metal-organic compounds
Tris(N,N-dimethylanilinium) tri-μ-bromido-bis[tribromidoantimonate(III)]
aLaboratoire de Génie des Matériaux et Environnement, École Nationale d'Ingénieurs de Sfax, Université de Sfax, BP 1173, Sfax, Tunisia, and bService commun d'analyse par diffraction des rayons X, Universite de Brest, 6 avenue Victor Le Gorgeu, CS 93837, F-29238 Brest Cedex 3, France
*Correspondence e-mail: kharrat_houda@yahoo.fr
In the title compound, (C8H12N)3[Sb2Br9], two of the three unique N,N-dimethyanilinium cations exhibit flip–flop disorder with an occupancy ratio of 0.58 (1):0.42 (1). N—H⋯Br hydrogen bonds link the organic cations and bioctahedral face-sharing anions into a three-dimensional network.
Related literature
For related hybrid organic antimonate(III) halogenide crystal structures, see: Bujak & Angel (2005); Chaabouni et al. (1997, 1998). For dielectric and phase transitions properties, see: Chaabouni & Kamoun (1998).
Experimental
Crystal data
|
|
|
Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell CrysAlis RED (Oxford Diffraction, 2009); data reduction: CrysAlis RED; program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Berndt, 1999) and Mercury (Macrae et al., 2008); software used to prepare material for publication: WinGX (Farrugia, 2012) and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536813014335/vn2071sup1.cif
contains datablocks global, I. DOI:Supporting information file. DOI: https://doi.org/10.1107/S1600536813014335/vn2071Isup2.cdx
Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536813014335/vn2071Isup3.hkl
Crystals of (C8H12N)3[Sb2Br9] were obtained by dissolving antimony (III) oxide Sb2O3 and N,N-dimethylanilinium bromide C8H12NBr (molar ratio 3:1) in 50 ml of a solution of HBr (24%). After a slow solvent evaporation prismatic yellow crystals suitable for X-ray analysis were obtained. They were washed with diethyl ether and dried over P2O5.
The positions of the two disordered N,N-dimethylanilinium cations were initially refined with different occupancy ratios, but the
converged extremely slowly when using anisotropic atomic displacement parameters. Since the refined occupancy factors for the two cations were nearly equal upon refining with isotropic atomic displacement parameters it was decided to use a single occupancy factor for the final anisotropic SADI and EADP restraints were used. All H atoms were geometrically positioned and treated as riding on their parent atoms, with C—H = 0.93 Å for the phenyl, 0.96 Å for the methyl and N—H = 0.91 Å with Uiso(H) = 1.2 Ueq(C-phenyl, N) or 1.5 Ueq(C-methyl).This study is a part of our investigations on the syntheses, structures and phase transitions of halogenoantimonate (III) anions in combination with organic cations (Bujak & Angel, 2005; Chaabouni et al., 1997; Chaabouni et al., 1998; Chaabouni & Kamoun, 1998). In these compounds the Sb atom shows a tendency toward distorted octahedral coordination with some rather long Sb—X bonds, which is attributed to the aspherical distribution of the lone pair electrons at Sb(III). The π-π interactions between phenyl rings may be neglected (> 4 Å); in fact the shortest distances between the centroids of the rings are: Cg(1)···Cg(1)i = 5.521 (4) Å,Cg(2)···Cg(2)ii = 4.227 (15) Å, Cg(2)···Cg(3)ii = 4.214 (19) Å and Cg(3)···Cg(3)ii = 4.26 (2) Å [Cg(1), Cg(2) and Cg(3) are the centroids of the C1···C6, C9···C14 and C17···C22 rings respectively; symmetry codes: (i) 1 - x, -y, -z; (ii) -x, 1 - y, 1 - z]. The major contributions to the cohesion and the stability of the structure is the presence of N—H···Br hydrogen bonds which provide a linkage between N,N-dimethylanilinium cations and [Sb2Br9]3- anions which include five relatively medium contacts, with H···Br and N..Br distances ranging from 2.40 Å to 2.68 Å and 3.23 (3) Å to 3.48 (3) Å, respectively (Fig. 2 and Table 1).
of the title compound, consists of one isolated [Sb2Br9]3- anion with one ordered and two disordered N,N-dimethylanilinium cations which exhibit flip-flop disorder with 0.58 (1):0.42 (1) occupancy ratio. The inorganic ions are built up from two distorted [SbBr6]3- octahedra sharing one face. Two types of Sb—Br distances are present within the Sb2Br9 group: six short Sb—Br (terminal) distances [2.5696 (7)–2.6925 (6) Å)] and three longer Sb—Br (bridging) distances [(2.9558 (7)–3.2393 (7) Å)]. The interatomic Br—Sb—Br angles involving the terminal Br atoms are greater than the ideal 90°, whereas those between the bridging ones are less than 90°. The average Sb—Br—Sb angle is 89.92 (2)°. According to the valence-shell electron-pair repulsion (VSEPR) model, the lone pair electrons on Sb(III) atom may be considered as stereochemical non active. The phenyl rings of the N,N-dimethylanilinium cations are practically planar with the greatest deviation from the six-atoms least squares plane being 0.0088 Å, 0.0383 Å,0.0518 Å, 0.0605 Å and 0.0970 Å respectively. TheFor related hybrid organic antimonate(III) halogenide crystal structures, see: Bujak & Angel (2005); Chaabouni et al. (1997, 1998). For dielectric and phase transitions properties, see: Chaabouni & Kamoun (1998).
Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell
CrysAlis RED (Oxford Diffraction, 2009); data reduction: CrysAlis RED (Oxford Diffraction, 2009); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Berndt, 1999) and Mercury (Macrae et al., 2008); software used to prepare material for publication: WinGX (Farrugia, 2012) and publCIF (Westrip, 2010).(C8H12N)3[Sb2Br9] | Z = 2 |
Mr = 1329.25 | F(000) = 1236 |
Triclinic, P1 | Dx = 2.206 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.7857 (3) Å | Cell parameters from 8586 reflections |
b = 13.7658 (5) Å | θ = 3.1–44.7° |
c = 17.0297 (6) Å | µ = 10.36 mm−1 |
α = 66.581 (4)° | T = 296 K |
β = 78.689 (3)° | Truncated prism, axis [1 0 0], light yellow |
γ = 72.601 (3)° | 0.58 × 0.29 × 0.20 mm |
V = 2000.91 (14) Å3 |
Oxford Diffraction Xcalibur (Sapphire2, large Be window) diffractometer | 12050 independent reflections |
Radiation source: sealed X-ray tube | 6232 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.055 |
Detector resolution: 8.3622 pixels mm-1 | θmax = 30.5°, θmin = 3.1° |
ω and π scans | h = −13→12 |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2009) | k = −19→19 |
Tmin = 0.038, Tmax = 0.126 | l = −23→24 |
29905 measured 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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 0.88 | w = 1/[σ2(Fo2) + (0.0451P)2] where P = (Fo2 + 2Fc2)/3 |
12050 reflections | (Δ/σ)max = 0.001 |
398 parameters | Δρmax = 1.33 e Å−3 |
88 restraints | Δρmin = −0.89 e Å−3 |
(C8H12N)3[Sb2Br9] | γ = 72.601 (3)° |
Mr = 1329.25 | V = 2000.91 (14) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.7857 (3) Å | Mo Kα radiation |
b = 13.7658 (5) Å | µ = 10.36 mm−1 |
c = 17.0297 (6) Å | T = 296 K |
α = 66.581 (4)° | 0.58 × 0.29 × 0.20 mm |
β = 78.689 (3)° |
Oxford Diffraction Xcalibur (Sapphire2, large Be window) diffractometer | 12050 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2009) | 6232 reflections with I > 2σ(I) |
Tmin = 0.038, Tmax = 0.126 | Rint = 0.055 |
29905 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 88 restraints |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 0.88 | Δρmax = 1.33 e Å−3 |
12050 reflections | Δρmin = −0.89 e Å−3 |
398 parameters |
Experimental. Absorption correction: empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm. CrysAlis RED (Oxford Diffraction 2009) |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'s 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 > 2σ(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 | Occ. (<1) | |
Sb1 | 0.74142 (3) | 0.34793 (2) | 0.23720 (2) | 0.03514 (9) | |
Sb2 | 0.79395 (4) | 0.05119 (3) | 0.24531 (2) | 0.04300 (10) | |
Br1 | 0.75743 (7) | 0.40023 (5) | 0.36561 (4) | 0.05958 (17) | |
Br2 | 0.50427 (6) | 0.50174 (4) | 0.19319 (4) | 0.05655 (16) | |
Br3 | 0.91249 (6) | 0.47755 (5) | 0.13260 (4) | 0.05430 (15) | |
Br4 | 0.73112 (6) | 0.27216 (5) | 0.08874 (4) | 0.05175 (14) | |
Br5 | 1.00278 (6) | 0.15806 (5) | 0.28605 (4) | 0.05553 (15) | |
Br6 | 0.56880 (6) | 0.19270 (5) | 0.35018 (4) | 0.05216 (15) | |
Br7 | 0.83710 (9) | −0.11714 (5) | 0.38803 (4) | 0.0767 (2) | |
Br8 | 0.59360 (7) | −0.00822 (6) | 0.21190 (4) | 0.06810 (18) | |
Br9 | 0.98781 (8) | −0.04384 (5) | 0.15561 (5) | 0.0780 (2) | |
C1 | 0.3358 (6) | 0.2456 (4) | 0.0464 (3) | 0.0491 (14) | |
C2 | 0.1982 (7) | 0.2361 (5) | 0.0576 (4) | 0.0615 (16) | |
H2 | 0.1274 | 0.2694 | 0.0905 | 0.074* | |
C3 | 0.1669 (8) | 0.1756 (6) | 0.0186 (4) | 0.0719 (19) | |
H3 | 0.0737 | 0.1678 | 0.0253 | 0.086* | |
C4 | 0.2687 (10) | 0.1279 (6) | −0.0287 (5) | 0.079 (2) | |
H4 | 0.2453 | 0.0859 | −0.053 | 0.094* | |
C5 | 0.4050 (10) | 0.1392 (6) | −0.0422 (5) | 0.088 (2) | |
H5 | 0.4741 | 0.1071 | −0.0765 | 0.106* | |
C6 | 0.4396 (7) | 0.2009 (6) | −0.0030 (4) | 0.0730 (19) | |
H6 | 0.5321 | 0.2106 | −0.0111 | 0.088* | |
C7 | 0.3312 (7) | 0.4277 (4) | 0.0415 (4) | 0.0618 (16) | |
