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ISSN: 2056-9890

Crystal structure of 2-tert-butyl-2,3-di­hydro-1H-benzo[c]pyrrol-1-one

aJ. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 2155/3, 182 23 Prague 8, Czech Republic, bUniversity of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic, and cInstitute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Praha 8, Czech Republic
*Correspondence e-mail: jiri.ludvik@jh-inst.cas.cz

Edited by G. Smith, Queensland University of Technology, Australia (Received 15 June 2017; accepted 12 July 2017; online 17 July 2017)

The asymmetric unit of the title compound, C12H15NO, comprises two sym­metry-independent mol­ecules which differ mainly in the conformations of the tert-butyl groups. The mol­ecules contain an essentially planar five-membered 3-pyrroline ring incorporating a carbonyl substituent (pyrrolinone) which forms part of an isoindolinone skeleton. The planarity of the pyrrole ring is compared to other structures with isoindolinone. There are only weak intra- and inter­molecular C—H⋯O and C—H⋯π-electron-ring inter­actions in the crystal structure.

1. Chemical context

Orthophthalaldehyde (o-phthalaldehyde, OPA) is an aromatic di­aldehyde bearing two electron-withdrawing carbonyl groups in positions 1 and 2. The reaction scheme involving OPA, (I)[link], shown in Fig. 1[link] comprises the main concurrent as well as consecutive reactions, which are consistent with the results obtained herein. The reactions of OPA with primary amines, which were carried out by Winter (1900[Winter, E. (1900). Justus Liebigs Ann. Chem. 311, 353-362.]) and Thiele & Schneider (1909[Thiele, J. & Schneider, J. (1909). Justus Liebigs Ann. Chem. 369, 287-299.]) for the first time, have been broadly applied for the synthesis of important heterocyclic compounds with biological relevance. A number of such reactions have been investigated recently and several structures of condensation products have been reported (DoMinh et al., 1977[DoMinh, T., Johnson, A. L., Jones, J. E. & Senise, P. P. Jr (1977). J. Org. Chem. 42, 4217-4221.]; Nan'ya et al., 1985[Nan'ya, S., Tange, T. & Maekawa, E. (1985). J. Heterocycl. Chem. 22, 449-451.]; Takahashi et al., 1996[Takahashi, I., Kawakami, T., Hirano, E., Yakota, H. & Kitajima, H. (1996). Synlett, 4, 353-355.], 2004[Takahashi, I., Miyamoto, R., Nishicuhi, K., Hatanaka, M., Yamano, A., Sakushima, A. & Hosoi, S. (2004). Heterocycles, 63, 1267-1271.], 2005[Takahashi, I., Nishicuhi, K., Miyamoto, R., Hatanaka, M., Uchida, H., Isa, K., Sakushima, A. & Hosoi, S. (2005). Lett. Org. Chem. 2, 40-43.]; Takahashi & Hatanaka, 1997[Takahashi, I. & Hatanaka, M. (1997). Heterocycles, 45, 2475-2499.]). However, the reaction mechanism is still not fully understood. Determination of the products which would serve as a confirmation of the suggested reaction scheme (Fig. 1[link]) is the reason for the present as well as for our previous studies (Donkeng Dazie, Liška & Ludvík, 2016[Donkeng Dazie, J., Liška, A. & Ludvík, J. (2016). J. Electrochem. Soc. 163, G127-G132.]; Donkeng Dazie, Liška, Ludvík, Fábry & Dušek, 2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]; Donkeng Dazie et al., 2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]).

[Scheme 1]
[Figure 1]
Figure 1
The reaction scheme for the synthesis of the title compound, (V).

The reason why a full understanding of the reaction mechanism is still lacking is the complexity of the above-mentioned reactions, which are dependent on different variables. Our partly published electrochemical experiments have shown that the reaction kinetics, as well as the reaction products, depend on the primary amine which reacts with OPA, the reaction environment (solvent) and the proportion of the reactants (Donkeng Dazie, Liška & Ludvík, 2016[Donkeng Dazie, J., Liška, A. & Ludvík, J. (2016). J. Electrochem. Soc. 163, G127-G132.]). Electrochemical monitoring has indicated the presence of side reactions, which result in a mixture of mol­ecules of different mol­ecular weights with different proportions of OPA and primary amine building blocks [cf. the reaction of OPA with 2-amino­ethanol (kolamine); see Urban et al. (2007a[Urban, J., Fábry, J., Zuman, P., Ludvík, J. & Císařová, I. (2007a). Acta Cryst. E63, o4137-o4138.],b[Urban, J., Fábry, J., Zuman, P., Ludvík, J. & Císařová, I. (2007b). Acta Cryst. E63, o4139-o4140.])].

The complexity of the reactions between primary amines and OPA is affected by the environment in which they take place. The reaction of OPA with aliphatic primary amines in aqueous solutions involves competition between the amines and water mol­ecules as nucleophiles. Although water is a weaker nucleophile than primary amines, an enormous excess of water over primary amines may cause significant additional reactions, such as covalent hydration at the double bond of the carbonyl group and the following cyclization (Zuman, 2004[Zuman, P. (2004). Chem. Rev. 104, 3217-3238.]) – see compounds (II) and (III) in Fig. 1[link]. The reaction of OPA with aliphatic primary amines represents a concurrent process (DoMinh et al., 1977[DoMinh, T., Johnson, A. L., Jones, J. E. & Senise, P. P. Jr (1977). J. Org. Chem. 42, 4217-4221.]). All attempts to isolate and identify the products of the reaction of OPA with primary amines in aqueous solutions were unsuccessful due to the number of reactions occurring and products, including the oligo- and polymeric ones (checked by thin-layer chromatography). In order to simplify the reaction media, diethyl ether as a non-aqueous organic solvent was used with the hope that some products might be obtained as crystals suitable for X-ray structure analysis.

