organic compounds
O-Phenyl (tert-butylamido)(p-tolylamido)phosphinate
aDepartment of Chemistry, Ferdowsi University of Mashhad, Mashhad, 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 molecule, C17H23N2O2P, the P atom has a distorted tetrahedral environment. The P—N bond to the tolylamido fragment is 1.642 (4) Å while that to the butylamido fragment is 1.629 (3) Å. The dihedral angle between the two benzene rings is 82.3 (2)°. In the crystal, adjacent molecules are linked via weak N—H⋯(O)P and N—H⋯N hydrogen-bonding interactions into an extended chain parallel to the b axis. The three methyl groups of the tert-butylamido substituent are disordered over two sets of sites with equal occupancies. The crystal studied was found to be a non-merohedral twin with the minor twin component = 23.1 (1)%.
Related literature
For background to mixed-amido phosphinates, see: Pourayoubi et al. (2011a); Sabbaghi et al. (2011). For the sp2 character of the nitrogen atom of the P(=O)N unit and also for its low Lewis-base character in acting as a hydrogen-bond acceptor, see: Toghraee et al. (2011); Pourayoubi et al. (2011b,c). For a description of the Cambridge Structure Database, see: Allen (2002).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: CELL_NOW (Sheldrick, 2008a) and SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008b); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008b); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008b) and enCIFer (Allen et al., 2004).
Supporting information
https://doi.org/10.1107/S1600536811048537/wm2550sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811048537/wm2550Isup2.hkl
To a solution of (C6H5O)(4-CH3C6H4NH)P(O)Cl (1.714 mmol) in chloroform, a solution of tert-butylamine (3.428 mmol) in chloroform was added at 273 K. After 5 h stirring, the solvent was removed in vacuum and the solid product was washed with distilled water. Single crystals were obtained from a mixture of CH3CN/CHCl3 at room temperature.
The investigated crystal was found to be a two-component rotational twin. The data for both components were integrated using SAINT and scaled with TWINABS. Final
was done using a HKLF5 file generated by TWINABS with an appropriate BASF parameter (0.23089 (10)). The three methyl groups of the tert-butyl moiety were refined as being disordered in a 0.5:0.5 ratio. All H atoms were placed geometrically using a riding model. Their positions were constrained relative to their parent atom using the appropriate HFIX command in SHELXL97 (d(C—H) = 0.98 Å for methyl H atoms, d(C—H) = 0.95 Å for aromatic H atoms and d(N—H) = 0.88 Å for amide H atoms, with Uiso(H) = 1.2Ueq(C,N) for aromatic and amide H atoms and Uiso(H) = 1.5Ueq(C) for methyl H atoms).Following our previous work on the synthesis of mixed-amido phosphinates containing a P(O)(O)(NH)(NH) skeleton (Pourayoubi et al., 2011a), we report here on the synthesis and
of the title compound, P(O)[OC6H5][NHC6H4(4-CH3)][NHC(CH3)3] (Fig. 1).The P═O, P—O and P—N bond lengths and P—O—C and P—N—C bond angles are within the expected values (Sabbaghi et al., 2011). The P atom has a distorted tetrahedral conformation with the bond angles in the range of 96.76 (17)° [O2–P1–N2] to 117.03 (17)° [O1–P1–N2]. The P1—N1 bond (with length of 1.642 (4) Å) is slightly longer than the P1—N2 bond (1.629 (3) Å). The dihedral angle between the phenyl rings of the OC6H5 and NHC6H4(4-CH3) moieties is 82.3 (2)°.
In the ═O)N unit usually adopts an sp2 character (which is reflected in the bond angles at the N atom) and usually does not act as an acceptor in hydrogen bonding interactions. Therefore, the N—H···N—P contact in the crystal packing may rather be attributed to the assembly of the molecules with respect to one another.
the molecules are linked by weak N—H···(O)P and N—H···N hydrogen bonding interactions (Table 1) into an extended chain along [010] (Fig. 2). As illustrated for phosphoramidates by Toghraee et al. (2011) and Pourayoubi et al. (2011b,c) by examining all deposited phosphoramidates in the Cambridge Structural Database (CSD, Version 5.32, May 2011 update; Allen, 2002), the N atom of the P(For background to mixed-amido phosphinates, see: Pourayoubi et al. (2011a); Sabbaghi et al. (2011). For the sp2 character of the nitrogen atom of the P(═O)N unit and also for its low Lewis-base character in acting as a hydrogen-bond acceptor, see: Toghraee et al. (2011); Pourayoubi et al. (2011b,c). For a description of the Cambridge Structure Database, see: Allen (2002).
