metal-organic compounds
of bis(quinolin-1-ium) tetrachloridoferrate(III) chloride
aFaculté des Sciences Exactes et Informatique, Département de Chimie, Université de Jijel, 18000 Jijel, Algeria, bLaboratoire des Structures, Propriétés et Interactions InterAtomiques, Université de Khenchela, 40000 Khenchela, Algeria, cUnité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Constantine 1, 25000 , Algeria, and dDépartement Sciences de la Matière, Université Oum El Bouaghi, Algeria
*Correspondence e-mail: karim.bouchouit@laposte.net
The 9H8N)[FeCl4]Cl, comprises a tetrahedral tetrachloridoferrate(III) anion, [FeCl4]−, a Cl− anion and two quinolinium cations. There are N—H⋯Cl hydrogen-bonding interactions between the protonated N atoms of the quinolinium cations and the chloride anion, which together with π–π stacking between adjacent quinolinium rings [centroid-to-centroid distances between C6 and C5N rings in adjacent stacked quinolinium cations of 3.609 (2) and 3.802 (2) Å] serve to hold the structure together.
of the title hybrid compound, (CKeywords: crystal structure; hybrid compounds; tetrachloridoferrate(III) anion; N—H⋯Cl hydrogen bonding.
CCDC reference: 1443665
1. Related literature
For non-linear optical properties of hybrid compounds, see: Bouchouit et al. (2008, 2010, 2015); Jayalakshmi & Kumar (2006); Sankar et al. (2007). For similar structures containing the [FeCl4]− anion, see: Khadri et al. (2013); Chen & Huang (2010); Prommon et al. (2012); Kruszynski et al. (2007).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: APEX2 (Bruker, 2011); cell SAINT (Bruker, 2011); data reduction: SAINT; program(s) used to solve structure: SIR2002 (Burla et al., 2005); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg & Berndt, 2001); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supporting information
CCDC reference: 1443665
https://doi.org/10.1107/S2056989015024548/cq2018sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989015024548/cq2018Isup2.hkl
Quinoline, C9H7N, (0.2 mmol) and iron (III) chloride, FeCl3, (0.1 mmol) were dissolved in a mixture of water (10 ml) and acetonitrile (10 ml) at ambient temperature over a period of approximately 30 minutes. After this period, a brown precipitate appeared which was removed by filtration. The filtrate was then left at room temperature until brown crystals appeared.
All non-H atoms were refined with anisotropic atomic displacement parameters. The remaining H atoms were localized on Fourier maps but introduced in calculated positions and treated as riding on their parent atom (C and N) with C-H = 0.93 Å and N-H = 0.86 Å with Uiso(H) = 1.2 Ueq
Hybrid compounds are one of the important categories of materials. They have received much attention in research areas including nonlinear optics, second harmonic generation (SHG), third harmonic generation (THG) and optical switching [Bouchouit et al. (2008); Bouchouit, et al. (2010); Jayalakshmi et al. (2006); Sankar et al. (2007); Bouchouit et al. (2015)]. A considerable number of hybrid organic/inorganic compounds have been extensively studied for their promising properties. Crystals of many of these materials can be grown from aqueous solution (Khadri et al. (2013); Chen et al. (2010); Prommon et al. (2012); Kruszynski et al. (2007)]. In the present work, a mixture of water and acetonitrile is used as solvent for the reaction of quinoline with iron (III) chloride and leads to the generation of crystals of bis(quinolinium)tetrachloroferrate(III) chloride.
The π–π interactions. The centroid to centroid distances between C6 and C5N rings in adjacent stacked quinolinium cations are 3.609 (2) and 3.802 (2)Å.
of the title hybrid compound consists of a tetrachloroferrate anion, (FeCl4)-, a chloride Cl- anion and two quinolinium cations, (C9H8N)+ (Fig. 1). The iron atom lies at the centre of a regular tetrahedron and it is coordinated to four Cl atoms with Fe—Cl bond lengths in the range 2.1862 (10) to 2.2013 (10)Å. The lengths of the C–C and C-N bonds in the two independent quinolinium cations are comparable to the related distances found in the literature. The quinolium cations stack on top of each other, held together byThe projection of the structure onto the a-c plane (Fig. 2) shows the N—H···Cl hydrogen bonding interactions between the N—H groups of the quinolium cations and the Cl- anions which, together with the π–π interactions, serve to stabilise the structure.
