organic compounds
N,N′-Dibenzyl-N′′-(2,6-difluorobenzoyl)-N,N′-dimethylphosphoric triamide
aDepartment of Chemistry, Ferdowsi University of Mashhad, Mashhad 91779, Iran, and bDepartment of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
*Correspondence e-mail: mehrdad_pourayoubi@yahoo.com
The phosphoryl and carbonyl groups in the title compound, C23H24F2N3O2P, are anti to each other. The P atom is in a tetrahedral coordination environment and the environment of each N atom is essentially planar, the average bond angles at the two N atoms being 119.9 and 119.1°. The H atom of the C(=O)NHP(=O) group is involved in an intermolecular –P=O⋯H–N– hydrogen bond, forming centrosymmetric dimers.
Related literature
For related structures, see: Pourayoubi & Sabbaghi (2009); Sabbaghi et al. (2010).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536810035725/ng5027sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810035725/ng5027Isup2.hkl
The reaction of phosphorus pentachloride (3.478 g, 16.7 mmol) and 2,6-difluorobenzamide (2.624 g, 16.7 mmol) in dry CCl4 at 358 K (3 h) and then the treatment of formic acid (0.769 g, 16.7 mmol) at ice bath temperature leads to 2,6-F2—C6H3C(O)NHP(O)Cl2. To a solution of 2,6-F2—C6H3C(O)NHP(O)Cl2 (0.411 g, 1.5 mmol) in dry CHCl3, a solution of N-methylbenzylamine (0.727 g, 6 mmol) in dry CHCl3 was added dropwise at 273 K. After 4 h stirring, the solvent was evaporated in vacuum. The solid was washed with distilled water. Single crystals were obtained from a solution of the title compound in CH3OH and n-C7H14 (5:1) after slow evaporation at room temperature. IR (KBr, cm-1): 3446, 3042, 2867, 1690, 1607, 1465, 1369, 1210, 1150, 1019, 865, 823, 763, 725.
APEX2 software was used for preliminary determination of the
Determination of integral intensities and were performed using SAINT and data were corrected for absorption using SADABS. Structure was solved by and all non-hydrogen atoms were refined as anisotropic by Fourier full matrix least squares. Hydrogen H1A was found from a Fourier difference map and was allowed to refine and all other hydrogen atoms were placed in calculated positions with appropriate riding factors.Data collection: SMART (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. An ORTEP-style plot of title compound. Ellipsoids are given at the 50% probability level. |
C23H24F2N3O2P | Z = 2 |
Mr = 443.42 | F(000) = 464 |
Triclinic, P1 | Dx = 1.318 Mg m−3 |
a = 9.9370 (11) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 11.1093 (15) Å | Cell parameters from 5531 reflections |
c = 11.5902 (14) Å | θ = 2.4–27.8° |
α = 89.101 (4)° | µ = 0.16 mm−1 |
β = 67.826 (4)° | T = 200 K |
γ = 71.664 (4)° | BLOCK, colorless |
V = 1116.9 (2) Å3 | 0.30 × 0.25 × 0.20 mm |
