organic compounds
2-Azido-1-(3,6-dichloro-9H-fluoren-1-yl)ethanone
aX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, bSequent Scientific Limited, Baikampady, New Mangalore, India, and cDepartment of Chemistry, Mangalore University, Karnataka, India
*Correspondence e-mail: hkfun@usm.my
In the title compound, C15H9Cl2N3O, an intramolecular C—H⋯O interaction generates an S(7) ring motif. The cyclopenta-1,3-diene ring forms dihedral angles of 1.93 (6) and 2.78 (6)° with its attached benzene rings. In the crystal, molecules are linked by C—H⋯N and C—H⋯O hydrogen bonds, thereby forming layers lying parallel to the ac plane. The crystal also features a π–π interaction with a centroid–centroid distance of 3.5612 (6) Å.
Related literature
For the mutagenic activity of ); Nilan et al. (1973); Owais et al. (1983). For the preparation of 1,2,3-triazoles via 1,3-dipolar cycloaddition reactions of with substituted acetylene compounds, see: Purvisis et al. (1984); Patei & Smalley (1984). For a related fused-ring structure, see: Molins et al. (2002). For related azide structures, see: Basanagouda et al. (2010); Karthikeyan et al. (2011). For hydrogen-bond motifs, see: Bernstein et al. (1995). For reference bond lengths, see: Allen et al. (1987).
see: Sander & Muehlbour (1977Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536811036762/hb6387sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811036762/hb6387Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811036762/hb6387Isup3.cml
2-Chloro-1-(3,6-dichloro-9H-fluoren-1-yl)ethanone (2 g, 0.0064 mole) in 5 ml DMF was cooled to 0–5 °C. Sodium azide (0.4 g, 0.0064 mole) was added lot-wise and stirred for 3 h.The precipated product was filtered off, dried and recrystallized from ethanol (1.2 g, 60%). Yellow blocks of (I) were obtained from acetone by slow evaporation.
All H atoms were positioned geometrically [C—H = 0.95 and 0.99 Å] and refined using a riding model with Uiso(H) = 1.2 Ueq(C).
Azides are considered very important compounds due to both their industrial as well as biological applications. Azide derivatives have been used in rubber vulcanization, polymer cross linking, dyes tire cord adhesives, forming of plastics, pharmaceuticals, pesticides and herbicides. Many azide compounds show mutagenic activities (Sander & Muehlbour, 1977; Nilan et al., 1973; Owais et al., 1983). The chemistry of
has thus attracted the attention of many chemists, since many of these compounds play an important role in organic chemistry. One of the more useful synthetic applications of is the preparation of 1,2,3-triazoles via 1,3-dipolar reactions of with substituted acetylene compound (Purvisis et al., 1984; Patei & Smalley, 1984). The crystal structures of 4-Azidomethyl-7-methyl-2-oxo-2H-chromene-6-sulfonyl azide (Basanagouda et al., 2010) and 2-Azidomethyl-3-methyl-1-phenylsulfonyl-1H-indole (Karthikeyan et al., 2011) have been reported. Attributed to the above fact and with a view to obtain new and better biologically active agent, we synthesized the title compound, (I), in 60% yield.The molecular structure of the title compound is shown in Fig. 1. The cyclopenta-1,3-diene ring (C1/C6/C7/C12/C13) makes dihedral angles of 1.93 (6) and 2.78 (6)° with its terminal benzene rings (C1–C6 & C7–C12) respectively. Bond lengths (Allen et al., 1987) and angles are within normal ranges and are comparable to a related structure (Molins et al., 2002). The molecular structure is stabilized by intramolecular C5—H5A···O1 hydrogen bond (Table 1) which generates an S(7) ring motif (Fig. 1; Bernstein et al., 1995).
