metal-organic compounds
2-Amino-5-nitropyridinium tetraoxidorhenate(VII) monohydrate
aCEMDRX, Department of Physics, University of Coimbra, P-3004-516 Coimbra, Portugal, and bDepartamento de Física, Universidade do Minho, P-4710-057 Braga, Portugal
*Correspondence e-mail: vhugo@fis.uc.pt
All the residues of the title compound, (C5H6N3O2)[ReO4]·H2O, are located on general crystallographic positions. The 2-amino-5-nitropyridinium cation has a typical planar conformation with one of the nitro O atoms −0.058 (5) Å out of plane; the amine H atoms are also a little out of the main ring plane towards the opposite side of the aforementioned O atom [by 0.02 (4) and 0.04 (4) Å]. The perrhenate anion is nearly ideally tetrahedral. Three distinct N—H⋯O hydrogen bonds give rise to C(8) zigzag chains running along [100]. R44(12) rings involving the two hydrogen bonds in which the water molecules interact with the perrhenate anions are also present.
Related literature
For the structural analyses of related 2-amino-5-nitropyridium salts and their potential application as non-linear optical materials, see: Masse & Zyss (1991); Puig-Molina et al. (1998); Aakeröy et al. (1998); Pecaut et al. (1993).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536809029365/ez2177sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809029365/ez2177Isup2.hkl
Crystals of the title compound were obtained by slow evaporation from a water solution of analytical grade reagents on a 1:1 molar ratio. The reagents used were 2-amino-5-nitropyridine (99.5%) and a perrhenic acid solution (65–75% water 99.5%), both purchased from Aldrich.
The structure was solved by
using SHELXS97. All H atoms were first located on a difference Fourier map as a check for data quality; those bonded to C and N aromatic atoms were then placed at idealized positions and refined as riding [C—H=0.93 Å, N—H=0.86 Å, Uiso(H)=1.2Ueq(C) and Uiso(H)=1.2Ueq(N)]. The coordinates of the amine H atoms were then refined only with the restraint that the N—H distance would be 0.89 Å within 0.2 Å. The positions of the H atoms belonging to the water molecule were also restrained so that the intramolecular O—H distance would be 0.89 Å and the H—H distance 1.40 Å, both within 0.02 Å, thus enforcing an acceptable geometry of the water molecule [Uiso(H)=1.5Ueq(O)].Examination of the
with PLATON (Spek, 2009) showed that there are no solvent-accessible voids in the crystal lattice.Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. ORTEPII (Johnson, 1976) plot of the title compound. Displacement ellipsoids are drawn at the 50% level. | |
Fig. 2. Zigzag chain running along the a axis. Small ring motifs made of a perrhenate anion and two water molecules are included in the chain. Hydrogen bonds are indicated with dashed lines. |