H7A | 0.3603 | 0.4649 | 0.0701 | 0.093* | |
H7B | 0.2286 | 0.45 | 0.0403 | 0.093* | |
H7C | 0.376 | 0.4455 | −0.0162 | 0.093* | |
C8 | 0.3250 (7) | 0.2778 (5) | 0.1818 (3) | 0.0626 (16) | |
H8A | 0.3555 | 0.3201 | 0.2052 | 0.094* | |
H8B | 0.3648 | 0.2015 | 0.2117 | 0.094* | |
H8C | 0.222 | 0.2926 | 0.1885 | 0.094* | |
N1 | 0.3760 (5) | 0.3075 (4) | 0.0885 (3) | 0.0548 (12) | |
H1 | 0.4738 | 0.2894 | 0.0854 | 0.066* | |
C9A | 1.062 (5) | 0.5602 (16) | 0.316 (2) | 0.066 (4) | 0.577 (12) |
C10A | 1.085 (4) | 0.6280 (15) | 0.3488 (14) | 0.083 (4) | 0.577 (12) |
H10A | 1.0581 | 0.7031 | 0.3198 | 0.099* | 0.577 (12) |
C11A | 1.148 (3) | 0.5882 (13) | 0.4232 (15) | 0.110 (6) | 0.577 (12) |
H11A | 1.149 | 0.6346 | 0.4505 | 0.132* | 0.577 (12) |
C12A | 1.209 (2) | 0.4806 (15) | 0.4572 (13) | 0.096 (6) | 0.577 (12) |
H12A | 1.258 | 0.4556 | 0.5058 | 0.116* | 0.577 (12) |
C13A | 1.203 (3) | 0.4034 (17) | 0.4235 (14) | 0.104 (7) | 0.577 (12) |
H13A | 1.2433 | 0.329 | 0.449 | 0.125* | 0.577 (12) |
C14A | 1.131 (2) | 0.4483 (15) | 0.3484 (14) | 0.066 (3) | 0.577 (12) |
H14A | 1.129 | 0.4037 | 0.3197 | 0.079* | 0.577 (12) |
C15A | 0.849 (3) | 0.684 (5) | 0.240 (2) | 0.074 (7) | 0.577 (12) |
H15A | 0.8082 | 0.7135 | 0.1862 | 0.111* | 0.577 (12) |
H15B | 0.864 | 0.7426 | 0.2523 | 0.111* | 0.577 (12) |
H15C | 0.7834 | 0.649 | 0.285 | 0.111* | 0.577 (12) |
C16A | 1.086 (4) | 0.651 (2) | 0.1585 (19) | 0.065 (4) | 0.577 (12) |
H16A | 1.0332 | 0.6842 | 0.1086 | 0.097* | 0.577 (12) |
H16B | 1.1673 | 0.595 | 0.1511 | 0.097* | 0.577 (12) |
H16C | 1.1187 | 0.706 | 0.1662 | 0.097* | 0.577 (12) |
N2A | 0.990 (4) | 0.603 (3) | 0.2367 (18) | 0.070 (3) | 0.577 (12) |
H2A | 0.9706 | 0.5452 | 0.2309 | 0.084* | 0.577 (12) |
C9B | 1.083 (7) | 0.545 (2) | 0.319 (3) | 0.066 (4) | 0.423 (12) |
C10B | 1.101 (5) | 0.588 (2) | 0.374 (2) | 0.083 (4) | 0.423 (12) |
H10B | 1.0614 | 0.6615 | 0.3642 | 0.099* | 0.423 (12) |
C11B | 1.176 (5) | 0.524 (2) | 0.444 (2) | 0.110 (6) | 0.423 (12) |
H11B | 1.2036 | 0.5545 | 0.4759 | 0.132* | 0.423 (12) |
C12B | 1.208 (4) | 0.415 (2) | 0.464 (2) | 0.096 (6) | 0.423 (12) |
H12B | 1.2545 | 0.3691 | 0.5132 | 0.116* | 0.423 (12) |
C13B | 1.172 (4) | 0.369 (2) | 0.412 (2) | 0.104 (7) | 0.423 (12) |
H13B | 1.1997 | 0.2933 | 0.4274 | 0.125* | 0.423 (12) |
C14B | 1.097 (3) | 0.433 (2) | 0.339 (2) | 0.066 (3) | 0.423 (12) |
H14B | 1.0619 | 0.4052 | 0.3076 | 0.079* | 0.423 (12) |
C15B | 0.863 (5) | 0.681 (7) | 0.258 (4) | 0.074 (7) | 0.423 (12) |
H15D | 0.8078 | 0.709 | 0.2098 | 0.111* | 0.423 (12) |
H15E | 0.8787 | 0.7402 | 0.2686 | 0.111* | 0.423 (12) |
H15F | 0.8113 | 0.639 | 0.3082 | 0.111* | 0.423 (12) |
C16B | 1.096 (5) | 0.675 (3) | 0.169 (3) | 0.065 (4) | 0.423 (12) |
H16D | 1.0522 | 0.7028 | 0.1164 | 0.097* | 0.423 (12) |
H16E | 1.1905 | 0.6293 | 0.1633 | 0.097* | 0.423 (12) |
H16F | 1.1037 | 0.7345 | 0.1825 | 0.097* | 0.423 (12) |
N2B | 1.006 (5) | 0.608 (4) | 0.241 (2) | 0.070 (3) | 0.423 (12) |
H2B | 0.9876 | 0.5599 | 0.2226 | 0.084* | 0.423 (12) |
C17A | 0.653 (3) | 0.177 (2) | 0.5912 (13) | 0.049 (4) | 0.577 (12) |
C18A | 0.6882 (18) | 0.137 (3) | 0.6726 (16) | 0.060 (4) | 0.577 (12) |
H18A | 0.7405 | 0.0648 | 0.6959 | 0.072* | 0.577 (12) |
C19A | 0.648 (4) | 0.200 (3) | 0.721 (2) | 0.086 (6) | 0.577 (12) |
H19A | 0.6819 | 0.1759 | 0.7747 | 0.103* | 0.577 (12) |
C20A | 0.559 (3) | 0.299 (2) | 0.6888 (13) | 0.091 (7) | 0.577 (12) |
H20A | 0.5361 | 0.3454 | 0.7198 | 0.109* | 0.577 (12) |
C21A | 0.501 (4) | 0.335 (4) | 0.614 (2) | 0.109 (7) | 0.577 (12) |
H21A | 0.434 | 0.4021 | 0.594 | 0.13* | 0.577 (12) |
C22A | 0.545 (3) | 0.268 (3) | 0.569 (3) | 0.076 (6) | 0.577 (12) |
H22A | 0.4995 | 0.285 | 0.5203 | 0.091* | 0.577 (12) |
C23A | 0.848 (3) | 0.0786 (13) | 0.5141 (16) | 0.043 (3) | 0.577 (12) |
H23A | 0.8667 | 0.0384 | 0.4766 | 0.065* | 0.577 (12) |
H23B | 0.8948 | 0.0337 | 0.5657 | 0.065* | 0.577 (12) |
