metal-organic compounds
catena-Poly[sodium [[tris(3-methylpyridine-2-carboxylato)europate(III)]-μ-3-methylpyridine-2-carboxylato] trihydrate]
aDepartment of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
*Correspondence e-mail: skkang@cnu.ac.kr
In the title structure, {Na[Eu(C7H6NO2)4]·3H2O}n, the EuIII atom is nine-coordinated within a slightly distorted tricapped trigonal-prismatic coordination geometry defined by five carboxylate-O atoms and four pyridine-N atoms. One of the carboxylate ligands bridges the Eu cations, forming a one-dimensional coordination polymer along the b axis. The Eu—O bond distances lie within the range 2.362 (4)–2.461 (4) Å. In the intermolecular O—H⋯O hydrogen bonds link the polymers into a three-dimensional network.
Related literature
For general background to pyridine carboxylic complexes, see: Seo et al. (2010); Kukovec et al. (2009); Hong et al. (2008); Soares-Santos et al. (2006). For the syntheses and structures of Eu complexes, see: Lis et al. (2009); Godlewska et al. (2008); Legendziewicz et al. (2002).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2010); software used to prepare material for publication: WinGX publication routines (Farrugia, 1999).
Supporting information
https://doi.org/10.1107/S160053681003151X/tk2695sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053681003151X/tk2695Isup2.hkl
Europium trichloride solution was prepared by dissolving EuCl3 6H2O (0.37 g, 1.0 mmol; Aldrich) in absolute ethanol (20 ml) at room temperature with stirring. The ligand solution was prepared by dissolving 3-methylpicolinic acid (0.55 g, 4.0 mmol; Aldrich) in absolute ethanol (30 ml) at room temperature. The pH of the ligand solution was adjusted to about 6 with 2 N NaOH solution. The Eu solution was added drop wise and slowly to the ligand solution. The reaction mixture was stirred for 2 h at room temperature. Colourless crystals of (I) were obtained at room temperature over a period of a few weeks. The complex was recrystallized from distilled water.
The water-H atoms were located in a difference Fourier map and refined with O—H = 0.82±0.01 Å. The remaining H atoms were positioned geometrically and refined using a riding model with C—H = 0.94 - 0.97 Å, and with Uiso(H) = 1.2Ueq (C) for aromatic-H and 1.5Ueq(C) for methyl-H atoms. The maximum and minimum residual electron density peaks of 1.77 and -1.63 eÅ-3, respectively, were located 1.55 Å and 0.79 Å from the O39 and Eu1 atoms, respectively.
Metal complexes of picolinic acid and their derivatives have been of considerable interest due to their adoption of various coordination modes and their interesting photophysical properties (Seo et al., 2010; Kukovec et al., 2009; Hong et al., 2008; Soares-Santos et al., 2006). Especially, Eu(III) complexes have been extensively studied due to their unique luminescence properties such as narrow emission bands and the excitation spectra of the five-dimensional0 — > 7F0 transition (Lis et al., 2009; Godlewska et al., 2008; Legendziewicz et al., 2002). In this study, we report the synthesis and characterization of a Eu(III)-picolinic acid derivative in order to develop new lanthanide complexes for novel photoluminescent applications.
In the title one-dimensional coordination polymer, {Na[Eu(C7H6NO2)4] 3H2O}n, the Eu atom is nine-coordinate within a slightly distorted tricapped trigonal prismatic coordination geometry. The Eu(III) atom is coordinated to the five carboxylate-O atoms and four pyridine-N atoms. The Eu—O bond distances are within the range of 2.362 (4) - 2.461 (4) Å, Table 1, which are significantly shorter than the sum of the covalent radii of Eu and O atoms (2.66 Å). The dihedral angles between the pyridine rings and the carboxylate groups are in the range of 5.0 (4) - 24.7 (4) °. One of the carboxylate ligands bridges Eu cations to form a one-dimensional coordination polymer along the crystallographic b axis (Fig. 2). Intramolecular O—H···O hydrogen bonds link the uncoordinated water molecules to the coordinated water molecules, Table 2. In the
intermolecular O—H···O hydrogen bonds link the polymers into a three-dimensional network, Table 2. The title compound exhibits an intense emission at 618 nm upon 396 nm excitation in PL spectra with 325 nm of He—Cd laser excitation wavelength.For general background to pyridine carboxylic complexes, see: Seo et al. (2010); Kukovec et al. (2009); Hong et al. (2008); Soares-Santos et al. (2006). For the syntheses and structures of Eu complexes, see: Lis et al. (2009); Godlewska et al. (2008); Legendziewicz et al. (2002).
