organic compounds
4-((E)-{2-[N-(1,5-Dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)carboximidoyl]benzylidene}amino)-1,5-dimethyl-2-phenyl-2,3-dihydro-1H-pyrazol-3-one
aNelson Mandela Metropolitan University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031, South Africa
*Correspondence e-mail: richard.betz@webmail.co.za
The title compound, C30H28N6O2, is a symmetric diimine derived from ortho-dibenzaldehyde. Both C=N bonds are (E)-configured. The terminal N-bonded phenyl groups adopt staggered conformations relative to their respective parent heterocycles, the relevant least-squares planes intersect at angles of 32.35 (11) and 38.59 (10)°. In the crystal, C—H⋯O contacts connect the molecules into chains along the b axis and give rise to a C11(14)C11(14) and a R22(12) pattern on different levels of graph-set analysis. The shortest intercentroid distance between two centroids was found at 4.2074 (11) Å between the two five-membered heterocycles.
Related literature
For the et al. (2011). For graph-set analysis of hydrogen bonds, see: Etter et al. (1990); Bernstein et al. (1995). For details on puckering analysis, see: Cremer & Pople (1975). For general information about the chelate effect, see: Gade (1998).
of another diimine capable of acting as a chelate ligand, see: YumataExperimental
Crystal data
|
Data collection
|
Refinement
|
Data collection: APEX2 (Bruker, 2010); cell SAINT (Bruker, 2010); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Farrugia, 1997) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536811039158/bh2383sup1.cif
contains datablocks I, global. DOI:Supporting information file. DOI: https://doi.org/10.1107/S1600536811039158/bh2383Isup2.cdx
Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811039158/bh2383Isup3.hkl
A solution of 0.99 g of phthalaldehyde in 20 cm3 of methanol was added dropwise to a stirred solution of 3.00 g of 4-aminoantipyrine in 30 cm3 of methanol. The solution was refluxed under nitrogen for 15 minutes. Upon cooling, a yellow precipitate formed which was filtered and dried under reduced pressure. The product was recrystallized from methanol to produce yellow crystals.
Aromatic carbon-bound H atoms were placed in calculated positions (C—H 0.95 Å) and were included in the
in the riding model approximation, with U(H) set to 1.2Ueq(C). The H atoms of the methyl groups (C—H 0.98 Å) were allowed to rotate with a fixed angle around the C—C bond to best fit the experimental electron density [HFIX 137 in the SHELX program suite (Sheldrick, 2008)], with U(H) set to 1.5Ueq(C).Chelate ligands have found widespread use in coordination chemistry due to the enhanced thermodynamic stability of resultant coordination compounds in relation to metal complexes exclusively applying comparable monodentate ligands (Gade, 1998). In our continuous efforts in elucidating the rules guiding the formation of coordination compounds applying nitrogen-containing chelate ligands, we determined the structure of the title compound to allow for comparative studies in envisioned coordination compounds. Structural information about another diimine capable of acting as a chelate ligand is apparent in the literature (Yumata et al., 2011).
Both C=N double bonds are (E)-configured. The least-squares planes defined by the five-membered heterocycles on the one hand and the central phenyl moiety on the other hand enclose angles of 3.16 (10) and 4.47 (10)°, respectively. The nitrogen-bonded phenyl moieties adopt staggered conformations relative to their respective parent heterocycles, the relevant least-squares planes intersect at angles of 32.35 (11) and 38.59 (10)°. A conformation analysis of the five-membered heterocycles (Cremer & Pople, 1975) is invariably precluded by the small puckering amplitude (Fig. 1).
In the crystal, C–H···O contacts whose range falls by more than 0.1 Å below the sum of van-der-Waals radii are present. These are observed between H atoms of the methyl groups and the ketonic O atoms. In terms of graph-set analysis (Etter et al., 1990; Bernstein et al., 1995), the descriptor for these interactions is C11(14)C11(14) on the unitary level and emphasizes the presence of two antidromic chains whereas a R22(12) descriptor on the binary level highlights the existence of cyclic patterns. In total, the molecules are connected to infinite chains along the crystallographic b axis. The shortest intercentroid distance between two centers of gravity was found at 4.2074 (11) Å (Fig. 2).
The packing of the title compound in the crystal is shown in Figure 3.