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: CELL_NOW (Sheldrick, 2008a) and SAINT (Bruker, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008b); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008b); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008b) and enCIFer (Allen et al., 2004).C17H23N2O2P | F(000) = 680 |
Mr = 318.34 | Dx = 1.274 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2700 reflections |
a = 11.412 (5) Å | θ = 2.5–27.3° |
b = 9.519 (4) Å | µ = 0.18 mm−1 |
c = 15.768 (6) Å | T = 100 K |
β = 104.332 (5)° | Block, colourless |
V = 1659.5 (12) Å3 | 0.20 × 0.18 × 0.15 mm |
Z = 4 |
Bruker APEX CCD diffractometer | 18075 independent reflections |
Radiation source: fine-focus sealed tube | 2497 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.087 |
φ and ω scans | θmax = 28.3°, θmin = 2.0° |
Absorption correction: multi-scan (TWINABS; Sheldrick, 2008a) | h = −15→14 |
Tmin = 0.966, Tmax = 0.974 | k = 0→12 |
3860 measured reflections | l = 0→20 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.089 | H-atom parameters constrained |
wR(F2) = 0.203 | w = 1/[σ2(Fo2) + (0.032P)2 + 5.6384P] where P = (Fo2 + 2Fc2)/3 |
S = 1.08 | (Δ/σ)max < 0.001 |
3860 reflections | Δρmax = 0.36 e Å−3 |
235 parameters | Δρmin = −0.42 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008b), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0051 (8) |
C17H23N2O2P | V = 1659.5 (12) Å3 |
Mr = 318.34 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 11.412 (5) Å | µ = 0.18 mm−1 |
b = 9.519 (4) Å | T = 100 K |
c = 15.768 (6) Å | 0.20 × 0.18 × 0.15 mm |
β = 104.332 (5)° |
Bruker APEX CCD diffractometer | 18075 independent reflections |
Absorption correction: multi-scan (TWINABS; Sheldrick, 2008a) | 2497 reflections with I > 2σ(I) |
Tmin = 0.966, Tmax = 0.974 | Rint = 0.087 |
3860 measured reflections |
R[F2 > 2σ(F2)] = 0.089 | 0 restraints |
wR(F2) = 0.203 | H-atom parameters constrained |
S = 1.08 | Δρmax = 0.36 e Å−3 |
3860 reflections | Δρmin = −0.42 e Å−3 |
235 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 | Occ. (<1) | |
C1 | −0.3828 (4) | 0.3138 (7) | 0.1636 (3) | 0.0484 (14) | |
H1A | −0.4241 | 0.3213 | 0.1014 | 0.073* | |
H1B | −0.4038 | 0.3950 | 0.1951 | 0.073* | |
H1C | −0.4083 | 0.2273 | 0.1876 | 0.073* | |
C2 | −0.2482 (4) | 0.3104 (6) | 0.1738 (3) | 0.0375 (11) | |
C3 | −0.1876 (4) | 0.1854 (5) | 0.1663 (2) | 0.0330 (10) | |
H3 | −0.2329 | 0.1008 | 0.1548 | 0.040* | |
