organic compounds
Zwitterionic (4-benzylpiperidinium-1-ylmethyl)phosphonate
aDepartment of Chemistry, Alzahra University, PO Box 1993891176, Vanak, Tehran, Iran, and bDepartment of Chemistry, Islamic Azad University, Karaj Branch, Karaj, Iran
*Correspondence e-mail: dehganpour_farasha@yahoo.com
The title compound, C13H20NO3P, exists as a zwitterion: the phosphonic acid group has transferred its H atom to the amino group. The piperidine ring adopts a chair conformation. Molecules are linked via hydrogen bonding to form a linear chain.
Related literature
For similar structures, see: Kotek et al. (2000); Mao et al. (2002); Ying et al. (2007); Vivani et al. (2004).
Experimental
Crystal data
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Refinement
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Data collection: X-AREA (Stoe & Cie, 2005); cell X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
https://doi.org/10.1107/S1600536807061429/ng2383sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807061429/ng2383Isup2.hkl
A quantity of 0.33 mole of benzylpiperidne was dissolved in 75 ml of concentrated HCl and a concentrated aqueous solution of 2 moles of phosphorous acid. The resulting solution was heated to reflux temperature and 160 ml of 37% aqueous formaldehyde solution (2 moles) was added dropwise in the course of 1 hr and the reaction mixture was kept at reflux temperature for 3 additional hr. Upon cooling to room temperature the acids crystallized. Calc for C13H20NO3P: C 57.99, H 7.49, N 5.20%; found C 57.96, H 7.50, N 5.21%.
H1A, H1B (for CH2) and H1C, H1D (for NH and OH) were located in difference syntheses and refined isotropically [C—H = 0.955 (16) and 0.971 (15) Å, Uiso(H) = 0.024 (4) and 0.018 (4) Å2; N—H = 0.961 (16), Uiso(H) = 0.026 (4) Å2 and O—H = 0.87 (2), Uiso(H) = 0.025 (6) Å2]. The remaining H atoms were positioned geometrically, C—H = 0.93 and 0.97 Å, for aromatic and methylene H atoms and constrained to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C).
Recently, an increasing attention has been focused on the synthesis and designing of aminodiphosphonic acids and new metal phosphonate inorganic–organic hybrid materials with one-, two- or three-dimensional structures due to their potential applications in porous materials, ion exchange reagents, catalysis, sensors, nonlinear optics materials, anti-tumour drugs, photovoltaic devices and biotechnologies (Kotek et al., 2000; Ying et al., 2007; Mao et al., 2002; Vivani et al., 2004). The title compounds, (I), Fig. 1, was prepared by the reaction of benzylpiperidine and formaldehyde with posphorus acid (Scheme I).
The coordination environment around the phosphorus atoms of compound (I) are approximately tetrahedral, since average of six angles involving P are 109.35°. However the coordination is clearly distorted, arising from the presence of different substituents at phosphorus center. The angles O2—P1—O3 and C1—P1—O2 have values of 104.59 (5) and 118.29 (4)°, respectively. The piperidine ring in the titled compound adopt a chair conformation similar to that of cyclohexane. Bond lengths involving phosphorus atom are in good agreement with values found in other similar compounds (Ying et al., 2007; Vivani et al., 2004). The molecules are linked via intermolecular hydrogen bonding to form a one-dimensional chain of fused rings (Fig. 2).
For similar structures, see: Kotek et al. (2000); Mao et al. (2002); Ying et al. (2007); Vivani et al. (2004).