Bruker SMART X2S benchtop CCD area-detector diffractometer | 5173 independent reflections |
Radiation source: fine-focus sealed tube | 3851 reflections with I > 2σ(I) |
Curved silicon crystal monochromator | Rint = 0.036 |
phi and ω scans | θmax = 27.8°, θmin = 2.4° |
Absorption correction: multi-scan SADABS (Bruker, 2005) | h = −13→13 |
Tmin = 0.952, Tmax = 0.968 | k = −14→14 |
13602 measured reflections | l = −15→15 |
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)] = 0.048 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.126 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0603P)2 + 0.2218P] where P = (Fo2 + 2Fc2)/3 |
5173 reflections | (Δ/σ)max = 0.001 |
286 parameters | Δρmax = 0.37 e Å−3 |
0 restraints | Δρmin = −0.32 e Å−3 |
C23H24F2N3O2P | γ = 71.664 (4)° |
Mr = 443.42 | V = 1116.9 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.9370 (11) Å | Mo Kα radiation |
b = 11.1093 (15) Å | µ = 0.16 mm−1 |
c = 11.5902 (14) Å | T = 200 K |
α = 89.101 (4)° | 0.30 × 0.25 × 0.20 mm |
β = 67.826 (4)° |
Bruker SMART X2S benchtop CCD area-detector diffractometer | 5173 independent reflections |
Absorption correction: multi-scan SADABS (Bruker, 2005) | 3851 reflections with I > 2σ(I) |
Tmin = 0.952, Tmax = 0.968 | Rint = 0.036 |
13602 measured reflections |
R[F2 > 2σ(F2)] = 0.048 | 0 restraints |
wR(F2) = 0.126 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.03 | Δρmax = 0.37 e Å−3 |
5173 reflections | Δρmin = −0.32 e Å−3 |
286 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
P1 | 0.66485 (5) | 0.42270 (4) | 0.29906 (4) | 0.02461 (13) | |
F1 | 0.41237 (17) | 0.18210 (16) | 0.50507 (15) | 0.0723 (5) | |
F2 | 0.16095 (14) | 0.43844 (12) | 0.27352 (13) | 0.0532 (4) | |
O1 | 0.50833 (16) | 0.27969 (15) | 0.19272 (13) | 0.0445 (4) | |
O2 | 0.68882 (13) | 0.46617 (12) | 0.40757 (12) | 0.0323 (3) | |
N1 | 0.48905 (16) | 0.40601 (15) | 0.35526 (15) | 0.0277 (3) | |
N2 | 0.79630 (15) | 0.28474 (13) | 0.22927 (13) | 0.0246 (3) | |
N3 | 0.66719 (17) | 0.52094 (15) | 0.19333 (15) | 0.0358 (4) | |
C1 | 0.2810 (2) | 0.2390 (2) | 0.4858 (2) | 0.0449 (5) | |
C2 | 0.1464 (3) | 0.2189 (3) | 0.5632 (2) | 0.0583 (7) | |
H2A | 0.1443 | 0.1678 | 0.6299 | 0.070* | |
C3 | 0.0152 (3) | 0.2755 (3) | 0.5402 (2) | 0.0573 (7) | |
H3A | −0.0785 | 0.2634 | 0.5924 | 0.069* | |
C4 | 0.0174 (2) | 0.3490 (2) | 0.4434 (2) | 0.0485 (6) | |
H4A | −0.0733 | 0.3880 | 0.4282 | 0.058* | |
C5 | 0.1560 (2) | 0.3646 (2) | 0.36861 (19) | 0.0370 (5) | |
C6 | 0.2916 (2) | 0.31110 (18) | 0.38644 (17) | 0.0315 (4) | |
C7 | 0.4403 (2) | 0.32953 (18) | 0.30107 (17) | 0.0309 (4) | |
C8 | 0.86123 (19) | 0.24379 (17) | 0.09447 (16) | 0.0280 (4) | |
H8A | 0.8268 | 0.3173 | 0.0509 | 0.034* | |
H8B | 0.8212 | 0.1771 | 0.0792 | 0.034* | |
