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The crystal structure of the title compound, alternatively called 1,2,3-triiodo-5-(triphenylmethyl)benzene, C25H17I3, is analysed in terms of I...I and I...π interactions and the herring-bone T motif between phenyl groups. There are two mol­ecules in the asymmetric unit, denoted A and B. Inversion-related A mol­ecules are connected via an I...π interaction (3.641 Å, to a C—C bond mid-point) to form an I...π dimer, and these dimers are connected through symmetry-independent B mol­ecules via I...I [3.5571 (15) Å] and I...π (3.561 Å, to a C—C bond mid-point) interactions.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270104006146/jz1609sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S0108270104006146/jz1609Isup2.hkl
Contains datablock I

CCDC reference: 241228

Comment top

The Cl atom is a well known steering group in crystal engineering (Sarma & Desiraju, 1986). Halogenated derivatives of tetraphenylmethane, tetrakis(4-bromophenyl)methane (Reddy et al., 1996) and tetrakis(4-iodophenyl)methane (Anthony et al., 1998) form diamondoid networks mediated by the halogen tetramer synthon. In the crystal structure of (4-iodophenyl)triphenylmethane, molecules are connected via an I···π interaction (I···phenyl centroid 3.747 Å and 146.6°) to form a zigzag network (Thaimattam et al., 1998). The crystal structure of 3,4,5-triiodotoluene has an I4 tetramer synthon (Liu et al., 1985), in which each I atom interacts with two neighbouring I atoms [I···I distance 3.746 (1) Å, and C—I···I angles 92.1 (3) and 178.1 (3)°]. Such interactions, with C—I···I—C angles close to 90 and 180°, are referred to as type II or L geometry. These dipole-induced halogen-halogen interactions (Bosch & Barnes, 2002; Jetti Thallapally et al., 2000) have been used in crystal engineering. Against this background, we report here the crystal structure of triphenyl(3,4,5-triiodophenyl)methane, (I). \sch

The crystal structure of the title compound involves two molecules of (I), denoted A and B, in the asymmetric unit (Fig. 1). The phenyl rings in molecules A and B adopt different conformations in the crystal when viewed down the Csp3—CI vector (C0—I2, C0A—I2A); see Table 1 for torsion angles.

Inversion-related molecules A are connected via an I2···π interaction (3.641 Å to the midpoint of the C24—C23 bond) to form an A—A dimer. The halogen···π interaction has emerged as a persistent synthon in tri- and tetrahaloaryl inclusion host structures (Jetti et al., 2001; Rahman et al., 2002, 2003).

The I···π A—A dimers in (I) are connected to symmetry-independent molecules B via an I2A···I3 interaction [I2A···I3 3.5571 (15) Å, C4A—I2A···I3 166.21 (20)° and C5—I3···I2A 90.95 (17)°] and an I3···π interaction (3.561 Å to the midpoint of the C10A—C11A bond) (Fig. 2), such that atom I3 acts as both an acceptor and a donor group.

We note that the I···π interaction is shorter to the C—C bond midpoint than to the phenyl ring centroid. Further, the approach geometry is such that the polar δ+ region along the C—X bond points towards the δ- π cloud of the phenyl ring (Jetti et al., 2001). This is identical to the polarization-induced type II halogen···halogen geometry discussed by Bosch & Barnes (2002) and Jetti Thallapally et al., 2000). Thus, I···π and I···I type II interactions exhibit a similar approach geometry because both these interactions are electrostatic in nature.

Inversion-related B molecules in (I) do not have any significant close contacts between them.

We are currently carrying out a statistical study of halogen···π interactions in the Cambridge Structural Database to analyse the approach of the halogen atom to the C—C bond midpoint or the phenyl ring centroid. One brief conclusion is that the heavier halogens (Br or I) prefer the bond-midpoint approach, in agreement with our observations in (I).

The triphenylmethyl groups in (I) engage in intermolecular edge-to-face and vertex-to-face herringbone T motifs (Jetti Xue et al., 2000) through C—H···π interactions in the range 2.78–2.85 Å.

