organic compounds
N-(2,3-Dimethylphenyl)benzamide
aDepartment of Chemistry, Mangalore University, Mangalagangotri 574 199, Mangalore, India, bFaculty of Chemical and Food Technology, Slovak Technical University, Radlinského 9, SK-812 37 Bratislava, Slovak Republic, and cInstitute of Materials Science, Darmstadt University of Technology, Petersenstrasse 23, D-64287 Darmstadt, Germany
*Correspondence e-mail: gowdabt@yahoo.com
The conformation of the N—H bond in the structure of the title compound, C15H15NO, is anti to the ortho and meta-methyl substituents in the aniline benzene ring, in contrast to the syn conformation observed with respect to the ortho and meta-chloro substituents in N-(2,3-dichlorophenyl)benzamide. Furthermore, the conformations of N—H and C=O bonds in the amide group are anti to each other, similar to those observed in other benzanilides. The dihedral angle between the benzoyl and aniline rings is 84.1 (2)°. The amide group is twisted by 23.0 (3)° out of the plane of the benzoyl ring. The structure exhibits positional disorder over the aniline ring, with site occupancies of 0.80 (1) and 0.20 (1) for the major and minor components, respectively. In the crystal, molecules are connected through N—H⋯O hydrogen bonds into chains running along the b axis. An intramolecular C—H⋯O close contact occurs.
Related literature
For related structures, see Azumaya et al. (1994); Gowda et al. (2003, 2007, 2008a,b).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis CCD (Oxford Diffraction, 2008); cell CrysAlis RED (Oxford Diffraction, 2008); data reduction: CrysAlis RED; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2002); software used to prepare material for publication: SHELXL97, PLATON (Spek, 2009) and WinGX (Farrugia, 1999).
Supporting information
10.1107/S1600536809012112/dn2440sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809012112/dn2440Isup2.hkl
The title compound was prepared according to the literature method (Gowda et al., 2003). The purity of the compound was checked by determining its melting point. It was characterized by recording its infrared and NMR spectra. Single crystals of the title compound were obtained from an ethanol solution and used for X-ray diffraction studies at room temperature.
During the
of (I) the atoms of anilino ring revealed unusual anisotropic displacement parameters, so we introduced two sets of split sites for this part of molecule. The positions of methyl groups were carefully localized (Fig.3). Final cycles of were done with fixed site occupancy factors (0.80 and 1/5) and the following restraints: The major component of the disorder (atoms C8 to C15) was refined free, except for DELU restraint imposed on the atoms C8, C10. The minor component was subject to restraint on the geometry of the ring (rigid planar hexagon) and restraint on the anisotropic displacement parameters - using DELU instruction for ring atoms. As to the hydrogen atoms, the amido H atom was seen in difference maps and its positional parameters were refined with the restraint on N—H distance, set at 0.86 (2) Å. All other H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with C—H distances in the range 0.93–0.96 Å and with displacement parameters Uiso(H) set at 1.2 Ueq(C-aromatic,N) or 1.5 Ueq(C-methyl).Data collection: CrysAlis CCD (Oxford Diffraction, 2008); cell
