Abstract
C16H18ClNO, monoclinic, C2/c, a = 18.6281(16) Å, b = 6.1621(4) Å, c = 27.621(3) Å, β = 108.167(2)°, V = 3012.6(5) Å3, Z = 8, Rgt(F) = 0.0491, wRref(F2) = 0.1168, T = 296.15 K.
The molecular structure is shown in the figure. Table 1 contains the crystallographic data and the list of the atoms including atomic coordinates and displacement parameters can be found in the cif-file attached to this article.

Data collection and handling.
| Crystal: | Colourless block |
| Size: | 0.50 × 0.40 × 0.30 mm |
| Wavelength: | MoKα radiation (0.71073 Å) |
| μ: | 0.25 mm−1 |
| Diffractometer, scan mode: | Bruker APEX-II, φ and ω scans |
| θmax, completeness: | 25.1°, 99 % |
| N(hkl)measured, N(hkl)unique, Rint: | 16546, 2667, 0.048 |
| Criterion for Iobs, N(hkl)gt: | Iobs > 2 σ(Iobs), 1727 |
| N(param)refined: | 175 |
| Programs: | Bruker, 1 Olex2, 2 SHELX 3 , 4 |
1 Source of material
Carvacrol (300.4 mg, 2.00 mmol), 2-chloro-5-(chloromethyl)pyridine (486.0 mg, 3.00 mmol) and 10.0 mL of N,N-dimethylformamide were added into a 50 mL three-necked flask, and the reaction was stirred at room temperature. After the completion of the reaction was monitored by TLC (petroleum ether:ethyl acetate = 10:1), the reaction mixture was poured into 100 mL of water. The aqueous layer was extracted with 10 mL of ethyl acetate for three times, and the organic layers were combined, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure to remove the solvent. The obtained substance was separated by column chromatography, and then naturally volatilized in a mixed solvent (petroleum ether:ethyl acetate = 10:1) at room temperature. Colorless block crystals of the title compound were obtained after three days.
2 Experimental details
Hydrogen atoms were added using riding models. Their Uiso values were set to 1.2Ueq of the parent atoms. The structure was solved with the ShelXT 3 structure solution program and refined with the ShelXL. 4
3 Comment
Monoterpenes are natural products containing 10 carbon atoms, which are polymerized from two isoprene units and exhibit a wide range of biological activities, such as antioxidant, 5 antibacterial 6 and insecticidal 7 activities. To further enhance the insecticidal activity of carvacrol, our group designed and synthesized a series of compounds using an active splicing strategy, among which the title compound represents one.
The crystal structure of the title compound crystallizes in the monoclinic system with the space group C2/c. In the asymmetric unit, there is one complete 2-chloro-5-((5-isopropyl-2-methylphenoxy)methyl)pyridine molecule. The molecular structure features a monoterpene carvacrol moiety linked to a chloropyridinemethyl moiety via an oxygen bridge. The carvacrol framework is characterized by its aromatic ring (C4–C5–C6–C7–C8–C9) with bond lengths of C4–C5 [1.375(3) Å], C5–C6 [1.378(3) Å], C6–C7 [1.379(3) Å], C7–C8 [1.390(3) Å], and C8–C9 [1.383(3) Å]. These bond lengths are comparable to the corresponding bond lengths of the reported carvacrol molecule. 8 , 9 The phenolic oxygen (O1) in carvacrol forms a covalent bond with C8 [O1–C8 = 1.376(2) Å] and bridges to C11 [O1–C11 = 1.424(3) Å]; the bond angle C8–O1–C11 [118.39(17)°] indicates a bent configuration typical of ether linkages. In the reported analogous structure, the corresponding bond lengths and bond angle are 1.375(3) Å, 1.413(4) Å and 119.0(2)°, respectively. 10 The carvacrol moiety is connected via O1–C11 to the chloropyridinemethyl moiety, which constitutes the second aromatic system. This segment includes a pyridine ring (C12–C13–C14–C15–N1–C16) where C12 is linked to C11 [1.494(3) Å]. A chlorine atom is substituted at C15 [Cl1–C15 = 1.744(2) Å], contributing to the molecular polarity. All bond distances are within the normal range. Intermolecular stabilization is provided by an unconventional very weak hydrogen bond between the aromatic C13–H13 and the nitrogen atom N1 of an adjacent molecule [d(C⋯N) = 3.411(3) Å, ∠C–H⋯N = 173.8°].