Experimental top

Triphenyl(3,4,5-triiodophenyl)methane, (I), was obtained as a by-product in the preparation of the aryl iodide (IV) (Jetti Xue et al., 2000) from the aryl amine (II) by diazotization and iodination (see scheme). While the exact mechanism for iodination at the meta-phenyl positions is not clear, we believe that the initially formed para-iodophenyl compound, (IV), undergoes electrophilic substitution with I2 (formed by the oxidation of KI with NaNO2) during the heating phase of the reaction, to afford the triiodo compound, (I). 4-(Triphenylmethyl)aniline, (II) (3.0 g, 9 mmol), was dissolved in concentrated HCl (9 ml) and H2O (9 ml), and the mixture was cooled in ice. NaNO2 (2.5 g, 36 mmol) was dissolved in H2O (9 ml) and cooled to 273 K. This NaNO2 solution was then added in small portions to the cooled anilinium-HCl solution and shaken well. A solution of KI (5.5 g, 33 mmol) in water (6 ml) was slowly added to the diazonium salt solution. The mixture was allowed to stand for a few hours at room temperature and then heated in a boiling water bath until gas evolution ceased (ca 15 h). The reaction mixture was cooled to room temperature and neutralized with 10% aqueous NaOH. The precipitated solid was filtered and the major compound was characterized as (4-iodophenyl)triphenylmethane, (IV) (m.p. 505 K). The minor component of the reaction product, (I), was separated by column chromatography (m.p. 483 K).

Refinement top

H atoms were included using a riding model, with a fixed C—H distance of 0.94 Å and with Uiso(H) = 1.2Ueq(C). Please check added text. It was not possible to obtain better quality crystals and thus better R values and a more appropriate weighting scheme. The residual electron density is less than 1 e Å−3 at distances of more than 1 Å from the I-atom positions.

Computing details top

Data collection: SMART (Bruker, 1997); cell refinement: SMART; data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXTL (Bruker, 2001); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.

Figures top
[Figure 1] Fig. 1. A view of the two symmetry-independent molecules, A and B, in (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 35% probability level and H atoms are shown as small spheres of arbitrary radii. Molecules A and B have different conformations in terms of their rotation about the C0—C1 (C0A—C1A) bond.
[Figure 2] Fig. 2. A packing diagram for (I), showing the I···π interaction between inversion-related molecules (A—A) in the halogen···π dimer synthon. The A—A dimers are connected through an inversion-related pair of B molecules via I···π and I···I (type II) interactions (A—B). H atoms bonded to C have been omitted for clarity. Covalent bonds in A and B molecules are shaded differently. Intermolecular interactions are given in Å.
Triphenyl(3,4,5-triiodophenyl)methane top
Crystal data top
C25H17I3Z = 4
Mr = 698.09F(000) = 1304
Triclinic, P1Dx = 2.076 Mg m3
Hall symbol: -P 1Melting point: 483 K
a = 11.567 (4) ÅMo Kα radiation, λ = 0.71073 Å
b = 12.833 (4) ÅCell parameters from 6227 reflections
c = 17.572 (6) Åθ = 2.5–28.2°
α = 108.031 (6)°µ = 4.21 mm1
β = 95.774 (6)°T = 203 K
γ = 111.805 (6)°Plate, colourless
V = 2233.0 (13) Å30.56 × 0.32 × 0.19 mm
Data collection top
Bruker SMART CCD area-detector
diffractometer
10771 independent reflections
Radiation source: fine-focus sealed tube8116 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.036
Detector resolution: 8.192 pixels mm-1θmax = 28.4°, θmin = 1.8°
ω scansh = 1515
Absorption correction: empirical (using intensity measurements)
(SADABS; Blessing, 1995)
k = 1717
Tmin = 0.212, Tmax = 0.450l = 2322
27474 measured reflections
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.059Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.184H-atom parameters constrained
S = 1.04 w = 1/[σ2(Fo2) + (0.1061P)2 + 8.9076P]
where P = (Fo2 + 2Fc2)/3
10771 reflections(Δ/σ)max = 0.001
505 parametersΔρmax = 3.74 e Å3
0 restraintsΔρmin = 2.97 e Å3
Crystal data top
C25H17I3γ = 111.805 (6)°
Mr = 698.09V = 2233.0 (13) Å3
Triclinic, P1Z = 4
a = 11.567 (4) ÅMo Kα radiation
b = 12.833 (4) ŵ = 4.21 mm1
c = 17.572 (6) ÅT = 203 K
α = 108.031 (6)°0.56 × 0.32 × 0.19 mm
β = 95.774 (6)°
Data collection top
Bruker SMART CCD area-detector
diffractometer
10771 independent reflections
Absorption correction: empirical (using intensity measurements)
(SADABS; Blessing, 1995)
8116 reflections with I > 2σ(I)
Tmin = 0.212, Tmax = 0.450Rint = 0.036
27474 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0590 restraints
wR(F2) = 0.184H-atom parameters constrained
S = 1.04Δρmax = 3.74 e Å3
10771 reflectionsΔρmin = 2.97 e Å3
505 parameters
Special details top