For the
of another diimine capable of acting as a chelate ligand, see: Yumata et al. (2011). For graph-set analysis of hydrogen bonds, see: Etter et al. (1990); Bernstein et al. (1995). For details on puckering analysis, see: Cremer & Pople (1975). For general information about the chelate effect, see: Gade (1998).Data collection: APEX2 (Bruker, 2010); cell
SAINT (Bruker, 2010); data reduction: SAINT (Bruker, 2010); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Farrugia, 1997) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).C30H28N6O2 | F(000) = 532 |
Mr = 504.58 | Dx = 1.321 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 5101 reflections |
a = 12.6048 (2) Å | θ = 2.6–28.2° |
b = 7.3389 (2) Å | µ = 0.09 mm−1 |
c = 14.3877 (3) Å | T = 200 K |
β = 107.622 (1)° | Rod, yellow |
V = 1268.48 (5) Å3 | 0.33 × 0.15 × 0.08 mm |
Z = 2 |
Bruker APEXII CCD diffractometer | 2806 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.032 |
Graphite monochromator | θmax = 28.3°, θmin = 2.6° |
φ and ω scans | h = −16→16 |
12317 measured reflections | k = −9→9 |
3399 independent reflections | l = −19→18 |
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)] = 0.036 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.0471P)2] where P = (Fo2 + 2Fc2)/3 |
3399 reflections | (Δ/σ)max < 0.001 |
347 parameters | Δρmax = 0.15 e Å−3 |
1 restraint | Δρmin = −0.18 e Å−3 |
0 constraints |
C30H28N6O2 | V = 1268.48 (5) Å3 |
Mr = 504.58 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 12.6048 (2) Å | µ = 0.09 mm−1 |
b = 7.3389 (2) Å | T = 200 K |
c = 14.3877 (3) Å | 0.33 × 0.15 × 0.08 mm |
β = 107.622 (1)° |
Bruker APEXII CCD diffractometer | 2806 reflections with I > 2σ(I) |
12317 measured reflections | Rint = 0.032 |
3399 independent reflections |
R[F2 > 2σ(F2)] = 0.036 | 1 restraint |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.15 e Å−3 |
3399 reflections | Δρmin = −0.18 e Å−3 |
347 parameters |
Refinement. Due to the absence of a strong anomalous scatterer, the Flack parameter is meaningless. Thus, Friedel opposites (2450 pairs) have been merged and the item was removed from the CIF. |
x | y | z | Uiso*/Ueq | ||
O1 | 0.22361 (12) | −0.1543 (2) | 0.36994 (11) | 0.0389 (3) | |
O2 | 0.08533 (11) | 0.2814 (2) | 0.22952 (10) | 0.0368 (3) | |
N1 | 0.43019 (13) | −0.2449 (2) | 0.30112 (11) | 0.0319 (4) | |
N2 | 0.24983 (12) | 0.3960 (2) | 0.11404 (11) | 0.0307 (4) | |
N3 | 0.26332 (13) | −0.4405 (2) | 0.44041 (11) | 0.0313 (4) | |
N4 | 0.34923 (13) | −0.5696 (2) | 0.45284 (12) | 0.0329 (4) | |
N5 | 0.01135 (12) | 0.5670 (2) | 0.17718 (11) | 0.0290 (3) | |
N6 | 0.02704 (13) | 0.7000 (2) | 0.11152 (11) | 0.0307 (4) | |
C1 | 0.38269 (15) | −0.1028 (3) | 0.25442 (13) | 0.0300 (4) | |
H1 | 0.3122 | −0.0659 | 0.2590 | 0.036* | |
C2 | 0.28998 (15) | 0.2528 (3) | 0.16189 (13) | 0.0287 (4) | |
H2 | 0.2550 | 0.2004 | 0.2054 | 0.034* | |
