metal-organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

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ISSN: 2056-9890

(2,2′-Bi­pyridine-κ2N,N′)bis­­(4-methyl­benzoato-κ2O,O′)lead(II)

aInstitute of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, 454003, People's Republic of China, and bDepartment of Physical Chemistry, Henan Polytechnic University, Jiaozuo, 454003, People's Republic of China
*Correspondence e-mail: yangjuan0302@yahoo.cn

(Received 17 January 2010; accepted 10 February 2010; online 13 February 2010)

In the title compound, [Pb(C8H7O2)2(C10H8N2)], the PbII ion is coordinated by two N atoms from one 2,2′-bipyridine ligand and four O atoms from two 4-methyl­benzoate anions in a distorted pseudo-square-pyramidal environment, considering one of the carboxyl­ate anions as an apical ligand. Pairs of complex mol­ecules related by inversion centers are organized into dimers via pairs of Pb⋯O inter­actions [3.185 (2) Å] and stacking interactions between 2,2′-bipyridine and 4-methyl­benzoate ligands, with a mean distance between their planes of 3.491 Å.

Related literature

For potential applications of lead compounds, see: Fan & Zhu (2006[Fan, S. R. & Zhu, L. G. (2006). Inorg. Chem. 45, 7935-7942.]); Hamilton et al. (2004[Hamilton, B. H., Kelley, K. A., Wagler, T. A., Espe, M. P. & Ziegler, C. J. (2004). Inorg. Chem. 43, 50-56.]). For the use of aromatic carboxyl­ates and 2,2′-bipyridine-type ligands in the preparation of metal complexes, see: Wang et al. (2006[Wang, X. L., Qin, C. & Wang, E. B. (2006). Cryst. Growth Des. 6, 439-443.]); Masaoka et al. (2001[Masaoka, S., Furukawa, S., Chang, H. C., Mizutani, T. & Kitagawa, S. (2001). Angew. Chem. Int. Ed. 40, 3817-3819.]).

[Scheme 1]

Experimental

Crystal data
  • [Pb(C8H7O2)2(C10H8N2)]

  • Mr = 633.65

  • Triclinic, [P \overline 1]

  • a = 9.5510 (11) Å

  • b = 10.0805 (12) Å

  • c = 13.2483 (15) Å

  • α = 109.865 (1)°

  • β = 97.322 (1)°

  • γ = 90.643 (1)°

  • V = 1187.8 (2) Å3

  • Z = 2

  • Mo Kα radiation

  • μ = 7.14 mm−1

  • T = 296 K

  • 0.35 × 0.26 × 0.18 mm

Data collection
  • Bruker APEXII CCD area detector diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2007[Bruker (2007). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.124, Tmax = 0.277

  • 14285 measured reflections

  • 5555 independent reflections

  • 4965 reflections with I > 2σ(I)

  • Rint = 0.027

Refinement
  • R[F2 > 2σ(F2)] = 0.023

  • wR(F2) = 0.051

  • S = 1.02

  • 5555 reflections

  • 300 parameters

  • 2 restraints

  • H-atom parameters constrained

  • Δρmax = 0.77 e Å−3

  • Δρmin = −0.76 e Å−3

Table 1
Selected bond lengths (Å)

Pb1—O1 2.333 (2)
Pb1—O3 2.418 (2)
Pb1—N2 2.608 (3)
Pb1—O2 2.644 (2)
Pb1—N1 2.656 (3)
Pb1—O4 2.701 (2)

Data collection: APEX2 (Bruker, 2007[Bruker (2007). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2007[Bruker (2007). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); software used to prepare material for publication: SHELXTL.

Supporting information


Comment top

Recently, lead compounds have been increasingly studied owing to their possible applications in different fields (Fan et al., 2006; Hamilton et al., 2004), such as ion-exchange, nonlinear optics and catalysis, 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; Masaoka et al., 2001). Herein, we report the structure of the title complex.