For non-linear optical properties of hybrid compounds, see: Bouchouit et al. (2008, 2010, 2015); Jayalakshmi & Kumar (2006); Sankar et al. (2007). For similar structures containing the [FeCl4]- anion, see: Khadri et al. (2013); Chen & Huang (2010); Prommon et al. (2012); Kruszynski et al. (2007).
Data collection: APEX2 (Bruker, 2011); cell
SAINT (Bruker, 2011); data reduction: SAINT (Bruker, 2011); program(s) used to solve structure: SIR2002 (Burla et al., 2005); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg & Berndt, 2001); software used to prepare material for publication: WinGX (Farrugia, 2012).(C9H8N)2[FeCl4]Cl | Z = 2 |
Mr = 493.43 | F(000) = 498 |
Triclinic, P1 | Dx = 1.549 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.424 (2) Å | Cell parameters from 2434 reflections |
b = 10.435 (3) Å | θ = 2.5–24.9° |
c = 13.022 (4) Å | µ = 1.35 mm−1 |
α = 109.626 (18)° | T = 295 K |
β = 100.197 (19)° | Prism, brown |
γ = 90.893 (19)° | 0.12 × 0.05 × 0.04 mm |
V = 1057.7 (5) Å3 |
Bruker APEXII diffractometer | 2927 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.043 |
CCD rotation images, thin slices scans | θmax = 25.1°, θmin = 3.1° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2002) | h = −10→9 |
Tmin = 0.899, Tmax = 0.922 | k = −12→12 |
9378 measured reflections | l = −15→15 |
3738 independent reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.033 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.074 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0268P)2 + 0.0315P] where P = (Fo2 + 2Fc2)/3 |
3738 reflections | (Δ/σ)max = 0.001 |
235 parameters | Δρmax = 0.29 e Å−3 |
0 restraints | Δρmin = −0.31 e Å−3 |
(C9H8N)2[FeCl4]Cl | γ = 90.893 (19)° |
Mr = 493.43 | V = 1057.7 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.424 (2) Å | Mo Kα radiation |
b = 10.435 (3) Å | µ = 1.35 mm−1 |
c = 13.022 (4) Å | T = 295 K |
α = 109.626 (18)° | 0.12 × 0.05 × 0.04 mm |
β = 100.197 (19)° |
Bruker APEXII diffractometer | 3738 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2002) | 2927 reflections with I > 2σ(I) |
Tmin = 0.899, Tmax = 0.922 | Rint = 0.043 |
9378 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.074 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.29 e Å−3 |
3738 reflections | Δρmin = −0.31 e Å−3 |
235 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
Fe1 | 0.11617 (5) | −0.18619 (4) | 0.64487 (3) | 0.02192 (12) | |
Cl4 | 0.29503 (9) | −0.33664 (7) | 0.60671 (6) | 0.03500 (19) | |
Cl3 | −0.12466 (8) | −0.28089 (7) | 0.55023 (6) | 0.02990 (18) | |
Cl1 | 0.17477 (8) | −0.00943 (7) | 0.59992 (6) | 0.02792 (17) | |