Analogous to the reaction of OPA with iso­propyl­amine (Donkeng Dazie, Liška, Ludvík, Fábry & Dušek, 2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]), the first step of the reaction with tert-butyl­amine results in a primary carbinolamine, (IV), the inter­mediate which further yields the title product, (V) (DoMinh et al., 1977[DoMinh, T., Johnson, A. L., Jones, J. E. & Senise, P. P. Jr (1977). J. Org. Chem. 42, 4217-4221.]). The title product, (V), as well as co-product (VI), namely (3R*,1′S*,3′R*)-3-(1′-tert-butyl­amino-1′H,3′H-benzo[c]furan-3′-yl)-2-tert-butyl-2,3-di­hydro-1H-benzo[c]pyrrol-1-one) were identified as the main products in solution by means of 1H and 13C NMR analysis, as well as mass spectroscopy with electrospray ionization (ESI+). Compound (VI) was also crystallized and its structure has been determined previously (Donkeng Dazie et al., 2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]).

The spectrometric results were confirmed unequivocally by the X-ray structure analysis of compound (V) (Fig. 2[link]), as well as by the structure determination of (VI) (Donkeng Dazie et al., 2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]). In addition to the confirmation of the presence of the products in solution after they had been resolved as crystals, the previous crystallographic studies of (VI) and 2-isopropyl-2,3-di­hydro-1H-isoindol-1-one (Donkeng Dazie, Liška, Ludvík, Fábry & Dušek, 2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]) were focused on the problem of planarity of the annelated pyrrole and furan rings.

[Figure 2]
Figure 2
The atom-numbering scheme for the the two mol­ecules of (V) (A and B) in the asymmetric unit, with anisotropic displacement parameters shown at the 50% probability level.

The planarity of the pyrrole rings, which include two atoms close to sp3-hybridized, was explained by propitious values of the inner angle in the regular penta­gon of 108°, i.e. close to the ideal tetra­hedral value of 109.54°. It turned out that the planarity is correlated on the C—N bond lengths in the pyrrole fragment. Specifically, pyrrole rings with longer N—Ccarbon­yl bond lengths which exceed 1.39 Å tend to show better planarity than pyrrole rings with these shorter bond lengths (see Fig. 4 in the article by Donkeng Dazie, Liška, Ludvík, Fábry & Dušek, 2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]).

The structure of (VI) (Donkeng Dazie et al., 2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]) contains pyrrole and furan rings as parts of isoindolinone and isobenzo­furan rings, respectively. The planarity of the pyrrole ring is extremely distorted in this structure and deviates more from planarity than the furan ring in the same structure. This phenomenon can be explained by steric reasons due to the presence of a voluminous tert-butyl group. The distortion of the pyrrole ring can be provoked by repulsion of the parts of the isoindolinone and isobenzo­furan rings which are close to each other. Therefore, the present structure determination is even more inter­esting because it offers a comparison of the distortion of the planarity of the pyrrole rings in the title structure with those in 2-tert-butyl-2,3-di­hydro-1H-benzo[c]pyrrol-1-one (Donkeng Dazie, Liška, Ludvík, Fábry & Dušek, 2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]) and (3R*,1′S*,3′R*)-3-(1′-tert-butyl­amino-1′H,3′H-ben­zo[c]furan-3′-yl)-2-tert-butyl-2,3-di­hydro-1H-benzo[c]pyrrol-1-one, (VI) (Donkeng Dazie et al., 2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]), i.e. with respective less and more voluminous substituents.

2. Synthesis and crystallization

The synthesis of (V) was carried out at laboratory temperature under an argon atmosphere and the isolation procedure was similar to that reported by Takahashi et al. (2004[Takahashi, I., Miyamoto, R., Nishicuhi, K., Hatanaka, M., Yamano, A., Sakushima, A. & Hosoi, S. (2004). Heterocycles, 63, 1267-1271.], 2005[Takahashi, I., Nishicuhi, K., Miyamoto, R., Hatanaka, M., Uchida, H., Isa, K., Sakushima, A. & Hosoi, S. (2005). Lett. Org. Chem. 2, 40-43.]). Orthophthalaldehyde (OPA, 0.335 g) was dissolved in diethyl ether (25 ml, 0.1 mol l−1) and tert-butyl­amine (0.183 g, 264 µl of the pure liquid compound) was added to the solution of OPA. The amounts of the reactants correspond to a 1:1 OPA–amine stoichiometric ratio. The reaction mixture was stirred for 6 h. The solution was filtered and the ether was evaporated under reduced pressure. Two previously mentioned compounds, i.e. (V) and (VI), were identified in a light-yellow oily solution by 1H and 13C NMR analysis, as well as mass spectroscopy. After a few days at room temperature, light-yellow crystals of (VI) of the size of several tenths of mm appeared. After half a year, other crystals appeared in the form of thin light-yellow needles which were as long as 2 cm. Their other dimensions were smaller than 0.1 mm. These crystals corresponded to the expected product, namely the title compound (V).

