organic compounds
4-Nitro-N-(4-nitrobenzoyl)benzamide
aDepartment of Chemistry, Research Complex, Allama Iqbal Open University, Islamabad 44000, Pakistan, and bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: edward.tiekink@gmail.com
The central acetylacetamide moiety in the title compound, C14H9N3O6, is buckled [e.g. the C—N—C—O torsion angle is 14.3 (6)°] but the r.m.s. deviation for the five atoms is 0.044 Å. The benzene rings lie on the same side of the central plane, forming dihedral angles of 37.17 (15) and 28.58 (19)° with it. The dihedral angle between the two rings is 17.8 (2)° indicating that the molecule is curved. The carbonyl groups are syn to each other and anti to the amino H atom. This allows for the formation of N—H⋯O hydrogen bonds in the crystal, which leads to twisted chains along the b axis. Positional disorder (50:50) of the O atoms was modelled for both the nitro groups.
Related literature
For background to high-temperature polymers for replacement of ceramics and metals, see: Ataei et al. (2005); Im & Jung, (2000); Yang et al. (2002).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Agilent, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; 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, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536811014450/hb5852sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811014450/hb5852Isup2.hkl
All the reagents and organic solvents were of analytical grade and commercially available. The title compound was accidentally generated during the reaction of 4-nitrobenzoyl chloride with imidazole; it was isolated from the reaction mixture by
in 45% yield and then purified by re-crystallization from ethanol to give colourless prisms of (I). M.pt. 438–439 K; Anal.: C, 53.34; H, 2.88; N, 13.33%. C14H9N3O6 requires: C, 53.41; H, 2.87; N, 13.36%.Carbon-bound H-atoms were placed in calculated positions [C—H 0.93 Å, Uiso(H) 1.2Ueq(C)] and were included in the
in the riding model approximation. The amino H-atom was similarly placed [N–H 0.88 Å, Uiso(H) 1.2Ueq(N)].The nitro groups are disordered over two positions in respect of the O atoms; the disorder could not be refined, and was assumed to be a 1:1 type of disorder. For each group, the N—O distances were restrained to within ±0.01 Å of each other, and the four-atom CNO2 unit was restrained to be nearly flat. The displacement parameters were restrained to be nearly isotropic.
Data collection: CrysAlis PRO (Agilent, 2010); cell
CrysAlis PRO (Agilent, 2010); data reduction: CrysAlis PRO (Agilent, 2010); 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, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C14H9N3O6 | F(000) = 1296 |
Mr = 315.24 | Dx = 1.482 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 2137 reflections |
a = 13.4757 (7) Å | θ = 2.4–29.3° |
b = 8.5170 (6) Å | µ = 0.12 mm−1 |
c = 24.6285 (17) Å | T = 295 K |
V = 2826.7 (3) Å3 | Prism, colorless |
Z = 8 | 0.30 × 0.15 × 0.05 mm |
Agilent Technologies SuperNova Dual diffractometer with an Atlas detector | 2487 independent reflections |
