UNEC Journal of Engineering and Applied Sciences Volume 2 No 1 (2022), pages 64-73 Cite this article, 
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The importance of non-covalent interactions has long been recognized and is currently attracting the attention of scientists working in various fields of chemistry and technology [1,2]. Non-covalent interactions include hydrogen, halogen, chalcogen and pnicogenic bonds, Van der Vaals forces, π-interactions, and so on. It should be noted that different types of bonds in different fields of chemistry can be considered as "non-covalent". For example, in organic chemistry, coordination bond is considered a non-covalent interaction. In general, non-covalent interactions, which are characterized by a significant reduction in the distance between atoms compared to the sum of the Van der Vaals radii, have a certain direction in space and at the same time have much less energy than a typical "covalent" bond. The weakness of non-covalent interactions and their diverse nature, such as the synthesis of organic, inorganic, coordinated and metal-organic compounds, supramolecular aggregates, are of great application. With the help of non-covalent interactions, reagents can change the energy profile of the reaction and facilitate its course by providing the appropriate geometric coverage of the fragments entering the reaction. Thus, the formation of numerous non-covalent interactions between reaction products can be considered the main driving force of the process. As an example, we can show the non-covalent bonds formed by halogen atoms in compounds synthesized by us on the basis of catalytic olefinization reaction of N-nonsubstituted and N-substituted hydrazones of tetrafluoride terephthalic aldehyde[3,4] (Scheme 2,3. Figure 1,2.).
Scheme 1. Synthesis of 1,4-bis (2,2-dihalogenvinyl)-2,3,5,6-tetrafluorbenzenes
Figure 1. Intermolecular non-covalent F ∙∙∙ F, F ∙∙∙ Cl, Cl ∙∙∙ CI, F∙∙∙ Br and Br∙∙∙ Br bonds in 1,4-bis(2,2-dihalogenvinyl)-2,3,5,6-tetrafluorbenzenesare shown by broken lines
Scheme 2. Synthesis of halogenated bis-diazo dyes
Figure 2. Intermolecular non-covalent bonds are shown by broken lines
It should be noted that in previous studies, it was synthesized dichlorodiazadiene derivatives on the basis of some N-substituted hydrazones of o, m- and p-nitrobenzoic aldehydes, and the role of many non-covalent bonds (halogen, hydrogen, nitrogen-halogen, halogen-chalcogen, halogen-halogen, pnicogenic N...Cl and etc) in crystal formation in the obtained compounds (more than 20) was studied. It was found that the nature of the functional groups and the position in the benzene ring had a significant effect on the crystal design [5-9] (Scheme 3, Figure 3). The role of non-covalent bonds in the formation of crystals of many synthesized compounds was also determined by Hirschfeld's surface analysis [10-17].
Scheme 3. Synthesis of (E)-1-(4-substitutesphenyl)-2-(2,2-dichloro-1-(nitro-phenyl)vinyl)diazene
Figure 3. Intermolecular non-covalent bonds are shown by broken lines
It should be noted that the synthesized dichlorodiazabutadienes are compounds of interest to synthetics with their unique structure. Thus, the presence of a diaza group, heminal dichlorine atoms, a combined heterodiene system in the compound led to their application as synthons suitable for organic synthesis [18-21].
At the same time, dichlorodiazadienes are well soluble in organic solvents, so it increases their relevance as suitable synthons in drugs, dyes and other various fields of application. In view of all this, corresponding phenylhydrazones (1-6) were synthesized from the reactions of o- and m-nitrobenzaldehyde with 3-halogenphenylhydrazines, and dichlorodiazadienes (7-12) were obtained from the reaction of the latter with CCl4 (Scheme4).
Scheme 4. Synthesis of (E)-1-(3-halogenphenyl)-2-(2,2-dichloro-1-(nitro-phenyl)vinyl)diazene
The structure of synthesized hydrazones and dichlorodiazadienes (1H and 13C) was determined on the basis of NMR spectra.