CrysAlis RED (Oxford Diffraction, 2008); data reduction: CrysAlis RED (Oxford Diffraction, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2002); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009) and WinGX (Farrugia, 1999).C15H15NO | F(000) = 960 |
Mr = 225.28 | Dx = 1.199 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 12625 reflections |
a = 8.4656 (2) Å | θ = 3.1–29.2° |
b = 9.4848 (2) Å | µ = 0.08 mm−1 |
c = 31.0957 (9) Å | T = 295 K |
V = 2496.81 (11) Å3 | Rod, colourless |
Z = 8 | 0.52 × 0.16 × 0.05 mm |
Oxford Diffraction Xcalibur System diffractometer | 2409 independent reflections |
Graphite monochromator | 1572 reflections with I > 2σ(I) |
Detector resolution: 10.434 pixels mm-1 | Rint = 0.052 |
ω scans with κ offsets | θmax = 25.9°, θmin = 3.3° |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2008) | h = −10→10 |
Tmin = 0.963, Tmax = 0.996 | k = −11→11 |
48994 measured reflections | l = −38→38 |
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)] = 0.052 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.146 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0655P)2 + 0.6303P] where P = (Fo2 + 2Fc2)/3 |
2409 reflections | (Δ/σ)max < 0.001 |
222 parameters | Δρmax = 0.10 e Å−3 |
14 restraints | Δρmin = −0.14 e Å−3 |
C15H15NO | V = 2496.81 (11) Å3 |
Mr = 225.28 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 8.4656 (2) Å | µ = 0.08 mm−1 |
b = 9.4848 (2) Å | T = 295 K |
c = 31.0957 (9) Å | 0.52 × 0.16 × 0.05 mm |
Oxford Diffraction Xcalibur System diffractometer | 2409 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2008) | 1572 reflections with I > 2σ(I) |
Tmin = 0.963, Tmax = 0.996 | Rint = 0.052 |
48994 measured reflections |
R[F2 > 2σ(F2)] = 0.052 | 14 restraints |
wR(F2) = 0.146 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.10 e Å−3 |
2409 reflections | Δρmin = −0.14 e Å−3 |
222 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 | Occ. (<1) | |
N1 | 0.2585 (2) | 0.60702 (17) | 0.37113 (6) | 0.0562 (5) | |
H1N | 0.273 (3) | 0.6973 (18) | 0.3654 (7) | 0.067* | |
O1 | 0.1702 (2) | 0.39655 (14) | 0.34744 (5) | 0.0676 (5) | |
C1 | 0.1605 (2) | 0.52512 (19) | 0.34747 (6) | 0.0496 (5) | |
C2 | 0.0397 (2) | 0.59716 (19) | 0.32076 (6) | 0.0461 (5) | |
C3 | −0.0200 (2) | 0.5254 (2) | 0.28599 (7) | 0.0549 (5) | |
H3 | 0.0147 | 0.4342 | 0.2804 | 0.066* | |
C4 | −0.1302 (3) | 0.5859 (2) | 0.25935 (7) | 0.0635 (6) | |
H4 | −0.1678 | 0.5369 | 0.2356 | 0.076* | |
C5 | −0.1844 (3) | 0.7196 (2) | 0.26811 (8) | 0.0701 (7) | |
H5 | −0.2597 | 0.7609 | 0.2504 | 0.084* | |
