organic compounds
N,N′-Di-tert-butyl-N′′-(2,6-difluorobenzoyl)phosphoric 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
In the title compound, C15H24F2N3O2P, the phosphoryl and carbonyl groups adopt anti positions relative to each other. The P atom is in a tetrahedral coordination environment and the environment of each N atom is essentially planar. In the crystal, adjacent molecules are linked via N—H⋯O=P and N—H⋯O=C hydrogen bonds into an extended chain parallel to the a axis. The crystal studied was a non-merohedral twin with a minor twin component of 36.4 (1)%.
Related literature
Carbacylamidophosphates with a C(O)NHP(O) skeleton have attracted attention because of their roles as O,O′-donor ligands for metal complexation, see: Gholivand et al. (2010). CELL_NOW (Sheldrick, 2008a) was used to generate the components of the twin.
Experimental
Crystal data
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Refinement
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Data collection: GIS (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008b); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008b); molecular graphics: SHELXTL (Sheldrick, 2008b); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810045927/ng5051sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810045927/ng5051Isup2.hkl
2,6-F2—C6H3C(O)NHP(O)Cl2 has been synthesized from the reaction between 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.
To a solution of 2,6-F2—C6H3C(O)NHP(O)Cl2 (0.500 g, 1.825 mmol) in dry CHCl3, a solution of tert-butylamine (0.534 g, 7.300 mmol) in dry CHCl3 (1:4 mole ratio) was added dropwise at 273 K. After 4 h of stirring, the solvent was evaporated at room temperature. The solid was washed with distilled water. Single crystals were obtained from a solution of the title compound in DMF/CH3OH and n-C7H16 after a slow evaporation at room temperature. Colorless crystal of the title compound was mounted on a Mitogen mount with epoxy and data was collected at 200 K on a Bruker SMART X2S system with Mo Kα radiation. IR (KBr, cm-1): 3351 (NH), 3094 (NH), 2960, 2202, 1665 (C═O), 1474, 1398, 1239 (P═O), 1020, 878 (P—Namine), 779 (P—Namide).
Structure was solved by
and all non-hydrogen atoms were refined as being anisotropic by Fourier full matrix least squares on F2. Hydrogen atoms on various N atoms were found from a Fourier difference map and these N–H distances were then refined with the distance restraint N–H 0.87 (1) angstrom and with Uiso(H) = 1.2 Ueq(N). All other H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with aromatic CH distances of 0.95 Å, Uiso(H) = 1.2Ueq(C) and with methyl C–H distances of 0.98 Å, Uiso(H) = 1.5Ueq(C).Number of reflections and value of Rint were changed to indicate values given in .ABS, .PRP, and .LST files.
Plat 242 ALERT C - comment on C12 low Ueq in comparison to neighbors. C12 is central atom of a tert-butyl group and attached C atoms have higher Ueq values.
Carbacylamidophosphates with a C(O)NHP(O) skeleton have attracted attention because of their roles as the O,O'-donor ligands for metal complexation (Gholivand et al., 2010).
Here, we report on the synthesis and ═O bond length of 1.4761 (16) Å is standard for phosphoramidate compounds.
of title carbacylamidophosphate, P(O)[NHC(O)C6H3(2,6-F2)][NHC(CH3)3]2. The phosphoryl and carbonyl groups adopt the anti position to each other. The P atom has a slightly distorted tetrahedral configuration (Fig. 1). The bond angles around the P atom are in the range of 102.21 (9)° to 116.57 (10)°. The P1–N2 and P1–N3 bonds (1.631 (2) Å and 1.6301 (18) Å) are shorter than the P1–N1 bond (1.7142 (17) Å). The environment of the nitrogen atoms is essentially planar. The PIn the ═ P and N–H···O═C hydrogen bonds, into an extended chain parallel to the a axis. The crystals were found to be twinned.