Funding source: General Program of Guizhou Provincial Basic Research Program (Natural Science)
Award Identifier / Grant number: Qianjiaohe Jichu MS[2025]072
Funding source: Anshun “Two Cities and Three Bases” Youth Science and Technology Talents Training Program
Award Identifier / Grant number: Anshi Ke Ren [2024]4
Funding source: Innovation and Entrepreneurship Training Program for College Students of Anshun University
Award Identifier / Grant number: S2025106671327
-
Research funding: This work was financially supported by General Program of Guizhou Provincial Basic Research Program (Natural Science) (Qianjiaohe Jichu MS[2025]072), Anshun “Two Cities and Three Bases” Youth Science and Technology Talents Training Program (Anshi Ke Ren [2024]4), Innovation and Entrepreneurship Training Program for College Students of Anshun University (S2025106671327).
References
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© 2025 the author(s), published by De Gruyter, Berlin/Boston
This work is licensed under the Creative Commons Attribution 4.0 International License.
Artikel in diesem Heft
- Frontmatter
- New Crystal Structures
- The crystal structure of (1Z, 2Z)-3-phenyl-2-propenal 2-(4-bromo-2-fluorophenyl)hydrazone, C15H12BrFN2
- Refinement of crystal structure of 2-(2,3-dihydro-3-oxo-1 H -inden-1-ylidene)-1 H -indene-1,3(2 H )-dione C18H10O3
- The crystal structure of 3-(1-fluoro-2-(naphthalen-2-yl)-2-oxoethyl)-2-methoxy-3,4-dihydroisoquinolin-1(2H)-one, C22H18FNO3
- Crystal structure of the dinuclear copper(II) complex bis(μ2-2,2′ -{[1,3-phenylenebis-(methylene)]bis(oxy)}dibenzoaot-κ4O,O′:O′′,O′′′)-bis(dimethylformamide-κ1O)dicopper(II), C50H44Cu2N2O14
- Crystal structure of poly[triaqua-(μ9-biphenyl-3,3′,5,5′-tetracarboxylic-κ8 O,O:O,O′: O,O″:O,O‴)samarium(III)sodium(I)], C16H12NaSmO11
- The crystal structure of 5-benzyl-1-(4-fluorobenzyl)-4-((4-fluorobenzyl)oxy)-1,5-dihydro-2H-pyrrol-2-one, C25H21F2NO2
- The crystal structure of diammonium 2,5-dihydroxyterephthalate, C8H12N2O6
- Crystal structure of (E)-4-(4-(1H-1,2,4-triazol-1-yl)benzylidene)-6,8-dimethoxy-3,4-dihydrobenzo[b]oxepin-5(2H)-one, C21H19N3O4
- Crystal structure of poly[oktakis(μ2-oxido-κ2O:O)-tetrakis(oxido-κ1O)-bis(μ2-1,1′-[1,4-phenylenebis(methylene)]di(1H-imidazole-κ2N:N′))-tetravanadium(V)-dizinc(II)] monohydrate, C28H30Zn2N8O13V4
- Crystal structure of acotiamide hydrochloride dimethylacetamide solvate (1/1), C25H40ClN5O6S
- Crystal structure of catena-poly[monoaqua (u2-(3-(3,5-dicarboxyphenyl)pyridine-2,6-dicarboxylic-k4O:O′:O″:N)zinc(II))] monohydrate, C15H11NO10Zn
- Crystal structure of dichlorido{2,6-bis(3,5-diisopropyl-N-pyrazolyl)pyridine}zinc(II), C23H33Cl2N5Zn
- Crystal structure of nitrato-κ2O,O′-[hydridotris(3,5-diethylpyrazol-1-yl)borato-κ3N,N′,N″]copper(II), C21H34BCuN7O3
