
Acta Cryst. (2010). E66, o1181-o1182 [ doi:10.1107/S1600536810014893 ]
The title compound, C24H21N2OP, was obtained by reacting 2-aminopyridine and 2-(diphenylphosphinyl)benzaldehyde in ethanol. It crystallizes with two crystallographically independent molecules in the asymmetric unit. The aminopyridine units and the benzene ring bonded to the phosphine oxide P atom form dihedral angles of 88.58 (7) and 82.47 (9)° in the two molecules. The crystal structure displays strong N-H
O and weak C-H
O hydrogen bonds along the b axis and C-H
aromatic intra- and intermolecular interactions.
A solution of 2(diphenylphosphinyl)benzaldehyde (0.345 g, 1.189 mmol) in 5 ml of ethanol was added at room temperature to a solution of 2-aminopyridine (0.111 g, 1.189 mmol) in ethanol (5 ml). The resulting mixture was refluxed until the reaction was completed (5 hours). Then, solvent was evaporated, forming a light brown solid, which was filtered and washed with hexane. Yield: 0.408 g (89.3%).
Amine H atoms H20 and H46 were found in a difference map and refined with free coordinates and Uiso(H) = 1.2Ueq(N). N—H bond lengths were restrained to a sensible target value. Other H atoms were included in calculated positions (C—H = 0.93 or 0.97 Å), and refined using a riding model, with Uiso(H) = 1.2Ueq of the carrier atom.
Data collection: SMART (Bruker, 1999); cell refinement: SMART (Bruker, 1999); data reduction: SAINT (Bruker, 1999); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
| C24H21N2OP | F(000) = 1616 |
| Mr = 384.40 | Dx = 1.236 Mg m−3 |
| Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2ybc | Cell parameters from 6035 reflections |
| a = 24.130 (3) Å | θ = 2.2–23.8° |
| b = 8.2397 (9) Å | µ = 0.15 mm−1 |
| c = 21.992 (2) Å | T = 298 K |
| β = 109.108 (2)° | Prism, colorless |
| V = 4131.5 (8) Å3 | 0.35 × 0.14 × 0.09 mm |
| Z = 8 |
| Bruker SMART APEX CCD area detector diffractometer | 7544 independent reflections |
| Radiation source: fine-focus sealed tube | 4889 reflections with I > 2σ(I) |
| graphite | Rint = 0.062 |
| Detector resolution: 0.83 pixels mm-1 | θmax = 25.4°, θmin = 1.8° |
| ω scans | h = −29→29 |
| Absorption correction: multi-scan (SADABS; Bruker, 1999) | k = −9→9 |
| Tmin = 0.950, Tmax = 0.987 | l = −26→26 |
| 32921 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)] = 0.056 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.132 | H atoms treated by a mixture of independent and constrained refinement |
| S = 1.06 | w = 1/[σ2(Fo2) + (0.0576P)2] where P = (Fo2 + 2Fc2)/3 |
| 7544 reflections | (Δ/σ)max < 0.001 |
| 514 parameters | Δρmax = 0.31 e Å−3 |
| 2 restraints | Δρmin = −0.21 e Å−3 |
| 0 constraints |
| C24H21N2OP | V = 4131.5 (8) Å3 |
| Mr = 384.40 | Z = 8 |
| Monoclinic, P21/c | Mo Kα radiation |
| a = 24.130 (3) Å | µ = 0.15 mm−1 |
| b = 8.2397 (9) Å | T = 298 K |
| c = 21.992 (2) Å | 0.35 × 0.14 × 0.09 mm |
| β = 109.108 (2)° |
| Bruker SMART APEX CCD area detector diffractometer | 7544 independent reflections |
| Absorption correction: multi-scan (SADABS; Bruker, 1999) | 4889 reflections with I > 2σ(I) |
| Tmin = 0.950, Tmax = 0.987 | Rint = 0.062 |
| 32921 measured reflections | θmax = 25.4° |
| R[F2 > 2σ(F2)] = 0.056 | H atoms treated by a mixture of independent and constrained refinement |
| wR(F2) = 0.132 | Δρmax = 0.31 e Å−3 |
| S = 1.06 | Δρmin = −0.21 e Å−3 |