C11 | 0.43573 (14) | 0.0033 (3) | 0.19412 (12) | 0.0271 (4) | |
C12 | 0.39117 (14) | 0.1687 (3) | 0.14939 (12) | 0.0268 (4) | |
C13 | 0.44707 (14) | 0.2614 (3) | 0.09350 (13) | 0.0320 (4) | |
H13 | 0.4179 | 0.3738 | 0.0638 | 0.038* | |
C14 | 0.54326 (16) | 0.1942 (3) | 0.08029 (14) | 0.0362 (5) | |
H14 | 0.5793 | 0.2586 | 0.0411 | 0.043* | |
C15 | 0.58734 (15) | 0.0316 (3) | 0.12471 (14) | 0.0353 (5) | |
H15 | 0.6542 | −0.0152 | 0.1165 | 0.042* | |
C16 | 0.53411 (15) | −0.0616 (3) | 0.18057 (13) | 0.0331 (5) | |
H16 | 0.5650 | −0.1728 | 0.2106 | 0.040* | |
C21 | 0.19608 (15) | −0.4426 (3) | 0.50392 (12) | 0.0291 (4) | |
C22 | 0.23326 (16) | −0.5253 (3) | 0.59461 (13) | 0.0366 (5) | |
H22 | 0.3059 | −0.5760 | 0.6168 | 0.044* | |
C23 | 0.16325 (18) | −0.5334 (3) | 0.65265 (14) | 0.0410 (5) | |
H23 | 0.1877 | −0.5922 | 0.7143 | 0.049* | |
C24 | 0.05832 (18) | −0.4567 (3) | 0.62151 (15) | 0.0404 (5) | |
H24 | 0.0104 | −0.4637 | 0.6612 | 0.048* | |
C25 | 0.02366 (17) | −0.3697 (3) | 0.53213 (14) | 0.0387 (5) | |
H25 | −0.0478 | −0.3143 | 0.5112 | 0.046* | |
C26 | 0.09157 (15) | −0.3625 (3) | 0.47301 (14) | 0.0331 (4) | |
H26 | 0.0670 | −0.3030 | 0.4115 | 0.040* | |
C31 | −0.09471 (14) | 0.5517 (3) | 0.19288 (12) | 0.0266 (4) | |
C32 | −0.19051 (15) | 0.6147 (3) | 0.12384 (13) | 0.0308 (4) | |
H32 | −0.1866 | 0.6711 | 0.0655 | 0.037* | |
C33 | −0.29113 (15) | 0.5939 (3) | 0.14162 (15) | 0.0371 (5) | |
H33 | −0.3572 | 0.6365 | 0.0950 | 0.044* | |
C34 | −0.29758 (16) | 0.5124 (3) | 0.22569 (16) | 0.0398 (5) | |
H34 | −0.3677 | 0.4997 | 0.2369 | 0.048* | |
C35 | −0.20286 (16) | 0.4491 (3) | 0.29363 (15) | 0.0389 (5) | |
H35 | −0.2074 | 0.3923 | 0.3516 | 0.047* | |
C36 | −0.10063 (15) | 0.4686 (3) | 0.27696 (13) | 0.0315 (4) | |
H36 | −0.0349 | 0.4248 | 0.3235 | 0.038* | |
C41 | 0.27970 (16) | −0.2948 (3) | 0.38473 (13) | 0.0308 (4) | |
C42 | 0.37715 (15) | −0.3447 (3) | 0.35641 (13) | 0.0300 (4) | |
C43 | 0.41402 (15) | −0.5094 (3) | 0.39719 (13) | 0.0312 (4) | |
C44 | 0.51017 (17) | −0.6187 (3) | 0.38933 (15) | 0.0396 (5) | |
H44A | 0.4831 | −0.7214 | 0.3449 | 0.059* | |
H44B | 0.5521 | −0.6650 | 0.4539 | 0.059* | |
H44C | 0.5587 | −0.5419 | 0.3640 | 0.059* | |
C45 | 0.31200 (19) | −0.7619 (3) | 0.44471 (16) | 0.0425 (5) | |
H45A | 0.2540 | −0.7801 | 0.3823 | 0.064* | |
H45B | 0.2821 | −0.7909 | 0.4984 | 0.064* | |
H45C | 0.3753 | −0.8419 | 0.4480 | 0.064* | |
C51 | 0.08748 (14) | 0.4251 (3) | 0.18620 (13) | 0.0275 (4) | |
C52 | 0.15879 (14) | 0.4847 (3) | 0.12943 (12) | 0.0271 (4) | |
C53 | 0.12091 (14) | 0.6489 (3) | 0.08866 (13) | 0.0293 (4) | |
C54 | 0.16732 (17) | 0.7650 (3) | 0.02611 (16) | 0.0416 (5) | |
H54A | 0.1097 | 0.7886 | −0.0358 | 0.062* | |
H54B | 0.2302 | 0.7024 | 0.0135 | 0.062* | |
H54C | 0.1927 | 0.8808 | 0.0593 | 0.062* | |
C55 | 0.01693 (18) | 0.8901 (3) | 0.14159 (16) | 0.0388 (5) | |
H55A | 0.0748 | 0.9148 | 0.2033 | 0.058* | |