In the crystal (Fig. 2), the molecules are connected by C13—H13A···N3 and C15—H15A···O1 hydrogen bonds (Table 1) forming two-dimensional network parallel to ac plane.The crystal is further stabilized by π–π interactions with centroid···centroid distance, Cg1···Cg2 = 3.5612 (6) Å (symmetry code: x,1/2 - y,-1/2 + z); Cg1 and Cg2 are the centroids of the C1/C6/C7/C12/C13 and C1–C6 rings respectively.
For the mutagenic activity of
see: Sander & Muehlbour (1977); Nilan et al. (1973); Owais et al. (1983). For the preparation of 1,2,3-triazoles via 1,3-dipolar reactions of with substituted acetylene compounds, see: Purvisis et al. (1984); Patei & Smalley (1984). For a related fused-ring structure, see: Molins et al. (2002). For related azide structures, see: Basanagouda et al. (2010); Karthikeyan et al. (2011). For hydrogen-bond motifs, see: Bernstein et al. (1995). For reference bond lengths, see: Allen et al. (1987).Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).C15H9Cl2N3O | F(000) = 648 |
Mr = 318.15 | Dx = 1.545 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 7886 reflections |
a = 10.7303 (1) Å | θ = 2.2–30.0° |
b = 18.7012 (3) Å | µ = 0.48 mm−1 |
c = 6.8952 (1) Å | T = 100 K |
β = 98.61° | Block, yellow |
V = 1368.06 (3) Å3 | 0.35 × 0.21 × 0.14 mm |
Z = 4 |
Bruker SMART APEXII CCD area-detector diffractometer | 4003 independent reflections |
Radiation source: fine-focus sealed tube | 3599 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.020 |
φ and ω scans | θmax = 30.1°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −14→14 |
Tmin = 0.850, Tmax = 0.936 | k = −26→24 |
15671 measured reflections | l = −9→9 |
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) = 0.085 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0436P)2 + 0.561P] where P = (Fo2 + 2Fc2)/3 |
4003 reflections | (Δ/σ)max < 0.001 |
190 parameters | Δρmax = 0.37 e Å−3 |
0 restraints | Δρmin = −0.33 e Å−3 |
C15H9Cl2N3O | V = 1368.06 (3) Å3 |
Mr = 318.15 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.7303 (1) Å | µ = 0.48 mm−1 |
b = 18.7012 (3) Å | T = 100 K |
c = 6.8952 (1) Å | 0.35 × 0.21 × 0.14 mm |
β = 98.61° |
Bruker SMART APEXII CCD area-detector diffractometer | 4003 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3599 reflections with I > 2σ(I) |
Tmin = 0.850, Tmax = 0.936 | Rint = 0.020 |
15671 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.085 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.37 e Å−3 |
4003 reflections | Δρmin = −0.33 e Å−3 |
190 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K. |
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 | ||