Experimental. Omega scan data collection with omega at 0.3 ° scan width, two runs with 740 frames, phi = 0, 270(°) and two runs with 436 frames, phi = 88, 180(°)

Bruker SADABS program multi-scan V2.03 (Blessing, 1995)

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'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 > σ(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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
I10.67441 (4)0.65232 (4)0.87897 (3)0.04441 (15)
I20.81378 (5)0.95854 (5)0.88622 (4)0.04732 (15)
I31.15151 (4)1.08391 (4)0.88198 (3)0.04028 (14)
C01.1517 (5)0.6519 (5)0.8588 (4)0.0245 (11)
C11.0656 (6)0.7194 (5)0.8657 (4)0.0244 (11)
C20.9369 (6)0.6707 (5)0.8691 (4)0.0270 (12)
H2A0.89770.59110.86740.032*
C30.8666 (6)0.7386 (6)0.8748 (4)0.0292 (12)
C40.9190 (6)0.8575 (6)0.8771 (4)0.0281 (12)
C51.0500 (6)0.9061 (5)0.8755 (4)0.0268 (12)
C61.1191 (6)0.8380 (6)0.8685 (4)0.0274 (12)
H6A1.20500.87230.86560.033*
C71.1804 (6)0.6215 (5)0.7724 (4)0.0303 (13)
C81.2591 (8)0.5631 (7)0.7548 (5)0.0434 (17)
H8A1.29940.54760.79650.052*
C91.2793 (10)0.5270 (8)0.6762 (5)0.054 (2)
H9A1.33160.48570.66520.065*
C101.2253 (11)0.5499 (8)0.6146 (6)0.065 (3)
H10A1.24250.52790.56220.078*
C111.1445 (9)0.6062 (8)0.6311 (5)0.049 (2)
H11A1.10470.62070.58860.059*
C121.1204 (7)0.6424 (7)0.7090 (4)0.0405 (16)
H12A1.06470.68010.71880.049*
C131.0852 (6)0.5254 (5)0.8656 (4)0.0265 (12)
C141.1283 (7)0.4952 (6)0.9287 (5)0.0354 (14)
H14A1.19800.55490.97260.043*
C151.0706 (7)0.3781 (7)0.9285 (5)0.0388 (16)
H15A1.10200.35960.97160.047*
C160.9683 (8)0.2907 (7)0.8654 (5)0.0434 (18)
H16A0.92990.21160.86480.052*
C170.9210 (8)0.3184 (6)0.8023 (5)0.0426 (17)
H17A0.84910.25870.75990.051*
C180.9803 (7)0.4352 (6)0.8015 (5)0.0366 (14)
H18A0.94930.45300.75780.044*
C191.2725 (6)0.7357 (5)0.9294 (4)0.0258 (11)
C201.3978 (6)0.7806 (6)0.9202 (4)0.0332 (13)
H20A1.41250.75750.86710.040*
C211.5015 (7)0.8591 (7)0.9875 (5)0.0422 (16)
H21A1.58500.88880.97960.051*
C221.4820 (7)0.8937 (7)1.0669 (5)0.0408 (16)
H22A1.55180.94551.11290.049*
C231.3586 (7)0.8504 (6)1.0765 (4)0.0372 (15)
H23A1.34450.87321.12970.045*
C241.2552 (6)0.7744 (6)1.0100 (4)0.0319 (13)
H24A1.17180.74831.01840.038*
I1A0.75055 (7)0.70015 (6)0.58410 (4)0.06328 (19)
I2A0.98721 (6)1.00433 (7)0.67589 (4)0.06284 (19)
I3A0.98113 (5)1.21282 (5)0.57529 (3)0.04652 (15)
C0A0.5474 (6)0.8244 (5)0.3487 (4)0.0262 (11)
C1A0.6603 (6)0.8738 (6)0.4247 (4)0.0307 (13)
C2A0.6681 (7)0.7929 (7)0.4617 (4)0.0355 (14)
