metal-organic compounds
Poly[μ-aqua-di-μ-benzoato-lead(II)]
aDepartment of Physical Chemistry, Henan Polytechnic University, Jiaozuo 454003, People's Republic of China
*Correspondence e-mail: yangjuan0302@yahoo.cn
The reaction of lead(II) nitrate and benzoic acid in aqueous solution yields the title polymer, [Pb(C7H5O2)2(H2O)]n. The contains one PbII ion, two benzoate ligands and one water molecule. The Pb—O bond distances are in the range 2.494 (4)–2.735 (4) Å. The Pb⋯Pb distance is 4.0683 (4) Å, indicating an insignificant metal–metal interaction. The PbII atom has a distorted pentagonal-bipyramidal geometry chelated by two carboxylate O atoms. The Pb atoms are bridged through a coordinating water molecule and two carboxylate O atoms from another two benzoate ligands, giving an infinite three-dimensional supramolecular structure. O—H⋯O hydrogen-bonding interactions involved the coordinating water and carboxylate O atoms enhance the stability of the supramolecular arrangement.
Related literature
For general background to lead(II) compounds, see: Shi et al. (2007); Fan & Zhu (2006); Wang et al. (2006); Kim et al. (2001). For related structures, see: Shi et al. (2007).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; 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/S1600536809028542/fj2238sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809028542/fj2238Isup2.hkl
A mixture of Pb(NO3)2 3H2O (0.172 g, 0.52 mmol), BA (0.102 g, 0.84 mmol), melamine (0.026 g, 0.20 mmol) and distilled water (10 ml) was sealed in a 25 ml Teflon-lined stainless autoclave (Shi et al. 2007). The mixture was heated at 403 K for 6 days to give the colorless stick crystals suitable for X-ray diffraction analysis.
All H atoms bounded to C atoms were positioned geometrically and allowed to ride on their parent atoms, with C—H distances of 0.93 Å. The positions of the water H atoms were found from a difference Fourier map and refined with distance restraints O—H = 0.85 Å, Uiso(H) = 1.5Ueq(O).
Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); 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).[Pb(C7H5O2)2(H2O)] | F(000) = 872 |
Mr = 467.43 | Dx = 2.335 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 4827 reflections |
a = 15.4118 (12) Å | θ = 2.6–28.5° |
b = 7.5122 (6) Å | µ = 12.71 mm−1 |
c = 11.4856 (9) Å | T = 295 K |
β = 91.293 (1)° | Block, colorless |
V = 1329.42 (18) Å3 | 0.4 × 0.1 × 0.08 mm |
Z = 4 |
Bruker APEXII CCD area-detector diffractometer | 2664 independent reflections |
Radiation source: fine-focus sealed tube | 2315 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.057 |
ϕ and ω scans | θmax = 26.2°, θmin = 3.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2007) | h = −19→18 |
Tmin = 0.1, Tmax = 0.247 | k = −9→9 |
13406 measured reflections | l = −14→14 |
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) = 0.087 | w = 1/[σ2(Fo2) + (0.047P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.09 | (Δ/σ)max < 0.001 |
2664 reflections | Δρmax = 3.35 e Å−3 |
181 parameters | Δρmin = −1.31 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008) |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.082 |
[Pb(C7H5O2)2(H2O)] | V = 1329.42 (18) Å3 |