C6 | −0.1277 (3) | 0.7913 (2) | 0.30275 (8) | 0.0729 (7) | |
H6 | −0.1657 | 0.8812 | 0.3087 | 0.087* | |
C7 | −0.0153 (3) | 0.7326 (2) | 0.32897 (7) | 0.0581 (6) | |
H7 | 0.0242 | 0.7833 | 0.3522 | 0.07* | |
C8 | 0.3938 (5) | 0.5547 (4) | 0.39290 (14) | 0.0517 (10) | 0.8 |
C9 | 0.3754 (4) | 0.4635 (4) | 0.42634 (13) | 0.0567 (8) | 0.8 |
C10 | 0.5108 (6) | 0.4031 (5) | 0.44545 (16) | 0.0718 (10) | 0.8 |
C11 | 0.6555 (6) | 0.4480 (7) | 0.4303 (2) | 0.0842 (13) | 0.8 |
H11 | 0.7458 | 0.4096 | 0.4427 | 0.101* | 0.8 |
C12 | 0.6745 (5) | 0.5444 (5) | 0.39867 (14) | 0.0910 (11) | 0.8 |
H12 | 0.7754 | 0.5718 | 0.3903 | 0.109* | 0.8 |
C13 | 0.5457 (5) | 0.6012 (5) | 0.37902 (16) | 0.0713 (12) | 0.8 |
H13 | 0.5563 | 0.668 | 0.3573 | 0.086* | 0.8 |
C14 | 0.2156 (5) | 0.4279 (4) | 0.44389 (12) | 0.0748 (10) | 0.8 |
H14A | 0.2122 | 0.4502 | 0.474 | 0.112* | 0.8 |
H14B | 0.1955 | 0.3292 | 0.4399 | 0.112* | 0.8 |
H14C | 0.1367 | 0.4817 | 0.429 | 0.112* | 0.8 |
C15 | 0.4970 (6) | 0.2939 (4) | 0.48009 (12) | 0.1080 (14) | 0.8 |
H15A | 0.4326 | 0.2174 | 0.4701 | 0.162* | 0.8 |
H15B | 0.4493 | 0.3352 | 0.5051 | 0.162* | 0.8 |
H15C | 0.6002 | 0.2593 | 0.4873 | 0.162* | 0.8 |
C8D | 0.3513 (13) | 0.5282 (12) | 0.4010 (3) | 0.051 (4) | 0.2 |
C9D | 0.5124 (14) | 0.5487 (12) | 0.3951 (3) | 0.053 (3) | 0.2 |
C10D | 0.6201 (10) | 0.4779 (17) | 0.4211 (5) | 0.082 (5) | 0.2 |
C11D | 0.5667 (12) | 0.3865 (16) | 0.4528 (5) | 0.078 (5) | 0.2 |
H11D | 0.6387 | 0.3392 | 0.4702 | 0.094* | 0.2 |
C12D | 0.4055 (14) | 0.3660 (9) | 0.4587 (3) | 0.067 (3) | 0.2 |
H12D | 0.3698 | 0.3048 | 0.4799 | 0.081* | 0.2 |
C13D | 0.2978 (10) | 0.4368 (12) | 0.4328 (3) | 0.048 (3) | 0.2 |
H13D | 0.19 | 0.423 | 0.4367 | 0.057* | 0.2 |
C14D | 0.5865 (19) | 0.648 (2) | 0.3617 (7) | 0.090 (6) | 0.2 |
H14D | 0.5112 | 0.6671 | 0.3393 | 0.135* | 0.2 |
H14E | 0.6786 | 0.6049 | 0.3496 | 0.135* | 0.2 |
H14F | 0.6157 | 0.7352 | 0.3754 | 0.135* | 0.2 |
C15D | 0.7999 (14) | 0.4840 (15) | 0.4207 (5) | 0.081 (4) | 0.2 |
H15D | 0.8375 | 0.4718 | 0.3918 | 0.121* | 0.2 |
H15E | 0.8414 | 0.4102 | 0.4386 | 0.121* | 0.2 |
H15F | 0.8343 | 0.5737 | 0.4315 | 0.121* | 0.2 |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0656 (11) | 0.0354 (8) | 0.0678 (11) | −0.0015 (8) | −0.0083 (9) | 0.0018 (8) |
O1 | 0.0834 (11) | 0.0337 (8) | 0.0856 (11) | 0.0058 (7) | −0.0171 (9) | −0.0005 (7) |
C1 | 0.0582 (12) | 0.0324 (10) | 0.0582 (12) | 0.0000 (9) | 0.0030 (10) | 0.0016 (9) |
C2 | 0.0481 (11) | 0.0361 (10) | 0.0540 (11) | −0.0031 (8) | 0.0055 (9) | 0.0046 (9) |
C3 | 0.0558 (12) | 0.0377 (10) | 0.0711 (14) | −0.0031 (9) | −0.0009 (11) | −0.0025 (10) |
C4 | 0.0614 (14) | 0.0581 (13) | 0.0710 (15) | −0.0079 (11) | −0.0129 (11) | −0.0011 (11) |
C5 | 0.0702 (15) | 0.0527 (13) | 0.0874 (17) | −0.0020 (11) | −0.0219 (13) | 0.0114 (13) |
C6 | 0.0815 (16) | 0.0444 (12) | 0.0928 (18) | 0.0126 (12) | −0.0174 (14) | 0.0009 (12) |
C7 | 0.0700 (14) | 0.0386 (11) | 0.0659 (13) | 0.0030 (10) | −0.0054 (11) | −0.0014 (10) |