Hydrazone resonates in the DMSO-d6 (dimethylsulfoxide-D) solvent in the 1H NMR spectrum at room temperature δ6.82–7.28, which indicates protons in the aromatic part. At the same time, a singlet was observed at δ8.28, which proves the presence of the H atom in the CH group. In the 13C NMR spectrum of the compound, all carbon atoms were also found in the expected areas. The interpretation of the spectra proves the structure of the compounds. The known spectrum is shown below.
Spectrum 1. 1H spectrum of substance 2
In the corresponding dichlorodiazabutadienes, the protons in the aromatic part resonate in δ7.33-8.25 in the CDCl3 solvent at room temperature. In the 13C NMR spectrum of 7-12 compounds, all carbon atoms were found in the expected areas. The interpretation of the spectra clearly proves the structure of the compounds. One of the known spectra is shown below.
Spectrum 2. 1H spectrum of substance 8
NMR 1H and 13C spectra were recorded on a Brooker Avance 300 MHz spectrometer in CDCl3 and DMSO. SiMe4 was used as an internal standard. TLC was carried out on Silufol plateUV-254, column chromatography - on Merk silica gel.
General methodology of hydrazone synthesis:
Ethanol (20-50 ml), 0.820 g of CH3COONa (10 mmol) and 1 mmol of corresponding aromatic aldehydes are added to (5 mmol) phenylhydrazine.The reaction lasts 1 hour. After cooling, 50 ml of water is added to the solution and heated to 60C. The reaction ends.
Compound 1. (E)-1-(3-bromophenyl)-2-(2-nitro-benzyliden) hydrazine. C13H10BrN3O2 (M=320.146), yield 78%, Tmelt= 167 0C, 1H NMR (300 MHz, DMSO-d6) δ 11.02 (s, 1H), 8.26 (s, 1H), 8.16 (d, J = 7.9 Hz, 1H), 7.98 (d, J = 8.1 Hz, 1H), 7.73 (t, J = 7.6 Hz, 1H), 7.52 (t, J = 7.6 Hz, 1H), 7.28 (s, 1H), 7.20 (t, J = 8.0 Hz, 1H), 7.03 (d, J = 8.1 Hz, 1H), 6.96 (d, J = 7.7 Hz, 1H). 13C NMR (75 MHz, DMSO) δ 147.42, 146.59, 133.70, 132.91, 131.62, 129.87, 129.12, 127.76, 124.98, 122.97, 122.51, 114.95, 111.95.
Compound 2. (E)-1-(3-chlorophenyl)-2-(2-nitro-benzyliden) hydrazine. C13H10ClN3O2 (M=275,046), yield 82%, Tmelt= 160 0C, 1H NMR (300 MHz, DMSO-d6) δ 11.03 (s, 1H), 8.27 (s, 1H), 8.17 (d, J = 7.9 Hz, 1H), 7.98 (d, J = 8.1 Hz, 1H), 7.73 (t, J = 7.5 Hz, 1H), 7.52 (t, J = 7.6 Hz, 1H), 7.26 (t, J = 8.0 Hz, 1H), 7.14 (s, 1H), 6.99 (d, J = 8.1 Hz, 1H), 6.83 (d, J = 7.9 Hz, 1H). 13C NMR (75 MHz, DMSO) δ 147.43, 146.49, 134.41, 133.68, 132.86, 131.32, 129.89, 129.11, 127.77, 124.97, 119.61, 112.10, 111.58.
Compound 3. (E)-1-(3-fluorophenyl)-2-(2-nitro-benzyliden) hydrazine. C13H10FN3O2 (M=259.240), yield 80%, Tmelt= 171 0C, 1H NMR (300 MHz, DMSO-d6) δ 11.06 (s, 1H), 8.26 (s, 1H), 8.17 (d, J = 7.9 Hz, 1H), 7.98 (d, J = 7.9 Hz, 1H), 7.72 (t, J = 7.5 Hz, 1H), 7.52 (t, J = 7.5 Hz, 1H), 7.26 (q, J = 7.7 Hz, 1H), 6.88 (dd, J = 16.2, 10.0 Hz, 2H), 6.60 (t, J = 8.2 Hz, 1H). 13C NMR (75 MHz, DMSO) δ 133.64, 132.58, 131.38, 131.25, 129.91, 129.06, 127.77, 124.96, 108.99, 106.46, 106.18, 99.58, 99.23.