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2010); software used to prepare material for publication: WinGX publication routines (Farrugia, 1999).Fig. 1. Molecular structure of the title complex showing the atom-numbering scheme and 50% probability ellipsoids. H atoms have been omitted for clarity. [Symmetry code: (i) -x + 3/2, y - 1/2, -z + 1/2] | |
Fig. 2. One-dimensional supramolecular chain along the b axis. H atoms have been omitted for clarity. |
Na[Eu(C7H6NO2)4]·3H2O | F(000) = 1552 |
Mr = 773.51 | Dx = 1.655 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 3070 reflections |
a = 11.721 (3) Å | θ = 2.5–20.6° |
b = 12.615 (4) Å | µ = 2.10 mm−1 |
c = 21.133 (6) Å | T = 233 K |
β = 96.585 (7)° | Block, colourless |
V = 3104.1 (16) Å3 | 0.22 × 0.15 × 0.14 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 4104 reflections with I > 2σ(I) |
φ and ω scans | Rint = 0.088 |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | θmax = 25.5°, θmin = 1.9° |
Tmin = 0.583, Tmax = 0.741 | h = −14→14 |
25592 measured reflections | k = −15→15 |
5782 independent reflections | l = −25→25 |
Refinement on F2 | 6 restraints |
Least-squares matrix: full | H atoms treated by a mixture of independent and constrained refinement |
R[F2 > 2σ(F2)] = 0.045 | w = 1/[σ2(Fo2) + 1.5543P] where P = (Fo2 + 2Fc2)/3 |
wR(F2) = 0.148 | (Δ/σ)max = 0.001 |
S = 1.05 | Δρmax = 1.77 e Å−3 |
5782 reflections | Δρmin = −1.63 e Å−3 |
428 parameters |
Na[Eu(C7H6NO2)4]·3H2O | V = 3104.1 (16) Å3 |
Mr = 773.51 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 11.721 (3) Å | µ = 2.10 mm−1 |
b = 12.615 (4) Å | T = 233 K |
c = 21.133 (6) Å | 0.22 × 0.15 × 0.14 mm |
β = 96.585 (7)° |
Bruker SMART CCD area-detector diffractometer | 5782 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 4104 reflections with I > 2σ(I) |
Tmin = 0.583, Tmax = 0.741 | Rint = 0.088 |
25592 measured reflections |
R[F2 > 2σ(F2)] = 0.045 | 6 restraints |
wR(F2) = 0.148 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 1.77 e Å−3 |
5782 reflections | Δρmin = −1.63 e Å−3 |
428 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. |
x | y | z | Uiso*/Ueq | ||
Eu1 | 0.73313 (3) | 0.28658 (2) | 0.240306 (15) | 0.02324 (14) | |
N1 | 0.9295 (5) | 0.3407 (4) | 0.3039 (3) | 0.0301 (13) | |
C2 | 1.0234 (6) | 0.2942 (5) | 0.2843 (4) | 0.0314 (17) | |
C3 | 1.1302 (7) | 0.2917 (6) | 0.3230 (4) | 0.043 (2) | |
C4 | 1.1340 (8) | 0.3421 (7) | 0.3822 (4) | 0.053 (2) | |
H4 | 1.2033 | 0.3425 | 0.4095 | 0.063* | |
C5 | 1.0396 (7) | 0.3910 (6) | 0.4014 (4) | 0.044 (2) | |