| 7544 reflections | Absolute structure: ? |
| 514 parameters | Flack parameter: ? |
| 2 restraints | Rogers parameter: ? |
| x | y | z | Uiso*/Ueq | ||
| P1 | 0.36928 (3) | 0.34803 (8) | 0.48820 (3) | 0.04454 (19) | |
| O1 | 0.31222 (7) | 0.26622 (19) | 0.47912 (8) | 0.0533 (5) | |
| C1 | 0.36101 (11) | 0.5619 (3) | 0.47160 (12) | 0.0469 (6) | |
| C2 | 0.38693 (12) | 0.6430 (3) | 0.43397 (14) | 0.0618 (8) | |
| H2 | 0.4128 | 0.5883 | 0.4178 | 0.074* | |
| C3 | 0.37526 (14) | 0.8053 (3) | 0.41956 (16) | 0.0750 (9) | |
| H3 | 0.3931 | 0.8592 | 0.3938 | 0.090* | |
| C4 | 0.33743 (14) | 0.8863 (3) | 0.44333 (16) | 0.0718 (9) | |
| H4 | 0.3294 | 0.9954 | 0.4336 | 0.086* | |
| C5 | 0.31182 (17) | 0.8090 (4) | 0.48059 (19) | 0.0929 (12) | |
| H5 | 0.2860 | 0.8645 | 0.4965 | 0.112* | |
| C6 | 0.32358 (15) | 0.6479 (4) | 0.49535 (17) | 0.0840 (10) | |
| H6 | 0.3060 | 0.5960 | 0.5218 | 0.101* | |
| C7 | 0.41605 (11) | 0.3290 (3) | 0.57041 (12) | 0.0488 (6) | |
| C8 | 0.40174 (13) | 0.2123 (3) | 0.60849 (14) | 0.0624 (8) | |
| H8 | 0.3692 | 0.1460 | 0.5909 | 0.075* | |
| C9 | 0.43526 (16) | 0.1944 (4) | 0.67180 (17) | 0.0819 (10) | |
| H9 | 0.4251 | 0.1172 | 0.6971 | 0.098* | |
| C10 | 0.48385 (16) | 0.2899 (5) | 0.69802 (16) | 0.0838 (10) | |
| H10 | 0.5069 | 0.2757 | 0.7408 | 0.101* | |
| C11 | 0.49844 (14) | 0.4056 (4) | 0.66157 (16) | 0.0817 (10) | |
| H11 | 0.5314 | 0.4699 | 0.6796 | 0.098* | |
| C12 | 0.46437 (12) | 0.4276 (4) | 0.59788 (14) | 0.0652 (8) | |
| H12 | 0.4739 | 0.5085 | 0.5735 | 0.078* | |
| C13 | 0.40760 (11) | 0.2646 (3) | 0.43713 (12) | 0.0444 (6) | |
| C14 | 0.37875 (11) | 0.2465 (3) | 0.37016 (13) | 0.0490 (6) | |
| C15 | 0.40969 (14) | 0.1765 (3) | 0.33377 (14) | 0.0642 (8) | |
| H15 | 0.3915 | 0.1638 | 0.2897 | 0.077* | |
| C16 | 0.46664 (15) | 0.1255 (3) | 0.36129 (17) | 0.0713 (9) | |
| H16 | 0.4863 | 0.0794 | 0.3356 | 0.086* | |
| C17 | 0.49465 (13) | 0.1416 (3) | 0.42583 (15) | 0.0636 (8) | |
| H17 | 0.5332 | 0.1065 | 0.4442 | 0.076* | |
| C18 | 0.46515 (11) | 0.2104 (3) | 0.46333 (13) | 0.0527 (7) | |
| H18 | 0.4842 | 0.2209 | 0.5074 | 0.063* | |
| C19 | 0.31515 (12) | 0.2952 (4) | 0.33873 (13) | 0.0620 (8) | |
| H19A | 0.2907 | 0.2172 | 0.3511 | 0.063 (8)* | |
| H19B | 0.3092 | 0.3999 | 0.3558 | 0.060 (8)* | |
| N20 | 0.29567 (11) | 0.3056 (3) | 0.27000 (12) | 0.0717 (7) | |
| H20 | 0.2706 (10) | 0.229 (3) | 0.2485 (13) | 0.088 (11)* | |
| C21 | 0.30509 (12) | 0.4386 (4) | 0.23887 (14) | 0.0626 (8) | |
| N22 | 0.34046 (11) | 0.5533 (3) | 0.27378 (12) | 0.0762 (7) | |
| C23 | 0.34899 (16) | 0.6856 (5) | 0.2426 (2) | 0.0977 (12) | |
| H23 | 0.3731 | 0.7665 | 0.2668 | 0.117* | |
| C24 | 0.3252 (2) | 0.7099 (6) | 0.1788 (2) | 0.1167 (15) | |
| H24 | 0.3328 | 0.8039 | 0.1595 | 0.140* | |
| C25 | 0.28940 (18) | 0.5911 (6) | 0.14356 (19) | 0.1085 (14) | |
| H25 | 0.2721 | 0.6039 | 0.0993 | 0.130* | |
| C26 | 0.27881 (14) | 0.4540 (5) | 0.17265 (16) | 0.0819 (10) | |
| H26 | 0.2546 | 0.3727 | 0.1488 | 0.098* | |
| P2 | 0.16172 (3) | 0.96647 (8) | 0.17338 (3) | 0.0487 (2) | |
| O2 | 0.21808 (8) | 1.0515 (2) | 0.20311 (8) | 0.0655 (5) | |
| C27 | 0.14545 (12) | 0.8307 (3) | 0.22969 (12) | 0.0517 (7) | |
| C28 | 0.09067 (13) | 0.8167 (3) | 0.23625 (13) | 0.0598 (7) | |
| H28 | 0.0595 | 0.8773 | 0.2099 | 0.072* | |
| C29 | 0.08174 (15) | 0.7131 (4) | 0.28181 (14) | 0.0728 (9) | |
