organic compounds
4-Hydroxy-2,2,6,6-tetramethylpiperidinium perchlorate
aSchool of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, People's Republic of China
*Correspondence e-mail: flyingyting@yahoo.com.cn
In the title salt, C9H20NO+·ClO4−, intermolecular hydrogen bonds are observed, which determine the crystal packing.
Experimental
Crystal data
|
Refinement
|
Data collection: CrystalClear (Rigaku/MSC, 2005); cell CrystalClear; data reduction: CrystalClear; 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/S1600536808002997/hg2373sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808002997/hg2373Isup2.hkl
2,2,6,6-tetramethylpiperidin-4-ol (3.2 mmol,0.5 g) was dissolved in perchloric acid solution(2.5 mol/l, 3 ml). Block shaped colorless crystals grew with slow evaporation of solvent.
All H atoms were constrained; positioned geometrically (C—H = 0.99–1.00 Å) and refined as riding with Uiso(H) = 1.2Ueq(carrier) or 1.5eq(methyl groups).
Data collection: CrystalClear (Rigaku/MSC, 2005); cell
CrystalClear (Rigaku/MSC, 2005); data reduction: CrystalClear (Rigaku/MSC, 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. A view of the molecule (I). Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. |
C9H20NO+·ClO4− | F(000) = 552 |
Mr = 257.71 | Dx = 1.376 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2824 reflections |
a = 7.5712 (15) Å | θ = 2.3–28.1° |
b = 13.927 (3) Å | µ = 0.31 mm−1 |
c = 12.007 (2) Å | T = 113 K |
β = 100.71 (3)° | Block, colorless |
V = 1244.0 (4) Å3 | 0.12 × 0.04 × 0.04 mm |
Z = 4 |
Rigaku Saturn diffractometer | 2183 independent reflections |
Radiation source: rotating anode | 1797 reflections with I > 2σ(I) |
Confocal monochromator | Rint = 0.046 |
Detector resolution: 7.31 pixels mm-1 | θmax = 25.0°, θmin = 2.3° |
ω and ϕ scans | h = −9→7 |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | k = −11→16 |
Tmin = 0.963, Tmax = 0.988 | l = −13→14 |
7480 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)] = 0.045 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.127 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.10 | w = 1/[σ2(Fo2) + (0.0763P)2 + 0.0376P] where P = (Fo2 + 2Fc2)/3 |
2183 reflections | (Δ/σ)max = 0.001 |
157 parameters | Δρmax = 0.60 e Å−3 |
0 restraints | Δρmin = −0.48 e Å−3 |
C9H20NO+·ClO4− | V = 1244.0 (4) Å3 |
Mr = 257.71 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 7.5712 (15) Å | µ = 0.31 mm−1 |
b = 13.927 (3) Å | T = 113 K |
c = 12.007 (2) Å | 0.12 × 0.04 × 0.04 mm |
β = 100.71 (3)° |
Rigaku Saturn diffractometer | 2183 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) | 1797 reflections with I > 2σ(I) |
Tmin = 0.963, Tmax = 0.988 | Rint = 0.046 |
7480 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 0 restraints |