H5 | 1.0435 | 0.4255 | 0.441 | 0.053* | |
C6 | 0.9388 (7) | 0.3882 (6) | 0.3610 (4) | 0.0413 (19) | |
H6 | 0.8735 | 0.4212 | 0.3741 | 0.05* | |
C7 | 1.0039 (7) | 0.2447 (6) | 0.2190 (4) | 0.0374 (18) | |
O8 | 0.9005 (4) | 0.2233 (3) | 0.1990 (2) | 0.0311 (11) | |
O9 | 1.0864 (5) | 0.2306 (5) | 0.1881 (3) | 0.067 (2) | |
C10 | 1.2366 (8) | 0.2388 (8) | 0.3051 (6) | 0.069 (3) | |
H10A | 1.2968 | 0.2429 | 0.3405 | 0.104* | |
H10B | 1.2615 | 0.2743 | 0.2683 | 0.104* | |
H10C | 1.2201 | 0.165 | 0.2947 | 0.104* | |
N11 | 0.5296 (5) | 0.3202 (5) | 0.1801 (3) | 0.0291 (13) | |
C12 | 0.4908 (6) | 0.2464 (5) | 0.1358 (3) | 0.0268 (15) | |
C13 | 0.3748 (7) | 0.2430 (6) | 0.1098 (4) | 0.0355 (17) | |
C14 | 0.3025 (7) | 0.3207 (6) | 0.1293 (4) | 0.043 (2) | |
H14 | 0.2244 | 0.32 | 0.1133 | 0.052* | |
C15 | 0.3431 (7) | 0.3994 (7) | 0.1720 (4) | 0.051 (2) | |
H15 | 0.2951 | 0.4541 | 0.1836 | 0.061* | |
C16 | 0.4579 (6) | 0.3936 (6) | 0.1967 (4) | 0.0381 (18) | |
H16 | 0.4863 | 0.4446 | 0.2269 | 0.046* | |
C17 | 0.5823 (6) | 0.1697 (5) | 0.1196 (3) | 0.0312 (16) | |
O18 | 0.6691 (4) | 0.1589 (3) | 0.1622 (2) | 0.0276 (10) | |
O19 | 0.5705 (5) | 0.1243 (4) | 0.0678 (2) | 0.0409 (13) | |
C20 | 0.3256 (7) | 0.1569 (6) | 0.0649 (4) | 0.052 (2) | |
H20A | 0.3226 | 0.0908 | 0.0881 | 0.078* | |
H20B | 0.374 | 0.1481 | 0.0309 | 0.078* | |
H20C | 0.2487 | 0.1766 | 0.0468 | 0.078* | |
N21 | 0.5686 (5) | 0.1796 (5) | 0.2975 (3) | 0.0313 (14) | |
C22 | 0.5719 (6) | 0.2005 (5) | 0.3608 (3) | 0.0264 (15) | |
C23 | 0.5236 (7) | 0.1327 (5) | 0.4029 (3) | 0.0357 (17) | |
C24 | 0.4677 (7) | 0.0435 (6) | 0.3758 (4) | 0.0419 (19) | |
H24 | 0.4342 | −0.0046 | 0.4022 | 0.05* | |
C25 | 0.4604 (7) | 0.0241 (6) | 0.3116 (4) | 0.0416 (19) | |
H25 | 0.4195 | −0.0348 | 0.2936 | 0.05* | |
C26 | 0.5146 (7) | 0.0935 (6) | 0.2739 (4) | 0.0402 (19) | |
H26 | 0.5131 | 0.079 | 0.2302 | 0.048* | |
C27 | 0.6349 (6) | 0.3030 (5) | 0.3811 (3) | 0.0296 (16) | |
O28 | 0.6793 (4) | 0.3518 (3) | 0.3374 (2) | 0.0294 (11) | |
O29 | 0.6355 (5) | 0.3339 (4) | 0.4368 (2) | 0.0386 (12) | |
C30 | 0.5320 (9) | 0.1480 (7) | 0.4743 (4) | 0.060 (3) | |
H30A | 0.6116 | 0.1599 | 0.491 | 0.09* | |
H30B | 0.5037 | 0.0851 | 0.4938 | 0.09* | |
H30C | 0.4862 | 0.2088 | 0.4838 | 0.09* | |
N31 | 0.7520 (5) | 0.3872 (4) | 0.1301 (3) | 0.0317 (14) | |
C32 | 0.7060 (6) | 0.4861 (5) | 0.1258 (3) | 0.0314 (16) | |
C33 | 0.6665 (7) | 0.5319 (5) | 0.0673 (3) | 0.0371 (18) | |
C34 | 0.6810 (8) | 0.4736 (6) | 0.0131 (4) | 0.048 (2) | |
H34 | 0.6543 | 0.5012 | −0.0273 | 0.058* | |