Cl1 | 0.86335 (3) | 0.015258 (16) | 0.78440 (5) | 0.02477 (8) | |
Cl2 | 0.69062 (3) | 0.556390 (16) | 0.75596 (5) | 0.02593 (9) | |
O1 | 0.41319 (8) | 0.27518 (5) | 0.49870 (12) | 0.02012 (18) | |
N1 | 0.19994 (10) | 0.32713 (6) | 0.62768 (18) | 0.0257 (2) | |
N2 | 0.18912 (9) | 0.26184 (6) | 0.63263 (15) | 0.0216 (2) | |
N3 | 0.16346 (11) | 0.20274 (7) | 0.6281 (2) | 0.0321 (3) | |
C1 | 0.82735 (10) | 0.22727 (6) | 0.76076 (15) | 0.0156 (2) | |
C2 | 0.88066 (10) | 0.15948 (6) | 0.78230 (16) | 0.0174 (2) | |
H2A | 0.9693 | 0.1533 | 0.8121 | 0.021* | |
C3 | 0.79995 (11) | 0.10118 (6) | 0.75884 (16) | 0.0176 (2) | |
C4 | 0.66945 (11) | 0.10914 (6) | 0.71603 (16) | 0.0175 (2) | |
H4A | 0.6166 | 0.0681 | 0.7016 | 0.021* | |
C5 | 0.61693 (10) | 0.17715 (6) | 0.69457 (16) | 0.0159 (2) | |
H5A | 0.5281 | 0.1829 | 0.6654 | 0.019* | |
C6 | 0.69576 (10) | 0.23714 (6) | 0.71629 (15) | 0.0143 (2) | |
C7 | 0.67029 (10) | 0.31487 (6) | 0.70872 (15) | 0.0143 (2) | |
C8 | 0.55863 (10) | 0.35588 (6) | 0.67711 (15) | 0.0155 (2) | |
C9 | 0.56735 (11) | 0.43036 (6) | 0.69421 (16) | 0.0181 (2) | |
H9A | 0.4927 | 0.4584 | 0.6765 | 0.022* | |
C10 | 0.68399 (11) | 0.46365 (7) | 0.73686 (16) | 0.0185 (2) | |
C11 | 0.79532 (11) | 0.42465 (7) | 0.76498 (16) | 0.0182 (2) | |
H11A | 0.8748 | 0.4478 | 0.7923 | 0.022* | |
C12 | 0.78680 (10) | 0.35082 (6) | 0.75198 (15) | 0.0156 (2) | |
C13 | 0.89409 (10) | 0.29828 (6) | 0.78215 (16) | 0.0165 (2) | |
H13A | 0.9442 | 0.3035 | 0.9141 | 0.020* | |
H13B | 0.9502 | 0.3043 | 0.6817 | 0.020* | |
C14 | 0.43135 (10) | 0.32382 (6) | 0.61632 (16) | 0.0164 (2) | |
C15 | 0.32381 (11) | 0.35493 (7) | 0.71116 (18) | 0.0207 (2) | |
H15A | 0.3391 | 0.3442 | 0.8533 | 0.025* | |
H15B | 0.3236 | 0.4076 | 0.6958 | 0.025* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.02445 (15) | 0.01773 (15) | 0.03227 (16) | 0.00395 (10) | 0.00465 (11) | 0.00274 (11) |
Cl2 | 0.03214 (17) | 0.01536 (15) | 0.02921 (16) | −0.00146 (11) | 0.00100 (12) | −0.00078 (11) |
O1 | 0.0170 (4) | 0.0224 (4) | 0.0204 (4) | −0.0007 (3) | 0.0008 (3) | −0.0015 (3) |
N1 | 0.0152 (5) | 0.0260 (6) | 0.0360 (6) | 0.0035 (4) | 0.0041 (4) | 0.0048 (5) |
N2 | 0.0107 (4) | 0.0299 (6) | 0.0239 (5) | 0.0001 (4) | 0.0015 (3) | 0.0012 (4) |
N3 | 0.0203 (5) | 0.0298 (7) | 0.0446 (7) | −0.0036 (5) | −0.0006 (5) | 0.0043 (5) |
C1 | 0.0152 (5) | 0.0198 (6) | 0.0119 (5) | −0.0006 (4) | 0.0026 (4) | 0.0003 (4) |
C2 | 0.0157 (5) | 0.0205 (6) | 0.0161 (5) | 0.0016 (4) | 0.0028 (4) | 0.0005 (4) |
C3 | 0.0205 (5) | 0.0169 (5) | 0.0158 (5) | 0.0023 (4) | 0.0041 (4) | 0.0014 (4) |
C4 | 0.0189 (5) | 0.0174 (6) | 0.0164 (5) | −0.0016 (4) | 0.0035 (4) | 0.0001 (4) |
