research communications\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 77| Part 8| August 2021| Pages 834-838
https://doi.org/10.1107/S2056989021007441

Crystal structure, Hirshfeld surface analysis and inter­action energy calculation of 4-(furan-2-yl)-2-(6-methyl-2,4-dioxo­pyran-3-yl­­idene)-2,3,4,5-tetra­hydro-1H-1,5-benzodiazepine

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Mohamed El Hafi,a Sanae Lahmidi,a Lhoussaine El Ghayati,a Tuncer Hökelek,b Joel T. Mague,c Bushra Amer,d* Nada Kheira Sebbara,e and El Mokhtar Essassie

aLaboratory of Heterocyclic Organic Chemistry, Department of Chemistry, Faculty of Sciences, Mohammed V University in Rabat, BP 1014, Rabat, Morocco, bDepartment of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey, cDepartment of Chemistry, Tulane University, New Orleans, LA 70118, USA, dFaculty of Medicine and Health Sciences, Sana'a University, Sana'a, Yemen, and eApplied Chemistry and Environment Laboratory, Applied Bioorganic Chemistry Team, Faculty of Science, Ibn Zohr University, Agadir, Morocco
*Correspondence e-mail: Bushraamer2014@gmail.com

Edited by M. Weil, Vienna University of Technology, Austria (Received 7 June 2021; accepted 19 July 2021; online 27 July 2021)

The title compound {systematic name: (S,E)-3-[4-(furan-2-yl)-2,3,4,5-tetra­hydro-1H-benzo[b][1,4]diazepin-2-yl­idene]-6-methyl-2H-pyran-2,4(3H)-dione}, C19H16N2O4, is constructed from a benzodiazepine ring system linked to furan and pendant di­hydro­pyran rings, where the benzene and furan rings are oriented at a dihedral angle of 48.7 (2)°. The pyran ring is modestly non-planar [largest deviation of 0.029 (4) Å from the least-squares plane] while the tetra­hydro­diazepine ring adopts a boat conformation. The rotational orientation of the pendant di­hydro­pyran ring is partially determined by an intra­molecular N—HDiazp⋯ODhydp (Diazp = diazepine and Dhydp = di­hydro­pyran) hydrogen bond. In the crystal, layers of mol­ecules parallel to the bc plane are formed by N—HDiazp⋯ODhydp hydrogen bonds and slipped π–π stacking inter­actions. The layers are connected by additional slipped π–π stacking inter­actions. A Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H⋯H (46.8%), H⋯O/O⋯H (23.5%) and H⋯C/C⋯H (15.8%) inter­actions, indicating that van der Waals inter­actions are the dominant forces in the crystal packing. Computational chemistry indicates that in the crystal the N—H⋯O hydrogen-bond energy is 57.5 kJ mol−1.

CCDC reference: 2097593

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1. Chemical context

1,5-Benzodiazepine derivatives are an important class of nitro­gen-containing heterocyclic compounds because of their potent biological activities, acting as anti­depressant (Sharma et al., 2017[Sharma, R., Tilak, A., Thakur, R. N., Gangwar, S. S. & Sutar, R. C. (2017). World J. Pharm. Res. 6, 925-931.]), anti­tubercular (Singh et al., 2017[Singh, G., Nayak, S. K. & Monga, V. (2017). Indian J. Heterocycl. Chem. 27, 143-149.]), anti­microbial (An et al., 2016[An, Y. S., Hao, Z. F., Zhang, X. J. & Wang, L. Z. (2016). Chem. Biol. Drug Des. 88, 110-121.]) and anti­convulsant agents (Jyoti & Mithlesh, 2013[Jyoti, Y. & Mithlesh, P. D. (2013). Pharm. Sin. 4, 81-90.]). Many synthetic methodologies have been developed to access this type of compound (Sebhaoui et al., 2017[Sebhaoui, J., El Bakri, Y., Essassi, E. M. & Mague, J. T. (2017). IUCrData, 2, x171057.]; Chkirate et al., 2018[Chkirate, K., Sebbar, N. K., Karrouchi, K. & Essassi, E. M. (2018). J. Mar. Chim. Heterocycl, 17, 1-27.]).

The present study continues the investigation of 1,5-benzodiazepine derivatives recently published by our team (El Ghayati et al., 2019[El Ghayati, L., Ramli, Y., Hökelek, T., Labd Taha, M., Mague, J. T. & Essassi, E. M. (2019). Acta Cryst. E75, 94-98.], 2021[El Ghayati, L., Sert, Y., Sebbar, N. K., Ramli, Y., Ahabchane, N. H., Talbaoui, A., Mague, J. T., El Ibrahimi, B., Taha, M. L., Essassi, E. M., Al-Zaqri, N. & Alsalme, A. (2021). J. Heterocycl. Chem. 58, 270-289.]; Essaghouani et al., 2016[Essaghouani, A., Elmsellem, H., Boulhaoua, M., Ellouz, M., El Hafi, M., Sebbar, N. K., Essassi, E. M., Bouabdellaoui, M., Aouniti, A. & Hammouti, B. (2016). Pharma Chemica, 8, 347-355.], 2017[Essaghouani, A., Boulhaoua, M., El Hafi, M., Benchidmi, M., Essassi, E. M. & Mague, J. T. (2017). IUCrData, 2, x170120.]). In this context, we report herein the synthesis, the mol­ecular and crystal structures along with the Hirshfeld surface analysis and the inter­molecular inter­action energies of the title compound, (I)[link].