| H29 | 0.0447 | 0.7053 | 0.2860 | 0.087* | |
| C30 | 0.1266 (2) | 0.6228 (4) | 0.32031 (16) | 0.0897 (11) | |
| H30 | 0.1203 | 0.5525 | 0.3505 | 0.108* | |
| C31 | 0.1809 (2) | 0.6356 (5) | 0.31456 (18) | 0.1041 (13) | |
| H31 | 0.2117 | 0.5737 | 0.3409 | 0.125* | |
| C32 | 0.19065 (15) | 0.7397 (4) | 0.27002 (16) | 0.0855 (10) | |
| H32 | 0.2281 | 0.7487 | 0.2671 | 0.103* | |
| C33 | 0.10068 (11) | 1.1037 (3) | 0.14587 (12) | 0.0479 (6) | |
| C34 | 0.10371 (13) | 1.2529 (3) | 0.17540 (14) | 0.0632 (8) | |
| H34 | 0.1375 | 1.2822 | 0.2085 | 0.076* | |
| C35 | 0.05676 (16) | 1.3588 (4) | 0.15592 (18) | 0.0799 (10) | |
| H35 | 0.0591 | 1.4591 | 0.1760 | 0.096* | |
| C36 | 0.00708 (16) | 1.3166 (4) | 0.10740 (18) | 0.0848 (10) | |
| H36 | −0.0244 | 1.3883 | 0.0947 | 0.102* | |
| C37 | 0.00316 (14) | 1.1700 (4) | 0.07738 (15) | 0.0808 (10) | |
| H37 | −0.0308 | 1.1418 | 0.0442 | 0.097* | |
| C38 | 0.04992 (13) | 1.0642 (4) | 0.09665 (14) | 0.0659 (8) | |
| H38 | 0.0473 | 0.9644 | 0.0761 | 0.079* | |
| C39 | 0.15882 (10) | 0.8468 (3) | 0.10359 (12) | 0.0458 (6) | |
| C40 | 0.17556 (10) | 0.9141 (3) | 0.05390 (12) | 0.0472 (6) | |
| C41 | 0.17159 (12) | 0.8183 (4) | 0.00108 (13) | 0.0600 (7) | |
| H41 | 0.1829 | 0.8612 | −0.0321 | 0.072* | |
| C42 | 0.15121 (13) | 0.6606 (4) | −0.00373 (14) | 0.0674 (8) | |
| H42 | 0.1490 | 0.5988 | −0.0398 | 0.081* | |
| C43 | 0.13435 (12) | 0.5957 (3) | 0.04431 (14) | 0.0658 (8) | |
| H43 | 0.1204 | 0.4898 | 0.0412 | 0.079* | |
| C44 | 0.13816 (12) | 0.6885 (3) | 0.09777 (13) | 0.0574 (7) | |
| H44 | 0.1266 | 0.6440 | 0.1306 | 0.069* | |
| C45 | 0.19811 (12) | 1.0878 (3) | 0.05873 (13) | 0.0596 (7) | |
| H45A | 0.1711 | 1.1572 | 0.0710 | 0.071* | |
| H45B | 0.2356 | 1.0929 | 0.0930 | 0.071* | |
| N46 | 0.20546 (10) | 1.1520 (3) | 0.00087 (11) | 0.0655 (7) | |
| H46 | 0.2420 (6) | 1.166 (3) | −0.0005 (14) | 0.079* | |
| C47 | 0.16033 (12) | 1.2132 (3) | −0.04842 (13) | 0.0517 (7) | |
| N48 | 0.10652 (10) | 1.1985 (3) | −0.04558 (12) | 0.0667 (7) | |
| C49 | 0.06305 (14) | 1.2601 (4) | −0.0959 (2) | 0.0875 (11) | |
| H49 | 0.0249 | 1.2524 | −0.0950 | 0.105* | |
| C50 | 0.07112 (18) | 1.3323 (4) | −0.1475 (2) | 0.0947 (12) | |
| H50 | 0.0394 | 1.3712 | −0.1811 | 0.114* | |
| C51 | 0.12719 (18) | 1.3467 (4) | −0.14908 (15) | 0.0808 (10) | |
| H51 | 0.1341 | 1.3965 | −0.1839 | 0.097* | |
| C52 | 0.17227 (13) | 1.2881 (3) | −0.09982 (13) | 0.0600 (7) | |
| H52 | 0.2106 | 1.2974 | −0.1000 | 0.072* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| P1 | 0.0453 (4) | 0.0368 (4) | 0.0537 (4) | −0.0034 (3) | 0.0191 (3) | −0.0036 (3) |
| O1 | 0.0440 (10) | 0.0464 (10) | 0.0716 (12) | −0.0070 (8) | 0.0217 (9) | −0.0086 (9) |
| C1 | 0.0500 (15) | 0.0384 (14) | 0.0544 (16) | −0.0029 (12) | 0.0197 (13) | −0.0058 (12) |
| C2 | 0.0686 (19) | 0.0444 (16) | 0.083 (2) | −0.0057 (14) | 0.0391 (16) | −0.0039 (15) |
| C3 | 0.099 (3) | 0.0467 (18) | 0.091 (2) | −0.0119 (17) | 0.047 (2) | 0.0037 (17) |
| C4 | 0.083 (2) | 0.0346 (16) | 0.094 (2) | −0.0013 (16) | 0.0242 (19) | −0.0019 (16) |
| C5 | 0.119 (3) | 0.0454 (19) | 0.144 (3) | 0.0115 (19) | 0.083 (3) | 0.000 (2) |
| C6 | 0.114 (3) | 0.0493 (19) | 0.120 (3) | 0.0035 (18) | 0.080 (2) | 0.0017 (19) |
| C7 | 0.0506 (15) | 0.0481 (15) | 0.0527 (16) | −0.0001 (13) | 0.0236 (13) | −0.0009 (13) |
| C8 | 0.0638 (18) | 0.0644 (19) | 0.064 (2) | −0.0008 (15) | 0.0276 (16) | 0.0057 (16) |
