organic compounds
2-[(Dimethylphenylphosphanylidene)azaniumyl]-5-methylbenzenesulfonate benzene monosolvate
aDepartment of Chemistry, University of Louisville, Louisville, KY 40292, USA
*Correspondence e-mail: msmashuta.xray@louisville.edu
The title compound, C15H18NO3PS·C6H6, is a rare example of a crystallographically characterized exocyclic phosphiniminium–arenesulfonate zwitterion, which crystallises as its benzene solvate. The shows that the N atom is protonated and that the iminium H atom forms both intra- and intermolecular hydrogen bonds to the single-bonded sulfonate O atom in an R22(4) graph-set motif. The dihedral angle between the aromatic rings in the main molecule is 89.49 (8)°.
Related literature
For background to this class of compound, see: Brown et al. (2007); Bruneau & Achard (2012); Drent et al. (2002); Lee & Hoveyda (2009); Lee et al. (2008, 2009); Nakamura et al. (2009). For related structures, see: Burns et al. (2012); Liu et al. (1995); Perrotin et al. (2011); Spencer et al. (2003); Wallis et al. (2009, 2010); Zhang et al. (2006); Zhou & Jordan (2011). For hydrogen-bonding details, see: Desiraju (1995).
Experimental
Crystal data
|
|
Data collection: CrysAlis PRO (Agilent, 2010); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: PLATON (Spek, 2009) and publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536813013755/pk2483sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813013755/pk2483Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813013755/pk2483Isup3.cml
Compound (I) was synthesized following a previously reported procedure (Burns et al., 2012). Dimethylphenylphosphine (11.1 mmol) was added dropwise to a toluene solution (40 ml) of propyl-2-azido-5-methylbenzenesulfonate (9.3 mmol) at 298 K. Effervescence was observed immediately after addition of the phosphine and the clear yellow solution was stirred under N2. After 2 h the solvent was removed under vacuum. The resulting yellow oil was dissolved in CH2Cl2 (40 ml) and transferred via cannula to a suspension of pyridinium tetrafluoroborate (9.3 mmol) in CH2Cl2 (40 ml). Pyridine (14.0 mmol) was added to the white suspension in CH2Cl2 and the reaction mixture was stirred at 298 K for 48 h. A clear pale green solution was observed and the volatiles were removed under vacuum. The resulting residue was treated with diethyl ether (4 x 60 ml) followed by filtration to give a light yellow solid. The solid was purified via
using silica gel (160 g) and CH2Cl2. The column was eluted with CH2Cl2:MeOH 95:5 (500 ml), CH2Cl2:MeOH 90:10 (1 L) and CH2Cl2:MeOH 80:20 (1 L). The fractions (100 ml) were analyzed by UV-Vis, and those that contained the product were combined and dried under vacuum, affording a white solid. The solid was treated with CH2Cl2 (20 ml) and diethyl ether (100 ml) to afford a white precipitate. Filtration of the precipitate followed by diethyl ether washes (3 x 20 ml) afforded the title compound as a white powder (3.86 g, 70%). Crystals for X-ray analysis were obtained by slow diffusion of benzene into a CHCl3 solution of the title compound in a sealed 5 mm tube at 298 K.The iminum hydrogen atom was located in a difference map and refined isotropically. Aromatic H atom positions were calculated, and included as fixed contributions with Uiso(H) = 1.2 x Ueq(C). Methyl H atoms were placed in calculated positions and allowed to ride (the torsion angle which defines its orientation was allowed to refine) on the attached C atom, and these atoms were assigned Uiso(H) = 1.5 x Ueq(C). The highest peak, 1.40 e/Å3, and deepest trough, -0.42 e/Å3, are located 0.75 Å and 0.73 Å from C16 and C20 respectively.