[Scheme 1]

2. Structural commentary

The O1/C10–C14 pyran ring is not planar and a puckering analysis (Cremer & Pople, 1975[Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354-1358.]) yielded the parameters Q = 0.082 (4) Å, θ = 114 (3)° and φ = 70 (3)°, thus indicating it adopts a slightly twisted envelope conformation with C10 at the tip of the flap. In the seven-membered ring, N1 and N2 are displaced from the C1–C6 plane by 0.159 (6) and 0.158 (6) Å, respectively, in the direction away from C8 (Fig. 1[link]). A puckering analysis of the seven-membered ring gave the parameters Q(2) = 0.915 (4) Å, Q(3) = 0.187 (4) Å, φ(2) = 38.9 (2)° and φ(3) = 156.3 (12)° [total puckering amplitude Q = 0.933 (4) Å]. This ring adopts a boat conformation. The mean plane of the O1/C10–C14 ring is inclined to that of the C1–C6 ring by 34.8 (1)°, while the C1–C6 and O4/C16–C19 rings make a dihedral angle of 48.7 (2)°. The orientation of the O1/C10–C14 ring is partially determined by an intra­molecular N1—H1⋯O2 hydrogen bond (Table 1[link], Fig. 1[link]). All bond lengths and angles in the mol­ecule of (I)[link] are in the expected ranges.

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A D⋯A D—H⋯A
N1—H1⋯O2 0.91 (1) 1.72 (3) 2.538 (4) 148 (4)
N2—H2A⋯O3vi 0.91 (1) 2.20 (2) 3.079 (4) 162 (5)
Symmetry code: (vi) [-x+1, y-{\script{1\over 2}}, -z+{\script{1\over 2}}].
[Figure 1]
Figure 1
The mol­ecule of (I)[link] with the atom-numbering scheme and displacement ellipsoids drawn at the 50% probability level. The intra­molecular hydrogen bond is depicted by a dashed line.

3. Supra­molecular features

In the crystal, N—HDiazp⋯ODhydp (Diazp = diazepine and Dhydp = di­hydro­pyran) hydrogen bonds (Table 1[link]) form helical chains of mol­ecules extending along the b-axis direction. The chains are reinforced by slipped π–π stacking inter­actions between furan and pyran rings within the chains [centroid⋯centroid(−x + 1, y + [{1\over 2}], −z + [{1\over 2}]) distance = 3.610 (2) Å, dihedral angle = 4.4 (2)°, slippage = 1.14 Å]. The chains are connected into layers parallel to the bc plane by analogous π–π stacking inter­actions (Fig. 2[link]) [centroid⋯centroid(−x + 1, y − [{1\over 2}], −z + [{1\over 2}]) distance = 3.610 (2) Å, dihedral angle = 4.4 (2)°, slippage = 1.38 Å]. The layers are connected by slipped π–π stacking inter­actions between inversion-related C1–C6 rings [centroid⋯centroid (−x + 1, −y, −z + 1) distance = 3.690 (2) Å, slippage = 1.47 Å] (Fig. 3[link]).

[Figure 2]
Figure 2
Portions of two chains viewed along the c axis direction with N—H⋯O hydrogen bonds and slipped π–π stacking inter­actions depicted, respectively, by violet and orange dashed lines.
[Figure 3]
Figure 3
Packing viewed along the a-axis direction with inter­molecular inter­actions depicted as in Fig. 2[link].