adjacent molecules are linked via N–H···OCarbacylamidophosphates with a C(O)NHP(O) skeleton have attracted attention because of their roles as the O,O'-donor ligands for metal complexation, see: Gholivand et al. (2010). CELL_NOW (Sheldrick, 2008a) was used to generate the two components of the twin
Data collection: GIS (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008b); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008b); molecular graphics: SHELXTL (Sheldrick, 2008b); software used to prepare material for publication: SHELXTL (Sheldrick, 2008b).Fig. 1. An ORTEP-style plot of title compound. Ellipsoids are given at the 50% probability level. |
C15H24F2N3O2P | Z = 2 |
Mr = 347.34 | F(000) = 368 |
Triclinic, P1 | Dx = 1.260 Mg m−3 |
a = 9.8142 (12) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 10.2886 (13) Å | Cell parameters from 2837 reflections |
c = 10.6091 (16) Å | θ = 2.2–27.9° |
α = 117.171 (4)° | µ = 0.18 mm−1 |
β = 98.636 (4)° | T = 200 K |
γ = 97.988 (3)° | Block, colorless |
V = 915.6 (2) Å3 | 0.30 × 0.25 × 0.20 mm |
Bruker SMART X2S benchtop CCD area-detector diffractometer | 4225 independent reflections |
Radiation source: micro focus sealed tube | 3525 reflections with I > 2σ(I) |
Doubly curved silicon crystal monochromator | Rint = 0.057 |
φ and ω scans | θmax = 27.9°, θmin = 2.2° |
Absorption correction: multi-scan (TWINABS; Sheldrick, 2008a) | h = −12→12 |
Tmin = 0.948, Tmax = 0.965 | k = −13→12 |
7847 measured reflections | l = 0→13 |
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)] = 0.049 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.121 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0548P)2 + 0.3384P] where P = (Fo2 + 2Fc2)/3 |
4225 reflections | (Δ/σ)max = 0.007 |
224 parameters | Δρmax = 0.35 e Å−3 |
3 restraints | Δρmin = −0.27 e Å−3 |
C15H24F2N3O2P | γ = 97.988 (3)° |
Mr = 347.34 | V = 915.6 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.8142 (12) Å | Mo Kα radiation |
b = 10.2886 (13) Å | µ = 0.18 mm−1 |
c = 10.6091 (16) Å | T = 200 K |
α = 117.171 (4)° | 0.30 × 0.25 × 0.20 mm |
β = 98.636 (4)° |
Bruker SMART X2S benchtop CCD area-detector diffractometer | 4225 independent reflections |
Absorption correction: multi-scan (TWINABS; Sheldrick, 2008a) | 3525 reflections with I > 2σ(I) |
Tmin = 0.948, Tmax = 0.965 | Rint = 0.057 |
7847 measured reflections |
R[F2 > 2σ(F2)] = 0.049 | 3 restraints |
wR(F2) = 0.121 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.35 e Å−3 |
4225 reflections | Δρmin = −0.27 e Å−3 |
224 parameters |
Experimental. Data refinement indicated a twin system and program Cell_Now (Sheldrick, 2008) was used to generate the two components of the twin (63.6 (1)/36.4 ratio). Data was integrated using SAINT and corrected for absorption using TWINABS (Shelrick, 2008). |