C8 | 0.053 (3) | 0.0387 (15) | 0.063 (2) | 0.0004 (17) | −0.0032 (18) | −0.0055 (14) |
C9 | 0.067 (2) | 0.0446 (18) | 0.059 (2) | −0.0009 (18) | −0.005 (2) | −0.0083 (15) |
C10 | 0.076 (3) | 0.064 (2) | 0.076 (3) | 0.003 (2) | −0.015 (2) | −0.0052 (19) |
C11 | 0.081 (3) | 0.088 (3) | 0.083 (3) | 0.015 (3) | −0.023 (3) | −0.006 (2) |
C12 | 0.060 (2) | 0.101 (3) | 0.112 (3) | −0.012 (2) | 0.003 (2) | −0.009 (2) |
C13 | 0.057 (3) | 0.070 (3) | 0.088 (4) | −0.014 (2) | −0.003 (3) | −0.006 (2) |
C14 | 0.094 (3) | 0.066 (2) | 0.064 (2) | −0.009 (2) | 0.008 (2) | 0.0078 (17) |
C15 | 0.150 (4) | 0.085 (3) | 0.088 (3) | 0.019 (3) | −0.035 (2) | 0.018 (2) |
C8D | 0.050 (7) | 0.067 (10) | 0.037 (7) | −0.007 (7) | −0.002 (6) | 0.006 (6) |
C9D | 0.053 (7) | 0.053 (9) | 0.052 (8) | −0.020 (6) | 0.018 (5) | −0.025 (5) |
C10D | 0.052 (8) | 0.085 (16) | 0.108 (17) | −0.008 (7) | −0.015 (7) | −0.031 (9) |
C11D | 0.061 (7) | 0.090 (12) | 0.083 (12) | 0.029 (9) | −0.026 (9) | −0.020 (7) |
C12D | 0.082 (8) | 0.061 (7) | 0.059 (7) | 0.005 (6) | −0.019 (6) | 0.013 (5) |
C13D | 0.037 (7) | 0.052 (8) | 0.054 (9) | −0.001 (7) | 0.002 (7) | 0.012 (5) |
C14D | 0.051 (9) | 0.083 (12) | 0.135 (16) | −0.009 (7) | 0.029 (9) | 0.033 (10) |
C15D | 0.046 (7) | 0.101 (10) | 0.096 (10) | −0.004 (6) | −0.009 (7) | 0.022 (8) |
N1—C1 | 1.354 (3) | C12—H12 | 0.93 |
N1—C8 | 1.419 (4) | C13—H13 | 0.93 |
N1—C8D | 1.428 (4) | C14—H14A | 0.96 |
N1—H1N | 0.883 (16) | C14—H14B | 0.96 |
O1—C1 | 1.222 (2) | C14—H14C | 0.96 |
C1—C2 | 1.484 (3) | C15—H15A | 0.96 |
C2—C3 | 1.374 (3) | C15—H15B | 0.96 |
C2—C7 | 1.390 (3) | C15—H15C | 0.96 |
C3—C4 | 1.373 (3) | C8D—C9D | 1.39 |
C3—H3 | 0.93 | C8D—C13D | 1.39 |
C4—C5 | 1.376 (3) | C9D—C10D | 1.39 |
C4—H4 | 0.93 | C9D—C14D | 1.538 (16) |
C5—C6 | 1.361 (3) | C10D—C11D | 1.39 |
C5—H5 | 0.93 | C10D—C15D | 1.523 (15) |
C6—C7 | 1.372 (3) | C11D—C12D | 1.39 |
C6—H6 | 0.93 | C11D—H11D | 0.93 |
C7—H7 | 0.93 | C12D—C13D | 1.39 |
C8—C9 | 1.361 (4) | C12D—H12D | 0.93 |
C8—C13 | 1.426 (6) | C13D—H13D | 0.93 |
C9—C10 | 1.412 (6) | C14D—H14D | 0.96 |
C9—C14 | 1.497 (5) | C14D—H14E | 0.96 |
C10—C11 | 1.379 (7) | C14D—H14F | 0.96 |
C10—C15 | 1.499 (5) | C15D—H15D | 0.96 |
C11—C12 | 1.353 (6) | C15D—H15E | 0.96 |
C11—H11 | 0.93 | C15D—H15F | 0.96 |
C12—C13 | 1.361 (6) | ||
C1—N1—C8 | 123.6 (2) | C10—C11—H11 | 117.9 |
C1—N1—C8D | 113.0 (6) | C11—C12—C13 | 119.9 (4) |
C1—N1—H1N | 122.1 (14) | C11—C12—H12 | 120 |
C8—N1—H1N | 108.8 (15) | C13—C12—H12 | 120 |
C8D—N1—H1N | 124.2 (15) | C12—C13—C8 | 117.6 (4) |
O1—C1—N1 | 122.11 (19) | C12—C13—H13 | 121.2 |
O1—C1—C2 | 120.35 (18) | C8—C13—H13 | 121.2 |
N1—C1—C2 | 117.54 (16) | C9D—C8D—C13D | 120 |
C3—C2—C7 | 118.64 (19) | C9D—C8D—N1 | 112.4 (8) |
C3—C2—C1 | 117.75 (17) | C13D—C8D—N1 | 127.6 (8) |
C7—C2—C1 | 123.60 (18) | C10D—C9D—C8D | 120 |
C4—C3—C2 | 121.16 (19) | C10D—C9D—C14D | 114.9 (11) |
C4—C3—H3 | 119.4 | C8D—C9D—C14D | 125.1 (11) |