Cl5 | 0.40919 (9) | 0.25683 (8) | 1.05985 (6) | 0.0361 (2) | |
Cl2 | 0.11071 (11) | −0.11756 (8) | 0.82228 (6) | 0.0407 (2) | |
N1A | 0.8158 (3) | 0.5396 (2) | 0.83436 (18) | 0.0227 (5) | |
H1A | 0.7565 | 0.5992 | 0.8689 | 0.027* | |
N1B | 0.4922 (3) | 0.1123 (2) | 0.83299 (18) | 0.0263 (5) | |
H1B | 0.4486 | 0.1429 | 0.8906 | 0.032* | |
C4A | 0.9484 (3) | 0.3350 (3) | 0.8123 (2) | 0.0209 (6) | |
C3B | 0.6376 (3) | 0.0137 (3) | 0.6543 (2) | 0.0286 (7) | |
H3B | 0.689 | −0.0202 | 0.5941 | 0.034* | |
C3A | 1.0018 (3) | 0.3528 (3) | 0.7215 (2) | 0.0256 (6) | |
H3A | 1.0639 | 0.2886 | 0.6816 | 0.031* | |
C8B | 0.4286 (3) | 0.3164 (3) | 0.7925 (2) | 0.0269 (6) | |
H8B | 0.3793 | 0.348 | 0.8539 | 0.032* | |
C9A | 0.8504 (3) | 0.4318 (3) | 0.8695 (2) | 0.0214 (6) | |
C2B | 0.6258 (3) | −0.0606 (3) | 0.7210 (2) | 0.0317 (7) | |
H2B | 0.6671 | −0.1457 | 0.7061 | 0.038* | |
C6A | 0.9269 (3) | 0.2136 (3) | 0.9376 (2) | 0.0312 (7) | |
H6A | 0.9539 | 0.1416 | 0.9625 | 0.037* | |
C7A | 0.8267 (3) | 0.3101 (3) | 0.9917 (2) | 0.0282 (7) | |
H7A | 0.7859 | 0.2996 | 1.0505 | 0.034* | |
C7B | 0.4349 (3) | 0.3917 (3) | 0.7256 (2) | 0.0310 (7) | |
H7B | 0.3901 | 0.4754 | 0.7418 | 0.037* | |
C4B | 0.5727 (3) | 0.1417 (3) | 0.6753 (2) | 0.0211 (6) | |
C9B | 0.4972 (3) | 0.1909 (3) | 0.7676 (2) | 0.0217 (6) | |
C5A | 0.9848 (3) | 0.2239 (3) | 0.8496 (2) | 0.0277 (6) | |
H5A | 1.0486 | 0.1579 | 0.8137 | 0.033* | |
C1B | 0.5514 (3) | −0.0082 (3) | 0.8115 (2) | 0.0319 (7) | |
H1B1 | 0.5431 | −0.0585 | 0.8576 | 0.038* | |
C5B | 0.5761 (3) | 0.2235 (3) | 0.6085 (2) | 0.0274 (7) | |
H5B | 0.6258 | 0.1942 | 0.5471 | 0.033* | |
C8A | 0.7892 (3) | 0.4185 (3) | 0.9588 (2) | 0.0244 (6) | |
H8A | 0.724 | 0.4826 | 0.9951 | 0.029* | |
C1A | 0.8687 (3) | 0.5569 (3) | 0.7502 (2) | 0.0274 (7) | |
H1A1 | 0.8423 | 0.6326 | 0.7302 | 0.033* | |
C2A | 0.9637 (3) | 0.4630 (3) | 0.6912 (2) | 0.0282 (7) | |
H2A | 1.0007 | 0.4752 | 0.6317 | 0.034* | |
C6B | 0.5079 (3) | 0.3445 (3) | 0.6328 (2) | 0.0309 (7) | |
H6B | 0.5097 | 0.3965 | 0.5873 | 0.037* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Fe1 | 0.0269 (2) | 0.0194 (2) | 0.0219 (2) | 0.00239 (16) | 0.00657 (17) | 0.00933 (17) |
Cl4 | 0.0363 (4) | 0.0294 (4) | 0.0470 (5) | 0.0126 (3) | 0.0145 (4) | 0.0193 (4) |
Cl3 | 0.0271 (4) | 0.0295 (4) | 0.0319 (4) | −0.0008 (3) | 0.0076 (3) | 0.0082 (3) |
Cl1 | 0.0317 (4) | 0.0243 (4) | 0.0322 (4) | 0.0010 (3) | 0.0065 (3) | 0.0154 (3) |
Cl5 | 0.0490 (5) | 0.0359 (4) | 0.0313 (4) | 0.0214 (4) | 0.0196 (4) | 0.0149 (3) |
Cl2 | 0.0691 (6) | 0.0341 (4) | 0.0230 (4) | 0.0088 (4) | 0.0136 (4) | 0.0126 (3) |
