organic compounds
2,2′-o-Phenylenediacetonitrile
aDepartment of Chemistry, University of St Andrews, St Andrews KY16 9ST, Scotland
*Correspondence e-mail: jdw3@st-and.ac.uk
In the title compound, NCCH2C6H4CH2CN, the bond lengths and angles are within normal ranges. The benzene ring makes dihedral angles of 4.94 (8) and 77.04 (8)° with the C—C—C—N mean planes. Weak non-conventional C—H⋯N hydrogen bonds are effective in the stabilization of the The weak C—H⋯N contacts form antiparallel chains running in the a + c direction, and ring systems with two N-atom acceptors and four H-atom donors.
Related literature
For reactions of Woollins' Reagent see: Gray et al. (2005); Hua et al. (2006, 2009); Hua & Woollins (2009). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2004); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536809041506/si2203sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809041506/si2203Isup2.hkl
Commercially available 2,2'-(1,2-phenylene)diacetonitrile was recrystallized from dichloromethane-hexane.
H atoms were positioned geometrically (C—H = 0.93–0.97 Å) and were treated as riding on their parent C atoms with Uiso(H)= 1.2–1.5Ueq(C).
Recently, we have continued our studies exploring the reactivity of Woollins reagent towards different organic substituents (Gray et al. 2005, Hua et al. 2006 and 2009; Hua & Woollins 2009). Thereby 2,2'-(1,2-phenylene)diacetonitrile represents one of the starting materials. Single crystals of 2,5-dihydroxybenzaldehyde for X-ray crystallographic analysis were obtained by recrystallization from dichloromethane-hexane solution.
The bond lengths (Allen et al., 1987) and angles are within normal ranges.The benzene ring makes the dihedral angles of 4.94 (8) and 77.04 (8)° with the mean planes of C1—C7—C8—N1 and C2—C9—C10—N2 respectively. The antiparallel chains running in a+c direction are generated through the weak C—H···N contacts, glide plane and inversinon symmetry operations[see Fig. 2 and Table 1]. Inversion symmetry forms also C—H···N ring systems consisting of two N acceptors and four H atom donors,where the centroid-centroid distance between the inversion-related benzene ring planes is 3.6809 (10) Å, the perpendicular plane to plane distance is 3.364 Å, and the slippage between the planes is 1.495 Å.
For reactions of Woollins' Reagent see: Gray et al. (2005); Hua et al. (2006, 2009); Hua & Woollins (2009). For bond-length data, see: Allen et al. (1987).
Data collection: CrystalClear (Rigaku, 2004); cell
CrystalClear (Rigaku, 2004); data reduction: CrystalClear (Rigaku, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C10H8N2 | F(000) = 328 |
Mr = 156.18 | Dx = 1.291 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
a = 8.3882 (18) Å | Cell parameters from 2633 reflections |
b = 8.1605 (15) Å | θ = 2.7–28.3° |
c = 11.993 (2) Å | µ = 0.08 mm−1 |
β = 101.890 (6)° | T = 93 K |
V = 803.4 (3) Å3 | Block, colorless |
Z = 4 | 0.30 × 0.25 × 0.15 mm |
Rigaku Mercury CCD diffractometer | 1660 independent reflections |
Radiation source: rotating anode | 1330 reflections with I > 2σ(I) |
Confocal monochromator | Rint = 0.031 |
Detector resolution: 0.83 pixels mm-1 | θmax = 28.7°, θmin = 2.7° |
ω scans | h = −11→10 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2004) | k = −9→10 |
Tmin = 0.977, Tmax = 0.988 | l = −13→15 |
5271 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)] = 0.051 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.09 | w = 1/[σ2(Fo2) + (0.0698P)2 + 0.0077P] where P = (Fo2 + 2Fc2)/3 |
1660 reflections | (Δ/σ)max = 0.001 |
