organic compounds
1,3,5-Tris(2H-tetrazol-5-ylmethoxy)benzene
aOrdered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China
*Correspondence e-mail: hyye@seu.edu.cn
The title compound, C12H12N12O3, was obtained by the hydrothermal reaction of 1,3,5-tricyanomethoxybenzene and (CH3)3SiN3. The molecule is almost planar, with an r.m.s. deviation of 0.0976 Å from the plane through all atoms in the molecule. The three tetrazole rings make dihedral angles of 13.09 (19), 2.01 (19) and 11.56 (18)° with one another and corresponding angles of 8.66 (17), 5.44 (16) and 3.51 (17)° with the central benzene ring. In the intermolecular N—H⋯N hydrogen bonds form well separated one-dimensional planar sheets.
Related literature
For the use of tetrazole derivatives in coordination chemisty, see: Arp et al. (2000); Hu et al. (2007); Wang et al. (2005); Xiong et al. (2002).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL/PC (Sheldrick, 1999); software used to prepare material for publication: SHELXTL/PC.
Supporting information
https://doi.org/10.1107/S1600536807062733/sj2442sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807062733/sj2442Isup2.hkl
A mixture of benzene-1,3,5-triol (2.5 g, 0.02 mol), 10 g K2CO3, 30 ml and acetone 2-bromoacetonitrile (8.6 g, 0.023 mol) was refluxed overnight. After cooling, the resulting dark mixture was extracted with ether (30 ml), and then the extract was removed at reduced pressure to give a pale yellow solid crude product, which was recrystallized in ethanol to obtain white 1,3,5-tricyanomethoxy-benzene (2.4 g, 0.01 mol). A mixture of 1,3,5-tricyanomethoxy-benzene (24 mg, 0.1 mmol) and (CH3)3SiN3 (67 mg, 0.6 mmol), ethanol (0.8 ml) and water (0.4 ml) was sealed in a Pyrex tube at 110 °C for one day. On cooling to room temperature, pale yellow block-like crystals suitable for X-ray analysis were obtained.
Positional parameters of all H atoms bonded to C were calculated geometrically and allowed to ride on the C atoms to which they are bound, with d(C—H) = 0.93 Å for sp2 or d(C—H) = 0.97Å for sp3 and Uiso(H) = 1.2Ueq(C). The N—H hydrogen atoms of tetrazole rings were located in a difference Fourier map and refined freely with isotropic temperature factors.
In the past five years, we have focused on the chemistry of tetrazole derivatives 5 because of their multiple coordination modes as ligands to metal ions and for the construction of novel metal-organic frameworks (Wang, et al. 2005; Xiong, et al. 2002). We report here the
of the title compound, 1,3,5-tris((2H-tetrazol-5-yl)methoxy)benzene (I), (Fig.1).In I, there are three chemically equivalent tetrazole moieties. The bond distances and bond angles of the three tetrazole rings are in the usual ranges (Wang, et al. 2005; ARP, et al. 2000; Hu, et al. 2007). The molecule is almost planar with an r.m.s. deviation of 0.0976 Å from the plane through all atoms in the molecule. Dihedral angles between the C8 and C10, C10 and C12 and C8 and C12 tetrazole rings are 13.56 (15), 2.01 (19) & 11.56 (18)°, respectively. Dihedral angles between the benzene ring and the C8, C10 and C12 tetrazole rings are 8.66 (17), 5.44 (16) & 3.51 (17)°, respectively. In each tetrazole ring, one N=N bond (N2=N3, N6=N7, and N10=N11), is distinctly shorter than the other two N—N distances (Table I). In the
inversion related N1—H1A···N7i, N5—H5A···N10ii, and N12—H12Aiii···N3 hydrogen bonds link the molecules into infinite planar sheets. (Symmetry codes: (i) -x + 2, -y - 1, -z + 1; (ii) -x, -y, -z + 1; (iii) -x + 2, -y, -z + 2.) (Fig.2).For the use of tetrazole derivatives in coordination chemisty, see: ARP et al. (2000); Hu et al. (2007); Wang et al. (2005); Xiong et al. (2002).