| C9 | 0.096 (3) | 0.091 (3) | 0.066 (2) | 0.010 (2) | 0.037 (2) | 0.0181 (19) |
| C10 | 0.087 (3) | 0.113 (3) | 0.0507 (19) | 0.017 (2) | 0.0218 (19) | 0.002 (2) |
| C11 | 0.074 (2) | 0.099 (3) | 0.062 (2) | −0.0126 (19) | 0.0089 (18) | −0.016 (2) |
| C12 | 0.0689 (19) | 0.0671 (19) | 0.0585 (19) | −0.0118 (16) | 0.0195 (16) | −0.0020 (15) |
| C13 | 0.0473 (15) | 0.0331 (13) | 0.0570 (17) | −0.0022 (11) | 0.0228 (13) | −0.0001 (12) |
| C14 | 0.0566 (17) | 0.0376 (14) | 0.0546 (17) | −0.0023 (12) | 0.0208 (14) | 0.0009 (12) |
| C15 | 0.088 (2) | 0.0537 (17) | 0.0581 (18) | 0.0001 (17) | 0.0334 (17) | −0.0043 (15) |
| C16 | 0.090 (2) | 0.0592 (19) | 0.083 (2) | 0.0169 (17) | 0.053 (2) | 0.0038 (17) |
| C17 | 0.0638 (19) | 0.0553 (18) | 0.081 (2) | 0.0141 (15) | 0.0363 (17) | 0.0095 (17) |
| C18 | 0.0564 (17) | 0.0451 (15) | 0.0610 (17) | 0.0031 (13) | 0.0254 (14) | 0.0045 (13) |
| C19 | 0.0643 (19) | 0.0597 (19) | 0.0576 (19) | −0.0071 (15) | 0.0140 (15) | −0.0010 (15) |
| N20 | 0.0771 (18) | 0.0701 (18) | 0.0536 (16) | −0.0213 (15) | 0.0020 (13) | −0.0056 (14) |
| C21 | 0.0540 (17) | 0.071 (2) | 0.0556 (19) | 0.0042 (16) | 0.0077 (15) | −0.0050 (17) |
| N22 | 0.0786 (18) | 0.0664 (17) | 0.0721 (17) | −0.0081 (14) | 0.0091 (14) | 0.0047 (15) |
| C23 | 0.092 (3) | 0.077 (3) | 0.116 (3) | −0.006 (2) | 0.023 (2) | 0.018 (2) |
| C24 | 0.099 (3) | 0.127 (4) | 0.117 (4) | 0.009 (3) | 0.025 (3) | 0.057 (3) |
| C25 | 0.089 (3) | 0.153 (4) | 0.072 (3) | 0.027 (3) | 0.010 (2) | 0.038 (3) |
| C26 | 0.067 (2) | 0.106 (3) | 0.059 (2) | 0.012 (2) | 0.0026 (17) | 0.002 (2) |
| P2 | 0.0565 (4) | 0.0461 (4) | 0.0431 (4) | −0.0054 (3) | 0.0156 (3) | −0.0045 (3) |
| O2 | 0.0632 (12) | 0.0670 (12) | 0.0586 (12) | −0.0165 (10) | 0.0093 (9) | −0.0092 (10) |
| C27 | 0.0675 (18) | 0.0471 (15) | 0.0407 (15) | 0.0036 (14) | 0.0177 (14) | −0.0023 (12) |
| C28 | 0.073 (2) | 0.0579 (18) | 0.0476 (16) | −0.0048 (15) | 0.0185 (14) | −0.0008 (14) |
| C29 | 0.090 (2) | 0.079 (2) | 0.0545 (19) | −0.0183 (19) | 0.0302 (18) | −0.0005 (17) |
| C30 | 0.133 (3) | 0.080 (2) | 0.057 (2) | −0.007 (2) | 0.032 (2) | 0.0119 (18) |
| C31 | 0.123 (3) | 0.102 (3) | 0.085 (3) | 0.034 (3) | 0.031 (2) | 0.044 (2) |
| C32 | 0.087 (2) | 0.095 (3) | 0.079 (2) | 0.020 (2) | 0.032 (2) | 0.026 (2) |
| C33 | 0.0635 (17) | 0.0411 (14) | 0.0449 (15) | −0.0039 (13) | 0.0254 (14) | −0.0032 (12) |
| C34 | 0.074 (2) | 0.0526 (18) | 0.0677 (19) | −0.0069 (16) | 0.0290 (16) | −0.0058 (15) |
| C35 | 0.095 (3) | 0.0499 (19) | 0.106 (3) | 0.0034 (19) | 0.048 (2) | −0.0115 (19) |
| C36 | 0.086 (3) | 0.077 (2) | 0.095 (3) | 0.027 (2) | 0.035 (2) | 0.007 (2) |
| C37 | 0.071 (2) | 0.088 (2) | 0.074 (2) | 0.0184 (19) | 0.0108 (17) | −0.011 (2) |
| C38 | 0.071 (2) | 0.0598 (18) | 0.0625 (19) | 0.0109 (16) | 0.0159 (16) | −0.0121 (15) |
| C39 | 0.0469 (15) | 0.0439 (15) | 0.0452 (15) | 0.0003 (12) | 0.0134 (12) | −0.0017 (12) |
| C40 | 0.0451 (14) | 0.0540 (16) | 0.0409 (14) | 0.0046 (12) | 0.0118 (12) | −0.0015 (13) |
| C41 | 0.0615 (18) | 0.076 (2) | 0.0440 (16) | 0.0086 (16) | 0.0189 (14) | 0.0014 (15) |
| C42 | 0.078 (2) | 0.070 (2) | 0.0513 (18) | 0.0105 (17) | 0.0161 (16) | −0.0166 (16) |
| C43 | 0.077 (2) | 0.0509 (17) | 0.067 (2) | 0.0012 (15) | 0.0200 (16) | −0.0128 (16) |
| C44 | 0.0658 (18) | 0.0517 (17) | 0.0573 (18) | −0.0040 (14) | 0.0236 (14) | −0.0043 (14) |