Data collection: X-AREA (Stoe & Cie, 2005); cell
X-AREA (Stoe & Cie, 2005); data reduction: X-AREA (Stoe & Cie, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).C13H20NO3P | F(000) = 1152 |
Mr = 269.27 | Dx = 1.345 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 2500 reflections |
a = 9.2791 (6) Å | θ = 2.7–29.2° |
b = 11.4916 (9) Å | µ = 0.21 mm−1 |
c = 24.915 (2) Å | T = 120 K |
V = 2656.7 (3) Å3 | Block, colourless |
Z = 8 | 0.50 × 0.50 × 0.30 mm |
Stoe IPDS II diffractometer | 3536 independent reflections |
Radiation source: fine-focus sealed tube | 3336 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
Detector resolution: 0.15 pixels mm-1 | θmax = 29.2°, θmin = 2.7° |
rotation method scans | h = −12→9 |
Absorption correction: numerical shape of crystal determined optically | k = −15→15 |
Tmin = 0.900, Tmax = 0.938 | l = −34→22 |
9369 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)] = 0.033 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.087 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.10 | w = 1/[σ2(Fo2) + (0.0402P)2 + 1.177P] where P = (Fo2 + 2Fc2)/3 |
3536 reflections | (Δ/σ)max = 0.013 |
179 parameters | Δρmax = 0.41 e Å−3 |
0 restraints | Δρmin = −0.37 e Å−3 |
C13H20NO3P | V = 2656.7 (3) Å3 |
Mr = 269.27 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 9.2791 (6) Å | µ = 0.21 mm−1 |
b = 11.4916 (9) Å | T = 120 K |
c = 24.915 (2) Å | 0.50 × 0.50 × 0.30 mm |
Stoe IPDS II diffractometer | 3536 independent reflections |
Absorption correction: numerical shape of crystal determined optically | 3336 reflections with I > 2σ(I) |
Tmin = 0.900, Tmax = 0.938 | Rint = 0.029 |
9369 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.087 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.10 | Δρmax = 0.41 e Å−3 |
3536 reflections | Δρmin = −0.37 e Å−3 |
179 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 | ||
C1 | 0.13013 (11) | 0.26512 (9) | 0.27800 (4) | 0.01598 (19) | |
H1A | 0.0464 (18) | 0.3020 (14) | 0.2923 (6) | 0.024 (4)* | |
H1B | 0.1752 (16) | 0.3137 (13) | 0.2509 (6) | 0.018 (4)* | |
C2 | 0.17889 (11) | 0.19257 (9) | 0.37040 (4) | 0.01476 (19) | |
H2A | 0.1523 | 0.1145 | 0.3595 | 0.018* | |
H2B | 0.0929 | 0.2313 | 0.3834 | 0.018* | |
C3 | 0.28979 (12) | 0.18585 (9) | 0.41550 (4) | 0.0168 (2) | |
H3A | 0.3722 | 0.1411 | 0.4034 | 0.020* | |
H3B | 0.2478 | 0.1456 | 0.4460 | 0.020* | |
C4 | 0.34034 (11) | 0.30678 (9) | 0.43324 (4) | 0.0164 (2) | |
H4 | 0.2572 | 0.3492 | 0.4476 | 0.020* | |
C5 | 0.39579 (12) | 0.37187 (9) | 0.38385 (4) | 0.0187 (2) | |
H5A | 0.4230 | 0.4503 | 0.3941 | 0.022* | |
H5B | 0.4812 | 0.3330 | 0.3703 | 0.022* | |
C6 | 0.28336 (12) | 0.37782 (9) | 0.33957 (4) | 0.0186 (2) | |
H6A | 0.2003 | 0.4212 | 0.3522 | 0.022* | |
H6B | 0.3231 | 0.4184 | 0.3088 | 0.022* | |
C7 | 0.45790 (12) | 0.30258 (11) | 0.47679 (4) | 0.0205 (2) | |
H7A | 0.5386 | 0.2574 | 0.4634 | 0.025* | |
H7B | 0.4920 | 0.3811 | 0.4834 | 0.025* | |