H2AA0.60770.71140.43820.043*
C3A0.7619 (8)0.8303 (7)0.5317 (5)0.0402 (16)
C4A0.8541 (7)0.9494 (7)0.5683 (4)0.0398 (16)
C5A0.8489 (6)1.0303 (6)0.5304 (4)0.0332 (14)
C6A0.7511 (6)0.9909 (6)0.4605 (4)0.0308 (13)
H6AA0.74781.04690.43720.037*
C7A0.5774 (6)0.7555 (5)0.2706 (4)0.0287 (12)
C8A0.4943 (7)0.7194 (6)0.1931 (4)0.0335 (13)
H8AA0.42140.73540.18990.040*
C9A0.5223 (8)0.6596 (6)0.1217 (5)0.0395 (15)
H9AA0.46550.63350.07060.047*
C10A0.6269 (8)0.6379 (6)0.1232 (5)0.0410 (17)
H10B0.64290.59740.07380.049*
C11A0.7131 (7)0.6764 (6)0.1997 (5)0.0395 (16)
H11B0.78840.66410.20160.047*
C12A0.6852 (6)0.7324 (6)0.2714 (4)0.0326 (13)
H12B0.74080.75530.32230.039*
C13A0.4292 (6)0.7407 (6)0.3683 (4)0.0286 (12)
C14A0.3556 (6)0.6212 (6)0.3182 (4)0.0340 (14)
H14B0.37340.58950.26720.041*
C15A0.2550 (7)0.5455 (7)0.3414 (5)0.0398 (15)
H15B0.20740.46370.30680.048*
C16A0.2259 (7)0.5916 (7)0.4154 (5)0.0427 (17)
H16B0.15690.54200.43070.051*
C17A0.2988 (7)0.7109 (7)0.4664 (5)0.0385 (15)
H17B0.28020.74220.51720.046*
C18A0.3994 (7)0.7853 (6)0.4439 (4)0.0342 (14)
H18B0.44820.86640.47960.041*
C19A0.5257 (6)0.9286 (6)0.3320 (4)0.0281 (12)
C20A0.4177 (6)0.9508 (6)0.3421 (4)0.0328 (13)
H20B0.35520.90320.36250.039*
C21A0.4006 (8)1.0433 (7)0.3222 (5)0.0449 (17)
H21B0.32611.05510.32820.054*
C22A0.4904 (8)1.1154 (7)0.2948 (5)0.0451 (17)
H22B0.47991.17860.28320.054*
C23A0.5993 (8)1.0943 (7)0.2838 (5)0.0429 (16)
H23B0.66131.14270.26360.052*
C24A0.6161 (7)1.0035 (6)0.3023 (4)0.0352 (14)
H24B0.69020.99150.29500.042*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
I10.0332 (2)0.0329 (2)0.0582 (3)0.01097 (19)0.0164 (2)0.0078 (2)
I20.0482 (3)0.0437 (3)0.0647 (4)0.0277 (2)0.0202 (2)0.0272 (3)
I30.0386 (2)0.0251 (2)0.0555 (3)0.01102 (18)0.0050 (2)0.0182 (2)
C00.027 (3)0.020 (3)0.025 (3)0.009 (2)0.007 (2)0.007 (2)
C10.029 (3)0.025 (3)0.021 (3)0.013 (2)0.004 (2)0.010 (2)
C20.031 (3)0.021 (3)0.029 (3)0.010 (2)0.008 (2)0.011 (2)
C30.031 (3)0.026 (3)0.026 (3)0.009 (2)0.005 (2)0.008 (2)
C40.030 (3)0.028 (3)0.025 (3)0.014 (2)0.001 (2)0.009 (2)
C50.034 (3)0.019 (3)0.024 (3)0.009 (2)0.002 (2)0.008 (2)
C60.026 (3)0.027 (3)0.029 (3)0.010 (2)0.004 (2)0.013 (2)
C70.038 (3)0.021 (3)0.026 (3)0.008 (2)0.011 (2)0.007 (2)
C80.064 (5)0.035 (4)0.035 (4)0.025 (4)0.023 (3)0.009 (3)
C90.089 (7)0.047 (5)0.043 (5)0.041 (5)0.037 (5)0.017 (4)
C100.095 (7)0.048 (5)0.040 (5)0.019 (5)0.034 (5)0.011 (4)
C110.061 (5)0.051 (5)0.025 (3)0.011 (4)0.009 (3)0.016 (3)
C120.039 (4)0.035 (4)0.033 (4)0.004 (3)0.008 (3)0.009 (3)