4. Hirshfeld surface analysis

In order to visualize the inter­molecular inter­actions in the crystal of (I)[link], a Hirshfeld surface (HS) analysis (Hirshfeld, 1977[Hirshfeld, H. L. (1977). Theor. Chim. Acta, 44, 129-138.]) was carried out using Crystal Explorer 17.5 (Turner et al., 2017[Turner, M. J., McKinnon, J. J., Wolff, S. K., Grimwood, D. J., Spackman, P. R., Jayatilaka, D. & Spackman, M. A. (2017). CrystalExplorer17. The University of Western Australia.]). In the HS plotted over dnorm (Fig. 4[link]a), the white surface indicates contacts with distances equal to the sum of van der Waals radii, and the red and blue colours indicate distances shorter or longer than the van der Waals radii, respectively (Venkatesan et al., 2016[Venkatesan, P., Thamotharan, S., Ilangovan, A., Liang, H. & Sundius, T. (2016). Spectrochim. Acta Part A, 153, 625-636.]). The bright-red spots appearing near O3 and hydrogen atom H2A indicate their roles as the respective donor and/or acceptor atoms in hydrogen bonding. They also appear as blue and red regions corres­ponding to positive and negative potentials on the HS mapped over electrostatic potential (Spackman et al., 2008[Spackman, M. A., McKinnon, J. J. & Jayatilaka, D. (2008). CrystEngComm, 10, 377-388.]; Jayatilaka et al., 2005[Jayatilaka, D., Grimwood, D. J., Lee, A., Lemay, A., Russel, A. J., Taylor, C., Wolff, S. K., Cassam-Chenai, P. & Whitton, A. (2005). TONTO. Available at: https://dylan-jayatilaka.net/tonto]) as shown in Fig. 4[link]b. The blue regions indicate the positive electrostatic potential (hydrogen-bond donors), while the red regions indicate the negative electrostatic potential (hydrogen-bond acceptors). The shape-index of the HS is a tool to visualize the π–π stacking by the presence of adjacent red and blue triangles. Fig. 4[link]c clearly suggests that there are π–π inter­actions in (I)[link]. The overall two-dimensional fingerprint plot, Fig. 5[link]a, and those delineated into H⋯H, H⋯O/O⋯H, H⋯C/C⋯H, C⋯C, H⋯N/N⋯H, C⋯ O/O⋯C and O⋯O contacts (McKinnon et al., 2007[McKinnon, J. J., Jayatilaka, D. & Spackman, M. A. (2007). Chem. Commun. pp. 3814-3816.]) are illustrated in Fig. 5[link]b–h, respectively, together with their relative contributions to the Hirshfeld surface. The most important inter­action is H⋯H (Table 2[link]) contributing 46.8% to the overall crystal packing, which is reflected in Fig. 5[link]b as widely scattered points of high density due to the large hydrogen content of the mol­ecule with the tip at de = di = 1.07 Å. The pair of scattered points of spikes in the fingerprint plot delineated into H⋯O/O⋯H contacts (23.5% contribution to the HS,Fig. 5[link]c; Table 2[link]) have the tips at de + di = 2.09 Å. In the absence of C—H⋯π inter­actions, the pair of characteristic wings in the fingerprint plot delineated into H⋯C/C⋯H contacts (Fig. 5[link]d, 15.8%) have tips at de + di = 2.95 Å. The C⋯C contacts (Fig. 5[link]e, 7.4%) have an arrow-shaped distribution of points with its tip at de = di = 1.65 Å. The H⋯N/N⋯H contacts (Fig. 5[link]f, 2.8%) have tips at de + di = 2.78 Å. Finally, the C⋯O/O⋯C (Fig. 5[link]g) and O⋯O (Fig. 5[link]h) contacts (2.4% and 1.3% contributions, respectively, to the HS) appear with tips at de + di = 3.50 Å and de = di = 1.73 Å, respectively.

Table 2
Selected interatomic distances (Å)

O2⋯N1 2.537 (4) N1⋯N2 2.865 (4)
O3⋯C8 2.856 (4) C4⋯C6iii 3.387 (5)
O3⋯N2i 3.079 (4) C14⋯C16i 3.407 (5)
O4⋯N2 2.955 (5) C1⋯H8A 2.68
O2⋯H12ii 2.74 C6⋯H8A 2.59
O2⋯H3iii 2.62 C11⋯H1 2.28 (3)
O2⋯H1 1.72 (3) C14⋯H2Ai 2.79 (4)
O3⋯H2Ai 2.20 (4) C14⋯H8B 2.64
H15C⋯O3iv 2.70 H2⋯H2A 2.29
O3⋯H2i 2.68 H2⋯H17vi 2.33
O3⋯H8B 2.23 H3⋯H17vi 2.38
O4⋯H15Bv 2.70 H12⋯H15A 2.42
Symmetry codes: (i) [-x+1, y+{\script{1\over 2}}, -z+{\script{1\over 2}}]; (ii) [-x+2, -y+1, -z+1]; (iii) [-x+1, -y, -z+1]; (iv) [-x+2, y+{\script{1\over 2}}, -z+{\script{1\over 2}}]; (v) [x, y-1, z]; (vi) [-x+1, y-{\script{1\over 2}}, -z+{\script{1\over 2}}].
[Figure 4]
Figure 4
(a) View of the three-dimensional Hirshfeld surface of the title compound, plotted over dnorm in the range of −0.3842 to 1.4934 a.u., (b) view of the three-dimensional Hirshfeld surface of the title compound plotted over electrostatic potential energy in the range −0.0500 to 0.0500 a.u. using the STO-3 G basis set at the Hartree–Fock level of theory and (c) Hirshfeld surface of the title compound plotted over shape-index.
[Figure 5]
Figure 5
The full two-dimensional fingerprint plots for the title compound, showing (a) all inter­actions, and delineated into (b) H⋯H, (c) H⋯O/O⋯H, (d) H⋯C/C⋯H, (e) C⋯C, (f) H⋯N/N⋯H, (g) C⋯O/O⋯C and (h) O⋯O inter­actions. The di and de values are the closest inter­nal and external distances (in Å) from given points on the Hirshfeld surface.

The Hirshfeld surface representations with the function dnorm plotted onto the surface are shown for the H⋯H, H⋯O/O⋯H, H⋯C/C⋯H and C⋯C inter­actions in Fig. 6[link]a–d, respectively.

[Figure 6]
Figure 6
The Hirshfeld surface representations with the function dnorm plotted onto the surface for (a) H⋯H, (b) H⋯O/O⋯H, (c) H⋯C/C⋯H and (d) C⋯C inter­actions.

