Home Physical Sciences Crystal structure and optical properties of 1,6-bis(methylthio)pyrene, C18H14S2
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Crystal structure and optical properties of 1,6-bis(methylthio)pyrene, C18H14S2

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Published/Copyright: May 27, 2019

Abstract

C18H14S2, monoclinic, P21/c (no. 14), a = 10.196(3) Å, b = 14.756(4) Å, c = 9.508(3) Å, β = 103.965(14)°, V = 1388.3(7) Å3, Z = 4, Rgt(F) = 0.0480, wRref(F2) = 0.1207, T = 200(2) K.

CCDC no.: 1910701

The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Yellow block
Size:0.12 × 0.10 × 0.08 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.37 mm−1
Diffractometer, scan mode:Bruker APEX-II, φ and ω
θmax, completeness:29.5°, >99%
N(hkl)measured, N(hkl)unique, Rint:12544, 3858, 0.094
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2747
N(param)refined:183
Programs:Bruker [1], SHELX [2], PLATON [3]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
S10.00589(5)0.33725(4)0.21136(5)0.03660(15)
S20.78548(5)0.45468(4)0.91573(5)0.04127(16)
C1−0.0261(2)0.24411(17)0.0884(3)0.0548(6)
H1A0.03400.24710.02490.082*
H1B−0.11790.24680.03220.082*
H1C−0.01180.18830.14190.082*
C20.17725(18)0.32077(13)0.30699(19)0.0296(4)
C30.2541(2)0.24787(14)0.2787(2)0.0368(5)
H30.21620.20680.20610.044*
C40.3861(2)0.23588(14)0.3575(2)0.0361(4)
H40.43530.18670.33690.043*
C50.44687(18)0.29607(13)0.46726(18)0.0289(4)
C60.58327(19)0.28427(13)0.5508(2)0.0335(4)
H60.63370.23570.53040.040*
C70.63992(19)0.34228(13)0.65835(19)0.0314(4)
H70.72830.33250.71080.038*
C80.56661(18)0.41880(12)0.69357(18)0.0267(4)
C90.62123(18)0.47889(13)0.80919(18)0.0299(4)
C100.5450(2)0.55189(14)0.83734(19)0.0342(4)
H100.58180.59140.91270.041*
C110.4148(2)0.56641(13)0.7544(2)0.0336(4)
H110.36630.61630.77400.040*
C120.35513(18)0.50757(12)0.64194(18)0.0276(4)
C130.21914(19)0.51930(13)0.55777(19)0.0314(4)
H130.16900.56830.57740.038*
C140.16201(18)0.46113(13)0.45084(19)0.0297(4)
H140.07370.47110.39830.036*
C150.23474(18)0.38416(12)0.41665(18)0.0265(4)
C160.37095(17)0.37133(12)0.49730(17)0.0254(4)
C170.43139(17)0.43322(12)0.61025(17)0.0249(4)
C180.8190(2)0.54611(16)1.0436(2)0.0440(5)
H18A0.81190.60270.99260.066*
H18B0.90860.53981.10430.066*
H18C0.75460.54471.10230.066*

Source of material

All chemicals were purchased from commercial sources and used as received without further purification. The title complex was prepared in two steps using pyrene as the starting material. The intermediate 1,6-dibromopyrene was prepared through the bromination of pyrene according to the literature [4]. The final product was synthesized as following: 1.69 g (12 mmol) sodium thiomethoxide (50%) and 1.80 g (5 mmol) 1,6-dibromopyrene were added subsequently to a 50 mL two-neck round bottom flask. Then, 40 mL DMF was added into the above flask. The mixture was stirred at 160 °C overnight under the protection of nitrogen. After the reaction was completed, a yellow solid precipitate was observed, which was separated by filtration and washed with ethanol several times, and then recrystallized with toluene to obtain yellow block crystals. Yield: 85%. Melting point, 200−202 °C. 1H NMR (400 MHz, CDCl3) δ (TMS, p.p.m.): 8.64 (s, 2H, J = 8.63 Hz), 8.16−8.12 (m, 2H), 8.10−7.96 (m, 4H), 2.73 (s, 6H). MALDI-TOF MS (m/z): calculated for C18H14S2 294.42, found 294.32. Elemental analysis–calculated for C18H14S2: C, 73.42°; H, 4.79°; S, 21.78°; found: C, 73.34°; H, 4.78°; S, 21.67°.