- Crystal structure of 2,7-bis(3,5-diethyl-1H-pyrazol-4-yl)-benzo[lmn][3,8]phenanthroline-1,3,6,8(2H,7H)-tetrone, C28H26N6O4
- Crystal structure of 2-(4-chlorophenyl)benzothiazole, C13H8ClNS
- Synthesis and crystal structure (3R,4′S)-4′-(3,5-dibromophenyl)-1′-methyl-2H-dispiro [benzofuran-3,3′-pyrrolidine-2′,2″-indene]-1″,2,3″-trione, C26H17Br2NO4
- Crystal structure of bis(((3a,7a-dihydro-1H-benzo[d][1,2,3]triazol-1-yl)methyl) triphenylphosphonium) tetrachloridomanganate(II), C50H42Cl4MnN6P2
- The crystal structure of 4,9-bis(4-chlorophenyl)-1,6-bis(2-cyanobenzyl)-2,4a,5,6,7,7a-hexahydro-1H-2,7,5-(epiprop[2]ene[1,1,3]triyl)pyrrolo[3,4-b]pyridine-3,10-dicarbonitrile, C40H26Cl2N6
- The crystal structure of poly((μ2-3-(3-nitro-4-carboxylphenyl)benzoate-κ3O, O′:O″)-μ2-1,4-bis(1-imidazolyl)benzene-κ2N:N′-cadmium(II)), C26H17N5O6Cd
- The crystal structure of 6-hydroxy-5H-pyrrolo[3,4-b]pyridine-5,7(6H)-dione monohydrate, C7H6N2O4
- Crystal structure of 4-((cyclohexylsulfonyl)methyl)-1,2,3,4-tetrahydrobenzo [4,5]imidazo[1,2-a]pyridine, C18H24N2O2S
- Crystal structure of 4,7-diphenyl-1,10-phenanthroline-κ2N,N′)-bis(2,4-di(fluorine)-1-phenylpyridine-κ2C,N)-iridium(III) hexafluorophosphate–dichloromethane (1/1), C47H30Cl2F10IrN4P
- Crystal structure of (4-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)boronic acid, C19H15BN2O2
- The crystal structure of (E)-(2-((pyridin-2-ylmethylene)amino)phenyl)arsonic acid, C12H11AsN2O3
- The crystal structure of N(benzyl(phenyl)carbomothioyl)benzamide, C21H18N2OS
- The crystal structure of bis(2-picolinium) hexachlorostannate dichloromethane monosolvate, C13H18Cl8N2Sn
- Crystal structure of poly[tetraaqua-bis(μ4-3–1-(carboxylatomethyl)-1H-1,2,4-triazole-3-carboxylato)-κ4O:O′,O″,N)zinc(II)], C5H7N3O6Zn
- The crystal structure of the co-crystal isonicotinamide – 2-(nitrophenyl)methanol (1/1), C6H6N2O·C7H7NO3
- The crystal structure of 4-(3-carboxy-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinolin-7-yl)piperazin-1-ium 2-fluorobenzoate hydrate, C23H25F2N3O6
- Crystal structure of [diaqua-{1H-benzo[d]imidazol-3-ium-5,6-dicarboxylato-κ2O,O′}magnesium(II)] C18H14MgN4O10
- Crystal structure of (3-(dimethoxymethyl)-5-methoxy-1H-indol-1-yl) (2-iodo-5-methoxyphenyl)methanone, C20H20INO5
- The crystal structure of 3,7,11-trimethylbenzo[5,6][1,4]thiazino[2,3,4-kl]phenothiazine 5,5,9,9-tetraoxide, C21H17NO4S2
- Crystal structure of tris(piperazine-1,4-diium)bis(2-hydroxy-1,2,3-propane-tricarboxylate) pentahydrate, C24H56N6O19
- Crystal structure of 2-chloro-5-((5-isopropyl-2-methylphenoxy)methyl)pyridine, C16H18ClNO
- Crystal structure of (E)-4-(4-(1H-pyrrol-1-yl)benzylidene)-6,8-dimethoxy-3,4-dihydrobenzo[(b)]oxepin-5(2H)-one, C23H21NO4
- Crystal structure of (E)-N′-(3,4-dichlorobenzylidene)-3,4,5-trimethoxybenzohydrazide, C17H16Cl2N2O4