Radiation source: SuperNova (Mo) X-ray Source | 1433 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.067 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 25.1°, θmin = 3.0° |
ω scans | h = −16→16 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | k = −10→8 |
Tmin = 0.965, Tmax = 0.994 | l = −29→29 |
13745 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.065 | H-atom parameters constrained |
wR(F2) = 0.217 | w = 1/[σ2(Fo2) + (0.0936P)2 + 1.8503P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max = 0.001 |
2487 reflections | Δρmax = 0.38 e Å−3 |
221 parameters | Δρmin = −0.31 e Å−3 |
40 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0036 (11) |
C14H9N3O6 | V = 2826.7 (3) Å3 |
Mr = 315.24 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 13.4757 (7) Å | µ = 0.12 mm−1 |
b = 8.5170 (6) Å | T = 295 K |
c = 24.6285 (17) Å | 0.30 × 0.15 × 0.05 mm |
Agilent Technologies SuperNova Dual diffractometer with an Atlas detector | 2487 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | 1433 reflections with I > 2σ(I) |
Tmin = 0.965, Tmax = 0.994 | Rint = 0.067 |
13745 measured reflections |
R[F2 > 2σ(F2)] = 0.065 | 40 restraints |
wR(F2) = 0.217 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.38 e Å−3 |
2487 reflections | Δρmin = −0.31 e Å−3 |
221 parameters |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
O1 | 0.975 (3) | 0.868 (3) | 0.4716 (10) | 0.092 (4) | 0.50 |
O2 | 1.1108 (6) | 0.774 (4) | 0.5041 (14) | 0.087 (3) | 0.50 |
O1' | 0.974 (3) | 0.835 (3) | 0.4633 (9) | 0.092 (4) | 0.50 |
O2' | 1.1072 (6) | 0.804 (4) | 0.5128 (14) | 0.087 (3) | 0.50 |
O3 | 0.84634 (19) | 0.2233 (3) | 0.64513 (11) | 0.0615 (8) | |
O4 | 0.67456 (19) | 0.1707 (3) | 0.70172 (11) | 0.0596 (8) | |
O5 | 0.1877 (10) | 0.4334 (12) | 0.7162 (4) | 0.100 (3) | 0.50 |
O6 | 0.2086 (12) | 0.5041 (11) | 0.6323 (4) | 0.112 (3) | 0.50 |
O5' | 0.1823 (10) | 0.3657 (12) | 0.6995 (4) | 0.100 (3) | 0.50 |
O6' | 0.2166 (12) | 0.5728 (10) | 0.6491 (4) | 0.112 (3) | 0.50 |
N1 | 1.0204 (3) | 0.7784 (4) | 0.50161 (13) | 0.0710 (11) | |
N2 | 0.71486 (19) | 0.3916 (4) | 0.65368 (12) | 0.0489 (8) | |
H2 | 0.6951 | 0.4882 | 0.6471 | 0.059* | |
N3 | 0.2410 (3) | 0.4541 (4) | 0.67600 (15) | 0.0986 (15) | |
C1 | 0.8597 (2) | 0.4671 (4) | 0.60108 (14) | 0.0462 (9) | |
C2 | 0.9620 (3) | 0.4820 (5) | 0.60666 (15) | 0.0518 (10) | |
H2A | 0.9955 | 0.4218 | 0.6323 | 0.062* | |
C3 | 1.0139 (3) | 0.5855 (5) | 0.57437 (15) | 0.0524 (10) | |
H3 | 1.0821 | 0.5976 | 0.5784 | 0.063* | |
C4 | 0.9630 (3) | 0.6702 (4) | 0.53628 (14) | 0.0525 (10) | |
C5 | 0.8623 (3) | 0.6587 (5) | 0.52915 (15) | 0.0576 (11) | |
H5 | 0.8299 | 0.7174 | 0.5027 | 0.069* | |
C6 | 0.8110 (3) | 0.5574 (5) | 0.56230 (15) | 0.0546 (10) | |
H6 | 0.7425 | 0.5492 | 0.5587 | 0.066* | |
C7 | 0.8080 (3) | 0.3493 (4) | 0.63559 (15) | 0.0468 (9) | |
C8 | 0.6499 (3) | 0.2939 (5) | 0.68146 (14) | 0.0475 (9) | |
C9 | 0.5444 (2) | 0.3483 (4) | 0.68244 (14) | 0.0458 (9) | |
C10 | 0.4802 (3) | 0.2851 (5) | 0.72057 (15) | 0.0578 (11) | |
