Home Halogen bonding in crystal structure of bis(1,4,7,10-tetraoxacyclododecane-κ4O,O′,O′′,O′′′)cesium triiodide, C16H32CsI3O8
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Halogen bonding in crystal structure of bis(1,4,7,10-tetraoxacyclododecane-κ4O,O′,O′′,O′′′)cesium triiodide, C16H32CsI3O8

  • Samir Haj Bloukh and Zehra Edis ORCID logo EMAIL logo
Published/Copyright: February 12, 2020

Abstract

C16H32CsI3O8, triclinic, P1̄ (no. 2), a = 10.7930(5) Å, b = 11.5610(5) Å, c = 12.4880(5) Å, α = 73.050(10)°, β = 88.870(10)°, γ = 66.060(10)°, V = 1353.62(16) Å3, Z = 2, Rgt(F) = 0.0578, wRref(F2) = 0.1875, T = 293(2) K.

CCDC no.: 1977339

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:Reddish-brown polyhedron
Size:0.30 × 0.25 × 0.08 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:4.8 mm−1
Diffractometer, scan mode:KappaCCD, ω
θmax, completeness:26.5°, 90%
N(hkl)measured, N(hkl)unique, Rint:4853, 4853,
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 4166
N(param)refined:258
Programs:Diamond [1], CAD-4 [2], SHELX [3], [4]
Table 2:

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

AtomxyzUiso*/Ueq
Cs0.36854(8)0.42183(7)−0.21734(8)0.0538(3)
I10.5000000.0000000.5000000.0446(3)
I20.23561(9)0.11040(10)0.36787(8)0.0626(3)
I30.0000000.0000000.0000000.0441(3)
I4−0.21930(11)0.19988(12)−0.17295(10)0.0860(4)
O10.1124(8)0.4182(8)−0.1014(7)0.0480(19)
O20.3444(8)0.1692(8)−0.0486(7)0.0474(19)
O30.3301(8)0.1992(8)−0.2842(7)0.050(2)
O40.0954(9)0.4446(8)−0.3370(7)0.054(2)
O50.3400(10)0.6302(9)−0.4481(9)0.063(2)
O60.1620(10)0.7223(9)−0.2905(8)0.062(2)
O70.3787(11)0.6442(11)−0.1242(8)0.067(3)
O80.5586(11)0.5675(10)−0.2827(9)0.069(3)
C10.1054(13)0.2993(12)−0.0333(11)0.052(3)
H1A0.0749010.259715−0.0798150.062*
H1B0.0410170.3188700.0212130.062*
C20.2463(14)0.2037(13)0.0270(9)0.052(3)
H2A0.2750280.2441740.0738050.062*
H2B0.2419630.1234260.0760130.062*
C30.3434(13)0.0667(11)−0.0891(11)0.052(3)
H3A0.2506380.076411−0.1005180.062*
H3B0.395983−0.019724−0.0346730.062*
C40.4050(13)0.0770(13)−0.1989(12)0.058(3)
H4A0.4974680.067638−0.1861080.070*
H4B0.4098310.004227−0.2249640.070*
C50.2051(14)0.2103(15)−0.3291(12)0.060(3)
H5A0.1535900.185955−0.2688900.072*
H5B0.2215670.151826−0.3750100.072*
C60.1271(15)0.3542(16)−0.4002(12)0.065(4)
H6A0.1810190.376693−0.4590300.078*
H6B0.0430110.364145−0.4361580.078*
C7−0.0169(12)0.4564(14)−0.2771(11)0.057(3)
H7A−0.0212050.370668−0.2493840.068*
H7B−0.0999160.518725−0.3263780.068*
C8−0.0058(13)0.5038(14)−0.1811(12)0.060(3)
H8A−0.0050370.590928−0.2103380.072*
H8B−0.0863630.514050−0.1420230.072*
C90.2027(15)0.7218(16)−0.4755(11)0.066(4)
H9A0.1466840.673581−0.4732310.079*
H9B0.1906300.779823−0.5520910.079*
C100.1542(15)0.8040(15)−0.4006(14)0.072(4)
H10A0.2097400.852401−0.4014700.086*
H10B0.0606020.868192−0.4265280.086*
C110.1510(17)0.7807(19)−0.2026(17)0.081(5)
H11A0.1221010.731085−0.1381360.097*
H11B0.0804140.870939−0.2281180.097*
C120.274(2)0.7846(19)−0.167(2)0.099(6)
H12A0.2592770.826174−0.1077560.118*
H12B0.3044440.835456−0.2295500.118*
C130.5069(18)0.6462(16)−0.1243(12)0.071(4)
H13A0.5709390.563908−0.0709460.085*
H13B0.5021890.718707−0.0978170.085*
C140.5616(16)0.6618(17)−0.2357(14)0.070(4)
H14A0.5074310.750441−0.2862550.084*
H14B0.6547020.651959−0.2263030.084*
C150.5652(16)0.6016(17)−0.4012(14)0.071(4)
H15A0.6052750.519782−0.4207830.085*
H15B0.6269410.644803−0.4186900.085*
C160.4349(15)0.6893(16)−0.4744(12)0.067(4)
H16A0.3978610.775826−0.4627350.081*
H16B0.4506440.701547−0.5528870.081*