| C45 | 0.0651 (18) | 0.0654 (18) | 0.0494 (16) | −0.0061 (15) | 0.0204 (14) | 0.0058 (14) |
| N46 | 0.0513 (14) | 0.0871 (18) | 0.0620 (15) | 0.0015 (14) | 0.0239 (13) | 0.0205 (14) |
| C47 | 0.0514 (17) | 0.0470 (15) | 0.0569 (17) | 0.0022 (13) | 0.0180 (14) | −0.0001 (13) |
| N48 | 0.0519 (15) | 0.0629 (16) | 0.0865 (19) | 0.0028 (12) | 0.0244 (14) | 0.0023 (14) |
| C49 | 0.051 (2) | 0.067 (2) | 0.132 (3) | 0.0039 (17) | 0.012 (2) | −0.006 (2) |
| C50 | 0.087 (3) | 0.075 (2) | 0.094 (3) | 0.020 (2) | −0.010 (2) | 0.003 (2) |
| C51 | 0.109 (3) | 0.069 (2) | 0.059 (2) | 0.019 (2) | 0.020 (2) | 0.0099 (17) |
| C52 | 0.0700 (19) | 0.0587 (18) | 0.0553 (18) | 0.0100 (15) | 0.0260 (16) | 0.0065 (15) |
| P1—O1 | 1.4866 (17) | P2—O2 | 1.4782 (18) |
| P1—C1 | 1.798 (2) | P2—C33 | 1.797 (3) |
| P1—C7 | 1.798 (3) | P2—C27 | 1.805 (3) |
| P1—C13 | 1.808 (2) | P2—C39 | 1.806 (3) |
| C1—C2 | 1.364 (3) | C27—C32 | 1.380 (4) |
| C1—C6 | 1.378 (4) | C27—C28 | 1.381 (4) |
| C2—C3 | 1.382 (4) | C28—C29 | 1.386 (4) |
| C2—H2 | 0.9300 | C28—H28 | 0.9300 |
| C3—C4 | 1.365 (4) | C29—C30 | 1.358 (4) |
| C3—H3 | 0.9300 | C29—H29 | 0.9300 |
| C4—C5 | 1.338 (4) | C30—C31 | 1.361 (5) |
| C4—H4 | 0.9300 | C30—H30 | 0.9300 |
| C5—C6 | 1.374 (4) | C31—C32 | 1.378 (5) |
| C5—H5 | 0.9300 | C31—H31 | 0.9300 |
| C6—H6 | 0.9300 | C32—H32 | 0.9300 |
| C7—C12 | 1.387 (4) | C33—C34 | 1.381 (3) |
| C7—C8 | 1.391 (3) | C33—C38 | 1.382 (4) |
| C8—C9 | 1.370 (4) | C34—C35 | 1.382 (4) |
| C8—H8 | 0.9300 | C34—H34 | 0.9300 |
| C9—C10 | 1.372 (5) | C35—C36 | 1.363 (4) |
| C9—H9 | 0.9300 | C35—H35 | 0.9300 |
| C10—C11 | 1.364 (4) | C36—C37 | 1.365 (4) |
| C10—H10 | 0.9300 | C36—H36 | 0.9300 |
| C11—C12 | 1.385 (4) | C37—C38 | 1.379 (4) |
| C11—H11 | 0.9300 | C37—H37 | 0.9300 |
| C12—H12 | 0.9300 | C38—H38 | 0.9300 |
| C13—C18 | 1.391 (3) | C39—C44 | 1.387 (3) |
| C13—C14 | 1.416 (3) | C39—C40 | 1.398 (3) |
| C14—C15 | 1.386 (3) | C40—C41 | 1.382 (3) |
| C14—C19 | 1.516 (4) | C40—C45 | 1.522 (3) |
| C15—C16 | 1.374 (4) | C41—C42 | 1.381 (4) |
| C15—H15 | 0.9300 | C41—H41 | 0.9300 |
| C16—C17 | 1.364 (4) | C42—C43 | 1.360 (4) |
| C16—H16 | 0.9300 | C42—H42 | 0.9300 |
| C17—C18 | 1.376 (3) | C43—C44 | 1.380 (4) |
| C17—H17 | 0.9300 | C43—H43 | 0.9300 |
| C18—H18 | 0.9300 | C44—H44 | 0.9300 |
| C19—N20 | 1.431 (3) | C45—N46 | 1.442 (3) |
| C19—H19A | 0.9700 | C45—H45A | 0.9700 |
| C19—H19B | 0.9700 | C45—H45B | 0.9700 |
| N20—C21 | 1.350 (4) | N46—C47 | 1.357 (3) |
| N20—H20 | 0.895 (10) | N46—H46 | 0.899 (10) |
| C21—N22 | 1.335 (3) | C47—N48 | 1.326 (3) |
| C21—C26 | 1.391 (4) | C47—C52 | 1.398 (4) |
| N22—C23 | 1.339 (4) | N48—C49 | 1.350 (4) |
| C23—C24 | 1.346 (5) | C49—C50 | 1.350 (5) |
| C23—H23 | 0.9300 | C49—H49 | 0.9300 |
| C24—C25 | 1.366 (6) | C50—C51 | 1.370 (5) |
| C24—H24 | 0.9300 | C50—H50 | 0.9300 |
| C25—C26 | 1.363 (5) | C51—C52 | 1.348 (4) |
| C25—H25 | 0.9300 | C51—H51 | 0.9300 |
| C26—H26 | 0.9300 | C52—H52 | 0.9300 |
| O1—P1—C1 | 112.39 (11) | O2—P2—C33 | 112.62 (12) |
| O1—P1—C7 | 110.16 (11) | O2—P2—C27 | 111.44 (12) |
| C1—P1—C7 | 106.34 (12) | C33—P2—C27 | 106.42 (12) |
| O1—P1—C13 | 112.55 (10) | O2—P2—C39 | 114.12 (11) |
| C1—P1—C13 | 106.98 (11) | C33—P2—C39 | 104.94 (11) |
| C7—P1—C13 | 108.14 (12) | C27—P2—C39 | 106.73 (12) |
| C2—C1—C6 | 117.7 (2) | C32—C27—C28 | 118.0 (3) |