Mr = 467.43 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 15.4118 (12) Å | µ = 12.71 mm−1 |
b = 7.5122 (6) Å | T = 295 K |
c = 11.4856 (9) Å | 0.4 × 0.1 × 0.08 mm |
β = 91.293 (1)° |
Bruker APEXII CCD area-detector diffractometer | 2664 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2007) | 2315 reflections with I > 2σ(I) |
Tmin = 0.1, Tmax = 0.247 | Rint = 0.057 |
13406 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.087 | H-atom parameters constrained |
S = 1.09 | Δρmax = 3.35 e Å−3 |
2664 reflections | Δρmin = −1.31 e Å−3 |
181 parameters |
x | y | z | Uiso*/Ueq | ||
Pb1 | 0.478855 (16) | 0.52214 (3) | 0.311202 (19) | 0.02834 (12) | |
O1 | 0.6082 (3) | 0.3213 (6) | 0.3120 (4) | 0.0390 (11) | |
O2 | 0.5947 (4) | 0.4879 (5) | 0.4674 (4) | 0.0401 (12) | |
O3 | 0.5875 (3) | 0.6929 (5) | 0.1986 (4) | 0.0372 (11) | |
O4 | 0.6356 (4) | 0.5476 (7) | 0.0428 (4) | 0.0453 (13) | |
O5 | 0.4960 (3) | 0.3455 (6) | 0.1048 (3) | 0.0349 (10) | |
H5A | 0.4562 | 0.3648 | 0.0539 | 0.052* | |
H5B | 0.5374 | 0.3865 | 0.0651 | 0.052* | |
C1 | 0.6397 (4) | 0.3861 (8) | 0.4045 (5) | 0.0310 (14) | |
C2 | 0.7318 (4) | 0.3531 (8) | 0.4365 (5) | 0.0286 (13) | |
C3 | 0.7840 (5) | 0.2548 (9) | 0.3639 (5) | 0.0370 (15) | |
H3A | 0.7596 | 0.1994 | 0.2986 | 0.044* | |
C4 | 0.8716 (5) | 0.2383 (10) | 0.3876 (6) | 0.0469 (18) | |
H4A | 0.9062 | 0.1732 | 0.3378 | 0.056* | |
C5 | 0.9082 (5) | 0.3177 (10) | 0.4847 (6) | 0.0495 (19) | |
H5C | 0.9675 | 0.3082 | 0.4996 | 0.059* | |
C6 | 0.8567 (5) | 0.4114 (10) | 0.5599 (6) | 0.0470 (18) | |
H6A | 0.8810 | 0.4624 | 0.6268 | 0.056* | |
C7 | 0.7695 (5) | 0.4291 (9) | 0.5356 (6) | 0.0405 (16) | |
H7A | 0.7351 | 0.4930 | 0.5863 | 0.049* | |
C8 | 0.6480 (4) | 0.6270 (8) | 0.1387 (5) | 0.0309 (14) | |
C9 | 0.7395 (4) | 0.6483 (7) | 0.1816 (5) | 0.0270 (13) | |
C10 | 0.8062 (4) | 0.5691 (9) | 0.1224 (5) | 0.0346 (14) | |
H10A | 0.7938 | 0.5033 | 0.0554 | 0.042* | |
C11 | 0.8914 (5) | 0.5869 (11) | 0.1619 (6) | 0.0462 (17) | |
H11A | 0.9361 | 0.5359 | 0.1203 | 0.055* | |
C12 | 0.9098 (5) | 0.6794 (11) | 0.2623 (6) | 0.0503 (19) | |
H12A | 0.9668 | 0.6896 | 0.2898 | 0.060* | |
C13 | 0.8433 (5) | 0.7573 (10) | 0.3222 (6) | 0.050 (2) | |
H13A | 0.8560 | 0.8209 | 0.3899 | 0.060* | |
C14 | 0.7587 (5) | 0.7427 (9) | 0.2838 (6) | 0.0408 (17) | |
H14A | 0.7144 | 0.7952 | 0.3254 | 0.049* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Pb1 | 0.02962 (19) | 0.02363 (16) | 0.03171 (17) | 0.00173 (9) | −0.00073 (11) | 0.00129 (8) |
O1 | 0.030 (3) | 0.042 (3) | 0.044 (3) | 0.001 (2) | −0.010 (2) | −0.004 (2) |
O2 | 0.039 (3) | 0.041 (3) | 0.041 (3) | 0.015 (2) | 0.005 (2) | 0.0009 (19) |
O3 | 0.036 (3) | 0.027 (2) | 0.049 (3) | 0.0032 (19) | 0.011 (2) | 0.0011 (19) |
O4 | 0.037 (3) | 0.056 (3) | 0.043 (3) | −0.001 (2) | −0.004 (2) | −0.006 (2) |
O5 | 0.043 (3) | 0.033 (2) | 0.028 (2) | −0.005 (2) | −0.0034 (19) | 0.0054 (17) |
C1 | 0.035 (4) | 0.030 (3) | 0.028 (3) | −0.003 (3) | −0.001 (3) | 0.009 (2) |
C2 | 0.027 (4) | 0.026 (3) | 0.032 (3) | 0.004 (2) | −0.002 (3) | 0.003 (2) |
C3 | 0.039 (4) | 0.041 (4) | 0.031 (3) | 0.001 (3) | −0.005 (3) | −0.003 (3) |
C4 | 0.037 (5) | 0.053 (5) | 0.051 (4) | 0.005 (3) | 0.008 (3) | 0.003 (3) |