(C5H6N3O2)[ReO4]·H2O | F(000) = 760 |
Mr = 408.34 | Dx = 2.631 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 9920 reflections |
a = 9.6914 (3) Å | θ = 2.4–32.3° |
b = 9.1357 (3) Å | µ = 11.81 mm−1 |
c = 13.4636 (4) Å | T = 295 K |
β = 120.120 (2)° | Prism, translucent colourless |
V = 1031.08 (6) Å3 | 0.10 × 0.06 × 0.05 mm |
Z = 4 |
Bruker APEXII diffractometer | 2374 independent reflections |
Radiation source: fine-focus sealed tube | 2175 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
ϕ and ω scans | θmax = 27.5°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→12 |
Tmin = 0.33, Tmax = 0.55 | k = −11→11 |
30757 measured reflections | l = −17→17 |
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)] = 0.015 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.033 | w = 1/[σ2(Fo2) + (0.0122P)2 + 1.4451P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max = 0.001 |
2374 reflections | Δρmax = 0.88 e Å−3 |
158 parameters | Δρmin = −0.72 e Å−3 |
5 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.00774 (16) |
(C5H6N3O2)[ReO4]·H2O | V = 1031.08 (6) Å3 |
Mr = 408.34 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 9.6914 (3) Å | µ = 11.81 mm−1 |
b = 9.1357 (3) Å | T = 295 K |
c = 13.4636 (4) Å | 0.10 × 0.06 × 0.05 mm |
β = 120.120 (2)° |
Bruker APEXII diffractometer | 2374 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2175 reflections with I > 2σ(I) |
Tmin = 0.33, Tmax = 0.55 | Rint = 0.030 |
30757 measured reflections |
R[F2 > 2σ(F2)] = 0.015 | 5 restraints |
wR(F2) = 0.033 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.88 e Å−3 |
2374 reflections | Δρmin = −0.72 e Å−3 |
158 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 | ||
N1 | 0.2958 (3) | 0.4684 (3) | 0.0719 (2) | 0.0338 (5) | |
H1 | 0.2145 | 0.4119 | 0.0493 | 0.041* | |
C2 | 0.4404 (3) | 0.4063 (3) | 0.1067 (2) | 0.0315 (6) | |
N2 | 0.4512 (3) | 0.2632 (3) | 0.1047 (3) | 0.0434 (6) | |
H2A | 0.367 (3) | 0.204 (3) | 0.080 (3) | 0.052* | |
H2B | 0.543 (2) | 0.219 (4) | 0.124 (3) | 0.052* | |
C3 | 0.5736 (3) | 0.4998 (3) | 0.1440 (3) | 0.0352 (6) | |
H3 | 0.6741 | 0.4605 | 0.1684 | 0.042* | |
C4 | 0.5549 (3) | 0.6463 (3) | 0.1442 (2) | 0.0362 (6) | |
H4 | 0.6420 | 0.7086 | 0.1688 | 0.043* | |
C5 | 0.4020 (3) | 0.7029 (3) | 0.1067 (2) | 0.0332 (6) | |
N3 | 0.3785 (4) | 0.8592 (3) | 0.1068 (2) | 0.0437 (6) | |
O1 | 0.4946 (4) | 0.9377 (3) | 0.1387 (3) | 0.0717 (9) | |
O2 | 0.2459 (3) | 0.9055 (3) | 0.0781 (3) | 0.0632 (7) | |
C6 | 0.2737 (3) | 0.6133 (3) | 0.0712 (2) | 0.0336 (6) | |
H6 | 0.1728 | 0.6517 | 0.0469 | 0.040* | |
O3 | 0.1012 (3) | 0.2314 (2) | 0.0301 (2) | 0.0538 (6) | |