| C2—C1—P1 | 124.1 (2) | C32—C27—P2 | 118.3 (2) |
| C6—C1—P1 | 118.0 (2) | C28—C27—P2 | 123.6 (2) |
| C1—C2—C3 | 120.9 (3) | C27—C28—C29 | 120.5 (3) |
| C1—C2—H2 | 119.5 | C27—C28—H28 | 119.7 |
| C3—C2—H2 | 119.5 | C29—C28—H28 | 119.7 |
| C4—C3—C2 | 119.8 (3) | C30—C29—C28 | 120.5 (3) |
| C4—C3—H3 | 120.1 | C30—C29—H29 | 119.8 |
| C2—C3—H3 | 120.1 | C28—C29—H29 | 119.8 |
| C5—C4—C3 | 120.2 (3) | C29—C30—C31 | 119.7 (3) |
| C5—C4—H4 | 119.9 | C29—C30—H30 | 120.2 |
| C3—C4—H4 | 119.9 | C31—C30—H30 | 120.2 |
| C4—C5—C6 | 120.2 (3) | C30—C31—C32 | 120.5 (3) |
| C4—C5—H5 | 119.9 | C30—C31—H31 | 119.8 |
| C6—C5—H5 | 119.9 | C32—C31—H31 | 119.8 |
| C5—C6—C1 | 121.2 (3) | C31—C32—C27 | 120.8 (3) |
| C5—C6—H6 | 119.4 | C31—C32—H32 | 119.6 |
| C1—C6—H6 | 119.4 | C27—C32—H32 | 119.6 |
| C12—C7—C8 | 118.8 (3) | C34—C33—C38 | 118.4 (3) |
| C12—C7—P1 | 123.3 (2) | C34—C33—P2 | 119.4 (2) |
| C8—C7—P1 | 117.9 (2) | C38—C33—P2 | 122.3 (2) |
| C9—C8—C7 | 120.4 (3) | C33—C34—C35 | 120.3 (3) |
| C9—C8—H8 | 119.8 | C33—C34—H34 | 119.9 |
| C7—C8—H8 | 119.8 | C35—C34—H34 | 119.9 |
| C8—C9—C10 | 120.3 (3) | C36—C35—C34 | 120.2 (3) |
| C8—C9—H9 | 119.9 | C36—C35—H35 | 119.9 |
| C10—C9—H9 | 119.9 | C34—C35—H35 | 119.9 |
| C11—C10—C9 | 120.2 (3) | C35—C36—C37 | 120.5 (3) |
| C11—C10—H10 | 119.9 | C35—C36—H36 | 119.7 |
| C9—C10—H10 | 119.9 | C37—C36—H36 | 119.7 |
| C10—C11—C12 | 120.3 (3) | C36—C37—C38 | 119.4 (3) |
| C10—C11—H11 | 119.9 | C36—C37—H37 | 120.3 |
| C12—C11—H11 | 119.9 | C38—C37—H37 | 120.3 |
| C11—C12—C7 | 120.0 (3) | C37—C38—C33 | 121.2 (3) |
| C11—C12—H12 | 120.0 | C37—C38—H38 | 119.4 |
| C7—C12—H12 | 120.0 | C33—C38—H38 | 119.4 |
| C18—C13—C14 | 118.8 (2) | C44—C39—C40 | 119.2 (2) |
| C18—C13—P1 | 120.6 (2) | C44—C39—P2 | 120.30 (19) |
| C14—C13—P1 | 120.59 (19) | C40—C39—P2 | 120.45 (19) |
| C15—C14—C13 | 118.0 (2) | C41—C40—C39 | 118.2 (2) |
| C15—C14—C19 | 120.2 (2) | C41—C40—C45 | 121.4 (2) |
| C13—C14—C19 | 121.7 (2) | C39—C40—C45 | 120.4 (2) |
| C16—C15—C14 | 121.5 (3) | C42—C41—C40 | 121.8 (3) |
| C16—C15—H15 | 119.2 | C42—C41—H41 | 119.1 |
| C14—C15—H15 | 119.2 | C40—C41—H41 | 119.1 |
| C17—C16—C15 | 120.8 (3) | C43—C42—C41 | 120.0 (3) |
| C17—C16—H16 | 119.6 | C43—C42—H42 | 120.0 |
| C15—C16—H16 | 119.6 | C41—C42—H42 | 120.0 |
| C16—C17—C18 | 119.1 (3) | C42—C43—C44 | 119.4 (3) |
| C16—C17—H17 | 120.4 | C42—C43—H43 | 120.3 |
| C18—C17—H17 | 120.4 | C44—C43—H43 | 120.3 |
| C17—C18—C13 | 121.7 (3) | C43—C44—C39 | 121.4 (3) |
| C17—C18—H18 | 119.1 | C43—C44—H44 | 119.3 |
| C13—C18—H18 | 119.1 | C39—C44—H44 | 119.3 |
| N20—C19—C14 | 115.5 (2) | N46—C45—C40 | 115.4 (2) |
| N20—C19—H19A | 108.4 | N46—C45—H45A | 108.4 |
| C14—C19—H19A | 108.4 | C40—C45—H45A | 108.4 |
| N20—C19—H19B | 108.4 | N46—C45—H45B | 108.4 |
| C14—C19—H19B | 108.4 | C40—C45—H45B | 108.4 |
| H19A—C19—H19B | 107.5 | H45A—C45—H45B | 107.5 |
| C21—N20—C19 | 122.2 (3) | C47—N46—C45 | 122.9 (2) |
| C21—N20—H20 | 120 (2) | C47—N46—H46 | 117.7 (19) |
| C19—N20—H20 | 117 (2) | C45—N46—H46 | 118.8 (19) |
| N22—C21—N20 | 117.7 (3) | N48—C47—N46 | 118.1 (3) |
| N22—C21—C26 | 121.6 (3) | N48—C47—C52 | 122.9 (3) |
| N20—C21—C26 | 120.7 (3) | N46—C47—C52 | 119.1 (2) |
| C21—N22—C23 | 117.3 (3) | C47—N48—C49 | 115.9 (3) |
| N22—C23—C24 | 124.8 (4) | C50—C49—N48 | 124.6 (3) |
| N22—C23—H23 | 117.6 | C50—C49—H49 | 117.7 |