H55B | −0.0566 | 0.9082 | 0.1502 | 0.058* | |
H55C | 0.0259 | 0.9734 | 0.0913 | 0.058* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0467 (8) | 0.0251 (8) | 0.0483 (8) | 0.0089 (6) | 0.0195 (7) | 0.0109 (7) |
O2 | 0.0414 (7) | 0.0240 (7) | 0.0490 (8) | 0.0088 (6) | 0.0198 (6) | 0.0133 (7) |
N1 | 0.0374 (8) | 0.0270 (9) | 0.0305 (8) | 0.0042 (7) | 0.0091 (7) | 0.0037 (7) |
N2 | 0.0318 (8) | 0.0291 (9) | 0.0310 (8) | 0.0045 (7) | 0.0092 (6) | 0.0042 (7) |
N3 | 0.0403 (8) | 0.0223 (8) | 0.0312 (8) | 0.0030 (7) | 0.0107 (7) | 0.0050 (7) |
N4 | 0.0438 (9) | 0.0217 (9) | 0.0321 (8) | 0.0054 (7) | 0.0100 (7) | 0.0052 (7) |
N5 | 0.0335 (8) | 0.0206 (8) | 0.0336 (8) | 0.0058 (7) | 0.0114 (6) | 0.0068 (7) |
N6 | 0.0366 (8) | 0.0204 (8) | 0.0344 (8) | 0.0042 (7) | 0.0099 (7) | 0.0059 (7) |
C1 | 0.0315 (9) | 0.0276 (11) | 0.0315 (9) | 0.0026 (8) | 0.0105 (8) | 0.0007 (9) |
C2 | 0.0312 (9) | 0.0277 (10) | 0.0281 (9) | 0.0025 (8) | 0.0104 (7) | 0.0032 (8) |
C11 | 0.0296 (8) | 0.0264 (10) | 0.0245 (8) | 0.0011 (8) | 0.0070 (7) | −0.0017 (8) |
C12 | 0.0282 (8) | 0.0273 (10) | 0.0239 (8) | 0.0002 (8) | 0.0066 (7) | −0.0012 (8) |
C13 | 0.0335 (9) | 0.0291 (10) | 0.0332 (10) | −0.0002 (8) | 0.0098 (8) | 0.0048 (9) |
C14 | 0.0336 (10) | 0.0413 (12) | 0.0359 (10) | −0.0052 (9) | 0.0139 (8) | 0.0003 (10) |
C15 | 0.0284 (9) | 0.0426 (13) | 0.0364 (10) | 0.0035 (9) | 0.0122 (8) | −0.0048 (10) |
C16 | 0.0323 (9) | 0.0329 (12) | 0.0336 (10) | 0.0062 (9) | 0.0091 (8) | −0.0001 (9) |
C21 | 0.0390 (9) | 0.0216 (9) | 0.0264 (9) | −0.0042 (8) | 0.0096 (7) | −0.0013 (8) |
C22 | 0.0444 (10) | 0.0319 (11) | 0.0301 (9) | −0.0030 (10) | 0.0063 (8) | 0.0033 (9) |
C23 | 0.0595 (12) | 0.0352 (12) | 0.0276 (9) | −0.0059 (11) | 0.0123 (9) | 0.0027 (9) |
C24 | 0.0546 (12) | 0.0329 (12) | 0.0384 (11) | −0.0105 (10) | 0.0214 (9) | −0.0036 (10) |
C25 | 0.0432 (11) | 0.0308 (11) | 0.0433 (11) | −0.0034 (10) | 0.0150 (9) | −0.0026 (10) |
C26 | 0.0415 (10) | 0.0262 (10) | 0.0297 (9) | −0.0016 (9) | 0.0078 (8) | 0.0022 (8) |
C31 | 0.0299 (8) | 0.0205 (9) | 0.0293 (9) | 0.0045 (8) | 0.0087 (7) | −0.0040 (8) |
C32 | 0.0386 (10) | 0.0265 (10) | 0.0260 (9) | 0.0090 (9) | 0.0081 (8) | −0.0019 (8) |
C33 | 0.0336 (9) | 0.0340 (12) | 0.0395 (10) | 0.0091 (9) | 0.0049 (8) | −0.0032 (9) |
C34 | 0.0349 (10) | 0.0364 (12) | 0.0521 (12) | 0.0032 (9) | 0.0191 (9) | −0.0012 (10) |
C35 | 0.0481 (11) | 0.0319 (11) | 0.0404 (11) | 0.0060 (10) | 0.0189 (9) | 0.0049 (10) |
C36 | 0.0360 (9) | 0.0258 (10) | 0.0310 (9) | 0.0048 (8) | 0.0076 (8) | 0.0023 (8) |
C41 | 0.0381 (10) | 0.0243 (10) | 0.0278 (9) | −0.0006 (8) | 0.0063 (8) | 0.0004 (8) |
C42 | 0.0351 (9) | 0.0259 (10) | 0.0265 (9) | 0.0018 (8) | 0.0059 (8) | 0.0015 (8) |
C43 | 0.0385 (10) | 0.0273 (10) | 0.0247 (8) | 0.0030 (9) | 0.0049 (8) | −0.0009 (8) |
C44 | 0.0460 (11) | 0.0332 (12) | 0.0383 (11) | 0.0103 (10) | 0.0105 (9) | 0.0043 (9) |