H3A | 0.083 (5) | 0.174 (3) | 0.076 (2) | 0.081* | |
H3B | 0.079 (5) | 0.174 (3) | −0.030 (2) | 0.081* | |
Re | 0.905465 (12) | 0.037384 (13) | 0.215124 (10) | 0.03195 (6) | |
O4 | 0.8222 (3) | −0.1153 (3) | 0.1338 (2) | 0.0680 (7) | |
O5 | 0.7677 (3) | 0.1758 (3) | 0.1707 (3) | 0.0632 (7) | |
O6 | 0.9713 (4) | −0.0024 (3) | 0.3551 (2) | 0.0674 (8) | |
O7 | 1.0618 (3) | 0.0893 (3) | 0.1987 (3) | 0.0664 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0264 (11) | 0.0290 (12) | 0.0452 (15) | −0.0007 (9) | 0.0174 (11) | 0.0031 (11) |
C2 | 0.0289 (12) | 0.0319 (14) | 0.0329 (15) | 0.0032 (11) | 0.0150 (11) | 0.0054 (12) |
N2 | 0.0375 (13) | 0.0281 (13) | 0.0627 (18) | 0.0052 (11) | 0.0237 (14) | 0.0057 (13) |
C3 | 0.0262 (13) | 0.0400 (16) | 0.0369 (16) | 0.0004 (11) | 0.0142 (12) | 0.0010 (13) |
C4 | 0.0312 (13) | 0.0411 (17) | 0.0341 (16) | −0.0090 (12) | 0.0147 (12) | −0.0035 (13) |
C5 | 0.0417 (15) | 0.0277 (14) | 0.0296 (15) | 0.0020 (12) | 0.0175 (12) | 0.0023 (12) |
N3 | 0.0597 (17) | 0.0299 (13) | 0.0415 (15) | 0.0009 (12) | 0.0254 (13) | 0.0003 (11) |
O1 | 0.080 (2) | 0.0345 (13) | 0.108 (3) | −0.0181 (13) | 0.0530 (19) | −0.0083 (14) |
O2 | 0.0674 (17) | 0.0398 (14) | 0.0761 (19) | 0.0152 (13) | 0.0313 (15) | 0.0003 (13) |
C6 | 0.0320 (13) | 0.0329 (15) | 0.0351 (15) | 0.0054 (12) | 0.0161 (12) | 0.0046 (13) |
O3 | 0.0643 (16) | 0.0382 (13) | 0.0750 (19) | −0.0090 (12) | 0.0471 (15) | −0.0043 (13) |
Re | 0.02646 (7) | 0.03566 (8) | 0.03418 (8) | 0.00296 (4) | 0.01554 (5) | 0.00215 (5) |
O4 | 0.0773 (19) | 0.0537 (16) | 0.0667 (18) | −0.0151 (14) | 0.0315 (15) | −0.0156 (14) |
O5 | 0.0447 (13) | 0.0583 (16) | 0.0843 (19) | 0.0226 (12) | 0.0307 (13) | 0.0131 (15) |
O6 | 0.085 (2) | 0.0780 (19) | 0.0394 (15) | 0.0150 (16) | 0.0313 (14) | 0.0090 (13) |
O7 | 0.0398 (13) | 0.083 (2) | 0.086 (2) | 0.0057 (13) | 0.0389 (14) | 0.0225 (17) |
N1—C6 | 1.341 (4) | C5—C6 | 1.360 (4) |
N1—C2 | 1.358 (3) | C5—N3 | 1.446 (4) |
N1—H1 | 0.8600 | N3—O1 | 1.216 (4) |
C2—N2 | 1.313 (4) | N3—O2 | 1.217 (4) |
C2—C3 | 1.413 (4) | C6—H6 | 0.9300 |
N2—H2A | 0.89 (3) | O3—H3A | 0.89 (3) |
N2—H2B | 0.89 (3) | O3—H3B | 0.89 (3) |
C3—C4 | 1.351 (4) | Re—O6 | 1.698 (3) |
C3—H3 | 0.9300 | Re—O7 | 1.704 (2) |
C4—C5 | 1.402 (4) | Re—O4 | 1.705 (3) |
C4—H4 | 0.9300 | Re—O5 | 1.714 (2) |
C6—N1—C2 | 123.2 (2) | C6—C5—N3 | 118.6 (3) |
C6—N1—H1 | 118.4 | C4—C5—N3 | 120.1 (3) |
C2—N1—H1 | 118.4 | O1—N3—O2 | 123.3 (3) |
N2—C2—N1 | 119.2 (3) | O1—N3—C5 | 117.7 (3) |
N2—C2—C3 | 122.8 (3) | O2—N3—C5 | 119.0 (3) |
N1—C2—C3 | 118.0 (3) | N1—C6—C5 | 118.5 (2) |
C2—N2—H2A | 123 (2) | N1—C6—H6 | 120.7 |
C2—N2—H2B | 122 (2) | C5—C6—H6 | 120.7 |
H2A—N2—H2B | 115 (3) | H3A—O3—H3B | 104 (3) |