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 | 0.18621 (6) | 0.39181 (6) | 0.41180 (6) | 0.02191 (14) | |
F1 | 0.4134 (2) | 0.6847 (2) | 0.94162 (17) | 0.0611 (5) | |
F2 | 0.23506 (19) | 0.89470 (17) | 0.66107 (18) | 0.0523 (4) | |
O1 | 0.45094 (16) | 0.62402 (19) | 0.64132 (18) | 0.0363 (4) | |
O2 | 0.03152 (16) | 0.32970 (16) | 0.36977 (17) | 0.0305 (4) | |
N1 | 0.20980 (18) | 0.55903 (19) | 0.56848 (19) | 0.0241 (4) | |
H1N | 0.1375 (17) | 0.592 (3) | 0.595 (3) | 0.029* | |
N2 | 0.2528 (2) | 0.4227 (2) | 0.29337 (19) | 0.0276 (4) | |
H2N | 0.3378 (14) | 0.411 (3) | 0.293 (3) | 0.033* | |
N3 | 0.28600 (19) | 0.2910 (2) | 0.4441 (2) | 0.0260 (4) | |
H3N | 0.3739 (13) | 0.318 (3) | 0.449 (3) | 0.031* | |
C1 | 0.3611 (3) | 0.7959 (3) | 0.9332 (3) | 0.0404 (6) | |
C2 | 0.3480 (4) | 0.9159 (4) | 1.0587 (3) | 0.0597 (9) | |
H2A | 0.3767 | 0.9216 | 1.1511 | 0.072* | |
C3 | 0.2927 (4) | 1.0271 (4) | 1.0475 (4) | 0.0675 (10) | |
H3A | 0.2807 | 1.1087 | 1.1327 | 0.081* | |
C4 | 0.2544 (3) | 1.0216 (3) | 0.9142 (4) | 0.0593 (9) | |
H4A | 0.2183 | 1.0995 | 0.9069 | 0.071* | |
C5 | 0.2699 (3) | 0.8998 (3) | 0.7919 (3) | 0.0386 (6) | |
C6 | 0.3228 (2) | 0.7840 (2) | 0.7961 (2) | 0.0283 (5) | |
C7 | 0.3352 (2) | 0.6488 (2) | 0.6613 (2) | 0.0243 (4) | |
C8 | 0.1874 (3) | 0.4811 (3) | 0.1991 (2) | 0.0353 (5) | |
C9 | 0.1621 (4) | 0.6356 (3) | 0.2928 (3) | 0.0580 (9) | |
H9A | 0.2518 | 0.7042 | 0.3598 | 0.087* | |
H9B | 0.0940 | 0.6275 | 0.3491 | 0.087* | |
H9C | 0.1241 | 0.6747 | 0.2297 | 0.087* | |
C10 | 0.0477 (3) | 0.3691 (4) | 0.0967 (3) | 0.0569 (8) | |
H10A | −0.0227 | 0.3709 | 0.1536 | 0.085* | |
H10B | 0.0640 | 0.2677 | 0.0478 | 0.085* | |
H10C | 0.0126 | 0.3972 | 0.0234 | 0.085* | |
C11 | 0.2913 (4) | 0.4907 (4) | 0.1095 (3) | 0.0535 (7) | |
H11A | 0.3809 | 0.5611 | 0.1750 | 0.080* | |
H11B | 0.2515 | 0.5263 | 0.0439 | 0.080* | |
H11C | 0.3084 | 0.3911 | 0.0518 | 0.080* | |
C12 | 0.2566 (3) | 0.1929 (3) | 0.5095 (3) | 0.0336 (5) | |
C13 | 0.1325 (3) | 0.0588 (3) | 0.4049 (4) | 0.0579 (8) | |
H13A | 0.1533 | 0.0073 | 0.3088 | 0.087* | |
H13B | 0.0460 | 0.0945 | 0.3956 | 0.087* | |
H13C | 0.1188 | −0.0112 | 0.4433 | 0.087* | |
C14 | 0.2251 (5) | 0.2791 (4) | 0.6581 (4) | 0.0677 (10) | |
H14A | 0.3057 | 0.3642 | 0.7232 | 0.102* | |
H14B | 0.2093 | 0.2123 | 0.6997 | 0.102* | |
H14C | 0.1400 | 0.3165 | 0.6470 | 0.102* | |
C15 | 0.3893 (3) | 0.1343 (4) | 0.5243 (4) | 0.0525 (7) | |
H15A | 0.4090 | 0.0802 | 0.4280 | 0.079* | |
H15B | 0.3742 | 0.0661 | 0.5645 | 0.079* | |
H15C | 0.4701 | 0.2191 | 0.5898 | 0.079* |
U11 | U22 | U33 | U12 | U13 | U23 | |
P1 | 0.0176 (2) | 0.0218 (2) | 0.0242 (3) | 0.00825 (19) | 0.00585 (19) | 0.0082 (2) |
F1 | 0.0786 (14) | 0.0696 (11) | 0.0426 (9) | 0.0253 (10) | 0.0115 (8) | 0.0322 (9) |
F2 | 0.0626 (11) | 0.0417 (8) | 0.0565 (10) | 0.0198 (8) | 0.0103 (8) | 0.0264 (8) |
O1 | 0.0199 (7) | 0.0431 (9) | 0.0381 (9) | 0.0093 (7) | 0.0107 (7) | 0.0117 (7) |
