Journal of Chemical Crystallography最新文献

{"title":"Synthesis, Structural Elucidation and\u0000 DNA-Binding Studies of Centrosymmetric Paddlewheel Copper Carboxylate\u0000 Complexes","authors":"Afifa Mushtaq,&nbsp;Muhammad Iqbal,&nbsp;Zahid Rashid,&nbsp;Khadija Shahid,&nbsp;Muhammad Nawaz Tahir,&nbsp;Saqib Ali","doi":"10.1007/s10870-024-01018-1","DOIUrl":"10.1007/s10870-024-01018-1","url":null,"abstract":"<div><p>Synthesis, characterization and structural relevance of four new copper\u0000 carboxylate complexes (<b>1</b>–<b>4</b>) has been presented here. The complexes have been\u0000 synthesized by direct treatment of the substituted phenyl acetate and pyridine\u0000 ligands in aqueous medium. The complexes were stable indefinitely with excellent\u0000 yields and were characterized using spectroscopic and single crystal XRD techniques.\u0000 FTIR spectroscopy revealed the bridging bidentate coordination mode for the\u0000 carboxylate moiety in accordance to the actual structure revealed by XRD. Moreover,\u0000 UV-Visible spectroscopic and cyclic voltammetric studies helped in their\u0000 characterization and yielded signals which were typical of the copper(II) complexes.\u0000 Successfully solved single crystal XRD data showed binuclear paddlewheel structures\u0000 for all the complexes with both copper ions linked through four OCO bridges of\u0000 ortho-methoxy phenyl acetate (<b>1</b>–<b>3</b>) and ortho-methyl-meta-nitrophenyl acetate (<b>4</b>). The geometry around each copper was distorted square\u0000 pyramidal where the apical positions are occupied by meta-bromopyridine (<b>1</b>), meta-methylpyridine (<b>2</b>) and DMSO (<b>3</b> and <b>4</b>) molecules. The complexes exhibited excellent\u0000 DNA-binding activity majorly via intercalation as revealed by four experimental\u0000 techniques. This preliminary study showed that the synthesized complexes add to the\u0000 existing treasury on the paddlewheel complexes.</p><h3>The Index Abstract</h3><p>Air stable newly synthesized and purified crystalline complexes\u0000 with their preliminary structural relevance.</p>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"261 - 273"},"PeriodicalIF":0.4,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141169699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystal Structure of 2-(Ethoxymethylene)Malononitrile, Hirshfeld Surface Analysis and DFT Evaluation of the Non-covalent Interactions Energy","authors":"Vyacheslav S. Grinev,&nbsp;Ilya A. Demeshko,&nbsp;Anna E. Sklyar,&nbsp;Maksim V. Dmitriev,&nbsp;Alevtina Yu. Yegorova","doi":"10.1007/s10870-024-01019-0","DOIUrl":"10.1007/s10870-024-01019-0","url":null,"abstract":"<div><p>The presented study describe the crystal structure of 2-(Ethoxymethylene)malononitrile (<b>1</b>), C₆H₆N₂O, in the monoclinic space group <i>P</i>2₁/<i>m</i> with <i>Z</i> = 2, <i>a</i> = 6.798(3), <i>b</i> = 6.172(3), <i>c</i> = 8.844(5) Å. The unit cell of a single crystal of <b>1</b> contains two antiparallel oriented molecules. Ethyl fragment demonstrates a disorder with equal occupancy values of 0.5 and a total site-occupation factor (s.o.f.) of 1.0. The molecules of <b>1</b> are linked into infinite chains of co-oriented molecules parallel to the <i>a</i> axis via N-H···N ≡ C close contacts with the distance of 2.494(3) Å. There are also weak hydrogen bonds &gt; O···H- between the oxygen atom and the ethyl moiety. The estimation of the energy of non-covalent interactions was conducted by DFT method with different functionals. The best reproducibility of the geometric parameters of those interactions was obtained by using M06-2X functional. The estimated energy value was found to be − 1.20 kcal/mol.