organic compounds
Creatinium perchlorate
aLaboratoire des Structures, Propriétés et Interactions Interatomiques, Centre Universitaire de Khenchela, 40000 Khenchela, Algeria, and bLaboratoire des Multimatériaux et Interfaces, UMR 5615, Université Claude Bernard Lyon1, 69622 Villeurbanne Cedex, France
*Correspondence e-mail: benalicherif@hotmail.com
The title compound, C4H8N3O+·ClO4−, is built up from creatininium cations and perchlorate anions. Crystal cohesion and perchlorate stability are ensured by N—H⋯O hydrogen bonds that together with weak C—H⋯O interactions build up a three-dimensional network.
Related literature
For background on organic–inorganic hybrid materials, see: Benali-Cherif et al. (2004); Hill (1998); Kagan et al. (1999). For a related structure, see: Cherouana et al. (2003); Berrah et al. (2005). For interpretation of the solution acidity effect on NMR chemical shifts, see: Kotsyubynskyy et al. (2004).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: COLLECT (Nonius, 1998); cell SCALEPACK (Otwinowski & Minor, 1997); data reduction: SCALEPACK and DENZO (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2003); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
10.1107/S1600536809003171/dn2425sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809003171/dn2425Isup2.hkl
The title compound (I) was cristallized by slow evaporation at room temperature of an aqueous solution of creatinine and perchloric acid in a 1:1 stochiometric ratio.
The title compound crystallizes in the centrosymmetric
P21/n. All non-H atoms were refined with anisotropic atomic displacement parameters. All H-atoms of the cation entities were located in difference Fourier syntheses and refined as riding model with C—H and N—H bond lengths constrained to 0.96–0.97 Å and 0.834 Å, respectively.Data collection: COLLECT (Nonius, 1998); cell
SCALEPACK (Otwinowski & Minor, 1997); data reduction: SCALEPACK and DENZO (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2003); software used to prepare material for publication: WinGX (Farrugia, 1999).Fig. 1. Asymmetric unit and atom-numbering scheme of creatininium perchlorate. Displacement ellipsoids are drawn at the 30% probability level. H atoms are represented as small sphere of arbitrary radii. H bonds are shown as dashed lines. | |
Fig. 2. Partial packing view showing the hydrogen bond pattern between cation and anion. H atoms not involved in hydrogen bonding have been omitted for clarity. [Symmetry codes: (i) x, y, z+1; (ii) 2-x, 1-y, 1-z] |
C4H8N3O+·ClO4− | F(000) = 440 |
Mr = 213.58 | Dx = 1.689 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 4863 reflections |
a = 5.8023 (3) Å | θ = 2.0–26.0° |
b = 20.7782 (13) Å | µ = 0.45 mm−1 |
c = 7.3250 (4) Å | T = 293 K |
β = 107.947 (4)° | Prism, colourless |
V = 840.14 (8) Å3 | 0.10 × 0.10 × 0.10 mm |
Z = 4 |
Nonius KappaCCD diffractometer | 1209 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.126 |
