Home Physical Sciences The crystal structure of (9H-thioxanthen-9- ylidene)hydrazine monohydrate, C13H11N2SO0.5
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The crystal structure of (9H-thioxanthen-9- ylidene)hydrazine monohydrate, C13H11N2SO0.5

  • Qi Zhou , Li-Wen Zhai , Jing-Jing Zuo , Zhong-Yan Li EMAIL logo and Lin Yuan ORCID logo EMAIL logo
Published/Copyright: October 31, 2024

Abstract

C13H10N2S, orthorhombic, Pccn (no. 56), a = 30.55(2) Å, b = 7.760(6) Å, c = 9.622(7) Å, V = 2,281(3) Å3, Z = 4, R gt(F) = 0.0393, wR ref(F 2) = 0.1033, T = 296(2) K.

CCDC no.: 2392066

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: Block
Size: 0.51 × 0.46 × 0.38 mm
Wavelength: MoKα radiation (0.71073 Å)
μ: 0.26 mm−1
Diffractometer, scan mode: Bruker Apex-II, φ and ω
θ max, completeness: 27.4°, >99 %
N(hkl)measured , N(hkl)unique, R int: 22,664, 2,574, 0.020
Criterion for I obs, N(hkl)gt: I obs > 2 σ(I obs), 2,345
N(param) refined: 155
Programs: Bruker, 1 Shelx, 2 , 3 Olex2 4
Table 2:

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

Atom x y Z U iso*/U eq
C1 0.15131 (5) −0.01165 (18) 0.33458 (14) 0.0334 (3)
C2 0.10734 (5) 0.01680 (18) 0.27308 (16) 0.0357 (3)
C3 0.10141 (6) 0.1056 (2) 0.14768 (17) 0.0444 (4)
H3 0.1257 0.1474 0.1003 0.053*
C4 0.05996 (6) 0.1322 (2) 0.0930 (2) 0.0591 (5)
H4 0.0566 0.1909 0.0095 0.071*
C5 0.02362 (6) 0.0711 (3) 0.1633 (3) 0.0665 (6)
H5 −0.0041 0.0859 0.1252 0.080*
C6 0.02823 (6) −0.0116 (2) 0.2893 (2) 0.0601 (5)
H6 0.0036 −0.0498 0.3371 0.072*
C7 0.06989 (5) −0.0381 (2) 0.34501 (18) 0.0435 (4)
C8 0.12185 (6) −0.0491 (2) 0.57506 (17) 0.0461 (4)
C9 0.12660 (8) −0.0380 (3) 0.71979 (19) 0.0644 (6)
H9 0.1041 −0.0744 0.7778 0.077*
C10 0.16472 (9) 0.0268 (3) 0.7759 (2) 0.0736 (7)
H10 0.1679 0.0329 0.8719 0.088*
C11 0.19801 (8) 0.0826 (3) 0.6910 (2) 0.0665 (6)
H11 0.2236 0.1259 0.7298 0.080*
C12 0.19352 (6) 0.0746 (2) 0.54774 (18) 0.0496 (4)
H12 0.2159 0.1150 0.4910 0.059*
C13 0.15558 (5) 0.00633 (19) 0.48765 (15) 0.0382 (3)
N1 0.18700 (4) −0.05159 (17) 0.26942 (13) 0.0382 (3)
N2 0.18654 (5) −0.06885 (19) 0.12698 (13) 0.0464 (3)
H2A 0.2078 −0.1354 0.1005 0.056*
H2B 0.1620 −0.1142 0.0996 0.056*
O1 0.2500 0.7500 0.43799 (17) 0.0472 (4)
H1 0.2339 (7) 0.810 (3) 0.382 (2) 0.076 (7)*
S1 0.07357 (2) −0.14275 (6) 0.50767 (5) 0.05887 (17)

1 Source of material

The 9H-thioxanthene-9-thione (0.2 g, 0.9 mmol) was dissolved in THF (30 mL). The solution was treated at room temperature with aq. 80 % hydrazine (4 mL, 140.0 mmol). The solution decolorized within several minutes. The solvent and excess hydrazine were removed at reduced pressure. The residue was purified by flash column chromatography (petroleum ether/EtOAc = 10/1) to yield the product as pale yellow solid (0.18 g, 0.79 mmol, 88 %). Single crystals of the product can be obtained by recrystallization from dichloromethane.

2 Experimental details

All hydrogen atoms were identified in difference Fourier syntheses. The U iso values of all hydrogen atoms were set to 1.2U eq(C).

3 Comment

As a class of sulfur-containing polycyclic aromatic hydrocarbons, thioxanthene often appears in biologically active aromatic heterocyclic compounds and can also be used in solid solutions. 5 , 6 In addition, because of its good optical properties, thioxanthene is often used as a part of light-driven molecular motors. 7 Because of this, the structure of thioxanthene has always been the focus of researchers. 8 , 9

In the crystal structure, the 9H-thiaxanthene unit is significantly distorted from planarity, the benzene ring C(2)–C(7) and C(8)–C(13) connects to each other with C(1) and S(1) atom. The dihedral angle between the plane through C(2)–C(7) and the plane through C(8)–C(13) is 34.368(17). The bond lengths of S(1)–C(7), S(1)–C(8), C(1)–C(2), C(1)–C(13), C(1)–N(1) and N(1)–N(2) are 1.767(2), 1.767(2), 1.485(2), 1.485(2), 1.2953(19) and 1.377(2) Å, respectively. The bond angles of C(7)–S(1)–C(8), C(2)–C(1)–C(13), C(2)–C(1)–N(1), C(13)–C(1)–N(1) and C(1)–N(1)–N(2) are 100.91(8), 117.44(12), 127.18(14), 115.39(13) and 119.77(13), respectively, indicating the C(1) atom is in the sp2 hybridization state. The geometric parameters are all in the expected ranges. 10


Corresponding authors: Zhong-Yan Li and Lin Yuan, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou Hunan 425199, P.R. China, E-mail: (Z.-Y. Li), (L. Yuan)

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Conflict of interest: The authors declare no conflicts of interest regarding this article.

  3. Research funding: Scientific Research Fund of Hunan Provincial Education Department (21A0518), Yongzhou Guiding Science and Technology Plan Project (2021).

References

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Received: 2024-09-19
Accepted: 2024-10-18
Published Online: 2024-10-31
Published in Print: 2025-02-25

© 2024 the author(s), published by De Gruyter, Berlin/Boston

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

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