wR(F2) = 0.127 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.10 | Δρmax = 0.60 e Å−3 |
2183 reflections | Δρmin = −0.48 e Å−3 |
157 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 | ||
O1 | 0.8859 (2) | 0.66280 (10) | 0.28774 (12) | 0.0224 (4) | |
H1 | 0.9165 | 0.6118 | 0.2631 | 0.034* | |
N1 | 0.6419 (2) | 0.74364 (13) | −0.04347 (15) | 0.0172 (4) | |
H1A | 0.694 (4) | 0.6951 (17) | −0.078 (2) | 0.027 (6)* | |
H1B | 0.570 (4) | 0.7733 (17) | −0.099 (2) | 0.029 (7)* | |
C1 | 0.7957 (3) | 0.80834 (14) | 0.01410 (18) | 0.0200 (5) | |
C2 | 0.8982 (3) | 0.75325 (14) | 0.11605 (18) | 0.0216 (5) | |
H2A | 0.9652 | 0.7001 | 0.0882 | 0.026* | |
H2B | 0.9874 | 0.7969 | 0.1609 | 0.026* | |
C3 | 0.7796 (3) | 0.71199 (14) | 0.19322 (16) | 0.0184 (5) | |
H3 | 0.7150 | 0.7661 | 0.2230 | 0.022* | |
C4 | 0.6403 (3) | 0.64456 (14) | 0.12660 (17) | 0.0187 (5) | |
H4A | 0.5646 | 0.6181 | 0.1782 | 0.022* | |
H4B | 0.7030 | 0.5902 | 0.0977 | 0.022* | |
C5 | 0.5198 (3) | 0.69386 (14) | 0.02718 (17) | 0.0188 (5) | |
C6 | 0.3909 (3) | 0.76627 (15) | 0.06528 (19) | 0.0240 (5) | |
H6A | 0.3364 | 0.8060 | 0.0006 | 0.036* | |
H6B | 0.4574 | 0.8073 | 0.1250 | 0.036* | |
H6C | 0.2963 | 0.7318 | 0.0946 | 0.036* | |
C7 | 0.4117 (3) | 0.62072 (15) | −0.05253 (19) | 0.0248 (5) | |
H7A | 0.4940 | 0.5759 | −0.0797 | 0.037* | |
H7B | 0.3397 | 0.6542 | −0.1172 | 0.037* | |
H7C | 0.3319 | 0.5851 | −0.0118 | 0.037* | |
C8 | 0.9141 (3) | 0.82429 (17) | −0.0744 (2) | 0.0292 (6) | |
H8A | 1.0164 | 0.8651 | −0.0422 | 0.044* | |
H8B | 0.8437 | 0.8557 | −0.1412 | 0.044* | |
H8C | 0.9582 | 0.7623 | −0.0965 | 0.044* | |
C9 | 0.7249 (3) | 0.90544 (15) | 0.0458 (2) | 0.0277 (5) | |
H9A | 0.6607 | 0.8970 | 0.1088 | 0.042* | |
H9B | 0.6427 | 0.9320 | −0.0197 | 0.042* | |
H9C | 0.8259 | 0.9496 | 0.0685 | 0.042* | |
Cl1 | 0.15810 (8) | 0.46849 (3) | 0.19458 (5) | 0.0256 (2) | |
O2 | −0.0091 (3) | 0.47048 (12) | 0.23547 (17) | 0.0431 (5) | |
O3 | 0.2067 (3) | 0.56462 (12) | 0.17449 (16) | 0.0423 (5) | |
O4 | 0.1359 (3) | 0.41692 (15) | 0.08989 (19) | 0.0627 (7) | |
O5 | 0.2955 (3) | 0.42562 (16) | 0.2770 (2) | 0.0603 (7) |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0226 (9) | 0.0236 (8) | 0.0180 (7) | 0.0044 (6) | −0.0039 (7) | −0.0023 (6) |
N1 | 0.0133 (10) | 0.0196 (9) | 0.0184 (9) | 0.0023 (7) | 0.0026 (8) | 0.0006 (7) |
C1 | 0.0124 (11) | 0.0205 (11) | 0.0266 (12) | −0.0036 (8) | 0.0023 (10) | −0.0006 (8) |
C2 | 0.0135 (11) | 0.0233 (11) | 0.0262 (11) | −0.0014 (8) | −0.0012 (10) | −0.0017 (8) |
C3 | 0.0153 (12) | 0.0205 (10) | 0.0173 (10) | 0.0024 (8) | −0.0021 (9) | −0.0012 (8) |
C4 | 0.0159 (11) | 0.0203 (10) | 0.0191 (11) | −0.0012 (8) | 0.0009 (9) | 0.0001 (8) |
C5 | 0.0146 (12) | 0.0202 (10) | 0.0218 (11) | −0.0040 (8) | 0.0040 (10) | 0.0013 (8) |