C4—C3—C2 | 120.0 (3) | O6—Re—O7 | 109.89 (15) |
C4—C3—H3 | 120.0 | O6—Re—O4 | 109.31 (15) |
C2—C3—H3 | 120.0 | O7—Re—O4 | 108.01 (15) |
C3—C4—C5 | 118.9 (3) | O6—Re—O5 | 109.77 (14) |
C3—C4—H4 | 120.6 | O7—Re—O5 | 109.69 (13) |
C5—C4—H4 | 120.6 | O4—Re—O5 | 110.15 (14) |
C6—C5—C4 | 121.3 (3) | ||
C6—N1—C2—N2 | 179.9 (3) | C4—C5—N3—O1 | 1.0 (4) |
C6—N1—C2—C3 | 0.1 (4) | C6—C5—N3—O2 | 1.9 (4) |
N2—C2—C3—C4 | −179.9 (3) | C4—C5—N3—O2 | −177.2 (3) |
N1—C2—C3—C4 | −0.1 (4) | C2—N1—C6—C5 | 0.1 (4) |
C2—C3—C4—C5 | −0.2 (4) | C4—C5—C6—N1 | −0.4 (4) |
C3—C4—C5—C6 | 0.4 (4) | N3—C5—C6—N1 | −179.5 (3) |
C3—C4—C5—N3 | 179.5 (3) | N1—C2—N2—H2A | 1 (3) |
C6—C5—N3—O1 | −179.9 (3) | C3—C2—N2—H2B | −3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O3 | 0.86 | 1.93 | 2.738 (3) | 157 |
N1—H1···O6i | 0.86 | 2.63 | 3.049 (4) | 112 |
N2—H2A···O3 | 0.89 (3) | 2.33 (3) | 3.030 (4) | 135 (3) |
N2—H2A···O4ii | 0.89 (3) | 2.65 (3) | 3.259 (4) | 127 (3) |
N2—H2B···O5 | 0.89 (3) | 1.98 (3) | 2.846 (3) | 164 (3) |
O3—H3A···O7iii | 0.89 (3) | 1.93 (3) | 2.802 (4) | 167 (3) |
O3—H3B···O4ii | 0.89 (3) | 2.13 (3) | 2.862 (4) | 139 (3) |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) −x+1, −y, −z; (iii) x−1, y, z. |
Experimental details
Crystal data | |
Chemical formula | (C5H6N3O2)[ReO4]·H2O |
Mr | 408.34 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 295 |
a, b, c (Å) | 9.6914 (3), 9.1357 (3), 13.4636 (4) |
β (°) | 120.120 (2) |
V (Å3) | 1031.08 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 11.81 |
Crystal size (mm) | 0.10 × 0.06 × 0.05 |
Data collection | |
Diffractometer | Bruker APEXII diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.33, 0.55 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 30757, 2374, 2175 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.015, 0.033, 1.05 |
No. of reflections | 2374 |
No. of parameters | 158 |
No. of restraints | 5 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.88, −0.72 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), ORTEPII (Johnson, 1976), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O3 | 0.86 | 1.93 | 2.738 (3) | 157.1 |
N1—H1···O6i | 0.86 | 2.63 | 3.049 (4) | 111.7 |
N2—H2A···O3 | 0.89 (3) | 2.33 (3) | 3.030 (4) | 135 (3) |
N2—H2A···O4ii | 0.89 (3) | 2.65 (3) | 3.259 (4) | 127 (3) |
N2—H2B···O5 | 0.89 (3) | 1.98 (3) | 2.846 (3) | 164 (3) |
O3—H3A···O7iii | 0.89 (3) | 1.93 (3) | 2.802 (4) | 167 (3) |
O3—H3B···O4ii | 0.89 (3) | 2.13 (3) | 2.862 (4) | 139 (3) |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) −x+1, −y, −z; (iii) x−1, y, z. |
Acknowledgements
This work was supported by Fundação para a Ciência e a Tecnologia (FCT).
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