O2 | 0.0185 (7) | 0.0288 (7) | 0.0359 (8) | 0.0083 (6) | 0.0062 (6) | 0.0083 (7) |
N1 | 0.0179 (8) | 0.0251 (8) | 0.0258 (8) | 0.0100 (7) | 0.0080 (7) | 0.0073 (7) |
N2 | 0.0238 (9) | 0.0369 (10) | 0.0278 (9) | 0.0147 (8) | 0.0093 (8) | 0.0174 (8) |
N3 | 0.0190 (9) | 0.0280 (9) | 0.0367 (10) | 0.0111 (7) | 0.0116 (8) | 0.0173 (8) |
C1 | 0.0370 (14) | 0.0419 (13) | 0.0338 (12) | 0.0027 (11) | 0.0089 (10) | 0.0131 (11) |
C2 | 0.0572 (19) | 0.067 (2) | 0.0259 (13) | 0.0018 (16) | 0.0120 (12) | 0.0022 (13) |
C3 | 0.061 (2) | 0.0446 (17) | 0.0517 (18) | 0.0063 (15) | 0.0210 (16) | −0.0140 (14) |
C4 | 0.0560 (19) | 0.0317 (13) | 0.067 (2) | 0.0160 (13) | 0.0164 (16) | 0.0030 (14) |
C5 | 0.0337 (13) | 0.0274 (11) | 0.0418 (13) | 0.0036 (10) | 0.0092 (11) | 0.0072 (10) |
C6 | 0.0205 (9) | 0.0265 (10) | 0.0276 (10) | 0.0022 (8) | 0.0075 (8) | 0.0052 (8) |
C7 | 0.0210 (10) | 0.0264 (10) | 0.0252 (10) | 0.0067 (8) | 0.0083 (8) | 0.0112 (8) |
C8 | 0.0437 (14) | 0.0373 (12) | 0.0308 (11) | 0.0163 (11) | 0.0077 (10) | 0.0198 (10) |
C9 | 0.087 (3) | 0.0501 (16) | 0.0516 (16) | 0.0393 (17) | 0.0195 (16) | 0.0298 (14) |
C10 | 0.0501 (18) | 0.0689 (19) | 0.0498 (16) | 0.0046 (14) | −0.0106 (13) | 0.0366 (15) |
C11 | 0.068 (2) | 0.0642 (18) | 0.0426 (15) | 0.0200 (16) | 0.0189 (14) | 0.0346 (14) |
C12 | 0.0338 (13) | 0.0360 (12) | 0.0445 (13) | 0.0173 (10) | 0.0172 (10) | 0.0259 (11) |
C13 | 0.0462 (18) | 0.0477 (16) | 0.087 (2) | 0.0019 (13) | 0.0107 (16) | 0.0424 (17) |
C14 | 0.108 (3) | 0.075 (2) | 0.0601 (19) | 0.055 (2) | 0.052 (2) | 0.0477 (18) |
C15 | 0.0503 (17) | 0.0584 (17) | 0.0721 (19) | 0.0294 (14) | 0.0168 (15) | 0.0456 (16) |
P1—O2 | 1.4761 (16) | C8—C9 | 1.522 (4) |
P1—N3 | 1.6301 (18) | C8—C10 | 1.536 (4) |
P1—N2 | 1.631 (2) | C9—H9A | 0.9800 |
P1—N1 | 1.7142 (17) | C9—H9B | 0.9800 |
F1—C1 | 1.351 (3) | C9—H9C | 0.9800 |
F2—C5 | 1.353 (3) | C10—H10A | 0.9800 |
O1—C7 | 1.226 (2) | C10—H10B | 0.9800 |
N1—C7 | 1.352 (3) | C10—H10C | 0.9800 |
N1—H1N | 0.858 (10) | C11—H11A | 0.9800 |
N2—C8 | 1.495 (3) | C11—H11B | 0.9800 |
N2—H2N | 0.860 (10) | C11—H11C | 0.9800 |
N3—C12 | 1.485 (3) | C12—C14 | 1.520 (4) |
N3—H3N | 0.856 (10) | C12—C15 | 1.526 (3) |
C1—C2 | 1.381 (4) | C12—C13 | 1.532 (4) |
C1—C6 | 1.390 (4) | C13—H13A | 0.9800 |
C2—C3 | 1.377 (5) | C13—H13B | 0.9800 |
C2—H2A | 0.9500 | C13—H13C | 0.9800 |
C3—C4 | 1.381 (6) | C14—H14A | 0.9800 |
C3—H3A | 0.9500 | C14—H14B | 0.9800 |
C4—C5 | 1.380 (4) | C14—H14C | 0.9800 |
C4—H4A | 0.9500 | C15—H15A | 0.9800 |
C5—C6 | 1.381 (3) | C15—H15B | 0.9800 |
C6—C7 | 1.509 (3) | C15—H15C | 0.9800 |
C8—C11 | 1.517 (4) | ||
O2—P1—N3 | 116.57 (10) | C8—C9—H9A | 109.5 |
O2—P1—N2 | 115.98 (9) | C8—C9—H9B | 109.5 |
N3—P1—N2 | 102.21 (9) | H9A—C9—H9B | 109.5 |
O2—P1—N1 | 103.22 (8) | C8—C9—H9C | 109.5 |
N3—P1—N1 | 109.37 (9) | H9A—C9—H9C | 109.5 |