- The crystal structure of 2-(2-hydroxyphenyl)-3-(pyridin-2-yl)-2,3- dihydroquinazolin-4(1H)-one, C19H15N3O2
- Crystal structure of 5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-8-methylchroman-4-one, C17H16O5
- Crystal structure of bis[(3,4-dimethoxybenzyl)triphenylphosphonium]di-μ2-bromido-dibromidodicopper(I)
- Crystal structure of bis [(1,3-dioxolan-2-ylmethyl)triphenylphosphonium] tetrabromidodicopper(I), C22H22Br2CuO2P
- Crystal structure of [1-(4-carboxyphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid], C12H8N2O5
- The crystal structure of one-dimensional cooridnation polymer bis(thiocyanato)-bis((1E,2E)-1,2-bis(1-(pyridin-3-yl)ethylidene)-hydrazine κ2N:N)iron(II), (C30H28N10S2Fe)n
- Crystal structure of ((4-acetamidophenyl)sulfonyl)-l-alanine, C11H14N2O5S
- Crystal structure of [(1-naphthalen-1-yl-methyl)triphenylphosphonium] dichloridocopper(I), [C29H24P]+[CuCl2]−
- RbTm3S5: the first rubidium lanthanoid(III) sulfide with CsEr3Se5-type crystal structure
- Crystal structure of 2,2′-((ethane-1,2-diylbis(methylammoniumdiyl))bis(methylene))bis(pyridin-1-ium) diiodido-tris(μ2-iodido-κ2I:I)dicopper(II) chloride dihydrate, C16H30Cu2I6N4O2
- The crystal structure of 4-(trifluoromethyl)pyridine-2-carboxylic acid, C7H4F3NO2
- The crystal structure of (E)-2-ethoxy-1-methoxy-4-(2-(methylsulfonyl)vinyl)benzene, C12H16O4S
- Crystal structure of potassium 1H,1H,2H,2H-perfluorooctanesulfonate, C8H4O3F13SK
- Crystal structure of 4-(4-(quinolin-8-yloxy)-1,2,5-thiadiazol-3-yl)morpholine, C15H14O2N4S
- The crystal structure of 1,4-bis(bromomethyl)-2,5-dimethylbenzene, C10H12Br2
- The crystal structure of imidazo[4,5-e][1,3]diazepine-4,6,8-triamine methanol solvate, C7H11N7O
- The crystal structure of chlorido-bis(1,10-phenantroline-κ2N,N′)-(2-formylphenoxyacetato-κ2O,O) lead(II), C33H23N4O4ClPb
- Crystal structure of pyridinium tetrakis(1,1,1-trifluoro-2,4-pentadionato-κ2O,O′)yttrium(III) C20F12H16YO8C5H6N
Artikel in diesem Heft
- Frontmatter
- New Crystal Structures
- The crystal structure of (1Z, 2Z)-3-phenyl-2-propenal 2-(4-bromo-2-fluorophenyl)hydrazone, C15H12BrFN2
- Refinement of crystal structure of 2-(2,3-dihydro-3-oxo-1 H -inden-1-ylidene)-1 H -indene-1,3(2 H )-dione C18H10O3
- The crystal structure of 3-(1-fluoro-2-(naphthalen-2-yl)-2-oxoethyl)-2-methoxy-3,4-dihydroisoquinolin-1(2H)-one, C22H18FNO3
- Crystal structure of the dinuclear copper(II) complex bis(μ2-2,2′ -{[1,3-phenylenebis-(methylene)]bis(oxy)}dibenzoaot-κ4O,O′:O′′,O′′′)-bis(dimethylformamide-κ1O)dicopper(II), C50H44Cu2N2O14
- Crystal structure of poly[triaqua-(μ9-biphenyl-3,3′,5,5′-tetracarboxylic-κ8 O,O:O,O′: O,O″:O,O‴)samarium(III)sodium(I)], C16H12NaSmO11
- The crystal structure of 5-benzyl-1-(4-fluorobenzyl)-4-((4-fluorobenzyl)oxy)-1,5-dihydro-2H-pyrrol-2-one, C25H21F2NO2