N1A | 0.0248 (12) | 0.0170 (12) | 0.0259 (13) | 0.0046 (9) | 0.0097 (10) | 0.0043 (10) |
N1B | 0.0307 (13) | 0.0301 (14) | 0.0209 (12) | 0.0049 (11) | 0.0092 (11) | 0.0101 (11) |
C4A | 0.0192 (13) | 0.0188 (14) | 0.0216 (14) | 0.0011 (11) | 0.0015 (11) | 0.0042 (12) |
C3B | 0.0278 (15) | 0.0293 (17) | 0.0266 (16) | 0.0024 (13) | 0.0097 (13) | 0.0046 (13) |
C3A | 0.0248 (15) | 0.0246 (16) | 0.0260 (15) | 0.0023 (12) | 0.0104 (12) | 0.0043 (13) |
C8B | 0.0255 (15) | 0.0257 (16) | 0.0272 (16) | 0.0052 (12) | 0.0086 (13) | 0.0041 (13) |
C9A | 0.0180 (13) | 0.0197 (15) | 0.0228 (14) | −0.0033 (11) | 0.0016 (12) | 0.0041 (12) |
C2B | 0.0358 (17) | 0.0210 (16) | 0.0387 (18) | 0.0083 (13) | 0.0113 (15) | 0.0085 (14) |
C6A | 0.0361 (17) | 0.0306 (17) | 0.0308 (17) | 0.0038 (14) | 0.0027 (14) | 0.0175 (14) |
C7A | 0.0302 (16) | 0.0335 (17) | 0.0215 (15) | −0.0024 (13) | 0.0030 (13) | 0.0116 (13) |
C7B | 0.0296 (16) | 0.0240 (16) | 0.0372 (18) | 0.0035 (13) | 0.0004 (14) | 0.0108 (14) |
C4B | 0.0190 (14) | 0.0234 (15) | 0.0186 (14) | −0.0006 (11) | 0.0030 (11) | 0.0048 (12) |
C9B | 0.0186 (14) | 0.0222 (15) | 0.0217 (14) | −0.0022 (11) | 0.0011 (12) | 0.0059 (12) |
C5A | 0.0278 (15) | 0.0238 (16) | 0.0315 (16) | 0.0070 (12) | 0.0041 (13) | 0.0101 (13) |
C1B | 0.0357 (17) | 0.0297 (17) | 0.0359 (18) | 0.0046 (14) | 0.0097 (14) | 0.0170 (14) |
C5B | 0.0268 (15) | 0.0330 (17) | 0.0223 (15) | −0.0012 (13) | 0.0042 (13) | 0.0099 (13) |
C8A | 0.0236 (14) | 0.0273 (16) | 0.0197 (14) | 0.0036 (12) | 0.0059 (12) | 0.0039 (12) |
C1A | 0.0300 (16) | 0.0217 (15) | 0.0345 (17) | −0.0011 (12) | 0.0081 (14) | 0.0138 (13) |
C2A | 0.0302 (16) | 0.0298 (17) | 0.0296 (16) | −0.0002 (13) | 0.0135 (13) | 0.0127 (14) |
C6B | 0.0298 (16) | 0.0327 (18) | 0.0319 (17) | −0.0022 (13) | −0.0007 (14) | 0.0169 (14) |
Fe1—Cl2 | 2.1862 (10) | C9A—C8A | 1.399 (4) |
Fe1—Cl1 | 2.1880 (9) | C2B—C1B | 1.386 (4) |
Fe1—Cl4 | 2.1901 (10) | C2B—H2B | 0.93 |
Fe1—Cl3 | 2.2013 (10) | C6A—C5A | 1.356 (4) |
N1A—C1A | 1.317 (3) | C6A—C7A | 1.408 (4) |
N1A—C9A | 1.367 (3) | C6A—H6A | 0.93 |
N1A—H1A | 0.86 | C7A—C8A | 1.360 (4) |
N1B—C1B | 1.319 (4) | C7A—H7A | 0.93 |
N1B—C9B | 1.370 (3) | C7B—C6B | 1.398 (4) |
N1B—H1B | 0.86 | C7B—H7B | 0.93 |
C4A—C3A | 1.404 (4) | C4B—C9B | 1.407 (4) |
C4A—C9A | 1.412 (4) | C4B—C5B | 1.411 (4) |
C4A—C5A | 1.419 (4) | C5A—H5A | 0.93 |
C3B—C2B | 1.359 (4) | C1B—H1B1 | 0.93 |
C3B—C4B | 1.410 (4) | C5B—C6B | 1.358 (4) |
C3B—H3B | 0.93 | C5B—H5B | 0.93 |
C3A—C2A | 1.362 (4) | C8A—H8A | 0.93 |
C3A—H3A | 0.93 | C1A—C2A | 1.388 (4) |