H10 | 0.5048 | 0.2180 | 0.7471 | 0.069* | |
C11 | 0.3815 (3) | 0.3200 (6) | 0.71968 (17) | 0.0691 (13) | |
H11 | 0.3385 | 0.2783 | 0.7454 | 0.083* | |
C12 | 0.3472 (3) | 0.4188 (5) | 0.67959 (17) | 0.0628 (11) | |
C13 | 0.4080 (3) | 0.4851 (5) | 0.64193 (17) | 0.0628 (11) | |
H13 | 0.3828 | 0.5532 | 0.6158 | 0.075* | |
C14 | 0.5079 (3) | 0.4492 (5) | 0.64323 (15) | 0.0532 (10) | |
H14 | 0.5507 | 0.4929 | 0.6177 | 0.064* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.125 (3) | 0.080 (8) | 0.071 (6) | −0.005 (6) | 0.007 (5) | 0.026 (5) |
O2 | 0.083 (2) | 0.087 (9) | 0.093 (8) | −0.014 (2) | 0.032 (3) | 0.006 (5) |
O1' | 0.125 (3) | 0.080 (8) | 0.071 (6) | −0.005 (6) | 0.007 (5) | 0.026 (5) |
O2' | 0.083 (2) | 0.087 (9) | 0.093 (8) | −0.014 (2) | 0.032 (3) | 0.006 (5) |
O3 | 0.0501 (15) | 0.0421 (17) | 0.092 (2) | 0.0075 (12) | 0.0066 (14) | 0.0080 (14) |
O4 | 0.0601 (17) | 0.0487 (17) | 0.0699 (17) | 0.0045 (13) | 0.0018 (13) | 0.0090 (14) |
O5 | 0.059 (2) | 0.131 (8) | 0.109 (6) | 0.003 (5) | 0.022 (4) | 0.021 (5) |
O6 | 0.066 (3) | 0.164 (7) | 0.105 (5) | 0.017 (6) | −0.015 (4) | 0.031 (5) |
O5' | 0.059 (2) | 0.131 (8) | 0.109 (6) | 0.003 (5) | 0.022 (4) | 0.021 (5) |
O6' | 0.066 (3) | 0.164 (7) | 0.105 (5) | 0.017 (6) | −0.015 (4) | 0.031 (5) |
N1 | 0.088 (3) | 0.064 (3) | 0.061 (2) | −0.001 (2) | 0.018 (2) | 0.007 (2) |
N2 | 0.0411 (16) | 0.0393 (18) | 0.066 (2) | 0.0004 (14) | 0.0043 (14) | 0.0044 (15) |
N3 | 0.054 (2) | 0.150 (4) | 0.091 (3) | 0.011 (3) | 0.005 (2) | 0.040 (3) |
C1 | 0.045 (2) | 0.043 (2) | 0.051 (2) | 0.0012 (16) | 0.0009 (16) | −0.0034 (17) |
C2 | 0.047 (2) | 0.055 (2) | 0.053 (2) | 0.0058 (18) | −0.0012 (17) | 0.0064 (19) |
C3 | 0.047 (2) | 0.055 (2) | 0.055 (2) | −0.0038 (18) | 0.0067 (18) | −0.0019 (19) |
C4 | 0.063 (3) | 0.049 (2) | 0.045 (2) | −0.0002 (19) | 0.0097 (18) | 0.0019 (18) |
C5 | 0.065 (3) | 0.060 (3) | 0.048 (2) | 0.013 (2) | −0.0016 (19) | 0.0076 (19) |
C6 | 0.048 (2) | 0.059 (3) | 0.057 (2) | 0.0057 (19) | −0.0044 (18) | 0.001 (2) |
C7 | 0.042 (2) | 0.038 (2) | 0.060 (2) | 0.0013 (17) | −0.0050 (17) | −0.0045 (18) |
C8 | 0.049 (2) | 0.044 (2) | 0.050 (2) | −0.0030 (18) | −0.0013 (17) | 0.0001 (18) |
C9 | 0.044 (2) | 0.042 (2) | 0.051 (2) | −0.0036 (17) | −0.0047 (17) | −0.0007 (17) |
C10 | 0.054 (2) | 0.069 (3) | 0.051 (2) | 0.0032 (19) | 0.0006 (18) | 0.014 (2) |
C11 | 0.054 (2) | 0.094 (4) | 0.059 (3) | 0.001 (2) | 0.008 (2) | 0.016 (2) |
C12 | 0.037 (2) | 0.087 (3) | 0.064 (3) | 0.000 (2) | 0.0038 (19) | 0.012 (2) |
C13 | 0.052 (2) | 0.073 (3) | 0.063 (3) | 0.003 (2) | −0.009 (2) | 0.015 (2) |
C14 | 0.046 (2) | 0.056 (2) | 0.058 (2) | −0.0063 (18) | 0.0020 (18) | 0.0086 (19) |
O1—N1 | 1.228 (7) | C2—H2A | 0.9300 |
O2—N1 | 1.221 (7) | C3—C4 | 1.367 (5) |
O1'—N1 | 1.228 (7) | C3—H3 | 0.9300 |
O2'—N1 | 1.222 (7) | C4—C5 | 1.372 (5) |
O3—C7 | 1.214 (4) | C5—C6 | 1.374 (5) |
O4—C8 | 1.209 (4) | C5—H5 | 0.9300 |
O5—N3 | 1.235 (7) | C6—H6 | 0.9300 |
O6—N3 | 1.237 (7) | C8—C9 | 1.496 (5) |
O5'—N3 | 1.236 (7) | C9—C14 | 1.383 (5) |