3. Structural commentary

The title compound comprises two symmetry-independent mol­ecules (A and B) in the asymmetric unit (Fig. 2[link]), the ring systems of which are approximately coplanar [dihedral angle between the planes = 8.38 (4)°]. The two mol­ecules are conformationally similar but not identical. The function AutoMolFIT in PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]) yielded the weighted and unit-weight r.m.s. fits for the non-H atoms as 1.437 and 0.952 Å, respectively. The main difference between the two independent mol­ecules lies in the conformations within the tert-butyl substituent group (Fig. 3[link]). These differences are reflected in the comparative values of the C7A/B—N1A/B—C9A/B—C10A/B torsion angles [151.25 (10) and 129.76 (11)°, respectively].

[Figure 3]
Figure 3
Two overlapped independent mol­ecules provided by MolFit in PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]).

Table 1[link] lists the extremal deviations from the fitted planes through the core atoms of the pyrrole rings in the title structure, i.e. without the carbonyl O atoms, which were omitted from considerations. Fig. 4[link] illustrates the dependence of the maximal deviations from the best plane through the core atoms of the pyrrole rings on the N—Ccarbon­yl distance. Compounds include the title structure, (V), the structures determined by Donkeng Dazie, Liška, Ludvík, Fábry & Dušek (2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]) and Donkeng Dazie et al. (2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]), as well as 233 structures with the isoindolinone fragment (Table 1[link]), which were retrieved from the Cambridge Structural Database (Version 5.36; Groom et al., 2016[Groom, C. R., Bruno, I. J., Lightfoot, M. P. & Ward, S. C. (2016). Acta Cryst. B72, 171-179.]). (The retrieved structures contained no disorder and errors, while they were determined below 150 K, with R factors < 0.05; in case the structures contained two carbonyl groups, the retrieved data were collected twice and the variant with the larger N—C8 distance was selected for further consideration.) Fig. 4[link] also shows that the largest distortion of the pyrrole ring takes place in (VI) (Donkeng Dazie et al., 2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]), the distortion being milder in the title mol­ecules and being mildest in 2-isopropyl-2,3-di­hydro-1H-isoindol-1-one (Donkeng Dazie, Liška, Ludvík, Fábry & Dušek, 2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]). It indicates that the reasons for the distortion of the pyrrole rings from planarity are steric ones in these cases: tert-butyl as a more voluminous group causes a larger distortion in comparison with the isopropyl group. In (VI), an inter­action between the bulky isoindolinone and isobenzo­furan ring moieties also takes place.

Table 1
χ2 and extremal deviations (Å) from the fitted planes in the ring systems of the title mol­ecule

Ring χ2 Extremal deviation (Å) Atom with the greatest deviation
N1A—C1A—C2A—C3A—C4A—C5A—C6A—C7A—C8A 7649 0.0513 (10) N1A
N1B—C1B—C2B—C3B—C4B—C5B—C6B—C7B—C8B 9338 0.0505 (10) N1B
       
N1A—C1A—C6A—C7A—C8A 2590 −0.0341 (13) C8A
N1B—C1B—C6B—C7B—C8B 923 −0.0201 (14) C8B
       
C1A—C2A—C3A—C4A—C5A—C6A 160 0.0091 (14) C3A
C1B—C2B—C3B—C4B—C5B—C6B 119 −0.0069 (14) C5B
[Figure 4]
Figure 4
The dependence of the extremal deviations from planarity, Δextrem (Å), within the pyrrole core atoms of the isoindolinone system on the N—C bond length in N—C8(=O) (Å) (OriginLab, 2000[OriginLab (2000). ORIGIN6.1. OriginLab Corporation, Northampton, USA.]). Black squares indicate the structures retrieved from the CSD, the red circle is 2-isopropyl-2,3-di­hydro-1H-isoindol-1-one (Donkeng Dazie, Liška, Ludvík, Fábry & Dušek, 2016[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J. & Dušek, M. (2016). Acta Cryst. C72, 518-524.]), green triangles refer to (VI) (Donkeng Dazie et al., 2017[Donkeng Dazie, J., Liška, A., Ludvík, J., Fábry, J., Dušek, M. & Eigner, V. (2017). Z. Kristallogr. Cryst. Mater. 232, 441-452.]) and blue triangles refer to the title mol­ecule, (V).

4. Supra­molecular features

The crystal packing of the mol­ecules of (V) in the unit cell (Fig. 5[link]) is relatively simple. There are two inter­molecular C—H⋯O inter­actions (Table 2[link]), one linking the two independent mol­ecules (C4B—H⋯O1Aii) and the other linking only A mol­ecules (C7A—H⋯O1Ai). Weak C—H⋯π-electron inter­actions involving only B mol­ecules (Table 3[link]) are also present. No ππ-electron ring inter­actions are present in the structure.