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Sheldrick, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 1999).C12H12N12O3 | Z = 2 |
Mr = 372.34 | F(000) = 384 |
Triclinic, P1 | Dx = 1.531 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 4.9851 (4) Å | Cell parameters from 1880 reflections |
b = 11.8822 (7) Å | θ = 3.1–27.5° |
c = 14.1349 (13) Å | µ = 0.12 mm−1 |
α = 99.60 (3)° | T = 293 K |
β = 92.87 (2)° | Block, colorless |
γ = 100.943 (15)° | 0.25 × 0.2 × 0.12 mm |
V = 807.64 (11) Å3 |
Rigaku Mercury2 (2 × 2 bin mode) diffractometer | 3686 independent reflections |
Radiation source: fine-focus sealed tube | 2653 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.036 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 27.5°, θmin = 3.1° |
ω scans | h = −6→6 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −15→15 |
Tmin = 0.891, Tmax = 1 | l = −18→18 |
8398 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)] = 0.054 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.149 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0711P)2 + 0.2604P] where P = (Fo2 + 2Fc2)/3 |
3686 reflections | (Δ/σ)max < 0.001 |
256 parameters | Δρmax = 0.53 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
C12H12N12O3 | γ = 100.943 (15)° |
Mr = 372.34 | V = 807.64 (11) Å3 |
Triclinic, P1 | Z = 2 |
a = 4.9851 (4) Å | Mo Kα radiation |
b = 11.8822 (7) Å | µ = 0.12 mm−1 |
c = 14.1349 (13) Å | T = 293 K |
α = 99.60 (3)° | 0.25 × 0.2 × 0.12 mm |
β = 92.87 (2)° |
Rigaku Mercury2 (2 × 2 bin mode) diffractometer | 3686 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 2653 reflections with I > 2σ(I) |
Tmin = 0.891, Tmax = 1 | Rint = 0.036 |
8398 measured reflections |
R[F2 > 2σ(F2)] = 0.054 | 0 restraints |
wR(F2) = 0.149 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.53 e Å−3 |
3686 reflections | Δρmin = −0.23 e Å−3 |
256 parameters |
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. |
x | y | z | Uiso*/Ueq | ||
O1 | 0.4944 (3) | 0.29164 (13) | 0.81580 (10) | 0.0364 (4) | |
O2 | 0.0878 (3) | 0.18419 (13) | 0.49413 (10) | 0.0343 (4) | |
O3 | −0.1336 (3) | 0.50558 (12) | 0.70463 (9) | 0.0309 (4) | |
N1 | 0.8441 (5) | 0.23109 (18) | 0.93683 (14) | 0.0450 (6) | |
N2 | 1.0188 (5) | 0.21973 (19) | 1.00837 (15) | 0.0543 (6) | |
N3 | 1.0297 (4) | 0.30962 (18) | 1.07529 (13) | 0.0435 (5) | |
N4 | 0.8662 (4) | 0.38061 (17) | 1.04861 (13) | 0.0419 (5) | |
N5 | 0.0149 (4) | 0.07285 (16) | 0.31051 (12) | 0.0338 (4) | |