| C24—C23—H23 | 117.6 | N48—C49—H49 | 117.7 |
| C23—C24—C25 | 117.4 (4) | C49—C50—C51 | 118.4 (3) |
| C23—C24—H24 | 121.3 | C49—C50—H50 | 120.8 |
| C25—C24—H24 | 121.3 | C51—C50—H50 | 120.8 |
| C26—C25—C24 | 120.6 (4) | C52—C51—C50 | 119.5 (3) |
| C26—C25—H25 | 119.7 | C52—C51—H51 | 120.3 |
| C24—C25—H25 | 119.7 | C50—C51—H51 | 120.3 |
| C25—C26—C21 | 118.4 (4) | C51—C52—C47 | 118.8 (3) |
| C25—C26—H26 | 120.8 | C51—C52—H52 | 120.6 |
| C21—C26—H26 | 120.8 | C47—C52—H52 | 120.6 |
| O1—P1—C1—C2 | −132.3 (2) | O2—P2—C27—C32 | −40.9 (3) |
| C7—P1—C1—C2 | 107.1 (2) | C33—P2—C27—C32 | −164.1 (2) |
| C13—P1—C1—C2 | −8.3 (3) | C39—P2—C27—C32 | 84.3 (2) |
| O1—P1—C1—C6 | 43.9 (3) | O2—P2—C27—C28 | 136.7 (2) |
| C7—P1—C1—C6 | −76.7 (3) | C33—P2—C27—C28 | 13.6 (3) |
| C13—P1—C1—C6 | 167.9 (2) | C39—P2—C27—C28 | −98.1 (2) |
| C6—C1—C2—C3 | −0.9 (4) | C32—C27—C28—C29 | −0.5 (4) |
| P1—C1—C2—C3 | 175.3 (2) | P2—C27—C28—C29 | −178.2 (2) |
| C1—C2—C3—C4 | 0.2 (5) | C27—C28—C29—C30 | −0.5 (4) |
| C2—C3—C4—C5 | 0.2 (5) | C28—C29—C30—C31 | 0.7 (5) |
| C3—C4—C5—C6 | 0.2 (6) | C29—C30—C31—C32 | 0.1 (6) |
| C4—C5—C6—C1 | −1.0 (6) | C30—C31—C32—C27 | −1.1 (6) |
| C2—C1—C6—C5 | 1.3 (5) | C28—C27—C32—C31 | 1.3 (5) |
| P1—C1—C6—C5 | −175.2 (3) | P2—C27—C32—C31 | 179.1 (3) |
| O1—P1—C7—C12 | −161.6 (2) | O2—P2—C33—C34 | −26.9 (2) |
| C1—P1—C7—C12 | −39.6 (3) | C27—P2—C33—C34 | 95.5 (2) |
| C13—P1—C7—C12 | 75.0 (2) | C39—P2—C33—C34 | −151.6 (2) |
| O1—P1—C7—C8 | 16.5 (2) | O2—P2—C33—C38 | 154.4 (2) |
| C1—P1—C7—C8 | 138.5 (2) | C27—P2—C33—C38 | −83.2 (2) |
| C13—P1—C7—C8 | −106.9 (2) | C39—P2—C33—C38 | 29.7 (2) |
| C12—C7—C8—C9 | −0.6 (4) | C38—C33—C34—C35 | 0.2 (4) |
| P1—C7—C8—C9 | −178.8 (2) | P2—C33—C34—C35 | −178.6 (2) |
| C7—C8—C9—C10 | −1.0 (5) | C33—C34—C35—C36 | 0.1 (5) |
| C8—C9—C10—C11 | 1.3 (5) | C34—C35—C36—C37 | −0.3 (5) |
| C9—C10—C11—C12 | 0.0 (5) | C35—C36—C37—C38 | 0.2 (5) |
| C10—C11—C12—C7 | −1.7 (5) | C36—C37—C38—C33 | 0.1 (5) |
| C8—C7—C12—C11 | 2.0 (4) | C34—C33—C38—C37 | −0.3 (4) |
| P1—C7—C12—C11 | −179.9 (2) | P2—C33—C38—C37 | 178.5 (2) |
| O1—P1—C13—C18 | −126.2 (2) | O2—P2—C39—C44 | 132.3 (2) |
| C1—P1—C13—C18 | 109.8 (2) | C33—P2—C39—C44 | −103.9 (2) |
| C7—P1—C13—C18 | −4.3 (2) | C27—P2—C39—C44 | 8.8 (2) |
| O1—P1—C13—C14 | 50.9 (2) | O2—P2—C39—C40 | −49.7 (2) |
| C1—P1—C13—C14 | −73.0 (2) | C33—P2—C39—C40 | 74.1 (2) |
| C7—P1—C13—C14 | 172.84 (19) | C27—P2—C39—C40 | −173.3 (2) |
| C18—C13—C14—C15 | −0.5 (3) | C44—C39—C40—C41 | −1.0 (4) |
| P1—C13—C14—C15 | −177.76 (18) | P2—C39—C40—C41 | −178.93 (19) |
| C18—C13—C14—C19 | 177.0 (2) | C44—C39—C40—C45 | 179.7 (2) |
| P1—C13—C14—C19 | −0.2 (3) | P2—C39—C40—C45 | 1.7 (3) |
| C13—C14—C15—C16 | 0.1 (4) | C39—C40—C41—C42 | 0.6 (4) |
| C19—C14—C15—C16 | −177.5 (3) | C45—C40—C41—C42 | 180.0 (3) |
| C14—C15—C16—C17 | 0.3 (4) | C40—C41—C42—C43 | 0.0 (4) |
| C15—C16—C17—C18 | −0.2 (4) | C41—C42—C43—C44 | −0.4 (4) |
| C16—C17—C18—C13 | −0.3 (4) | C42—C43—C44—C39 | 0.0 (4) |
| C14—C13—C18—C17 | 0.6 (4) | C40—C39—C44—C43 | 0.7 (4) |
| P1—C13—C18—C17 | 177.9 (2) | P2—C39—C44—C43 | 178.6 (2) |
| C15—C14—C19—N20 | −16.3 (4) | C41—C40—C45—N46 | 9.8 (4) |
| C13—C14—C19—N20 | 166.2 (2) | C39—C40—C45—N46 | −170.9 (2) |
| C14—C19—N20—C21 | −82.7 (4) | C40—C45—N46—C47 | 81.3 (3) |
| C19—N20—C21—N22 | 9.1 (4) | C45—N46—C47—N48 | −6.7 (4) |
| C19—N20—C21—C26 | −171.1 (3) | C45—N46—C47—C52 | 173.5 (2) |
