organic compounds
N-(4-nitrophenyl)carbamate
of phenylaDepartment of Physics, Presidency College (Autonomous), Chennai 600 005, India, and bDepartment of Polymer Science, University of Madras, Guindy Campus, Chennai 600 025, India
*Correspondence e-mail: aspandian59@gmail.com
The 13H10N2O4, contains two independent molecules (A and B). The dihedral angle between the aromatic rings is 48.18 (14)° in molecule A and 45.81 (14)° in molecule B. The mean plane of the carbamate N—C(=O)—O group is twisted slightly from the attached benzene and phenyl rings, making respective dihedral angles of 12.97 (13) and 60.93 (14)° in A, and 23.11 (14) and 59.10 (14)° in B. In the crystal, A and B molecules are arranged alternately through N—H⋯O hydrogen bonds and C—H⋯π interactions, forming chains along the a axis. The chains are further linked by C—H⋯O hydrogen bonds into a double-chain structure.
of the title compound, CKeywords: crystal structure; carbamate; ester; nitrophenyl carbamate; hydrogen bonding; C—H⋯π interaction.
CCDC reference: 1436927
1. Related literature
For the details of biological activity of carbamate derivatives, see: O'Donnell et al. (1979); Bubert et al. (2007). For applications of the carbamate group as a building block in crystal engineering, see: Ghosh et al. (2006). For polymorphs of phenyl carbamate, see: Wishkerman & Bernstein (2008).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: PLATON (Spek, 2009).
Supporting information
CCDC reference: 1436927
https://doi.org/10.1107/S2056989015021544/is5423sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989015021544/is5423Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S2056989015021544/is5423Isup3.cml
To a stirred solution of 1.0 g (5.45 mmol) of 4-nitroaniline dissolved in 100 ml of dry THF was added calculated amount with 5% excess of phenylchloroforamate in 50ml of dry THF. The addition rate was such that it took 1.5 hrs for complete transfer. After the addition was over, the stirring was continued overnight. Excess THF was removed under vacuum at room temperature. The crude product was extracted with ethyl acetate (3×100 ml). The organic layer was dried over anhydrous sodium sulphate. Removal of solvent under vacuum at room temperature yielded light yellow product and the product was dried under vacuum to constant weight. Light yellow crystals were obtained by slow evaporation of an ethyl acetate solution at room temperature (yield 99%).
The N- and C-bound H atoms were positioned geometrically (N—H = 0.86 Å and C—H = 0.93–0.97 Å) and allowed to ride on their parent atoms, with Uiso(H) = 1.2Ueq(N, C).
The carbamate group is known in biochemistry for its role in biological process. For example it tunes haemoglobin affinity for O2 during physiological respiration (O'Donnell et al., 1979). Carbamate derivatives present significant pharmacological activity, in some cases exhibiting potential anticancer drugs (Bubert et al., 2007). In the solid state, the carbamate group acts as both donor and acceptor in hydrogen bonding, favoring the formation of highly stable synthons. Thus, the carbamate group has been proposed in crystal engineering as a building block for hydrogen bonded solids (Ghosh et al., 2006). Most carbamate compounds of interest are phenyl derivatives. In the known polymorphs of one such compound, phenyl carbamate, the molecular environment is very similar around the carbamate group but very different around the phenyl ring (Wishkerman & Bernstein, 2008). As part of our studies in this area, we report herein on the synthesis of phenyl 4-nitrophenylcarbamate.
Two molecules (A and B) present in the π interactions (Table 1), leading to formation of a hydrogen bonded chain along [100] (Fig. 2). A C—H···O interaction is also observed between the chains.
(Fig. 1) have nitrophenyl groups exhibiting planar conformations, with their maximum deviations of 0.0207 Å for atom O1 in molecule A and 0.0186 Å for atom N3 in molecule B. In molecule A the nitrophenyl ring (C1–C6) makes a dihedral angle of 48.18 (14)° with the phenyl ring (C8–C13), while in B the C14–C19 ring makes a dihedral angle of 45.81 (41)° with the C21–C26 ring. In the crystal, molecules are linked to one another by N—H···O and C—H···For the details of biological activity of carbamate derivatives, see: O'Donnell et al. (1979); Bubert et al. (2007). For applications of the carbamate group as a building block in crystal engineering, see: Ghosh et al. (2006). For polymorphs of phenyl carbamate, see: Wishkerman & Bernstein (2008).
Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: PLATON (Spek, 2009).Fig. 1. A view of two independent molecules (A and B) of the title compound, showing the atom labelling. Displacement ellipsoids are drawn at the 30% probability level. | |
Fig. 2. A partial packing view of the title compound. The N—H···O and C—H···O hydrogen bonds are indicated by dashed lines. |
C13H10N2O4 | Z = 4 |
Mr = 258.23 | F(000) = 536 |
Triclinic, P1 | Dx = 1.444 Mg m−3 |
a = 9.6722 (3) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 10.2543 (5) Å | Cell parameters from 2713 reflections |
c = 12.4787 (6) Å | θ = 1.7–26.7° |
α = 84.625 (3)° | µ = 0.11 mm−1 |
β = 79.386 (3)° | T = 293 K |
γ = 77.955 (3)° | Block, yellow |
V = 1187.73 (9) Å3 | 0.20 × 0.18 × 0.17 mm |
Bruker Kappa APEXII CCD diffractometer | 2713 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.051 |
ω and φ scan | θmax = 26.7°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −12→12 |
Tmin = 0.978, Tmax = 0.982 | k = −12→12 |
26582 measured reflections | l = −15→15 |
4755 independent 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) = 0.127 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0314P)2 + 0.7359P] where P = (Fo2 + 2Fc2)/3 |
4755 reflections | (Δ/σ)max = 0.001 |
343 parameters | Δρmax = 0.20 e Å−3 |
0 restraints | Δρmin = −0.18 e Å−3 |
C13H10N2O4 | γ = 77.955 (3)° |
Mr = 258.23 | V = 1187.73 (9) Å3 |
Triclinic, P1 | Z = 4 |
a = 9.6722 (3) Å | Mo Kα radiation |
b = 10.2543 (5) Å | µ = 0.11 mm−1 |
c = 12.4787 (6) Å | T = 293 K |
α = 84.625 (3)° | 0.20 × 0.18 × 0.17 mm |
β = 79.386 (3)° |
Bruker Kappa APEXII CCD diffractometer | 4755 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 2713 reflections with I > 2σ(I) |
Tmin = 0.978, Tmax = 0.982 | Rint = 0.051 |
26582 measured reflections |
R[F2 > 2σ(F2)] = 0.054 | 0 restraints |
wR(F2) = 0.127 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.20 e Å−3 |
4755 reflections | Δρmin = −0.18 e Å−3 |
343 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. |
x | y | z | Uiso*/Ueq | ||
O1 | 0.1987 (3) | 1.4653 (3) | 0.2962 (2) | 0.1211 (11) | |
O2 | 0.4178 (3) | 1.3760 (3) | 0.2866 (2) | 0.1112 (10) | |
O3 | 0.14804 (16) | 0.94691 (18) | 0.85885 (14) | 0.0536 (5) | |
O4 | 0.36223 (17) | 0.98269 (19) | 0.76845 (16) | 0.0623 (6) | |