The asymmetric unit of the title complex, [Pb(C8H7O2)2(C10H8N2)], contains a PbII cation, two 4-methylbenzoate ligands, one 2,2'-bipyridine ligand, as illustrated in Fig. 1. The PbII atom is hexacoordinated being chelated by two carboxylate groups and one 2,2'-bipyridine. The Pb—O bond lengths are in the range of 2.333 (2) to 2.701 (2) Å. The Pb—N bond lengths are 2.608 (3) to 2.656 (3) Å. The PbII atom has a distorted pseudo-square-pyramidal environment, considering one of the carboxylate anions as an apical ligand. The complex molecules related by inversion center are organized into dimeric units via a pair of Pb···O interactions of 3.185 (2) Å and stacking inteactions between 2,2'-bipyridine and 4-methylbenzoate ligands, with a mean distance between their planes of 3.491 Å.

Related literature top

For potential applications of lead compounds, see: Fan & Zhu (2006); Hamilton et al. (2004). For the use of aromatic carboxylates and 2,2'-bipyridine-type ligands in the preparation of metal complexes, see: Wang et al. (2006); Masaoka et al. (2001).

Experimental top

A mixture of Pb(CH3COO)2.3H2O (0.199 g, 0.52 mmol), 4-methylbenzoic acid (0.114 g, 0.84 mmol), 2,2'-bipyridine (0.033 g, 0.21 mmol) and distilled water (10 ml) was sealed in a 25 ml Teflon-lined stainless autoclave. The mixture was heated at 403 K for 7 days to give the colorless crystals suitable for X-ray diffraction analysis.

Refinement top

All H atoms bounded to C atoms were placed in calculated positions and treated in a riding-model approximation, with C (aromatic)—H = 0.93 Å, C(methyl)—H = 0.96 Å and Uiso(Haromatic) = 1.2Ueq(C), Uiso(Hmethyl) = 1.5Ueq(C). Two rigid-bond restraints to Uij values (DELU) were imposed on bonded atoms Pb1—O4 and Pb1—O2.

Computing details top

Data collection: APEX2 (Bruker, 2007); cell refinement: 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).