The Hirshfeld surface analysis confirms the importance of H-atom contacts in establishing the packing. The large number of H⋯H, H⋯O/O⋯H, and H⋯C/C⋯H inter­actions suggest that van der Waals inter­actions play the major role in the crystal packing (Hathwar et al., 2015[Hathwar, V. R., Sist, M., Jørgensen, M. R. V., Mamakhel, A. H., Wang, X., Hoffmann, C. M., Sugimoto, K., Overgaard, J. & Iversen, B. B. (2015). IUCrJ, 2, 563-574.]).

5. Inter­action energy calculations

The inter­molecular inter­action energies were calculated using the CE–B3LYP/6–31G(d,p) energy model available in Crystal Explorer 17.5 (Turner et al., 2017[Turner, M. J., McKinnon, J. J., Wolff, S. K., Grimwood, D. J., Spackman, P. R., Jayatilaka, D. & Spackman, M. A. (2017). CrystalExplorer17. The University of Western Australia.]), where a cluster of mol­ecules is generated by applying crystallographic symmetry operations with respect to a selected central mol­ecule within the default radius of 3.8 Å (Turner et al., 2014[Turner, M. J., Grabowsky, S., Jayatilaka, D. & Spackman, M. A. (2014). J. Phys. Chem. Lett. 5, 4249-4255.]). The total inter­molecular energy (Etot) is the sum of electrostatic (Eele), polarization (Epol), dispersion (Edis) and exchange-repulsion (Erep) energies (Turner et al., 2015[Turner, M. J., Thomas, S. P., Shi, M. W., Jayatilaka, D. & Spackman, M. A. (2015). Chem. Commun. 51, 3735-3738.]) with scale factors of 1.057, 0.740, 0.871 and 0.618, respectively (Mackenzie et al., 2017[Mackenzie, C. F., Spackman, P. R., Jayatilaka, D. & Spackman, M. A. (2017). IUCrJ, 4, 575-587.]). The hydrogen bonding inter­action energy for the N2—H2A⋯O3 hydrogen bond was calculated (in kJ mol−1) as −32.6 (Eele), −7.4 (Epol), −60.8 (Edis), 57.3 (Erep) and −57.5 (Etot).

6. Database survey

A search of the Cambridge Structural Database (CSD, updated 29 May 2021; Groom et al., 2016[Groom, C. R., Bruno, I. J., Lightfoot, M. P. & Ward, S. C. (2016). Acta Cryst. B72, 171-179.]) for 2,3,4,5-tetra­hydro-1Hbenzo[b][1,4] diazepines substituted at the 2- and 4-positions gave a substantial number of hits with seven deemed closely similar to the title mol­ecule (Fig. 7[link]). These are: A (Lal et al., 2013[Lal, M., Basha, R. S., Sarkar, S. & Khan, A. T. (2013). Tetrahedron Lett. 54, 4264-4272.]), B (Siddiqui & Siddiqui, 2020[Siddiqui, S. & Siddiqui, Z. N. (2020). Nanoscale Advance 2, 4639-4651.]), C with R = 4-ClC6H4, thio­phene, 3,4-(MeO)C6H3 and R′ = 6- methyl-2H-pyran-2,4-(3H)-dione as well as R = 6-methyl-2H- pyran-2,4-(3H)-dione and R′ = 3-BrC6H4 (Faidallah et al., 2015[Faidallah, H. M., Taib, L. A., Albeladi, S. N. A., Rahman, M. E. U., Al-Zahrani, F. A., Arshad, M. N. & Asiri, A. M. (2015). J. Chem. Res. 39, 502-508.]) and D (Wu & Wang, 2020[Wu, H. T. & Wang, L. Z. (2020). New J. Chem. 44, 10428-10440.]) (Fig. 7[link]). All have the tetra­hydro­diazepine ring adopting a boat conformation with puckering amplitudes in the range 0.702 (2) Å (for A) to 0.957 (2) Å (for C, R = thio­phene). The dihedral angles between the mean planes of the benzo rings and those of the ring-containing substituents on the seven-membered ring vary considerably, likely due to packing considerations as the steric bulk of these groups differ markedly.

[Figure 7]
Figure 7
Diagrams of compounds structurally related to (I)[link].

7. Synthesis and crystallization

To a suspension of 3-[1-(2-amino­phenyl­imino)­eth­yl]-4-hy­droxy-6-methyl­pyran-2-one (4 mmol) in ethanol (40 ml) were added 1.5 equivalents of furan-2-carboxaldehyde and four drops of tri­fluoro­acetic acid (TFA). The mixture was refluxed for 3 h. Cooling to room temperature induced the precipitation of a yellow solid, which was filtered off, and then washed with 20 ml of cold ethanol. Crystals suitable for X-ray analysis were obtained by recrystallization of the bulk from ethanol solution to afford colourless crystals (yield: 75%).