C6 | 0.0141 (12) | 0.0292 (12) | 0.0300 (12) | 0.0026 (9) | 0.0075 (10) | 0.0034 (9) |
C7 | 0.0222 (13) | 0.0248 (11) | 0.0240 (12) | −0.0065 (9) | −0.0043 (10) | 0.0025 (9) |
C8 | 0.0194 (13) | 0.0350 (13) | 0.0344 (13) | 0.0002 (10) | 0.0081 (11) | 0.0099 (10) |
C9 | 0.0241 (13) | 0.0215 (12) | 0.0365 (13) | −0.0024 (9) | 0.0030 (11) | −0.0001 (9) |
Cl1 | 0.0215 (4) | 0.0218 (3) | 0.0361 (4) | 0.0047 (2) | 0.0119 (3) | 0.0035 (2) |
O2 | 0.0254 (11) | 0.0522 (12) | 0.0575 (13) | 0.0051 (8) | 0.0223 (10) | 0.0141 (8) |
O3 | 0.0465 (13) | 0.0299 (10) | 0.0501 (11) | −0.0063 (8) | 0.0079 (10) | 0.0074 (8) |
O4 | 0.0644 (16) | 0.0566 (13) | 0.0694 (15) | 0.0081 (11) | 0.0189 (13) | −0.0359 (11) |
O5 | 0.0340 (12) | 0.0705 (15) | 0.0760 (15) | 0.0229 (10) | 0.0091 (12) | 0.0437 (12) |
O1—C3 | 1.437 (2) | C5—C6 | 1.532 (3) |
O1—H1 | 0.8199 | C6—H6A | 0.9800 |
N1—C1 | 1.532 (3) | C6—H6B | 0.9800 |
N1—C5 | 1.532 (3) | C6—H6C | 0.9800 |
N1—H1A | 0.92 (3) | C7—H7A | 0.9800 |
N1—H1B | 0.88 (3) | C7—H7B | 0.9800 |
C1—C9 | 1.528 (3) | C7—H7C | 0.9800 |
C1—C2 | 1.529 (3) | C8—H8A | 0.9800 |
C1—C8 | 1.529 (3) | C8—H8B | 0.9800 |
C2—C3 | 1.518 (3) | C8—H8C | 0.9800 |
C2—H2A | 0.9900 | C9—H9A | 0.9800 |
C2—H2B | 0.9900 | C9—H9B | 0.9800 |
C3—C4 | 1.523 (3) | C9—H9C | 0.9800 |
C3—H3 | 1.0000 | Cl1—O3 | 1.4210 (18) |
C4—C5 | 1.524 (3) | Cl1—O5 | 1.427 (2) |
C4—H4A | 0.9900 | Cl1—O4 | 1.430 (2) |
C4—H4B | 0.9900 | Cl1—O2 | 1.4408 (18) |
C5—C7 | 1.527 (3) | ||
C3—O1—H1 | 106.4 | C4—C5—N1 | 107.61 (17) |
C1—N1—C5 | 120.17 (16) | C7—C5—N1 | 105.26 (16) |
C1—N1—H1A | 106.5 (16) | C6—C5—N1 | 110.57 (16) |
C5—N1—H1A | 105.7 (15) | C5—C6—H6A | 109.5 |
C1—N1—H1B | 112.1 (16) | C5—C6—H6B | 109.5 |
C5—N1—H1B | 106.2 (16) | H6A—C6—H6B | 109.5 |
H1A—N1—H1B | 105 (2) | C5—C6—H6C | 109.5 |
C9—C1—C2 | 113.22 (18) | H6A—C6—H6C | 109.5 |
C9—C1—C8 | 108.82 (17) | H6B—C6—H6C | 109.5 |
C2—C1—C8 | 110.68 (18) | C5—C7—H7A | 109.5 |
C9—C1—N1 | 111.14 (18) | C5—C7—H7B | 109.5 |
C2—C1—N1 | 107.24 (16) | H7A—C7—H7B | 109.5 |
C8—C1—N1 | 105.46 (17) | C5—C7—H7C | 109.5 |
C3—C2—C1 | 114.12 (18) | H7A—C7—H7C | 109.5 |
C3—C2—H2A | 108.7 | H7B—C7—H7C | 109.5 |
C1—C2—H2A | 108.7 | C1—C8—H8A | 109.5 |
C3—C2—H2B | 108.7 | C1—C8—H8B | 109.5 |
C1—C2—H2B | 108.7 | H8A—C8—H8B | 109.5 |
H2A—C2—H2B | 107.6 | C1—C8—H8C | 109.5 |
O1—C3—C2 | 110.75 (17) | H8A—C8—H8C | 109.5 |
O1—C3—C4 | 110.62 (16) | H8B—C8—H8C | 109.5 |
C2—C3—C4 | 110.06 (16) | C1—C9—H9A | 109.5 |
O1—C3—H3 | 108.4 | C1—C9—H9B | 109.5 |
C2—C3—H3 | 108.4 | H9A—C9—H9B | 109.5 |
C4—C3—H3 | 108.4 | C1—C9—H9C | 109.5 |
C3—C4—C5 | 112.87 (16) | H9A—C9—H9C | 109.5 |
C3—C4—H4A | 109.0 | H9B—C9—H9C | 109.5 |
C5—C4—H4A | 109.0 | O3—Cl1—O5 | 109.47 (13) |
C3—C4—H4B | 109.0 | O3—Cl1—O4 | 108.40 (13) |
C5—C4—H4B | 109.0 | O5—Cl1—O4 | 110.53 (14) |