H23C | 0.8841 | 0.1429 | 0.4858 | 0.065* | 0.577 (12) |
C24A | 0.624 (4) | 0.016 (3) | 0.572 (3) | 0.065 (8) | 0.577 (12) |
H24A | 0.6498 | −0.0241 | 0.5339 | 0.098* | 0.577 (12) |
H24B | 0.521 | 0.0419 | 0.5778 | 0.098* | 0.577 (12) |
H24C | 0.657 | −0.031 | 0.6273 | 0.098* | 0.577 (12) |
N3A | 0.691 (2) | 0.111 (2) | 0.5359 (16) | 0.066 (3) | 0.577 (12) |
H3A | 0.6518 | 0.155 | 0.4855 | 0.079* | 0.577 (12) |
C17B | 0.646 (4) | 0.166 (3) | 0.615 (2) | 0.049 (4) | 0.423 (12) |
C18B | 0.728 (3) | 0.124 (4) | 0.685 (3) | 0.060 (4) | 0.423 (12) |
H18B | 0.8106 | 0.0671 | 0.6913 | 0.072* | 0.423 (12) |
C19B | 0.672 (6) | 0.175 (4) | 0.745 (3) | 0.086 (6) | 0.423 (12) |
H19B | 0.702 | 0.1397 | 0.7996 | 0.103* | 0.423 (12) |
C20B | 0.573 (4) | 0.277 (3) | 0.7265 (18) | 0.091 (7) | 0.423 (12) |
H20B | 0.5379 | 0.3118 | 0.7658 | 0.109* | 0.423 (12) |
C21B | 0.533 (6) | 0.320 (5) | 0.643 (3) | 0.109 (7) | 0.423 (12) |
H21B | 0.4697 | 0.3887 | 0.6272 | 0.13* | 0.423 (12) |
C22B | 0.573 (5) | 0.275 (4) | 0.578 (5) | 0.076 (6) | 0.423 (12) |
H22B | 0.5539 | 0.3119 | 0.5207 | 0.091* | 0.423 (12) |
C23B | 0.839 (4) | 0.1109 (19) | 0.513 (2) | 0.043 (3) | 0.423 (12) |
H23D | 0.8613 | 0.076 | 0.4714 | 0.065* | 0.423 (12) |
H23E | 0.9037 | 0.0713 | 0.5571 | 0.065* | 0.423 (12) |
H23F | 0.8498 | 0.1845 | 0.4849 | 0.065* | 0.423 (12) |
C24B | 0.656 (6) | 0.004 (4) | 0.583 (5) | 0.065 (8) | 0.423 (12) |
H24D | 0.6836 | −0.0266 | 0.5391 | 0.098* | 0.423 (12) |
H24E | 0.5548 | 0.0119 | 0.5996 | 0.098* | 0.423 (12) |
H24F | 0.7082 | −0.0441 | 0.6324 | 0.098* | 0.423 (12) |
N3B | 0.689 (3) | 0.113 (3) | 0.551 (2) | 0.066 (3) | 0.423 (12) |
H3B | 0.633 | 0.1554 | 0.507 | 0.079* | 0.423 (12) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Sb1 | 0.03892 (19) | 0.03206 (16) | 0.03812 (18) | −0.00952 (13) | −0.00727 (14) | −0.01410 (13) |
Sb2 | 0.0512 (2) | 0.03633 (17) | 0.0463 (2) | −0.01413 (15) | −0.00341 (17) | −0.01783 (15) |
Br1 | 0.0832 (4) | 0.0580 (3) | 0.0507 (3) | −0.0201 (3) | −0.0150 (3) | −0.0270 (3) |
Br2 | 0.0515 (3) | 0.0522 (3) | 0.0690 (4) | 0.0040 (3) | −0.0174 (3) | −0.0317 (3) |
Br3 | 0.0608 (4) | 0.0566 (3) | 0.0487 (3) | −0.0291 (3) | −0.0056 (3) | −0.0113 (3) |
Br4 | 0.0485 (3) | 0.0585 (3) | 0.0487 (3) | −0.0159 (3) | −0.0030 (3) | −0.0185 (3) |
Br5 | 0.0458 (3) | 0.0593 (3) | 0.0533 (3) | −0.0121 (3) | −0.0059 (3) | −0.0119 (3) |
Br6 | 0.0524 (3) | 0.0601 (3) | 0.0475 (3) | −0.0226 (3) | −0.0070 (3) | −0.0155 (3) |
Br7 | 0.1167 (6) | 0.0462 (3) | 0.0601 (4) | −0.0187 (3) | −0.0198 (4) | −0.0073 (3) |
Br8 | 0.0693 (4) | 0.0899 (5) | 0.0713 (4) | −0.0423 (4) | 0.0041 (3) | −0.0444 (4) |
Br9 | 0.0767 (5) | 0.0615 (4) | 0.0974 (5) | −0.0210 (3) | 0.0267 (4) | −0.0433 (4) |
C1 | 0.064 (4) | 0.050 (3) | 0.035 (3) | −0.017 (3) | −0.011 (3) | −0.012 (2) |
C2 | 0.064 (4) | 0.073 (4) | 0.051 (4) | −0.028 (3) | 0.000 (3) | −0.021 (3) |
C3 | 0.079 (5) | 0.087 (5) | 0.060 (4) | −0.047 (4) | −0.004 (4) | −0.019 (4) |
C4 | 0.109 (6) | 0.076 (5) | 0.069 (5) | −0.036 (5) | −0.015 (5) | −0.032 (4) |
C5 | 0.107 (7) | 0.091 (5) | 0.062 (5) | −0.003 (5) | −0.003 (4) | −0.042 (4) |
C6 | 0.062 (4) | 0.102 (5) | 0.062 (4) | −0.022 (4) | −0.005 (3) | −0.035 (4) |
C7 | 0.089 (5) | 0.053 (3) | 0.047 (3) | −0.026 (3) | −0.016 (3) | −0.011 (3) |
C8 | 0.071 (4) | 0.087 (4) | 0.036 (3) | −0.028 (3) | −0.005 (3) | −0.022 (3) |
N1 | 0.050 (3) | 0.071 (3) | 0.047 (3) | −0.021 (2) | −0.006 (2) | −0.020 (2) |
C9A | 0.034 (11) | 0.091 (7) | 0.062 (5) | −0.006 (7) | −0.009 (4) | −0.022 (6) |
C10A | 0.109 (10) | 0.068 (13) | 0.067 (14) | −0.033 (14) | −0.018 (10) | −0.008 (9) |
C11A | 0.097 (13) | 0.130 (18) | 0.143 (16) | −0.032 (17) | −0.027 (9) | −0.080 (19) |
C12A | 0.092 (9) | 0.115 (16) | 0.088 (9) | −0.027 (15) | −0.031 (7) | −0.032 (15) |
C13A | 0.055 (14) | 0.089 (14) | 0.113 (11) | −0.013 (10) | 0.005 (8) | 0.010 (11) |