C9 | 1.03733 (19) | 0.19106 (16) | 0.03916 (16) | 0.0250 (4) | |
C10 | 1.1236 (2) | 0.22336 (17) | 0.09620 (17) | 0.0296 (4) | |
H10A | 1.0727 | 0.2797 | 0.1720 | 0.035* | |
C11 | 1.2842 (2) | 0.17395 (19) | 0.04339 (18) | 0.0341 (4) | |
H11A | 1.3419 | 0.1964 | 0.0836 | 0.041* | |
C12 | 1.3599 (2) | 0.09219 (18) | −0.06744 (19) | 0.0358 (5) | |
H12A | 1.4693 | 0.0584 | −0.1033 | 0.043* | |
C13 | 1.2756 (2) | 0.06030 (19) | −0.12524 (19) | 0.0393 (5) | |
H13A | 1.3270 | 0.0049 | −0.2017 | 0.047* | |
C14 | 1.1147 (2) | 0.10908 (18) | −0.07202 (18) | 0.0336 (4) | |
H14A | 1.0575 | 0.0859 | −0.1123 | 0.040* | |
C15 | 0.8149 (2) | 0.18153 (18) | 0.30902 (18) | 0.0351 (4) | |
H15A | 0.9229 | 0.1261 | 0.2767 | 0.053* | |
H15B | 0.7497 | 0.1313 | 0.3084 | 0.053* | |
H15C | 0.7842 | 0.2184 | 0.3951 | 0.053* | |
C16 | 0.5493 (2) | 0.56887 (19) | 0.14191 (18) | 0.0382 (5) | |
H16A | 0.4917 | 0.5083 | 0.1535 | 0.046* | |
H16B | 0.6010 | 0.5705 | 0.0506 | 0.046* | |
C17 | 0.4345 (2) | 0.70157 (17) | 0.20021 (17) | 0.0290 (4) | |
C18 | 0.3442 (2) | 0.76890 (19) | 0.13718 (19) | 0.0360 (5) | |
H18A | 0.3538 | 0.7308 | 0.0604 | 0.043* | |
C19 | 0.2409 (2) | 0.8908 (2) | 0.1858 (2) | 0.0402 (5) | |
H19A | 0.1796 | 0.9355 | 0.1426 | 0.048* | |
C20 | 0.2266 (2) | 0.9478 (2) | 0.2971 (2) | 0.0414 (5) | |
H20A | 0.1568 | 1.0319 | 0.3297 | 0.050* | |
C21 | 0.3144 (2) | 0.88166 (19) | 0.36020 (18) | 0.0399 (5) | |
H21A | 0.3047 | 0.9202 | 0.4368 | 0.048* | |
C22 | 0.4176 (2) | 0.75831 (18) | 0.31215 (18) | 0.0344 (4) | |
H22A | 0.4767 | 0.7130 | 0.3569 | 0.041* | |
C23 | 0.7939 (3) | 0.5743 (2) | 0.1510 (3) | 0.0603 (7) | |
H23A | 0.8498 | 0.5537 | 0.0599 | 0.091* | |
H23B | 0.8646 | 0.5376 | 0.1925 | 0.091* | |
H23C | 0.7516 | 0.6673 | 0.1724 | 0.091* | |
H1A | 0.429 (2) | 0.442 (2) | 0.427 (2) | 0.038 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
P1 | 0.0173 (2) | 0.0247 (2) | 0.0261 (2) | −0.00350 (17) | −0.00496 (17) | −0.00334 (17) |
F1 | 0.0611 (9) | 0.0976 (12) | 0.0788 (11) | −0.0319 (9) | −0.0460 (8) | 0.0389 (9) |
F2 | 0.0449 (7) | 0.0539 (8) | 0.0632 (9) | −0.0087 (6) | −0.0301 (7) | 0.0035 (7) |
O1 | 0.0354 (8) | 0.0614 (10) | 0.0329 (8) | −0.0183 (7) | −0.0068 (6) | −0.0151 (7) |
O2 | 0.0208 (6) | 0.0398 (7) | 0.0315 (7) | −0.0084 (5) | −0.0061 (5) | −0.0112 (6) |
N1 | 0.0182 (7) | 0.0342 (8) | 0.0262 (8) | −0.0076 (6) | −0.0044 (6) | −0.0074 (7) |
N2 | 0.0206 (7) | 0.0242 (7) | 0.0231 (7) | −0.0022 (6) | −0.0064 (6) | 0.0009 (6) |
N3 | 0.0259 (8) | 0.0294 (8) | 0.0446 (10) | −0.0035 (7) | −0.0107 (7) | 0.0096 (7) |
C1 | 0.0398 (12) | 0.0603 (14) | 0.0426 (12) | −0.0222 (11) | −0.0200 (10) | 0.0059 (11) |
C2 | 0.0607 (16) | 0.0738 (18) | 0.0467 (14) | −0.0402 (14) | −0.0133 (12) | 0.0104 (13) |