109 parameters | Δρmax = 0.28 e Å−3 |
0 restraints | Δρmin = −0.21 e Å−3 |
C10H8N2 | V = 803.4 (3) Å3 |
Mr = 156.18 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 8.3882 (18) Å | µ = 0.08 mm−1 |
b = 8.1605 (15) Å | T = 93 K |
c = 11.993 (2) Å | 0.30 × 0.25 × 0.15 mm |
β = 101.890 (6)° |
Rigaku Mercury CCD diffractometer | 1660 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2004) | 1330 reflections with I > 2σ(I) |
Tmin = 0.977, Tmax = 0.988 | Rint = 0.031 |
5271 measured reflections |
R[F2 > 2σ(F2)] = 0.051 | 0 restraints |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.09 | Δρmax = 0.28 e Å−3 |
1660 reflections | Δρmin = −0.21 e Å−3 |
109 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 | ||
C1 | 0.77845 (13) | 0.05887 (16) | 0.95174 (10) | 0.0215 (3) | |
C2 | 0.72184 (13) | 0.13136 (16) | 1.04228 (10) | 0.0218 (3) | |
C7 | 0.83384 (14) | 0.16768 (16) | 0.86390 (10) | 0.0257 (3) | |
H7A | 0.7404 | 0.2350 | 0.8253 | 0.031* | |
H7B | 0.9191 | 0.2433 | 0.9038 | 0.031* | |
C3 | 0.66532 (15) | 0.03264 (16) | 1.12009 (11) | 0.0250 (3) | |
H3 | 0.6273 | 0.0817 | 1.1816 | 0.030* | |
C8 | 0.89813 (14) | 0.07728 (16) | 0.77779 (10) | 0.0252 (3) | |
N1 | 0.94789 (13) | 0.00673 (14) | 0.70957 (10) | 0.0313 (3) | |
C10 | 0.88145 (15) | 0.38338 (15) | 1.10361 (10) | 0.0248 (4) | |
C9 | 0.71906 (14) | 0.31597 (16) | 1.05579 (11) | 0.0249 (3) | |
H9A | 0.6768 | 0.3666 | 0.9805 | 0.030* | |
H9B | 0.6438 | 0.3448 | 1.1064 | 0.030* | |
C5 | 0.71958 (14) | −0.20835 (16) | 1.02028 (11) | 0.0278 (4) | |
H5 | 0.7192 | −0.3242 | 1.0126 | 0.033* | |
C6 | 0.77646 (14) | −0.11076 (16) | 0.94203 (11) | 0.0248 (4) | |
H6 | 0.8146 | −0.1607 | 0.8809 | 0.030* | |
N2 | 1.00792 (13) | 0.43446 (14) | 1.14226 (9) | 0.0318 (3) | |
C4 | 0.66348 (14) | −0.13701 (17) | 1.10929 (11) | 0.0271 (3) | |
H4 | 0.6239 | −0.2034 | 1.1628 | 0.033* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0169 (6) | 0.0226 (7) | 0.0238 (7) | 0.0002 (4) | 0.0009 (5) | 0.0007 (5) |
C2 | 0.0176 (6) | 0.0247 (7) | 0.0221 (7) | 0.0023 (5) | 0.0013 (5) | −0.0002 (5) |
C7 | 0.0267 (7) | 0.0232 (7) | 0.0274 (7) | 0.0013 (5) | 0.0062 (5) | 0.0001 (6) |
C3 | 0.0207 (7) | 0.0311 (8) | 0.0220 (7) | −0.0002 (5) | 0.0019 (5) | −0.0002 (6) |
C8 | 0.0217 (7) | 0.0285 (7) | 0.0252 (7) | −0.0031 (5) | 0.0043 (5) | 0.0008 (6) |
N1 | 0.0292 (7) | 0.0337 (8) | 0.0319 (7) | −0.0012 (5) | 0.0085 (5) | −0.0019 (5) |
C10 | 0.0321 (7) | 0.0198 (7) | 0.0243 (7) | 0.0044 (5) | 0.0097 (6) | −0.0012 (5) |
C9 | 0.0256 (7) | 0.0240 (8) | 0.0250 (7) | 0.0021 (5) | 0.0049 (5) | −0.0018 (6) |
C5 | 0.0257 (7) | 0.0210 (7) | 0.0342 (8) | −0.0006 (5) | 0.0007 (6) | 0.0018 (6) |
C6 | 0.0241 (7) | 0.0235 (8) | 0.0263 (7) | 0.0027 (5) | 0.0040 (5) | −0.0023 (6) |
N2 | 0.0325 (7) | 0.0272 (7) | 0.0359 (7) | −0.0019 (5) | 0.0071 (5) | −0.0044 (5) |
C4 | 0.0234 (7) | 0.0314 (8) | 0.0253 (7) | −0.0034 (5) | 0.0022 (5) | 0.0054 (6) |
C1—C6 | 1.3890 (19) | C8—N1 | 1.1471 (15) |
C1—C2 | 1.4025 (16) | C10—N2 | 1.1452 (15) |
C1—C7 | 1.5218 (18) | C10—C9 | 1.4714 (17) |
C2—C3 | 1.3882 (18) | C9—H9A | 0.9900 |
C2—C9 | 1.5159 (18) | C9—H9B | 0.9900 |
C7—C8 | 1.4599 (17) | C5—C4 | 1.3809 (18) |
C7—H7A | 0.9900 | C5—C6 | 1.3882 (17) |
C7—H7B | 0.9900 | C5—H5 | 0.9500 |
C3—C4 | 1.390 (2) | C6—H6 | 0.9500 |
C3—H3 | 0.9500 | C4—H4 | 0.9500 |
C6—C1—C2 | 119.02 (11) | N2—C10—C9 | 178.97 (14) |
C6—C1—C7 | 121.58 (11) | C10—C9—C2 | 112.32 (10) |
C2—C1—C7 | 119.36 (12) | C10—C9—H9A | 109.1 |
C3—C2—C1 | 119.52 (13) | C2—C9—H9A | 109.1 |
C3—C2—C9 | 119.34 (11) | C10—C9—H9B | 109.1 |