C8 | 0.40779 (11) | 0.25042 (10) | 0.52920 (4) | 0.0171 (2) | |
C9 | 0.43625 (13) | 0.13470 (10) | 0.54190 (5) | 0.0232 (2) | |
H9 | 0.4878 | 0.0888 | 0.5179 | 0.028* | |
C10 | 0.38867 (15) | 0.08657 (11) | 0.59010 (6) | 0.0293 (3) | |
H10 | 0.4094 | 0.0093 | 0.5981 | 0.035* | |
C11 | 0.31058 (14) | 0.15354 (14) | 0.62611 (5) | 0.0308 (3) | |
H11 | 0.2775 | 0.1212 | 0.6580 | 0.037* | |
C12 | 0.28203 (13) | 0.26958 (13) | 0.61413 (5) | 0.0274 (3) | |
H12 | 0.2304 | 0.3152 | 0.6382 | 0.033* | |
C13 | 0.33060 (12) | 0.31742 (11) | 0.56609 (4) | 0.0206 (2) | |
H13 | 0.3114 | 0.3951 | 0.5585 | 0.025* | |
N1 | 0.23706 (9) | 0.25759 (7) | 0.32299 (3) | 0.01285 (16) | |
H1C | 0.3240 (17) | 0.2205 (14) | 0.3109 (7) | 0.026 (4)* | |
O1 | −0.02029 (8) | 0.06162 (7) | 0.28658 (3) | 0.01733 (16) | |
H1D | −0.112 (2) | 0.0696 (19) | 0.2790 (9) | 0.025 (6)* | |
O2 | −0.00660 (8) | 0.16513 (8) | 0.19677 (3) | 0.01869 (17) | |
O3 | 0.21224 (8) | 0.05809 (7) | 0.23662 (3) | 0.01744 (16) | |
P1 | 0.07816 (3) | 0.12808 (2) | 0.245156 (10) | 0.01325 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0144 (4) | 0.0193 (5) | 0.0142 (4) | 0.0022 (4) | −0.0014 (4) | 0.0033 (4) |
C2 | 0.0152 (4) | 0.0181 (4) | 0.0110 (4) | −0.0024 (4) | 0.0017 (3) | 0.0016 (3) |
C3 | 0.0185 (5) | 0.0196 (5) | 0.0123 (4) | −0.0013 (4) | −0.0011 (3) | 0.0014 (4) |
C4 | 0.0143 (4) | 0.0206 (5) | 0.0144 (4) | 0.0008 (4) | 0.0003 (3) | −0.0030 (4) |
C5 | 0.0190 (5) | 0.0178 (5) | 0.0194 (5) | −0.0033 (4) | −0.0016 (4) | 0.0003 (4) |
C6 | 0.0208 (5) | 0.0148 (5) | 0.0202 (5) | −0.0024 (4) | −0.0025 (4) | 0.0020 (4) |
C7 | 0.0150 (5) | 0.0308 (6) | 0.0158 (5) | −0.0019 (4) | −0.0005 (4) | −0.0032 (4) |
C8 | 0.0124 (4) | 0.0241 (5) | 0.0147 (4) | −0.0007 (4) | −0.0027 (3) | −0.0044 (4) |
C9 | 0.0218 (5) | 0.0224 (5) | 0.0252 (5) | −0.0018 (4) | −0.0047 (4) | −0.0074 (4) |
C10 | 0.0274 (6) | 0.0255 (6) | 0.0349 (6) | −0.0099 (5) | −0.0105 (5) | 0.0052 (5) |
C11 | 0.0208 (6) | 0.0496 (8) | 0.0220 (5) | −0.0131 (6) | −0.0042 (4) | 0.0084 (5) |
C12 | 0.0158 (5) | 0.0493 (8) | 0.0170 (5) | 0.0011 (5) | 0.0009 (4) | −0.0057 (5) |
C13 | 0.0158 (5) | 0.0286 (6) | 0.0175 (5) | 0.0049 (4) | −0.0022 (4) | −0.0054 (4) |
N1 | 0.0119 (4) | 0.0149 (4) | 0.0117 (3) | 0.0007 (3) | 0.0013 (3) | 0.0012 (3) |
O1 | 0.0094 (3) | 0.0269 (4) | 0.0157 (3) | −0.0011 (3) | −0.0008 (3) | 0.0056 (3) |
O2 | 0.0117 (3) | 0.0317 (4) | 0.0127 (3) | 0.0020 (3) | −0.0013 (3) | 0.0044 (3) |
O3 | 0.0094 (3) | 0.0236 (4) | 0.0194 (4) | 0.0015 (3) | 0.0004 (3) | −0.0001 (3) |
P1 | 0.00793 (13) | 0.02066 (14) | 0.01116 (12) | 0.00100 (9) | −0.00030 (8) | 0.00220 (9) |
C1—N1 | 1.4993 (13) | C7—C8 | 1.5101 (15) |
C1—P1 | 1.8391 (11) | C7—H7A | 0.9700 |
C1—H1A | 0.955 (16) | C7—H7B | 0.9700 |
C1—H1B | 0.971 (15) | C8—C9 | 1.3922 (16) |
C2—N1 | 1.4984 (12) | C8—C13 | 1.3966 (15) |
C2—C3 | 1.5256 (14) | C9—C10 | 1.3939 (18) |
C2—H2A | 0.9700 | C9—H9 | 0.9300 |