8. Refinement

Crystal, data collection and refinement details are presented in Table 3[link]. Inspection of the data with CELL_NOW (Sheldrick, 2009[Sheldrick, G. M. (2009). TWINABS and CELL_NOW. University of Göttingen, Göttingen, Germany.]) revealed that the crystal under investigation was twinned by a 180° rotation about the a* axis with a subsequently refined 78:22 ratio of the two twin components. The full two-component reflection file (HKLF-5 format) was used for the final refinement. Hydrogen atoms attached to carbon were included as riding contributions in idealized positions (C—H = 0.95–0.99 Å) with Uiso(H) = 1.2–1.5Ueq(C). Those attached to nitro­gen were restrained to a target bond length of 0.91 Å using the DFIX instruction in SHELXL. The displacement ellipsoids of the O1/C10–C14 ring suggest a possible slight disorder in this group, but it does not appear large enough to model with alternate locations of the atoms.

Table 3
Experimental details

Crystal data
Chemical formula C19H16N2O4
Mr 336.34
Crystal system, space group Monoclinic, P21/c
Temperature (K) 150
a, b, c (Å) 7.0111 (8), 11.0123 (13), 20.493 (2)
β (°) 96.202 (5)
V (Å3) 1573.0 (3)
Z 4
Radiation type Mo Kα
μ (mm−1) 0.10
Crystal size (mm) 0.34 × 0.22 × 0.11
 
Data collection
Diffractometer Bruker D8 QUEST PHOTON 3 diffractometer
Absorption correction Multi-scan (TWINABS; Sheldrick, 2009[Sheldrick, G. M. (2009). TWINABS and CELL_NOW. University of Göttingen, Göttingen, Germany.])
Tmin, Tmax 0.97, 0.99
No. of measured, independent and observed [I > 2σ(I)] reflections 5201, 5201, 4007
Rint 0.081
(sin θ/λ)max (Å−1) 0.672
 
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.079, 0.214, 1.14
No. of reflections 5201
No. of parameters 236
No. of restraints 2
H-atom treatment H atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3) 0.54, −0.30
Computer programs: APEX3 and SAINT (Bruker, 2020[Bruker (2020). APEX3 and SAINT. Madison, WI. Bruker AXS Inc., Madison, Wisconsin, USA.]), SHELXT (Sheldrick, 2015a[Sheldrick, G. M. (2015a). Acta Cryst. A71, 3-8.]), SHELXL2018/1 (Sheldrick, 2015b[Sheldrick, G. M. (2015b). Acta Cryst. C71, 3-8.]), DIAMOND (Brandenburg & Putz, 2012[Brandenburg, K. & Putz, H. (2012). DIAMOND, Crystal Impact GbR, Bonn, Germany.]) and publCIF (Westrip, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).

Supporting information

CCDC reference: 2097593

Crystal structure: contains datablocks I, global. DOI: https://doi.org/10.1107/S2056989021007441/wm5612sup1.cif

Supporting information file. DOI: https://doi.org/10.1107/S2056989021007441/wm5612Isup3.cdx

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989021007441/wm5612Isup4.hkl

Supporting information file. DOI: https://doi.org/10.1107/S2056989021007441/wm5612Isup4.cml

checkCIF report


Computing details top

Data collection: APEX3 (Bruker, 2020); cell refinement: SAINT (Bruker, 2020); data reduction: SAINT (Bruker, 2020); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2018/1 (Sheldrick, 2015b); molecular graphics: DIAMOND (Brandenburg & Putz, 2012); software used to prepare material for publication: publCIF (Westrip, 2010).

(S,E)-3-[4-(Furan-2-yl)-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-2-ylidene]-6-methyl-2H-pyran-2,4(3H)-dione top
Crystal data top
C19H16N2O4F(000) = 704
Mr = 336.34Dx = 1.420 Mg m−3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
a = 7.0111 (8) ÅCell parameters from 9980 reflections
b = 11.0123 (13) Åθ = 2.7–28.4°
c = 20.493 (2) ŵ = 0.10 mm−1
β = 96.202 (5)°T = 150 K
V = 1573.0 (3) Å3Block, colourless
Z = 40.34 × 0.22 × 0.11 mm
Data collection top
Bruker D8 QUEST PHOTON 3
diffractometer		5201 independent reflections
Radiation source: fine-focus sealed tube4007 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.081
Detector resolution: 7.3910 pixels mm-1θmax = 28.5°, θmin = 2.7°
φ and ω scansh = −9→9
Absorption correction: multi-scan
(TWINABS; Sheldrick, 2009)		k = 0→14
Tmin = 0.97, Tmax = 0.99l = 0→27
5201 measured reflections
Refinement top
Refinement on F2Primary atom site location: dual
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.079Hydrogen site location: mixed
wR(F2) = 0.214H atoms treated by a mixture of independent and constrained refinement
S = 1.14 w = 1/[σ2(Fo2) + (0.0648P)2 + 2.9838P]
where P = (Fo2 + 2Fc2)/3
5201 reflections(Δ/σ)max < 0.001
236 parametersΔρmax = 0.54 e Å−3
2 restraintsΔρmin = −0.30 e Å−3
Special details top

Experimental. The diffraction data were obtained from 9 sets of frames, each of width 0.5° in ω or φ, collected with scan parameters determined by the "strategy" routine in APEX3. The scan time was 20 sec/frame. Analysis of 2110 reflections having I/σ(I) > 15 and chosen from the full data set with CELL_NOW (Sheldrick, 2008) showed the crystal to belong to the monoclinic system and to be twinned by a 180° rotation about the a axis. The raw data were processed using the multi-component version of SAINT under control of the two-component orientation file generated by CELL_NOW.