C35 | 0.7342 (8) | 0.3756 (6) | 0.0175 (4) | 0.051 (2) | |
H35 | 0.7467 | 0.338 | −0.0195 | 0.061* | |
C36 | 0.7687 (7) | 0.3338 (6) | 0.0771 (4) | 0.0407 (19) | |
H36 | 0.8043 | 0.267 | 0.0804 | 0.049* | |
C37 | 0.7039 (6) | 0.5389 (5) | 0.1895 (3) | 0.0284 (15) | |
O38 | 0.7132 (4) | 0.4795 (3) | 0.2383 (2) | 0.0270 (11) | |
O39 | 0.6971 (4) | 0.6366 (3) | 0.1914 (2) | 0.0302 (11) | |
C40 | 0.6091 (8) | 0.6392 (6) | 0.0615 (4) | 0.052 (2) | |
H40A | 0.5529 | 0.6441 | 0.0917 | 0.079* | |
H40B | 0.571 | 0.6481 | 0.0186 | 0.079* | |
H40C | 0.6664 | 0.6942 | 0.0705 | 0.079* | |
Na1 | 0.8432 (2) | 0.0484 (2) | 0.16277 (12) | 0.0320 (6) | |
O41 | 0.7863 (5) | 0.0404 (4) | 0.0495 (3) | 0.0408 (13) | |
H41A | 0.777 (7) | −0.022 (2) | 0.058 (4) | 0.049* | |
H41B | 0.720 (3) | 0.060 (6) | 0.048 (4) | 0.049* | |
O42 | 1.0436 (6) | 0.0189 (5) | 0.1588 (3) | 0.0574 (16) | |
H42A | 1.020 (9) | 0.068 (5) | 0.136 (4) | 0.069* | |
H42B | 1.073 (8) | −0.003 (8) | 0.128 (3) | 0.069* | |
O43 | 1.0969 (6) | −0.1006 (6) | 0.0514 (3) | 0.0682 (19) | |
H43A | 1.111 (9) | −0.090 (8) | 0.015 (2) | 0.082* | |
H43B | 1.028 (3) | −0.113 (8) | 0.040 (5) | 0.082* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Eu1 | 0.0261 (2) | 0.0200 (2) | 0.0234 (2) | 0.00011 (13) | 0.00207 (15) | −0.00091 (13) |
N1 | 0.032 (3) | 0.023 (3) | 0.035 (3) | −0.004 (3) | 0.000 (3) | −0.005 (3) |
C2 | 0.027 (4) | 0.016 (3) | 0.052 (5) | −0.004 (3) | 0.006 (4) | 0.001 (3) |
C3 | 0.032 (4) | 0.036 (4) | 0.059 (6) | 0.001 (3) | −0.007 (4) | 0.008 (4) |
C4 | 0.050 (6) | 0.052 (5) | 0.050 (5) | −0.002 (4) | −0.018 (4) | 0.006 (4) |
C5 | 0.047 (5) | 0.041 (4) | 0.041 (5) | −0.008 (4) | −0.009 (4) | −0.005 (4) |
C6 | 0.048 (5) | 0.030 (4) | 0.045 (5) | −0.002 (3) | 0.002 (4) | −0.003 (3) |
C7 | 0.035 (5) | 0.029 (4) | 0.050 (5) | 0.001 (3) | 0.012 (4) | −0.001 (3) |
O8 | 0.025 (3) | 0.032 (3) | 0.036 (3) | 0.001 (2) | 0.005 (2) | −0.005 (2) |
O9 | 0.032 (3) | 0.095 (5) | 0.079 (5) | −0.023 (3) | 0.030 (3) | −0.039 (4) |
C10 | 0.040 (6) | 0.073 (6) | 0.093 (8) | 0.014 (5) | −0.002 (6) | 0.002 (6) |
N11 | 0.020 (3) | 0.035 (3) | 0.033 (3) | 0.005 (3) | 0.002 (3) | −0.006 (3) |
C12 | 0.025 (4) | 0.029 (3) | 0.026 (4) | 0.003 (3) | −0.002 (3) | 0.006 (3) |
C13 | 0.034 (4) | 0.037 (4) | 0.035 (4) | 0.001 (3) | −0.001 (4) | 0.009 (3) |
C14 | 0.033 (4) | 0.043 (4) | 0.054 (5) | 0.007 (4) | 0.003 (4) | 0.005 (4) |
C15 | 0.033 (5) | 0.052 (5) | 0.068 (6) | 0.016 (4) | 0.013 (4) | −0.004 (4) |
C16 | 0.032 (4) | 0.037 (4) | 0.047 (5) | −0.003 (3) | 0.010 (4) | 0.002 (3) |