Figures top
[Figure 1] Fig. 1. The coordination environment around PbII in the title complex with the atom-labeling scheme. Displacement ellipsoids for non-hydrogen atoms are drawn at the 30% probability level.
(2,2'-Bipyridine-κ2N,N')bis(4-methylbenzoato-κ2O,O')lead(II) top
Crystal data top
[Pb(C8H7O2)2(C10H8N2)]Z = 2
Mr = 633.65F(000) = 612
Triclinic, P1Dx = 1.772 Mg m3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 9.5510 (11) ÅCell parameters from 7017 reflections
b = 10.0805 (12) Åθ = 2.2–26.6°
c = 13.2483 (15) ŵ = 7.14 mm1
α = 109.865 (1)°T = 296 K
β = 97.322 (1)°Prism, colorless
γ = 90.643 (1)°0.35 × 0.26 × 0.18 mm
V = 1187.8 (2) Å3
Data collection top
Bruker APEXII CCD area detector
diffractometer
5555 independent reflections
Radiation source: fine-focus sealed tube4965 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.027
ϕ and ω scansθmax = 27.8°, θmin = 2.2°
Absorption correction: multi-scan
(SADABS; Bruker, 2007)
h = 1212
Tmin = 0.124, Tmax = 0.277k = 1313
14285 measured reflectionsl = 1717
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.023Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.051H-atom parameters constrained
S = 1.02 w = 1/[σ2(Fo2) + (0.0227P)2 + 0.140P]
where P = (Fo2 + 2Fc2)/3
5555 reflections(Δ/σ)max = 0.001
300 parametersΔρmax = 0.77 e Å3
2 restraintsΔρmin = 0.76 e Å3
Crystal data top
[Pb(C8H7O2)2(C10H8N2)]γ = 90.643 (1)°
Mr = 633.65V = 1187.8 (2) Å3
Triclinic, P1Z = 2
a = 9.5510 (11) ÅMo Kα radiation
b = 10.0805 (12) ŵ = 7.14 mm1
c = 13.2483 (15) ÅT = 296 K
α = 109.865 (1)°0.35 × 0.26 × 0.18 mm
β = 97.322 (1)°
Data collection top
Bruker APEXII CCD area detector
diffractometer
5555 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2007)
4965 reflections with I > 2σ(I)
Tmin = 0.124, Tmax = 0.277Rint = 0.027
14285 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0232 restraints
wR(F2) = 0.051H-atom parameters constrained
S = 1.02Δρmax = 0.77 e Å3
5555 reflectionsΔρmin = 0.76 e Å3
300 parameters
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Pb10.010726 (12)0.117736 (12)0.677133 (9)0.03988 (5)
O10.2108 (2)0.1792 (2)0.80800 (18)0.0483 (5)
O20.0648 (2)0.3523 (2)0.84728 (18)0.0543 (6)
O30.1789 (3)0.0320 (3)0.5511 (2)0.0601 (6)
O40.1595 (3)0.2603 (2)0.58236 (19)0.0556 (6)
N10.0850 (3)0.0481 (3)0.8332 (2)0.0468 (6)
N20.0489 (3)0.1362 (3)0.6814 (2)0.0454 (6)
C10.1748 (3)0.2982 (3)0.8699 (3)0.0413 (7)
C20.2682 (3)0.3698 (3)0.9753 (3)0.0409 (7)
C30.4063 (3)0.3339 (3)0.9934 (3)0.0488 (8)
H3A0.44300.26320.93950.059*
C40.4895 (4)0.4025 (4)1.0911 (3)0.0586 (10)
H4A0.58250.37811.10160.070*
C50.4386 (4)0.5062 (4)1.1735 (3)0.0559 (9)
C60.3003 (4)0.5395 (4)1.1556 (3)0.0576 (9)
H6A0.26300.60761.21080.069*
C70.2156 (4)0.4740 (3)1.0576 (3)0.0470 (7)
H7A0.12330.50001.04700.056*
C80.5337 (5)0.5824 (5)1.2781 (4)0.0861 (15)
H8A0.59320.51641.29770.129*
H8B0.47700.62441.33430.129*
H8C0.59130.65481.26870.129*
C90.2085 (3)0.1461 (4)0.5346 (3)0.0449 (7)
C100.3033 (3)0.1363 (3)0.4516 (2)0.0413 (7)
C110.3697 (4)0.0135 (4)0.4040 (3)0.0522 (8)
H11A0.35690.06400.42540.063*
C120.4548 (4)0.0043 (4)0.3251 (3)0.0571 (9)
