Home The crystal structure of N,N′-(1,2-phenylene)bis (2-((2-oxopropyl)selanyl)benzamide), C26H24N2O4Se2
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The crystal structure of N,N′-(1,2-phenylene)bis (2-((2-oxopropyl)selanyl)benzamide), C26H24N2O4Se2

  • Shuxiao Feng ORCID logo EMAIL logo , Xuan Zhong , Kaiyan Qi , Yafei Guo ORCID logo , Junling Wang ORCID logo , Guangna Gu and Junying Ma
Published/Copyright: May 31, 2023

Abstract

C26H24N2O4Se2, monoclinic, C2/c (no. 15), a = 22.9092(7) Å, b = 5.8900(2) Å, c = 36.6209(9) Å, β = 91.983(3)°, V = 4938.5(3) Å3, Z = 8, R gt (F) = 0.0419, wR ref (F 2) = 0.1162, T = 293 K.

CCDC no.: 2103258

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: 0.13 × 0.10 × 0.08 mm
Wavelength: Cu Kα radiation (1.54184 Å)
μ: 4.04 mm−1
Diffractometer, scan mode: Xcalibur, ω
θ max, completeness: 67.1°, >99 %
N(hkl) measured, N(hkl)unique, R int: 14,718, 4379, 0.038
Criterion for I obs, N(hkl)gt: I obs > 2 σ(I obs), 3327
N(param)refined: 325
Programs: CrysAlisPRO [1], Olex2 [2], SHELX [34]
Table 2:

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

Atom x y z U iso*/U eq
Se1 0.47870 (2) 0.15546 (9) 0.54004 (2) 0.05475 (16)
Se2 0.67807 (2) 0.24397 (10) 0.70607 (2) 0.06457 (18)
O1 0.54585 (14) −0.1959 (6) 0.55983 (8) 0.0692 (9)
O2 0.69068 (13) −0.1167 (5) 0.66263 (7) 0.0609 (8)
O3 0.34211 (14) 0.4608 (7) 0.55843 (9) 0.0793 (10)
O4a 0.5843 (8) 0.376 (4) 0.7620 (6) 0.114 (5)
N1 0.61238 (15) −0.2067 (6) 0.60686 (9) 0.0522 (9)
H1 0.6263 (13) −0.146 (5) 0.6258 (6) 0.023 (8)*
N2 0.73920 (15) −0.1431 (6) 0.61037 (9) 0.0511 (8)
H2 0.7670 (15) −0.081 (8) 0.5996 (12) 0.075 (16)*
C1 0.48852 (16) 0.1790 (7) 0.59245 (10) 0.0477 (10)
C2 0.45913 (17) 0.3427 (8) 0.61201 (11) 0.0570 (11)
H2A 0.4339 0.4427 0.5997 0.068*
C3 0.4670 (2) 0.3584 (9) 0.64949 (12) 0.0693 (14)
H3 0.4469 0.4680 0.6623 0.083*
C4 0.5041 (2) 0.2143 (10) 0.66775 (12) 0.0756 (15)
H4 0.5088 0.2242 0.6930 0.091*
C5 0.53459 (19) 0.0541 (10) 0.64891 (11) 0.0685 (13)
H5 0.5602 −0.0430 0.6615 0.082*
C6 0.52753 (16) 0.0357 (8) 0.61088 (10) 0.0510 (10)
C7 0.56201 (18) −0.1334 (8) 0.59053 (11) 0.0530 (10)
C8 0.65061 (18) −0.3665 (7) 0.59201 (11) 0.0495 (10)
C9 0.6284 (2) −0.5589 (8) 0.57457 (13) 0.0637 (12)
H9 0.5884 −0.5861 0.5743 0.076*
C10 0.6644 (2) −0.7101 (8) 0.55764 (15) 0.0719 (14)
H10 0.6486 −0.8346 0.5452 0.086*
C11 0.7234 (3) −0.6761 (9) 0.55926 (14) 0.0735 (14)
H11 0.7477 −0.7780 0.5478 0.088*
C12 0.7472 (2) −0.4924 (8) 0.57771 (12) 0.0600 (11)
H12 0.7875 −0.4730 0.5790 0.072*
C13 0.71138 (18) −0.3356 (7) 0.59446 (10) 0.0485 (9)
C14 0.72992 (17) −0.0506 (8) 0.64348 (10) 0.0514 (10)
C15 0.76875 (17) 0.1409 (8) 0.65555 (10) 0.0515 (10)
C16 0.8228 (2) 0.1760 (9) 0.64032 (13) 0.0682 (13)
H16 0.8354 0.0758 0.6226 0.082*
C17 0.8581 (2) 0.3555 (10) 0.65077 (14) 0.0748 (14)
H17 0.8938 0.3780 0.6399 0.090*
C18 0.8402 (2) 0.5000 (10) 0.67731 (15) 0.0799 (16)
H18 0.8639 0.6209 0.6846 0.096*
C19 0.7878 (2) 0.4692 (9) 0.69329 (13) 0.0699 (13)
H19 0.7765 0.5689 0.7114 0.084*
C20 0.75093 (18) 0.2906 (8) 0.68283 (11) 0.0545 (11)
C21 0.43181 (18) 0.4280 (8) 0.52876 (11) 0.0566 (11)
H21A 0.4443 0.5513 0.5447 0.068*
H21B 0.4376 0.4743 0.5037 0.068*
C22 0.36861 (18) 0.3790 (8) 0.53385 (11) 0.0552 (11)
C23 0.3393 (2) 0.2172 (10) 0.50735 (13) 0.0763 (15)
H23A 0.3208 0.0981 0.5206 0.114*
H23B 0.3679 0.1528 0.4919 0.114*
H23C 0.3105 0.2972 0.4927 0.114*
C24 0.6748 (2) 0.5241 (9) 0.73489 (14) 0.0801 (15)
H24A 0.7024 0.5181 0.7556 0.096*
H24B 0.6838 0.6549 0.7200 0.096*
C25 0.6130 (3) 0.5370 (11) 0.74766 (14) 0.0823 (16)
C26a 0.5823 (8) 0.763 (3) 0.7458 (6) 0.116 (5)
H26Aa 0.5658 0.7854 0.7216 0.174*
H26Ba 0.6099 0.8818 0.7514 0.174*
H26Ca 0.5519 0.7654 0.7631 0.174*
O4Ab 0.6046 (11) 0.439 (5) 0.7728 (8) 0.114 (5)
C26Ab 0.5757 (11) 0.678 (4) 0.7240 (7) 0.116 (5)
H26Db 0.5831 0.6445 0.6989 0.174*
H26Eb 0.5841 0.8353 0.7288 0.174*
H26Fb 0.5355 0.6476 0.7287 0.174*
  1. aOccupancy: 0.565 (15), bOccupancy: 0.435 (15).