C2—C3—H3 | 119.4 | C9D—C10D—C11D | 120 |
C3—C4—C5 | 119.5 (2) | C9D—C10D—C15D | 129.3 (10) |
C3—C4—H4 | 120.3 | C11D—C10D—C15D | 110.7 (10) |
C5—C4—H4 | 120.3 | C12D—C11D—C10D | 120 |
C6—C5—C4 | 120.0 (2) | C12D—C11D—H11D | 120 |
C6—C5—H5 | 120 | C10D—C11D—H11D | 120 |
C4—C5—H5 | 120 | C11D—C12D—C13D | 120 |
C5—C6—C7 | 120.8 (2) | C11D—C12D—H12D | 120 |
C5—C6—H6 | 119.6 | C13D—C12D—H12D | 120 |
C7—C6—H6 | 119.6 | C12D—C13D—C8D | 120 |
C6—C7—C2 | 119.9 (2) | C12D—C13D—H13D | 120 |
C6—C7—H7 | 120.1 | C8D—C13D—H13D | 120 |
C2—C7—H7 | 120.1 | C9D—C14D—H14D | 109.5 |
C9—C8—N1 | 119.6 (4) | C9D—C14D—H14E | 109.5 |
C9—C8—C13 | 122.0 (3) | H14D—C14D—H14E | 109.5 |
N1—C8—C13 | 118.3 (3) | C9D—C14D—H14F | 109.5 |
C8—C9—C10 | 119.1 (4) | H14D—C14D—H14F | 109.5 |
C8—C9—C14 | 121.6 (4) | H14E—C14D—H14F | 109.5 |
C10—C9—C14 | 119.2 (4) | C10D—C15D—H15D | 109.5 |
C11—C10—C9 | 116.9 (4) | C10D—C15D—H15E | 109.5 |
C11—C10—C15 | 121.8 (5) | H15D—C15D—H15E | 109.5 |
C9—C10—C15 | 121.3 (4) | C10D—C15D—H15F | 109.5 |
C12—C11—C10 | 124.2 (4) | H15D—C15D—H15F | 109.5 |
C12—C11—H11 | 117.9 | H15E—C15D—H15F | 109.5 |
C8—N1—C1—O1 | 9.3 (4) | C8—C9—C10—C15 | −175.3 (4) |
C8D—N1—C1—O1 | −10.7 (6) | C14—C9—C10—C15 | 5.9 (7) |
C8—N1—C1—C2 | −170.1 (3) | C9—C10—C11—C12 | −0.4 (8) |
C8D—N1—C1—C2 | 169.9 (6) | C15—C10—C11—C12 | 178.8 (6) |
O1—C1—C2—C3 | −22.5 (3) | C10—C11—C12—C13 | −1.4 (9) |
N1—C1—C2—C3 | 156.95 (19) | C11—C12—C13—C8 | −0.4 (8) |
O1—C1—C2—C7 | 157.7 (2) | C9—C8—C13—C12 | 4.0 (6) |
N1—C1—C2—C7 | −22.8 (3) | N1—C8—C13—C12 | −176.6 (4) |
C7—C2—C3—C4 | 0.9 (3) | C1—N1—C8D—C9D | 122.9 (7) |
C1—C2—C3—C4 | −178.90 (19) | C8—N1—C8D—C9D | −2.8 (14) |
C2—C3—C4—C5 | −1.5 (3) | C1—N1—C8D—C13D | −55.9 (9) |
C3—C4—C5—C6 | 0.6 (4) | C8—N1—C8D—C13D | 178 (3) |
C4—C5—C6—C7 | 0.8 (4) | C13D—C8D—C9D—C10D | 0 |
C5—C6—C7—C2 | −1.3 (4) | N1—C8D—C9D—C10D | −178.9 (12) |
C3—C2—C7—C6 | 0.5 (3) | C13D—C8D—C9D—C14D | −179.0 (17) |
C1—C2—C7—C6 | −179.7 (2) | N1—C8D—C9D—C14D | 2.1 (18) |
C1—N1—C8—C9 | −66.2 (4) | C8D—C9D—C10D—C11D | 0 |
C8D—N1—C8—C9 | −2.2 (18) | C14D—C9D—C10D—C11D | 179.1 (15) |
C1—N1—C8—C13 | 114.4 (4) | C8D—C9D—C10D—C15D | −179.8 (18) |
C8D—N1—C8—C13 | 178 (2) | C14D—C9D—C10D—C15D | −0.7 (19) |
N1—C8—C9—C10 | 174.8 (4) | C9D—C10D—C11D—C12D | 0 |
C13—C8—C9—C10 | −5.8 (6) | C15D—C10D—C11D—C12D | 179.8 (15) |
N1—C8—C9—C14 | −6.4 (6) | C10D—C11D—C12D—C13D | 0 |
C13—C8—C9—C14 | 173.0 (4) | C11D—C12D—C13D—C8D | 0 |
C8—C9—C10—C11 | 3.9 (6) | C9D—C8D—C13D—C12D | 0 |
C14—C9—C10—C11 | −174.9 (4) | N1—C8D—C13D—C12D | 178.7 (14) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O1i | 0.88 (2) | 2.03 (2) | 2.907 (2) | 173 (2) |
C14—H14C···N1 | 0.96 | 2.39 | 2.852 (4) | 109 |
Symmetry code: (i) −x+1/2, y+1/2, z. |
Experimental details
Crystal data | |
Chemical formula | C15H15NO |
Mr | 225.28 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 295 |
a, b, c (Å) | 8.4656 (2), 9.4848 (2), 31.0957 (9) |