C130.031 (3)0.023 (3)0.026 (3)0.015 (2)0.010 (2)0.006 (2)
C140.045 (4)0.036 (4)0.040 (4)0.025 (3)0.019 (3)0.020 (3)
C150.052 (4)0.039 (4)0.044 (4)0.027 (3)0.025 (3)0.025 (3)
C160.056 (4)0.031 (4)0.059 (5)0.025 (3)0.034 (4)0.023 (3)
C170.047 (4)0.025 (3)0.051 (4)0.013 (3)0.015 (3)0.011 (3)
C180.042 (4)0.024 (3)0.044 (4)0.015 (3)0.010 (3)0.012 (3)
C190.031 (3)0.023 (3)0.024 (3)0.014 (2)0.006 (2)0.008 (2)
C200.034 (3)0.039 (4)0.029 (3)0.015 (3)0.012 (3)0.015 (3)
C210.029 (3)0.049 (4)0.049 (4)0.013 (3)0.010 (3)0.022 (4)
C220.038 (3)0.038 (4)0.038 (4)0.014 (3)0.007 (3)0.010 (3)
C230.046 (4)0.037 (4)0.029 (3)0.023 (3)0.003 (3)0.009 (3)
C240.034 (3)0.033 (3)0.030 (3)0.019 (3)0.008 (3)0.008 (3)
I1A0.0868 (5)0.0682 (4)0.0534 (4)0.0454 (4)0.0150 (3)0.0319 (3)
I2A0.0518 (3)0.0753 (4)0.0500 (3)0.0245 (3)0.0005 (3)0.0157 (3)
I3A0.0349 (2)0.0432 (3)0.0455 (3)0.0141 (2)0.00098 (19)0.0026 (2)
C0A0.026 (3)0.026 (3)0.024 (3)0.011 (2)0.004 (2)0.007 (2)
C1A0.034 (3)0.035 (3)0.024 (3)0.017 (3)0.008 (2)0.009 (3)
C2A0.038 (3)0.037 (4)0.034 (3)0.020 (3)0.007 (3)0.012 (3)
C3A0.051 (4)0.049 (4)0.033 (4)0.031 (4)0.012 (3)0.019 (3)
C4A0.034 (3)0.060 (5)0.031 (3)0.029 (3)0.007 (3)0.012 (3)
C5A0.026 (3)0.040 (4)0.025 (3)0.014 (3)0.002 (2)0.003 (3)
C6A0.031 (3)0.033 (3)0.025 (3)0.015 (3)0.005 (2)0.005 (3)
C7A0.034 (3)0.023 (3)0.027 (3)0.012 (2)0.007 (2)0.008 (2)
C8A0.038 (3)0.033 (3)0.029 (3)0.017 (3)0.008 (3)0.009 (3)
C9A0.051 (4)0.030 (3)0.030 (3)0.012 (3)0.009 (3)0.008 (3)
C10A0.063 (5)0.030 (3)0.036 (4)0.023 (3)0.027 (3)0.011 (3)
C11A0.048 (4)0.030 (3)0.049 (4)0.022 (3)0.026 (3)0.014 (3)
C12A0.038 (3)0.035 (3)0.034 (3)0.022 (3)0.013 (3)0.015 (3)
C13A0.028 (3)0.030 (3)0.027 (3)0.012 (2)0.006 (2)0.010 (2)
C14A0.034 (3)0.033 (3)0.028 (3)0.011 (3)0.006 (3)0.008 (3)
C15A0.037 (3)0.034 (4)0.042 (4)0.008 (3)0.001 (3)0.018 (3)
C16A0.038 (4)0.050 (4)0.041 (4)0.013 (3)0.013 (3)0.025 (4)
C17A0.039 (3)0.048 (4)0.034 (4)0.020 (3)0.012 (3)0.018 (3)
C18A0.036 (3)0.033 (3)0.030 (3)0.013 (3)0.009 (3)0.009 (3)
C19A0.031 (3)0.027 (3)0.020 (3)0.010 (2)0.002 (2)0.004 (2)
C20A0.034 (3)0.034 (3)0.030 (3)0.018 (3)0.006 (2)0.009 (3)
C21A0.054 (4)0.040 (4)0.039 (4)0.028 (4)0.003 (3)0.005 (3)
C22A0.061 (5)0.033 (4)0.039 (4)0.023 (4)0.006 (3)0.008 (3)
C23A0.049 (4)0.031 (4)0.038 (4)0.009 (3)0.005 (3)0.011 (3)
C24A0.034 (3)0.033 (3)0.030 (3)0.011 (3)0.007 (3)0.006 (3)
Geometric parameters (Å, º) top
I1—C32.104 (6)I1A—C3A2.114 (7)
I2—C42.066 (6)I2A—C4A2.055 (7)