O5 | 0.6977 (2) | 0.6060 (2) | 1.24825 (17) | 0.0808 (7) | |
O6 | 0.9181 (3) | 0.5613 (3) | 1.1749 (2) | 0.1056 (9) | |
O7 | 0.64969 (17) | 1.0924 (2) | 0.67313 (15) | 0.0636 (6) | |
O8 | 0.86028 (16) | 1.01542 (18) | 0.73187 (14) | 0.0503 (5) | |
N1 | 0.2949 (3) | 1.3872 (3) | 0.3303 (2) | 0.0700 (7) | |
N2 | 0.15095 (19) | 1.0939 (2) | 0.72024 (16) | 0.0459 (6) | |
H2 | 0.0601 | 1.1063 | 0.7436 | 0.055* | |
N3 | 0.7953 (3) | 0.6162 (2) | 1.1734 (2) | 0.0624 (7) | |
N4 | 0.6566 (2) | 0.9385 (2) | 0.80607 (17) | 0.0538 (6) | |
H4 | 0.5708 | 0.9423 | 0.7947 | 0.065* | |
C1 | 0.3347 (2) | 1.1489 (3) | 0.5694 (2) | 0.0488 (7) | |
H1 | 0.4065 | 1.0882 | 0.5980 | 0.059* | |
C2 | 0.3674 (3) | 1.2201 (3) | 0.4728 (2) | 0.0525 (7) | |
H2A | 0.4612 | 1.2078 | 0.4353 | 0.063* | |
C3 | 0.2609 (3) | 1.3093 (3) | 0.4319 (2) | 0.0471 (7) | |
C4 | 0.1224 (3) | 1.3294 (3) | 0.4854 (2) | 0.0528 (7) | |
H4A | 0.0513 | 1.3904 | 0.4565 | 0.063* | |
C5 | 0.0896 (3) | 1.2587 (3) | 0.5818 (2) | 0.0496 (7) | |
H5 | −0.0044 | 1.2722 | 0.6189 | 0.060* | |
C6 | 0.1948 (2) | 1.1675 (2) | 0.62459 (19) | 0.0391 (6) | |
C7 | 0.2340 (3) | 1.0057 (3) | 0.7803 (2) | 0.0439 (6) | |
C8 | 0.2096 (2) | 0.8366 (3) | 0.9213 (2) | 0.0413 (6) | |
C9 | 0.1760 (3) | 0.8419 (3) | 1.0324 (2) | 0.0519 (7) | |
H9 | 0.1232 | 0.9194 | 1.0641 | 0.062* | |
C10 | 0.2220 (3) | 0.7299 (3) | 1.0962 (2) | 0.0597 (8) | |
H10 | 0.1989 | 0.7312 | 1.1719 | 0.072* | |
C11 | 0.3018 (3) | 0.6165 (3) | 1.0489 (2) | 0.0613 (8) | |
H11 | 0.3318 | 0.5408 | 1.0922 | 0.074* | |
C12 | 0.3366 (3) | 0.6156 (3) | 0.9380 (2) | 0.0588 (8) | |
H12 | 0.3931 | 0.5395 | 0.9061 | 0.071* | |
C13 | 0.2898 (3) | 0.7250 (3) | 0.8724 (2) | 0.0499 (7) | |
H13 | 0.3121 | 0.7233 | 0.7968 | 0.060* | |
C14 | 0.5899 (2) | 0.8313 (3) | 0.9790 (2) | 0.0491 (7) | |
H14 | 0.4949 | 0.8680 | 0.9737 | 0.059* | |
C15 | 0.6218 (3) | 0.7541 (3) | 1.0701 (2) | 0.0509 (7) | |
H15 | 0.5492 | 0.7392 | 1.1273 | 0.061* | |
C16 | 0.7617 (3) | 0.6991 (3) | 1.0757 (2) | 0.0472 (7) | |
C17 | 0.8703 (3) | 0.7182 (3) | 0.9922 (2) | 0.0574 (8) | |
H17 | 0.9647 | 0.6782 | 0.9970 | 0.069* | |
C18 | 0.8386 (3) | 0.7970 (3) | 0.9014 (2) | 0.0586 (8) | |
H18 | 0.9117 | 0.8111 | 0.8444 | 0.070* | |
C19 | 0.6979 (2) | 0.8553 (3) | 0.8949 (2) | 0.0438 (6) | |
C20 | 0.7362 (3) | 1.0130 (3) | 0.7368 (2) | 0.0459 (7) | |