C2—H2B | 0.9700 | C10—C11 | 1.386 (2) |
C3—C4 | 1.5319 (15) | C10—H10 | 0.9300 |
C3—H3A | 0.9700 | C11—C12 | 1.392 (2) |
C3—H3B | 0.9700 | C11—H11 | 0.9300 |
C4—C5 | 1.5293 (15) | C12—C13 | 1.3921 (17) |
C4—C7 | 1.5394 (15) | C12—H12 | 0.9300 |
C4—H4 | 0.9800 | C13—H13 | 0.9300 |
C5—C6 | 1.5199 (15) | N1—H1C | 0.961 (16) |
C5—H5A | 0.9700 | O1—P1 | 1.5758 (8) |
C5—H5B | 0.9700 | O1—H1D | 0.87 (2) |
C6—N1 | 1.5047 (13) | O2—P1 | 1.5010 (8) |
C6—H6A | 0.9700 | O3—P1 | 1.4967 (8) |
C6—H6B | 0.9700 | ||
N1—C1—P1 | 117.17 (7) | C8—C7—H7A | 108.8 |
N1—C1—H1A | 106.5 (9) | C4—C7—H7A | 108.8 |
P1—C1—H1A | 109.5 (10) | C8—C7—H7B | 108.8 |
N1—C1—H1B | 105.6 (9) | C4—C7—H7B | 108.8 |
P1—C1—H1B | 107.1 (9) | H7A—C7—H7B | 107.7 |
H1A—C1—H1B | 110.8 (13) | C9—C8—C13 | 118.31 (11) |
N1—C2—C3 | 111.28 (8) | C9—C8—C7 | 121.14 (10) |
N1—C2—H2A | 109.4 | C13—C8—C7 | 120.54 (11) |
C3—C2—H2A | 109.4 | C8—C9—C10 | 120.98 (11) |
N1—C2—H2B | 109.4 | C8—C9—H9 | 119.5 |
C3—C2—H2B | 109.4 | C10—C9—H9 | 119.5 |
H2A—C2—H2B | 108.0 | C11—C10—C9 | 120.19 (12) |
C2—C3—C4 | 111.91 (8) | C11—C10—H10 | 119.9 |
C2—C3—H3A | 109.2 | C9—C10—H10 | 119.9 |
C4—C3—H3A | 109.2 | C10—C11—C12 | 119.50 (12) |
C2—C3—H3B | 109.2 | C10—C11—H11 | 120.2 |
C4—C3—H3B | 109.2 | C12—C11—H11 | 120.2 |
H3A—C3—H3B | 107.9 | C11—C12—C13 | 120.07 (12) |
C5—C4—C3 | 108.33 (8) | C11—C12—H12 | 120.0 |
C5—C4—C7 | 110.13 (9) | C13—C12—H12 | 120.0 |
C3—C4—C7 | 113.07 (9) | C12—C13—C8 | 120.94 (12) |
C5—C4—H4 | 108.4 | C12—C13—H13 | 119.5 |
C3—C4—H4 | 108.4 | C8—C13—H13 | 119.5 |
C7—C4—H4 | 108.4 | C2—N1—C1 | 112.32 (8) |
C6—C5—C4 | 112.03 (9) | C2—N1—C6 | 110.13 (8) |
C6—C5—H5A | 109.2 | C1—N1—C6 | 109.95 (8) |
C4—C5—H5A | 109.2 | C2—N1—H1C | 109.2 (10) |
C6—C5—H5B | 109.2 | C1—N1—H1C | 110.3 (10) |
C4—C5—H5B | 109.2 | C6—N1—H1C | 104.7 (9) |
H5A—C5—H5B | 107.9 | P1—O1—H1D | 111.8 (14) |
N1—C6—C5 | 110.74 (8) | O3—P1—O2 | 118.29 (4) |
N1—C6—H6A | 109.5 | O3—P1—O1 | 108.33 (5) |
C5—C6—H6A | 109.5 | O2—P1—O1 | 111.09 (4) |
N1—C6—H6B | 109.5 | O3—P1—C1 | 107.78 (5) |
C5—C6—H6B | 109.5 | O2—P1—C1 | 104.59 (5) |
H6A—C6—H6B | 108.1 | O1—P1—C1 | 106.00 (5) |
C8—C7—C4 | 113.81 (9) | ||
N1—C2—C3—C4 | 57.02 (11) | C10—C11—C12—C13 | 0.56 (18) |
C2—C3—C4—C5 | −54.79 (11) | C11—C12—C13—C8 | 0.24 (17) |
C2—C3—C4—C7 | −177.15 (9) | C9—C8—C13—C12 | −0.62 (16) |
C3—C4—C5—C6 | 55.62 (11) | C7—C8—C13—C12 | 178.99 (10) |
C7—C4—C5—C6 | 179.76 (9) | C3—C2—N1—C1 | 179.84 (8) |
C4—C5—C6—N1 | −58.18 (12) | C3—C2—N1—C6 | −57.25 (11) |
C5—C4—C7—C8 | 174.20 (9) | P1—C1—N1—C2 | −65.29 (10) |
C3—C4—C7—C8 | −64.45 (12) | P1—C1—N1—C6 | 171.70 (7) |
C4—C7—C8—C9 | 98.50 (12) | C5—C6—N1—C2 | 57.69 (11) |
C4—C7—C8—C13 | −81.09 (13) | C5—C6—N1—C1 | −178.02 (9) |
C13—C8—C9—C10 | 0.20 (16) | N1—C1—P1—O3 | −43.51 (9) |
C7—C8—C9—C10 | −179.40 (10) | N1—C1—P1—O2 | −170.22 (7) |
C8—C9—C10—C11 | 0.60 (18) | N1—C1—P1—O1 | 72.31 (8) |
C9—C10—C11—C12 | −0.98 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1C···O2 | 0.961 (16) | 1.707 (16) | 2.651 (1) | 166 (2) |