I3—C52.103 (6)I3A—C5A2.097 (7)
C0—C191.536 (9)C0A—C7A1.537 (8)
C0—C11.535 (8)C0A—C13A1.541 (8)
C0—C71.548 (8)C0A—C1A1.550 (9)
C0—C131.567 (8)C0A—C19A1.554 (9)
C1—C61.396 (8)C1A—C6A1.366 (9)
C1—C21.400 (8)C1A—C2A1.409 (10)
C2—C31.385 (9)C2A—C3A1.378 (10)
C2—H2A0.9400C2A—H2AA0.9400
C3—C41.402 (9)C3A—C4A1.389 (12)
C4—C51.416 (9)C4A—C5A1.411 (11)
C5—C61.375 (9)C5A—C6A1.399 (9)
C6—H6A0.9400C6A—H6AA0.9400
C7—C81.380 (10)C7A—C12A1.384 (9)
C7—C121.399 (11)C7A—C8A1.416 (9)
C8—C91.388 (10)C8A—C9A1.392 (10)
C8—H8A0.9400C8A—H8AA0.9400
C9—C101.357 (15)C9A—C10A1.338 (11)
C9—H9A0.9400C9A—H9AA0.9400
C10—C111.381 (15)C10A—C11A1.414 (12)
C10—H10A0.9400C10A—H10B0.9400
C11—C121.396 (10)C11A—C12A1.378 (9)
C11—H11A0.9400C11A—H11B0.9400
C12—H12A0.9400C12A—H12B0.9400
C13—C141.387 (10)C13A—C14A1.376 (9)
C13—C181.398 (10)C13A—C18A1.407 (9)
C14—C151.398 (9)C14A—C15A1.402 (10)
C14—H14A0.9400C14A—H14B0.9400
C15—C161.367 (12)C15A—C16A1.384 (11)
C15—H15A0.9400C15A—H15B0.9400
C16—C171.386 (12)C16A—C17A1.378 (11)
C16—H16A0.9400C16A—H16B0.9400
C17—C181.403 (9)C17A—C18A1.387 (10)
C17—H17A0.9400C17A—H17B0.9400
C18—H18A0.9400C18A—H18B0.9400
C19—C201.394 (9)C19A—C20A1.397 (9)
C19—C241.409 (9)C19A—C24A1.401 (9)
C20—C211.391 (11)C20A—C21A1.410 (10)
C20—H20A0.9400C20A—H20B0.9400
C21—C221.396 (11)C21A—C22A1.352 (12)
C21—H21A0.9400C21A—H21B0.9400
C22—C231.376 (11)C22A—C23A1.402 (12)
C22—H22A0.9400C22A—H22B0.9400
C23—C241.376 (10)C23A—C24A1.376 (11)
C23—H23A0.9400C23A—H23B0.9400
C24—H24A0.9400C24A—H24B0.9400
I2A···I33.5571 (15)C23ii···I23.649 (8)
C10Ai···I33.574 (8)
C4A—I2A—I3166.2 (2)C19—C24—H24A119.5
C5—I3—I2A90.95 (17)C7A—C0A—C13A111.6 (5)
C19—C0—C1105.4 (5)C7A—C0A—C1A110.3 (5)
C19—C0—C7113.4 (5)C13A—C0A—C1A105.7 (5)
C1—C0—C7110.7 (5)C7A—C0A—C19A106.0 (5)
C19—C0—C13110.9 (5)C13A—C0A—C19A111.8 (5)
C1—C0—C13112.7 (5)C1A—C0A—C19A111.6 (5)
C7—C0—C13104.0 (5)C6A—C1A—C2A117.1 (6)
C6—C1—C2117.4 (5)C6A—C1A—C0A125.1 (6)
C6—C1—C0117.8 (5)C2A—C1A—C0A117.7 (6)
C2—C1—C0124.8 (5)C3A—C2A—C1A121.6 (7)
C3—C2—C1120.6 (5)C3A—C2A—H2AA119.2
C3—C2—H2A119.7C1A—C2A—H2AA119.2
C1—C2—H2A119.7C2A—C3A—C4A121.4 (7)
C2—C3—C4122.6 (6)C2A—C3A—I1A116.5 (6)
C2—C3—I1116.0 (4)C4A—C3A—I1A122.0 (5)
C4—C3—I1121.4 (5)C3A—C4A—C5A117.3 (6)
C3—C4—C5116.0 (6)C3A—C4A—I2A120.4 (6)
C3—C4—I2122.3 (5)C5A—C4A—I2A122.2 (6)
C5—C4—I2121.7 (4)C6A—C5A—C4A120.3 (6)
C6—C5—C4121.4 (5)C6A—C5A—I3A116.7 (5)
C6—C5—I3115.5 (4)C4A—C5A—I3A123.0 (5)
C4—C5—I3123.1 (4)C1A—C6A—C5A122.2 (6)
C5—C6—C1122.0 (6)C1A—C6A—H6AA118.8