C21 | 0.7079 (2) | 1.1696 (3) | 0.5852 (2) | 0.0446 (7) | |
C22 | 0.6464 (3) | 1.3018 (3) | 0.5788 (2) | 0.0579 (8) | |
H22 | 0.5761 | 1.3390 | 0.6350 | 0.070* | |
C23 | 0.6904 (3) | 1.3792 (3) | 0.4876 (3) | 0.0634 (8) | |
H23 | 0.6487 | 1.4693 | 0.4817 | 0.076* | |
C24 | 0.7946 (3) | 1.3247 (3) | 0.4059 (2) | 0.0636 (8) | |
H24 | 0.8240 | 1.3774 | 0.3445 | 0.076* | |
C25 | 0.8553 (3) | 1.1925 (3) | 0.4147 (2) | 0.0611 (8) | |
H25 | 0.9269 | 1.1554 | 0.3593 | 0.073* | |
C26 | 0.8121 (3) | 1.1135 (3) | 0.5045 (2) | 0.0523 (7) | |
H26 | 0.8533 | 1.0232 | 0.5101 | 0.063* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0914 (18) | 0.159 (3) | 0.0944 (19) | −0.0135 (17) | −0.0231 (15) | 0.0760 (19) |
O2 | 0.0793 (17) | 0.134 (2) | 0.0881 (18) | −0.0056 (15) | 0.0246 (14) | 0.0447 (16) |
O3 | 0.0328 (9) | 0.0660 (13) | 0.0531 (11) | −0.0047 (8) | −0.0035 (8) | 0.0224 (10) |
O4 | 0.0300 (10) | 0.0772 (14) | 0.0786 (14) | −0.0164 (9) | −0.0170 (8) | 0.0295 (11) |
O5 | 0.0936 (16) | 0.0871 (17) | 0.0543 (13) | −0.0163 (13) | −0.0073 (12) | 0.0208 (12) |
O6 | 0.0705 (16) | 0.129 (2) | 0.108 (2) | −0.0078 (14) | −0.0356 (14) | 0.0576 (17) |
O7 | 0.0348 (9) | 0.0821 (14) | 0.0709 (13) | −0.0169 (9) | −0.0156 (9) | 0.0368 (11) |
O8 | 0.0310 (10) | 0.0694 (13) | 0.0513 (11) | −0.0153 (8) | −0.0097 (7) | 0.0104 (9) |
N1 | 0.0719 (18) | 0.081 (2) | 0.0531 (16) | −0.0175 (15) | −0.0082 (14) | 0.0196 (14) |
N2 | 0.0286 (10) | 0.0535 (14) | 0.0510 (13) | −0.0052 (9) | −0.0061 (9) | 0.0132 (11) |
N3 | 0.0702 (17) | 0.0595 (17) | 0.0613 (17) | −0.0180 (13) | −0.0243 (14) | 0.0153 (13) |
N4 | 0.0299 (11) | 0.0725 (16) | 0.0599 (14) | −0.0180 (10) | −0.0155 (10) | 0.0251 (12) |
C1 | 0.0329 (13) | 0.0548 (17) | 0.0563 (17) | −0.0070 (11) | −0.0096 (11) | 0.0102 (14) |
C2 | 0.0391 (14) | 0.0621 (19) | 0.0530 (17) | −0.0124 (13) | −0.0011 (12) | 0.0062 (15) |
C3 | 0.0491 (15) | 0.0500 (17) | 0.0435 (15) | −0.0159 (12) | −0.0096 (12) | 0.0084 (13) |
C4 | 0.0469 (15) | 0.0531 (17) | 0.0579 (18) | −0.0072 (12) | −0.0186 (13) | 0.0139 (14) |
C5 | 0.0351 (13) | 0.0547 (17) | 0.0549 (17) | −0.0056 (12) | −0.0071 (12) | 0.0097 (14) |
C6 | 0.0344 (13) | 0.0403 (15) | 0.0443 (14) | −0.0118 (10) | −0.0099 (10) | 0.0051 (12) |
C7 | 0.0365 (15) | 0.0479 (16) | 0.0472 (16) | −0.0110 (11) | −0.0080 (11) | 0.0063 (13) |