C3 | 0.0415 (13) | 0.0695 (17) | 0.0565 (15) | −0.0329 (13) | −0.0022 (11) | −0.0100 (13) |
C4 | 0.0249 (10) | 0.0540 (14) | 0.0626 (15) | −0.0107 (10) | −0.0140 (10) | −0.0199 (12) |
C5 | 0.0305 (10) | 0.0391 (11) | 0.0407 (11) | −0.0086 (8) | −0.0152 (9) | −0.0073 (9) |
C6 | 0.0242 (9) | 0.0382 (10) | 0.0320 (10) | −0.0110 (8) | −0.0100 (8) | −0.0080 (8) |
C7 | 0.0229 (9) | 0.0361 (10) | 0.0314 (10) | −0.0061 (8) | −0.0110 (8) | −0.0053 (8) |
C8 | 0.0242 (9) | 0.0297 (9) | 0.0241 (9) | −0.0045 (7) | −0.0065 (7) | −0.0026 (7) |
C9 | 0.0220 (8) | 0.0247 (9) | 0.0249 (9) | −0.0068 (7) | −0.0062 (7) | 0.0030 (7) |
C10 | 0.0291 (9) | 0.0305 (9) | 0.0268 (9) | −0.0079 (8) | −0.0100 (8) | 0.0001 (7) |
C11 | 0.0277 (10) | 0.0394 (11) | 0.0377 (11) | −0.0139 (8) | −0.0135 (8) | 0.0078 (9) |
C12 | 0.0202 (9) | 0.0349 (10) | 0.0431 (11) | −0.0073 (8) | −0.0042 (8) | 0.0062 (9) |
C13 | 0.0289 (10) | 0.0364 (11) | 0.0366 (11) | −0.0061 (8) | 0.0008 (8) | −0.0093 (9) |
C14 | 0.0275 (9) | 0.0347 (10) | 0.0341 (10) | −0.0113 (8) | −0.0063 (8) | −0.0046 (8) |
C15 | 0.0328 (10) | 0.0314 (10) | 0.0344 (10) | −0.0050 (8) | −0.0106 (8) | 0.0058 (8) |
C16 | 0.0437 (11) | 0.0322 (10) | 0.0317 (10) | −0.0024 (9) | −0.0158 (9) | 0.0019 (8) |
C17 | 0.0267 (9) | 0.0288 (9) | 0.0299 (9) | −0.0078 (7) | −0.0107 (8) | 0.0061 (8) |
C18 | 0.0359 (10) | 0.0403 (11) | 0.0377 (11) | −0.0136 (9) | −0.0202 (9) | 0.0070 (9) |
C19 | 0.0299 (10) | 0.0413 (12) | 0.0511 (13) | −0.0066 (9) | −0.0222 (9) | 0.0147 (10) |
C20 | 0.0324 (10) | 0.0326 (11) | 0.0463 (12) | −0.0009 (8) | −0.0100 (9) | 0.0057 (9) |
C21 | 0.0426 (12) | 0.0362 (11) | 0.0322 (11) | −0.0068 (9) | −0.0103 (9) | 0.0014 (9) |
C22 | 0.0364 (10) | 0.0304 (10) | 0.0323 (10) | −0.0030 (8) | −0.0158 (8) | 0.0060 (8) |
C23 | 0.0362 (12) | 0.0495 (14) | 0.0853 (19) | −0.0157 (11) | −0.0129 (12) | 0.0317 (13) |
P1—O2 | 1.4796 (13) | C10—H10A | 0.9500 |
P1—N3 | 1.6266 (16) | C11—C12 | 1.385 (3) |
P1—N2 | 1.6405 (14) | C11—H11A | 0.9500 |
P1—N1 | 1.6886 (15) | C12—C13 | 1.377 (3) |
F1—C1 | 1.360 (2) | C12—H12A | 0.9500 |
F2—C5 | 1.359 (2) | C13—C14 | 1.397 (3) |
O1—C7 | 1.219 (2) | C13—H13A | 0.9500 |
N1—C7 | 1.362 (2) | C14—H14A | 0.9500 |
N1—H1A | 0.83 (2) | C15—H15A | 0.9800 |
N2—C8 | 1.463 (2) | C15—H15B | 0.9800 |
N2—C15 | 1.471 (2) | C15—H15C | 0.9800 |
N3—C16 | 1.462 (2) | C16—C17 | 1.524 (3) |
N3—C23 | 1.474 (3) | C16—H16A | 0.9900 |
C1—C6 | 1.383 (3) | C16—H16B | 0.9900 |
C1—C2 | 1.386 (3) | C17—C22 | 1.380 (3) |
C2—C3 | 1.380 (4) | C17—C18 | 1.397 (3) |
C2—H2A | 0.9500 | C18—C19 | 1.385 (3) |
C3—C4 | 1.375 (3) | C18—H18A | 0.9500 |
C3—H3A | 0.9500 | C19—C20 | 1.384 (3) |
C4—C5 | 1.386 (3) | C19—H19A | 0.9500 |
C4—H4A | 0.9500 | C20—C21 | 1.378 (3) |
C5—C6 | 1.383 (3) | C20—H20A | 0.9500 |
C6—C7 | 1.512 (3) | C21—C22 | 1.396 (3) |