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
C7A—H2c7A⋯O1Ai 0.99 2.51 3.4389 (14) 157
C10A—H1c10A⋯O1A 0.98 2.34 2.9149 (12) 117
C4B—H1c4B⋯O1Aii 0.95 2.39 3.3237 (15) 167
C10B—H2c1B⋯O1B 0.98 2.42 3.0171 (15) 119
Symmetry codes: (i) x-1, y, z; (ii) [x-{\script{1\over 2}}, -y+{\script{1\over 2}}, z+{\script{1\over 2}}].

Table 3
C—H⋯π-electron ring inter­actions (Å, °)

Cg1 is the centroid of the N1B/C7B/C6B/C1B/C8B ring and Cg2 is the centroid of the C1B/C2B/C3B/C4B/C5B/C6B ring.

C—H⋯Cg C—H H⋯Cg C—H⋯Cg C⋯Cg
C11B—H3c11BCg1iii 0.98 2.78 135 3.5373 (14)
C11B—H3c11BCg2iii 0.98 2.95 173 3.9288 (14)
Symmetry code: (iii): x − [{1\over 2}], −y + [{1\over 2}], z − [{1\over 2}].
[Figure 5]
Figure 5
The packing of the title mol­ecules in the unit cell. H atoms have been omitted for clarity. Colour key: C gray, N blue and O red.

5. Database survey

The survey relating particularly to the structural features of the isoindolinone ring system has been covered in §3[link].

6. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 4[link]. All H atoms were discernible in difference electron-density maps. However, the aryl, methyl­ene and methyl H atoms were constrained, with aryl C—H = 0.95 Å, methyl­ene C—H = 0.99 Å and methyl C—H = 0.98 Å, and with Uiso(H) = 1.5Ueq(C) for methyl H atoms and 1.2Ueq(C) otherwise.

Table 4
Experimental details

Crystal data
Chemical formula C12H15NO
Mr 189.3
Crystal system, space group Monoclinic, P21/n
Temperature (K) 120
a, b, c (Å) 6.0440 (1), 32.6938 (6), 10.5679 (2)
β (°) 92.266 (2)
V3) 2086.60 (7)
Z 8
Radiation type Cu Kα
μ (mm−1) 0.60
Crystal size (mm) 0.71 × 0.05 × 0.04
 
Data collection
Diffractometer Rigaku Xcalibur (Atlas S2, Gemini ultra)
Absorption correction Analytical (CrysAlis PRO; Rigaku OD, 2015[Rigaku OD (2015). CrysAlis PRO. Rigaku Oxford Diffraction Limited, Yarnton, Oxfordshire, England.])
Tmin, Tmax 0.912, 0.990
No. of measured, independent and observed [I > 3σ(I)] reflections 14273, 3683, 3183
Rint 0.022
(sin θ/λ)max−1) 0.597
 
Refinement
R[F > 3σ(F)], wR(F), S 0.032, 0.083, 2.13
No. of reflections 3683
No. of parameters 254
H-atom treatment H-atom parameters constrained
Δρmax, Δρmin (e Å−3) 0.21, −0.15
Computer programs: CrysAlis PRO (Rigaku OD, 2015[Rigaku OD (2015). CrysAlis PRO. Rigaku Oxford Diffraction Limited, Yarnton, Oxfordshire, England.]), SIR2014 (Burla et al., 2015[Burla, M. C., Caliandro, R., Carrozzini, B., Cascarano, G. L., Cuocci, C., Giacovazzo, C., Mallamo, M., Mazzone, A. & Polidori, G. (2015). J. Appl. Cryst. 48, 306-309.]), JANA2006 (Petříček et al., 2014[Petříček, V., Dušek, M. & Palatinus, L. (2014). Z. Kristallogr. Cryst. Mater. 229, 345-352.]), DIAMOND (Brandenburg & Putz, 2005[Brandenburg, K. & Putz, H. (2005). DIAMOND. Crystal Impact GbR, Bonn, Germany.]), Origin6.1 (OriginLab, 2000[OriginLab (2000). ORIGIN6.1. OriginLab Corporation, Northampton, USA.]) and PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]).

Supporting information


Computing details top

Data collection: CrysAlis PRO (Rigaku OD, 2015); cell refinement: CrysAlis PRO (Rigaku OD, 2015); data reduction: CrysAlis PRO (Rigaku OD, 2015); program(s) used to solve structure: SIR2014 (Burla et al., 2015); program(s) used to refine structure: JANA2006 (Petříček et al., 2014); molecular graphics: DIAMOND (Brandenburg & Putz, 2005), Origin6.1 (OriginLab, 2000) and PLATON (Spek, 2009).; software used to prepare material for publication: JANA2006 (Petříček et al., 2014).