C5—C6—H6A119.0C5A—C6A—H6AA118.9
C1—C6—H6A119.0C12A—C7A—C8A118.0 (6)
C8—C7—C12118.6 (6)C12A—C7A—C0A123.5 (6)
C8—C7—C0119.3 (6)C8A—C7A—C0A118.4 (6)
C12—C7—C0121.9 (6)C9A—C8A—C7A118.9 (7)
C7—C8—C9120.7 (8)C9A—C8A—H8AA120.5
C7—C8—H8A119.7C7A—C8A—H8AA120.5
C9—C8—H8A119.6C10A—C9A—C8A122.5 (7)
C10—C9—C8121.6 (9)C10A—C9A—H9AA118.8
C10—C9—H9A119.1C8A—C9A—H9AA118.7
C8—C9—H9A119.2C9A—C10A—C11A119.5 (6)
C9—C10—C11118.1 (8)C9A—C10A—H10B120.3
C9—C10—H10A120.9C11A—C10A—H10B120.3
C11—C10—H10A120.9C12A—C11A—C10A119.0 (7)
C10—C11—C12121.8 (8)C12A—C11A—H11B120.6
C10—C11—H11A119.1C10A—C11A—H11B120.5
C12—C11—H11A119.1C11A—C12A—C7A122.0 (7)
C11—C12—C7119.1 (8)C11A—C12A—H12B119.0
C11—C12—H12A120.5C7A—C12A—H12B119.0
C7—C12—H12A120.5C14A—C13A—C18A117.6 (6)
C14—C13—C18118.1 (6)C14A—C13A—C0A123.5 (6)
C14—C13—C0124.2 (6)C18A—C13A—C0A118.7 (6)
C18—C13—C0117.7 (6)C13A—C14A—C15A121.6 (6)
C13—C14—C15121.6 (7)C13A—C14A—H14B119.2
C13—C14—H14A119.2C15A—C14A—H14B119.2
C15—C14—H14A119.2C16A—C15A—C14A119.8 (7)
C16—C15—C14119.8 (7)C16A—C15A—H15B120.1
C16—C15—H15A120.1C14A—C15A—H15B120.1
C14—C15—H15A120.1C17A—C16A—C15A119.3 (7)
C15—C16—C17120.1 (7)C17A—C16A—H16B120.3
C15—C16—H16A120.0C15A—C16A—H16B120.3
C17—C16—H16A120.0C16A—C17A—C18A120.8 (7)
C16—C17—C18120.3 (7)C16A—C17A—H17B119.6
C16—C17—H17A119.9C18A—C17A—H17B119.6
C18—C17—H17A119.9C17A—C18A—C13A120.8 (6)
C13—C18—C17120.2 (7)C17A—C18A—H18B119.6
C13—C18—H18A119.9C13A—C18A—H18B119.6
C17—C18—H18A119.9C20A—C19A—C24A116.8 (6)
C20—C19—C24117.1 (6)C20A—C19A—C0A123.9 (6)
C20—C19—C0125.4 (5)C24A—C19A—C0A119.3 (6)
C24—C19—C0117.5 (5)C19A—C20A—C21A121.2 (7)
C21—C20—C19121.5 (6)C19A—C20A—H20B119.4
C21—C20—H20A119.2C21A—C20A—H20B119.4
C19—C20—H20A119.2C22A—C21A—C20A120.8 (7)
C20—C21—C22120.2 (6)C22A—C21A—H21B119.6
C20—C21—H21A119.9C20A—C21A—H21B119.6
C22—C21—H21A119.9C21A—C22A—C23A119.0 (7)
C23—C22—C21118.6 (7)C21A—C22A—H22B120.5
C23—C22—H22A120.7C23A—C22A—H22B120.5
C21—C22—H22A120.7C24A—C23A—C22A120.6 (7)
C22—C23—C24121.6 (7)C24A—C23A—H23B119.6
C22—C23—H23A119.2C22A—C23A—H23B119.7
C24—C23—H23A119.2C23A—C24A—C19A121.6 (7)
C23—C24—C19121.0 (6)C23A—C24A—H24B119.2
C23—C24—H24A119.5C19A—C24A—H24B119.1
C2—C1—C0—C7109.6 (7)C2A—C1A—C0A—C7A80.5 (8)
C2—C1—C0—C19127.5 (7)C2A—C1A—C0A—C19A162.0 (6)
C2—C1—C0—C136.3 (9)C2A—C1A—C0A—C13A40.3 (8)
C6—C1—C0—C1952.8 (7)C6A—C1A—C0A—C19A15.9 (10)
C6—C1—C0—C13174.0 (6)C6A—C1A—C0A—C13A137.6 (7)
C6—C1—C0—C770.1 (7)C6A—C1A—C0A—C7A101.6 (8)
Symmetry codes: (i) x+2, y+2, z+1; (ii) x+2, y+2, z+2.

