organic compounds
Piperazine-1,4-diium naphthalene-1,5-disulfonate
aOrdered Matter Science Research Center, Southeast University, Nanjing 211189, People's Republic of China
*Correspondence e-mail: seuwei@126.com
The title molecular salt, C4H12N22+·C10H6O6S22−, consists of a piperazinium cation and a 1,5-naphthalenedisulfonate anion. Crystallographic inversion centers are situated at the center of the ring of the dication as well as at the midpoint of the central carbon–carbon bond in the dianion. In the crystal, intermolecular N—H⋯O hydrogen bonds link the cations and anions.
Related literature
The title compound was obtained during attempts to obtain dielectric-ferroelectric compounds. For general background to ferroelectric metal-organic frameworks, see: Wu et al. (2011); Ye et al. (2006); Zhang et al. (2008, 2010); Fu et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 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
https://doi.org/10.1107/S1600536811038955/vm2121sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811038955/vm2121Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811038955/vm2121Isup3.cml
The title compound was obtained by the addition of 1,5-naphthalenedisulfonate acid (3.62 g, 0.01 mol) to a solution of piperazine (0.88 g, 0.01 mol) in water, in the stoichiometric ratio 1: 1. Good quality single crystals were obtained by slow evaporation after two days (yield: 48%).
All H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with C—H = 0.93 Å-0.97 Å, N—H = 0.90 Å and with Uiso(H) = 1.2 Uiso(C, O) or 1.5 Uiso(C) for methyl H atoms.
Dielectric-ferroelectrics are an interesting class of materials, comprising organic ligands,metal-organic coordination compounds and organic-inorganic hybrids (Fu et al., 2009; Zhang et al., 2010; Zhang et al., 2008; Ye et al., 2006). Unfortunately, the
of the title compound as a function of temperature indicates that the permittivity is basically temperature-independent. Below the melting point (402-403K) of the compound, we have found that the title compound has no dielectric disuniformity from 80 K to 405 K. Here we descibe the of this compound.The
of the title compound consists of a half piperazinium cation and a half 1,5-naphthalenedisulfonate anion (Fig. 1). The complete complete molecular structures are generated by inversion centers at the center of the piperazinium ring and at the midpoint of the central carbon-carbon bond in the naphthalene ring. The best planes through the piperazinium ring and the naphthalene ring make a dihedral angle of 80.96 (8)°. The cations and anions are connected by intermolecular N—H···O hydrogen bonds, which contribute to the stability of the (Fig. 2 and Table 1).The title compound was obtained during attempts to produce dielectric-ferroelectric compounds. For general background to ferroelectric metal-organic frameworks, see: Wu et al. (2011); Ye et al. (2006); Zhang et al. (2008, 2010); Fu et al. (2009).
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXS97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C4H12N22+·C10H6O6S22− | Z = 2 |
Mr = 374.42 | F(000) = 392 |
Monoclinic, P21/c | Dx = 1.562 Mg m−3 |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 11.997 (2) Å | θ = 3.0–27.5° |
b = 7.2959 (15) Å | µ = 0.37 mm−1 |
c = 9.1453 (18) Å | T = 293 K |
β = 96.00 (3)° | Block, colorless |
V = 796.1 (3) Å3 | 0.20 × 0.20 × 0.20 mm |
Rigaku SCXmini diffractometer | 1827 independent reflections |
Radiation source: fine-focus sealed tube | 1629 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.031 |
CCD_Profile_fitting scans | θmax = 27.5°, θmin = 3.3° |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | h = −15→15 |