2-tert-Butyl-2,3-dihydro-1H-benzo[c]pyrrol-1-one top
Crystal data top
C12H15NOF(000) = 816
Mr = 189.3Dx = 1.205 Mg m3
Monoclinic, P21/nCu Kα radiation, λ = 1.54184 Å
Hall symbol: -P 2ynCell parameters from 7498 reflections
a = 6.0440 (1) Åθ = 4.4–67.0°
b = 32.6938 (6) ŵ = 0.60 mm1
c = 10.5679 (2) ÅT = 120 K
β = 92.266 (2)°Needle, yellow
V = 2086.60 (7) Å30.71 × 0.05 × 0.04 mm
Z = 8
Data collection top
Rigaku Xcalibur (AtlasS2, Gemini ultra)
diffractometer
3683 independent reflections
Radiation source: fine-focus sealed X-ray tube3183 reflections with I > 3σ(I)
Mirror monochromatorRint = 0.022
Detector resolution: 5.1783 pixels mm-1θmax = 67.0°, θmin = 4.2°
ω scansh = 74
Absorption correction: analytical
(CrysAlis PRO; Rigaku OD, 2015)
k = 3838
Tmin = 0.912, Tmax = 0.990l = 1212
14273 measured reflections
Refinement top
Refinement on F2H-atom parameters constrained
R[F > 3σ(F)] = 0.032Weighting scheme based on measured s.u.'s w = 1/(σ2(I) + 0.0004I2)
wR(F) = 0.083(Δ/σ)max = 0.014
S = 2.13Δρmax = 0.21 e Å3
3683 reflectionsΔρmin = 0.15 e Å3
254 parametersExtinction correction: B-C type 1 Lorentzian isotropic (Becker & Coppens, 1974)
0 restraintsExtinction coefficient: 1900 (300)
120 constraints
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
C1A1.05872 (18)0.41691 (3)0.88936 (11)0.0210 (3)
C2A1.20864 (19)0.38519 (3)0.91362 (11)0.0248 (3)
H1c2A1.3468610.3843090.8739120.0297*
C3A1.1490 (2)0.35501 (4)0.99761 (12)0.0280 (4)
H1c3A1.2492740.3334021.017930.0336*
C4A0.9431 (2)0.35599 (4)1.05272 (12)0.0284 (4)
H1c4A0.9041440.3347281.1089110.0341*
C5A0.7941 (2)0.38750 (4)1.02689 (11)0.0272 (4)
H1c5A0.6538380.3880231.064380.0326*
C6A0.85583 (18)0.41824 (4)0.94471 (11)0.0225 (3)
C7A0.73755 (19)0.45661 (4)0.90290 (11)0.0248 (3)
H1c7A0.7109280.4739250.9776360.0298*
H2c7A0.6035110.4493720.8508110.0298*
N1A0.89842 (15)0.47684 (3)0.82295 (9)0.0202 (3)
C8A1.08131 (18)0.45317 (3)0.80689 (10)0.0201 (3)
O1A1.23619 (13)0.46031 (2)0.73771 (8)0.0271 (3)
C9A0.83129 (17)0.51233 (3)0.74110 (10)0.0207 (3)
C10A1.02829 (19)0.54069 (3)0.72184 (12)0.0260 (3)
H1c10A1.1388810.5264480.6727350.0389*
H2c10A1.0944910.5485620.8044260.0389*
H3c10A0.9777480.5652430.6760150.0389*
C11A0.7424 (2)0.49567 (4)0.61388 (11)0.0266 (4)
H1c11A0.6100110.4791310.6269430.04*
H2c11A0.7042560.5185170.5570740.04*
H3c11A0.8558880.478690.5760520.04*
C12A0.6517 (2)0.53639 (4)0.80661 (12)0.0281 (4)
H1c12A0.7072930.5448690.8909410.0421*
H2c12A0.6119840.5606490.7561880.0421*
H3c12A0.5206230.5190820.8146950.0421*
C1B0.93503 (18)0.16836 (3)0.84550 (11)0.0200 (3)
C2B1.0953 (2)0.13796 (3)0.86011 (11)0.0240 (3)
H1c2B1.220060.1373010.8081910.0288*
C3B1.0668 (2)0.10871 (4)0.95295 (12)0.0288 (4)
H1c3B1.1750080.0878890.965950.0346*
C4B0.8815 (2)0.10939 (4)1.02764 (12)0.0307 (4)
H1c4B0.8643770.0888941.0902170.0368*
C5B0.7219 (2)0.13970 (4)1.01152 (12)0.0285 (4)
H1c5B0.5949890.1400411.0617770.0343*
C6B0.75219 (19)0.16947 (3)0.92019 (11)0.0222 (3)
C7B0.61887 (19)0.20715 (3)0.88797 (11)0.0231 (3)