Graphite monochromator | θmax = 26.0°, θmin = 2.0° |
ω–θ scans | h = −7→6 |
4080 measured reflections | k = −23→25 |
1587 independent reflections | l = −9→9 |
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)] = 0.075 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.230 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.139P)2 + 0.288P] where P = (Fo2 + 2Fc2)/3 |
1586 reflections | (Δ/σ)max = 0.003 |
119 parameters | Δρmax = 0.39 e Å−3 |
0 restraints | Δρmin = −0.42 e Å−3 |
C4H8N3O+·ClO4− | V = 840.14 (8) Å3 |
Mr = 213.58 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 5.8023 (3) Å | µ = 0.45 mm−1 |
b = 20.7782 (13) Å | T = 293 K |
c = 7.3250 (4) Å | 0.10 × 0.10 × 0.10 mm |
β = 107.947 (4)° |
Nonius KappaCCD diffractometer | 1209 reflections with I > 2σ(I) |
4080 measured reflections | Rint = 0.126 |
1587 independent reflections |
R[F2 > 2σ(F2)] = 0.075 | 0 restraints |
wR(F2) = 0.230 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.39 e Å−3 |
1586 reflections | Δρmin = −0.42 e Å−3 |
119 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 | ||
O5 | 0.3264 (6) | 0.74385 (13) | 0.3068 (5) | 0.0803 (9) | |
N1 | 0.4969 (5) | 0.65462 (13) | 0.4848 (5) | 0.0623 (8) | |
H1 | 0.5899 | 0.6421 | 0.4202 | 0.075* | |
N2 | 0.5866 (6) | 0.57013 (14) | 0.7078 (6) | 0.0723 (10) | |
H2A | 0.5667 | 0.5522 | 0.8077 | 0.087* | |
H2B | 0.6800 | 0.5526 | 0.6508 | 0.087* | |
N3 | 0.3285 (5) | 0.65583 (13) | 0.7149 (4) | 0.0577 (8) | |
C2 | 0.4753 (6) | 0.62392 (16) | 0.6428 (5) | 0.0555 (8) | |
C3 | 0.2475 (8) | 0.6361 (2) | 0.8757 (6) | 0.0729 (11) | |
H3A | 0.2690 | 0.5905 | 0.8942 | 0.109* | |
H3B | 0.0793 | 0.6466 | 0.8491 | 0.109* | |
H3C | 0.3409 | 0.6581 | 0.9897 | 0.109* | |
C4 | 0.2340 (7) | 0.71236 (15) | 0.5973 (6) | 0.0622 (10) | |
H4A | 0.2797 | 0.7516 | 0.6713 | 0.075* | |
H4B | 0.0588 | 0.7106 | 0.5451 | 0.075* | |
C5 | 0.3498 (7) | 0.70880 (15) | 0.4411 (6) | 0.0628 (10) | |
Cl1 | 0.89960 (16) | 0.57125 (4) | 0.24596 (14) | 0.0599 (5) | |
O1 | 0.8635 (8) | 0.63394 (16) | 0.1663 (8) | 0.1392 (18) | |
O2 | 0.7200 (7) | 0.52990 (16) | 0.1320 (6) | 0.1017 (12) | |
O3 | 1.1298 (6) | 0.5496 (2) | 0.2543 (6) | 0.1112 (13) | |
O4 | 0.8863 (10) | 0.5762 (3) | 0.4326 (7) | 0.1394 (19) |
U11 | U22 | U33 | U12 | U13 | U23 | |
O5 | 0.105 (2) | 0.0604 (16) | 0.085 (2) | −0.0036 (14) | 0.0420 (17) | 0.0152 (14) |
N1 | 0.0699 (17) | 0.0527 (16) | 0.075 (2) | −0.0020 (13) | 0.0384 (16) | −0.0039 (14) |
N2 | 0.082 (2) | 0.0549 (19) | 0.088 (2) | 0.0147 (14) | 0.0381 (19) | 0.0059 (15) |
N3 | 0.0663 (16) | 0.0474 (15) | 0.0692 (19) | 0.0027 (13) | 0.0353 (14) | 0.0031 (13) |
C2 | 0.0587 (18) | 0.0449 (16) | 0.066 (2) | −0.0009 (14) | 0.0244 (16) | −0.0049 (15) |
C3 | 0.087 (3) | 0.064 (2) | 0.079 (3) | 0.008 (2) | 0.042 (2) | 0.0080 (19) |
C4 | 0.074 (2) | 0.0415 (17) | 0.081 (3) | 0.0048 (15) | 0.0369 (19) | 0.0024 (15) |