N6 | 0.0071 (4) | 0.00274 (18) | 0.22479 (13) | 0.0433 (5) | |
N7 | 0.1856 (4) | −0.06057 (17) | 0.23524 (13) | 0.0426 (5) | |
N8 | 0.3127 (4) | −0.03434 (16) | 0.32650 (12) | 0.0369 (5) | |
N9 | −0.6125 (4) | 0.66664 (15) | 0.62247 (12) | 0.0329 (4) | |
N10 | −0.6780 (4) | 0.75385 (16) | 0.68837 (13) | 0.0363 (5) | |
N11 | −0.5411 (4) | 0.76527 (16) | 0.77066 (13) | 0.0381 (5) | |
N12 | −0.3816 (4) | 0.68545 (16) | 0.75912 (13) | 0.0318 (4) | |
C1 | 0.3201 (4) | 0.31401 (17) | 0.74592 (14) | 0.0260 (4) | |
C2 | 0.3001 (4) | 0.23846 (17) | 0.65792 (14) | 0.0276 (5) | |
H2A | 0.3999 | 0.1794 | 0.6492 | 0.033* | |
C3 | 0.1271 (4) | 0.25444 (17) | 0.58426 (13) | 0.0248 (4) | |
C4 | −0.0233 (4) | 0.34265 (17) | 0.59459 (13) | 0.0251 (4) | |
H4A | −0.1373 | 0.3525 | 0.5438 | 0.030* | |
C5 | 0.0037 (4) | 0.41535 (16) | 0.68380 (13) | 0.0235 (4) | |
C6 | 0.1764 (4) | 0.40318 (17) | 0.76073 (13) | 0.0262 (4) | |
H6A | 0.1941 | 0.4533 | 0.8197 | 0.031* | |
C7 | 0.5606 (5) | 0.37403 (19) | 0.90189 (14) | 0.0337 (5) | |
H7B | 0.3966 | 0.3825 | 0.9342 | 0.040* | |
H7C | 0.6471 | 0.4494 | 0.8885 | 0.040* | |
C8 | 0.7525 (4) | 0.32884 (18) | 0.96283 (14) | 0.0304 (5) | |
C9 | 0.2734 (4) | 0.10828 (18) | 0.47337 (14) | 0.0288 (5) | |
H9B | 0.2553 | 0.0514 | 0.5158 | 0.035* | |
H9C | 0.4608 | 0.1520 | 0.4819 | 0.035* | |
C10 | 0.2012 (4) | 0.04925 (17) | 0.37119 (14) | 0.0271 (4) | |
C11 | −0.2956 (4) | 0.52921 (18) | 0.62784 (14) | 0.0278 (5) | |
H11A | −0.4333 | 0.4607 | 0.6002 | 0.033* | |
H11B | −0.1816 | 0.5516 | 0.5777 | 0.033* | |
C12 | −0.4281 (4) | 0.62620 (17) | 0.66905 (14) | 0.0256 (4) | |
H12A | −0.268 (5) | 0.681 (2) | 0.8099 (19) | 0.048 (7)* | |
H5A | −0.090 (7) | 0.126 (3) | 0.318 (2) | 0.077 (10)* | |
H1A | 0.808 (6) | 0.176 (3) | 0.882 (2) | 0.064 (9)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0490 (9) | 0.0375 (8) | 0.0236 (7) | 0.0275 (7) | −0.0165 (7) | −0.0079 (6) |
O2 | 0.0413 (9) | 0.0390 (8) | 0.0234 (7) | 0.0269 (7) | −0.0091 (6) | −0.0103 (6) |
O3 | 0.0391 (8) | 0.0347 (8) | 0.0221 (7) | 0.0253 (7) | −0.0067 (6) | −0.0033 (6) |
N1 | 0.0618 (14) | 0.0433 (11) | 0.0291 (10) | 0.0286 (10) | −0.0201 (9) | −0.0090 (9) |
N2 | 0.0733 (16) | 0.0548 (13) | 0.0368 (11) | 0.0376 (12) | −0.0231 (11) | −0.0061 (10) |
N3 | 0.0542 (13) | 0.0512 (12) | 0.0267 (10) | 0.0262 (10) | −0.0139 (9) | −0.0014 (9) |
N4 | 0.0558 (13) | 0.0448 (11) | 0.0241 (9) | 0.0238 (10) | −0.0154 (9) | −0.0069 (8) |