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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. H-atoms attached to carbon were placed in calculated positions (C—H = 0.95 - 0.99 Å) and were included as riding contributions with isotropic displacement parameters 1.2 - 1.5 times those of the attached atoms. Those attached to nitrogen were placed in locations derived from a difference map and refined with a DFIX 0.91 0.01 instruction. Refined as a 2-component twin.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O10.8749 (4)0.5209 (2)0.31078 (12)0.0307 (6)
O20.7779 (4)0.3547 (3)0.48140 (13)0.0386 (7)
O30.8042 (4)0.3592 (3)0.25076 (12)0.0348 (7)
O40.6845 (5)−0.1158 (3)0.23160 (17)0.0516 (9)
N10.7413 (5)0.1528 (3)0.42168 (15)0.0309 (7)
H10.750 (7)0.206 (3)0.4557 (16)0.052 (14)*
N20.4861 (5)0.0341 (3)0.32311 (16)0.0325 (8)
H2A0.381 (5)−0.006 (4)0.305 (2)0.066 (17)*
C10.5648 (5)−0.0283 (3)0.37991 (18)0.0293 (8)
C20.5022 (6)−0.1448 (4)0.3935 (2)0.0346 (9)
H20.417357−0.1859840.3616390.042*
C30.5608 (7)−0.2015 (4)0.4524 (2)0.0410 (11)
H30.515597−0.2808020.4605480.049*
C40.6847 (7)−0.1440 (4)0.4995 (2)0.0422 (11)
H40.726016−0.1835960.5397290.051*
C50.7479 (6)−0.0280 (4)0.48747 (19)0.0350 (9)
H50.8317450.0126670.5198690.042*
C60.6895 (6)0.0296 (3)0.42827 (18)0.0278 (8)
C70.7802 (5)0.2070 (3)0.36688 (18)0.0270 (8)
C80.8001 (6)0.1246 (4)0.30983 (19)0.0342 (9)
H8A0.8737000.0515970.3254640.041*
H8B0.8733510.1670010.2779630.041*
C90.6076 (6)0.0860 (4)0.27573 (19)0.0322 (9)
H90.5417950.1607450.2569970.039*
C100.8108 (5)0.3343 (3)0.36710 (17)0.0261 (8)
C110.8122 (5)0.4025 (3)0.42765 (18)0.0288 (8)
C120.8580 (5)0.5294 (3)0.42500 (18)0.0292 (8)
H120.8646320.5762540.4641030.035*
C130.8913 (6)0.5830 (3)0.36913 (19)0.0290 (8)
C140.8277 (5)0.3984 (3)0.30673 (18)0.0264 (8)
C150.9490 (7)0.7108 (4)0.3614 (2)0.0390 (10)
H15A0.9670500.7500570.4045070.058*
H15B0.8486670.7535210.3332460.058*
H15C1.0694200.7135700.3411960.058*
C160.6325 (6)0.0022 (3)0.21928 (19)0.0305 (8)
C170.6236 (6)0.0268 (4)0.15511 (18)0.0382 (10)
H170.5941680.1024850.1341010.046*
C180.6687 (7)−0.0869 (5)0.1245 (2)0.0530 (14)
H180.671856−0.1005530.0788680.064*
C190.7044 (7)−0.1673 (5)0.1713 (3)0.0563 (14)
H190.739039−0.2493970.1647140.068*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O10.0372 (16)0.0320 (14)0.0233 (13)−0.0023 (12)0.0052 (11)0.0010 (11)
O20.0556 (18)0.0400 (16)0.0201 (13)−0.0164 (14)0.0036 (12)−0.0005 (12)
O30.0434 (17)0.0393 (16)0.0213 (13)0.0028 (13)0.0017 (12)−0.0026 (11)
O40.063 (2)0.0425 (18)0.052 (2)0.0052 (16)0.0182 (17)0.0024 (16)
N10.0393 (19)0.0303 (17)0.0230 (16)−0.0078 (15)0.0023 (14)−0.0018 (13)
N20.0335 (19)0.0390 (19)0.0253 (16)−0.0079 (15)0.0038 (14)0.0006 (14)
C10.032 (2)0.032 (2)0.0263 (19)−0.0001 (17)0.0106 (16)−0.0033 (16)
C20.040 (2)0.031 (2)0.034 (2)−0.0042 (18)0.0112 (18)−0.0050 (17)
C30.057 (3)0.028 (2)0.042 (2)−0.005 (2)0.022 (2)0.0029 (18)
C40.055 (3)0.043 (2)0.031 (2)0.007 (2)0.013 (2)0.0119 (19)