C14A | 0.055 (11) | 0.089 (8) | 0.081 (7) | −0.034 (6) | −0.005 (6) | −0.048 (6) |
C15A | 0.055 (7) | 0.056 (5) | 0.099 (15) | 0.001 (6) | −0.021 (8) | −0.020 (12) |
C16A | 0.068 (6) | 0.064 (12) | 0.069 (9) | −0.030 (7) | −0.007 (6) | −0.020 (7) |
N2A | 0.065 (7) | 0.069 (4) | 0.085 (5) | −0.013 (4) | −0.018 (4) | −0.033 (4) |
C9B | 0.034 (11) | 0.091 (7) | 0.062 (5) | −0.006 (7) | −0.009 (4) | −0.022 (6) |
C10B | 0.109 (10) | 0.068 (13) | 0.067 (14) | −0.033 (14) | −0.018 (10) | −0.008 (9) |
C11B | 0.097 (13) | 0.130 (18) | 0.143 (16) | −0.032 (17) | −0.027 (9) | −0.080 (19) |
C12B | 0.092 (9) | 0.115 (16) | 0.088 (9) | −0.027 (15) | −0.031 (7) | −0.032 (15) |
C13B | 0.055 (14) | 0.089 (14) | 0.113 (11) | −0.013 (10) | 0.005 (8) | 0.010 (11) |
C14B | 0.055 (11) | 0.089 (8) | 0.081 (7) | −0.034 (6) | −0.005 (6) | −0.048 (6) |
C15B | 0.055 (7) | 0.056 (5) | 0.099 (15) | 0.001 (6) | −0.021 (8) | −0.020 (12) |
C16B | 0.068 (6) | 0.064 (12) | 0.069 (9) | −0.030 (7) | −0.007 (6) | −0.020 (7) |
N2B | 0.065 (7) | 0.069 (4) | 0.085 (5) | −0.013 (4) | −0.018 (4) | −0.033 (4) |
C17A | 0.054 (4) | 0.067 (7) | 0.038 (12) | −0.030 (4) | 0.032 (7) | −0.037 (10) |
C18A | 0.012 (10) | 0.078 (9) | 0.102 (10) | 0.001 (9) | −0.006 (8) | −0.054 (8) |
C19A | 0.062 (14) | 0.145 (18) | 0.073 (19) | −0.029 (10) | −0.015 (10) | −0.057 (16) |
C20A | 0.077 (10) | 0.157 (16) | 0.11 (2) | −0.042 (9) | 0.030 (14) | −0.125 (19) |
C21A | 0.055 (17) | 0.104 (13) | 0.21 (3) | −0.008 (11) | −0.002 (13) | −0.116 (19) |
C22A | 0.047 (12) | 0.082 (7) | 0.116 (12) | −0.025 (8) | −0.004 (9) | −0.046 (6) |
C23A | 0.038 (4) | 0.029 (10) | 0.051 (4) | 0.012 (7) | −0.001 (3) | −0.019 (8) |
C24A | 0.088 (15) | 0.072 (9) | 0.057 (13) | −0.038 (11) | 0.007 (13) | −0.038 (9) |
N3A | 0.063 (4) | 0.080 (4) | 0.060 (8) | −0.015 (3) | 0.012 (4) | −0.040 (5) |
C17B | 0.054 (4) | 0.067 (7) | 0.038 (12) | −0.030 (4) | 0.032 (7) | −0.037 (10) |
C18B | 0.012 (10) | 0.078 (9) | 0.102 (10) | 0.001 (9) | −0.006 (8) | −0.054 (8) |
C19B | 0.062 (14) | 0.145 (18) | 0.073 (19) | −0.029 (10) | −0.015 (10) | −0.057 (16) |
C20B | 0.077 (10) | 0.157 (16) | 0.11 (2) | −0.042 (9) | 0.030 (14) | −0.125 (19) |
C21B | 0.055 (17) | 0.104 (13) | 0.21 (3) | −0.008 (11) | −0.002 (13) | −0.116 (19) |
C22B | 0.047 (12) | 0.082 (7) | 0.116 (12) | −0.025 (8) | −0.004 (9) | −0.046 (6) |
C23B | 0.038 (4) | 0.029 (10) | 0.051 (4) | 0.012 (7) | −0.001 (3) | −0.019 (8) |
C24B | 0.088 (15) | 0.072 (9) | 0.057 (13) | −0.038 (11) | 0.007 (13) | −0.038 (9) |
N3B | 0.063 (4) | 0.080 (4) | 0.060 (8) | −0.015 (3) | 0.012 (4) | −0.040 (5) |
Sb1—Br1 | 2.6036 (6) | C11B—C12B | 1.351 (11) |
Sb1—Br2 | 2.6292 (6) | C11B—H11B | 0.93 |
Sb1—Br3 | 2.6925 (6) | C12B—C13B | 1.412 (11) |
Sb1—Br4 | 3.1222 (6) | C12B—H12B | 0.93 |
Sb1—Br5 | 3.0287 (6) | C13B—C14B | 1.408 (10) |
Sb1—Br6 | 2.9558 (7) | C13B—H13B | 0.93 |
Sb2—Br4 | 3.1333 (7) | C14B—H14B | 0.93 |
Sb2—Br5 | 3.1602 (7) | C15B—N2B | 1.508 (9) |
Sb2—Br6 | 3.2393 (7) | C15B—H15D | 0.96 |
Sb2—Br7 | 2.6068 (7) | C15B—H15E | 0.96 |
Sb2—Br8 | 2.5696 (7) | C15B—H15F | 0.96 |
Sb2—Br9 | 2.5713 (8) | C16B—N2B | 1.512 (9) |
C1—C6 | 1.349 (8) | C16B—H16D | 0.96 |
C1—C2 | 1.361 (8) | C16B—H16E | 0.96 |
C1—N1 | 1.482 (7) | C16B—H16F | 0.96 |
C2—C3 | 1.379 (9) | N2B—H2B | 0.91 |
C2—H2 | 0.93 | C17A—C18A | 1.346 (14) |
C3—C4 | 1.336 (10) | C17A—C22A | 1.347 (14) |
C3—H3 | 0.93 | C17A—N3A | 1.480 (9) |
C4—C5 | 1.353 (10) | C18A—C19A | 1.354 (14) |
C4—H4 | 0.93 | C18A—H18A | 0.93 |
C5—C6 | 1.412 (10) | C19A—C20A | 1.346 (14) |
C5—H5 | 0.93 | C19A—H19A | 0.93 |
C6—H6 | 0.93 | C20A—C21A | 1.350 (14) |
C7—N1 | 1.490 (7) | C20A—H20A | 0.93 |
C7—H7A | 0.96 | C21A—C22A | 1.352 (14) |
C7—H7B | 0.96 | C21A—H21A | 0.93 |
C7—H7C | 0.96 | C22A—H22A | 0.93 |
C8—N1 | 1.495 (7) | C23A—N3A | 1.482 (8) |
C8—H8A | 0.96 | C23A—H23A | 0.96 |
C8—H8B | 0.96 | C23A—H23B | 0.96 |