1 Source of material

To a 50 mL round bottom flask, add 2-chloroselenylbenzoyl chloride (0.5 mmoL) and 3 mL acetone and the mixture was kept for 18 h under anhydrous condition at room temperature. After the reactant completely reacts, o–phenylenediamine (0.5 mmoL) is added and the reaction continues for 15 min. Add 5 mL water slowly to quench the reaction, and let it stand to precipitate crystals. For the crude product without crystal precipitation, use ethyl acetate Ester (3 × 20 mL) extraction, column chromatography (petroleum ether/ethyl acetate = 3:1) separation and purification to obtain the target product.

2 Experimental details

Using Olex2 [2], the structure was solved with the ShelXS [3] structure solution program and refined with the ShelXL [4] refinement package.

3 Comment

As an organic selenium compound with antioxidant and anti-inflammatory properties, Ebselen is a mimic of glutathione peroxidase (GPX) and an excellent scavenger of peroxynitrite [5]. The crystals that it combines with various organic amino acids have attracted much attention [6, 7] and its analogues were extensively studied [8, 9]. The title crystal is symmetric Ebselen analogue of open loop mother nucleus, it is the latest discovery based on previous research [10]. The crystal structure is shown in the Figure which includes that the two open loop mother nucleus of Ebselen are connected to acetone by Se–C and they are connected to the ortho benzene ring. The dihedral angles between the C8–C9–C10 plane and other two benzene planes where the C1–C2–C3 and C15–C16–C17 are located were found to be 65.1 ° and 23.8 ° respecticely. The angle between the benzene rings on both sides is 81.4 ° , the C(1)–Se(1)–C(21) and the C(20)–Se(2)–C(24) bond angles are 101.21 ( 18 ) ° and 99.7 ( 2 ) ° , and the C(7)–N(1)–C(8)–C(9) and the C(14)–N(2)–C(13)–C(12) torsion angles are 42.2 ( 6 ) ° and 174.6 ( 4 ) ° . The bond lengths of Se(1)–C(21), Se(2)–C(24), N(1)–C(8), N(2)–C(13) are 1.967(4) Å, 1.961(5) Å, 1.408(5) Å, 1.416(5) Å, respectively. The crystal data of bond lengths and angles are completely according to expected data [11, 12].


Corresponding author: Shuxiao Feng, School of Chemistry and Chemical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China, E-mail:

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

  2. Research funding: None declared.

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

References

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Received: 2023-04-12
Accepted: 2023-05-11
Published Online: 2023-05-31
Published in Print: 2023-08-28

© 2023 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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