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"253 - 260"},"PeriodicalIF":0.4,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141061954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interplay Between Conformation and Hydrogen Bond Pattern: Crystal Structure of N-(2,2-dichloroacetyl)-N',N\"-dipropylphosphoric Triamide and a Database Survey","authors":"Narjess Peyman,&nbsp;Mehrdad Pourayoubi,&nbsp;Ehteram Mohammadi Gooshki,&nbsp;Marek Nečas","doi":"10.1007/s10870-024-01015-4","DOIUrl":"10.1007/s10870-024-01015-4","url":null,"abstract":"<div><p>The interplay between conformation and hydrogen bond pattern was studied in 211 (C(O)NH)(N)₂P(O)-based phosphoric triamides retrieved from the Cambridge Structural Database (CSD) and one new molecular structure, (CHCl₂C(O)NH)(CH₃CH₂CH₂NH)₂P(O). The O═C–N–P and C–N–P═O torsion angles were extracted for the conformational study of the C(O)NP(O) segment, and the conformations of ±<i>sp</i>±<i>ap</i>, ±<i>sp</i>±<i>sc</i> and ±<i>ap</i>±<i>sp</i> were found (<i>sp</i> = synperiplanar, <i>ap</i> = antiperiplanar, <i>sc</i> = synclinal). The conformations of hydrogen bond donor group(s) with respect to the acceptor group(s) were also considered. The investigated structures belong to three classes of (RC(O)NH)(R¹R²N)₂P(O) (R¹ and R² ≠ H), (RC(O)NH)(R¹NH)₂P(O) (R¹ ≠ H) and heterocyclic (RC(O)NH)P(O)[NR¹]₂R² phosphoric triamides (R¹ = H or ≠ H, R² = a hydrocarbon fragment), and the hydrogen bond patterns include dimer, tetramer, chain, tape, ladder, two-dimensional assembly and three-dimensional architecture. In the new structure, the conformation of the C(O)NP(O) fragment is <i>–sp+ap</i>, and molecules are assembled in a tape arrangement (parallel to the [110] axis) through N_CP–H···O═P and N_P–H···O═C hydrogen bonds (N_CP is the nitrogen atom of the C(O)NHP(O) fragment and N_P is the other N atom bonded to phosphorus).</p><h3>Graphical Abstract</h3><p>The interplay between conformation and hydrogen bond pattern was studied in 211 (C(O)NH)(N)₂P(O)-based phosphoric triamides retrieved from the Cambridge Structural Database (CSD) and one new structure, (CHCl₂C(O)NH)(CH₃CH₂CH₂NH)₂P(O).</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"242 - 252"},"PeriodicalIF":0.4,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140974106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, Crystal Structure and Circular Dichroism Property of a Homochiral Ni-MOF Based on D-Camphorate-Derived Enantiopure Ligand","authors":"Mengying Liu,&nbsp;Mingyuan Lei,&nbsp;Yang Shi,&nbsp;Qingfu Zhang","doi":"10.1007/s10870-024-01017-2","DOIUrl":"10.1007/s10870-024-01017-2","url":null,"abstract":"<div><p>A homochiral metal-organic framework, [Ni(D-L)(py)₂(H₂O)₂]_n (<b>1</b>) [D-H₂L = 4,4′-[[(1<i>R</i>,3<i>S</i>)-1,2,2-trimethylcyclopentane-1,3-dicarbonyl]bis-(azanediyl)]dibenzoic acid], has been successfully synthesized based on D-camphorate-derived enantiopure ligand. <b>1</b> was characterized by single-crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD), Fourier transform infrared spectral analysis (FTIR), thermogravimetric analysis (TGA) and the circular dichroism (CD) spectrum. The experimental results show that <b>1</b> features a homochiral triple helix and is formed a 3D supramolecular framework by supramolecular interactions. In addition, the circular dichroism (CD) spectrum verifies the chirality introduction from the ligand to crystal. The successful preparation of the homochiral Ni-MOF provides more possibilities of employing the chiral ligand to produce various chiral MOFs.