Home Crystal structure of 3-benzyl-2,3-dihydro-2-thioxoquinazolin-4(1H)-one, C15H12N2OS
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Crystal structure of 3-benzyl-2,3-dihydro-2-thioxoquinazolin-4(1H)-one, C15H12N2OS

  • Ling-Ling Yan and Hong-Xin Cai EMAIL logo
Published/Copyright: July 19, 2017

Abstract

C15H12N2OS, triclinic, P1̅ (no. 2), a = 6.4172(6) Å, b = 9.7237(10) Å, c = 10.5031(10) Å, α = 84.838(2)°, β = 87.561(2)°, γ = 78.557(2)°, V = 639.54(11) Å3, Z = 2, Rgt(F) = 0.0362, wRref(F2) = 0.0934, T = 296 K.

CCDC no.:: 1560151

The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.

Table 1

Data collection and handling.

Crystal:Colourless block
Size:0.25 × 0.23 × 0.20 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:2.5 cm−1
Diffractometer, scan mode:Bruker APEX-II, φ and ω
2θmax, completeness:50°, >99%
N(hkl)measured, N(hkl)unique, Rint:3328, 2255, 0.013
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 1914
N(param)refined:173
Programs:SHELX [1], Bruker programs [2]
Table 2

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

AtomxyzUiso*/Ueq
S10.20040(7)1.04133(5)0.33319(5)0.04681(19)
N20.5610(2)0.85199(14)0.38262(13)0.0355(3)
N10.2632(2)0.82817(15)0.50750(13)0.0391(4)
H1A0.13110.85750.52640.047*
O10.87772(19)0.70547(14)0.42301(13)0.0521(4)
C70.3491(3)0.90068(17)0.41106(16)0.0358(4)
C80.6891(3)0.73697(18)0.45076(17)0.0384(4)
C60.3682(3)0.71075(18)0.57899(16)0.0365(4)
C10.5829(3)0.66224(18)0.55210(16)0.0360(4)
C20.6912(3)0.54254(19)0.62182(18)0.0449(5)
H2A0.83460.50880.60430.054*
C90.6700(3)0.92533(19)0.27768(17)0.0420(4)
H9A0.80560.93800.30730.050*
H9B0.58451.01790.25610.050*
C50.2614(3)0.6417(2)0.67484(17)0.0456(5)
H5A0.11780.67460.69250.055*
C30.5854(3)0.4747(2)0.71638(19)0.0513(5)
H3A0.65760.39480.76300.062*
C40.3704(3)0.5248(2)0.74284(19)0.0507(5)
H4A0.30040.47830.80740.061*
C100.7074(3)0.84590(19)0.15964(17)0.0427(4)
C150.5412(3)0.8324(2)0.08560(19)0.0535(5)
H15A0.40250.87380.10770.064*
C110.9117(3)0.7851(3)0.1226(2)0.0632(6)
H11A1.02560.79460.17080.076*
C140.5811(4)0.7571(3)−0.0220(2)0.0692(7)
H14A0.46870.7474−0.07130.083*
C130.7853(5)0.6970(3)−0.0559(2)0.0785(8)
H13A0.81110.6468−0.12810.094*
C120.9500(4)0.7107(3)0.0158(3)0.0830(8)
H12A1.08840.6698−0.00720.100*

Source of materials

The title compound was synthesized according to the literature method [5]. The crystal suitable for single crystal X-ray diffraction was obtained by recrystallization from acetonitrile.

Experimental details

All the H atoms were located in the difference electron density map. The H atoms were situated into the idealized positions with the carrier atom-H distances = 0.93 Å for aryl, 0.97 Å for methylene and 0.86 Å for the secondary amine hydrogen atom. The Uiso values were constrained to be 1.2Ueq of the carrier atoms.

Comment

Quinazoline derivatives exhibit a wide variety of pharmacological activities [3], [4], [5], and they are important intermediates in the synthesis of a variety of valuable heterocyclic compounds [4]. The crystal structure of one thioquinazoline, namely 3-benzyl-2,3-dihydro-2-thioxoquinazolin-4(1H)-one, is reported in this work.

In the title crystal structure, the bond lengths of C=S and C=O are 1.6724(17) and 1.218(2) Å, confirming that both are double bonds (cf. the figure). In the crystal, pairs of intermolecular N—H⋅⋅⋅S hydrogen bonds link two molecules into a centrosymmetric dimer, forming a R22(8) ring motif. In addition, the dimers are further connected with each other into one dimensional chains via weak intermolecular C–H⋅⋅⋅O hydrogen bonds. Bond lengths and angles are in accord with directly related structures [6, 7] .

Acknowledgement

The authors are grateful for financial support from the Education Department of Henan Province (12B150011).

References

Sheldrick, G. M.: A short history of SHELX. Acta Crystallogr. A64 (2008) 112–122.10.1107/S0108767307043930Search in Google Scholar PubMed

Bruker. SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, (USA), 2007.Search in Google Scholar

Kadi, A. A.: Synthesis and antimicrobial activity of some new quinazolin-4(3H)-one derivatives. J. Saudi Chem. Soc. 15 (2011) 95–100.10.1016/j.jscs.2010.06.001Search in Google Scholar

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Received: 2017-2-22
Accepted: 2017-7-4
Published Online: 2017-7-19
Published in Print: 2017-9-26

©2017 Ling-Ling Yan et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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