Data collection: CrysAlis PRO (Agilent, 2010); cell
CrysAlis PRO (Agilent, 2010); data reduction: CrysAlis PRO (Agilent, 2010); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: PLATON (Spek, 2009) and publCIF (Westrip, 2010).C15H18NO3PS·C6H6 | Z = 2 |
Mr = 401.44 | F(000) = 424 |
Triclinic, P1 | Dx = 1.341 Mg m−3 |
Hall symbol: -P 1 | Melting point: 490 K |
a = 9.3696 (2) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 10.3141 (2) Å | Cell parameters from 16324 reflections |
c = 11.7579 (3) Å | θ = 3.3–29.0° |
α = 68.665 (2)° | µ = 0.27 mm−1 |
β = 78.180 (2)° | T = 100 K |
γ = 70.630 (2)° | Prism, colorless |
V = 993.89 (4) Å3 | 0.41 × 0.31 × 0.25 mm |
Agilent Xcalibur (Ruby, Gemini) diffractometer | 5263 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 4918 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.017 |
Detector resolution: 10.2836 pixels mm-1 | θmax = 29.1°, θmin = 3.3° |
ω scans | h = −12→12 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | k = −13→13 |
Tmin = 0.939, Tmax = 1.000 | l = −16→16 |
22626 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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.096 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0264P)2 + 1.4298P] where P = (Fo2 + 2Fc2)/3 |
5263 reflections | (Δ/σ)max = 0.001 |
251 parameters | Δρmax = 1.40 e Å−3 |
0 restraints | Δρmin = −0.42 e Å−3 |
C15H18NO3PS·C6H6 | γ = 70.630 (2)° |
Mr = 401.44 | V = 993.89 (4) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.3696 (2) Å | Mo Kα radiation |
b = 10.3141 (2) Å | µ = 0.27 mm−1 |
c = 11.7579 (3) Å | T = 100 K |
α = 68.665 (2)° | 0.41 × 0.31 × 0.25 mm |
β = 78.180 (2)° |
Agilent Xcalibur (Ruby, Gemini) diffractometer | 5263 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2010) | 4918 reflections with I > 2σ(I) |
Tmin = 0.939, Tmax = 1.000 | Rint = 0.017 |
22626 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 0 restraints |
wR(F2) = 0.096 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 1.40 e Å−3 |
5263 reflections | Δρmin = −0.42 e Å−3 |
251 parameters |
x | y | z | Uiso*/Ueq | ||
S1 | 0.24462 (4) | 0.76594 (4) | 0.45953 (3) | 0.01262 (9) | |
P1 | 0.71909 (4) | 0.68470 (4) | 0.55802 (3) | 0.01128 (9) | |
O1 | 0.28714 (14) | 0.88299 (13) | 0.35938 (11) | 0.0211 (2) | |
O2 | 0.34682 (13) | 0.62271 (12) | 0.46153 (11) | 0.0181 (2) | |
O3 | 0.08543 (12) | 0.77151 (14) | 0.47013 (11) | 0.0200 (2) | |
N1 | 0.54554 (14) | 0.67514 (14) | 0.56918 (12) | 0.0135 (2) | |
H1N | 0.530 (3) | 0.632 (3) | 0.531 (2) | 0.027 (6)* | |
C1 | 0.27173 (16) | 0.78953 (15) | 0.59586 (13) | 0.0119 (3) | |
C2 | 0.14789 (16) | 0.86274 (16) | 0.65917 (14) | 0.0139 (3) | |
H2 | 0.0516 | 0.8904 | 0.6336 | 0.017* | |