N5 | 0.0411 (11) | 0.0361 (10) | 0.0257 (9) | 0.0227 (9) | −0.0054 (8) | −0.0046 (8) |
N6 | 0.0566 (13) | 0.0449 (11) | 0.0283 (10) | 0.0256 (10) | −0.0070 (9) | −0.0086 (8) |
N7 | 0.0576 (13) | 0.0404 (11) | 0.0303 (10) | 0.0252 (10) | −0.0025 (9) | −0.0078 (8) |
N8 | 0.0483 (12) | 0.0362 (10) | 0.0279 (9) | 0.0245 (9) | −0.0041 (8) | −0.0051 (8) |
N9 | 0.0360 (10) | 0.0357 (10) | 0.0305 (9) | 0.0208 (8) | −0.0076 (8) | 0.0030 (8) |
N10 | 0.0386 (11) | 0.0351 (10) | 0.0391 (10) | 0.0221 (8) | −0.0043 (8) | 0.0034 (8) |
N11 | 0.0452 (11) | 0.0385 (10) | 0.0338 (10) | 0.0251 (9) | −0.0039 (8) | −0.0009 (8) |
N12 | 0.0381 (10) | 0.0347 (10) | 0.0258 (9) | 0.0218 (8) | −0.0064 (8) | 0.0002 (7) |
C1 | 0.0287 (10) | 0.0285 (10) | 0.0215 (9) | 0.0131 (8) | −0.0066 (8) | 0.0010 (8) |
C2 | 0.0317 (11) | 0.0266 (10) | 0.0254 (10) | 0.0161 (8) | −0.0037 (8) | −0.0026 (8) |
C3 | 0.0275 (10) | 0.0260 (10) | 0.0194 (9) | 0.0097 (8) | −0.0031 (8) | −0.0032 (8) |
C4 | 0.0262 (10) | 0.0293 (10) | 0.0205 (9) | 0.0127 (8) | −0.0050 (8) | 0.0011 (8) |
C5 | 0.0241 (10) | 0.0246 (10) | 0.0238 (9) | 0.0131 (8) | 0.0004 (8) | 0.0013 (8) |
C6 | 0.0314 (11) | 0.0290 (10) | 0.0183 (9) | 0.0136 (8) | −0.0053 (8) | −0.0022 (8) |
C7 | 0.0420 (12) | 0.0352 (12) | 0.0234 (10) | 0.0191 (10) | −0.0117 (9) | −0.0048 (9) |
C8 | 0.0375 (12) | 0.0319 (11) | 0.0219 (10) | 0.0158 (9) | −0.0064 (9) | −0.0028 (8) |
C9 | 0.0341 (11) | 0.0279 (10) | 0.0254 (10) | 0.0156 (9) | −0.0024 (8) | −0.0020 (8) |
C10 | 0.0317 (11) | 0.0247 (10) | 0.0261 (10) | 0.0122 (8) | −0.0013 (8) | 0.0015 (8) |
C11 | 0.0313 (11) | 0.0333 (11) | 0.0216 (10) | 0.0176 (9) | −0.0044 (8) | 0.0017 (8) |
C12 | 0.0272 (10) | 0.0269 (10) | 0.0235 (9) | 0.0099 (8) | −0.0036 (8) | 0.0032 (8) |
O1—C1 | 1.375 (2) | N11—N12 | 1.344 (2) |
O1—C7 | 1.410 (2) | N12—C12 | 1.334 (3) |
O2—C3 | 1.384 (2) | N12—H12A | 0.91 (3) |
O2—C9 | 1.418 (2) | C1—C6 | 1.382 (3) |
O3—C5 | 1.378 (2) | C1—C2 | 1.394 (3) |
O3—C11 | 1.417 (2) | C2—C3 | 1.379 (3) |
N1—C8 | 1.330 (3) | C2—H2A | 0.9300 |
N1—N2 | 1.342 (3) | C3—C4 | 1.393 (3) |
N1—H1A | 0.92 (3) | C4—C5 | 1.389 (3) |
N2—N3 | 1.294 (3) | C4—H4A | 0.9300 |
N3—N4 | 1.362 (3) | C5—C6 | 1.397 (3) |
N4—C8 | 1.312 (3) | C6—H6A | 0.9300 |
N5—C10 | 1.333 (3) | C7—C8 | 1.488 (3) |
N5—N6 | 1.345 (2) | C7—H7B | 0.9700 |
N5—H5A | 0.89 (3) | C7—H7C | 0.9700 |
N6—N7 | 1.288 (3) | C9—C10 | 1.490 (3) |
N7—N8 | 1.368 (2) | C9—H9B | 0.9700 |
N8—C10 | 1.315 (3) | C9—H9C | 0.9700 |