Experimental details

Crystal data
Chemical formulaC25H17I3
Mr698.09
Crystal system, space groupTriclinic, P1
Temperature (K)203
a, b, c (Å)11.567 (4), 12.833 (4), 17.572 (6)
α, β, γ (°)108.031 (6), 95.774 (6), 111.805 (6)
V3)2233.0 (13)
Z4
Radiation typeMo Kα
µ (mm1)4.21
Crystal size (mm)0.56 × 0.32 × 0.19
Data collection
DiffractometerBruker SMART CCD area-detector
diffractometer
Absorption correctionEmpirical (using intensity measurements)
(SADABS; Blessing, 1995)
Tmin, Tmax0.212, 0.450
No. of measured, independent and
observed [I > 2σ(I)] reflections
27474, 10771, 8116
Rint0.036
(sin θ/λ)max1)0.669
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.059, 0.184, 1.04
No. of reflections10771
No. of parameters505
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)3.74, 2.97

Computer programs: SMART (Bruker, 1997), SMART, SAINT (Bruker, 2000), SHELXTL (Bruker, 2001), SHELXTL.

Selected geometric parameters (Å, º) top
I2A···I33.5571 (15)C23ii···I23.649 (8)
C10Ai···I33.574 (8)
C4A—I2A—I3166.2 (2)C5—I3—I2A90.95 (17)
C2—C1—C0—C7109.6 (7)C2A—C1A—C0A—C7A80.5 (8)
C2—C1—C0—C19127.5 (7)C2A—C1A—C0A—C19A162.0 (6)
C2—C1—C0—C136.3 (9)C2A—C1A—C0A—C13A40.3 (8)
C6—C1—C0—C1952.8 (7)C6A—C1A—C0A—C19A15.9 (10)
C6—C1—C0—C13174.0 (6)C6A—C1A—C0A—C13A137.6 (7)
C6—C1—C0—C770.1 (7)C6A—C1A—C0A—C7A101.6 (8)
Symmetry codes: (i) x+2, y+2, z+1; (ii) x+2, y+2, z+2.
 

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