Tmin = 0.955, Tmax = 0.955 | k = −9→9 |
7956 measured reflections | l = −11→11 |
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)] = 0.034 | H-atom parameters constrained |
wR(F2) = 0.088 | w = 1/[σ2(Fo2) + (0.038P)2 + 0.4026P] where P = (Fo2 + 2Fc2)/3 |
S = 1.11 | (Δ/σ)max = 0.001 |
1827 reflections | Δρmax = 0.26 e Å−3 |
109 parameters | Δρmin = −0.36 e Å−3 |
0 restraints | Extinction correction: SHELXL |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0 |
C4H12N22+·C10H6O6S22− | V = 796.1 (3) Å3 |
Mr = 374.42 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.997 (2) Å | µ = 0.37 mm−1 |
b = 7.2959 (15) Å | T = 293 K |
c = 9.1453 (18) Å | 0.20 × 0.20 × 0.20 mm |
β = 96.00 (3)° |
Rigaku SCXmini diffractometer | 1827 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 1629 reflections with I > 2σ(I) |
Tmin = 0.955, Tmax = 0.955 | Rint = 0.031 |
7956 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.088 | H-atom parameters constrained |
S = 1.11 | Δρmax = 0.26 e Å−3 |
1827 reflections | Δρmin = −0.36 e Å−3 |
109 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 | ||
S1 | 0.72018 (3) | 0.02705 (6) | 0.55200 (4) | 0.02178 (13) | |
C11 | 0.94220 (13) | −0.0264 (2) | 0.49266 (17) | 0.0209 (3) | |
C12 | 0.86385 (13) | 0.0911 (2) | 0.55496 (17) | 0.0213 (3) | |
C7 | 0.89809 (14) | 0.2508 (2) | 0.6239 (2) | 0.0291 (4) | |
H7 | 0.8460 | 0.3258 | 0.6632 | 0.035* | |
C16 | 0.91084 (14) | −0.1936 (2) | 0.4198 (2) | 0.0287 (4) | |
H16 | 0.8360 | −0.2294 | 0.4101 | 0.034* | |
C8 | 1.01178 (15) | 0.3021 (3) | 0.6358 (2) | 0.0347 (4) | |
H8 | 1.0342 | 0.4115 | 0.6822 | 0.042* | |
N1 | 0.39695 (11) | 0.03920 (19) | 0.90988 (15) | 0.0230 (3) | |
H1A | 0.3451 | 0.1206 | 0.8730 | 0.028* | |
H1B | 0.3762 | −0.0722 | 0.8746 | 0.028* | |
C5 | 0.40092 (15) | 0.0374 (3) | 1.07288 (19) | 0.0292 (4) | |
H5A | 0.3293 | −0.0036 | 1.1011 | 0.035* | |
H5B | 0.4143 | 0.1607 | 1.1104 | 0.035* | |
C1 | 0.50731 (14) | 0.0883 (3) | 0.86030 (18) | 0.0270 (4) | |
H1C | 0.5256 | 0.2139 | 0.8882 | 0.032* | |
H1D | 0.5027 | 0.0802 | 0.7540 | 0.032* | |
O1 | 0.67590 (11) | 0.0023 (2) | 0.39986 (15) | 0.0384 (3) | |
O3 | 0.66605 (10) | 0.17560 (17) | 0.62410 (15) | 0.0334 (3) | |
O2 | 0.72065 (10) | −0.14134 (17) | 0.63779 (14) | 0.0312 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0183 (2) | 0.0221 (2) | 0.0249 (2) | −0.00043 (14) | 0.00176 (15) | 0.00085 (15) |
C11 | 0.0206 (8) | 0.0213 (8) | 0.0205 (8) | −0.0020 (6) | 0.0011 (6) | −0.0019 (6) |
C12 | 0.0196 (7) | 0.0220 (8) | 0.0221 (8) | −0.0016 (6) | 0.0015 (6) | 0.0005 (6) |
C7 | 0.0253 (8) | 0.0261 (9) | 0.0362 (10) | 0.0007 (7) | 0.0047 (7) | −0.0093 (7) |
C16 | 0.0225 (8) | 0.0279 (9) | 0.0357 (10) | −0.0072 (7) | 0.0024 (7) | −0.0091 (8) |
C8 | 0.0309 (9) | 0.0290 (9) | 0.0440 (11) | −0.0080 (7) | 0.0032 (8) | −0.0176 (8) |
N1 | 0.0229 (7) | 0.0229 (7) | 0.0221 (7) | 0.0017 (5) | −0.0022 (5) | 0.0011 (5) |
C5 | 0.0282 (9) | 0.0363 (10) | 0.0235 (8) | 0.0051 (7) | 0.0047 (7) | 0.0003 (7) |
C1 | 0.0275 (8) | 0.0321 (9) | 0.0212 (8) | −0.0028 (7) | 0.0012 (6) | 0.0070 (7) |
O1 | 0.0290 (7) | 0.0556 (9) | 0.0284 (7) | −0.0015 (6) | −0.0070 (5) | −0.0012 (6) |
O3 | 0.0273 (6) | 0.0267 (7) | 0.0478 (8) | 0.0040 (5) | 0.0120 (6) | −0.0017 (6) |
O2 | 0.0324 (7) | 0.0230 (6) | 0.0386 (7) | −0.0042 (5) | 0.0051 (5) | 0.0053 (5) |
S1—O1 | 1.4477 (14) | C8—C16i | 1.359 (3) |
S1—O3 | 1.4562 (13) | C8—H8 | 0.9300 |
S1—O2 | 1.4574 (13) | N1—C5 | 1.486 (2) |
S1—C12 | 1.7834 (16) | N1—C1 | 1.487 (2) |
C11—C16 | 1.422 (2) | N1—H1A | 0.9000 |
C11—C11i | 1.432 (3) | N1—H1B | 0.9000 |
C11—C12 | 1.434 (2) | C5—C1ii | 1.512 (2) |