C8 | 0.0290 (12) | 0.0490 (16) | 0.0443 (15) | −0.0095 (11) | −0.0080 (10) | 0.0126 (13) |
C9 | 0.0414 (14) | 0.0629 (19) | 0.0455 (16) | −0.0051 (12) | −0.0014 (12) | 0.0031 (14) |
C10 | 0.0542 (17) | 0.079 (2) | 0.0406 (16) | −0.0099 (16) | −0.0061 (13) | 0.0144 (16) |
C11 | 0.0563 (17) | 0.058 (2) | 0.064 (2) | −0.0100 (15) | −0.0107 (14) | 0.0228 (16) |
C12 | 0.0589 (17) | 0.0484 (18) | 0.065 (2) | −0.0080 (13) | −0.0074 (14) | 0.0034 (15) |
C13 | 0.0479 (15) | 0.0591 (19) | 0.0429 (15) | −0.0130 (13) | −0.0076 (12) | 0.0018 (14) |
C14 | 0.0332 (13) | 0.0536 (17) | 0.0589 (17) | −0.0096 (11) | −0.0090 (12) | 0.0099 (14) |
C15 | 0.0448 (15) | 0.0521 (17) | 0.0533 (17) | −0.0117 (12) | −0.0043 (12) | 0.0071 (14) |
C16 | 0.0521 (16) | 0.0434 (16) | 0.0503 (16) | −0.0153 (12) | −0.0187 (12) | 0.0105 (13) |
C17 | 0.0390 (14) | 0.0611 (19) | 0.072 (2) | −0.0110 (13) | −0.0189 (13) | 0.0191 (16) |
C18 | 0.0343 (14) | 0.075 (2) | 0.0627 (18) | −0.0133 (13) | −0.0083 (12) | 0.0220 (16) |
C19 | 0.0365 (13) | 0.0477 (16) | 0.0500 (16) | −0.0154 (11) | −0.0136 (11) | 0.0111 (13) |
C20 | 0.0339 (14) | 0.0576 (18) | 0.0459 (15) | −0.0101 (12) | −0.0106 (11) | 0.0087 (13) |
C21 | 0.0347 (13) | 0.0532 (17) | 0.0479 (16) | −0.0141 (12) | −0.0143 (11) | 0.0143 (13) |
C22 | 0.0448 (15) | 0.063 (2) | 0.0610 (19) | −0.0023 (14) | −0.0077 (13) | 0.0014 (16) |
C23 | 0.0658 (19) | 0.0501 (19) | 0.078 (2) | −0.0123 (15) | −0.0277 (17) | 0.0120 (17) |
C24 | 0.0667 (19) | 0.074 (2) | 0.0555 (19) | −0.0270 (17) | −0.0215 (16) | 0.0217 (17) |
C25 | 0.0630 (18) | 0.078 (2) | 0.0417 (17) | −0.0143 (16) | −0.0068 (13) | −0.0018 (16) |
C26 | 0.0522 (16) | 0.0511 (17) | 0.0557 (18) | −0.0097 (13) | −0.0163 (13) | 0.0006 (14) |
O3—C7 | 1.347 (3) | C5—C4 | 1.365 (3) |
O3—C8 | 1.402 (3) | C5—H5 | 0.9300 |
O8—C20 | 1.196 (3) | C14—C15 | 1.368 (3) |
O7—C20 | 1.354 (3) | C14—H14 | 0.9300 |
O7—C21 | 1.394 (3) | C9—C10 | 1.377 (4) |
N2—C7 | 1.348 (3) | C9—H9 | 0.9300 |
N2—C6 | 1.397 (3) | C15—C16 | 1.365 (3) |
N2—H2 | 0.8600 | C15—H15 | 0.9300 |
O4—C7 | 1.197 (3) | C13—C12 | 1.373 (4) |
C6—C5 | 1.380 (3) | C13—H13 | 0.9300 |
C6—C1 | 1.384 (3) | C10—C11 | 1.372 (4) |
N4—C20 | 1.341 (3) | C10—H10 | 0.9300 |
N4—C19 | 1.401 (3) | C4—C3 | 1.365 (3) |
N4—H4 | 0.8600 | C4—H4A | 0.9300 |
C19—C14 | 1.381 (3) | C17—C16 | 1.368 (4) |