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>A homochiral Ni(II)-MOF <b>1</b> was prepared by using D-camphorate-derived enantiopure ligand under solvothermal condition, in which the chirality of <b>1</b> was confirmed by the circular dichroism (CD) spectrum</p></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"234 - 241"},"PeriodicalIF":0.4,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, Crystal Structure, Hirshfeld Surface and Computational Analysis of Bis-[2-(3,4-dihydroxyphenyl)-4,5-diphenyl-1H-imidazol-3-ium] Oxalate Ethanol Solvate","authors":"Peter Solo,&nbsp;M. Arockia doss","doi":"10.1007/s10870-024-01016-3","DOIUrl":"10.1007/s10870-024-01016-3","url":null,"abstract":"<div><p>Bis-[2-(3,4-dihydroxyphenyl)-4,5-diphenyl-1H-imidazol-3-ium] Oxalate ethanol solvate crystal has been isolated from slow solvent evaporation method and the structure was characterized by FT-IR, NMR and Single crystal XRD. The compound crystallizes in the triclinic space group P <span>(overline{1 })</span> with a = 7.7925(16), b = 10.716(3), c = 13.952(3), α = 106.545(5), β = 97.514(5), γ = 110.152(5), V = 1014.0(4) Å3 and Z = 1. The single crystal X-ray data of the compound confirms two proton transfers from an oxalic acid to the pyrimidine-type-nitrogen of two separate imidazole rings. The structure and symmetry of the Imidazolium Oxalate is dictated by N–H⋯O and O–H⋯O hydrogen bonding interactions and are confirmed by hydrogen bonding analysis and hirshfeld surface analysis. The partial double bond character in the imidazolium ring confirms delocalization across the molecular framework. The partial double bond character of the C–O bonds also confirms delocalization in the oxalate anion. The crystal is 3-dimensional structure, with crystal growth in all the crystallographic axis. Computational analysis [DFT, B3LYP/6-311G(d,p)] reveals close correlation of the constrained optimized structure with the experimental data.</p><h3>Graphical Abstract</h3><p>Imidazolium oxalate crystal form by the protonation of Imidazole compound and complex formation with oxalate ion.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"225 - 233"},"PeriodicalIF":0.4,"publicationDate":"2024-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three 3D Supramolecular Organic Salts Assembled from Melamine and Aliphatic Carboxylic Acids: Preparation, Crystallographic Characterization, and Hirshfeld Surface Analysis","authors":"Zhaozhi Li,&nbsp;Xuele Lin,&nbsp;Xingjun Gao,&nbsp;Shouwen Jin,&nbsp;Xusen Gong,&nbsp;Daqi Wang","doi":"10.1007/s10870-024-01014-5","DOIUrl":"10.1007/s10870-024-01014-5","url":null,"abstract":"<div><p>Three crystalline organic salts (melamine)₂: (itaconic acid): 3H₂O [(Hmem)₂²⁺·(itca²⁻)·(H₂O)₃, itca²⁻ = itaconate] <b>(1)</b>, (melamine)₂:(2-bromo-but-2-enedioic acid):DMF:2H₂O [(Hmem⁺)₂·(bbda²⁻)·DMF·(H₂O)₂, bbda²⁻ = 2-bromo-but-2-enedioate] <b>(2)</b> and (melamine):(α-ketoglutaric acid) [(Hmem⁺)·(Hketglua⁻), Hketglua⁻ = hydrogen α-ketoglutarate] <b>(3)</b> were featured by X-ray diffraction analysis, IR, mp, and elemental analysis. Significant non-covalent interactions were calculated by means of the Hirshfeld surface analysis. All salts involve extensive N–H···OH-bonds as well as other non-covalent associations. The melamine polymers/dimers were set up at <b>1</b>–<b>2</b>/<b>3</b> by the pair of complmentary N–H···NH-bonds. The role of these non-covalent interactions in the crystal packing is ascertained. These weak interactions combined, all salts exhibited 3D framework motifs.