C5 | 0.034 (4) | 0.057 (5) | 0.057 (5) | −0.003 (4) | −0.006 (4) | 0.012 (4) |
C6 | 0.052 (5) | 0.045 (4) | 0.044 (4) | −0.006 (4) | −0.011 (4) | −0.002 (3) |
C7 | 0.048 (5) | 0.038 (4) | 0.035 (4) | 0.005 (3) | −0.010 (3) | −0.008 (3) |
C8 | 0.037 (4) | 0.021 (3) | 0.035 (3) | 0.002 (3) | 0.001 (3) | 0.006 (2) |
C9 | 0.031 (4) | 0.022 (3) | 0.028 (3) | −0.006 (2) | 0.000 (2) | 0.006 (2) |
C10 | 0.029 (4) | 0.041 (4) | 0.034 (3) | −0.003 (3) | 0.002 (3) | −0.003 (3) |
C11 | 0.033 (4) | 0.055 (5) | 0.051 (4) | 0.003 (4) | 0.006 (3) | −0.004 (4) |
C12 | 0.039 (5) | 0.060 (5) | 0.052 (4) | −0.004 (4) | −0.012 (4) | 0.002 (4) |
C13 | 0.057 (6) | 0.053 (5) | 0.039 (4) | −0.008 (4) | −0.012 (4) | −0.007 (3) |
C14 | 0.048 (5) | 0.033 (4) | 0.041 (4) | −0.004 (3) | 0.008 (3) | −0.005 (3) |
Pb1—O3 | 2.494 (4) | C4—C5 | 1.374 (10) |
Pb1—O1 | 2.499 (4) | C4—H4A | 0.9300 |
Pb1—O2 | 2.515 (5) | C5—C6 | 1.379 (10) |
Pb1—O5i | 2.639 (4) | C5—H5C | 0.9300 |
Pb1—O3ii | 2.677 (4) | C6—C7 | 1.374 (10) |
Pb1—O5 | 2.735 (4) | C6—H6A | 0.9300 |
Pb1—C1 | 2.867 (6) | C7—H7A | 0.9300 |
O1—C1 | 1.256 (7) | C8—C9 | 1.493 (8) |
O2—C1 | 1.269 (8) | C9—C10 | 1.379 (9) |
O3—C8 | 1.271 (7) | C9—C14 | 1.397 (8) |
O3—Pb1i | 2.677 (4) | C10—C11 | 1.386 (10) |
O4—C8 | 1.264 (7) | C10—H10A | 0.9300 |
O5—Pb1ii | 2.639 (4) | C11—C12 | 1.370 (10) |
O5—H5A | 0.8500 | C11—H11A | 0.9300 |
O5—H5B | 0.8500 | C12—C13 | 1.378 (10) |
C1—C2 | 1.479 (8) | C12—H12A | 0.9300 |
C2—C3 | 1.385 (8) | C13—C14 | 1.371 (10) |
C2—C7 | 1.389 (8) | C13—H13A | 0.9300 |
C3—C4 | 1.377 (10) | C14—H14A | 0.9300 |
C3—H3A | 0.9300 | ||
O3—Pb1—O1 | 76.58 (15) | C3—C2—C1 | 120.5 (5) |
O3—Pb1—O2 | 87.06 (16) | C7—C2—C1 | 121.1 (6) |
O1—Pb1—O2 | 51.87 (14) | C4—C3—C2 | 120.6 (6) |
O3—Pb1—O5i | 67.76 (13) | C4—C3—H3A | 119.7 |
O1—Pb1—O5i | 116.34 (14) | C2—C3—H3A | 119.7 |
O2—Pb1—O5i | 74.78 (13) | C5—C4—C3 | 120.2 (7) |
O3—Pb1—O3ii | 135.53 (10) | C5—C4—H4A | 119.9 |
O1—Pb1—O3ii | 75.30 (14) | C3—C4—H4A | 119.9 |
O2—Pb1—O3ii | 101.51 (14) | C4—C5—C6 | 119.9 (7) |
O5i—Pb1—O3ii | 156.67 (12) | C4—C5—H5C | 120.0 |
O3—Pb1—O5 | 73.78 (13) | C6—C5—H5C | 120.0 |
O1—Pb1—O5 | 67.52 (13) | C7—C6—C5 | 119.7 (7) |
O2—Pb1—O5 | 119.18 (14) | C7—C6—H6A | 120.1 |
O5i—Pb1—O5 | 138.36 (11) | C5—C6—H6A | 120.1 |
O3ii—Pb1—O5 | 63.89 (12) | C6—C7—C2 | 121.1 (7) |
O3—Pb1—C1 | 78.02 (15) | C6—C7—H7A | 119.5 |
O1—Pb1—C1 | 25.93 (15) | C2—C7—H7A | 119.5 |
O2—Pb1—C1 | 26.25 (15) | O4—C8—O3 | 123.8 (6) |
O5i—Pb1—C1 | 94.18 (15) | O4—C8—C9 | 117.5 (6) |
O3ii—Pb1—C1 | 90.71 (16) | O3—C8—C9 | 118.7 (5) |
O5—Pb1—C1 | 92.94 (15) | C10—C9—C14 | 119.2 (6) |
C1—O1—Pb1 | 93.6 (4) | C10—C9—C8 | 120.0 (5) |
C1—O2—Pb1 | 92.5 (4) | C14—C9—C8 | 120.8 (6) |
C8—O3—Pb1 | 126.1 (4) | C9—C10—C11 | 120.5 (6) |
C8—O3—Pb1i | 128.4 (4) | C9—C10—H10A | 119.8 |
Pb1—O3—Pb1i | 103.70 (15) | C11—C10—H10A | 119.8 |
Pb1ii—O5—Pb1 | 98.38 (12) | C12—C11—C10 | 120.1 (7) |
Pb1ii—O5—H5A | 120.4 | C12—C11—H11A | 119.9 |
Pb1—O5—H5A | 115.5 | C10—C11—H11A | 119.9 |
Pb1ii—O5—H5B | 115.0 | C11—C12—C13 | 119.5 (7) |
Pb1—O5—H5B | 112.2 | C11—C12—H12A | 120.3 |
H5A—O5—H5B | 96.3 | C13—C12—H12A | 120.3 |
O1—C1—O2 | 120.6 (6) | C14—C13—C12 | 121.2 (7) |