H4A—C4—H4B | 107.8 | O3—Cl1—O2 | 108.16 (11) |
C4—C5—C7 | 111.31 (16) | O5—Cl1—O2 | 110.23 (11) |
C4—C5—C6 | 112.63 (16) | O4—Cl1—O2 | 110.00 (13) |
C7—C5—C6 | 109.21 (18) | ||
C5—N1—C1—C9 | −76.1 (2) | O1—C3—C4—C5 | 178.28 (15) |
C5—N1—C1—C2 | 48.2 (2) | C2—C3—C4—C5 | −59.0 (2) |
C5—N1—C1—C8 | 166.19 (18) | C3—C4—C5—C7 | 167.26 (17) |
C9—C1—C2—C3 | 72.5 (2) | C3—C4—C5—C6 | −69.7 (2) |
C8—C1—C2—C3 | −165.05 (17) | C3—C4—C5—N1 | 52.4 (2) |
N1—C1—C2—C3 | −50.5 (2) | C1—N1—C5—C4 | −49.6 (2) |
C1—C2—C3—O1 | −179.04 (15) | C1—N1—C5—C7 | −168.37 (17) |
C1—C2—C3—C4 | 58.3 (2) | C1—N1—C5—C6 | 73.8 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O4i | 0.92 (3) | 2.05 (3) | 2.914 (3) | 157 (2) |
N1—H1B···O1ii | 0.88 (3) | 1.97 (3) | 2.847 (3) | 173 (2) |
O1—H1···O2iii | 0.82 | 2.09 | 2.896 (2) | 167 |
O1—H1···Cl1iii | 0.82 | 2.93 | 3.6985 (16) | 158 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) x−1/2, −y+3/2, z−1/2; (iii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C9H20NO+·ClO4− |
Mr | 257.71 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 113 |
a, b, c (Å) | 7.5712 (15), 13.927 (3), 12.007 (2) |
β (°) | 100.71 (3) |
V (Å3) | 1244.0 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.31 |
Crystal size (mm) | 0.12 × 0.04 × 0.04 |
Data collection | |
Diffractometer | Rigaku Saturn diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku/MSC, 2005) |
Tmin, Tmax | 0.963, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7480, 2183, 1797 |
Rint | 0.046 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.127, 1.10 |
No. of reflections | 2183 |
No. of parameters | 157 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.60, −0.48 |
Computer programs: CrystalClear (Rigaku/MSC, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O4i | 0.92 (3) | 2.05 (3) | 2.914 (3) | 157 (2) |
N1—H1B···O1ii | 0.88 (3) | 1.97 (3) | 2.847 (3) | 173 (2) |
O1—H1···O2iii | 0.82 | 2.09 | 2.896 (2) | 167.4 |
O1—H1···Cl1iii | 0.82 | 2.93 | 3.6985 (16) | 157.9 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) x−1/2, −y+3/2, z−1/2; (iii) x+1, y, z. |
References
Borzatta, V. & Carrozza, P. (1991). Eur. Patent No. EP 0 462 069. Google Scholar
Rigaku/MSC (2005). CrystalClear and CrystalStructure. Rigaku/MSC, The Woodlands, Texas, USA. Google Scholar
Sheldrick, G. M. (2008). 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.
2,2,6,6-Tetramethyl-4-hydroxy-piperidin-4-ol is a very important intermediate in the synthesis of hindered light stabilizers (Borzatta & Carrozza, 1991). We report here the crystal structure (2,2,6,6-tetramethyl-4-hydroxypiperidinium perchlorate) (Fig. 1).
Intermolecular N—H···O, O—H···O, O—H···Cl hydrogen bonds are observed which help to establish the crystal packing. The piperidine ring adopts chair conformation.