</p><h3>Graphical Abstract</h3><p>The crystal structures of the salts from melamine, itaconic acid, 2-bromo-but-2-enedioic acid and α-ketoglutaric acid are predominantly stabilized by the classical hydrogen bonds as well as CH2···O, CH3···O, Br···Br, C···C, O···C, and π···π interactions.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"209 - 224"},"PeriodicalIF":0.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Origins of the Anisotropic Thermal Expansion of BINOL Crystals","authors":"Paul G. Waddell","doi":"10.1007/s10870-024-01013-6","DOIUrl":"10.1007/s10870-024-01013-6","url":null,"abstract":"<div><p>Measurement of the unit cell of (R)-BINOL over a 200° temperature range (300–100 K) reveals an anisotropic contraction where the c-axis contracts <i>ca.</i> 2.3% compared to a <i>ca.</i> 0.45% contraction of the a and b axes, a <i>ca.</i> six-fold difference in linear thermal expansion coefficient. This contraction corresponds to a decrease in the helical pitch of the 3₁ screw axis in the [001] direction. The anisotropic nature of the contraction is rationalised by a thorough analysis of intermolecular contacts within the crystal and their impact on the conformation of the molecule and crystal packing.</p><h3>Graphical Abstract</h3><p>The crystal structure of (R)-BINOL exhibits a pronounced anisotropic thermal expansion.</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"203 - 208"},"PeriodicalIF":0.4,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10870-024-01013-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Crystal Structure of a Chelating N-Heterocyclic Carbene Palladium Complex Containing N-(3-Bromopropyl)-N’-thioether di-functionalized Imidazol-2-ylidene","authors":"Yongmei Xiao,&nbsp;Yaowen Liu,&nbsp;Liangru Yang,&nbsp;Yingjun Wang,&nbsp;Jinwei Yuan,&nbsp;Lingbo Qu","doi":"10.1007/s10870-024-01012-7","DOIUrl":"10.1007/s10870-024-01012-7","url":null,"abstract":"<div><p>A chelating <i>N</i>-heterocyclic carbene palladium complex (<b>3</b>) containing <i>N</i>-(3-bromopropyl)-<i>N’</i>-thioether di-functionalized imidazol-2-ylidene was synthesized by the direct metalation of <i>N</i>-(3-bromopropyl)-<i>N’</i>-thioether di-functionalized imidazolium bromide (<b>2</b>) with Pd(OAc)₂ in the presence of NaOAc and NaBr at room temperature using CH₂Cl₂ as solvent. The structure was characterized by NMR, HR-MS and X-ray crystallography. The results showed that complex <b>3</b> consists of two independent molecules with configuration of <i>S</i>_C, <i>R</i>_S in molecule a, and <i>S</i>_C, S_S in molecule b, respectively. The crystal is triclinic, P1 space group, with a = 8.4815(3), b = 8.6338(3), c = 19.2371(7) Å, V = 1245.66(8) ų, and Z = 2 (at 293(2)K).</p><h3>Graphical Abstract</h3><p>A chelating <i>N</i>-heterocyclic carbene palladium complex (<b>3</b>) consists of two independent molecules with configurations of <i>S</i>_C, <i>R</i>_S and <i>S</i>_C, S_S respectively has been synthesized through the direct metalation of the precursor imidazolium bromide (<b>2</b>).</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 3","pages":"197 - 202"},"PeriodicalIF":0.4,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140569214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, Crystal Structure, Spectral (IR, NMR), and Computational Analysis of 2,4-Dibromo-6-(1H-Phenanthro[9,10-d]Imidazol-2-yl)Phenol as Charge-Transport System","authors":"Peter Solo,&nbsp;M. Arockia Doss","doi":"10.1007/s10870-024-01011-8","DOIUrl":"10.1007/s10870-024-01011-8","url":null,"abstract":"<div><p>A novel 2,4-dibromo-6-(1H-phenanthro[9,10-d]imidazol-2-yl)phenol crystal has been reported and