—C24A	107.22 (18)
C22—C21—H21	120.4	O3A—C23A—H23C	110.3
C17—C22—C21	121.93 (19)	C24A—C23A—H23C	110.3
C17—C22—H22	119.0	O3A—C23A—H23D	110.3
C21—C22—H22	119.0	C24A—C23A—H23D	110.3
O3—C23—C24	107.78 (19)	H23C—C23A—H23D	108.5
O3—C23—H23A	110.2	C23A—C24A—H24D	109.5
C24—C23—H23A	110.2	C23A—C24A—H24E	109.5
O3—C23—H23B	110.2	H24D—C24A—H24E	109.5
C24—C23—H23B	110.2	C23A—C24A—H24F	109.5
H23A—C23—H23B	108.5	H24D—C24A—H24F	109.5
C23—C24—H24A	109.5	H24E—C24A—H24F	109.5
C23—C24—H24B	109.5	C1—N1—C7	112.51 (14)
H24A—C24—H24B	109.5	C1—N1—H1B	123.7
C23—C24—H24C	109.5	C7—N1—H1B	123.7
H24A—C24—H24C	109.5	C1A—N1A—C7A	112.04 (13)
H24B—C24—H24C	109.5	C1A—N1A—H1A1	124.0
N1A—C1A—C9A	111.76 (14)	C7A—N1A—H1A1	124.0
N1A—C1A—C2A	109.47 (13)	C14—O2—C15	120.69 (19)
C9A—C1A—C2A	111.38 (13)	C18—O3—C23	119.19 (15)
N1A—C1A—H1A	108.0	C14A—O2A—C15A	119.74 (16)
C9A—C1A—H1A	108.0	C18A—O3A—C23A	119.32 (15)