V (Å3) | 2496.81 (11) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.08 |
Crystal size (mm) | 0.52 × 0.16 × 0.05 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur System diffractometer |
Absorption correction | Multi-scan (CrysAlis RED; Oxford Diffraction, 2008) |
Tmin, Tmax | 0.963, 0.996 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 48994, 2409, 1572 |
Rint | 0.052 |
(sin θ/λ)max (Å−1) | 0.615 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.052, 0.146, 1.05 |
No. of reflections | 2409 |
No. of parameters | 222 |
No. of restraints | 14 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.10, −0.14 |
Computer programs: CrysAlis CCD (Oxford Diffraction, 2008), CrysAlis RED (Oxford Diffraction, 2008), SHELXS97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2002), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009) and WinGX (Farrugia, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O1i | 0.883 (16) | 2.028 (17) | 2.907 (2) | 173 (2) |
C14—H14C···N1 | 0.96 | 2.39 | 2.852 (4) | 109 |
Symmetry code: (i) −x+1/2, y+1/2, z. |
Acknowledgements
MT and JK thank the Grant Agency of the Slovak Republic (grant No. VEGA 1/0817/08) and the Structural Funds, Interreg IIIA, for financial support in purchasing the diffractometer.
References
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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.
As part of our continuing efforts to explore the effect of substituents on the solid state geometries of benzanilides (Gowda et al., 2003, 2007, 2008a,b), in the present work, the structure of N-(2,3-dimethylphenyl)benzamide (N23DMPBA) has been determined. The conformation of the N—H bond in N23DMPBA is anti to both the ortho and meta-methyl substituents in the aniline benzene ring (Fig. 1), in contrast to the syn conformations observed with respect to both the ortho and meta-chloro substituents in N-(2,3-dichlorophenyl)benzamide (N23DCPBA)(Gowda et al., 2007), while the conformations of the N—H and C=O bonds in the amide group of N23DMPBA are anti to each other, similar to that observed in N23DCPBA, N-(2,6-dimethylphenyl)benzamide (Azumaya et al., 1994; Gowda et al., 2008b), N-(3,4-dimethylphenyl)benzamide (Gowda et al., 2008a) and other benzanilides (Gowda et al., 2003). In the crystal structure, the N—H···O hydrogen bonds link the molecules into chains running along the b axis (Table 1 & Fig. 2), while the structure is stabilized by C—H···N intramolecular hydrogen bond with atom C14 as donor and atom N1 as acceptor. The atoms of anilino ring (including the methyl groups) are positionally disordered (Fig. 3) with site occupancy factor 0.80 for major component (atoms C8 to C15) and 0.20 for minor component (C8d to C15d). The disordered orientations of anilino ring are essentially planar, forming a dihedral angle of 1.5 (7)°. The dihedral angle between the benzoyl and anilino ring (major) is 84.1 (2)°. The amido group is twisted by 23.0 (3)° out of the plane of benzoyl ring.