C19—C18 | 1.381 (3) | C17—C18 | 1.373 (3) |
N1—O2 | 1.200 (3) | C17—H17 | 0.9300 |
N1—O1 | 1.208 (3) | C26—C25 | 1.373 (4) |
N1—C3 | 1.457 (3) | C26—H26 | 0.9300 |
C1—C2 | 1.370 (3) | C25—C24 | 1.363 (4) |
C1—H1 | 0.9300 | C25—H25 | 0.9300 |
C8—C13 | 1.367 (3) | C18—H18 | 0.9300 |
C8—C9 | 1.367 (3) | C22—C23 | 1.379 (4) |
C21—C26 | 1.361 (4) | C22—H22 | 0.9300 |
C21—C22 | 1.363 (4) | C12—C11 | 1.364 (4) |
O5—N3 | 1.213 (3) | C12—H12 | 0.9300 |
C2—C3 | 1.368 (3) | C11—H11 | 0.9300 |
C2—H2A | 0.9300 | C23—C24 | 1.364 (4) |
N3—O6 | 1.206 (3) | C23—H23 | 0.9300 |
N3—C16 | 1.467 (3) | C24—H24 | 0.9300 |
C7—O3—C8 | 118.89 (17) | C10—C9—H9 | 120.7 |
C20—O7—C21 | 120.14 (18) | C16—C15—C14 | 119.0 (2) |
C7—N2—C6 | 127.80 (19) | C16—C15—H15 | 120.5 |
C7—N2—H2 | 116.1 | C14—C15—H15 | 120.5 |
C6—N2—H2 | 116.1 | C8—C13—C12 | 118.3 (3) |
C5—C6—C1 | 119.4 (2) | C8—C13—H13 | 120.9 |
C5—C6—N2 | 117.0 (2) | C12—C13—H13 | 120.9 |
C1—C6—N2 | 123.6 (2) | C11—C10—C9 | 120.4 (3) |
C20—N4—C19 | 127.1 (2) | C11—C10—H10 | 119.8 |
C20—N4—H4 | 116.4 | C9—C10—H10 | 119.8 |
C19—N4—H4 | 116.4 | C3—C4—C5 | 119.2 (2) |
C14—C19—C18 | 119.6 (2) | C3—C4—H4A | 120.4 |
C14—C19—N4 | 116.9 (2) | C5—C4—H4A | 120.4 |
C18—C19—N4 | 123.4 (2) | C16—C17—C18 | 119.4 (2) |
O8—C20—N4 | 127.9 (2) | C16—C17—H17 | 120.3 |
O8—C20—O7 | 124.1 (2) | C18—C17—H17 | 120.3 |
N4—C20—O7 | 108.0 (2) | C15—C16—C17 | 121.7 (2) |
O4—C7—O3 | 124.7 (2) | C15—C16—N3 | 118.8 (2) |
O4—C7—N2 | 127.0 (2) | C17—C16—N3 | 119.5 (2) |
O3—C7—N2 | 108.37 (19) | C4—C3—C2 | 121.5 (2) |
O2—N1—O1 | 122.7 (3) | C4—C3—N1 | 118.7 (2) |
O2—N1—C3 | 118.9 (3) | C2—C3—N1 | 119.9 (2) |
O1—N1—C3 | 118.4 (3) | C21—C26—C25 | 118.8 (3) |
C2—C1—C6 | 119.9 (2) | C21—C26—H26 | 120.6 |
C2—C1—H1 | 120.0 | C25—C26—H26 | 120.6 |
C6—C1—H1 | 120.0 | C24—C25—C26 | 120.7 (3) |
C13—C8—C9 | 122.0 (2) | C24—C25—H25 | 119.6 |
C13—C8—O3 | 120.8 (2) | C26—C25—H25 | 119.6 |
C9—C8—O3 | 117.0 (2) | C17—C18—C19 | 119.8 (2) |
C26—C21—C22 | 121.6 (2) | C17—C18—H18 | 120.1 |
C26—C21—O7 | 121.5 (2) | C19—C18—H18 | 120.1 |
C22—C21—O7 | 116.7 (2) | C21—C22—C23 | 118.7 (3) |
C3—C2—C1 | 119.4 (2) | C21—C22—H22 | 120.6 |
C3—C2—H2A | 120.3 | C23—C22—H22 | 120.6 |
C1—C2—H2A | 120.3 | C11—C12—C13 | 121.2 (3) |
O6—N3—O5 | 123.6 (3) | C11—C12—H12 | 119.4 |
O6—N3—C16 | 118.3 (3) | C13—C12—H12 | 119.4 |