H12A0.49850.07920.29470.068*
C130.4757 (4)0.1168 (4)0.2909 (3)0.0532 (8)
C140.4090 (4)0.2395 (4)0.3393 (3)0.0662 (11)
H14A0.42090.31680.31730.079*
C150.3258 (4)0.2498 (4)0.4188 (3)0.0584 (9)
H15A0.28440.33420.45080.070*
C160.5663 (5)0.1044 (5)0.2032 (3)0.0709 (11)
H16A0.64550.04950.21180.106*
H16B0.59980.19700.20840.106*
H16C0.51130.05890.13350.106*
C170.1533 (4)0.1412 (4)0.9053 (3)0.0553 (9)
H17A0.15600.23310.90460.066*
C180.2200 (4)0.1079 (4)0.9806 (3)0.0599 (10)
H18A0.26570.17591.03010.072*
C190.2174 (4)0.0266 (4)0.9810 (3)0.0640 (10)
H19A0.26060.05211.03130.077*
C200.1495 (4)0.1250 (4)0.9053 (3)0.0600 (10)
H20A0.14870.21820.90320.072*
C210.0830 (3)0.0847 (3)0.8330 (3)0.0435 (7)
C220.0052 (3)0.1848 (3)0.7519 (3)0.0441 (7)
C230.0131 (5)0.3217 (4)0.7493 (4)0.0672 (11)
H23A0.02390.35310.79930.081*
C240.0856 (5)0.4114 (4)0.6734 (4)0.0755 (12)
H24A0.09870.50350.67130.091*
C250.1376 (5)0.3618 (4)0.6014 (4)0.0736 (12)
H25A0.18640.42030.54850.088*
C260.1179 (4)0.2249 (4)0.6073 (3)0.0600 (9)
H26A0.15420.19250.55750.072*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Pb10.04568 (8)0.03734 (7)0.03350 (7)0.00681 (5)0.00661 (5)0.00766 (5)
O10.0490 (13)0.0417 (13)0.0455 (12)0.0100 (10)0.0040 (10)0.0047 (10)
O20.0543 (14)0.0485 (12)0.0465 (12)0.0145 (11)0.0036 (11)0.0024 (8)
O30.0754 (17)0.0499 (15)0.0603 (15)0.0102 (12)0.0314 (13)0.0178 (12)
O40.0650 (15)0.0465 (14)0.0517 (14)0.0039 (11)0.0230 (11)0.0069 (11)
N10.0555 (17)0.0416 (15)0.0474 (16)0.0116 (12)0.0152 (13)0.0175 (13)
N20.0493 (16)0.0372 (14)0.0425 (15)0.0101 (12)0.0068 (12)0.0041 (12)
C10.0449 (18)0.0384 (17)0.0400 (16)0.0004 (13)0.0069 (13)0.0122 (14)
C20.0449 (17)0.0317 (16)0.0451 (17)0.0002 (13)0.0026 (13)0.0132 (13)
C30.0450 (18)0.0385 (18)0.062 (2)0.0048 (14)0.0081 (16)0.0162 (16)
C40.047 (2)0.045 (2)0.082 (3)0.0008 (16)0.0102 (18)0.025 (2)
C50.067 (2)0.0364 (18)0.059 (2)0.0093 (16)0.0156 (18)0.0191 (17)
C60.076 (3)0.0364 (18)0.051 (2)0.0046 (17)0.0001 (18)0.0063 (15)
C70.0463 (18)0.0387 (18)0.0507 (19)0.0068 (14)0.0017 (15)0.0102 (15)
C80.100 (4)0.059 (3)0.082 (3)0.013 (2)0.036 (3)0.019 (2)
C90.0417 (17)0.0466 (19)0.0370 (16)0.0020 (14)0.0028 (13)0.0035 (14)
C100.0392 (16)0.0446 (18)0.0352 (15)0.0013 (13)0.0022 (12)0.0084 (13)
C110.056 (2)0.050 (2)0.055 (2)0.0112 (16)0.0145 (16)0.0217 (17)
C120.059 (2)0.056 (2)0.059 (2)0.0196 (17)0.0222 (18)0.0187 (19)
C130.0469 (19)0.066 (2)0.050 (2)0.0074 (17)0.0112 (15)0.0227 (18)
C140.076 (3)0.059 (2)0.075 (3)0.009 (2)0.031 (2)0.031 (2)
C150.066 (2)0.045 (2)0.063 (2)0.0092 (17)0.0198 (19)0.0133 (18)
C160.065 (2)0.090 (3)0.068 (3)0.015 (2)0.028 (2)0.033 (2)
C170.068 (2)0.050 (2)0.053 (2)0.0179 (17)0.0216 (18)0.0189 (17)
C180.066 (2)0.066 (3)0.052 (2)0.0174 (19)0.0237 (18)0.0201 (19)
C190.066 (2)0.070 (3)0.064 (2)0.004 (2)0.023 (2)0.029 (2)
C200.071 (2)0.048 (2)0.068 (2)0.0028 (18)0.018 (2)0.0268 (19)
C210.0435 (18)0.0357 (17)0.0495 (18)0.0037 (13)0.0053 (14)0.0129 (14)
C220.0453 (18)0.0346 (17)0.0486 (18)0.0016 (13)0.0036 (14)0.0105 (14)
C230.080 (3)0.040 (2)0.082 (3)0.0076 (19)0.016 (2)0.019 (2)