C5 | 0.0148 (5) | 0.0185 (5) | 0.0145 (5) | −0.0009 (4) | 0.0023 (4) | 0.0006 (4) |
C6 | 0.0152 (5) | 0.0175 (5) | 0.0106 (4) | 0.0007 (4) | 0.0029 (3) | 0.0005 (4) |
C7 | 0.0150 (5) | 0.0173 (5) | 0.0111 (4) | −0.0007 (4) | 0.0031 (3) | −0.0001 (4) |
C8 | 0.0155 (5) | 0.0187 (5) | 0.0125 (4) | 0.0003 (4) | 0.0026 (3) | 0.0001 (4) |
C9 | 0.0202 (5) | 0.0187 (6) | 0.0154 (5) | 0.0017 (4) | 0.0027 (4) | 0.0006 (4) |
C10 | 0.0244 (6) | 0.0150 (5) | 0.0159 (5) | −0.0012 (4) | 0.0028 (4) | −0.0006 (4) |
C11 | 0.0195 (5) | 0.0192 (6) | 0.0156 (5) | −0.0030 (4) | 0.0019 (4) | −0.0003 (4) |
C12 | 0.0159 (5) | 0.0187 (5) | 0.0123 (4) | −0.0013 (4) | 0.0027 (4) | 0.0000 (4) |
C13 | 0.0140 (4) | 0.0192 (5) | 0.0163 (5) | −0.0010 (4) | 0.0021 (4) | −0.0007 (4) |
C14 | 0.0150 (5) | 0.0176 (5) | 0.0164 (5) | 0.0019 (4) | 0.0018 (4) | 0.0040 (4) |
C15 | 0.0165 (5) | 0.0212 (6) | 0.0252 (6) | 0.0022 (4) | 0.0056 (4) | 0.0007 (4) |
Cl1—C3 | 1.7436 (12) | C6—C7 | 1.4787 (16) |
Cl2—C10 | 1.7400 (13) | C7—C12 | 1.4115 (15) |
O1—C14 | 1.2147 (15) | C7—C8 | 1.4117 (15) |
N1—N2 | 1.2275 (16) | C8—C9 | 1.3997 (17) |
N1—C15 | 1.4627 (16) | C8—C14 | 1.4930 (15) |
N2—N3 | 1.1382 (17) | C9—C10 | 1.3895 (16) |
C1—C2 | 1.3896 (16) | C9—H9A | 0.9500 |
C1—C6 | 1.4114 (15) | C10—C11 | 1.3882 (17) |
C1—C13 | 1.5055 (16) | C11—C12 | 1.3856 (17) |
C2—C3 | 1.3867 (17) | C11—H11A | 0.9500 |
C2—H2A | 0.9500 | C12—C13 | 1.5042 (16) |
C3—C4 | 1.3951 (16) | C13—H13A | 0.9900 |
C4—C5 | 1.3901 (16) | C13—H13B | 0.9900 |
C4—H4A | 0.9500 | C14—C15 | 1.5244 (16) |
C5—C6 | 1.3995 (16) | C15—H15A | 0.9900 |
C5—H5A | 0.9500 | C15—H15B | 0.9900 |
N2—N1—C15 | 115.27 (10) | C10—C9—H9A | 119.7 |
N3—N2—N1 | 171.32 (12) | C8—C9—H9A | 119.7 |
C2—C1—C6 | 121.67 (11) | C11—C10—C9 | 121.55 (11) |
C2—C1—C13 | 127.74 (10) | C11—C10—Cl2 | 119.25 (9) |
C6—C1—C13 | 110.59 (10) | C9—C10—Cl2 | 119.21 (9) |
C3—C2—C1 | 117.70 (10) | C12—C11—C10 | 117.86 (11) |
C3—C2—H2A | 121.2 | C12—C11—H11A | 121.1 |
C1—C2—H2A | 121.2 | C10—C11—H11A | 121.1 |
C2—C3—C4 | 122.04 (11) | C11—C12—C7 | 122.41 (10) |
C2—C3—Cl1 | 119.03 (9) | C11—C12—C13 | 126.89 (10) |
C4—C3—Cl1 | 118.93 (9) | C7—C12—C13 | 110.70 (10) |
C5—C4—C3 | 119.88 (11) | C12—C13—C1 | 102.69 (9) |
C5—C4—H4A | 120.1 | C12—C13—H13A | 111.2 |
C3—C4—H4A | 120.1 | C1—C13—H13A | 111.2 |
C4—C5—C6 | 119.55 (10) | C12—C13—H13B | 111.2 |
C4—C5—H5A | 120.2 | C1—C13—H13B | 111.2 |
C6—C5—H5A | 120.2 | H13A—C13—H13B | 109.1 |
C5—C6—C1 | 119.17 (11) | O1—C14—C8 | 122.46 (10) |
C5—C6—C7 | 132.74 (10) | O1—C14—C15 | 121.08 (10) |
C1—C6—C7 | 108.05 (10) | C8—C14—C15 | 116.46 (10) |