C3 | 0.16470 (17) | 0.89556 (16) | 0.75995 (14) | 0.0155 (3) | |
C4 | 0.30965 (18) | 0.84905 (17) | 0.79818 (14) | 0.0171 (3) | |
H4 | 0.3235 | 0.8684 | 0.8658 | 0.021* | |
C5 | 0.43403 (17) | 0.77421 (17) | 0.73725 (14) | 0.0156 (3) | |
H5 | 0.5294 | 0.7428 | 0.7655 | 0.019* | |
C6 | 0.41761 (16) | 0.74565 (15) | 0.63435 (13) | 0.0125 (3) | |
C7 | 0.03151 (19) | 0.98321 (19) | 0.82218 (16) | 0.0221 (3) | |
H7A | 0.0137 | 0.9262 | 0.9060 | 0.033* | |
H7B | −0.0573 | 1.0103 | 0.7806 | 0.033* | |
H7C | 0.0532 | 1.0690 | 0.8195 | 0.033* | |
C8 | 0.81146 (16) | 0.56744 (16) | 0.69318 (13) | 0.0140 (3) | |
C9 | 0.92555 (18) | 0.6000 (2) | 0.72847 (15) | 0.0210 (3) | |
H9 | 0.9523 | 0.6850 | 0.6835 | 0.025* | |
C10 | 0.9990 (2) | 0.5043 (2) | 0.83147 (17) | 0.0296 (4) | |
H10 | 1.0755 | 0.5250 | 0.8552 | 0.036* | |
C11 | 0.9585 (2) | 0.3787 (2) | 0.89842 (18) | 0.0329 (4) | |
H11 | 1.0074 | 0.3155 | 0.9676 | 0.040* | |
C12 | 0.8455 (2) | 0.34585 (19) | 0.86339 (17) | 0.0286 (4) | |
H12 | 0.8190 | 0.2609 | 0.9090 | 0.034* | |
C13 | 0.77174 (19) | 0.43981 (17) | 0.76011 (15) | 0.0191 (3) | |
H13 | 0.6966 | 0.4177 | 0.7360 | 0.023* | |
C14 | 0.82093 (17) | 0.63095 (17) | 0.42977 (14) | 0.0169 (3) | |
H14A | 0.8261 | 0.5318 | 0.4443 | 0.025* | |
H14B | 0.9220 | 0.6403 | 0.4181 | 0.025* | |
H14C | 0.7698 | 0.6918 | 0.3577 | 0.025* | |
C15 | 0.71858 (18) | 0.86602 (16) | 0.53121 (16) | 0.0186 (3) | |
H15A | 0.6603 | 0.9301 | 0.4637 | 0.028* | |
H15B | 0.8210 | 0.8728 | 0.5121 | 0.028* | |
H15C | 0.6741 | 0.8931 | 0.6034 | 0.028* | |
C16 | 0.6085 (3) | 0.8347 (2) | 0.14006 (19) | 0.0392 (5) | |
H16 | 0.5942 | 0.8883 | 0.1923 | 0.047* | |
C17 | 0.6651 (3) | 0.8839 (3) | 0.0207 (2) | 0.0363 (5) | |
H17 | 0.6838 | 0.9741 | −0.0092 | 0.044* | |
C18 | 0.6951 (2) | 0.8019 (2) | −0.05696 (18) | 0.0318 (4) | |
H18 | 0.7352 | 0.8361 | −0.1377 | 0.038* | |
C19 | 0.6647 (2) | 0.6685 (2) | −0.01315 (18) | 0.0296 (4) | |
H19 | 0.6886 | 0.6115 | −0.0639 | 0.035* | |
C20 | 0.6011 (2) | 0.6207 (2) | 0.1021 (2) | 0.0319 (4) | |
H20 | 0.5761 | 0.5336 | 0.1287 | 0.038* | |
C21 | 0.5720 (2) | 0.7022 (2) | 0.18328 (18) | 0.0311 (4) | |
H21 | 0.5297 | 0.6686 | 0.2634 | 0.037* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.01064 (16) | 0.01423 (17) | 0.01497 (16) | −0.00342 (12) | −0.00207 (12) | −0.00656 (13) |
P1 | 0.00971 (16) | 0.01120 (16) | 0.01365 (17) | −0.00251 (12) | −0.00188 (12) | −0.00481 (13) |
O1 | 0.0269 (6) | 0.0214 (6) | 0.0159 (5) | −0.0104 (5) | −0.0009 (4) | −0.0045 (4) |
O2 | 0.0163 (5) | 0.0174 (5) | 0.0248 (6) | −0.0016 (4) | −0.0054 (4) | −0.0125 (4) |
O3 | 0.0117 (5) | 0.0294 (6) | 0.0234 (6) | −0.0056 (4) | −0.0028 (4) | −0.0131 (5) |