O5—N3—C16 | 118.1 (2) | C12—C11—C10 | 119.5 (3) |
C4—C5—C6 | 120.6 (2) | C12—C11—H11 | 120.2 |
C4—C5—H5 | 119.7 | C10—C11—H11 | 120.2 |
C6—C5—H5 | 119.7 | C24—C23—C22 | 120.6 (3) |
C15—C14—C19 | 120.5 (2) | C24—C23—H23 | 119.7 |
C15—C14—H14 | 119.7 | C22—C23—H23 | 119.7 |
C19—C14—H14 | 119.7 | C25—C24—C23 | 119.6 (3) |
C8—C9—C10 | 118.6 (3) | C25—C24—H24 | 120.2 |
C8—C9—H9 | 120.7 | C23—C24—H24 | 120.2 |
C7—N2—C6—C5 | −175.7 (3) | C14—C15—C16—C17 | −0.7 (4) |
C7—N2—C6—C1 | 7.5 (4) | C14—C15—C16—N3 | −180.0 (3) |
C20—N4—C19—C14 | 154.4 (3) | C18—C17—C16—C15 | 1.4 (5) |
C20—N4—C19—C18 | −25.8 (5) | C18—C17—C16—N3 | −179.3 (3) |
C19—N4—C20—O8 | 6.2 (5) | O6—N3—C16—C15 | 175.5 (3) |
C19—N4—C20—O7 | −171.3 (3) | O5—N3—C16—C15 | −4.1 (4) |
C21—O7—C20—O8 | 9.8 (4) | O6—N3—C16—C17 | −3.8 (4) |
C21—O7—C20—N4 | −172.6 (2) | O5—N3—C16—C17 | 176.6 (3) |
C8—O3—C7—O4 | −10.3 (4) | C5—C4—C3—C2 | −0.1 (4) |
C8—O3—C7—N2 | 170.2 (2) | C5—C4—C3—N1 | −178.8 (3) |
C6—N2—C7—O4 | 7.1 (5) | C1—C2—C3—C4 | 0.1 (4) |
C6—N2—C7—O3 | −173.4 (2) | C1—C2—C3—N1 | 178.9 (3) |
C5—C6—C1—C2 | −0.5 (4) | O2—N1—C3—C4 | 175.4 (3) |
N2—C6—C1—C2 | 176.3 (3) | O1—N1—C3—C4 | −1.0 (5) |
C7—O3—C8—C13 | −57.6 (3) | O2—N1—C3—C2 | −3.4 (5) |
C7—O3—C8—C9 | 127.5 (3) | O1—N1—C3—C2 | −179.8 (3) |
C20—O7—C21—C26 | 56.3 (4) | C22—C21—C26—C25 | −0.3 (4) |
C20—O7—C21—C22 | −129.3 (3) | O7—C21—C26—C25 | 173.8 (2) |
C6—C1—C2—C3 | 0.1 (4) | C21—C26—C25—C24 | −0.4 (4) |
C1—C6—C5—C4 | 0.5 (4) | C16—C17—C18—C19 | −0.4 (5) |
N2—C6—C5—C4 | −176.5 (3) | C14—C19—C18—C17 | −1.3 (5) |
C18—C19—C14—C15 | 2.1 (4) | N4—C19—C18—C17 | 179.0 (3) |
N4—C19—C14—C15 | −178.2 (3) | C26—C21—C22—C23 | 0.7 (4) |
C13—C8—C9—C10 | −1.7 (4) | O7—C21—C22—C23 | −173.6 (2) |
O3—C8—C9—C10 | 173.2 (2) | C8—C13—C12—C11 | 1.3 (4) |
C19—C14—C15—C16 | −1.1 (4) | C13—C12—C11—C10 | −1.8 (5) |
C9—C8—C13—C12 | 0.5 (4) | C9—C10—C11—C12 | 0.5 (5) |
O3—C8—C13—C12 | −174.2 (2) | C21—C22—C23—C24 | −0.6 (5) |
C8—C9—C10—C11 | 1.2 (4) | C26—C25—C24—C23 | 0.6 (5) |
C6—C5—C4—C3 | −0.3 (4) | C22—C23—C24—C25 | −0.1 (5) |
Cg2 is the centroid of the C8–C13 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O8i | 0.86 | 2.35 | 3.057 (2) | 140 |
N4—H4···O4 | 0.86 | 2.05 | 2.906 (2) | 171 |
C25—H25···O8ii | 0.93 | 2.57 | 3.448 (4) | 158 |
C14—H14···Cg2 | 0.93 | 2.94 | 3.592 (2) | 128 |