C4 | −0.0631 (4) | 0.1802 (5) | 0.1750 (2) | 0.0293 (9) | |
H4 | −0.0249 | 0.0933 | 0.1688 | 0.035* | |
C5 | 0.0049 (3) | 0.3026 (5) | 0.1927 (2) | 0.0264 (9) | |
C6 | −0.0545 (3) | 0.4307 (5) | 0.1998 (2) | 0.0288 (9) | |
H6 | −0.0095 | 0.5155 | 0.2113 | 0.035* | |
C7 | −0.1785 (4) | 0.4320 (5) | 0.1901 (2) | 0.0338 (10) | |
H7 | −0.2174 | 0.5189 | 0.1948 | 0.041* | |
C8 | 0.2197 (4) | 0.1078 (5) | 0.0673 (3) | 0.0323 (10) | |
C9 | 0.1197 (4) | 0.1458 (5) | 0.0015 (3) | 0.0362 (11) | |
H9 | 0.0411 | 0.1470 | 0.0118 | 0.043* | |
C10 | 0.1373 (5) | 0.1821 (6) | −0.0801 (3) | 0.0449 (12) | |
H10 | 0.0700 | 0.2084 | −0.1261 | 0.054* | |
C11 | 0.2522 (5) | 0.1802 (6) | −0.0946 (3) | 0.0450 (12) | |
H11 | 0.2638 | 0.2068 | −0.1500 | 0.054* | |
C12 | 0.3495 (5) | 0.1395 (6) | −0.0283 (3) | 0.0439 (12) | |
H12 | 0.4277 | 0.1364 | −0.0391 | 0.053* | |
C13 | 0.3357 (4) | 0.1030 (5) | 0.0541 (3) | 0.0369 (11) | |
H13 | 0.4031 | 0.0757 | 0.0998 | 0.044* | |
C14 | 0.2211 (4) | 0.1101 (5) | 0.3984 (2) | 0.0286 (9) | |
C15 | 0.3531 (8) | 0.0707 (13) | 0.4489 (6) | 0.041 (2) | 0.50 |
H15A | 0.3657 | −0.0303 | 0.4432 | 0.061* | 0.50 |
H15B | 0.3653 | 0.0948 | 0.5109 | 0.061* | 0.50 |
H15C | 0.4108 | 0.1231 | 0.4242 | 0.061* | 0.50 |
C16 | 0.1961 (10) | 0.2594 (11) | 0.4144 (6) | 0.038 (2) | 0.50 |
H16A | 0.2495 | 0.3199 | 0.3905 | 0.058* | 0.50 |
H16B | 0.2105 | 0.2757 | 0.4775 | 0.058* | 0.50 |
H16C | 0.1116 | 0.2811 | 0.3858 | 0.058* | 0.50 |
C17 | 0.1378 (10) | 0.0128 (12) | 0.4394 (6) | 0.043 (2) | 0.50 |
H17A | 0.0529 | 0.0386 | 0.4154 | 0.065* | 0.50 |
H17B | 0.1588 | 0.0247 | 0.5031 | 0.065* | 0.50 |
H17C | 0.1500 | −0.0855 | 0.4251 | 0.065* | 0.50 |
C15' | 0.3377 (8) | 0.1837 (13) | 0.4350 (5) | 0.041 (2) | 0.50 |
H15D | 0.4046 | 0.1256 | 0.4264 | 0.062* | 0.50 |
H15E | 0.3473 | 0.2002 | 0.4977 | 0.062* | 0.50 |
H15F | 0.3378 | 0.2739 | 0.4050 | 0.062* | 0.50 |
C16' | 0.1147 (9) | 0.2038 (12) | 0.4044 (6) | 0.042 (2) | 0.50 |
H16D | 0.1245 | 0.2966 | 0.3802 | 0.063* | 0.50 |
H16E | 0.1123 | 0.2135 | 0.4658 | 0.063* | 0.50 |
H16F | 0.0391 | 0.1613 | 0.3710 | 0.063* | 0.50 |
C17' | 0.2138 (9) | −0.0251 (11) | 0.4441 (5) | 0.034 (2) | 0.50 |
H17D | 0.1421 | −0.0773 | 0.4126 | 0.051* | 0.50 |
H17E | 0.2080 | −0.0063 | 0.5040 | 0.051* | 0.50 |
H17F | 0.2865 | −0.0810 | 0.4457 | 0.051* | 0.50 |
N1 | 0.1321 (3) | 0.3055 (4) | 0.2034 (2) | 0.0272 (8) | |
H1 | 0.1619 | 0.3882 | 0.1951 | 0.033* | |
N2 | 0.2060 (3) | 0.0744 (4) | 0.3037 (2) | 0.0281 (8) | |