N1 | 0.0098 (5) | 0.0159 (6) | 0.0188 (6) | −0.0028 (4) | −0.0019 (4) | −0.0107 (5) |
C1 | 0.0122 (6) | 0.0112 (6) | 0.0137 (6) | −0.0043 (5) | −0.0013 (5) | −0.0045 (5) |
C2 | 0.0118 (6) | 0.0129 (6) | 0.0169 (7) | −0.0039 (5) | −0.0005 (5) | −0.0047 (5) |
C3 | 0.0155 (7) | 0.0143 (6) | 0.0158 (7) | −0.0035 (5) | 0.0012 (5) | −0.0059 (5) |
C4 | 0.0198 (7) | 0.0183 (7) | 0.0154 (7) | −0.0044 (6) | −0.0017 (6) | −0.0085 (6) |
C5 | 0.0134 (6) | 0.0173 (7) | 0.0174 (7) | −0.0027 (5) | −0.0039 (5) | −0.0072 (6) |
C6 | 0.0115 (6) | 0.0107 (6) | 0.0156 (6) | −0.0031 (5) | −0.0008 (5) | −0.0048 (5) |
C7 | 0.0186 (7) | 0.0250 (8) | 0.0221 (8) | −0.0009 (6) | 0.0012 (6) | −0.0130 (6) |
C8 | 0.0119 (6) | 0.0151 (7) | 0.0144 (6) | −0.0008 (5) | −0.0021 (5) | −0.0065 (5) |
C9 | 0.0152 (7) | 0.0303 (9) | 0.0206 (7) | −0.0075 (6) | −0.0026 (6) | −0.0102 (7) |
C10 | 0.0191 (8) | 0.0455 (11) | 0.0260 (9) | −0.0008 (7) | −0.0100 (7) | −0.0166 (8) |
C11 | 0.0346 (10) | 0.0329 (10) | 0.0227 (9) | 0.0095 (8) | −0.0151 (7) | −0.0094 (7) |
C12 | 0.0417 (11) | 0.0169 (8) | 0.0206 (8) | 0.0001 (7) | −0.0079 (7) | −0.0033 (6) |
C13 | 0.0234 (8) | 0.0155 (7) | 0.0184 (7) | −0.0037 (6) | −0.0037 (6) | −0.0061 (6) |
C14 | 0.0146 (7) | 0.0204 (7) | 0.0159 (7) | −0.0039 (6) | 0.0004 (5) | −0.0078 (6) |
C15 | 0.0174 (7) | 0.0121 (7) | 0.0266 (8) | −0.0046 (5) | −0.0031 (6) | −0.0058 (6) |
C16 | 0.0531 (13) | 0.0367 (11) | 0.0249 (9) | −0.0015 (10) | −0.0034 (9) | −0.0168 (8) |
C17 | 0.0350 (11) | 0.0372 (11) | 0.0396 (11) | −0.0124 (9) | −0.0016 (9) | −0.0145 (9) |
C18 | 0.0265 (9) | 0.0423 (11) | 0.0248 (9) | −0.0089 (8) | −0.0007 (7) | −0.0104 (8) |
C19 | 0.0248 (9) | 0.0381 (10) | 0.0286 (9) | −0.0033 (8) | −0.0065 (7) | −0.0167 (8) |
C20 | 0.0221 (9) | 0.0338 (10) | 0.0443 (11) | −0.0117 (7) | 0.0074 (8) | −0.0199 (9) |
C21 | 0.0268 (9) | 0.0488 (12) | 0.0215 (8) | −0.0143 (8) | 0.0017 (7) | −0.0144 (8) |
S1—O1 | 1.4474 (12) | C9—H9 | 0.9300 |
S1—O3 | 1.4547 (11) | C10—C11 | 1.380 (3) |
S1—O2 | 1.4648 (11) | C10—H10 | 0.9300 |
S1—O2 | 1.4648 (11) | C11—C12 | 1.387 (3) |
S1—C1 | 1.7845 (15) | C11—H11 | 0.9300 |
P1—N1 | 1.6373 (13) | C12—C13 | 1.391 (2) |
P1—C14 | 1.7776 (15) | C12—H12 | 0.9300 |
P1—C15 | 1.7783 (16) | C13—H13 | 0.9300 |
P1—C8 | 1.7911 (15) | C14—H14A | 0.9600 |
N1—C6 | 1.4155 (18) | C14—H14B | 0.9600 |
N1—H1N | 0.80 (2) | C14—H14C | 0.9600 |
C1—C2 | 1.395 (2) | C15—H15A | 0.9600 |
C1—C6 | 1.4043 (19) | C15—H15B | 0.9600 |
C2—C3 | 1.395 (2) | C15—H15C | 0.9600 |
C2—H2 | 0.9300 | C16—C17 | 1.365 (3) |
C3—C4 | 1.392 (2) | C16—C21 | 1.406 (3) |
C3—C7 | 1.506 (2) | C16—H16 | 0.9300 |
C4—C5 | 1.390 (2) | C17—C18 | 1.388 (3) |
C4—H4 | 0.9300 | C17—H17 | 0.9300 |