O6'—N3 | 1.254 (7) | C9—C10 | 1.385 (5) |
N1—C4 | 1.475 (5) | C10—C11 | 1.363 (5) |
N2—C7 | 1.380 (4) | C10—H10 | 0.9300 |
N2—C8 | 1.388 (4) | C11—C12 | 1.377 (6) |
N2—H2 | 0.8800 | C11—H11 | 0.9300 |
N3—C12 | 1.466 (5) | C12—C13 | 1.360 (6) |
C1—C2 | 1.391 (5) | C13—C14 | 1.381 (5) |
C1—C6 | 1.391 (5) | C13—H13 | 0.9300 |
C1—C7 | 1.488 (5) | C14—H14 | 0.9300 |
C2—C3 | 1.378 (5) | ||
O2—N1—O1 | 123 (3) | C4—C5—H5 | 121.1 |
O2'—N1—O1' | 126 (3) | C6—C5—H5 | 121.1 |
O2—N1—C4 | 118.4 (19) | C5—C6—C1 | 121.2 (4) |
O2'—N1—C4 | 118.9 (19) | C5—C6—H6 | 119.4 |
O1—N1—C4 | 118 (2) | C1—C6—H6 | 119.4 |
O1'—N1—C4 | 115 (2) | O3—C7—N2 | 123.7 (3) |
C7—N2—C8 | 125.2 (3) | O3—C7—C1 | 120.5 (3) |
C7—N2—H2 | 117.4 | N2—C7—C1 | 115.7 (3) |
C8—N2—H2 | 117.4 | O4—C8—N2 | 123.4 (3) |
O5—N3—O6 | 122.7 (12) | O4—C8—C9 | 121.6 (3) |
O5—N3—O6' | 112.7 (10) | N2—C8—C9 | 115.0 (3) |
O5'—N3—O6' | 124.8 (12) | C14—C9—C10 | 119.5 (3) |
O5—N3—C12 | 119.4 (8) | C14—C9—C8 | 121.2 (3) |
O6—N3—C12 | 117.9 (9) | C10—C9—C8 | 119.0 (3) |
O5'—N3—C12 | 118.2 (8) | C11—C10—C9 | 120.9 (4) |
O6'—N3—C12 | 117.0 (9) | C11—C10—H10 | 119.5 |
C2—C1—C6 | 119.0 (3) | C9—C10—H10 | 119.5 |
C2—C1—C7 | 118.0 (3) | C10—C11—C12 | 118.2 (4) |
C6—C1—C7 | 123.0 (3) | C10—C11—H11 | 120.9 |
C3—C2—C1 | 120.3 (3) | C12—C11—H11 | 120.9 |
C3—C2—H2A | 119.9 | C13—C12—C11 | 122.7 (4) |
C1—C2—H2A | 119.9 | C13—C12—N3 | 117.5 (4) |
C4—C3—C2 | 118.6 (4) | C11—C12—N3 | 119.8 (3) |
C4—C3—H3 | 120.7 | C12—C13—C14 | 118.6 (4) |
C2—C3—H3 | 120.7 | C12—C13—H13 | 120.7 |
C3—C4—C5 | 123.1 (3) | C14—C13—H13 | 120.7 |
C3—C4—N1 | 117.7 (4) | C13—C14—C9 | 120.0 (3) |
C5—C4—N1 | 119.3 (3) | C13—C14—H14 | 120.0 |
C4—C5—C6 | 117.8 (3) | C9—C14—H14 | 120.0 |
C6—C1—C2—C3 | 0.4 (5) | C7—N2—C8—O4 | 14.3 (6) |
C7—C1—C2—C3 | 177.8 (3) | C7—N2—C8—C9 | −162.8 (3) |
C1—C2—C3—C4 | −1.3 (6) | O4—C8—C9—C14 | −153.9 (4) |
C2—C3—C4—C5 | 1.0 (6) | N2—C8—C9—C14 | 23.3 (5) |
C2—C3—C4—N1 | −179.0 (3) | O4—C8—C9—C10 | 20.4 (5) |
O2—N1—C4—C3 | 8.3 (14) | N2—C8—C9—C10 | −162.4 (3) |
O2'—N1—C4—C3 | −9.7 (14) | C14—C9—C10—C11 | 0.6 (6) |
O1—N1—C4—C3 | −171.8 (14) | C8—C9—C10—C11 | −173.8 (4) |
O1'—N1—C4—C3 | 170.3 (14) | C9—C10—C11—C12 | 0.5 (6) |
O2—N1—C4—C5 | −171.7 (14) | C10—C11—C12—C13 | −1.5 (7) |
O2'—N1—C4—C5 | 170.3 (14) | C10—C11—C12—N3 | 177.6 (4) |
O1—N1—C4—C5 | 8.2 (14) | O5—N3—C12—C13 | −160.6 (6) |
O1'—N1—C4—C5 | −9.7 (14) | O6—N3—C12—C13 | 19.3 (6) |
C3—C4—C5—C6 | 0.3 (6) | O5'—N3—C12—C13 | 161.1 (6) |
N1—C4—C5—C6 | −179.7 (3) | O6'—N3—C12—C13 | −18.9 (6) |
C4—C5—C6—C1 | −1.3 (6) | O5—N3—C12—C11 | 20.2 (6) |
C2—C1—C6—C5 | 1.0 (6) | O6—N3—C12—C11 | −159.9 (6) |
C7—C1—C6—C5 | −176.3 (3) | O5'—N3—C12—C11 | −18.1 (6) |
C8—N2—C7—O3 | −4.9 (6) | O6'—N3—C12—C11 | 161.9 (6) |
C8—N2—C7—C1 | 173.0 (3) | C11—C12—C13—C14 | 1.4 (7) |
C2—C1—C7—O3 | −38.2 (5) | N3—C12—C13—C14 | −177.7 (4) |
C6—C1—C7—O3 | 139.1 (4) | C12—C13—C14—C9 | −0.3 (6) |
C2—C1—C7—N2 | 143.8 (3) | C10—C9—C14—C13 | −0.7 (6) |
C6—C1—C7—N2 | −38.9 (5) | C8—C9—C14—C13 | 173.5 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O3i | 0.88 | 2.08 | 2.951 (4) | 170 |