Compound 4. (E)-1-(3-bromophenyl)-2-(3-nitro-benzyliden) hydrazine. C13H10BrN3O2 (M=320.146), yield 78%, Tmelt= 167 0C, 1H NMR (300 MHz, DMSO-d6) δ 10.84 (s, 1H), 8.43 (s, 1H), 8.12 (d, J = 7.8 Hz, 2H), 7.98 (s, 1H), 7.67 (t, J = 7.9 Hz, 1H), 7.28 (s, 1H), 7.19 (t, J = 8.0 Hz, 1H), 7.07 (d, J = 8.0 Hz, 1H), 6.94 (d, J = 7.7 Hz, 1H). 13C NMR (75 MHz, DMSO) δ 148.73, 146.80, 137.82, 135.88, 132.14, 131.61, 130.64, 122.91, 122.88, 122.17, 120.44, 114.84, 111.82.
Compound 5. (E)-1-(3-chlorophenyl)-2-(3-nitro-benzyliden) hidrazine. C13H10ClN3O2 (M=275,046), yield 82%, Tmelt= 160 0C, 1H NMR (300 MHz, DMSO-d6) δ 10.85 (s, 1H), 8.42 (s, 1H), 8.11 (d, J = 7.7 Hz, 2H), 7.97 (s, 1H), 7.65 (t, J = 7.9 Hz, 1H), 7.24 (t, J = 7.9 Hz, 1H), 7.14 (s, 1H), 7.02 (d, J = 8.1 Hz, 1H), 6.80 (d, J = 7.6 Hz, 1H).13C NMR (75 MHz, DMSO) δ 162.32, 148.71, 146.69, 137.84, 135.79, 134.35, 132.12, 131.25, 130.58, 122.83, 120.42, 119.25, 111.99, 111.44.
Compound 6. (E)-1-(3-fluorophenyl)-2-(4-nitrobenzyliden) hydrazine. C13H10FN3O2 (M=259.240), yield 83%, Tmelt= 115 0C, 1H NMR (300 MHz, DMSO-d6) δ 10.87 (s, 1H), 8.44 (s, 1H), 8.12 (d, J = 7.5 Hz, 2H), 7.98 (s, 1H), 7.66 (t, J = 7.8 Hz, 1H), 7.26 (d, J = 7.4 Hz, 1H), 6.90 (t, J = 9.7 Hz, 2H), 6.57 (t, J = 8.0 Hz, 1H).13C NMR (75 MHz, DMSO) δ 148.73, 137.90, 135.56, 132.14, 131.20, 130.60, 122.81, 120.40, 108.89, 106.12, 105.83, 99.48, 99.13.
General method of synthesis of dichlorodiazabutadienes
1 mmol of starting hydrazone is added to the flask, followed by 10-12 ml of DMSO, followed by (290 mg; 1.25 mol / eq) TMEDA. Then CuCl (6 mg; 3 mol%) is added. CCl4 (4-5 mol / eq; 1.5 g) is added to the latter. At the end of the reaction, which lasts 3 hours, the extraction process begins - methylene chloride (3 * 15 ml), NaCl (1 * 50 ml), Na2SO4. Solvents used in column chromatography - hexane: dichloromethane 1: 5.