C12—C7—C8 | 118.58 (11) | N1—C15—C14 | 113.40 (10) |
C12—C7—C6 | 107.91 (9) | N1—C15—H15A | 108.9 |
C8—C7—C6 | 133.44 (10) | C14—C15—H15A | 108.9 |
C9—C8—C7 | 118.89 (10) | N1—C15—H15B | 108.9 |
C9—C8—C14 | 118.04 (10) | C14—C15—H15B | 108.9 |
C7—C8—C14 | 123.01 (10) | H15A—C15—H15B | 107.7 |
C10—C9—C8 | 120.69 (11) | ||
C6—C1—C2—C3 | −0.08 (16) | C14—C8—C9—C10 | −175.49 (10) |
C13—C1—C2—C3 | 178.91 (10) | C8—C9—C10—C11 | −0.36 (17) |
C1—C2—C3—C4 | −0.31 (16) | C8—C9—C10—Cl2 | 179.77 (8) |
C1—C2—C3—Cl1 | 179.91 (8) | C9—C10—C11—C12 | −0.91 (16) |
C2—C3—C4—C5 | 0.37 (17) | Cl2—C10—C11—C12 | 178.96 (8) |
Cl1—C3—C4—C5 | −179.85 (8) | C10—C11—C12—C7 | 0.99 (16) |
C3—C4—C5—C6 | −0.03 (16) | C10—C11—C12—C13 | −178.30 (10) |
C4—C5—C6—C1 | −0.35 (15) | C8—C7—C12—C11 | 0.19 (16) |
C4—C5—C6—C7 | −177.92 (10) | C6—C7—C12—C11 | −177.22 (10) |
C2—C1—C6—C5 | 0.41 (16) | C8—C7—C12—C13 | 179.58 (9) |
C13—C1—C6—C5 | −178.74 (9) | C6—C7—C12—C13 | 2.18 (12) |
C2—C1—C6—C7 | 178.53 (10) | C11—C12—C13—C1 | 176.92 (10) |
C13—C1—C6—C7 | −0.62 (12) | C7—C12—C13—C1 | −2.44 (11) |
C5—C6—C7—C12 | 176.80 (11) | C2—C1—C13—C12 | −177.27 (10) |
C1—C6—C7—C12 | −0.96 (11) | C6—C1—C13—C12 | 1.82 (11) |
C5—C6—C7—C8 | −0.1 (2) | C9—C8—C14—O1 | 137.71 (12) |
C1—C6—C7—C8 | −177.82 (11) | C7—C8—C14—O1 | −39.20 (16) |
C12—C7—C8—C9 | −1.45 (15) | C9—C8—C14—C15 | −42.76 (14) |
C6—C7—C8—C9 | 175.15 (11) | C7—C8—C14—C15 | 140.33 (11) |
C12—C7—C8—C14 | 175.44 (10) | N2—N1—C15—C14 | 56.63 (15) |
C6—C7—C8—C14 | −7.96 (18) | O1—C14—C15—N1 | −7.46 (16) |
C7—C8—C9—C10 | 1.55 (16) | C8—C14—C15—N1 | 173.01 (10) |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5A···O1 | 0.95 | 2.32 | 3.0134 (14) | 129 |
C13—H13A···N3i | 0.99 | 2.59 | 3.4613 (16) | 147 |
C15—H15A···O1ii | 0.99 | 2.53 | 3.1941 (15) | 125 |
Symmetry codes: (i) x+1, −y+1/2, z+1/2; (ii) x, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C15H9Cl2N3O |
Mr | 318.15 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 10.7303 (1), 18.7012 (3), 6.8952 (1) |
β (°) | 98.61 |
V (Å3) | 1368.06 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.48 |
Crystal size (mm) | 0.35 × 0.21 × 0.14 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.850, 0.936 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 15671, 4003, 3599 |
Rint | 0.020 |
(sin θ/λ)max (Å−1) | 0.705 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.085, 1.03 |
No. of reflections | 4003 |
No. of parameters | 190 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.37, −0.33 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5A···O1 | 0.95 | 2.32 | 3.0134 (14) | 129 |
C13—H13A···N3i | 0.99 | 2.59 | 3.4613 (16) | 147 |