Symmetry code: (i) −x+3/2, y+1/2, z. |
Experimental details
Crystal data | |
Chemical formula | C14H9N3O6 |
Mr | 315.24 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 295 |
a, b, c (Å) | 13.4757 (7), 8.5170 (6), 24.6285 (17) |
V (Å3) | 2826.7 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.30 × 0.15 × 0.05 |
Data collection | |
Diffractometer | Agilent Technologies SuperNova Dual diffractometer with an Atlas detector |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2010) |
Tmin, Tmax | 0.965, 0.994 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13745, 2487, 1433 |
Rint | 0.067 |
(sin θ/λ)max (Å−1) | 0.596 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.065, 0.217, 1.02 |
No. of reflections | 2487 |
No. of parameters | 221 |
No. of restraints | 40 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.38, −0.31 |
Computer programs: CrysAlis PRO (Agilent, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006), publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2···O3i | 0.88 | 2.08 | 2.951 (4) | 170 |
Symmetry code: (i) −x+3/2, y+1/2, z. |
Footnotes
‡Additional correspondence author, e-mail: sohail262001@yahoo.com.
Acknowledgements
The authors are grateful to Allama Iqbal Open University, Islamabad, Pakistan, for the allocation of research and analytical laboratory facilities. The authors also thank the University of Malaya for supporting this study.
References
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High-temperature polymers have received much attention owing to interest in the replacement of ceramics and metals (Ataei et al., 2005). However, in many cases they are insoluble and do not melt below their decomposition temperature, a feature that restricts their applications (Im & Jung, 2000). Many studies have therefore focused upon obtaining aromatic polymers that are processable by conventional techniques (Yang et al., 2002). The title compound, (I), is a logical precursor for an attempt to synthesize polyamides and polyimides having excellent thermal and mechanical properties.
Small twists are evident in the central acetylacetamide moiety as seen in the values of the C8—N2—C7—O3 and C7—N2—C8—O4 torsion angles of -4.9 (6) and 14.3 (6) °, respectively. Despite this, the r.m.s. of the fitted atoms from their least-squares plane = 0.0438 Å with the major deviations of 0.0473 (16) and -0.0708 (23) Å being for the O4 and C8 atoms, respectively. The C1- and C9-benzene rings form dihedral angles of 37.17 (15) and 28.58 (19) ° with the central plane, respectively, and form a dihedral angle of 17.8 (2) ° with each other. As the benzene rings lie to the same side of the central plane, overall, the molecule of (I) is curved, Fig. 1. The carbonyl groups are syn and the amino-H atom is directed towards the other side of the molecule, i.e. anti to the carbonyls. This arrangmement allows for the formation of N—H···O hydorgen bonds leading to a highly twisted chain, Fig. 2 and Table 1. Globally, molecules pack into undulating layers as shown in Fig. 3.