C8—H8C | 0.96 | C23A—H23C | 0.96 |
N1—H1 | 0.91 | C24A—N3A | 1.495 (8) |
C9A—C10A | 1.351 (10) | C24A—H24A | 0.96 |
C9A—C14A | 1.408 (10) | C24A—H24B | 0.96 |
C9A—N2A | 1.474 (10) | C24A—H24C | 0.96 |
C10A—C11A | 1.354 (10) | N3A—H3A | 0.91 |
C10A—H10A | 0.93 | C17B—C18B | 1.39 (2) |
C11A—C12A | 1.344 (10) | C17B—C22B | 1.40 (2) |
C11A—H11A | 0.93 | C17B—N3B | 1.477 (10) |
C12A—C13A | 1.413 (10) | C18B—C19B | 1.40 (2) |
C12A—H12A | 0.93 | C18B—H18B | 0.93 |
C13A—C14A | 1.408 (10) | C19B—C20B | 1.40 (2) |
C13A—H13A | 0.93 | C19B—H19B | 0.93 |
C14A—H14A | 0.93 | C20B—C21B | 1.40 (2) |
C15A—N2A | 1.507 (8) | C20B—H20B | 0.93 |
C15A—H15A | 0.96 | C21B—C22B | 1.40 (2) |
C15A—H15B | 0.96 | C21B—H21B | 0.93 |
C15A—H15C | 0.96 | C22B—H22B | 0.93 |
C16A—N2A | 1.512 (8) | C23B—N3B | 1.480 (8) |
C16A—H16A | 0.96 | C23B—H23D | 0.96 |
C16A—H16B | 0.96 | C23B—H23E | 0.96 |
C16A—H16C | 0.96 | C23B—H23F | 0.96 |
N2A—H2A | 0.91 | C24B—N3B | 1.489 (8) |
C9B—C10B | 1.350 (10) | C24B—H24D | 0.96 |
C9B—C14B | 1.408 (10) | C24B—H24E | 0.96 |
C9B—N2B | 1.474 (10) | C24B—H24F | 0.96 |
C10B—C11B | 1.355 (11) | N3B—H3B | 0.91 |
C10B—H10B | 0.93 | ||
Br1—Sb1—Br2 | 92.27 (2) | C9B—C10B—C11B | 121 (3) |
Br1—Sb1—Br3 | 91.63 (2) | C9B—C10B—H10B | 119.6 |
Br1—Sb1—Br4 | 176.87 (2) | C11B—C10B—H10B | 119.6 |
Br1—Sb1—Br5 | 91.05 (2) | C12B—C11B—C10B | 117 (3) |
Br1—Sb1—Br6 | 90.23 (2) | C12B—C11B—H11B | 121.3 |
Br2—Sb1—Br3 | 93.37 (2) | C10B—C11B—H11B | 121.3 |
Br2—Sb1—Br4 | 90.50 (2) | C11B—C12B—C13B | 121 (3) |
Br2—Sb1—Br5 | 175.26 (2) | C11B—C12B—H12B | 119.3 |
Br2—Sb1—Br6 | 90.04 (2) | C13B—C12B—H12B | 119.3 |
Br3—Sb1—Br4 | 89.67 (2) | C14B—C13B—C12B | 122 (3) |
Br3—Sb1—Br5 | 89.915 (19) | C14B—C13B—H13B | 118.9 |
Br3—Sb1—Br6 | 176.05 (2) | C12B—C13B—H13B | 118.9 |
Br4—Sb1—Br5 | 86.10 (2) | C9B—C14B—C13B | 111 (2) |
Br4—Sb1—Br6 | 88.29 (2) | C9B—C14B—H14B | 124.4 |
Br5—Sb1—Br6 | 86.570 (18) | C13B—C14B—H14B | 124.4 |
Br4—Sb2—Br5 | 83.71 (2) | N2B—C15B—H15D | 109.5 |
Br4—Sb2—Br6 | 83.28 (2) | N2B—C15B—H15E | 109.5 |
Br4—Sb2—Br7 | 172.52 (2) | H15D—C15B—H15E | 109.5 |
Br4—Sb2—Br8 | 90.89 (2) | N2B—C15B—H15F | 109.5 |
Br4—Sb2—Br9 | 92.67 (2) | H15D—C15B—H15F | 109.5 |
Br5—Sb2—Br6 | 79.75 (2) | H15E—C15B—H15F | 109.5 |
Br5—Sb2—Br7 | 91.92 (2) | N2B—C16B—H16D | 109.5 |
Br5—Sb2—Br8 | 170.96 (2) | N2B—C16B—H16E | 109.5 |
Br5—Sb2—Br9 | 94.81 (2) | H16D—C16B—H16E | 109.5 |
Br6—Sb2—Br7 | 89.98 (2) | N2B—C16B—H16F | 109.5 |
Br6—Sb2—Br8 | 92.44 (2) | H16D—C16B—H16F | 109.5 |
Br6—Sb2—Br9 | 173.51 (2) | H16E—C16B—H16F | 109.5 |
Br8—Sb2—Br9 | 92.68 (3) | C9B—N2B—C15B | 111.9 (7) |
Br8—Sb2—Br7 | 92.64 (3) | C9B—N2B—C16B | 111.5 (7) |
Br9—Sb2—Br7 | 93.76 (3) | C15B—N2B—C16B | 110.5 (8) |
C6—C1—C2 | 122.4 (6) | C9B—N2B—H2B | 107.5 |
C6—C1—N1 | 117.5 (5) | C15B—N2B—H2B | 107.5 |
C2—C1—N1 | 120.1 (5) | C16B—N2B—H2B | 107.5 |
C1—C2—C3 | 117.8 (6) | C18A—C17A—C22A | 117 (3) |
C1—C2—H2 | 121.1 | C18A—C17A—N3A | 123 (2) |
C3—C2—H2 | 121.1 | C22A—C17A—N3A | 117 (2) |
C4—C3—C2 | 121.0 (7) | C17A—C18A—C19A | 121 (2) |
C4—C3—H3 | 119.5 | C17A—C18A—H18A | 119.6 |
C2—C3—H3 | 119.5 | C19A—C18A—H18A | 119.6 |
C3—C4—C5 | 121.7 (7) | C20A—C19A—C18A | 117.8 (19) |
C3—C4—H4 | 119.1 | C20A—C19A—H19A | 121.1 |
C5—C4—H4 | 119.1 | C18A—C19A—H19A | 121.1 |
C4—C5—C6 | 118.4 (7) | C19A—C20A—C21A | 123 (2) |
C4—C5—H5 | 120.8 | C19A—C20A—H20A | 118.4 |
C6—C5—H5 | 120.8 | C21A—C20A—H20A | 118.4 |
C1—C6—C5 | 118.7 (6) | C20A—C21A—C22A | 116 (3) |
C1—C6—H6 | 120.7 | C20A—C21A—H21A | 122.2 |
C5—C6—H6 | 120.7 | C22A—C21A—H21A | 122.2 |
N1—C7—H7A | 109.5 | C17A—C22A—C21A | 123 (3) |
N1—C7—H7B | 109.5 | C17A—C22A—H22A | 118.5 |
H7A—C7—H7B | 109.5 | C21A—C22A—H22A | 118.5 |
N1—C7—H7C | 109.5 | N3A—C23A—H23A | 109.5 |
H7A—C7—H7C | 109.5 | N3A—C23A—H23B | 109.5 |
H7B—C7—H7C | 109.5 | H23A—C23A—H23B | 109.5 |
N1—C8—H8A | 109.5 | N3A—C23A—H23C | 109.5 |
N1—C8—H8B | 109.5 | H23A—C23A—H23C | 109.5 |