N1—C1—C2—C8	−59.41 (19)	C8A—C6A—C7A—N1A	57.59 (17)
C9—C1—C2—C8	176.24 (15)	C5A—C6A—C7A—N1A	−61.93 (18)
N1—C1—C2—C3	60.5 (2)	C8A—C6A—C7A—C17A	−178.36 (14)
C9—C1—C2—C3	−63.9 (2)	C5A—C6A—C7A—C17A	62.12 (19)
C8—C2—C3—C4	50.3 (2)	C3A—C2A—C8A—O1A	116.7 (2)
C1—C2—C3—C4	−69.4 (2)	C1A—C2A—C8A—O1A	−118.4 (2)
C2—C3—C4—C5	−41.6 (2)	C3A—C2A—C8A—C6A	−63.49 (19)
C3—C4—C5—C6	43.3 (2)	C1A—C2A—C8A—C6A	61.42 (19)
C4—C5—C6—C8	−53.8 (2)	C5A—C6A—C8A—O1A	−115.0 (2)
C4—C5—C6—C7	66.7 (2)	C7A—C6A—C8A—O1A	119.6 (2)
C8—C6—C7—N1	55.34 (19)	C5A—C6A—C8A—C2A	65.14 (19)
C5—C6—C7—N1	−64.60 (19)	C7A—C6A—C8A—C2A	−60.28 (18)
C8—C6—C7—C17	179.42 (15)	N1A—C1A—C9A—C10A	−22.4 (2)
C5—C6—C7—C17	59.5 (2)	C2A—C1A—C9A—C10A	100.38 (19)
C3—C2—C8—O1	114.5 (2)	N1A—C1A—C9A—C14A	159.10 (15)
C1—C2—C8—O1	−120.9 (2)	C2A—C1A—C9A—C14A	−78.10 (19)
C3—C2—C8—C6	−63.8 (2)	C14A—C9A—C10A—C11A	0.3 (3)
C1—C2—C8—C6	60.8 (2)	C1A—C9A—C10A—C11A	−178.19 (18)
C5—C6—C8—O1	−112.5 (2)	C9A—C10A—C11A—C12A	0.6 (3)
C7—C6—C8—O1	122.8 (2)	C10A—C11A—C12A—C13A	−1.0 (3)
C5—C6—C8—C2	65.9 (2)	C11A—C12A—C13A—C14A	0.5 (3)
C7—C6—C8—C2	−58.8 (2)	C12A—C13A—C14A—O2A	−179.41 (18)
N1—C1—C9—C10	−23.5 (3)	C12A—C13A—C14A—C9A	0.4 (3)
C2—C1—C9—C10	99.1 (2)	C10A—C9A—C14A—O2A	179.03 (16)
N1—C1—C9—C14	160.12 (16)	C1A—C9A—C14A—O2A	−2.4 (2)
C2—C1—C9—C14	−77.3 (2)	C10A—C9A—C14A—C13A	−0.8 (3)
C14—C9—C10—C11	0.5 (3)	C1A—C9A—C14A—C13A	177.77 (16)
C1—C9—C10—C11	−175.9 (2)	N1A—C7A—C17A—C22A	37.4 (2)
C9—C10—C11—C12	−0.3 (4)	C6A—C7A—C17A—C22A	−86.8 (2)
C10—C11—C12—C13	0.4 (4)	N1A—C7A—C17A—C18A	−140.27 (15)
C11—C12—C13—C14	−0.7 (4)	C6A—C7A—C17A—C18A	95.57 (18)
C12—C13—C14—O2	−179.9 (2)	C22A—C17A—C18A—O3A	177.77 (15)
C12—C13—C14—C9	1.0 (3)	C7A—C17A—C18A—O3A	−4.5 (2)
C10—C9—C14—O2	180.0 (2)	C22A—C17A—C18A—C19A	−2.6 (2)
C1—C9—C14—O2	−3.5 (3)	C7A—C17A—C18A—C19A	175.13 (15)
C10—C9—C14—C13	−0.8 (3)	O3A—C18A—C19A—C20A	−177.73 (17)
C1—C9—C14—C13	175.74 (18)	C17A—C18A—C19A—C20A	2.7 (3)
N1—C7—C17—C22	24.0 (2)	C18A—C19A—C20A—C21A	−0.4 (3)
C6—C7—C17—C22	−99.5 (2)	C19A—C20A—C21A—C22A	−1.9 (3)
N1—C7—C17—C18	−156.54 (16)	C18A—C17A—C22A—C21A	0.3 (3)
C6—C7—C17—C18	79.9 (2)	C7A—C17A—C22A—C21A	−177.36 (18)
C22—C17—C18—O3	179.19 (17)	C20A—C21A—C22A—C17A	1.9 (3)
C7—C17—C18—O3	−0.3 (2)	C9—C1—N1—C7	−177.56 (15)
C22—C17—C18—C19	−0.8 (3)	C2—C1—N1—C7	59.85 (19)
C7—C17—C18—C19	179.73 (17)	C17—C7—N1—C1	178.51 (14)
O3—C18—C19—C20	−179.18 (18)	C6—C7—N1—C1	−57.74 (19)
C17—C18—C19—C20	0.8 (3)	C9A—C1A—N1A—C7A	−176.10 (13)
C18—C19—C20—C21	−0.1 (3)	C2A—C1A—N1A—C7A	60.01 (17)
C19—C20—C21—C22	−0.6 (3)	C17A—C7A—N1A—C1A	174.44 (13)
C18—C17—C22—C21	0.1 (3)	C6A—C7A—N1A—C1A	−59.81 (17)
C7—C17—C22—C21	179.55 (18)	C13—C14—O2—C15	−9.5 (3)
C20—C21—C22—C17	0.6 (3)	C9—C14—O2—C15	169.7 (2)
N1A—C1A—C2A—C8A	−58.99 (18)	C16—C15—O2—C14	−174.7 (2)
C9A—C1A—C2A—C8A	176.90 (14)	C19—C18—O3—C23	0.6 (3)
N1A—C1A—C2A—C3A	61.64 (18)	C17—C18—O3—C23	−179.40 (17)
C9A—C1A—C2A—C3A	−62.47 (18)	C24—C23—O3—C18	171.1 (2)
C8A—C2A—C3A—C4A	50.9 (2)	C13A—C14A—O2A—C15A	−6.7 (3)
C1A—C2A—C3A—C4A	−69.3 (2)	C9A—C14A—O2A—C15A	173.51 (16)
C2A—C3A—C4A—C5A	−42.5 (2)	C16A—C15A—O2A—C14A	−176.14 (18)
C3A—C4A—C5A—C6A	44.4 (2)	C19A—C18A—O3A—C23A	−4.5 (3)
C4A—C5A—C6A—C8A	−54.4 (2)	C17A—C18A—O3A—C23A	175.13 (16)
C4A—C5A—C6A—C7A	64.9 (2)	C24A—C23A—O3A—C18A	178.68 (18)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C23—H23A···O1A	0.97	2.42	3.311 (3)	153
C23A—H23C···O1	0.97	2.43	3.297 (3)	149

Experimental details

Crystal data
Chemical formula	C₂₄H₂₉NO₃
M_r	379.49
Crystal system, space group	Triclinic, P1
Temperature (K)	298
a, b, c (Å)	9.7981 (3), 13.6139 (5), 16.7098 (6)
α, β, γ (°)	74.363 (2), 80.464 (2), 83.563 (2)
V (Å³)	2111.42 (13)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	0.08
Crystal size (mm)	0.35 × 0.28 × 0.22

Data collection
Diffractometer	Bruker APEXII CCD area-detector diffractometer
Absorption correction	Multi-scan (SADABS; Bruker, 2004)
T_min, T_max	0.973, 0.983
No. of measured, independent and observed [I > 2σ(I)] reflections	27579, 9839, 6037
R_int	0.022
(sin θ/λ)_max (Å⁻¹)	0.673

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.051, 0.150, 1.02
No. of reflections	9839
No. of parameters	509
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.53, −0.45

Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C23—H23A···O1A	0.97	2.42	3.311 (3)	153
C23A—H23C···O1	0.97	2.43	3.297 (3)	149

Acknowledgements

The authors acknowledge the Department of Chemistry, IIT Madras, for the X-ray data collection.

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