characterized by FT-IR, ¹H NMR, ¹³C NMR. Single crystal XRD studies reveals that the compound crystalizes into triclinic crystal system with P-1 space group, and crystallographic data has been deposited in the Cambridge crystallographic data center with CCDC Number: 2246180. Various computational analysis like, Hydrogen bond analysis, Molecular electrostatic potential analysis, Natural population analysis, hirshfeld surface, and Frontier molecular orbital analysis were performed to elucidate the structure of the crystal. Marcus-Hus semiclassical model for charge transfer in organic materials is applied for the calculation of charge transfer rate. The calculation of reorganization energy and coupling constant reveals that the compound could be investigated as hole transport material.</p><h3>Graphical Abstract</h3><p>Synthesis, characterization, and computational analysis of Imidazole-based Organic crystals as charge transport material.</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 2","pages":"183 - 196"},"PeriodicalIF":0.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular and Crystal Structure of N-(8-benzylidene-4-phenylhexahydroquinazolin-2(1H)-ylidene)Cyanamide","authors":"Anna E. Sklyar,&nbsp;Vyacheslav S. Grinev,&nbsp;Maksim V. Dmitriev,&nbsp;Natalia O. Vasilkova,&nbsp;Daniil A. Puzanov,&nbsp;Adel P. Krivenko","doi":"10.1007/s10870-024-01010-9","DOIUrl":"10.1007/s10870-024-01010-9","url":null,"abstract":"<div><p>We have obtained previously known and new 4,8-C-substituted hexahydroquinazolincyanamides by two-component condensation of 2,6-diaryl(heteroaryl)methylidenecyclohexanones with the same or different terminal substituents with <i>N</i>-cyanoguanidine according to a modified procedure under conditions of basic catalysis. We have grown a singlecrystal of one of the representatives of the series –<i>N</i>-(8-benzylidene-4-phenylhexahydroquinazolin-2(1<i>H</i>)-ylidene)cyanamideby crystallization from a saturated solution of acetonitrile and carried out its X-ray diffraction study. The structure of <i>N</i>-(8-benzylidene-4-phenylhexahydroquinazolin-2(1<i>H</i>)-ylidene)cyanamide, C₂₂H₂₀N₄, has orthorhombic (<i>P</i>2₁2₁2₁) symmetry. The molecule is built from fused non-planar cyclohexene and tetrahydropyrimidine rings. The cyclohexene ring is in the half-chair conformation, while the tetrahydropyrimidine ring adopts the ‘C-envelope’ conformation. The crystal packing of the compound is an alternating layered structure. The mutual arrangement of molecules promotes the formation of intermolecular hydrogen bonds (IMH) between the H1 hydrogen atoms of the quinazoline ring and the N4 nitrogen atoms of the nitrile group. Non-planar C–H···π interactions are observed in the crystal as well. The compound is in the <i>E,E</i>-configuration. The calculation and analysis of Hirschfeld surfaces demonstrated the presence of hydrogen bonds, different in energy, and C–H···π interactions between benzene rings and protons of other benzene rings of neighbouring molecules in both the benzylidene and phenyl substituents.</p><h3>Graphical Abstract</h3><p>X-ray diffraction analysis of hexahydroquinazolincyanamide showed that there are intermolecular hydrogen bonds with the hydrogen atoms of the quinazoline ring and the nitrogen atoms of the nitrile and imine groups. An assessment of the intermolecular stacking interaction is given.</p>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":615,"journal":{"name":"Journal of Chemical Crystallography","volume":"54 2","pages":"173 - 182"},"PeriodicalIF":0.4,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}