O1—C1—C2 | 119.7 (6) | C14—C13—H13A | 119.4 |
O2—C1—C2 | 119.5 (6) | C12—C13—H13A | 119.4 |
O1—C1—Pb1 | 60.5 (3) | C13—C14—C9 | 119.5 (7) |
O2—C1—Pb1 | 61.2 (4) | C13—C14—H14A | 120.3 |
C2—C1—Pb1 | 165.8 (4) | C9—C14—H14A | 120.3 |
C3—C2—C7 | 118.3 (6) |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x+1, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···O4iii | 0.85 | 1.90 | 2.734 (7) | 168 |
O5—H5B···O4 | 0.85 | 1.96 | 2.740 (7) | 152 |
Symmetry code: (iii) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | [Pb(C7H5O2)2(H2O)] |
Mr | 467.43 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 295 |
a, b, c (Å) | 15.4118 (12), 7.5122 (6), 11.4856 (9) |
β (°) | 91.293 (1) |
V (Å3) | 1329.42 (18) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 12.71 |
Crystal size (mm) | 0.4 × 0.1 × 0.08 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2007) |
Tmin, Tmax | 0.1, 0.247 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13406, 2664, 2315 |
Rint | 0.057 |
(sin θ/λ)max (Å−1) | 0.621 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.087, 1.09 |
No. of reflections | 2664 |
No. of parameters | 181 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 3.35, −1.31 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Pb1—O3 | 2.494 (4) | Pb1—O3ii | 2.677 (4) |
Pb1—O1 | 2.499 (4) | Pb1—O5 | 2.735 (4) |
Pb1—O2 | 2.515 (5) | O3—Pb1i | 2.677 (4) |
Pb1—O5i | 2.639 (4) | O5—Pb1ii | 2.639 (4) |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x+1, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H5A···O4iii | 0.85 | 1.90 | 2.734 (7) | 168 |
O5—H5B···O4 | 0.85 | 1.96 | 2.740 (7) | 152 |
Symmetry code: (iii) −x+1, −y+1, −z. |
Acknowledgements
The authors acknowledge the Doctoral Foundation of Henan Polytechnic University (B2008–58 648265).
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.
Lead(II) compounds have been increasingly studied (Shi et al. 2007; Fan et al. 2006) owing to their possible applications in different fields, especially in environmental protection due to the toxicity of lead and in biological systems for its diverse interactions with biological molecules. As an important family of multidentate O-donor ligands, aromatic carboxylate ligands have been extensively employed in the preparation of metal-organic complexes because of their potential properties and intriguing structural topologies (Wang et al. 2006; Kim et al. 2001). Herein, we report the structure of the title complex.
The asymmetric unit of the title complex, [Pb(C7H5O2)2(H2O)]n, contains a PbII cation, two BA ligands and one water molecule, as illustrated in Fig. 1. The PbII atom is heptacoordinated and chelated by two carboxylate O atoms. The Pb atoms are bridged through a coordinating water and two carboxylate O atoms from another two BA ligands. The Pb—O bond lengths are in the range of 2.494 (4) to 2.735 (4) Å. The inter-distance of Pb···Pb is 4.0683 (4) Å, indicating the weak metal-metal interaction. The PbII atom has a distorted pentagonal bipyramidal geometry and the complexes extend infinitely to three-dimensional supramolecular structure. The coordinating water molecule and carboxylate O atoms are involved in extensive O—H···O hydrogen-bonding interactions (Table 2).