H2 | 0.1806 | −0.0109 | 0.2871 | 0.034* | |
O1 | 0.3536 (2) | 0.2436 (3) | 0.24577 (18) | 0.0325 (7) | |
O2 | 0.2020 (2) | 0.0677 (3) | 0.14980 (17) | 0.0304 (7) | |
P1 | 0.23229 (9) | 0.17878 (13) | 0.22865 (6) | 0.0262 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.028 (2) | 0.083 (4) | 0.036 (2) | −0.002 (3) | 0.0118 (19) | −0.001 (3) |
C2 | 0.024 (2) | 0.070 (4) | 0.0189 (19) | −0.006 (2) | 0.0061 (15) | −0.004 (2) |
C3 | 0.029 (2) | 0.048 (3) | 0.0203 (19) | −0.008 (2) | 0.0044 (16) | 0.003 (2) |
C4 | 0.028 (2) | 0.037 (2) | 0.0229 (19) | −0.0024 (19) | 0.0063 (15) | 0.0036 (19) |
C5 | 0.0230 (19) | 0.040 (2) | 0.0163 (17) | 0.0016 (18) | 0.0043 (14) | 0.0045 (17) |
C6 | 0.024 (2) | 0.041 (3) | 0.0214 (19) | −0.0008 (18) | 0.0050 (15) | −0.0012 (18) |
C7 | 0.029 (2) | 0.054 (3) | 0.0192 (19) | 0.008 (2) | 0.0083 (16) | −0.003 (2) |
C8 | 0.038 (2) | 0.038 (3) | 0.022 (2) | −0.001 (2) | 0.0106 (17) | −0.0050 (19) |
C9 | 0.036 (2) | 0.048 (3) | 0.025 (2) | 0.000 (2) | 0.0081 (17) | −0.004 (2) |
C10 | 0.057 (3) | 0.053 (3) | 0.024 (2) | 0.010 (3) | 0.009 (2) | −0.003 (2) |
C11 | 0.063 (3) | 0.051 (3) | 0.027 (2) | −0.002 (3) | 0.022 (2) | −0.008 (2) |
C12 | 0.048 (3) | 0.055 (3) | 0.035 (2) | −0.007 (2) | 0.023 (2) | −0.011 (2) |
C13 | 0.034 (2) | 0.045 (3) | 0.033 (2) | −0.004 (2) | 0.0097 (19) | −0.008 (2) |
C14 | 0.031 (2) | 0.037 (3) | 0.0199 (19) | 0.0019 (19) | 0.0097 (16) | −0.0009 (18) |
C15 | 0.038 (5) | 0.063 (7) | 0.019 (4) | 0.001 (5) | 0.002 (4) | −0.002 (5) |
C16 | 0.047 (6) | 0.049 (6) | 0.023 (4) | 0.000 (5) | 0.015 (4) | 0.006 (4) |
C17 | 0.057 (7) | 0.052 (7) | 0.023 (5) | −0.018 (6) | 0.016 (5) | 0.001 (4) |
C15' | 0.040 (5) | 0.066 (7) | 0.019 (4) | −0.019 (5) | 0.009 (4) | −0.009 (5) |
C16' | 0.041 (5) | 0.063 (7) | 0.024 (4) | 0.021 (5) | 0.012 (4) | −0.004 (4) |
C17' | 0.040 (5) | 0.046 (6) | 0.019 (4) | 0.002 (5) | 0.011 (4) | 0.004 (4) |
N1 | 0.0212 (16) | 0.038 (2) | 0.0229 (16) | −0.0022 (15) | 0.0067 (13) | 0.0015 (15) |
N2 | 0.0318 (18) | 0.035 (2) | 0.0169 (16) | −0.0020 (16) | 0.0045 (13) | −0.0002 (14) |
O1 | 0.0238 (14) | 0.0463 (19) | 0.0275 (15) | −0.0002 (13) | 0.0067 (11) | −0.0013 (14) |
O2 | 0.0316 (15) | 0.0385 (18) | 0.0216 (14) | −0.0021 (13) | 0.0079 (11) | −0.0046 (13) |
P1 | 0.0215 (5) | 0.0383 (6) | 0.0184 (5) | 0.0005 (5) | 0.0045 (4) | −0.0014 (5) |
C1—C2 | 1.506 (6) | C14—C17' | 1.488 (10) |
C1—H1A | 0.9800 | C14—N2 | 1.500 (5) |
C1—H1B | 0.9800 | C14—C16' | 1.528 (10) |