H8A—C8—H8B | 109.5 | H23B—C23A—H23C | 109.5 |
N1—C8—H8C | 109.5 | N3A—C24A—H24A | 109.5 |
H8A—C8—H8C | 109.5 | N3A—C24A—H24B | 109.5 |
H8B—C8—H8C | 109.5 | H24A—C24A—H24B | 109.5 |
C1—N1—C7 | 111.9 (4) | N3A—C24A—H24C | 109.5 |
C1—N1—C8 | 113.8 (4) | H24A—C24A—H24C | 109.5 |
C7—N1—C8 | 111.3 (5) | H24B—C24A—H24C | 109.5 |
C1—N1—H1 | 106.5 | C17A—N3A—C23A | 112.7 (6) |
C7—N1—H1 | 106.5 | C17A—N3A—C24A | 112.1 (6) |
C8—N1—H1 | 106.5 | C23A—N3A—C24A | 112.7 (7) |
C10A—C9A—C14A | 119 (2) | C17A—N3A—H3A | 106.2 |
C10A—C9A—N2A | 121.4 (17) | C23A—N3A—H3A | 106.2 |
C14A—C9A—N2A | 118 (2) | C24A—N3A—H3A | 106.2 |
C9A—C10A—C11A | 120.9 (17) | C18B—C17B—C22B | 125 (4) |
C9A—C10A—H10A | 119.5 | C18B—C17B—N3B | 117 (3) |
C11A—C10A—H10A | 119.5 | C22B—C17B—N3B | 111 (3) |
C12A—C11A—C10A | 119.2 (18) | C17B—C18B—C19B | 113 (3) |
C12A—C11A—H11A | 120.4 | C17B—C18B—H18B | 123.7 |
C10A—C11A—H11A | 120.4 | C19B—C18B—H18B | 123.7 |
C11A—C12A—C13A | 124.0 (19) | C20B—C19B—C18B | 124 (3) |
C11A—C12A—H12A | 118 | C20B—C19B—H19B | 117.9 |
C13A—C12A—H12A | 118 | C18B—C19B—H19B | 118 |
C14A—C13A—C12A | 114.5 (17) | C19B—C20B—C21B | 112 (3) |
C14A—C13A—H13A | 122.8 | C19B—C20B—H20B | 123.9 |
C12A—C13A—H13A | 122.8 | C21B—C20B—H20B | 123.9 |
C9A—C14A—C13A | 120.6 (17) | C20B—C21B—C22B | 130 (5) |
C9A—C14A—H14A | 119.7 | C20B—C21B—H21B | 115 |
C13A—C14A—H14A | 119.7 | C22B—C21B—H21B | 115 |
N2A—C15A—H15A | 109.5 | C17B—C22B—C21B | 108 (5) |
N2A—C15A—H15B | 109.5 | C17B—C22B—H22B | 126 |
H15A—C15A—H15B | 109.5 | C21B—C22B—H22B | 126 |
N2A—C15A—H15C | 109.5 | N3B—C23B—H23D | 109.5 |
H15A—C15A—H15C | 109.5 | N3B—C23B—H23E | 109.5 |
H15B—C15A—H15C | 109.5 | H23D—C23B—H23E | 109.5 |
N2A—C16A—H16A | 109.5 | N3B—C23B—H23F | 109.5 |
N2A—C16A—H16B | 109.5 | H23D—C23B—H23F | 109.5 |
H16A—C16A—H16B | 109.5 | H23E—C23B—H23F | 109.5 |
N2A—C16A—H16C | 109.5 | N3B—C24B—H24D | 109.5 |
H16A—C16A—H16C | 109.5 | N3B—C24B—H24E | 109.5 |
H16B—C16A—H16C | 109.5 | H24D—C24B—H24E | 109.5 |
C9A—N2A—C15A | 112.1 (7) | N3B—C24B—H24F | 109.5 |
C9A—N2A—C16A | 111.6 (6) | H24D—C24B—H24F | 109.5 |
C15A—N2A—C16A | 110.5 (7) | H24E—C24B—H24F | 109.5 |
C9A—N2A—H2A | 107.5 | C17B—N3B—C23B | 113.1 (7) |
C15A—N2A—H2A | 107.5 | C17B—N3B—C24B | 112.6 (7) |
C16A—N2A—H2A | 107.5 | C23B—N3B—C24B | 113.4 (8) |
C10B—C9B—C14B | 124 (3) | C17B—N3B—H3B | 105.6 |
C10B—C9B—N2B | 124 (2) | C23B—N3B—H3B | 105.6 |
C14B—C9B—N2B | 109 (3) | C24B—N3B—H3B | 105.6 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···Br4 | 0.91 | 2.47 | 3.362 (5) | 168 |
N2A—H2A···Br3 | 0.91 | 2.43 | 3.23 (3) | 146 |
N2B—H2B···Br3 | 0.91 | 2.55 | 3.43 (4) | 162 |
N3A—H3A···Br6 | 0.91 | 2.4 | 3.25 (2) | 155 |
N3B—H3B···Br6 | 0.91 | 2.68 | 3.48 (3) | 148 |
Experimental details
Crystal data | |
Chemical formula | (C8H12N)3[Sb2Br9] |
Mr | 1329.25 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 296 |
a, b, c (Å) | 9.7857 (3), 13.7658 (5), 17.0297 (6) |
α, β, γ (°) | 66.581 (4), 78.689 (3), 72.601 (3) |
V (Å3) | 2000.91 (14) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 10.36 |
Crystal size (mm) | 0.58 × 0.29 × 0.20 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur (Sapphire2, large Be window) |
Absorption correction | Multi-scan (CrysAlis RED; Oxford Diffraction, 2009) |
Tmin, Tmax | 0.038, 0.126 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 29905, 12050, 6232 |
Rint | 0.055 |
(sin θ/λ)max (Å−1) | 0.714 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.096, 0.88 |
No. of reflections | 12050 |
No. of parameters | 398 |
No. of restraints | 88 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.33, −0.89 |
Computer programs: CrysAlis CCD (Oxford Diffraction, 2009), CrysAlis RED (Oxford Diffraction, 2009), SIR92 (Altomare et al., 1993), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg & Berndt, 1999) and Mercury (Macrae et al., 2008), WinGX (Farrugia, 2012) and publCIF (Westrip, 2010).