N2—P1—N1 | 109.43 (10) | H9B—C9—H9C | 109.5 |
C7—N1—P1 | 126.27 (14) | C8—C10—H10A | 109.5 |
C7—N1—H1N | 113.8 (16) | C8—C10—H10B | 109.5 |
P1—N1—H1N | 119.9 (16) | H10A—C10—H10B | 109.5 |
C8—N2—P1 | 127.01 (16) | C8—C10—H10C | 109.5 |
C8—N2—H2N | 118.1 (19) | H10A—C10—H10C | 109.5 |
P1—N2—H2N | 114.6 (19) | H10B—C10—H10C | 109.5 |
C12—N3—P1 | 128.21 (15) | C8—C11—H11A | 109.5 |
C12—N3—H3N | 114.1 (19) | C8—C11—H11B | 109.5 |
P1—N3—H3N | 114.8 (18) | H11A—C11—H11B | 109.5 |
F1—C1—C2 | 119.7 (3) | C8—C11—H11C | 109.5 |
F1—C1—C6 | 117.6 (2) | H11A—C11—H11C | 109.5 |
C2—C1—C6 | 122.7 (3) | H11B—C11—H11C | 109.5 |
C3—C2—C1 | 118.8 (3) | N3—C12—C14 | 111.4 (2) |
C3—C2—H2A | 120.6 | N3—C12—C15 | 106.2 (2) |
C1—C2—H2A | 120.6 | C14—C12—C15 | 110.4 (2) |
C2—C3—C4 | 120.9 (3) | N3—C12—C13 | 109.3 (2) |
C2—C3—H3A | 119.5 | C14—C12—C13 | 110.8 (3) |
C4—C3—H3A | 119.5 | C15—C12—C13 | 108.5 (2) |
C3—C4—C5 | 118.3 (3) | C12—C13—H13A | 109.5 |
C3—C4—H4A | 120.9 | C12—C13—H13B | 109.5 |
C5—C4—H4A | 120.9 | H13A—C13—H13B | 109.5 |
F2—C5—C4 | 118.7 (3) | C12—C13—H13C | 109.5 |
F2—C5—C6 | 117.9 (2) | H13A—C13—H13C | 109.5 |
C4—C5—C6 | 123.4 (3) | H13B—C13—H13C | 109.5 |
C5—C6—C1 | 116.0 (2) | C12—C14—H14A | 109.5 |
C5—C6—C7 | 123.1 (2) | C12—C14—H14B | 109.5 |
C1—C6—C7 | 120.9 (2) | H14A—C14—H14B | 109.5 |
O1—C7—N1 | 124.00 (18) | C12—C14—H14C | 109.5 |
O1—C7—C6 | 121.48 (18) | H14A—C14—H14C | 109.5 |
N1—C7—C6 | 114.52 (17) | H14B—C14—H14C | 109.5 |
N2—C8—C11 | 106.6 (2) | C12—C15—H15A | 109.5 |
N2—C8—C9 | 110.46 (19) | C12—C15—H15B | 109.5 |
C11—C8—C9 | 110.4 (2) | H15A—C15—H15B | 109.5 |
N2—C8—C10 | 109.0 (2) | C12—C15—H15C | 109.5 |
C11—C8—C10 | 109.5 (2) | H15A—C15—H15C | 109.5 |
C9—C8—C10 | 110.8 (2) | H15B—C15—H15C | 109.5 |
O2—P1—N1—C7 | 169.82 (18) | C4—C5—C6—C7 | 178.0 (2) |
N3—P1—N1—C7 | 45.1 (2) | F1—C1—C6—C5 | −180.0 (2) |
N2—P1—N1—C7 | −66.1 (2) | C2—C1—C6—C5 | −0.3 (4) |
O2—P1—N2—C8 | 38.0 (2) | F1—C1—C6—C7 | 2.0 (3) |
N3—P1—N2—C8 | 165.93 (18) | C2—C1—C6—C7 | −178.3 (2) |
N1—P1—N2—C8 | −78.2 (2) | P1—N1—C7—O1 | 3.1 (3) |
O2—P1—N3—C12 | −33.9 (2) | P1—N1—C7—C6 | −175.92 (16) |
N2—P1—N3—C12 | −161.48 (19) | C5—C6—C7—O1 | 114.8 (3) |
N1—P1—N3—C12 | 82.6 (2) | C1—C6—C7—O1 | −67.3 (3) |
F1—C1—C2—C3 | −179.2 (3) | C5—C6—C7—N1 | −66.1 (3) |
C6—C1—C2—C3 | 1.1 (5) | C1—C6—C7—N1 | 111.8 (2) |
C1—C2—C3—C4 | −1.8 (5) | P1—N2—C8—C11 | 179.62 (18) |
C2—C3—C4—C5 | 1.5 (5) | P1—N2—C8—C9 | 59.7 (3) |
C3—C4—C5—F2 | −178.8 (3) | P1—N2—C8—C10 | −62.3 (3) |
C3—C4—C5—C6 | −0.6 (4) | P1—N3—C12—C14 | −55.9 (3) |
F2—C5—C6—C1 | 178.2 (2) | P1—N3—C12—C15 | −176.14 (19) |
C4—C5—C6—C1 | 0.0 (4) | P1—N3—C12—C13 | 67.0 (3) |
F2—C5—C6—C7 | −3.8 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2i | 0.86 (1) | 1.96 (1) | 2.808 (2) | 172 (2) |
N2—H2N···O1ii | 0.86 (1) | 2.22 (1) | 3.042 (2) | 160 (2) |