C1—C2—C9 | 121.14 (11) | C2—C9—H9B | 109.1 |
C8—C7—C1 | 113.88 (11) | H9A—C9—H9B | 107.9 |
C8—C7—H7A | 108.8 | C4—C5—C6 | 120.00 (12) |
C1—C7—H7A | 108.8 | C4—C5—H5 | 120.0 |
C8—C7—H7B | 108.8 | C6—C5—H5 | 120.0 |
C1—C7—H7B | 108.8 | C1—C6—C5 | 121.00 (11) |
H7A—C7—H7B | 107.7 | C1—C6—H6 | 119.5 |
C2—C3—C4 | 120.94 (12) | C5—C6—H6 | 119.5 |
C2—C3—H3 | 119.5 | C5—C4—C3 | 119.53 (12) |
C4—C3—H3 | 119.5 | C5—C4—H4 | 120.2 |
N1—C8—C7 | 179.54 (14) | C3—C4—H4 | 120.2 |
C6—C1—C2—C3 | 0.04 (16) | C3—C2—C9—C10 | 103.33 (13) |
C7—C1—C2—C3 | 177.52 (11) | C1—C2—C9—C10 | −77.54 (13) |
C6—C1—C2—C9 | −179.09 (11) | C2—C1—C6—C5 | 0.00 (17) |
C7—C1—C2—C9 | −1.61 (15) | C7—C1—C6—C5 | −177.43 (10) |
C6—C1—C7—C8 | −5.75 (16) | C4—C5—C6—C1 | 0.15 (18) |
C2—C1—C7—C8 | 176.84 (10) | C6—C5—C4—C3 | −0.34 (18) |
C1—C2—C3—C4 | −0.23 (17) | C2—C3—C4—C5 | 0.38 (18) |
C9—C2—C3—C4 | 178.91 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9A···N1i | 0.99 | 2.57 | 3.5605 (18) | 176 |
C9—H9B···N1ii | 0.99 | 2.56 | 3.5210 (17) | 165 |
Symmetry codes: (i) −x+3/2, y+1/2, −z+3/2; (ii) x−1/2, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C10H8N2 |
Mr | 156.18 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 93 |
a, b, c (Å) | 8.3882 (18), 8.1605 (15), 11.993 (2) |
β (°) | 101.890 (6) |
V (Å3) | 803.4 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.30 × 0.25 × 0.15 |
Data collection | |
Diffractometer | Rigaku Mercury CCD |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2004) |
Tmin, Tmax | 0.977, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5271, 1660, 1330 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.675 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.133, 1.09 |
No. of reflections | 1660 |
No. of parameters | 109 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.28, −0.21 |
Computer programs: CrystalClear (Rigaku, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9A···N1i | 0.99 | 2.57 | 3.5605 (18) | 176.2 |
C9—H9B···N1ii | 0.99 | 2.56 | 3.5210 (17) | 164.6 |
Symmetry codes: (i) −x+3/2, y+1/2, −z+3/2; (ii) x−1/2, −y+1/2, z+1/2. |
Acknowledgements
The authors are grateful to the University of St Andrews and the Engineering and Physical Science Research Council (EPRSC, UK) for financial support.
References
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CSD CrossRef Web of Science Google Scholar
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Recently, we have continued our studies exploring the reactivity of Woollins reagent towards different organic substituents (Gray et al. 2005, Hua et al. 2006 and 2009; Hua & Woollins 2009). Thereby 2,2'-(1,2-phenylene)diacetonitrile represents one of the starting materials. Single crystals of 2,5-dihydroxybenzaldehyde for X-ray crystallographic analysis were obtained by recrystallization from dichloromethane-hexane solution.
The bond lengths (Allen et al., 1987) and angles are within normal ranges.The benzene ring makes the dihedral angles of 4.94 (8) and 77.04 (8)° with the mean planes of C1—C7—C8—N1 and C2—C9—C10—N2 respectively. The antiparallel chains running in a+c direction are generated through the weak C—H···N contacts, glide plane and inversinon symmetry operations[see Fig. 2 and Table 1]. Inversion symmetry forms also C—H···N ring systems consisting of two N acceptors and four H atom donors,where the centroid-centroid distance between the inversion-related benzene ring planes is 3.6809 (10) Å, the perpendicular plane to plane distance is 3.364 Å, and the slippage between the planes is 1.495 Å.