C5 | 0.072 (2) | 0.0421 (17) | 0.081 (3) | −0.0083 (15) | 0.0334 (19) | −0.0017 (16) |
Cl1 | 0.0651 (7) | 0.0471 (6) | 0.0728 (7) | 0.0028 (3) | 0.0289 (5) | −0.0067 (3) |
O1 | 0.144 (3) | 0.0463 (18) | 0.198 (5) | 0.0036 (19) | 0.010 (3) | 0.017 (2) |
O2 | 0.110 (2) | 0.074 (2) | 0.108 (3) | −0.0300 (17) | 0.014 (2) | 0.0009 (17) |
O3 | 0.088 (2) | 0.104 (3) | 0.155 (4) | 0.015 (2) | 0.058 (2) | −0.016 (3) |
O4 | 0.164 (4) | 0.187 (5) | 0.091 (3) | 0.029 (3) | 0.074 (3) | −0.019 (3) |
O5—C5 | 1.197 (5) | C3—H3A | 0.9600 |
N1—C2 | 1.361 (4) | C3—H3B | 0.9600 |
N1—C5 | 1.389 (5) | C3—H3C | 0.9600 |
N1—H1 | 0.8600 | C4—C5 | 1.497 (6) |
N2—C2 | 1.305 (4) | C4—H4A | 0.9700 |
N2—H2A | 0.8600 | C4—H4B | 0.9700 |
N2—H2B | 0.8600 | Cl1—O3 | 1.393 (3) |
N3—C2 | 1.312 (4) | Cl1—O4 | 1.396 (4) |
N3—C3 | 1.455 (5) | Cl1—O2 | 1.409 (3) |
N3—C4 | 1.460 (4) | Cl1—O1 | 1.416 (4) |
C2—N1—C5 | 111.4 (3) | H3B—C3—H3C | 109.5 |
C2—N1—H1 | 124.3 | N3—C4—C5 | 103.6 (3) |
C5—N1—H1 | 124.3 | N3—C4—H4A | 111.0 |
C2—N2—H2A | 120.0 | C5—C4—H4A | 111.0 |
C2—N2—H2B | 120.0 | N3—C4—H4B | 111.0 |
H2A—N2—H2B | 120.0 | C5—C4—H4B | 111.0 |
C2—N3—C3 | 126.5 (3) | H4A—C4—H4B | 109.0 |
C2—N3—C4 | 110.0 (3) | O5—C5—N1 | 126.0 (4) |
C3—N3—C4 | 123.3 (3) | O5—C5—C4 | 129.3 (3) |
N2—C2—N3 | 126.6 (4) | N1—C5—C4 | 104.6 (3) |
N2—C2—N1 | 123.1 (3) | O3—Cl1—O4 | 108.8 (3) |
N3—C2—N1 | 110.3 (3) | O3—Cl1—O2 | 110.7 (3) |
N3—C3—H3A | 109.5 | O4—Cl1—O2 | 111.8 (3) |
N3—C3—H3B | 109.5 | O3—Cl1—O1 | 109.5 (3) |
H3A—C3—H3B | 109.5 | O4—Cl1—O1 | 106.8 (3) |
N3—C3—H3C | 109.5 | O2—Cl1—O1 | 109.2 (2) |
H3A—C3—H3C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O4 | 0.86 | 2.18 | 2.905 (5) | 142 |
N2—H2B···O4 | 0.86 | 2.33 | 3.044 (6) | 141 |
N2—H2A···O2i | 0.86 | 2.31 | 3.077 (6) | 148 |
N2—H2A···O2ii | 0.86 | 2.52 | 3.186 (5) | 136 |
N2—H2B···O3iii | 0.86 | 2.39 | 2.947 (5) | 123 |
C3—H3A···O2ii | 0.96 | 2.51 | 3.455 (5) | 168 |
C4—H4A···O1iv | 0.97 | 2.43 | 3.284 (5) | 147 |
Symmetry codes: (i) x, y, z+1; (ii) −x+1, −y+1, −z+1; (iii) −x+2, −y+1, −z+1; (iv) x−1/2, −y+3/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C4H8N3O+·ClO4− |
Mr | 213.58 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 5.8023 (3), 20.7782 (13), 7.3250 (4) |
β (°) | 107.947 (4) |
V (Å3) | 840.14 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.45 |
Crystal size (mm) | 0.10 × 0.10 × 0.10 |
Data collection | |
Diffractometer | Nonius KappaCCD diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4080, 1587, 1209 |
Rint | 0.126 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.075, 0.230, 1.05 |
No. of reflections | 1586 |
No. of parameters | 119 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.39, −0.42 |
Computer programs: COLLECT (Nonius, 1998), SCALEPACK (Otwinowski & Minor, 1997), SCALEPACK and DENZO (Otwinowski & Minor, 1997), SIR92 (Altomare et al., 1993), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2003), WinGX (Farrugia, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O4 | 0.86 | 2.18 | 2.905 (5) | 142.0 |