Source of material

Iodine (>=99.0%), caesium iodide, 1,4,7,10-tetraoxacyclododecan (12-crown-4) and ethanol were received from Sigma-Aldrich Chemical Co. (St. Louis, MO, USA). All the used reagents were of analytical grade and were used as purchased without further purification. The Raman spectra were measured using a Jobin Yvon U 100 spectrometer from Spectra-Physics (Argon laser at 514.5 nm). The title compound was synthesized by dissolving 0.16 g (0.63 mmol) of CsI and 0.16 g (0.63 mmol) I2 in 10 mL ethanol/10 ml methanol mixture at room temperature. Then 0.2 mL (1.26 mmol) 12-crown-4 is added under continuous stirring. The clear solution gives after 4 days at room temperature reddish-brown crystals of [Cs(12-crown-4)2]I3.

Experimental details

A reddish-brown single crystal was selected from the mother liquor and transferred to the Kappa CCD diffractometer [2]. The measurement was done at 293 K. The structure solution, refinement and further calculations were done with the programs SHELXL [3], [4]. The data collection was undertaken several years ago using a point detector. Unfortunately, the measured section produced a completeness of only ∼90%. Nevertheless during the refinement no correlation effects were detected.

Comment

Polyiodides are interesting compounds with a rich chemistry and many applications, especially as antimicrobial agents [5]. Previously, polyiodides and iodine were incorporated into cellulose membranes [6], polymer foams [7], silicon membranes [8] and wound dressing applications in form of nanoparticles [9] due to their microbicidal actions. Only few examples of polyiodides with 12-crown-4 and alkalimetal cations have been reported previously [10], [11]. In these compounds, the crown ether and the metal cation stabilize the polyiodide structures by forming sandwich structures [10], [11]. The long time stability of a polyiodide is important for its use as antimicrobial agent to increase its long term effectiveness, durability and reduce the iodine sublimation [6]. Triiodides seem to be the most interesting class of polyiodides due to their stability. There are hundreds of examples of triiodides in the literature [12]. Halogen bonding is a major factor of stability in polyiodides within three-center-systems [13] and their resulting antimicrobial activity [14].

The asymmetric unit of the title structure contains two crystallographically independent, isolated, symmetrical, linear triiodide anions I3 with crystallographic inversion symmetry. The bond lengths and angles within these structures are in expected ranges and are another example of a three-center-system [I-I-I] with halogen bonding like the previously reported triiodies in our group [14]. This three-center-system is an indicator for possible antimicrobial activities. As reported before [14], the complex compound interacts with the cell membrane of the microorganism due to electrostatic interactions and is deformed. This results in gradual free molecular iodine release from the triiodide-unit. Iodine directly attacks the pathogens by destroying their cell membrane and causing protein oxidation [5], [9], [14]. There is only one strong Raman stretching vibration at 108 cm−1 for the triiodide, which is available in our previous compounds [14] and in the very recently reported cyclic I10−2 anion [15]. The later showed another strong line at 172 cm−1 due to weak connections to two neighboring halogen bond donors. Usually, covalent I2 is detected at around 180 cm−1 [13], [15]. All geometric parameters of the cationic cesium bis(12-crown-4) complex are in the expected ranges [16].