C45 | 0.0575 (13) | 0.0220 (11) | 0.0477 (12) | 0.0051 (10) | 0.0155 (10) | 0.0060 (10) |
C51 | 0.0307 (9) | 0.0218 (10) | 0.0282 (9) | 0.0032 (8) | 0.0061 (7) | 0.0010 (8) |
C52 | 0.0297 (8) | 0.0235 (9) | 0.0263 (8) | 0.0027 (8) | 0.0059 (7) | 0.0018 (8) |
C53 | 0.0312 (9) | 0.0264 (10) | 0.0288 (9) | 0.0011 (8) | 0.0071 (7) | 0.0021 (9) |
C54 | 0.0453 (11) | 0.0335 (12) | 0.0472 (12) | 0.0035 (10) | 0.0158 (10) | 0.0145 (11) |
C55 | 0.0514 (12) | 0.0197 (10) | 0.0451 (12) | 0.0061 (9) | 0.0142 (10) | 0.0041 (9) |
O1—C41 | 1.232 (2) | C23—H23 | 0.9500 |
O2—C51 | 1.229 (2) | C24—C25 | 1.383 (3) |
N1—C1 | 1.286 (3) | C24—H24 | 0.9500 |
N1—C42 | 1.392 (2) | C25—C26 | 1.378 (3) |
N2—C2 | 1.274 (2) | C25—H25 | 0.9500 |
N2—C52 | 1.394 (2) | C26—H26 | 0.9500 |
N3—C41 | 1.389 (2) | C31—C36 | 1.377 (3) |
N3—N4 | 1.409 (2) | C31—C32 | 1.390 (2) |
N3—C21 | 1.422 (2) | C32—C33 | 1.376 (3) |
N4—C43 | 1.378 (2) | C32—H32 | 0.9500 |
N4—C45 | 1.481 (3) | C33—C34 | 1.374 (3) |
N5—C51 | 1.395 (2) | C33—H33 | 0.9500 |
N5—N6 | 1.413 (2) | C34—C35 | 1.375 (3) |
N5—C31 | 1.426 (2) | C34—H34 | 0.9500 |
N6—C53 | 1.373 (2) | C35—C36 | 1.388 (3) |
N6—C55 | 1.478 (3) | C35—H35 | 0.9500 |
C1—C11 | 1.469 (3) | C36—H36 | 0.9500 |
C1—H1 | 0.9500 | C41—C42 | 1.453 (3) |
C2—C12 | 1.476 (3) | C42—C43 | 1.362 (3) |
C2—H2 | 0.9500 | C43—C44 | 1.486 (3) |
C11—C16 | 1.396 (2) | C44—H44A | 0.9800 |
C11—C12 | 1.408 (3) | C44—H44B | 0.9800 |
C12—C13 | 1.396 (3) | C44—H44C | 0.9800 |
C13—C14 | 1.374 (3) | C45—H45A | 0.9800 |
C13—H13 | 0.9500 | C45—H45B | 0.9800 |
C14—C15 | 1.388 (3) | C45—H45C | 0.9800 |
C14—H14 | 0.9500 | C51—C52 | 1.453 (3) |
C15—C16 | 1.375 (3) | C52—C53 | 1.362 (3) |
C15—H15 | 0.9500 | C53—C54 | 1.482 (3) |
C16—H16 | 0.9500 | C54—H54A | 0.9800 |
C21—C22 | 1.386 (3) | C54—H54B | 0.9800 |
C21—C26 | 1.387 (3) | C54—H54C | 0.9800 |
C22—C23 | 1.388 (3) | C55—H55A | 0.9800 |
C22—H22 | 0.9500 | C55—H55B | 0.9800 |
C23—C24 | 1.381 (3) | C55—H55C | 0.9800 |
C1—N1—C42 | 119.80 (16) | C32—C31—N5 | 120.91 (16) |
C2—N2—C52 | 120.71 (16) | C33—C32—C31 | 118.70 (17) |
C41—N3—N4 | 110.38 (14) | C33—C32—H32 | 120.7 |
C41—N3—C21 | 126.90 (16) | C31—C32—H32 | 120.7 |
N4—N3—C21 | 119.75 (15) | C34—C33—C32 | 121.04 (18) |
C43—N4—N3 | 106.19 (15) | C34—C33—H33 | 119.5 |
C43—N4—C45 | 119.27 (17) | C32—C33—H33 | 119.5 |
N3—N4—C45 | 114.69 (16) | C33—C34—C35 | 120.20 (18) |
C51—N5—N6 | 110.25 (14) | C33—C34—H34 | 119.9 |
C51—N5—C31 | 125.29 (16) | C35—C34—H34 | 119.9 |
N6—N5—C31 | 119.20 (14) | C34—C35—C36 | 119.62 (19) |
C53—N6—N5 | 106.08 (14) | C34—C35—H35 | 120.2 |
C53—N6—C55 | 119.00 (17) | C36—C35—H35 | 120.2 |
N5—N6—C55 | 114.48 (15) | C31—C36—C35 | 119.86 (17) |
N1—C1—C11 | 121.03 (17) | C31—C36—H36 | 120.1 |
N1—C1—H1 | 119.5 | C35—C36—H36 | 120.1 |
C11—C1—H1 | 119.5 | O1—C41—N3 | 124.51 (18) |
N2—C2—C12 | 119.71 (17) | O1—C41—C42 | 130.71 (19) |