C8B—C7B | 1.361 (4) | C1A—H1A1 | 0.93 |
C8B—C9B | 1.400 (4) | C2A—H2A | 0.93 |
C8B—H8B | 0.93 | C6B—H6B | 0.93 |
Cl2—Fe1—Cl1 | 108.97 (4) | C8A—C7A—C6A | 120.6 (3) |
Cl2—Fe1—Cl4 | 110.06 (4) | C8A—C7A—H7A | 119.7 |
Cl1—Fe1—Cl4 | 110.70 (4) | C6A—C7A—H7A | 119.7 |
Cl2—Fe1—Cl3 | 108.87 (4) | C8B—C7B—C6B | 120.7 (3) |
Cl1—Fe1—Cl3 | 109.03 (4) | C8B—C7B—H7B | 119.6 |
Cl4—Fe1—Cl3 | 109.18 (4) | C6B—C7B—H7B | 119.6 |
C1A—N1A—C9A | 123.3 (2) | C9B—C4B—C3B | 118.3 (2) |
C1A—N1A—H1A | 118.3 | C9B—C4B—C5B | 117.5 (2) |
C9A—N1A—H1A | 118.3 | C3B—C4B—C5B | 124.2 (2) |
C1B—N1B—C9B | 122.9 (2) | N1B—C9B—C8B | 120.6 (2) |
C1B—N1B—H1B | 118.5 | N1B—C9B—C4B | 118.2 (2) |
C9B—N1B—H1B | 118.5 | C8B—C9B—C4B | 121.2 (2) |
C3A—C4A—C9A | 118.6 (2) | C6A—C5A—C4A | 120.1 (3) |
C3A—C4A—C5A | 123.9 (3) | C6A—C5A—H5A | 119.9 |
C9A—C4A—C5A | 117.6 (2) | C4A—C5A—H5A | 119.9 |
C2B—C3B—C4B | 120.7 (3) | N1B—C1B—C2B | 120.6 (3) |
C2B—C3B—H3B | 119.7 | N1B—C1B—H1B1 | 119.7 |
C4B—C3B—H3B | 119.7 | C2B—C1B—H1B1 | 119.7 |
C2A—C3A—C4A | 120.6 (3) | C6B—C5B—C4B | 120.8 (3) |
C2A—C3A—H3A | 119.7 | C6B—C5B—H5B | 119.6 |
C4A—C3A—H3A | 119.7 | C4B—C5B—H5B | 119.6 |
C7B—C8B—C9B | 119.1 (3) | C7A—C8A—C9A | 118.9 (3) |
C7B—C8B—H8B | 120.4 | C7A—C8A—H8A | 120.5 |
C9B—C8B—H8B | 120.4 | C9A—C8A—H8A | 120.5 |
N1A—C9A—C8A | 120.6 (2) | N1A—C1A—C2A | 120.5 (3) |
N1A—C9A—C4A | 117.8 (2) | N1A—C1A—H1A1 | 119.7 |
C8A—C9A—C4A | 121.6 (2) | C2A—C1A—H1A1 | 119.7 |
C3B—C2B—C1B | 119.3 (3) | C3A—C2A—C1A | 119.2 (3) |
C3B—C2B—H2B | 120.4 | C3A—C2A—H2A | 120.4 |
C1B—C2B—H2B | 120.4 | C1A—C2A—H2A | 120.4 |
C5A—C6A—C7A | 121.1 (3) | C5B—C6B—C7B | 120.6 (3) |
C5A—C6A—H6A | 119.4 | C5B—C6B—H6B | 119.7 |
C7A—C6A—H6A | 119.4 | C7B—C6B—H6B | 119.7 |
C9A—C4A—C3A—C2A | 1.8 (4) | C5B—C4B—C9B—N1B | 179.7 (2) |
C5A—C4A—C3A—C2A | −179.2 (3) | C3B—C4B—C9B—C8B | −179.3 (2) |
C1A—N1A—C9A—C8A | −179.4 (2) | C5B—C4B—C9B—C8B | −0.2 (4) |
C1A—N1A—C9A—C4A | 0.2 (4) | C7A—C6A—C5A—C4A | 1.6 (4) |
C3A—C4A—C9A—N1A | −1.4 (4) | C3A—C4A—C5A—C6A | −179.3 (3) |
C5A—C4A—C9A—N1A | 179.6 (2) | C9A—C4A—C5A—C6A | −0.3 (4) |
C3A—C4A—C9A—C8A | 178.2 (2) | C9B—N1B—C1B—C2B | 1.3 (4) |
C5A—C4A—C9A—C8A | −0.8 (4) | C3B—C2B—C1B—N1B | 0.1 (4) |
C4B—C3B—C2B—C1B | −1.1 (4) | C9B—C4B—C5B—C6B | −0.4 (4) |
C5A—C6A—C7A—C8A | −1.8 (4) | C3B—C4B—C5B—C6B | 178.6 (3) |
C9B—C8B—C7B—C6B | 0.4 (4) | C6A—C7A—C8A—C9A | 0.7 (4) |
C2B—C3B—C4B—C9B | 0.7 (4) | N1A—C9A—C8A—C7A | −179.8 (2) |
C2B—C3B—C4B—C5B | −178.3 (3) | C4A—C9A—C8A—C7A | 0.6 (4) |
C1B—N1B—C9B—C8B | 178.2 (3) | C9A—N1A—C1A—C2A | 0.6 (4) |
C1B—N1B—C9B—C4B | −1.7 (4) | C4A—C3A—C2A—C1A | −1.0 (4) |