N2—H2B···O4 | 0.86 | 2.33 | 3.044 (6) | 141.2 |
N2—H2A···O2i | 0.86 | 2.31 | 3.077 (6) | 148.3 |
N2—H2A···O2ii | 0.86 | 2.52 | 3.186 (5) | 135.5 |
N2—H2B···O3iii | 0.86 | 2.39 | 2.947 (5) | 122.5 |
C3—H3A···O2ii | 0.96 | 2.51 | 3.455 (5) | 167.9 |
C4—H4A···O1iv | 0.97 | 2.43 | 3.284 (5) | 146.7 |
Symmetry codes: (i) x, y, z+1; (ii) −x+1, −y+1, −z+1; (iii) −x+2, −y+1, −z+1; (iv) x−1/2, −y+3/2, z+1/2. |
Acknowledgements
We wish to thank the Centre Universitaire de Khenchela for financial support.
References
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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.
Studies of organic-inorganic hybrid materials, including amino acids and various inorganic acids (Benali-Cherif et al., 2004), have received a great deal of attention in recent years, because of their electrical, magnetic and optical properties (Kagan et al., 1999; Hill, 1998).
Creatinine is formed by the metabolism of phosphocreatine, a high-energy molecule which provides a rapid supply of ATP to muscles. Phosphocreatine is converted spontaneously to creatinine on a regular basis. Consequently, creatinine is released into the blood and excreted by the kidneys as a metabolic waste product.
The present structure analysis of creatininium perchlorate, (I), was undertaken as part of a more general investigation into the nature of hydrogen bonding between organic bases or amino acids and inorganic acids in their crystalline forms (Cherouana et al., 2003).
In the present study, only the imino group of the imidazolyl moiety (atom N1) in creatinine is protonated, which confirms the possibility of the existence of creatininium cations in various tautomeric forms in aqueous solution. This is discussed and quantified in the light of the interpretation of the solution acidity effect on 1H, 13 C and 14 N NMR chemical shifts (Kotsyubynskyy et al., 2004).
The asymmetric unit of (I) contains a monoprotonated creatininium cation and two perchlorate anions (Fig.1).
The bond distances in the imidazolyl ring of (I) are, in general, not significantly different from those found in similar hybrid compounds containing protonated imidazolyl moieties like creatininium nitrate (Berrah et al., 2005). The creatininium ring is planar, as expected, with a mean deviation from planarity of 0.0017 Å.
The average Cl—O bond distances and O—Cl—O bond angles are 1.40625 (4) Å and 109.50 (3)°, respectively, confirming a tetrahedral configuration, similar to other perchlorates studied at low temperature. Perchlorate anions (ClO4-), surrounded by two creatininium residues via hydrogen bonds play an important role in stabilizing the crystal structure.
The cation-anion N—H—O interactions form sheet parallel to the (0 1 0) plane (Table 1, Fig.2). Weak C-H···O interactions further link the sheets to form a three dimensionnal network (Table 1).