C5—C6 | 1.393 (2) | C18—C19 | 1.386 (3) |
C5—H5 | 0.9300 | C18—H18 | 0.9300 |
C7—H7A | 0.9600 | C19—C20 | 1.346 (3) |
C7—H7B | 0.9600 | C19—H19 | 0.9300 |
C7—H7C | 0.9600 | C20—C21 | 1.421 (3) |
C8—C13 | 1.394 (2) | C20—H20 | 0.9300 |
C8—C9 | 1.396 (2) | C21—H21 | 0.9300 |
C9—C10 | 1.391 (2) | ||
O1—S1—O3 | 114.14 (7) | C10—C9—C8 | 119.49 (17) |
O1—S1—O2 | 112.97 (7) | C10—C9—H9 | 120.3 |
O3—S1—O2 | 112.35 (7) | C8—C9—H9 | 120.3 |
O1—S1—O2 | 112.97 (7) | C11—C10—C9 | 120.11 (17) |
O3—S1—O2 | 112.35 (7) | C11—C10—H10 | 119.9 |
O1—S1—C1 | 105.48 (7) | C9—C10—H10 | 119.9 |
O3—S1—C1 | 106.09 (7) | C10—C11—C12 | 120.53 (17) |
O2—S1—C1 | 104.84 (7) | C10—C11—H11 | 119.7 |
O2—S1—C1 | 104.84 (7) | C12—C11—H11 | 119.7 |
N1—P1—C14 | 107.43 (7) | C11—C12—C13 | 120.10 (18) |
N1—P1—C15 | 110.52 (7) | C11—C12—H12 | 120.0 |
C14—P1—C15 | 108.36 (8) | C13—C12—H12 | 120.0 |
N1—P1—C8 | 111.53 (7) | C12—C13—C8 | 119.40 (16) |
C14—P1—C8 | 109.37 (7) | C12—C13—H13 | 120.3 |
C15—P1—C8 | 109.55 (7) | C8—C13—H13 | 120.3 |
C6—N1—P1 | 125.47 (10) | P1—C14—H14A | 109.5 |
C6—N1—H1N | 116.5 (17) | P1—C14—H14B | 109.5 |
P1—N1—H1N | 117.9 (17) | H14A—C14—H14B | 109.5 |
C2—C1—C6 | 119.74 (13) | P1—C14—H14C | 109.5 |
C2—C1—S1 | 119.26 (11) | H14A—C14—H14C | 109.5 |
C6—C1—S1 | 120.80 (11) | H14B—C14—H14C | 109.5 |
C1—C2—C3 | 121.75 (14) | P1—C15—H15A | 109.5 |
C1—C2—H2 | 119.1 | P1—C15—H15B | 109.5 |
C3—C2—H2 | 119.1 | H15A—C15—H15B | 109.5 |
C4—C3—C2 | 117.74 (14) | P1—C15—H15C | 109.5 |
C4—C3—C7 | 121.16 (14) | H15A—C15—H15C | 109.5 |
C2—C3—C7 | 121.05 (14) | H15B—C15—H15C | 109.5 |
C5—C4—C3 | 121.29 (14) | C17—C16—C21 | 119.3 (2) |
C5—C4—H4 | 119.4 | C17—C16—H16 | 120.3 |
C3—C4—H4 | 119.4 | C21—C16—H16 | 120.3 |
C4—C5—C6 | 120.79 (14) | C16—C17—C18 | 121.3 (2) |
C4—C5—H5 | 119.6 | C16—C17—H17 | 119.4 |
C6—C5—H5 | 119.6 | C18—C17—H17 | 119.4 |
C5—C6—C1 | 118.64 (13) | C19—C18—C17 | 119.44 (19) |
C5—C6—N1 | 120.69 (13) | C19—C18—H18 | 120.3 |
C1—C6—N1 | 120.67 (13) | C17—C18—H18 | 120.3 |
C3—C7—H7A | 109.5 | C20—C19—C18 | 120.70 (19) |
C3—C7—H7B | 109.5 | C20—C19—H19 | 119.7 |
H7A—C7—H7B | 109.5 | C18—C19—H19 | 119.7 |
C3—C7—H7C | 109.5 | C19—C20—C21 | 120.49 (19) |
H7A—C7—H7C | 109.5 | C19—C20—H20 | 119.8 |
H7B—C7—H7C | 109.5 | C21—C20—H20 | 119.8 |
C13—C8—C9 | 120.36 (15) | C16—C21—C20 | 118.63 (18) |
C13—C8—P1 | 118.82 (12) | C16—C21—H21 | 120.7 |
C9—C8—P1 | 120.78 (12) | C20—C21—H21 | 120.7 |
O1—S1—O2—O2 | 0.00 (7) | C2—C1—C6—N1 | −178.06 (13) |
O3—S1—O2—O2 | 0.00 (4) | S1—C1—C6—N1 | −3.16 (19) |
C1—S1—O2—O2 | 0.00 (6) | P1—N1—C6—C5 | −29.7 (2) |
C14—P1—N1—C6 | −160.95 (12) | P1—N1—C6—C1 | 149.70 (12) |
C15—P1—N1—C6 | −42.91 (15) | N1—P1—C8—C13 | 30.59 (14) |
C8—P1—N1—C6 | 79.22 (14) | C14—P1—C8—C13 | −88.10 (13) |