C8—C9 | 1.529 (2) | C21—H21A | 0.9500 |
C8—H8A | 0.9900 | C22—H22A | 0.9500 |
C8—H8B | 0.9900 | C23—H23A | 0.9800 |
C9—C14 | 1.389 (2) | C23—H23B | 0.9800 |
C9—C10 | 1.389 (2) | C23—H23C | 0.9800 |
C10—C11 | 1.395 (2) | ||
O2—P1—N3 | 114.81 (8) | C12—C11—C10 | 120.19 (18) |
O2—P1—N2 | 110.54 (7) | C12—C11—H11A | 119.9 |
N3—P1—N2 | 107.66 (8) | C10—C11—H11A | 119.9 |
O2—P1—N1 | 107.11 (8) | C13—C12—C11 | 119.55 (17) |
N3—P1—N1 | 107.24 (8) | C13—C12—H12A | 120.2 |
N2—P1—N1 | 109.34 (8) | C11—C12—H12A | 120.2 |
C7—N1—P1 | 126.79 (13) | C12—C13—C14 | 120.31 (18) |
C7—N1—H1A | 116.4 (14) | C12—C13—H13A | 119.8 |
P1—N1—H1A | 116.5 (14) | C14—C13—H13A | 119.8 |
C8—N2—C15 | 115.44 (14) | C9—C14—C13 | 120.73 (18) |
C8—N2—P1 | 125.15 (12) | C9—C14—H14A | 119.6 |
C15—N2—P1 | 116.63 (11) | C13—C14—H14A | 119.6 |
C16—N3—C23 | 116.19 (17) | N2—C15—H15A | 109.5 |
C16—N3—P1 | 126.13 (14) | N2—C15—H15B | 109.5 |
C23—N3—P1 | 117.53 (14) | H15A—C15—H15B | 109.5 |
F1—C1—C6 | 117.31 (18) | N2—C15—H15C | 109.5 |
F1—C1—C2 | 119.0 (2) | H15A—C15—H15C | 109.5 |
C6—C1—C2 | 123.7 (2) | H15B—C15—H15C | 109.5 |
C3—C2—C1 | 117.9 (2) | N3—C16—C17 | 114.79 (16) |
C3—C2—H2A | 121.1 | N3—C16—H16A | 108.6 |
C1—C2—H2A | 121.1 | C17—C16—H16A | 108.6 |
C4—C3—C2 | 121.4 (2) | N3—C16—H16B | 108.6 |
C4—C3—H3A | 119.3 | C17—C16—H16B | 108.6 |
C2—C3—H3A | 119.3 | H16A—C16—H16B | 107.5 |
C3—C4—C5 | 118.0 (2) | C22—C17—C18 | 118.77 (17) |
C3—C4—H4A | 121.0 | C22—C17—C16 | 122.46 (16) |
C5—C4—H4A | 121.0 | C18—C17—C16 | 118.76 (17) |
F2—C5—C6 | 117.05 (18) | C19—C18—C17 | 120.47 (19) |
F2—C5—C4 | 119.21 (19) | C19—C18—H18A | 119.8 |
C6—C5—C4 | 123.7 (2) | C17—C18—H18A | 119.8 |
C5—C6—C1 | 115.30 (18) | C20—C19—C18 | 120.37 (18) |
C5—C6—C7 | 121.65 (18) | C20—C19—H19A | 119.8 |
C1—C6—C7 | 123.04 (17) | C18—C19—H19A | 119.8 |
O1—C7—N1 | 123.93 (17) | C21—C20—C19 | 119.48 (19) |
O1—C7—C6 | 121.61 (16) | C21—C20—H20A | 120.3 |
N1—C7—C6 | 114.46 (15) | C19—C20—H20A | 120.3 |
N2—C8—C9 | 112.58 (14) | C20—C21—C22 | 120.33 (19) |
N2—C8—H8A | 109.1 | C20—C21—H21A | 119.8 |
C9—C8—H8A | 109.1 | C22—C21—H21A | 119.8 |
N2—C8—H8B | 109.1 | C17—C22—C21 | 120.56 (18) |
C9—C8—H8B | 109.1 | C17—C22—H22A | 119.7 |
H8A—C8—H8B | 107.8 | C21—C22—H22A | 119.7 |
C14—C9—C10 | 118.49 (16) | N3—C23—H23A | 109.5 |
C14—C9—C8 | 119.50 (15) | N3—C23—H23B | 109.5 |
C10—C9—C8 | 122.01 (15) | H23A—C23—H23B | 109.5 |
C9—C10—C11 | 120.73 (17) | N3—C23—H23C | 109.5 |
C9—C10—H10A | 119.6 | H23A—C23—H23C | 109.5 |
C11—C10—H10A | 119.6 | H23B—C23—H23C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2i | 0.83 (2) | 1.92 (2) | 2.752 (2) | 173 (2) |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C23H24F2N3O2P |
Mr | 443.42 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 200 |