C50.039 (2)0.042 (2)0.0250 (19)0.0008 (19)0.0062 (17)0.0020 (17)
C60.034 (2)0.0257 (18)0.0252 (18)−0.0027 (16)0.0093 (15)−0.0001 (15)
C70.0247 (19)0.0323 (19)0.0238 (18)−0.0049 (16)0.0020 (15)−0.0009 (15)
C80.041 (2)0.034 (2)0.030 (2)−0.0044 (18)0.0093 (17)−0.0025 (17)
C90.038 (2)0.034 (2)0.0251 (19)−0.0018 (18)0.0073 (16)−0.0003 (16)
C100.029 (2)0.0281 (18)0.0213 (17)−0.0044 (15)0.0037 (15)0.0008 (14)
C110.030 (2)0.034 (2)0.0218 (18)−0.0079 (16)0.0009 (15)−0.0001 (15)
C120.036 (2)0.0288 (19)0.0227 (18)−0.0055 (16)0.0021 (15)−0.0031 (15)
C130.030 (2)0.0299 (19)0.0277 (19)−0.0011 (16)0.0040 (16)−0.0011 (15)
C140.0254 (19)0.0285 (19)0.0253 (18)−0.0006 (15)0.0027 (15)0.0005 (15)
C150.049 (3)0.034 (2)0.035 (2)−0.004 (2)0.014 (2)0.0023 (18)
C160.034 (2)0.0289 (19)0.0282 (19)−0.0054 (17)0.0044 (16)−0.0004 (16)
C170.036 (2)0.056 (3)0.0219 (19)0.008 (2)0.0042 (17)0.0102 (18)
C180.033 (3)0.090 (4)0.035 (2)−0.003 (3)0.003 (2)−0.026 (3)
C190.048 (3)0.047 (3)0.078 (4)−0.003 (2)0.025 (3)−0.023 (3)
Geometric parameters (Å, º) top
O1—C131.372 (4)C7—C101.419 (5)
O1—C141.389 (4)C7—C81.498 (5)
O2—C111.267 (4)C8—C91.513 (6)
O3—C141.220 (4)C8—H8A0.9900
O4—C161.366 (5)C8—H8B0.9900
O4—C191.380 (6)C9—C161.504 (5)
N1—C71.326 (5)C9—H91.0000
N1—C61.415 (5)C10—C141.440 (5)
N1—H10.912 (12)C10—C111.449 (5)
N2—C11.412 (5)C11—C121.436 (5)
N2—C91.474 (5)C12—C131.331 (5)
N2—H2A0.906 (12)C12—H120.9500
C1—C21.393 (5)C13—C151.477 (5)
C1—C61.402 (5)C15—H15A0.9800
C2—C31.382 (6)C15—H15B0.9800
C2—H20.9500C15—H15C0.9800
C3—C41.381 (6)C16—C171.338 (5)
C3—H30.9500C17—C181.451 (7)
C4—C51.383 (6)C17—H170.9500
C4—H40.9500C18—C191.309 (7)
C5—C61.391 (5)C18—H180.9500
C5—H50.9500C19—H190.9500
O2···C3i3.322 (5)C3···C15v3.591 (6)
O2···N12.537 (4)C4···C6i3.387 (5)
O2···C12ii3.282 (4)C10···C18iii3.497 (6)
O3···C93.372 (4)C11···C17iii3.600 (5)
O3···C82.856 (4)C11···C18iii3.428 (5)
O3···N2iii3.079 (4)C12···C12ii3.541 (5)
O4···N22.955 (5)C12···C17iii3.589 (5)
O4···C13.376 (5)C14···C16iii3.407 (5)
O1···H2Aiii2.84 (4)C1···H8A2.68
O2···H12ii2.74C2···H17vi2.91
O2···H3i2.62C3···H17vi2.93
O2···H11.72 (3)C6···H8A2.59
O3···H92.87C11···H12.28 (3)
O3···H2Aiii2.20 (4)C14···H2Aiii2.79 (4)
H15C···O3iv2.70C14···H8B2.64
O3···H2iii2.68H2···H2A2.29
O3···H8B2.23H2···H17vi2.33
O4···H8A2.88H3···H17vi2.38
O4···H15Bv2.70H5···H12.55
N1···N22.865 (4)H12···H15A2.42
N2···H19iii2.89
C13—O1—C14122.3 (3)C16—C9—C8110.8 (3)
C16—O4—C19106.0 (4)N2—C9—H9107.3
C7—N1—C6126.2 (3)C16—C9—H9107.3
C7—N1—H1111 (3)C8—C9—H9107.3
C6—N1—H1123 (3)C7—C10—C14120.5 (3)
C1—N2—C9122.0 (3)C7—C10—C11120.1 (3)
C1—N2—H2A109 (3)C14—C10—C11119.2 (3)
C9—N2—H2A115 (3)O2—C11—C12120.1 (3)
C2—C1—C6117.6 (4)O2—C11—C10123.0 (3)
C2—C1—N2120.6 (4)C12—C11—C10116.9 (3)
C6—C1—N2121.3 (3)C13—C12—C11121.7 (3)
C3—C2—C1121.4 (4)C13—C12—H12119.2
C3—C2—H2119.3C11—C12—H12119.2
C1—C2—H2119.3C12—C13—O1121.5 (3)
C4—C3—C2120.6 (4)C12—C13—C15126.2 (4)
C4—C3—H3119.7O1—C13—C15112.3 (3)
C2—C3—H3119.7O3—C14—O1114.0 (3)
C3—C4—C5119.3 (4)O3—C14—C10128.3 (3)
C3—C4—H4120.4O1—C14—C10117.7 (3)