O1—H1D···O3 | 0.877 (19) | 1.682 (19) | 2.549 (1) | 169 (2) |
Experimental details
Crystal data | |
Chemical formula | C13H20NO3P |
Mr | 269.27 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 120 |
a, b, c (Å) | 9.2791 (6), 11.4916 (9), 24.915 (2) |
V (Å3) | 2656.7 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.50 × 0.50 × 0.30 |
Data collection | |
Diffractometer | Stoe IPDS II |
Absorption correction | Numerical shape of crystal determined optically |
Tmin, Tmax | 0.900, 0.938 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9369, 3536, 3336 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.687 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.087, 1.10 |
No. of reflections | 3536 |
No. of parameters | 179 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.41, −0.37 |
Computer programs: X-AREA (Stoe & Cie, 2005), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEP-3 for Windows (Farrugia, 1997), WinGX (Farrugia, 1999).
C1—P1 | 1.8391 (11) | O2—P1 | 1.5010 (8) |
O1—P1 | 1.5758 (8) | O3—P1 | 1.4967 (8) |
O3—P1—O2 | 118.29 (4) | O3—P1—C1 | 107.78 (5) |
O3—P1—O1 | 108.33 (5) | O2—P1—C1 | 104.59 (5) |
O2—P1—O1 | 111.09 (4) | O1—P1—C1 | 106.00 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1C···O2 | 0.961 (16) | 1.707 (16) | 2.651 (1) | 166 (2) |
O1—H1D···O3 | 0.877 (19) | 1.682 (19) | 2.549 (1) | 169 (2) |
Acknowledgements
SD acknowledges the Alzahra University Research Council for partial support of this work.
References
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Recently, an increasing attention has been focused on the synthesis and designing of aminodiphosphonic acids and new metal phosphonate inorganic–organic hybrid materials with one-, two- or three-dimensional structures due to their potential applications in porous materials, ion exchange reagents, catalysis, sensors, nonlinear optics materials, anti-tumour drugs, photovoltaic devices and biotechnologies (Kotek et al., 2000; Ying et al., 2007; Mao et al., 2002; Vivani et al., 2004). The title compounds, (I), Fig. 1, was prepared by the reaction of benzylpiperidine and formaldehyde with posphorus acid (Scheme I).
The coordination environment around the phosphorus atoms of compound (I) are approximately tetrahedral, since average of six angles involving P are 109.35°. However the coordination is clearly distorted, arising from the presence of different substituents at phosphorus center. The angles O2—P1—O3 and C1—P1—O2 have values of 104.59 (5) and 118.29 (4)°, respectively. The piperidine ring in the titled compound adopt a chair conformation similar to that of cyclohexane. Bond lengths involving phosphorus atom are in good agreement with values found in other similar compounds (Ying et al., 2007; Vivani et al., 2004). The molecules are linked via intermolecular hydrogen bonding to form a one-dimensional chain of fused rings (Fig. 2).