a, b, c (Å) | 9.9370 (11), 11.1093 (15), 11.5902 (14) |
α, β, γ (°) | 89.101 (4), 67.826 (4), 71.664 (4) |
V (Å3) | 1116.9 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.16 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART X2S benchtop CCD area-detector diffractometer |
Absorption correction | Multi-scan SADABS (Bruker, 2005) |
Tmin, Tmax | 0.952, 0.968 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13602, 5173, 3851 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.657 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.048, 0.126, 1.03 |
No. of reflections | 5173 |
No. of parameters | 286 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.37, −0.32 |
Computer programs: SMART (Bruker, 2005), SAINT (Bruker, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2i | 0.83 (2) | 1.92 (2) | 2.752 (2) | 173 (2) |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Acknowledgements
Support of this investigation by Ferdowsi University of Mashhad is gratefully acknowledged. The authors wish to thank Bruker AXS, Inc. for the use of one of their SMART X2S benchtop instruments.
References
Bruker (2005). SADABS, SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Pourayoubi, M. & Sabbaghi, F. (2009). J. Chem. Crystallogr. 39, 874–880. Web of Science CSD CrossRef CAS Google Scholar
Sabbaghi, F., Pourayoubi, M., Toghraee, M. & Divjakovic, V. (2010). Acta Cryst. E66, o344. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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Following the previous works about carbacylamidophosphates with a C(═O)NHP(═O) skeleton such as P(O)[NHC(O)C6H4(4-NO2)][N(CH(CH3)2)(CH2C6H5)]2 (Pourayoubi & Sabbaghi, 2009) and P(O)[NHC(O)C6H4(4-NO2)][NHC6H11]2 (Sabbaghi et al., 2010), here, we report the synthesis and crystal structure of title compound, P(O)[NHC(O)C6H3(2,6-F2)][N(CH3)(CH2C6H5)]2. The phosphoryl and carbonyl groups are anti to each other and the phosphorus atom has a slightly distorted tetrahedral configuration (Fig. 1). The bond angles around the P atom are in the range of 107.11 (8)°-114.81 (8)°. The P1–N2 and P1–N3 bond lengths (1.6405 (14) Å and 1.6266 (16) Å) are shorter than the P1–N1 bond (1.6886 (15) Å). The environment of the nitrogen atoms is essentially planar; the angles C23–N3–P1, C16–N3–C23 and C16–N3–P1 are 117.53 (14)°, 116.19 (17)° and 126.13 (14)°, respectively (with average = 119.9°). A similar result was obtained for the bond angles around N2 atom (average = 119.1°). Furthermore, the angle C7–N1–P1 is 126.79 (13)°. The P═O bond length of 1.4796 (13) Å is standard for phosphoramidate compounds. The hydrogen atom of the C(═O)NHP(═O) group is involved in an intermolecular –P═O···H–N– hydrogen bond (see Table 1) to form a centrosymmetric dimeric aggregate.