C17 | 0.035 (4) | 0.029 (4) | 0.029 (4) | −0.003 (3) | −0.001 (3) | 0.000 (3) |
O18 | 0.025 (2) | 0.026 (2) | 0.029 (3) | −0.002 (2) | −0.005 (2) | −0.002 (2) |
O19 | 0.048 (3) | 0.040 (3) | 0.032 (3) | −0.001 (2) | −0.002 (3) | −0.011 (2) |
C20 | 0.043 (5) | 0.048 (5) | 0.059 (6) | 0.000 (4) | −0.022 (4) | −0.005 (4) |
N21 | 0.033 (3) | 0.028 (3) | 0.033 (3) | 0.001 (3) | 0.006 (3) | 0.003 (3) |
C22 | 0.030 (4) | 0.021 (3) | 0.028 (4) | 0.001 (3) | 0.005 (3) | 0.007 (3) |
C23 | 0.049 (5) | 0.024 (4) | 0.036 (4) | 0.001 (3) | 0.014 (4) | 0.007 (3) |
C24 | 0.042 (5) | 0.031 (4) | 0.054 (5) | −0.005 (3) | 0.013 (4) | 0.007 (4) |
C25 | 0.039 (5) | 0.034 (4) | 0.053 (5) | −0.010 (3) | 0.010 (4) | −0.006 (4) |
C26 | 0.045 (5) | 0.040 (4) | 0.035 (4) | −0.009 (4) | 0.003 (4) | −0.006 (3) |
C27 | 0.030 (4) | 0.033 (4) | 0.025 (4) | 0.008 (3) | 0.003 (3) | 0.001 (3) |
O28 | 0.040 (3) | 0.024 (2) | 0.027 (2) | −0.002 (2) | 0.015 (2) | −0.006 (2) |
O29 | 0.049 (3) | 0.040 (3) | 0.027 (3) | −0.007 (3) | 0.008 (2) | −0.001 (2) |
C30 | 0.100 (8) | 0.041 (5) | 0.041 (5) | −0.026 (5) | 0.018 (5) | 0.005 (4) |
N31 | 0.038 (4) | 0.026 (3) | 0.032 (3) | −0.004 (3) | 0.007 (3) | −0.001 (2) |
C32 | 0.039 (4) | 0.023 (4) | 0.033 (4) | −0.001 (3) | 0.009 (3) | 0.000 (3) |
C33 | 0.045 (5) | 0.035 (4) | 0.031 (4) | −0.012 (3) | −0.002 (4) | 0.005 (3) |
C34 | 0.075 (6) | 0.045 (5) | 0.026 (4) | −0.016 (4) | 0.005 (4) | 0.001 (4) |
C35 | 0.085 (7) | 0.039 (5) | 0.032 (4) | −0.011 (4) | 0.019 (5) | −0.005 (4) |
C36 | 0.062 (5) | 0.027 (4) | 0.037 (4) | −0.003 (4) | 0.018 (4) | −0.003 (3) |
C37 | 0.029 (4) | 0.022 (4) | 0.034 (4) | −0.003 (3) | 0.000 (3) | 0.001 (3) |
O38 | 0.044 (3) | 0.007 (2) | 0.031 (3) | 0.0076 (18) | 0.009 (2) | 0.0021 (18) |
O39 | 0.039 (3) | 0.022 (2) | 0.029 (3) | −0.002 (2) | 0.003 (2) | −0.006 (2) |
C40 | 0.065 (6) | 0.040 (5) | 0.050 (5) | −0.005 (4) | −0.005 (5) | 0.011 (4) |
Na1 | 0.0388 (16) | 0.0279 (14) | 0.0295 (14) | 0.0015 (12) | 0.0048 (13) | −0.0019 (11) |
O41 | 0.054 (4) | 0.038 (3) | 0.032 (3) | 0.007 (3) | 0.013 (3) | 0.002 (2) |
O42 | 0.057 (4) | 0.058 (4) | 0.061 (4) | 0.007 (3) | 0.020 (4) | −0.005 (3) |
O43 | 0.049 (4) | 0.107 (5) | 0.052 (4) | −0.013 (4) | 0.018 (4) | −0.001 (4) |
Eu1—O28 | 2.362 (4) | N21—C22 | 1.360 (9) |
Eu1—O18 | 2.366 (4) | C22—C23 | 1.399 (9) |
Eu1—O8 | 2.375 (5) | C22—C27 | 1.526 (9) |
Eu1—O38 | 2.445 (4) | C23—C24 | 1.392 (10) |
Eu1—O39i | 2.461 (4) | C23—C30 | 1.513 (11) |
Eu1—N11 | 2.606 (5) | C24—C25 | 1.371 (11) |
Eu1—N1 | 2.619 (6) | C24—H24 | 0.94 |