- The crystal structure of diammonium 2,5-dihydroxyterephthalate, C8H12N2O6
- Crystal structure of (E)-4-(4-(1H-1,2,4-triazol-1-yl)benzylidene)-6,8-dimethoxy-3,4-dihydrobenzo[b]oxepin-5(2H)-one, C21H19N3O4
- Crystal structure of poly[oktakis(μ2-oxido-κ2O:O)-tetrakis(oxido-κ1O)-bis(μ2-1,1′-[1,4-phenylenebis(methylene)]di(1H-imidazole-κ2N:N′))-tetravanadium(V)-dizinc(II)] monohydrate, C28H30Zn2N8O13V4
- Crystal structure of acotiamide hydrochloride dimethylacetamide solvate (1/1), C25H40ClN5O6S
- Crystal structure of catena-poly[monoaqua (u2-(3-(3,5-dicarboxyphenyl)pyridine-2,6-dicarboxylic-k4O:O′:O″:N)zinc(II))] monohydrate, C15H11NO10Zn
- Crystal structure of dichlorido{2,6-bis(3,5-diisopropyl-N-pyrazolyl)pyridine}zinc(II), C23H33Cl2N5Zn
- Crystal structure of nitrato-κ2O,O′-[hydridotris(3,5-diethylpyrazol-1-yl)borato-κ3N,N′,N″]copper(II), C21H34BCuN7O3
- Crystal structure of 2,7-bis(3,5-diethyl-1H-pyrazol-4-yl)-benzo[lmn][3,8]phenanthroline-1,3,6,8(2H,7H)-tetrone, C28H26N6O4
- Crystal structure of 2-(4-chlorophenyl)benzothiazole, C13H8ClNS
- Synthesis and crystal structure (3R,4′S)-4′-(3,5-dibromophenyl)-1′-methyl-2H-dispiro [benzofuran-3,3′-pyrrolidine-2′,2″-indene]-1″,2,3″-trione, C26H17Br2NO4
- Crystal structure of bis(((3a,7a-dihydro-1H-benzo[d][1,2,3]triazol-1-yl)methyl) triphenylphosphonium) tetrachloridomanganate(II), C50H42Cl4MnN6P2
- The crystal structure of 4,9-bis(4-chlorophenyl)-1,6-bis(2-cyanobenzyl)-2,4a,5,6,7,7a-hexahydro-1H-2,7,5-(epiprop[2]ene[1,1,3]triyl)pyrrolo[3,4-b]pyridine-3,10-dicarbonitrile, C40H26Cl2N6
- The crystal structure of poly((μ2-3-(3-nitro-4-carboxylphenyl)benzoate-κ3O, O′:O″)-μ2-1,4-bis(1-imidazolyl)benzene-κ2N:N′-cadmium(II)), C26H17N5O6Cd
- The crystal structure of 6-hydroxy-5H-pyrrolo[3,4-b]pyridine-5,7(6H)-dione monohydrate, C7H6N2O4
- Crystal structure of 4-((cyclohexylsulfonyl)methyl)-1,2,3,4-tetrahydrobenzo [4,5]imidazo[1,2-a]pyridine, C18H24N2O2S
- Crystal structure of 4,7-diphenyl-1,10-phenanthroline-κ2N,N′)-bis(2,4-di(fluorine)-1-phenylpyridine-κ2C,N)-iridium(III) hexafluorophosphate–dichloromethane (1/1), C47H30Cl2F10IrN4P
- Crystal structure of (4-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)boronic acid, C19H15BN2O2
- The crystal structure of (E)-(2-((pyridin-2-ylmethylene)amino)phenyl)arsonic acid, C12H11AsN2O3
- The crystal structure of N(benzyl(phenyl)carbomothioyl)benzamide, C21H18N2OS
- The crystal structure of bis(2-picolinium) hexachlorostannate dichloromethane monosolvate, C13H18Cl8N2Sn
- Crystal structure of poly[tetraaqua-bis(μ4-3–1-(carboxylatomethyl)-1H-1,2,4-triazole-3-carboxylato)-κ4O:O′,O″,N)zinc(II)], C5H7N3O6Zn
- The crystal structure of the co-crystal isonicotinamide – 2-(nitrophenyl)methanol (1/1), C6H6N2O·C7H7NO3
- The crystal structure of 4-(3-carboxy-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinolin-7-yl)piperazin-1-ium 2-fluorobenzoate hydrate, C23H25F2N3O6