Experimental details

All H atoms bond to C atoms were introduced using the appropriate HFIX command in the SHELXL2014 program [2], with the value of 0.93 Å or 0.96 Å for C—H bonds distances. All H atoms were set as riding, with Uiso(H) = 1.2Ueq(C) or Uiso(H) = 1.5Ueq(C) for aromatic and methly hydrogens, respectively. The structure was checked using PLATON [3].

Comment

It is well known that organic functional materials with interesting optical, electronic, magnetic, biological and mutifunctional properties have attracted considerable attention, and have for instance been used as organic light-emitting diodes (OLED), organic field effect transistors (OFET), organic lasers, chemosensors and as solar cell components, etc [5], [6], [7], [8], [9]. As one of the most important organic functional building precursors, pyrene and its derivatives have attracted particular attention because of their interesting optical and electronic properties [10], [11], [12]. Up to date, a large number of new pyrene-based functional materials have been characterized and their properties have been investigated [13], [14], [15]. Sulfur-containing organic compounds have also attracted interest on the basis of their special electronic structures. Compared with the reports on nitrogen-containing, pyrene-based compounds, the studies on pyrene-based thioether compounds are relatively limited. Recently, Xu and Wen et al. have reported the crystal structure of one diaryl sulfide 1,3,6,8-tetrakis(p-tolylthio)pyrene and 1,8-bis(p-tolylthio)pyrene using pyrene as the starting precursor [16], [17]. Herein, we report the crystal structure of a new pyrene-based arylalkyl thioether, 1,6-bis(methylthio)pyrene, which was synthesized by the nucleophilic substitution reaction of sodium thiomethoxide with 1,6-dibromopyrene in high yield. In addition, the optical properties of the title compound were studied preliminarily.

The single X-ray diffraction analysis of the title compound shows that the crystal structure agrees well with expected structure. All the non hydrogen atoms are almost in a strict plane with the largest deviation from the main plane of 0.127(3) Å. The C—S bond distances in the title compound are distributed in a relatively narrow range of 1.7719(19)−1.793(2) Å, in which the Calkyl—S bond distances are slightly larger that those of Caryl—S. The two C—S—C bond angles are very similar with 103.38(10)° for C2—S1—C1 and 103.61(10)° for C9—S2—C18. The C—S bond distances and C—S—C bond angles are within the expected values for diaryl sulfide compounds and they are comparable to those found in 1,3,6,8-tetrakis(p-tolylthio)pyrene and 1,8-bis(p-tolylthio) pyrene [16], [17]. The crystal packing of the title compound can be described by the analysis of three main intermolecular interactions. Firstly, dimers of molecules related by inversion symmetry are held together by π⋯π interactions. Secondly, these dimers form zigzag one-dimensional chains held together by intermolecular C—H⋯π interactions, Then, these chains are linked together by S⋯S interactions.

The optical properties of the title compound were investigated preliminarily. The title compound was dissolved in dichloromethane and absorption was observed in the range of 325 to 425 nm. A main emission peak around 421 nm with an obvious shoulder emission peak at 436 nm for the above solution were also observed. The emission intensity is significantly higher than that of its precursor pyrene with a ca. 8-fold increase. The crystal state emits yellow-green fluorescence with a peak at 530 nm. Similar to 1,8-bis(p-tolylthio)pyrene [17], the title compound also can be oxided by some peroxides such as m-chloroperoxybenzoic acid and displays “on–off” optical switching property. However, its sensitivity for m-chloroperoxybenzoic acid is significantly lower than that of 1,8-bis(p-tolylthio)pyrene, which may be due to the fact that the oxidation of alkylarylsulfide is difficult compared to diarylsulfide.

Acknowledgements

This work was Funded by the Open Research Fund Program of Shandong Provincial Key Laboratory of Oilfield Produced Water Treatment and Environmental Pollution Control (Sinopec Petroleum Engineering Corporation).

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Received: 2019-03-01
Accepted: 2019-04-17
Published Online: 2019-05-27
Published in Print: 2019-09-25

©2019 Guang-Qing Wang et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 Public License.