Eu1—N31 | 2.683 (6) | C25—C26 | 1.386 (10) |
Eu1—N21 | 2.745 (6) | C25—H25 | 0.94 |
N1—C6 | 1.341 (9) | C26—H26 | 0.94 |
N1—C2 | 1.354 (9) | C27—O29 | 1.238 (8) |
C2—C3 | 1.415 (11) | C27—O28 | 1.271 (8) |
C2—C7 | 1.507 (11) | O28—Na1ii | 2.495 (5) |
C3—C4 | 1.399 (12) | C30—H30A | 0.97 |
C3—C10 | 1.501 (12) | C30—H30B | 0.97 |
C4—C5 | 1.368 (12) | C30—H30C | 0.97 |
C4—H4 | 0.94 | N31—C36 | 1.342 (9) |
C5—C6 | 1.376 (11) | N31—C32 | 1.359 (8) |
C5—H5 | 0.94 | C32—C33 | 1.395 (10) |
C6—H6 | 0.94 | C32—C37 | 1.505 (9) |
C7—O9 | 1.242 (9) | C33—C34 | 1.389 (10) |
C7—O8 | 1.266 (9) | C33—C40 | 1.510 (11) |
O8—Na1 | 2.405 (5) | C34—C35 | 1.382 (12) |
C10—H10A | 0.97 | C34—H34 | 0.94 |
C10—H10B | 0.97 | C35—C36 | 1.382 (11) |
C10—H10C | 0.97 | C35—H35 | 0.94 |
N11—C16 | 1.325 (9) | C36—H36 | 0.94 |
N11—C12 | 1.360 (9) | C37—O39 | 1.236 (7) |
C12—C13 | 1.408 (10) | C37—O38 | 1.269 (8) |
C12—C17 | 1.512 (10) | O38—Na1ii | 2.425 (5) |
C13—C14 | 1.389 (11) | O39—Eu1ii | 2.461 (4) |
C13—C20 | 1.513 (11) | C40—H40A | 0.97 |
C14—C15 | 1.388 (12) | C40—H40B | 0.97 |
C14—H14 | 0.94 | C40—H40C | 0.97 |
C15—C16 | 1.389 (11) | Na1—O42 | 2.390 (7) |
C15—H15 | 0.94 | Na1—O41 | 2.412 (6) |
C16—H16 | 0.94 | Na1—O38i | 2.425 (5) |
C17—O19 | 1.229 (8) | Na1—O28i | 2.495 (5) |
C17—O18 | 1.287 (8) | O41—H41A | 0.82 (2) |
O18—Na1 | 2.470 (5) | O41—H41B | 0.81 (2) |
C20—H20A | 0.97 | O42—H42A | 0.81 (4) |
C20—H20B | 0.97 | O42—H42B | 0.82 (4) |
C20—H20C | 0.97 | O43—H43A | 0.82 (3) |
N21—C26 | 1.326 (9) | O43—H43B | 0.83 (2) |
O28—Eu1—O18 | 138.38 (16) | H20A—C20—H20C | 109.5 |
O28—Eu1—O8 | 138.64 (17) | H20B—C20—H20C | 109.5 |
O18—Eu1—O8 | 73.99 (16) | C26—N21—C22 | 119.2 (6) |
O28—Eu1—O38 | 68.54 (14) | C26—N21—Eu1 | 124.5 (5) |
O18—Eu1—O38 | 130.08 (15) | C22—N21—Eu1 | 113.3 (4) |
O8—Eu1—O38 | 114.16 (15) | N21—C22—C23 | 122.6 (6) |
O28—Eu1—O39i | 82.10 (15) | N21—C22—C27 | 113.5 (6) |
O18—Eu1—O39i | 86.72 (15) | C23—C22—C27 | 123.9 (6) |
O8—Eu1—O39i | 73.99 (16) | C24—C23—C22 | 116.0 (7) |
O38—Eu1—O39i | 143.12 (15) | C24—C23—C30 | 119.1 (7) |
O28—Eu1—N11 | 92.68 (17) | C22—C23—C30 | 124.8 (7) |
O18—Eu1—N11 | 64.57 (16) | C25—C24—C23 | 121.6 (7) |
O8—Eu1—N11 | 128.55 (17) | C25—C24—H24 | 119.2 |
O38—Eu1—N11 | 75.50 (17) | C23—C24—H24 | 119.2 |
O39i—Eu1—N11 | 129.43 (17) | C24—C25—C26 | 118.3 (7) |
O28—Eu1—N1 | 76.71 (17) | C24—C25—H25 | 120.8 |
O18—Eu1—N1 | 136.50 (16) | C26—C25—H25 | 120.8 |
O8—Eu1—N1 | 64.04 (17) | N21—C26—C25 | 122.2 (7) |
O38—Eu1—N1 | 79.96 (16) | N21—C26—H26 | 118.9 |
O39i—Eu1—N1 | 71.71 (16) | C25—C26—H26 | 118.9 |