- Crystal structure of [diaqua-{1H-benzo[d]imidazol-3-ium-5,6-dicarboxylato-κ2O,O′}magnesium(II)] C18H14MgN4O10
- Crystal structure of (3-(dimethoxymethyl)-5-methoxy-1H-indol-1-yl) (2-iodo-5-methoxyphenyl)methanone, C20H20INO5
- The crystal structure of 3,7,11-trimethylbenzo[5,6][1,4]thiazino[2,3,4-kl]phenothiazine 5,5,9,9-tetraoxide, C21H17NO4S2
- Crystal structure of tris(piperazine-1,4-diium)bis(2-hydroxy-1,2,3-propane-tricarboxylate) pentahydrate, C24H56N6O19
- Crystal structure of 2-chloro-5-((5-isopropyl-2-methylphenoxy)methyl)pyridine, C16H18ClNO
- Crystal structure of (E)-4-(4-(1H-pyrrol-1-yl)benzylidene)-6,8-dimethoxy-3,4-dihydrobenzo[(b)]oxepin-5(2H)-one, C23H21NO4
- Crystal structure of (E)-N′-(3,4-dichlorobenzylidene)-3,4,5-trimethoxybenzohydrazide, C17H16Cl2N2O4
- The crystal structure of 2-(2-hydroxyphenyl)-3-(pyridin-2-yl)-2,3- dihydroquinazolin-4(1H)-one, C19H15N3O2
- Crystal structure of 5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-8-methylchroman-4-one, C17H16O5
- Crystal structure of bis[(3,4-dimethoxybenzyl)triphenylphosphonium]di-μ2-bromido-dibromidodicopper(I)
- Crystal structure of bis [(1,3-dioxolan-2-ylmethyl)triphenylphosphonium] tetrabromidodicopper(I), C22H22Br2CuO2P
- Crystal structure of [1-(4-carboxyphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxylic acid], C12H8N2O5
- The crystal structure of one-dimensional cooridnation polymer bis(thiocyanato)-bis((1E,2E)-1,2-bis(1-(pyridin-3-yl)ethylidene)-hydrazine κ2N:N)iron(II), (C30H28N10S2Fe)n
- Crystal structure of ((4-acetamidophenyl)sulfonyl)-l-alanine, C11H14N2O5S
- Crystal structure of [(1-naphthalen-1-yl-methyl)triphenylphosphonium] dichloridocopper(I), [C29H24P]+[CuCl2]−
- RbTm3S5: the first rubidium lanthanoid(III) sulfide with CsEr3Se5-type crystal structure
- Crystal structure of 2,2′-((ethane-1,2-diylbis(methylammoniumdiyl))bis(methylene))bis(pyridin-1-ium) diiodido-tris(μ2-iodido-κ2I:I)dicopper(II) chloride dihydrate, C16H30Cu2I6N4O2
- The crystal structure of 4-(trifluoromethyl)pyridine-2-carboxylic acid, C7H4F3NO2
- The crystal structure of (E)-2-ethoxy-1-methoxy-4-(2-(methylsulfonyl)vinyl)benzene, C12H16O4S
- Crystal structure of potassium 1H,1H,2H,2H-perfluorooctanesulfonate, C8H4O3F13SK
- Crystal structure of 4-(4-(quinolin-8-yloxy)-1,2,5-thiadiazol-3-yl)morpholine, C15H14O2N4S
- The crystal structure of 1,4-bis(bromomethyl)-2,5-dimethylbenzene, C10H12Br2
- The crystal structure of imidazo[4,5-e][1,3]diazepine-4,6,8-triamine methanol solvate, C7H11N7O
- The crystal structure of chlorido-bis(1,10-phenantroline-κ2N,N′)-(2-formylphenoxyacetato-κ2O,O) lead(II), C33H23N4O4ClPb
- Crystal structure of pyridinium tetrakis(1,1,1-trifluoro-2,4-pentadionato-κ2O,O′)yttrium(III) C20F12H16YO8C5H6N