O1—S1—C1—C2 | 96.24 (13) | C15—P1—C8—C13 | 153.27 (12) |
O3—S1—C1—C2 | −25.20 (13) | N1—P1—C8—C9 | −151.94 (12) |
O2—S1—C1—C2 | −144.27 (12) | C14—P1—C8—C9 | 89.38 (14) |
O2—S1—C1—C2 | −144.27 (12) | C15—P1—C8—C9 | −29.26 (15) |
O1—S1—C1—C6 | −78.68 (13) | C13—C8—C9—C10 | −0.3 (2) |
O3—S1—C1—C6 | 159.88 (12) | P1—C8—C9—C10 | −177.74 (13) |
O2—S1—C1—C6 | 40.81 (13) | C8—C9—C10—C11 | −0.4 (3) |
O2—S1—C1—C6 | 40.81 (13) | C9—C10—C11—C12 | 0.5 (3) |
C6—C1—C2—C3 | 0.7 (2) | C10—C11—C12—C13 | −0.1 (3) |
S1—C1—C2—C3 | −174.27 (11) | C11—C12—C13—C8 | −0.6 (3) |
C1—C2—C3—C4 | −1.8 (2) | C9—C8—C13—C12 | 0.8 (2) |
C1—C2—C3—C7 | 175.96 (14) | P1—C8—C13—C12 | 178.27 (13) |
C2—C3—C4—C5 | 0.9 (2) | C21—C16—C17—C18 | −3.6 (4) |
C7—C3—C4—C5 | −176.87 (15) | C16—C17—C18—C19 | 1.1 (3) |
C3—C4—C5—C6 | 1.1 (2) | C17—C18—C19—C20 | 2.6 (3) |
C4—C5—C6—C1 | −2.2 (2) | C18—C19—C20—C21 | −3.7 (3) |
C4—C5—C6—N1 | 177.15 (14) | C17—C16—C21—C20 | 2.5 (3) |
C2—C1—C6—C5 | 1.3 (2) | C19—C20—C21—C16 | 1.1 (3) |
S1—C1—C6—C5 | 176.21 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2 | 0.80 (2) | 2.09 (2) | 2.7374 (17) | 139 (2) |
N1—H1N···O2i | 0.80 (2) | 2.47 (2) | 3.0311 (17) | 128 (2) |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C15H18NO3PS·C6H6 |
Mr | 401.44 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 9.3696 (2), 10.3141 (2), 11.7579 (3) |
α, β, γ (°) | 68.665 (2), 78.180 (2), 70.630 (2) |
V (Å3) | 993.89 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.27 |
Crystal size (mm) | 0.41 × 0.31 × 0.25 |
Data collection | |
Diffractometer | Agilent Xcalibur (Ruby, Gemini) diffractometer |
Absorption correction | Multi-scan (CrysAlis PRO; Agilent, 2010) |
Tmin, Tmax | 0.939, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 22626, 5263, 4918 |
Rint | 0.017 |
(sin θ/λ)max (Å−1) | 0.684 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.096, 1.05 |
No. of reflections | 5263 |
No. of parameters | 251 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 1.40, −0.42 |
Computer programs: CrysAlis PRO (Agilent, 2010), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2006), PLATON (Spek, 2009) and publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2 | 0.80 (2) | 2.09 (2) | 2.7374 (17) | 139 (2) |
N1—H1N···O2i | 0.80 (2) | 2.47 (2) | 3.0311 (17) | 128 (2) |
Symmetry code: (i) −x+1, −y+1, −z+1. |
Acknowledgements
MSM thanks the Department of Energy, grant DEFG02–08CH11538, and the Kentucky Research Challenge Trust Fund for upgrade of our X-ray facilities. CTB thanks the American Chemical Society Petroleum Research Fund (grant 50401-DN13) for financial support of this research.
References
Agilent (2010). CrysAlis PRO. Agilent Technologies, Yarnton, England. Google Scholar