N9—C12 | 1.312 (2) | C11—C12 | 1.486 (3) |
N9—N10 | 1.373 (2) | C11—H11A | 0.9700 |
N10—N11 | 1.292 (3) | C11—H11B | 0.9700 |
C1—O1—C7 | 117.89 (15) | O3—C5—C4 | 123.76 (16) |
C3—O2—C9 | 116.70 (15) | O3—C5—C6 | 113.94 (16) |
C5—O3—C11 | 117.10 (15) | C4—C5—C6 | 122.29 (17) |
C8—N1—N2 | 108.52 (18) | C1—C6—C5 | 117.55 (17) |
C8—N1—H1A | 131.7 (18) | C1—C6—H6A | 121.2 |
N2—N1—H1A | 119.7 (18) | C5—C6—H6A | 121.2 |
N3—N2—N1 | 106.11 (18) | O1—C7—C8 | 106.33 (16) |
N2—N3—N4 | 110.95 (17) | O1—C7—H7B | 110.5 |
C8—N4—N3 | 105.18 (17) | C8—C7—H7B | 110.5 |
C10—N5—N6 | 108.75 (17) | O1—C7—H7C | 110.5 |
C10—N5—H5A | 131 (2) | C8—C7—H7C | 110.5 |
N6—N5—H5A | 120 (2) | H7B—C7—H7C | 108.7 |
N7—N6—N5 | 105.78 (17) | N4—C8—N1 | 109.23 (18) |
N6—N7—N8 | 111.65 (17) | N4—C8—C7 | 125.76 (18) |
C10—N8—N7 | 104.66 (17) | N1—C8—C7 | 124.96 (17) |
C12—N9—N10 | 105.02 (16) | O2—C9—C10 | 106.34 (16) |
N11—N10—N9 | 111.16 (16) | O2—C9—H9B | 110.5 |
N10—N11—N12 | 105.82 (17) | C10—C9—H9B | 110.5 |
C12—N12—N11 | 109.01 (16) | O2—C9—H9C | 110.5 |
C12—N12—H12A | 132.7 (17) | C10—C9—H9C | 110.5 |
N11—N12—H12A | 118.2 (17) | H9B—C9—H9C | 108.7 |
O1—C1—C6 | 123.45 (17) | N8—C10—N5 | 109.17 (17) |
O1—C1—C2 | 114.07 (16) | N8—C10—C9 | 125.23 (18) |
C6—C1—C2 | 122.48 (17) | N5—C10—C9 | 125.60 (17) |
C3—C2—C1 | 117.63 (17) | O3—C11—C12 | 106.70 (15) |
C3—C2—H2A | 121.2 | O3—C11—H11A | 110.4 |
C1—C2—H2A | 121.2 | C12—C11—H11A | 110.4 |
C2—C3—O2 | 122.91 (17) | O3—C11—H11B | 110.4 |
C2—C3—C4 | 122.66 (17) | C12—C11—H11B | 110.4 |
O2—C3—C4 | 114.43 (16) | H11A—C11—H11B | 108.6 |
C5—C4—C3 | 117.38 (17) | N9—C12—N12 | 108.99 (17) |
C5—C4—H4A | 121.3 | N9—C12—C11 | 125.19 (17) |
C3—C4—H4A | 121.3 | N12—C12—C11 | 125.81 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···N7i | 0.92 (3) | 1.97 (3) | 2.872 (3) | 168 (3) |
N5—H5A···N10ii | 0.89 (3) | 2.01 (3) | 2.892 (2) | 171 (3) |
N12—H12A···N3iii | 0.91 (3) | 1.94 (3) | 2.840 (3) | 174 (2) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x−1, −y+1, −z+1; (iii) −x+1, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C12H12N12O3 |
Mr | 372.34 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 4.9851 (4), 11.8822 (7), 14.1349 (13) |
α, β, γ (°) | 99.60 (3), 92.87 (2), 100.943 (15) |
V (Å3) | 807.64 (11) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.25 × 0.2 × 0.12 |
Data collection | |
Diffractometer | Rigaku Mercury2 (2 × 2 bin mode) |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.891, 1 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8398, 3686, 2653 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.054, 0.149, 1.05 |