C15—H15A···O1ii | 0.99 | 2.53 | 3.1941 (15) | 125 |
Symmetry codes: (i) x+1, −y+1/2, z+1/2; (ii) x, −y+1/2, z+1/2. |
Footnotes
‡Thomson Reuters ResearcherID: A-3561-2009.
Acknowledgements
HKF and TSC thank Universiti Sains Malaysia (USM) for the Research University Grant (1001/PFIZIK/811160). TSC thanks the Malaysian Government and USM for the award of the post of Research Officer under the
of kDa Outer Membrane Proteins from S. typhi by X-ray Protein Crystallography Grant (No. 1001/PSKBP/8630013).References
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Azides are considered very important compounds due to both their industrial as well as biological applications. Azide derivatives have been used in rubber vulcanization, polymer cross linking, dyes tire cord adhesives, forming of plastics, pharmaceuticals, pesticides and herbicides. Many azide compounds show mutagenic activities (Sander & Muehlbour, 1977; Nilan et al., 1973; Owais et al., 1983). The chemistry of azides has thus attracted the attention of many chemists, since many of these compounds play an important role in organic chemistry. One of the more useful synthetic applications of azides is the preparation of 1,2,3-triazoles via 1,3-dipolar cycloaddition reactions of azides with substituted acetylene compound (Purvisis et al., 1984; Patei & Smalley, 1984). The crystal structures of 4-Azidomethyl-7-methyl-2-oxo-2H-chromene-6-sulfonyl azide (Basanagouda et al., 2010) and 2-Azidomethyl-3-methyl-1-phenylsulfonyl-1H-indole (Karthikeyan et al., 2011) have been reported. Attributed to the above fact and with a view to obtain new and better biologically active agent, we synthesized the title compound, (I), in 60% yield.
The molecular structure of the title compound is shown in Fig. 1. The cyclopenta-1,3-diene ring (C1/C6/C7/C12/C13) makes dihedral angles of 1.93 (6) and 2.78 (6)° with its terminal benzene rings (C1–C6 & C7–C12) respectively. Bond lengths (Allen et al., 1987) and angles are within normal ranges and are comparable to a related structure (Molins et al., 2002). The molecular structure is stabilized by intramolecular C5—H5A···O1 hydrogen bond (Table 1) which generates an S(7) ring motif (Fig. 1; Bernstein et al., 1995).
In the crystal (Fig. 2), the molecules are connected by C13—H13A···N3 and C15—H15A···O1 hydrogen bonds (Table 1) forming two-dimensional network parallel to ac plane.The crystal is further stabilized by π–π interactions with centroid···centroid distance, Cg1···Cg2 = 3.5612 (6) Å (symmetry code: x,1/2 - y,-1/2 + z); Cg1 and Cg2 are the centroids of the C1/C6/C7/C12/C13 and C1–C6 rings respectively.