N11—Eu1—N1 | 155.41 (18) | O29—C27—O28 | 125.5 (7) |
O28—Eu1—N31 | 130.23 (16) | O29—C27—C22 | 118.9 (6) |
O18—Eu1—N31 | 76.59 (16) | O28—C27—C22 | 115.5 (6) |
O8—Eu1—N31 | 71.71 (17) | C27—O28—Eu1 | 129.5 (4) |
O38—Eu1—N31 | 62.05 (15) | C27—O28—Na1ii | 115.5 (4) |
O39i—Eu1—N31 | 144.81 (17) | Eu1—O28—Na1ii | 112.56 (18) |
N11—Eu1—N31 | 70.19 (18) | C23—C30—H30A | 109.5 |
N1—Eu1—N31 | 99.62 (18) | C23—C30—H30B | 109.5 |
O28—Eu1—N21 | 61.14 (16) | H30A—C30—H30B | 109.5 |
O18—Eu1—N21 | 77.87 (17) | C23—C30—H30C | 109.5 |
O8—Eu1—N21 | 130.42 (17) | H30A—C30—H30C | 109.5 |
O38—Eu1—N21 | 115.25 (16) | H30B—C30—H30C | 109.5 |
O39i—Eu1—N21 | 64.34 (17) | C36—N31—C32 | 120.0 (6) |
N11—Eu1—N21 | 69.23 (18) | C36—N31—Eu1 | 121.5 (4) |
N1—Eu1—N21 | 121.48 (18) | C32—N31—Eu1 | 114.9 (4) |
N31—Eu1—N21 | 138.30 (18) | N31—C32—C33 | 121.9 (6) |
O28—Eu1—Na1 | 143.49 (12) | N31—C32—C37 | 113.2 (6) |
O18—Eu1—Na1 | 40.69 (11) | C33—C32—C37 | 124.9 (6) |
O8—Eu1—Na1 | 39.15 (12) | C34—C33—C32 | 116.9 (7) |
O38—Eu1—Na1 | 146.40 (11) | C34—C33—C40 | 120.2 (7) |
O39i—Eu1—Na1 | 61.90 (11) | C32—C33—C40 | 122.8 (7) |
N11—Eu1—Na1 | 105.07 (13) | C35—C34—C33 | 120.9 (7) |
N1—Eu1—Na1 | 96.20 (13) | C35—C34—H34 | 119.5 |
N31—Eu1—Na1 | 86.14 (13) | C33—C34—H34 | 119.5 |
N21—Eu1—Na1 | 95.37 (13) | C36—C35—C34 | 119.1 (7) |
O28—Eu1—Na1ii | 34.76 (11) | C36—C35—H35 | 120.5 |
O18—Eu1—Na1ii | 147.06 (11) | C34—C35—H35 | 120.5 |
O8—Eu1—Na1ii | 134.53 (12) | N31—C36—C35 | 120.9 (7) |
O38—Eu1—Na1ii | 33.77 (11) | N31—C36—H36 | 119.5 |
O39i—Eu1—Na1ii | 114.16 (11) | C35—C36—H36 | 119.5 |
N11—Eu1—Na1ii | 82.61 (13) | O39—C37—O38 | 124.2 (6) |
N1—Eu1—Na1ii | 76.06 (13) | O39—C37—C32 | 118.5 (6) |
N31—Eu1—Na1ii | 95.64 (12) | O38—C37—C32 | 117.2 (5) |
N21—Eu1—Na1ii | 88.33 (13) | C37—O38—Na1ii | 118.8 (4) |
Na1—Eu1—Na1ii | 172.242 (13) | C37—O38—Eu1 | 126.9 (4) |
C6—N1—C2 | 119.0 (6) | Na1ii—O38—Eu1 | 112.13 (17) |
C6—N1—Eu1 | 123.7 (5) | C37—O39—Eu1ii | 140.1 (4) |
C2—N1—Eu1 | 115.3 (4) | C33—C40—H40A | 109.5 |
N1—C2—C3 | 121.9 (7) | C33—C40—H40B | 109.5 |
N1—C2—C7 | 114.6 (6) | H40A—C40—H40B | 109.5 |
C3—C2—C7 | 123.4 (7) | C33—C40—H40C | 109.5 |
C4—C3—C2 | 116.3 (8) | H40A—C40—H40C | 109.5 |
C4—C3—C10 | 119.1 (8) | H40B—C40—H40C | 109.5 |
C2—C3—C10 | 124.7 (8) | O42—Na1—O8 | 85.1 (2) |
C5—C4—C3 | 121.7 (8) | O42—Na1—O41 | 96.8 (2) |
C5—C4—H4 | 119.2 | O8—Na1—O41 | 112.9 (2) |
C3—C4—H4 | 119.2 | O42—Na1—O38i | 109.9 (2) |
C4—C5—C6 | 118.1 (8) | O8—Na1—O38i | 98.53 (18) |
C4—C5—H5 | 120.9 | O41—Na1—O38i | 140.2 (2) |