| N20—C21—N22—C23 | −179.2 (3) | N46—C47—N48—C49 | −179.5 (3) |
| C26—C21—N22—C23 | 1.0 (4) | C52—C47—N48—C49 | 0.3 (4) |
| C21—N22—C23—C24 | −0.9 (5) | C47—N48—C49—C50 | 0.6 (5) |
| N22—C23—C24—C25 | 0.5 (7) | N48—C49—C50—C51 | −0.9 (6) |
| C23—C24—C25—C26 | −0.1 (6) | C49—C50—C51—C52 | 0.4 (5) |
| C24—C25—C26—C21 | 0.2 (6) | C50—C51—C52—C47 | 0.3 (5) |
| N22—C21—C26—C25 | −0.7 (5) | N48—C47—C52—C51 | −0.7 (4) |
| N20—C21—C26—C25 | 179.5 (3) | N46—C47—C52—C51 | 179.1 (3) |
| Cg1, Cg2 and Cg3 are the centroids of the C13–C18, C39–C44 and N48,C47,C49–C52 rings, respectively. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N20—H20···O2i | 0.90 (1) | 1.98 (1) | 2.872 (3) | 177 (3) |
| N46—H46···O1ii | 0.90 (1) | 1.97 (1) | 2.850 (3) | 166 (3) |
| C4—H4···O1iii | 0.93 | 2.53 | 3.329 | 144 |
| C52—H52···O1ii | 0.93 | 2.55 | 3.282 | 135 |
| C3—H3···Cg1iii | 0.93 | 2.95 | 3.627 (3) | 131 |
| C25—H25···Cg2 | 0.93 | 2.95 | 3.495 (5) | 119 |
| C30—H30···Cg3iv | 0.93 | 2.93 | 3.772 (4) | 152 |
| C42—H42···Cg3i | 0.93 | 2.96 | 3.746 (3) | 154 |
| Symmetry codes: (i) x, y−1, z; (ii) x, −y+3/2, z−1/2; (iii) x, y+1, z; (iv) x, −y+3/2, z+1/2. |
| Cg1, Cg2 and Cg3 are the centroids of the C13–C18, C39–C44 and N48,C47,C49–C52 rings, respectively. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N20—H20···O2i | 0.90 (1) | 1.98 (1) | 2.872 (3) | 177 (3) |
| N46—H46···O1ii | 0.90 (1) | 1.97 (1) | 2.850 (3) | 166 (3) |
| C4—H4···O1iii | 0.93 | 2.53 | 3.329 | 144 |
| C52—H52···O1ii | 0.93 | 2.55 | 3.282 | 135 |
| C3—H3···Cg1iii | 0.93 | 2.95 | 3.627 (3) | 131 |
| C25—H25···Cg2 | 0.93 | 2.95 | 3.495 (5) | 119 |
| C30—H30···Cg3iv | 0.93 | 2.93 | 3.772 (4) | 152 |
| C42—H42···Cg3i | 0.93 | 2.96 | 3.746 (3) | 154 |
| Symmetry codes: (i) x, y−1, z; (ii) x, −y+3/2, z−1/2; (iii) x, y+1, z; (iv) x, −y+3/2, z+1/2. |
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Nitrogen atoms of pyridine family heterocyclic compounds behave like excellent ligands in different reactions involving transition metal ions (Borah et al., 2010). The presence of named ligands provides stability to the metal complex, even if the reaction is performed at high temperatures (Landaeta et al., 2006; Ribeiro et al., 2006). Aminophosphines type P,N are known to be hemilabile (Koprowski et al., 2002; Pfeiffer et al., 2000). In the quest for P,N ligands (Pretorius et al., 2004; Sánchez et al., 2006) that improve the stability of the metal complex and decrease the hemilability, we describe the crystal structure of the title compound.
The asymmetric unit contains two crystallographically independent molecules (Z = 8). The structure with numbering scheme is shown in Fig. 1. The molecules show different planar angles between the aromatic rings. The 2-aminopyridine moieties (N20···C26 in I and N46···C52 in II), are essentially planar and almost perpendicular to the benzene rings bonded to phosphino oxide (C13···C18 and C39···C44), the dihedral angles being 88.58 (7)° in I and 82.47 (9)° in II. These angles are similar to those of related structures found in the literature (e.g. 82.24°, Pretorius et al., 2004).
Due the conformational geometry adopted by the molecules, in the crystal packing strong N—H···O intermolecular interactions and weak C—H···O as well as C—H···π intra and intermolecular interactions are present (see Tables and Fig. 2).