C240.089 (3)0.036 (2)0.093 (3)0.015 (2)0.010 (3)0.011 (2)
C250.087 (3)0.050 (2)0.071 (3)0.030 (2)0.018 (2)0.001 (2)
C260.069 (2)0.048 (2)0.057 (2)0.0158 (18)0.0149 (18)0.0071 (17)
Geometric parameters (Å, º) top
Pb1—O12.333 (2)C10—C111.386 (4)
Pb1—O32.418 (2)C11—C121.383 (5)
Pb1—N22.608 (3)C11—H11A0.9300
Pb1—O22.644 (2)C12—C131.378 (5)
Pb1—N12.656 (3)C12—H12A0.9300
Pb1—O42.701 (2)C13—C141.389 (5)
O1—C11.282 (4)C13—C161.509 (5)
O2—C11.239 (4)C14—C151.376 (5)
O3—C91.277 (4)C14—H14A0.9300
O4—C91.240 (4)C15—H15A0.9300
N1—C171.335 (4)C16—H16A0.9600
N1—C211.339 (4)C16—H16B0.9600
N2—C261.333 (4)C16—H16C0.9600
N2—C221.345 (4)C17—C181.378 (5)
C1—C21.500 (4)C17—H17A0.9300
C2—C71.384 (4)C18—C191.358 (5)
C2—C31.385 (4)C18—H18A0.9300
C3—C41.379 (5)C19—C201.384 (5)
C3—H3A0.9300C19—H19A0.9300
C4—C51.375 (5)C20—C211.378 (5)
C4—H4A0.9300C20—H20A0.9300
C5—C61.377 (5)C21—C221.486 (5)
C5—C81.508 (5)C22—C231.382 (5)
C6—C71.383 (5)C23—C241.372 (6)
C6—H6A0.9300C23—H23A0.9300
C7—H7A0.9300C24—C251.359 (6)
C8—H8A0.9600C24—H24A0.9300
C8—H8B0.9600C25—C261.372 (5)
C8—H8C0.9600C25—H25A0.9300
C9—C101.490 (4)C26—H26A0.9300
C10—C151.379 (5)
O1—Pb1—O384.31 (9)C15—C10—C11118.0 (3)
O1—Pb1—N283.74 (8)C15—C10—C9120.4 (3)
O3—Pb1—N277.33 (8)C11—C10—C9121.6 (3)
O1—Pb1—O252.25 (7)C12—C11—C10121.2 (3)
O3—Pb1—O2121.72 (8)C12—C11—H11A119.4
N2—Pb1—O2124.68 (8)C10—C11—H11A119.4
O1—Pb1—N179.77 (8)C13—C12—C11121.0 (3)
O3—Pb1—N1137.27 (8)C13—C12—H12A119.5
N2—Pb1—N161.75 (8)C11—C12—H12A119.5
O2—Pb1—N177.17 (8)C12—C13—C14117.4 (3)
O1—Pb1—O482.72 (8)C12—C13—C16120.5 (3)
O3—Pb1—O450.77 (8)C14—C13—C16122.1 (3)
N2—Pb1—O4127.29 (8)C15—C14—C13121.8 (4)
O2—Pb1—O483.26 (7)C15—C14—H14A119.1
N1—Pb1—O4159.20 (9)C13—C14—H14A119.1
C1—O1—Pb199.27 (19)C14—C15—C10120.6 (3)
C1—O2—Pb185.80 (18)C14—C15—H15A119.7
C9—O3—Pb199.36 (19)C10—C15—H15A119.7
C9—O4—Pb187.0 (2)C13—C16—H16A109.5
C17—N1—C21118.3 (3)C13—C16—H16B109.5
C17—N1—Pb1119.9 (2)H16A—C16—H16B109.5
C21—N1—Pb1121.1 (2)C13—C16—H16C109.5
C26—N2—C22118.0 (3)H16A—C16—H16C109.5
C26—N2—Pb1119.3 (2)H16B—C16—H16C109.5
C22—N2—Pb1122.6 (2)N1—C17—C18123.3 (3)
O2—C1—O1122.5 (3)N1—C17—H17A118.4
O2—C1—C2119.8 (3)C18—C17—H17A118.4
O1—C1—C2117.7 (3)C19—C18—C17118.5 (4)
C7—C2—C3118.6 (3)C19—C18—H18A120.7
C7—C2—C1119.6 (3)C17—C18—H18A120.7
C3—C2—C1121.8 (3)C18—C19—C20118.9 (3)
C4—C3—C2120.3 (3)C18—C19—H19A120.5
C4—C3—H3A119.9C20—C19—H19A120.5
C2—C3—H3A119.9C21—C20—C19119.8 (3)
C5—C4—C3121.7 (3)C21—C20—H20A120.1
C5—C4—H4A119.2C19—C20—H20A120.1
C3—C4—H4A119.2N1—C21—C20121.1 (3)
C4—C5—C6117.7 (3)N1—C21—C22116.7 (3)
C4—C5—C8120.4 (4)C20—C21—C22122.2 (3)
C6—C5—C8121.9 (4)N2—C22—C23120.9 (3)
C5—C6—C7121.6 (3)N2—C22—C21117.2 (3)
C5—C6—H6A119.2C23—C22—C21121.9 (3)
C7—C6—H6A119.2C24—C23—C22120.4 (4)
C6—C7—C2120.1 (3)C24—C23—H23A119.8
C6—C7—H7A120.0C22—C23—H23A119.8
C2—C7—H7A120.0C25—C24—C23118.1 (4)
C5—C8—H8A109.5C25—C24—H24A120.9
C5—C8—H8B109.5C23—C24—H24A120.9
H8A—C8—H8B109.5C24—C25—C26119.6 (4)
C5—C8—H8C109.5C24—C25—H25A120.2
H8A—C8—H8C109.5C26—C25—H25A120.2
H8B—C8—H8C109.5N2—C26—C25122.9 (4)
O4—C9—O3122.8 (3)N2—C26—H26A118.6
O4—C9—C10120.4 (3)C25—C26—H26A118.6
O3—C9—C10116.8 (3)