C12—C7 | 1.367 (2) | C5—H5A | 0.9700 |
C7—C8 | 1.408 (2) | C5—H5B | 0.9700 |
C7—H7 | 0.9300 | C1—C5ii | 1.512 (2) |
C16—C8i | 1.359 (3) | C1—H1C | 0.9700 |
C16—H16 | 0.9300 | C1—H1D | 0.9700 |
O1—S1—O3 | 113.07 (8) | C7—C8—H8 | 119.6 |
O1—S1—O2 | 113.12 (8) | C5—N1—C1 | 111.82 (13) |
O3—S1—O2 | 111.13 (8) | C5—N1—H1A | 109.3 |
O1—S1—C12 | 107.70 (8) | C1—N1—H1A | 109.3 |
O3—S1—C12 | 105.90 (8) | C5—N1—H1B | 109.3 |
O2—S1—C12 | 105.28 (8) | C1—N1—H1B | 109.3 |
C16—C11—C11i | 118.75 (18) | H1A—N1—H1B | 107.9 |
C16—C11—C12 | 123.17 (15) | N1—C5—C1ii | 110.87 (14) |
C11i—C11—C12 | 118.07 (18) | N1—C5—H5A | 109.5 |
C7—C12—C11 | 121.01 (15) | C1ii—C5—H5A | 109.5 |
C7—C12—S1 | 118.27 (13) | N1—C5—H5B | 109.5 |
C11—C12—S1 | 120.66 (12) | C1ii—C5—H5B | 109.5 |
C12—C7—C8 | 120.27 (16) | H5A—C5—H5B | 108.1 |
C12—C7—H7 | 119.9 | N1—C1—C5ii | 111.37 (14) |
C8—C7—H7 | 119.9 | N1—C1—H1C | 109.4 |
C8i—C16—C11 | 121.18 (16) | C5ii—C1—H1C | 109.4 |
C8i—C16—H16 | 119.4 | N1—C1—H1D | 109.4 |
C11—C16—H16 | 119.4 | C5ii—C1—H1D | 109.4 |
C16i—C8—C7 | 120.71 (16) | H1C—C1—H1D | 108.0 |
C16i—C8—H8 | 119.6 |
Symmetry codes: (i) −x+2, −y, −z+1; (ii) −x+1, −y, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2iii | 0.90 | 1.91 | 2.7357 (19) | 153 |
N1—H1B···O3iv | 0.90 | 1.91 | 2.7670 (19) | 159 |
Symmetry codes: (iii) −x+1, y+1/2, −z+3/2; (iv) −x+1, y−1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C4H12N22+·C10H6O6S22− |
Mr | 374.42 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 11.997 (2), 7.2959 (15), 9.1453 (18) |
β (°) | 96.00 (3) |
V (Å3) | 796.1 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.37 |
Crystal size (mm) | 0.20 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Rigaku SCXmini |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.955, 0.955 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7956, 1827, 1629 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.088, 1.11 |
No. of reflections | 1827 |
No. of parameters | 109 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.26, −0.36 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2i | 0.90 | 1.91 | 2.7357 (19) | 152.5 |
N1—H1B···O3ii | 0.90 | 1.91 | 2.7670 (19) | 158.8 |
Symmetry codes: (i) −x+1, y+1/2, −z+3/2; (ii) −x+1, y−1/2, −z+3/2. |
Acknowledgements
The author is grateful to the starter fund of Southeast University for the purchase of the diffractometer.
References
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Dielectric-ferroelectrics are an interesting class of materials, comprising organic ligands,metal-organic coordination compounds and organic-inorganic hybrids (Fu et al., 2009; Zhang et al., 2010; Zhang et al., 2008; Ye et al., 2006). Unfortunately, the dielectric constant of the title compound as a function of temperature indicates that the permittivity is basically temperature-independent. Below the melting point (402-403K) of the compound, we have found that the title compound has no dielectric disuniformity from 80 K to 405 K. Here we descibe the crystal structure of this compound.
The asymmetric unit of the title compound consists of a half piperazinium cation and a half 1,5-naphthalenedisulfonate anion (Fig. 1). The complete complete molecular structures are generated by inversion centers at the center of the piperazinium ring and at the midpoint of the central carbon-carbon bond in the naphthalene ring. The best planes through the piperazinium ring and the naphthalene ring make a dihedral angle of 80.96 (8)°. The cations and anions are connected by intermolecular N—H···O hydrogen bonds, which contribute to the stability of the crystal structure (Fig. 2 and Table 1).