H1c7B0.4725260.1990460.8506990.0278*
H2c7B0.6149630.2251010.9632830.0278*
N1B0.74871 (15)0.22684 (3)0.79078 (9)0.0203 (3)
C8B0.92917 (18)0.20442 (3)0.76015 (10)0.0197 (3)
O1B1.06256 (13)0.21250 (2)0.67857 (8)0.0265 (2)
C9B0.68069 (18)0.26616 (3)0.72888 (11)0.0216 (3)
C10B0.8756 (2)0.29586 (4)0.73421 (13)0.0298 (4)
H1c10B0.931540.2987550.8220620.0447*
H2c10B0.9936360.2853030.6822540.0447*
H3c10B0.8268340.3225880.701730.0447*
C11B0.6048 (2)0.25745 (4)0.59210 (12)0.0305 (4)
H1c11B0.4738750.239760.591040.0458*
H2c11B0.7240730.2437370.5483560.0458*
H3c11B0.5678540.2832510.5490730.0458*
C12B0.4915 (2)0.28510 (4)0.80033 (13)0.0317 (4)
H1c12B0.366950.2659210.8007730.0475*
H2c12B0.4438910.3105440.7584560.0475*
H3c12B0.5422120.2910110.8876560.0475*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
C1A0.0229 (6)0.0211 (6)0.0187 (5)0.0019 (4)0.0019 (4)0.0036 (4)
C2A0.0254 (6)0.0213 (6)0.0277 (6)0.0009 (4)0.0009 (5)0.0042 (5)
C3A0.0361 (7)0.0201 (6)0.0275 (6)0.0035 (5)0.0020 (5)0.0025 (5)
C4A0.0404 (7)0.0231 (6)0.0216 (6)0.0022 (5)0.0010 (5)0.0004 (5)
C5A0.0294 (6)0.0306 (6)0.0218 (6)0.0031 (5)0.0038 (5)0.0015 (5)
C6A0.0234 (6)0.0263 (6)0.0176 (5)0.0012 (4)0.0009 (4)0.0006 (5)
C7A0.0210 (6)0.0316 (6)0.0219 (6)0.0013 (4)0.0035 (5)0.0052 (5)
N1A0.0193 (5)0.0228 (5)0.0183 (5)0.0012 (3)0.0008 (4)0.0013 (4)
C8A0.0199 (5)0.0214 (5)0.0190 (5)0.0023 (4)0.0005 (4)0.0037 (4)
O1A0.0236 (4)0.0262 (4)0.0320 (5)0.0007 (3)0.0091 (4)0.0012 (4)
C9A0.0218 (5)0.0216 (6)0.0186 (5)0.0009 (4)0.0019 (4)0.0017 (4)
C10A0.0261 (6)0.0221 (6)0.0293 (6)0.0033 (4)0.0032 (5)0.0016 (5)
C11A0.0289 (6)0.0299 (6)0.0207 (6)0.0049 (5)0.0044 (5)0.0013 (5)
C12A0.0287 (6)0.0278 (6)0.0277 (6)0.0068 (5)0.0004 (5)0.0008 (5)
C1B0.0221 (5)0.0188 (5)0.0189 (5)0.0022 (4)0.0010 (4)0.0032 (4)
C2B0.0262 (6)0.0212 (6)0.0248 (6)0.0014 (4)0.0022 (5)0.0037 (5)
C3B0.0369 (7)0.0200 (6)0.0295 (7)0.0053 (5)0.0004 (5)0.0011 (5)
C4B0.0463 (7)0.0196 (6)0.0264 (6)0.0007 (5)0.0048 (5)0.0027 (5)
C5B0.0343 (7)0.0249 (6)0.0271 (6)0.0030 (5)0.0095 (5)0.0013 (5)
C6B0.0242 (6)0.0204 (6)0.0220 (6)0.0027 (4)0.0010 (5)0.0023 (4)
C7B0.0213 (5)0.0242 (6)0.0242 (6)0.0006 (4)0.0051 (5)0.0026 (5)
N1B0.0193 (4)0.0212 (5)0.0206 (5)0.0019 (4)0.0028 (4)0.0022 (4)
C8B0.0198 (5)0.0204 (5)0.0189 (5)0.0011 (4)0.0002 (4)0.0032 (4)
O1B0.0270 (4)0.0262 (4)0.0271 (4)0.0023 (3)0.0107 (3)0.0028 (3)
C9B0.0220 (6)0.0195 (5)0.0233 (6)0.0023 (4)0.0009 (4)0.0024 (4)
C10B0.0278 (6)0.0227 (6)0.0390 (7)0.0016 (5)0.0028 (5)0.0005 (5)
C11B0.0360 (7)0.0282 (7)0.0268 (7)0.0020 (5)0.0061 (5)0.0040 (5)
C12B0.0292 (6)0.0284 (6)0.0379 (7)0.0088 (5)0.0081 (5)0.0047 (5)
Geometric parameters (Å, º) top
C1A—C2A1.3942 (16)C1B—C2B1.3922 (16)
C1A—C6A1.3800 (16)C1B—C6B1.3836 (16)
C1A—C8A1.4810 (16)C1B—C8B1.4841 (15)
C2A—H1c2A0.95C2B—H1c2B0.95
C2A—C3A1.3844 (17)C2B—C3B1.3858 (17)
C3A—H1c3A0.95C3B—H1c3B0.95
C3A—C4A1.3949 (18)C3B—C4B1.3958 (19)
C4A—H1c4A0.95C4B—H1c4B0.95
C4A—C5A1.3881 (17)C4B—C5B1.3887 (18)
C5A—H1c5A0.95C5B—H1c5B0.95
C5A—C6A1.3889 (17)C5B—C6B1.3880 (17)