Compound 7. (E)-1-(3-bromophenyl)-2-(2,2-dichloro-1-(2-nitro-phenyl)vinyl)diazene, C14H8BrCl2N3O2 (M=401.041), yield 51%, Tmelt= 87 0C, 1H NMR (300 MHz, Chloroform-d)) δ 7.92 (t, J = 2.0 Hz, 1H), 7.86 (dd, J = 7.5, 2.0 Hz, 1H), 7.64 (tt, J = 7.7, 2.0 Hz, 3H), 7.56 (td, J = 7.5, 2.0 Hz, 1H), 7.39 – 7.27 (m, 2H). 13C NMR (75 MHz, CDCl3) δ 150.85, 149.53, 143.54, 136.19, 133.89, 132.53, 130.21, 129.69, 129.00, 124.77, 123.72, 122.47, 120.15
Compound 8. (E)-1-(3-chlorophenyl)-2-(2,2-dichloro-1-(2-nitrophenyl)vinyl)diazene. C14H8Cl3N3O2 (M=356.587), yield 53%, Tmelt= 75 0C, 1H NMR (300 MHz, Chloroform-d) δ 8.24 (d, J = 8.0 Hz, 1H), 7.76 – 7.54 (m, 4H), 7.44 – 7.32 (m, 3H). 13C NMR (75 MHz, CDCl3) δ 153.10, 150.40, 147.99, 136.73, 135.12, 133.83, 132.19, 131.56, 130.35, 130.12, 128.15, 124.59, 122.48.
Compound 9. (E)-1-(3-fluorophenyl)-2-(2,2-dichloro-1-(2-nitrophenyl)vinyl)diazene. C14H8 FCl2N3O2 (M=340.135), yield 43%, Tmelt= 65 0C, 1H NMR (300 MHz, Chloroform-d) δ 7.86 (dd, J = 7.5, 2.0 Hz, 1H), 7.65 (dd, J = 7.4, 2.1 Hz, 1H), 7.57 (td, J = 7.5, 1.9 Hz, 1H), 7.45 (ddt, J = 10.7, 8.7, 2.0 Hz, 2H), 7.41 (td, J = 7.4, 5.6 Hz, 1H), 7.35 (td, J = 7.5, 2.0 Hz, 1H), 7.18 (ddt, J = 9.3, 7.4, 2.0 Hz, 1H). 13C NMR (75 MHz, CDCl3) δ 161.86, 150.70, 150.64, 149.53, 143.54, 136.19, 133.89, 132.53, 129.69, 123.72, 123.58, 119.08, 115.31, 110.68.
Compound 10. (E)-1-(3-bromophenyl)-2-(2,2-dichloro-1-(3-nitro-phenyl)vinyl)diazene, C14H8BrCl2N3O2 (M=401.041), yield 56%, Tmelt= 91 0C, 1H NMR (300 MHz, Chloroform-d)) δ 8.33 (t, J = 2.0 Hz, 1H), 8.19 (dt, J = 7.5, 2.0 Hz, 1H), 7.79 – 7.70 (m, 2H), 7.64 (ddt, J = 6.9, 4.3, 2.0 Hz, 2H), 7.50 (t, J = 7.5 Hz, 1H), 7.33 (t, J = 7.5 Hz, 1H). 13C NMR (75 MHz, CDCl3) δδ 150.80, 147.58, 145.84, 135.51, 133.98, 133.48, 130.37, 130.19, 129.00, 127.37, 126.40, 124.98, 122.40, 120.17.
Compound 11. (E)-1-(3-chlorophenyl)-2-(2,2-dichloro-1-(3-nitrophenyl)vinyl)diazene. C14H8Cl3N3O2 (M=356.587), yield 59%, Tmelt= 69 0C, 1H NMR (300 MHz, Chloroform-d) δ 8.33 (t, J = 2.0 Hz, 1H), 8.19 (dt, J = 7.3, 2.0 Hz, 1H), 7.69 – 7.61 (m, 3H), 7.57 (dt, J = 7.5, 2.0 Hz, 1H), 7.50 (t, J = 7.5 Hz, 1H), 7.38 (t, J = 7.4 Hz, 1H). 13C NMR (75 MHz, CDCl3) δ13C NMR (125 MHz, Common NMR Solvents) δ 150.54, 147.58, 145.84, 135.51, 135.08, 133.98, 133.48, 130.64, 130.37, 130.06, 127.37, 126.40, 122.15, 121.57.