Brown, M. K., May, T. L., Baxter, C. A. & Hoveyda, A. H. (2007). Angew. Chem. Int. Ed. 46, 1097–1100. Web of Science CSD CrossRef CAS Google Scholar
Bruneau, C. & Achard, M. (2012). Coord. Chem. Rev. 256, 525–536. Web of Science CrossRef CAS Google Scholar
Burns, C. T., Shang, S., Thapa, R. & Mashuta, M. S. (2012). Tetrahedron Lett. 53, 4832–4835. Web of Science CSD CrossRef CAS Google Scholar
Desiraju, G. R. (1995). Angew. Chem. Int. Ed. 34, 2311–2327. CrossRef CAS Web of Science Google Scholar
Drent, E., van Dijk, R., van Ginkel, R., van Oort, B. & Pugh, R. I. (2002). Chem. Commun. pp. 744–745. Web of Science CrossRef Google Scholar
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849–854. Web of Science CrossRef CAS IUCr Journals Google Scholar
Lee, Y., Akiyama, K., Gillingham, D. G., Brown, M. K. & Hoveyda, A. H. (2008). J. Am. Chem. Soc. 130, 446–447. Web of Science CrossRef PubMed CAS Google Scholar
Lee, Y. & Hoveyda, A. H. (2009). J. Am. Chem. Soc. 131, 3160–3161. Web of Science CrossRef PubMed CAS Google Scholar
Lee, Y., Jang, H. & Hoveyda, A. H. (2009). J. Am. Chem. Soc. 131, 18234–18235. Web of Science CrossRef PubMed CAS Google Scholar
Liu, C.-Y., Chen, D.-Y., Peng, S.-M., Cheng, M.-C. & Liu, S.-T. (1995). Organometallics, 14, 1983–1991. CSD CrossRef CAS Web of Science Google Scholar
Macrae, C. F., Edgington, P. R., McCabe, P., Pidcock, E., Shields, G. P., Taylor, R., Towler, M. & van de Streek, J. (2006). J. Appl. Cryst. 39, 453–457. Web of Science CrossRef CAS IUCr Journals Google Scholar
Nakamura, A., Ito, S. & Nozaki, K. (2009). Chem. Rev. 109, 5215–5244. Web of Science CrossRef PubMed CAS Google Scholar
Perrotin, P., McCahill, J. S. J., Wu, G. & Scott, S. L. (2011). Chem. Commun. 47, 6948–6950. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spencer, L. P., Altwer, R., Wei, P., Gelmini, L., Gauld, J. & Stephan, D. W. (2003). Organometallics, 22, 3841–3854. Web of Science CSD CrossRef CAS Google Scholar
Wallis, C. J., Kraft, I. L., Murphy, J. N., Patrick, B. O. & Mehrkhodavandi, P. (2009). Organometallics, 28, 3889–3895. Web of Science CSD CrossRef CAS Google Scholar
Wallis, C. J., Kraft, I. L., Patrick, B. O. & Mehrkhodavandi, P. (2010). Dalton Trans. 39, 541–547. Web of Science CSD CrossRef CAS Google Scholar
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920–925. Web of Science CrossRef CAS IUCr Journals Google Scholar
Zhang, C., Sun, W.-H. & Wang, Z.-X. (2006). Eur. J. Inorg. Chem. 23, 4895–4902. Web of Science CSD CrossRef Google Scholar
Zhou, X. & Jordan, R. F. (2011). Organometallics, 30, 4632–4642. Web of Science CSD CrossRef CAS 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.