C6A—C7A1.5018 (16)C6B—C7B1.5036 (16)
C7A—H1c7A0.99C7B—H1c7B0.99
C7A—H2c7A0.99C7B—H2c7B0.99
C7A—N1A1.4703 (15)C7B—N1B1.4659 (15)
H1c7A—H2c7A1.6713N1B—C8B1.3636 (14)
N1A—C8A1.3655 (14)N1B—C9B1.4929 (14)
N1A—C9A1.4936 (14)C8B—O1B1.2320 (14)
C8A—O1A1.2326 (14)C9B—C10B1.5259 (16)
C9A—C10A1.5291 (16)C9B—C11B1.5259 (17)
C9A—C11A1.5283 (16)C9B—C12B1.5262 (17)
C9A—C12A1.5283 (16)C10B—H1c10B0.98
C10A—H1c10A0.98C10B—H2c10B0.98
C10A—H2c10A0.98C10B—H3c10B0.98
C10A—H3c10A0.98C11B—H1c11B0.98
C11A—H1c11A0.98C11B—H2c11B0.98
C11A—H2c11A0.98C11B—H3c11B0.98
C11A—H3c11A0.98C12B—H1c12B0.98
C12A—H1c12A0.98C12B—H2c12B0.98
C12A—H2c12A0.98C12B—H3c12B0.98
C12A—H3c12A0.98
C2A—C1A—C6A121.84 (11)C2B—C1B—C6B121.57 (10)
C2A—C1A—C8A129.00 (10)C2B—C1B—C8B129.36 (10)
C6A—C1A—C8A109.16 (10)C6B—C1B—C8B108.99 (9)
C1A—C2A—H1c2A121.18C1B—C2B—H1c2B121.12
C1A—C2A—C3A117.65 (11)C1B—C2B—C3B117.76 (11)
H1c2A—C2A—C3A121.18H1c2B—C2B—C3B121.12
C2A—C3A—H1c3A119.65C2B—C3B—H1c3B119.52
C2A—C3A—C4A120.70 (11)C2B—C3B—C4B120.95 (11)
H1c3A—C3A—C4A119.65H1c3B—C3B—C4B119.52
C3A—C4A—H1c4A119.42C3B—C4B—H1c4B119.63
C3A—C4A—C5A121.16 (11)C3B—C4B—C5B120.75 (11)
H1c4A—C4A—C5A119.42H1c4B—C4B—C5B119.63
C4A—C5A—H1c5A120.93C4B—C5B—H1c5B120.81
C4A—C5A—C6A118.14 (11)C4B—C5B—C6B118.39 (12)
H1c5A—C5A—C6A120.93H1c5B—C5B—C6B120.81
C1A—C6A—C5A120.49 (11)C1B—C6B—C5B120.57 (11)
C1A—C6A—C7A108.80 (10)C1B—C6B—C7B108.98 (10)
C5A—C6A—C7A130.69 (11)C5B—C6B—C7B130.36 (11)
C6A—C7A—H1c7A109.47C6B—C7B—H1c7B109.47
C6A—C7A—H2c7A109.47C6B—C7B—H2c7B109.47
C6A—C7A—N1A103.12 (9)C6B—C7B—N1B102.80 (9)
H1c7A—C7A—H2c7A115.15H1c7B—C7B—H2c7B115.41
H1c7A—C7A—N1A109.47H1c7B—C7B—N1B109.47
H2c7A—C7A—N1A109.47H2c7B—C7B—N1B109.47
C7A—N1A—C8A111.93 (9)C7B—N1B—C8B112.69 (9)
C7A—N1A—C9A120.76 (8)C7B—N1B—C9B122.65 (9)
C8A—N1A—C9A124.82 (9)C8B—N1B—C9B124.60 (9)
C1A—C8A—N1A106.66 (9)C1B—C8B—N1B106.42 (9)
C1A—C8A—O1A126.18 (10)C1B—C8B—O1B126.51 (10)
N1A—C8A—O1A127.15 (10)N1B—C8B—O1B127.06 (10)
N1A—C9A—C10A110.67 (9)N1B—C9B—C10B109.45 (9)
N1A—C9A—C11A108.10 (9)N1B—C9B—C11B108.75 (9)
N1A—C9A—C12A108.61 (9)N1B—C9B—C12B109.35 (9)
C10A—C9A—C11A110.33 (9)C10B—C9B—C11B110.88 (10)
C10A—C9A—C12A108.60 (9)C10B—C9B—C12B108.42 (9)
C11A—C9A—C12A110.52 (9)C11B—C9B—C12B109.97 (9)
C9A—C10A—H1c10A109.47C9B—C10B—H1c10B109.47
C9A—C10A—H2c10A109.47C9B—C10B—H2c10B109.47
C9A—C10A—H3c10A109.47C9B—C10B—H3c10B109.47
H1c10A—C10A—H2c10A109.47H1c10B—C10B—H2c10B109.47
H1c10A—C10A—H3c10A109.47H1c10B—C10B—H3c10B109.47
H2c10A—C10A—H3c10A109.47H2c10B—C10B—H3c10B109.47
C9A—C11A—H1c11A109.47C9B—C11B—H1c11B109.47
C9A—C11A—H2c11A109.47C9B—C11B—H2c11B109.47
C9A—C11A—H3c11A109.47C9B—C11B—H3c11B109.47
H1c11A—C11A—H2c11A109.47H1c11B—C11B—H2c11B109.47
H1c11A—C11A—H3c11A109.47H1c11B—C11B—H3c11B109.47
H2c11A—C11A—H3c11A109.47H2c11B—C11B—H3c11B109.47
C9A—C12A—H1c12A109.47C9B—C12B—H1c12B109.47
C9A—C12A—H2c12A109.47C9B—C12B—H2c12B109.47
C9A—C12A—H3c12A109.47C9B—C12B—H3c12B109.47
H1c12A—C12A—H2c12A109.47H1c12B—C12B—H2c12B109.47
H1c12A—C12A—H3c12A109.47H1c12B—C12B—H3c12B109.47