Compound 12. (E)-1-(3-fluorophenyl)-2-(2,2-dichloro-1-(3-nitrophenyl)vinyl)diazene. C14H8 FCl2N3O2 (M=340.135), yield 39%, Tmelt= 72 0C, 1H NMR (300 MHz, Chloroform-d) δ 8.33 (t, J = 2.0 Hz, 1H), 8.19 (dt, J = 7.5, 2.0 Hz, 1H), 7.64 (dt, J = 7.5, 2.0 Hz, 1H), 7.57 – 7.47 (m, 2H), 7.42 (td, J = 7.5, 5.6 Hz, 1H), 7.56 (dt, J = 8.8, 2.0 Hz, 1H), 7.19 (ddt, J = 9.3, 7.5, 2.0 Hz, 1H), 13C NMR (75 MHz, CDCl3) δ 163.88, 150.89, 147.58, 145.84, 135.51, 133.98, 133.48, 130.37, 127.37, 126.40, 123.52, 119.06, 115.15, 110.52.
In previous studies, the synthesis of dichlorodiazadiene derivatives on the basis of some N-substituted hydrazones of o-, m- and p-nitrobenzoic aldehydes was carried out, and many non-covalent bonds (hydrogen, nitrogen-halogen, halogen-chalcogen, halogen-halogen, pnicogenic bonds and etc) in the obtained compounds have been studied for their role in crystal formation. It was found that the nature of the functional groups and the position in the benzene ring had a significant effect on the crystal design. Continuing research in this direction, dichlorodiazadienes were synthesized from the reaction of CCl4with corresponding phenylhydrazones, obtained from the reaction of o- and m-nitrobenzaldehyde with meta-halogenated phenylhydrazines. The structure of the synthesized compounds was determined by the NMR method.
1 P. M. Pihko (Ed.), Hydrogen Bonding in Organic Synthesis 2009.
2 A.M. Maharramov, K.T. Mahmudov, M.N. Kopylovich, A.J. Pombeiro, editors. Non-covalent interactions in the synthesis and design of new compounds (2016) 480p.
3 V.M. Muzalevsky, A.M. Maharramov, N.G. Shikaliyev, N.V. Gurbanova, S.J. Heydarova, E.S. Balenkova, A.V. Shastin, V.G. Nenajdenko, News of the Russian Academy of Sciences 3 (2013) 677.
4 N.G. Shikhaliyev, N.E. Ahmadova, A.V. Gurbanov, A.M. Maharramov, G.Z. Mammadova, V.G. Nenajdenko, F.I. Zubkov, K.T. Mahmudov, A.J. Pombeiro, Dyes and Pigments 150 (2018) 377.
5 A.M. Maharramov, N.Q. Shikhaliyev, G.T. Suleymanova, A.V. Gurbanov, G.V. Babayeva, G.Z. Mammadova, F.I. Zubkov, V.G. Nenajdenko, K.T. Mahmudov, A.J. Pombeiro, Dyes and Pigments 159 (2018) 135.
6 N.G. Shikhaliyev, A.M. Maharramov, G.T. Suleymanova, G.V. Babayeva, G.Z. Mammadova, I.M. Shikhaliyeva, A.A. Babazade, V.G. Nenajdenko, Organic Chemistry
7 N.G. Shikhaliyev, G.T. Suleymanova, A.A. İsrayilova, K.G. Ganbarov, G.V. Babayeva, K.A. Garazadeh, G.Z. Mammadova, V.G. Nenajdenko, Synthesis, characterization and antibacterial studies of dichlorodiazadienes. Organic Chemistry. 2019(part vi):64
8 V.G. Nenajdenko, A.M. Maharramov, N.G. Shikhaliyev, G.T. Suleymanova, A.V. Gurbanov, G.V. Babayeva, K.A. Garazadeh, N.E. Ahmedova, New Materials, Compounds and Applications 3(3) (2019) 135
9 G.T. Suleymanova, Dissertation, Baku (2021) 193 p.
10 M. Akkurt, N.G. Shikhaliyev, G.T. Suleymanova, G.V. Babayeva, G.Z. Mammadova, A.A. Niyazova, I.M. Shikhaliyeva & F.A.A. Toze, ActaCrystallographica Section E: Crystallographic Communications 75(8) (2019) 1199.
11 Z. Atioglu, M. Akkurt, U.F. Askerova, S.H. Mukhtarova, R.K. Askerov & S. Mlowe, ActaCrystallographicaSection E: Crystallographic Communications 77(9) (2021) 907.