Acknowledgements

We are thankful to University of Cologne, Germany and Ajman University, Ajman, UAE for providing us with the funds. Funding for this research was provided by: Universität zu Köln (Graduiertenkolleg of the University of Cologne “Classification of phase transitions in crystalline compounds on account of structural and physical anomalies” to Z. Edis); Ajman University-IRG Research Grant (2018-A-PH-01). We are very grateful to Guido J. Reiss for his help managing the structural data.

References

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Received: 2019-12-15
Accepted: 2020-01-14
Published Online: 2020-02-12
Published in Print: 2020-04-28

©2020 Samir Haj Bloukh 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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  62. Crystal structure of dichloridobis(4-chlorophenyl-κC1)(1,10-phenanthroline-κ2N,N′)tin(IV), C24H16Cl4N2Sn
  63. Crystal structure of bis{bromido-triphenyltin(IV)}(μ2-[4,4′-bipyridine]1,1′-dioxide-κ2O:O′), C46H38Br2N2O2Sn2
  64. Crystal structure of 2-(5-chloro-quinolin-8-yloxy)-N-quinolin-8-yl-acetamide, C20H14N3O2Cl
  65. Crystal structure of bis(N-(1-(3-ethylpyrazin-2-yl)ethylidene)-3-hydroxy-2-naphthohydrazonato-κ3N,N′,O)cobalt(II) — dimethylformamide (1/1), C41H41N9O5Co
  66. Crystal structure of bis[2-(1-(3-ethylpyrazin-2-yl)ethylidene)-1-tosylhydrazin-1-ido-κ3-N,N′,O]copper(II), C30H34N8O4S2Cu
  67. Crystal structure of (2-p-tolylpyrimidine-κ2C,N)(triphenylphosphane-κP) palladium(II), C29H24ClN2PPd
  68. Halogen bonding in crystal structure of bis(1,4,7,10-tetraoxacyclododecane-κ4O,O′,O′′,O′′′)cesium triiodide, C16H32CsI3O8
  69. The synthesis and crystal structure of N-(3-cyano-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-4-(trifluoromethylsulfinyl)-1H-pyrazol-5-yl)-2-phenylacetamide, C20H10N4Cl2F6O2S
  70. The crystal structure of 4-(trifluoromethyl)nicotinic acid, C7H4F3NO2
  71. Crystal structure of 3-(2-methylbenzyl)thiazolidin-2-one, C11H13ONS
  72. The crystal structure of 2,2,2-trifluoro-1-(isoquinolin-1-yl)ethane-1,1-diol, C11H8F3NO2
  73. The crystal structure of 3-bromoisonicotinic acid, C6H4BrNO2
  74. The crystal structure of 5-nitropicolinic acid monohydrate, C6H6N2O5
  75. The crystal structure of 3-(4-hydroxybenzyl)-1,5-dioxaspiro[5.5]undecane-2,4-dione, C16H18O5
  76. Crystal structure of [[Mo3Se7(S2CNEt2)3]2(μ-Se)] ⋅ 2(C6H4Cl2), C42H68Cl4Mo6N6S12Se15
  77. Crystal structure of (E)-4-hydroxy-3-((5-phenyl-1,3,4-oxadiazol-2-yl)thio)pent-3-en-2-one, C13H12N2O3S
  78. The crystal structure of (2,3-dioxo-5,6:13,14-dibenzo-9,10-benzo-1,4,8,11-7, 11-diene-κ4N,N′,N′′,N′′′)-nickel(II), Ni(C22H14N4O2)
  79. Crystal structure of 3-(1-benzyl-2-ethyl-4-nitro-1H-imidazol-5-ylthio)-propanoic acid, C15H17N3O4S
  80. The crystal structure of dichlorobis(2-(dicyclohexylphosphino)-2′,4′,6′-tri-i-propyl-1,1′-biphenyl) palladium(II)-dichloroform, C68H100Cl8P2Pd
  81. Crystal structure and antimicrobial properties of (1,4,7,10-tetraoxacyclododecane-κ4O,O′,O′′,O′′′)cesium(I) pentaiodide, C16H32CsI5O8
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