N2—C2—H2 | 120.1 | N3—C41—C42 | 104.68 (16) |
C12—C2—H2 | 120.1 | C43—C42—N1 | 123.54 (18) |
C16—C11—C12 | 118.59 (17) | C43—C42—C41 | 108.06 (17) |
C16—C11—C1 | 118.93 (17) | N1—C42—C41 | 128.35 (17) |
C12—C11—C1 | 122.48 (16) | C42—C43—N4 | 110.47 (17) |
C13—C12—C11 | 118.83 (17) | C42—C43—C44 | 128.76 (19) |
C13—C12—C2 | 118.15 (17) | N4—C43—C44 | 120.76 (18) |
C11—C12—C2 | 122.98 (17) | C43—C44—H44A | 109.5 |
C14—C13—C12 | 121.67 (19) | C43—C44—H44B | 109.5 |
C14—C13—H13 | 119.2 | H44A—C44—H44B | 109.5 |
C12—C13—H13 | 119.2 | C43—C44—H44C | 109.5 |
C13—C14—C15 | 119.46 (19) | H44A—C44—H44C | 109.5 |
C13—C14—H14 | 120.3 | H44B—C44—H44C | 109.5 |
C15—C14—H14 | 120.3 | N4—C45—H45A | 109.5 |
C16—C15—C14 | 119.93 (18) | N4—C45—H45B | 109.5 |
C16—C15—H15 | 120.0 | H45A—C45—H45B | 109.5 |
C14—C15—H15 | 120.0 | N4—C45—H45C | 109.5 |
C15—C16—C11 | 121.53 (19) | H45A—C45—H45C | 109.5 |
C15—C16—H16 | 119.2 | H45B—C45—H45C | 109.5 |
C11—C16—H16 | 119.2 | O2—C51—N5 | 124.56 (17) |
C22—C21—C26 | 120.34 (18) | O2—C51—C52 | 130.96 (17) |
C22—C21—N3 | 120.80 (17) | N5—C51—C52 | 104.37 (16) |
C26—C21—N3 | 118.84 (16) | C53—C52—N2 | 122.88 (17) |
C21—C22—C23 | 119.34 (19) | C53—C52—C51 | 108.21 (16) |
C21—C22—H22 | 120.3 | N2—C52—C51 | 128.89 (17) |
C23—C22—H22 | 120.3 | C52—C53—N6 | 110.71 (17) |
C24—C23—C22 | 120.54 (19) | C52—C53—C54 | 128.22 (18) |
C24—C23—H23 | 119.7 | N6—C53—C54 | 121.06 (17) |
C22—C23—H23 | 119.7 | C53—C54—H54A | 109.5 |
C23—C24—C25 | 119.46 (19) | C53—C54—H54B | 109.5 |
C23—C24—H24 | 120.3 | H54A—C54—H54B | 109.5 |
C25—C24—H24 | 120.3 | C53—C54—H54C | 109.5 |
C26—C25—C24 | 120.7 (2) | H54A—C54—H54C | 109.5 |
C26—C25—H25 | 119.6 | H54B—C54—H54C | 109.5 |
C24—C25—H25 | 119.6 | N6—C55—H55A | 109.5 |
C25—C26—C21 | 119.52 (18) | N6—C55—H55B | 109.5 |
C25—C26—H26 | 120.2 | H55A—C55—H55B | 109.5 |
C21—C26—H26 | 120.2 | N6—C55—H55C | 109.5 |
C36—C31—C32 | 120.58 (17) | H55A—C55—H55C | 109.5 |
C36—C31—N5 | 118.48 (15) | H55B—C55—H55C | 109.5 |
C41—N3—N4—C43 | −5.0 (2) | C31—C32—C33—C34 | 0.0 (3) |
C21—N3—N4—C43 | −166.77 (16) | C32—C33—C34—C35 | −0.4 (3) |
C41—N3—N4—C45 | −138.91 (17) | C33—C34—C35—C36 | 0.3 (3) |
C21—N3—N4—C45 | 59.3 (2) | C32—C31—C36—C35 | −0.6 (3) |
C51—N5—N6—C53 | −6.49 (19) | N5—C31—C36—C35 | −178.99 (19) |
C31—N5—N6—C53 | −162.23 (16) | C34—C35—C36—C31 | 0.2 (3) |
C51—N5—N6—C55 | −139.77 (17) | N4—N3—C41—O1 | −172.85 (17) |
C31—N5—N6—C55 | 64.5 (2) | C21—N3—C41—O1 | −12.7 (3) |
C42—N1—C1—C11 | −178.92 (16) | N4—N3—C41—C42 | 3.94 (19) |
C52—N2—C2—C12 | −175.70 (16) | C21—N3—C41—C42 | 164.11 (16) |
N1—C1—C11—C16 | 6.0 (3) | C1—N1—C42—C43 | 170.82 (18) |
N1—C1—C11—C12 | −173.96 (17) | C1—N1—C42—C41 | −12.0 (3) |
C16—C11—C12—C13 | −0.1 (2) | O1—C41—C42—C43 | 175.1 (2) |
C1—C11—C12—C13 | 179.78 (17) | N3—C41—C42—C43 | −1.43 (19) |
C16—C11—C12—C2 | −177.71 (17) | O1—C41—C42—N1 | −2.4 (3) |