12 Z. Atioglu, M. Akkurt, N.G. Shikhaliyev, U.F. Askerova, A.A. Niyazova & S. Mlowe, ActaCrystallographicaSection E: Crystallographic Communications 77(8) (2021) 829.
13 Z. Atioglu, M. Akkurt, N.G. Shikhaliyev, S.H. Mukhtarova, G.T. Suleymanova & F.A. Toze, ActaCrystallographicaSection E: Crystallographic Communications 76(7) (2020) 1033.
14 N.G. Shikhaliyev, Z. Atioglu, M. Akkurt, A.M. Qacar, R.K. Askerov & A. Bhattarai, ActaCrystallographicaSection E: CrystallographicCommunications, 77(9) (2021) 965.
15 N.G. Shikhaliyev, Z. Atioglu, M. Akkurt, N.E. Ahmadova, R.K. Askerov, A. Bhattarai, ActaCrystallographicaSection E: Crystallographic Communications 77(8) (2021) 814.
16 N.G. Shikhaliyev, K. Ozkaraca, M. Akkurt, X.N. Bagirova, G.T. Suleymanova, M.S. Abdulov & S. Mlowe, ActaCrystallographicaSection E: Crystallographic Communications 77(11) (2021) 1158.
17 N.G. Shikhaliyev, K.N. Bagirova, A.A. Niyazova, G.Z. Mammadova, J. Cisterna, A. Cárdenas & I. Brito, CrystallographyReports 65(7) (2020) 1169.
18 V.G. Nenajdenko, A.V. Shastin, V.M. Gorbachev, S.V. Shorunov, V.M. Muzalevskiy, A.I. Lukianova & V.N. Khrustalev, ACS Catalysis 7(1) (2017) 205.
19 N.G. Shikhaliyev, A.M. Maharramov, G.T. Suleymanova, A.A. Babazade, V.G. Nenajdenko, V.N. Khrustalev, A.S. Novikov, A.G. Tskhovrebov, Mendeleev Communications 31(5) (2021) 677.
20 A.A. Abdullayeva, G.T. Suleymanova, N.E. Ahmadova, C.Q. Ganbarova, G.V. Babayeva, N.V. Qurbanova, N.G. Shikhaliyev, A.M. Maharramov, Pedagogical University News 67(3) (2019) 58.
21 A.V. Shastin, B.D. Tsyrenova, P.G. Sergeev, V.A. Roznyatovsky, I.V. Smolyar, V.N. Khrustalev, V.G. Nenajdenko, Organic letters 20(24) (2018) 7803.
A.M. Maharramov, G.T. Suleymanova, A.M. Qajar, A.A. Niyazova, N.E. Ahmadova, I.M. Shikhaliyeva, Kh.A. Garazade, V.G. Nenajdenko, N.G.Shikaliyev, Synthesis of dichlorodiazadiene derivatives based on o- and m-nitrobenzoic aldehyde, UNEC J. Eng. Appl. Sci 2(1) (2022) 64-73
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P. M. Pihko (Ed.), Hydrogen Bonding in Organic Synthesis 2009.
A.M. Maharramov, K.T. Mahmudov, M.N. Kopylovich, A.J. Pombeiro, editors. Non-covalent interactions in the synthesis and design of new compounds (2016) 480p.
V.M. Muzalevsky, A.M. Maharramov, N.G. Shikaliyev, N.V. Gurbanova, S.J. Heydarova, E.S. Balenkova, A.V. Shastin, V.G. Nenajdenko, News of the Russian Academy of Sciences 3 (2013) 677.
N.G. Shikhaliyev, N.E. Ahmadova, A.V. Gurbanov, A.M. Maharramov, G.Z. Mammadova, V.G. Nenajdenko, F.I. Zubkov, K.T. Mahmudov, A.J. Pombeiro, Dyes and Pigments 150 (2018) 377.
A.M. Maharramov, N.Q. Shikhaliyev, G.T. Suleymanova, A.V. Gurbanov, G.V. Babayeva, G.Z. Mammadova, F.I. Zubkov, V.G. Nenajdenko, K.T. Mahmudov, A.J. Pombeiro, Dyes and Pigments 159 (2018) 135.