C17—H17···Cg2iii | 0.93 | 2.94 | 3.736 (3) | 144 |
Symmetry codes: (i) x−1, y, z; (ii) −x+2, −y+2, −z+1; (iii) x+1, y, z. |
Cg2 is the centroid of the C8–C13 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O8i | 0.86 | 2.35 | 3.057 (2) | 140 |
N4—H4···O4 | 0.86 | 2.05 | 2.906 (2) | 171 |
C25—H25···O8ii | 0.93 | 2.57 | 3.448 (4) | 158 |
C14—H14···Cg2 | 0.93 | 2.94 | 3.592 (2) | 128 |
C17—H17···Cg2iii | 0.93 | 2.94 | 3.736 (3) | 144 |
Symmetry codes: (i) x−1, y, z; (ii) −x+2, −y+2, −z+1; (iii) x+1, y, z. |
Acknowledgements
The authors thank Dr Babu Varghese, SAIF, IIT, Chennai, India, for the data collection.
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The carbamate group is known in biochemistry for its role in biological process. For example it tunes haemoglobin affinity for O2 during physiological respiration (O'Donnell et al., 1979). Carbamate derivatives present significant pharmacological activity, in some cases exhibiting potential anticancer drugs (Bubert et al., 2007). In the solid state, the carbamate group acts as both donor and acceptor in hydrogen bonding, favoring the formation of highly stable synthons. Thus, the carbamate group has been proposed in crystal engineering as a building block for hydrogen bonded solids (Ghosh et al., 2006). Most carbamate compounds of interest are phenyl derivatives. In the known polymorphs of one such compound, phenyl carbamate, the molecular environment is very similar around the carbamate group but very different around the phenyl ring (Wishkerman & Bernstein, 2008). As part of our studies in this area, we report herein on the synthesis of phenyl 4-nitrophenylcarbamate.
Two molecules (A and B) present in the asymmetric unit (Fig. 1) have nitrophenyl groups exhibiting planar conformations, with their maximum deviations of 0.0207 Å for atom O1 in molecule A and 0.0186 Å for atom N3 in molecule B. In molecule A the nitrophenyl ring (C1–C6) makes a dihedral angle of 48.18 (14)° with the phenyl ring (C8–C13), while in B the C14–C19 ring makes a dihedral angle of 45.81 (41)° with the C21–C26 ring. In the crystal, molecules are linked to one another by N—H···O and C—H···π interactions (Table 1), leading to formation of a hydrogen bonded chain along [100] (Fig. 2). A C—H···O interaction is also observed between the chains.