C7B—C8B—C9B—N1B | −179.7 (2) | N1A—C1A—C2A—C3A | −0.1 (4) |
C7B—C8B—C9B—C4B | 0.2 (4) | C4B—C5B—C6B—C7B | 1.0 (4) |
C3B—C4B—C9B—N1B | 0.6 (4) | C8B—C7B—C6B—C5B | −1.0 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1A—H1A···Cl5i | 0.86 | 2.16 | 3.014 (3) | 174 |
N1B—H1B···Cl5 | 0.86 | 2.21 | 3.043 (3) | 163 |
Symmetry code: (i) −x+1, −y+1, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1A—H1A···Cl5i | 0.8600 | 2.1600 | 3.014 (3) | 174.00 |
N1B—H1B···Cl5 | 0.8600 | 2.2100 | 3.043 (3) | 163.00 |
Symmetry code: (i) −x+1, −y+1, −z+2. |
Acknowledgements
MESRS and DG–RSDT (Ministére de l'Enseignement Supérieur et de la Recherche Scientifique et la Direction Générale de la Recherche – Algérie) are thanked for financial support.
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Hybrid compounds are one of the important categories of materials. They have received much attention in research areas including nonlinear optics, second harmonic generation (SHG), third harmonic generation (THG) and optical switching [Bouchouit et al. (2008); Bouchouit, et al. (2010); Jayalakshmi et al. (2006); Sankar et al. (2007); Bouchouit et al. (2015)]. A considerable number of hybrid organic/inorganic compounds have been extensively studied for their promising properties. Crystals of many of these materials can be grown from aqueous solution (Khadri et al. (2013); Chen et al. (2010); Prommon et al. (2012); Kruszynski et al. (2007)]. In the present work, a mixture of water and acetonitrile is used as solvent for the reaction of quinoline with iron (III) chloride and leads to the generation of crystals of bis(quinolinium)tetrachloroferrate(III) chloride.
The asymmetric unit of the title hybrid compound consists of a tetrachloroferrate anion, (FeCl4)-, a chloride Cl- anion and two quinolinium cations, (C9H8N)+ (Fig. 1). The iron atom lies at the centre of a regular tetrahedron and it is coordinated to four Cl atoms with Fe—Cl bond lengths in the range 2.1862 (10) to 2.2013 (10)Å. The lengths of the C–C and C-N bonds in the two independent quinolinium cations are comparable to the related distances found in the literature. The quinolium cations stack on top of each other, held together by π–π interactions. The centroid to centroid distances between C6 and C5N rings in adjacent stacked quinolinium cations are 3.609 (2) and 3.802 (2)Å.
The projection of the structure onto the a-c plane (Fig. 2) shows the N—H···Cl hydrogen bonding interactions between the N—H groups of the quinolium cations and the Cl- anions which, together with the π–π interactions, serve to stabilise the structure.