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  68. Crystal structure of (E)-N-(4-chlorophenyl)-1-(pyridin-2-yl)methanimine, C12H9ClN2
  69. Crystal structure of 8-bromo-6-oxo-2-phenyl-6H-pyrrolo[3,2,1-ij]quinoline-5-carbaldehyde, C18H11BrNO2
  70. Crystal structure of 1,4-bis(2-azidoethyl)piperazine-1,4-diium dichloride trihydrate, C8H18N8Cl2 ⋅ 3 H2O
  71. Crystal structure of (E)-4-bromo-N-(pyridin-2-ylmethylene)aniline, C12H9BrN2
  72. Crystal structure of bis[(2-(3-bromophenyl)-5-methyl-1,3-dioxane-5-carboxylato-κ-O)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)]nickel(II), C40H60Br2N4NiO8
  73. The crystal structure of (1E,2E)-2-methyl-4-((7-oxo-7H-furo[3,2-g]chromen-9-yl)oxy)but-2-enal O-isonicotinoyl oxime–trichloromethane (3/1), C67H49Cl3N6O18
  74. Crystal structure of 3-(2-ethoxy-2-oxoethyl)-1-methyl-1H-imidazol-3-ium hexafluoridophosphate(V), C8H13F6N2O2P
  75. Crystal structure of bis[(2-(2-bromophenyl)-5-ethyl-1,3-dioxane-5-carboxylato-κO)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)]nickel(II) hemihydrate C42H65Br2N4NiO8.5
  76. The crystal structure of N-(7-(4-fluorobenzylidene)-3-(4-fluorophenyl)-3,3a,4,5,6,7-hexahydro-2H-indazole-2-carbonothioyl)benzamide, C28H23F2N3OS
  77. The crystal structure of N1,N4-bis(pyridin-3-yl)cyclohexane-1,4-dicarboxamide, C18H20N4O2
  78. Crystal structure of (E)-2-(3,6-bis(ethylamino)-2,7-dimethyl-9H-xanthen-9-yl)-N′-((6-methylpyridin-2-yl)methylene)benzohydrazide – methanol (1/1), C34H37N5O3
  79. Crystal structure of 2-oxo-1-(pyrimidin-5-ylmethyl)-3-(3-(trifluoromethyl)phenyl)-1,2-dihydro-5l4-pyrido[1,2-a]pyrimidin-4-olate, C20H13F3N4O2
  80. Crystal structure of poly[(μ3-9H-carbazole-3,6-dicarboxylato-κ3O1: O2: O3)(μ2-4-(pyridin-4-yl)pyridine-κ2N1:N1′)zinc(II)], C19H11N2O4Zn
  81. Crystal structure of (E)-N′-((1,8-dihydropyren-1-yl)-methylene)picolinohydrazide, C23H15N3O
  82. Crystal structure of catena-poly{[μ2-1,2-bis(diphenylphosphino)ethane]dichloridocadmium(II)}, C26H24CdCl2P2
  83. Crystal structure of the 1:2 co-crystal between N,N′-bis(4-pyridylmethyl)oxalamide and acetic acid as a dihydrate, C14H14N4O2⋅2 C2H4O2⋅2 H2O
  84. Crystal structure of the co-crystal N,N′-bis(3-pyridylmethyl)oxalamide acetic acid (1/2), C14H14N4O2⋅2C2H4O2
  85. Crystal structure of the co-crystal N,N′-bis(4-pyridylmethyl)oxalamide and 2,3,5,6-tetrafluoro-1,4-di-iodobenzene (1/1), C14H14N4O2⋅C6F4I2
  86. Crystal structure of the co-crystal 4-[(4-carboxyphenyl)disulfanyl]benzoic acid–(1E,4E)-1-N,4-N-bis(pyridin-4-ylmethylidene)cyclohexane-1,4-diamine (1/1), C14H10O4S2⋅C18H20N4
  87. Crystal structure of hexacarbonyl-bis(μ2-di-n-propyldithiocarbamato-κ3S,S′:S3S:S:S′)-di-rhenium(I), C20H28N2O6Re2S4
  88. Crystal structure of fac-tricarbonyl-morpholine-κN-(morpholinocarbamodithioato-κ2S,S′)rhenium(I), C12H17N2O5ReS2
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