C1—H1C | 0.9800 | C14—C15 | 1.565 (10) |
C2—C7 | 1.391 (7) | C14—C17 | 1.576 (10) |
C2—C3 | 1.396 (7) | C15—H15A | 0.9800 |
C3—C4 | 1.394 (5) | C15—H15B | 0.9800 |
C3—H3 | 0.9500 | C15—H15C | 0.9800 |
C4—C5 | 1.390 (6) | C16—H16A | 0.9800 |
C4—H4 | 0.9500 | C16—H16B | 0.9800 |
C5—C6 | 1.413 (6) | C16—H16C | 0.9800 |
C5—N1 | 1.419 (5) | C17—H17A | 0.9800 |
C6—C7 | 1.386 (5) | C17—H17B | 0.9800 |
C6—H6 | 0.9500 | C17—H17C | 0.9800 |
C7—H7 | 0.9500 | C15'—H15D | 0.9800 |
C8—C9 | 1.386 (6) | C15'—H15E | 0.9800 |
C8—C13 | 1.391 (6) | C15'—H15F | 0.9800 |
C8—O2 | 1.417 (5) | C16'—H16D | 0.9800 |
C9—C10 | 1.395 (6) | C16'—H16E | 0.9800 |
C9—H9 | 0.9500 | C16'—H16F | 0.9800 |
C10—C11 | 1.385 (7) | C17'—H17D | 0.9800 |
C10—H10 | 0.9500 | C17'—H17E | 0.9800 |
C11—C12 | 1.379 (7) | C17'—H17F | 0.9800 |
C11—H11 | 0.9500 | N1—P1 | 1.642 (4) |
C12—C13 | 1.392 (6) | N1—H1 | 0.8800 |
C12—H12 | 0.9500 | N2—P1 | 1.629 (3) |
C13—H13 | 0.9500 | N2—H2 | 0.8800 |
C14—C16 | 1.483 (11) | O1—P1 | 1.478 (3) |
C14—C15' | 1.487 (10) | O2—P1 | 1.603 (3) |
C2—C1—H1A | 109.5 | N2—C14—C16' | 107.3 (4) |
C2—C1—H1B | 109.5 | C16—C14—C15 | 110.2 (7) |
H1A—C1—H1B | 109.5 | C17'—C14—C15 | 73.1 (6) |
C2—C1—H1C | 109.5 | N2—C14—C15 | 108.1 (4) |
H1A—C1—H1C | 109.5 | C16'—C14—C15 | 142.0 (6) |
H1B—C1—H1C | 109.5 | C16—C14—C17 | 109.4 (6) |
C7—C2—C3 | 116.9 (4) | C15'—C14—C17 | 133.6 (6) |
C7—C2—C1 | 121.5 (5) | N2—C14—C17 | 110.0 (5) |
C3—C2—C1 | 121.5 (5) | C16'—C14—C17 | 75.4 (6) |
C4—C3—C2 | 122.4 (4) | C15—C14—C17 | 104.6 (6) |
C4—C3—H3 | 118.8 | C14—C15—H15A | 109.5 |
C2—C3—H3 | 118.8 | C14—C15—H15B | 109.5 |
C5—C4—C3 | 119.6 (4) | C14—C15—H15C | 109.5 |
C5—C4—H4 | 120.2 | C14—C16—H16A | 109.5 |
C3—C4—H4 | 120.2 | C14—C16—H16B | 109.5 |
C4—C5—C6 | 119.0 (4) | C14—C16—H16C | 109.5 |
C4—C5—N1 | 122.9 (4) | C14—C17—H17A | 109.5 |
C6—C5—N1 | 118.1 (4) | C14—C17—H17B | 109.5 |
C7—C6—C5 | 119.8 (4) | C14—C17—H17C | 109.5 |
C7—C6—H6 | 120.1 | C14—C15'—H15D | 109.5 |
C5—C6—H6 | 120.1 | C14—C15'—H15E | 109.5 |
C6—C7—C2 | 122.3 (4) | H15D—C15'—H15E | 109.5 |
C6—C7—H7 | 118.9 | C14—C15'—H15F | 109.5 |
C2—C7—H7 | 118.9 | H15D—C15'—H15F | 109.5 |
C9—C8—C13 | 122.3 (4) | H15E—C15'—H15F | 109.5 |
C9—C8—O2 | 118.6 (4) | C14—C16'—H16D | 109.5 |
C13—C8—O2 | 119.0 (4) | C14—C16'—H16E | 109.5 |
C8—C9—C10 | 118.4 (4) | H16D—C16'—H16E | 109.5 |
C8—C9—H9 | 120.8 | C14—C16'—H16F | 109.5 |
C10—C9—H9 | 120.8 | H16D—C16'—H16F | 109.5 |
C11—C10—C9 | 120.5 (4) | H16E—C16'—H16F | 109.5 |