H2c12A—C12A—H3c12A109.47H2c12B—C12B—H3c12B109.47
C9A—N1A—C8A—C1A168.13 (9)C9B—N1B—C8B—C1B179.36 (9)
C7A—N1A—C9A—C10A151.25 (10)C7B—N1B—C9B—C10B129.76 (11)
C8A—N1A—C7A—C6A5.02 (12)C8B—N1B—C7B—C6B3.02 (12)
C9A—N1A—C7A—C6A167.96 (9)C9B—N1B—C7B—C6B179.88 (9)
C7A—N1A—C8A—O1A174.11 (11)C7B—N1B—C8B—O1B176.92 (10)
C9A—N1A—C8A—O1A11.99 (17)C9B—N1B—C8B—O1B0.12 (17)
C7A—N1A—C8A—C1A6.01 (12)C7B—N1B—C8B—C1B3.60 (12)
C7A—N1A—C9A—C11A87.82 (12)C7B—N1B—C9B—C11B108.96 (11)
C8A—N1A—C9A—C11A72.82 (12)C8B—N1B—C9B—C11B67.79 (13)
C8A—N1A—C9A—C10A48.11 (13)C8B—N1B—C9B—C10B53.48 (14)
C8A—N1A—C9A—C12A167.23 (10)C8B—N1B—C9B—C12B172.11 (10)
C7A—N1A—C9A—C12A32.13 (13)C7B—N1B—C9B—C12B11.13 (14)
C8A—C1A—C2A—C3A178.57 (11)C8B—C1B—C2B—C3B176.12 (11)
C6A—C1A—C2A—C3A1.08 (17)C6B—C1B—C2B—C3B0.36 (17)
C2A—C1A—C8A—O1A4.84 (19)C2B—C1B—C8B—O1B5.40 (19)
C2A—C1A—C8A—N1A175.05 (11)C2B—C1B—C8B—N1B174.09 (11)
C6A—C1A—C8A—O1A175.47 (11)C6B—C1B—C8B—O1B177.77 (11)
C2A—C1A—C6A—C5A0.26 (18)C2B—C1B—C6B—C5B0.84 (17)
C2A—C1A—C6A—C7A178.20 (10)C2B—C1B—C6B—C7B176.23 (10)
C8A—C1A—C6A—C5A179.98 (11)C8B—C1B—C6B—C5B177.96 (10)
C8A—C1A—C6A—C7A1.52 (13)C8B—C1B—C6B—C7B0.89 (12)
C6A—C1A—C8A—N1A4.64 (12)C6B—C1B—C8B—N1B2.75 (12)
C1A—C2A—C3A—C4A1.77 (18)C1B—C2B—C3B—C4B1.09 (18)
C2A—C3A—C4A—C5A1.17 (19)C2B—C3B—C4B—C5B0.63 (19)
C3A—C4A—C5A—C6A0.21 (19)C3B—C4B—C5B—C6B0.57 (19)
C4A—C5A—C6A—C1A0.91 (18)C4B—C5B—C6B—C1B1.29 (18)
C4A—C5A—C6A—C7A177.17 (12)C4B—C5B—C6B—C7B175.08 (12)
C5A—C6A—C7A—N1A176.34 (12)C5B—C6B—C7B—N1B175.55 (12)
C1A—C6A—C7A—N1A1.91 (12)C1B—C6B—C7B—N1B1.15 (12)
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C7A—H2c7A···O1Ai0.992.513.4389 (14)157
C10A—H1c10A···O1A0.982.342.9149 (12)117
C4B—H1c4B···O1Aii0.952.393.3237 (15)167
C10B—H2c1B···O1B0.982.423.0171 (15)119
Symmetry codes: (i) x1, y, z; (ii) x1/2, y+1/2, z+1/2.
Table 2. χ2 as well as extremal deviations (Å) from the fitted plane in the ring systems of the title molecule. top
Ringχ2extremal deviation (Å)(the most deviated atom)
N1A-C1A-C2A-C3A-C4A-C5A-C6A-C7A-C8A7649.2940.0513 (10)(N1A)
N1B-C1B-C2B-C3B-C4B-C5B-C6B-C7B-C8B9338.1620.0505 (10)(N1B)
N1A-C1A-C6A-C7A-C8A2589.799-0.0341 (13)(C8A)
N1B-C1B-C6B-C7B-C8B923.497-0.0201 (14)(C8B)
C1A-C2A-C3A-C4A-C5A-C6A160.4000.0091 (14)(C3A)
C1B-C2B-C3B-C4B-C5B-C6B119.044-0.0069 (14)(C5B)
Table 4. C—H···π electron ring interactions (Å, °) top
C11B-H3c11B—Cg1iii0.982.781353.5373 (14)
C11B-H3c11B—Cg2iii0.982.951733.9288 (14)
Symmetry code: (iii): x -1/2, -y + 1/2, z -1/2; Cg1 is a centroid of the ring N1B-C7B-C6B-C1B-C8B; Cg2 is a centroid of the ring C1B-C2B-C3B-C4B-C5B-C6B.
 

Funding information

Funding for this research was provided by: Grantová Agentura České Republiky (grant No. 13-21704S), as well as by institutional support (RVO: 61388955). The equipment of the ASTRA laboratory, which was established within the Operation Program Prague Competitiveness (project CZ.2.16/3.1.00/24510), was used for the single-crystal diffraction experiment

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