C5—C4—H4120.4C13—C15—H15A109.5
C4—C5—C6120.5 (4)C13—C15—H15B109.5
C4—C5—H5119.8H15A—C15—H15B109.5
C6—C5—H5119.8C13—C15—H15C109.5
C5—C6—C1120.8 (4)H15A—C15—H15C109.5
C5—C6—N1117.8 (3)H15B—C15—H15C109.5
C1—C6—N1121.1 (3)C17—C16—O4111.0 (4)
N1—C7—C10119.1 (3)C17—C16—C9129.4 (4)
N1—C7—C8115.7 (3)O4—C16—C9119.5 (3)
C10—C7—C8125.0 (3)C16—C17—C18105.1 (4)
C7—C8—C9112.2 (3)C16—C17—H17127.4
C7—C8—H8A109.2C18—C17—H17127.4
C9—C8—H8A109.2C19—C18—C17107.5 (4)
C7—C8—H8B109.2C19—C18—H18126.3
C9—C8—H8B109.2C17—C18—H18126.3
H8A—C8—H8B107.9C18—C19—O4110.4 (4)
N2—C9—C16113.1 (3)C18—C19—H19124.8
N2—C9—C8110.8 (3)O4—C19—H19124.8
C9—N2—C1—C2−126.6 (4)C7—C10—C11—O2−3.5 (6)
C9—N2—C1—C661.5 (5)C14—C10—C11—O2172.3 (4)
C6—C1—C2—C3−0.2 (6)C7—C10—C11—C12175.6 (3)
N2—C1—C2—C3−172.4 (4)C14—C10—C11—C12−8.6 (5)
C1—C2—C3—C4−0.3 (6)O2—C11—C12—C13−178.7 (4)
C2—C3—C4—C50.8 (7)C10—C11—C12—C132.2 (6)
C3—C4—C5—C6−0.8 (6)C11—C12—C13—O13.1 (6)
C4—C5—C6—C10.4 (6)C11—C12—C13—C15−176.7 (4)
C4—C5—C6—N1173.1 (4)C14—O1—C13—C12−1.7 (6)
C2—C1—C6—C50.1 (5)C14—O1—C13—C15178.1 (3)
N2—C1—C6—C5172.2 (4)C13—O1—C14—O3174.5 (3)
C2—C1—C6—N1−172.3 (3)C13—O1—C14—C10−4.9 (5)
N2—C1—C6—N1−0.2 (5)C7—C10—C14—O36.4 (6)
C7—N1—C6—C5147.3 (4)C11—C10—C14—O3−169.4 (4)
C7—N1—C6—C1−40.0 (6)C7—C10—C14—O1−174.3 (3)
C6—N1—C7—C10173.6 (4)C11—C10—C14—O19.9 (5)
C6—N1—C7—C8−10.1 (6)C19—O4—C16—C17−1.4 (5)
N1—C7—C8—C979.4 (4)C19—O4—C16—C9−177.3 (4)
C10—C7—C8—C9−104.5 (4)N2—C9—C16—C17135.7 (4)
C1—N2—C9—C1694.4 (4)C8—C9—C16—C17−99.2 (5)
C1—N2—C9—C8−30.7 (5)N2—C9—C16—O4−49.3 (5)
C7—C8—C9—N2−52.9 (4)C8—C9—C16—O475.8 (5)
C7—C8—C9—C16−179.3 (3)O4—C16—C17—C181.8 (5)
N1—C7—C10—C14−171.6 (4)C9—C16—C17—C18177.1 (4)
C8—C7—C10—C1412.4 (6)C16—C17—C18—C19−1.4 (5)
N1—C7—C10—C114.1 (6)C17—C18—C19—O40.6 (6)
C8—C7—C10—C11−171.9 (4)C16—O4—C19—C180.5 (5)
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x+2, −y+1, −z+1; (iii) −x+1, y+1/2, −z+1/2; (iv) −x+2, y+1/2, −z+1/2; (v) x, y−1, z; (vi) −x+1, y−1/2, −z+1/2.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N1—H1···O20.91 (1)1.72 (3)2.538 (4)148 (4)
N2—H2A···O3vi0.91 (1)2.20 (2)3.079 (4)162 (5)
Symmetry code: (vi) −x+1, y−1/2, −z+1/2.
 

Acknowledgements

Authors' contributions are as follows. Conceptualization,MEH, SL, LEG and NKS; methodology, BA and MEH; investigation, MEH,JTM and TH; writing (original draft), JTM, TH and NKS; writing (review and editing of the manuscript), MEH, SL and LEG; visualization, NKS and EME; resources, EME and MEH; supervision, BA and NKS.

Funding information

JTM thanks Tulane University for support of the Tulane Crystallography Laboratory. TH is grateful to Hacettepe University Scientific Research Project Unit (grant No. 013 D04 602 004).

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Journal logoCRYSTALLOGRAPHIC
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ISSN: 2056-9890
Volume 77| Part 8| August 2021| Pages 834-838
https://doi.org/10.1107/S2056989021007441
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