C11—C10—H10 | 119.8 | C14—C17'—H17D | 109.5 |
C9—C10—H10 | 119.8 | C14—C17'—H17E | 109.5 |
C12—C11—C10 | 119.7 (4) | H17D—C17'—H17E | 109.5 |
C12—C11—H11 | 120.1 | C14—C17'—H17F | 109.5 |
C10—C11—H11 | 120.1 | H17D—C17'—H17F | 109.5 |
C11—C12—C13 | 121.5 (5) | H17E—C17'—H17F | 109.5 |
C11—C12—H12 | 119.2 | C5—N1—P1 | 130.2 (3) |
C13—C12—H12 | 119.2 | C5—N1—H1 | 114.9 |
C8—C13—C12 | 117.6 (4) | P1—N1—H1 | 114.9 |
C8—C13—H13 | 121.2 | C14—N2—P1 | 126.0 (3) |
C12—C13—H13 | 121.2 | C14—N2—H2 | 117.0 |
C16—C14—C15' | 71.0 (7) | P1—N2—H2 | 117.0 |
C16—C14—C17' | 135.3 (6) | C8—O2—P1 | 118.8 (3) |
C15'—C14—C17' | 111.8 (6) | O1—P1—O2 | 115.41 (16) |
C16—C14—N2 | 114.0 (5) | O1—P1—N2 | 117.03 (17) |
C15'—C14—N2 | 111.4 (4) | O2—P1—N2 | 96.76 (17) |
C17'—C14—N2 | 106.2 (5) | O1—P1—N1 | 107.61 (19) |
C15'—C14—C16' | 110.4 (7) | O2—P1—N1 | 107.01 (16) |
C17'—C14—C16' | 109.5 (6) | N2—P1—N1 | 112.47 (17) |
C7—C2—C3—C4 | 0.3 (6) | C6—C5—N1—P1 | 159.1 (3) |
C1—C2—C3—C4 | 179.6 (4) | C16—C14—N2—P1 | 32.5 (6) |
C2—C3—C4—C5 | 0.7 (6) | C15'—C14—N2—P1 | −45.5 (7) |
C3—C4—C5—C6 | −1.2 (5) | C17'—C14—N2—P1 | −167.5 (5) |
C3—C4—C5—N1 | 179.3 (3) | C16'—C14—N2—P1 | 75.5 (6) |
C4—C5—C6—C7 | 0.7 (6) | C15—C14—N2—P1 | −90.4 (6) |
N1—C5—C6—C7 | −179.8 (3) | C17—C14—N2—P1 | 155.9 (6) |
C5—C6—C7—C2 | 0.3 (6) | C9—C8—O2—P1 | −101.8 (4) |
C3—C2—C7—C6 | −0.8 (6) | C13—C8—O2—P1 | 80.5 (5) |
C1—C2—C7—C6 | 179.9 (4) | C8—O2—P1—O1 | −51.6 (3) |
C13—C8—C9—C10 | −1.0 (7) | C8—O2—P1—N2 | −175.9 (3) |
O2—C8—C9—C10 | −178.6 (4) | C8—O2—P1—N1 | 68.1 (3) |
C8—C9—C10—C11 | 0.0 (8) | C14—N2—P1—O1 | 54.8 (4) |
C9—C10—C11—C12 | 1.2 (8) | C14—N2—P1—O2 | 177.8 (3) |
C10—C11—C12—C13 | −1.4 (8) | C14—N2—P1—N1 | −70.6 (4) |
C9—C8—C13—C12 | 0.7 (7) | C5—N1—P1—O1 | −170.6 (3) |
O2—C8—C13—C12 | 178.3 (4) | C5—N1—P1—O2 | 64.8 (3) |
C11—C12—C13—C8 | 0.5 (8) | C5—N1—P1—N2 | −40.3 (4) |
C4—C5—N1—P1 | −21.4 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N2i | 0.88 | 2.32 | 3.175 (5) | 163 |
N2—H2···O1ii | 0.88 | 2.40 | 3.275 (5) | 170 |
Symmetry codes: (i) −x+1/2, y+1/2, −z+1/2; (ii) −x+1/2, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C17H23N2O2P |
Mr | 318.34 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 100 |
a, b, c (Å) | 11.412 (5), 9.519 (4), 15.768 (6) |
β (°) | 104.332 (5) |
V (Å3) | 1659.5 (12) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.18 |
Crystal size (mm) | 0.20 × 0.18 × 0.15 |
Data collection | |
Diffractometer | Bruker APEX CCD |