C1—C11—C12—C2 | 2.2 (3) | N3—C41—C42—N1 | −178.94 (17) |
N2—C2—C12—C13 | 7.2 (3) | N1—C42—C43—N4 | 176.02 (17) |
N2—C2—C12—C11 | −175.19 (17) | C41—C42—C43—N4 | −1.6 (2) |
C11—C12—C13—C14 | 0.8 (3) | N1—C42—C43—C44 | −2.9 (3) |
C2—C12—C13—C14 | 178.47 (16) | C41—C42—C43—C44 | 179.46 (18) |
C12—C13—C14—C15 | −1.0 (3) | N3—N4—C43—C42 | 4.0 (2) |
C13—C14—C15—C16 | 0.6 (3) | C45—N4—C43—C42 | 135.41 (18) |
C14—C15—C16—C11 | 0.0 (3) | N3—N4—C43—C44 | −176.99 (16) |
C12—C11—C16—C15 | −0.2 (3) | C45—N4—C43—C44 | −45.6 (3) |
C1—C11—C16—C15 | 179.84 (17) | N6—N5—C51—O2 | −171.39 (17) |
C41—N3—C21—C22 | −137.5 (2) | C31—N5—C51—O2 | −17.5 (3) |
N4—N3—C21—C22 | 21.0 (3) | N6—N5—C51—C52 | 5.15 (19) |
C41—N3—C21—C26 | 43.5 (3) | C31—N5—C51—C52 | 159.09 (16) |
N4—N3—C21—C26 | −158.03 (17) | C2—N2—C52—C53 | 172.22 (17) |
C26—C21—C22—C23 | 2.5 (3) | C2—N2—C52—C51 | −9.2 (3) |
N3—C21—C22—C23 | −176.58 (19) | O2—C51—C52—C53 | 174.31 (19) |
C21—C22—C23—C24 | −1.3 (3) | N5—C51—C52—C53 | −1.92 (19) |
C22—C23—C24—C25 | −0.7 (3) | O2—C51—C52—N2 | −4.4 (3) |
C23—C24—C25—C26 | 1.5 (3) | N5—C51—C52—N2 | 179.37 (17) |
C24—C25—C26—C21 | −0.4 (3) | N2—C52—C53—N6 | 176.71 (16) |
C22—C21—C26—C25 | −1.6 (3) | C51—C52—C53—N6 | −2.1 (2) |
N3—C21—C26—C25 | 177.43 (18) | N2—C52—C53—C54 | −2.3 (3) |
C51—N5—C31—C36 | 49.2 (3) | C51—C52—C53—C54 | 178.90 (19) |
N6—N5—C31—C36 | −159.00 (17) | N5—N6—C53—C52 | 5.20 (19) |
C51—N5—C31—C32 | −129.2 (2) | C55—N6—C53—C52 | 135.95 (18) |
N6—N5—C31—C32 | 22.7 (3) | N5—N6—C53—C54 | −175.71 (17) |
C36—C31—C32—C33 | 0.5 (3) | C55—N6—C53—C54 | −45.0 (3) |
N5—C31—C32—C33 | 178.85 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
C45—H45A···O2i | 0.98 | 2.59 | 3.535 (2) | 161 |
C55—H55A···O1ii | 0.98 | 2.61 | 3.536 (3) | 158 |
Symmetry codes: (i) x, y−1, z; (ii) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C30H28N6O2 |
Mr | 504.58 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 200 |
a, b, c (Å) | 12.6048 (2), 7.3389 (2), 14.3877 (3) |
β (°) | 107.622 (1) |
V (Å3) | 1268.48 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.33 × 0.15 × 0.08 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 12317, 3399, 2806 |
Rint | 0.032 |
(sin θ/λ)max (Å−1) | 0.667 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.079, 1.01 |
No. of reflections | 3399 |
No. of parameters | 347 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.15, −0.18 |
Computer programs: APEX2 (Bruker, 2010), SAINT (Bruker, 2010), SHELXS97 (Sheldrick, 2008), ORTEPIII (Farrugia, 1997) and Mercury (Macrae et al., 2008), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C45—H45A···O2i | 0.98 | 2.59 | 3.535 (2) | 160.9 |
C55—H55A···O1ii | 0.98 | 2.61 | 3.536 (3) | 158.1 |
Symmetry codes: (i) x, y−1, z; (ii) x, y+1, z. |
Acknowledgements
The authors thank Mr John Robbins for financial and logistical support.
References