No. of reflections | 3686 |
No. of parameters | 256 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.53, −0.23 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Sheldrick, 1999).
N1—C8 | 1.330 (3) | N7—N8 | 1.368 (2) |
N1—N2 | 1.342 (3) | N8—C10 | 1.315 (3) |
N2—N3 | 1.294 (3) | N9—C12 | 1.312 (2) |
N3—N4 | 1.362 (3) | N9—N10 | 1.373 (2) |
N4—C8 | 1.312 (3) | N10—N11 | 1.292 (3) |
N5—C10 | 1.333 (3) | N11—N12 | 1.344 (2) |
N5—N6 | 1.345 (2) | N12—C12 | 1.334 (3) |
N6—N7 | 1.288 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···N7i | 0.92 (3) | 1.97 (3) | 2.872 (3) | 168 (3) |
N5—H5A···N10ii | 0.89 (3) | 2.01 (3) | 2.892 (2) | 171 (3) |
N12—H12A···N3iii | 0.91 (3) | 1.94 (3) | 2.840 (3) | 174 (2) |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) −x−1, −y+1, −z+1; (iii) −x+1, −y+1, −z+2. |
Acknowledgements
This work was supported by a start-up grant from Southeast University to Professor Ren-Gen Xiong.
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In the past five years, we have focused on the chemistry of tetrazole derivatives 5 because of their multiple coordination modes as ligands to metal ions and for the construction of novel metal-organic frameworks (Wang, et al. 2005; Xiong, et al. 2002). We report here the crystal structure of the title compound, 1,3,5-tris((2H-tetrazol-5-yl)methoxy)benzene (I), (Fig.1).
In I, there are three chemically equivalent tetrazole moieties. The bond distances and bond angles of the three tetrazole rings are in the usual ranges (Wang, et al. 2005; ARP, et al. 2000; Hu, et al. 2007). The molecule is almost planar with an r.m.s. deviation of 0.0976 Å from the plane through all atoms in the molecule. Dihedral angles between the C8 and C10, C10 and C12 and C8 and C12 tetrazole rings are 13.56 (15), 2.01 (19) & 11.56 (18)°, respectively. Dihedral angles between the benzene ring and the C8, C10 and C12 tetrazole rings are 8.66 (17), 5.44 (16) & 3.51 (17)°, respectively. In each tetrazole ring, one N=N bond (N2=N3, N6=N7, and N10=N11), is distinctly shorter than the other two N—N distances (Table I). In the crystal structure, inversion related N1—H1A···N7i, N5—H5A···N10ii, and N12—H12Aiii···N3 hydrogen bonds link the molecules into infinite planar sheets. (Symmetry codes: (i) -x + 2, -y - 1, -z + 1; (ii) -x, -y, -z + 1; (iii) -x + 2, -y, -z + 2.) (Fig.2).