N.G. Shikhaliyev, A.M. Maharramov, G.T. Suleymanova, G.V. Babayeva, G.Z. Mammadova, I.M. Shikhaliyeva, A.A. Babazade, V.G. Nenajdenko, Organic Chemistry
N.G. Shikhaliyev, G.T. Suleymanova, A.A. İsrayilova, K.G. Ganbarov, G.V. Babayeva, K.A. Garazadeh, G.Z. Mammadova, V.G. Nenajdenko, Synthesis, characterization and antibacterial studies of dichlorodiazadienes. Organic Chemistry. 2019(part vi):64
V.G. Nenajdenko, A.M. Maharramov, N.G. Shikhaliyev, G.T. Suleymanova, A.V. Gurbanov, G.V. Babayeva, K.A. Garazadeh, N.E. Ahmedova, New Materials, Compounds and Applications 3(3) (2019) 135
G.T. Suleymanova, Dissertation, Baku (2021) 193 p.
M. Akkurt, N.G. Shikhaliyev, G.T. Suleymanova, G.V. Babayeva, G.Z. Mammadova, A.A. Niyazova, I.M. Shikhaliyeva & F.A.A. Toze, ActaCrystallographica Section E: Crystallographic Communications 75(8) (2019) 1199.
Z. Atioglu, M. Akkurt, U.F. Askerova, S.H. Mukhtarova, R.K. Askerov & S. Mlowe, ActaCrystallographicaSection E: Crystallographic Communications 77(9) (2021) 907.
Z. Atioglu, M. Akkurt, N.G. Shikhaliyev, U.F. Askerova, A.A. Niyazova & S. Mlowe, ActaCrystallographicaSection E: Crystallographic Communications 77(8) (2021) 829.
Z. Atioglu, M. Akkurt, N.G. Shikhaliyev, S.H. Mukhtarova, G.T. Suleymanova & F.A. Toze, ActaCrystallographicaSection E: Crystallographic Communications 76(7) (2020) 1033.
N.G. Shikhaliyev, Z. Atioglu, M. Akkurt, A.M. Qacar, R.K. Askerov & A. Bhattarai, ActaCrystallographicaSection E: CrystallographicCommunications, 77(9) (2021) 965.
N.G. Shikhaliyev, Z. Atioglu, M. Akkurt, N.E. Ahmadova, R.K. Askerov, A. Bhattarai, ActaCrystallographicaSection E: Crystallographic Communications 77(8) (2021) 814.
N.G. Shikhaliyev, K. Ozkaraca, M. Akkurt, X.N. Bagirova, G.T. Suleymanova, M.S. Abdulov & S. Mlowe, ActaCrystallographicaSection E: Crystallographic Communications 77(11) (2021) 1158.
N.G. Shikhaliyev, K.N. Bagirova, A.A. Niyazova, G.Z. Mammadova, J. Cisterna, A. Cárdenas & I. Brito, CrystallographyReports 65(7) (2020) 1169.
V.G. Nenajdenko, A.V. Shastin, V.M. Gorbachev, S.V. Shorunov, V.M. Muzalevskiy, A.I. Lukianova & V.N. Khrustalev, ACS Catalysis 7(1) (2017) 205.
N.G. Shikhaliyev, A.M. Maharramov, G.T. Suleymanova, A.A. Babazade, V.G. Nenajdenko, V.N. Khrustalev, A.S. Novikov, A.G. Tskhovrebov, Mendeleev Communications 31(5) (2021) 677.
A.A. Abdullayeva, G.T. Suleymanova, N.E. Ahmadova, C.Q. Ganbarova, G.V. Babayeva, N.V. Qurbanova, N.G. Shikhaliyev, A.M. Maharramov, Pedagogical University News 67(3) (2019) 58.
A.V. Shastin, B.D. Tsyrenova, P.G. Sergeev, V.A. Roznyatovsky, I.V. Smolyar, V.N. Khrustalev, V.G. Nenajdenko, Organic letters 20(24) (2018) 7803.
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