N3—H3N···O1ii | 0.86 (1) | 2.22 (2) | 3.008 (2) | 152 (2) |
Symmetry codes: (i) −x, −y+1, −z+1; (ii) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C15H24F2N3O2P |
Mr | 347.34 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 200 |
a, b, c (Å) | 9.8142 (12), 10.2886 (13), 10.6091 (16) |
α, β, γ (°) | 117.171 (4), 98.636 (4), 97.988 (3) |
V (Å3) | 915.6 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.18 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Bruker SMART X2S benchtop CCD area-detector |
Absorption correction | Multi-scan (TWINABS; Sheldrick, 2008a) |
Tmin, Tmax | 0.948, 0.965 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7847, 4225, 3525 |
Rint | 0.057 |
(sin θ/λ)max (Å−1) | 0.658 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.049, 0.121, 1.05 |
No. of reflections | 4225 |
No. of parameters | 224 |
No. of restraints | 3 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.35, −0.27 |
Computer programs: GIS (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008b), SHELXL97 (Sheldrick, 2008b), SHELXTL (Sheldrick, 2008b).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2i | 0.858 (10) | 1.956 (11) | 2.808 (2) | 172 (2) |
N2—H2N···O1ii | 0.860 (10) | 2.219 (13) | 3.042 (2) | 160 (2) |
N3—H3N···O1ii | 0.856 (10) | 2.224 (15) | 3.008 (2) | 152 (2) |
Symmetry codes: (i) −x, −y+1, −z+1; (ii) −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. (Madison, WI) for the use of one of their SMART X2S benchtop instruments.
References
Bruker (2009). GIS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Gholivand, K., Mahzouni, H. R., Pourayoubi, M. & Amiri, S. (2010). Inorg. Chim. Acta, 363, 2318–2324. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (2008a). CELL_NOW and TWINABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008b). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS 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.
Carbacylamidophosphates with a C(O)NHP(O) skeleton have attracted attention because of their roles as the O,O'-donor ligands for metal complexation (Gholivand et al., 2010).
Here, we report on the synthesis and crystal structure of title carbacylamidophosphate, P(O)[NHC(O)C6H3(2,6-F2)][NHC(CH3)3]2. The phosphoryl and carbonyl groups adopt the anti position to each other. The P atom has a slightly distorted tetrahedral configuration (Fig. 1). The bond angles around the P atom are in the range of 102.21 (9)° to 116.57 (10)°. The P1–N2 and P1–N3 bonds (1.631 (2) Å and 1.6301 (18) Å) are shorter than the P1–N1 bond (1.7142 (17) Å). The environment of the nitrogen atoms is essentially planar. The P═O bond length of 1.4761 (16) Å is standard for phosphoramidate compounds.
In the crystal structure, adjacent molecules are linked via N–H···O═ P and N–H···O═C hydrogen bonds, into an extended chain parallel to the a axis. The crystals were found to be twinned.