Sb1—Br1 | 2.6036 (6) | Sb2—Br4 | 3.1333 (7) |
Sb1—Br2 | 2.6292 (6) | Sb2—Br5 | 3.1602 (7) |
Sb1—Br3 | 2.6925 (6) | Sb2—Br6 | 3.2393 (7) |
Sb1—Br4 | 3.1222 (6) | Sb2—Br7 | 2.6068 (7) |
Sb1—Br5 | 3.0287 (6) | Sb2—Br8 | 2.5696 (7) |
Sb1—Br6 | 2.9558 (7) | Sb2—Br9 | 2.5713 (8) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···Br4 | 0.91 | 2.47 | 3.362 (5) | 167.6 |
N2A—H2A···Br3 | 0.91 | 2.43 | 3.23 (3) | 145.7 |
N2B—H2B···Br3 | 0.91 | 2.55 | 3.43 (4) | 162.4 |
N3A—H3A···Br6 | 0.91 | 2.4 | 3.25 (2) | 154.6 |
N3B—H3B···Br6 | 0.91 | 2.68 | 3.48 (3) | 147.5 |
Acknowledgements
The authors gratefully acknowledge the support of the Tunisian Ministry of Higher Education and Scientific Research.
References
Altomare, A., Cascarano, G., Giacovazzo, C. & Guagliardi, A. (1993). J. Appl. Cryst. 26, 343–350. CrossRef Web of Science IUCr Journals Google Scholar
Brandenburg, K. & Berndt, M. (1999). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Bujak, M. & Angel, R. J. (2005). J. Solid State Chem. 178, 2237–2246. Web of Science CSD CrossRef CAS Google Scholar
Chaabouni, S. & Kamoun, S. (1998). Phase Transitions, 66, 119–127. Web of Science CrossRef CAS Google Scholar
Chaabouni, S., Kamoun, S., Daoud, A. & Jouini, T. (1997). J. Chem. Crystallogr. 27, 401–404. CrossRef CAS Google Scholar
Chaabouni, S., Kamoun, S. & Jaud, J. (1998). Mater. Res. Bull. 33, 377–388. Web of Science CrossRef CAS Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Macrae, C. F., Bruno, I. J., Chisholm, J. A., Edgington, P. R., McCabe, P., Pidcock, E., Rodriguez-Monge, L., Taylor, R., van de Streek, J. & Wood, P. A. (2008). J. Appl. Cryst. 41, 466–470. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Oxford Diffraction (2009). CrystAlis CCD and CrysAlis RED. Oxford Diffraction Ltd, Yarnton, Oxfordshire, England. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920–925. Web of Science CrossRef CAS IUCr Journals Google Scholar
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.
This study is a part of our investigations on the syntheses, structures and phase transitions of halogenoantimonate (III) anions in combination with organic cations (Bujak & Angel, 2005; Chaabouni et al., 1997; Chaabouni et al., 1998; Chaabouni & Kamoun, 1998). In these compounds the Sb atom shows a tendency toward distorted octahedral coordination with some rather long Sb—X bonds, which is attributed to the aspherical distribution of the lone pair electrons at Sb(III). The asymmetric unit of the title compound, consists of one isolated [Sb2Br9]3- anion with one ordered and two disordered N,N-dimethylanilinium cations which exhibit flip-flop disorder with 0.58 (1):0.42 (1) occupancy ratio. The inorganic ions are built up from two distorted [SbBr6]3- octahedra sharing one face. Two types of Sb—Br distances are present within the Sb2Br9 group: six short Sb—Br (terminal) distances [2.5696 (7)–2.6925 (6) Å)] and three longer Sb—Br (bridging) distances [(2.9558 (7)–3.2393 (7) Å)]. The interatomic Br—Sb—Br angles involving the terminal Br atoms are greater than the ideal 90°, whereas those between the bridging ones are less than 90°. The average Sb—Br—Sb angle is 89.92 (2)°. According to the valence-shell electron-pair repulsion (VSEPR) model, the lone pair electrons on Sb(III) atom may be considered as stereochemical non active. The phenyl rings of the N,N-dimethylanilinium cations are practically planar with the greatest deviation from the six-atoms least squares plane being 0.0088 Å, 0.0383 Å,0.0518 Å, 0.0605 Å and 0.0970 Å respectively. The π-π interactions between phenyl rings may be neglected (> 4 Å); in fact the shortest distances between the centroids of the rings are: Cg(1)···Cg(1)i = 5.521 (4) Å,Cg(2)···Cg(2)ii = 4.227 (15) Å, Cg(2)···Cg(3)ii = 4.214 (19) Å and Cg(3)···Cg(3)ii = 4.26 (2) Å [Cg(1), Cg(2) and Cg(3) are the centroids of the C1···C6, C9···C14 and C17···C22 rings respectively; symmetry codes: (i) 1 - x, -y, -z; (ii) -x, 1 - y, 1 - z]. The major contributions to the cohesion and the stability of the structure is the presence of N—H···Br hydrogen bonds which provide a linkage between N,N-dimethylanilinium cations and [Sb2Br9]3- anions which include five relatively medium contacts, with H···Br and N..Br distances ranging from 2.40 Å to 2.68 Å and 3.23 (3) Å to 3.48 (3) Å, respectively (Fig. 2 and Table 1).