Exocyclic phosphinimine functionalized benzenesulfonate ligands have the potential to be used in the synthesis of new transition and main group metal catalysts with numerous applications. Few examples exist where an exocyclic phosphinimine has been incorporated into a mixed donor ligand system for use in the preparation of metal complexes (Liu et al., 1995; Spencer et al., 2003; Zhang et al., 2006; Wallis et al., 2009, 2010). There are also a very limited number of ortho-substituted arenesulfonate bidentate ligands used for catalytic reactions. 2-Phosphine-arenesulfonate chelates have received considerable attention in the last decade as ancillary ligands for group 10 olefin insertion polymerization catalysts (Drent et al., 2002; Nakamura et al., 2009; Perrotin et al., 2011) and have also been used to stabilize ruthenium complexes that catalyze allylic alkylations of heterocycles and amines (Bruneau & Achard, 2012). Chiral and achiral ortho-N-heterocyclic-carbene-benzenesulfonate ligands have been used in the copper-catalyzed asymmetric conjugate addition, allylic alkylation, hydroboration and diboronation reactions (Brown et al., 2007; Lee et al., 2008, 2009; Lee & Hoveyda, 2009) as well as being explored as catalysts that promote insertion of unsaturated molecules into a palladium carbon bond (Zhou & Jordan, 2011). The title compound, (I), has been synthesized as an air-stable precursor of 2-dimethyl(phenyl)phosphinimine-5-methylbenzenesulfonate which is being explored as an ancillary ligand for metal mediated transformations.
The structures of the related 2-triphenylphosphiniminium-5-methylbenzenesulfonate and 2-diphenyl(methyl)phosphiniminium-5-methylbenzenesulfonate (Burns et al., 2012), have been reported recently and contain the same primary structural features as those found in (I). All three structures confirm the zwitterionic nature of these compounds via presence of the phosphiniminium group in which the nitrogen is protonated and the sulfonate anion is located ortho to the protonated phosphinimine. The P(1)—N(1) bond distance (Table 1) in (I) is statistically the same as the phosphiniminium P—N bonds in both 2-triphenylphosphiniminium-5-methylbenzenesulfonate [1.6327 (17) Å] and 2-diphenyl(methyl)phosphiniminium-5-methylbenzenesulfonate [1.6380 (12) Å] (Burns et al., 2012) indicative of single bond character. The iminium hydrogen forms a strong intramolecular hydrogen bond to one sulfonate oxygen atom N1—H1n- - –O2 (Table 2), (Desiraju, 1995). This hydrogen is also involved in an intermolecular interaction with the nearest symmetry generated O2 atom N1—H1n- - –O2i (Table 2). The smaller phosphiniminium Me2PPh substituent in (I) has much less steric impact than the Ph3P and Ph2PMe groups in the two previously reported zwitterions. Comparison of relevant torsion angles in the three structures shows that the phosphorous atom of the phosphiniminium group in (I) is situated above the plane of the aryl ring of the 5-methylbenzenesulfonate fragment with a C5—C6—N1—P1 torsion angle of 29.7 (2)° whereas the phosphorous atom of the phosphiniminium group in the triphenylphosphiniminium and diphenyl(methyl)phosphiniminium zwitterion structures is located below the plane of the aryl ring with corresponding torsion angles of 39.2 (3)° and 14.9 (2)° respectively (Burns et al., 2012).