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Bruker (2010). APEX2 and SAINT Bruker AXS Inc., Madison, USA. Google Scholar
Cremer, D. & Pople, J. A. (1975). J. Am. Chem. Soc. 97, 1354–1358. CrossRef CAS Web of Science Google Scholar
Etter, M. C., MacDonald, J. C. & Bernstein, J. (1990). Acta Cryst. B46, 256–262. CrossRef CAS Web of Science IUCr Journals Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Gade, L. H. (1998). Koordinationschemie, 1. Auflage, Weinheim: Wiley–VCH. Google Scholar
Macrae, C. F., Bruno, I. J., Chisholm, J. A., Edgington, P. R., McCabe, P., Pidcock, E., Rodriguez-Monge, L., Taylor, R., van de Streek, J. & Wood, P. A. (2008). J. Appl. Cryst. 41, 466–470. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
Yumata, N., Gerber, T., Hosten, E. & Betz, R. (2011). Acta Cryst. E67, o2175. Web of Science CSD CrossRef IUCr Journals Google Scholar
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.
Chelate ligands have found widespread use in coordination chemistry due to the enhanced thermodynamic stability of resultant coordination compounds in relation to metal complexes exclusively applying comparable monodentate ligands (Gade, 1998). In our continuous efforts in elucidating the rules guiding the formation of coordination compounds applying nitrogen-containing chelate ligands, we determined the structure of the title compound to allow for comparative studies in envisioned coordination compounds. Structural information about another diimine capable of acting as a chelate ligand is apparent in the literature (Yumata et al., 2011).
Both C=N double bonds are (E)-configured. The least-squares planes defined by the five-membered heterocycles on the one hand and the central phenyl moiety on the other hand enclose angles of 3.16 (10) and 4.47 (10)°, respectively. The nitrogen-bonded phenyl moieties adopt staggered conformations relative to their respective parent heterocycles, the relevant least-squares planes intersect at angles of 32.35 (11) and 38.59 (10)°. A conformation analysis of the five-membered heterocycles (Cremer & Pople, 1975) is invariably precluded by the small puckering amplitude (Fig. 1).
In the crystal, C–H···O contacts whose range falls by more than 0.1 Å below the sum of van-der-Waals radii are present. These are observed between H atoms of the methyl groups and the ketonic O atoms. In terms of graph-set analysis (Etter et al., 1990; Bernstein et al., 1995), the descriptor for these interactions is C11(14)C11(14) on the unitary level and emphasizes the presence of two antidromic chains whereas a R22(12) descriptor on the binary level highlights the existence of cyclic patterns. In total, the molecules are connected to infinite chains along the crystallographic b axis. The shortest intercentroid distance between two centers of gravity was found at 4.2074 (11) Å (Fig. 2).
The packing of the title compound in the crystal is shown in Figure 3.