Experimental details

Crystal data
Chemical formula[Pb(C8H7O2)2(C10H8N2)]
Mr633.65
Crystal system, space groupTriclinic, P1
Temperature (K)296
a, b, c (Å)9.5510 (11), 10.0805 (12), 13.2483 (15)
α, β, γ (°)109.865 (1), 97.322 (1), 90.643 (1)
V3)1187.8 (2)
Z2
Radiation typeMo Kα
µ (mm1)7.14
Crystal size (mm)0.35 × 0.26 × 0.18
Data collection
DiffractometerBruker APEXII CCD area detector
diffractometer
Absorption correctionMulti-scan
(SADABS; Bruker, 2007)
Tmin, Tmax0.124, 0.277
No. of measured, independent and
observed [I > 2σ(I)] reflections
14285, 5555, 4965
Rint0.027
(sin θ/λ)max1)0.655
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.023, 0.051, 1.02
No. of reflections5555
No. of parameters300
No. of restraints2
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.77, 0.76

Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

Selected bond lengths (Å) top
Pb1—O12.333 (2)Pb1—O22.644 (2)
Pb1—O32.418 (2)Pb1—N12.656 (3)
Pb1—N22.608 (3)Pb1—O42.701 (2)
 

Acknowledgements

The authors acknowledge the Doctoral Foundation of Henan Polytechnic University (B2008–58 648265).

References

First citationBruker (2007). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.  Google Scholar
First citationFan, S. R. & Zhu, L. G. (2006). Inorg. Chem. 45, 7935–7942.  Web of Science CSD CrossRef PubMed CAS Google Scholar
First citationHamilton, B. H., Kelley, K. A., Wagler, T. A., Espe, M. P. & Ziegler, C. J. (2004). Inorg. Chem. 43, 50–56.  Web of Science CSD CrossRef PubMed CAS Google Scholar
First citationMasaoka, S., Furukawa, S., Chang, H. C., Mizutani, T. & Kitagawa, S. (2001). Angew. Chem. Int. Ed. 40, 3817–3819.  CrossRef CAS Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationWang, X. L., Qin, C. & Wang, E. B. (2006). Cryst. Growth Des. 6, 439–443.  Web of Science CSD CrossRef CAS Google Scholar

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