Absorption correction | Multi-scan (TWINABS; Sheldrick, 2008a) |
Tmin, Tmax | 0.966, 0.974 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3860, 18075, 2497 |
Rint | 0.087 |
(sin θ/λ)max (Å−1) | 0.666 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.089, 0.203, 1.08 |
No. of reflections | 3860 |
No. of parameters | 235 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.36, −0.42 |
Computer programs: APEX2 (Bruker, 2005), CELL_NOW (Sheldrick, 2008a) and SAINT (Bruker, 2005), SHELXS97 (Sheldrick, 2008b), SHELXL97 (Sheldrick, 2008b), Mercury (Macrae et al., 2008), SHELXTL (Sheldrick, 2008b) and enCIFer (Allen et al., 2004).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···N2i | 0.88 | 2.32 | 3.175 (5) | 162.7 |
N2—H2···O1ii | 0.88 | 2.40 | 3.275 (5) | 170.0 |
Symmetry codes: (i) −x+1/2, y+1/2, −z+1/2; (ii) −x+1/2, y−1/2, −z+1/2. |
Acknowledgements
Support of this investigation by the Ferdowsi University of Mashhad is gratefully acknowledged.
References
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Following our previous work on the synthesis of mixed-amido phosphinates containing a P(O)(O)(NH)(NH) skeleton (Pourayoubi et al., 2011a), we report here on the synthesis and crystal structure of the title compound, P(O)[OC6H5][NHC6H4(4-CH3)][NHC(CH3)3] (Fig. 1).
The P═O, P—O and P—N bond lengths and P—O—C and P—N—C bond angles are within the expected values (Sabbaghi et al., 2011). The P atom has a distorted tetrahedral conformation with the bond angles in the range of 96.76 (17)° [O2–P1–N2] to 117.03 (17)° [O1–P1–N2]. The P1—N1 bond (with length of 1.642 (4) Å) is slightly longer than the P1—N2 bond (1.629 (3) Å). The dihedral angle between the phenyl rings of the OC6H5 and NHC6H4(4-CH3) moieties is 82.3 (2)°.
In the crystal structure, the molecules are linked by weak N—H···(O)P and N—H···N hydrogen bonding interactions (Table 1) into an extended chain along [010] (Fig. 2). As illustrated for phosphoramidates by Toghraee et al. (2011) and Pourayoubi et al. (2011b,c) by examining all deposited phosphoramidates in the Cambridge Structural Database (CSD, Version 5.32, May 2011 update; Allen, 2002), the N atom of the P(═O)N unit usually adopts an sp2 character (which is reflected in the bond angles at the N atom) and usually does not act as an acceptor in hydrogen bonding interactions. Therefore, the N—H···N—P contact in the crystal packing may rather be attributed to the assembly of the molecules with respect to one another.