C6—C5—H5 | 120.9 | O42—Na1—O18 | 154.5 (2) |
N1—C6—C5 | 123.0 (8) | O8—Na1—O18 | 71.62 (17) |
N1—C6—H6 | 118.5 | O41—Na1—O18 | 83.39 (18) |
C5—C6—H6 | 118.5 | O38i—Na1—O18 | 84.22 (17) |
O9—C7—O8 | 124.5 (8) | O42—Na1—O28i | 87.1 (2) |
O9—C7—C2 | 119.8 (7) | O8—Na1—O28i | 159.7 (2) |
O8—C7—C2 | 115.7 (6) | O41—Na1—O28i | 86.55 (18) |
C7—O8—Eu1 | 127.2 (5) | O38i—Na1—O28i | 66.77 (15) |
C7—O8—Na1 | 121.6 (4) | O18—Na1—O28i | 118.29 (18) |
Eu1—O8—Na1 | 102.29 (19) | O42—Na1—Eu1 | 122.20 (18) |
C3—C10—H10A | 109.5 | O8—Na1—Eu1 | 38.56 (12) |
C3—C10—H10B | 109.5 | O41—Na1—Eu1 | 113.60 (15) |
H10A—C10—H10B | 109.5 | O38i—Na1—Eu1 | 76.54 (12) |
C3—C10—H10C | 109.5 | O18—Na1—Eu1 | 38.65 (11) |
H10A—C10—H10C | 109.5 | O28i—Na1—Eu1 | 139.58 (14) |
H10B—C10—H10C | 109.5 | O42—Na1—Eu1i | 99.58 (18) |
C16—N11—C12 | 119.2 (6) | O8—Na1—Eu1i | 131.19 (15) |
C16—N11—Eu1 | 123.9 (5) | O41—Na1—Eu1i | 114.62 (15) |
C12—N11—Eu1 | 116.1 (4) | O38i—Na1—Eu1i | 34.09 (10) |
N11—C12—C13 | 121.4 (6) | O18—Na1—Eu1i | 103.45 (13) |
N11—C12—C17 | 113.8 (6) | O28i—Na1—Eu1i | 32.67 (10) |
C13—C12—C17 | 124.8 (6) | Eu1—Na1—Eu1i | 109.18 (7) |
C14—C13—C12 | 117.2 (7) | O42—Na1—H41A | 97 (2) |
C14—C13—C20 | 119.5 (7) | O8—Na1—H41A | 132.3 (6) |
C12—C13—C20 | 123.3 (7) | O41—Na1—H41A | 19.4 (6) |
C15—C14—C13 | 121.5 (8) | O38i—Na1—H41A | 124.4 (12) |
C15—C14—H14 | 119.2 | O18—Na1—H41A | 91.5 (18) |
C13—C14—H14 | 119.2 | O28i—Na1—H41A | 67.2 (7) |
C14—C15—C16 | 116.8 (7) | Eu1—Na1—H41A | 127.3 (16) |
C14—C15—H15 | 121.6 | Eu1i—Na1—H41A | 95.6 (7) |
C16—C15—H15 | 121.6 | O42—Na1—H42A | 19.9 (10) |
N11—C16—C15 | 123.7 (7) | O8—Na1—H42A | 75 (2) |
N11—C16—H16 | 118.2 | O41—Na1—H42A | 85 (2) |
C15—C16—H16 | 118.2 | O38i—Na1—H42A | 127.8 (14) |
O19—C17—O18 | 125.0 (7) | O18—Na1—H42A | 136.9 (11) |
O19—C17—C12 | 119.3 (6) | O28i—Na1—H42A | 102.2 (18) |
O18—C17—C12 | 115.6 (6) | Eu1—Na1—H42A | 114 (2) |
C17—O18—Eu1 | 125.3 (4) | Eu1i—Na1—H42A | 119.1 (8) |
C17—O18—Na1 | 130.5 (4) | H41A—Na1—H42A | 91 (3) |
Eu1—O18—Na1 | 100.66 (17) | Na1—O41—H41B | 101 (7) |
C13—C20—H20A | 109.5 | H41A—O41—H41B | 99 (8) |
C13—C20—H20B | 109.5 | Na1—O42—H42B | 126 (7) |
H20A—C20—H20B | 109.5 | H42A—O42—H42B | 86 (10) |
C13—C20—H20C | 109.5 | H43A—O43—H43B | 93 (10) |
Symmetry codes: (i) −x+3/2, y−1/2, −z+1/2; (ii) −x+3/2, y+1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O41—H41A···O29i | 0.82 (2) | 2.08 (6) | 2.767 (7) | 141 (8) |
O41—H41B···O19 | 0.81 (2) | 2.02 (3) | 2.809 (8) | 164 (9) |
O42—H42A···O9 | 0.81 (4) | 2.41 (10) | 2.774 (9) | 108 (8) |
O42—H42B···O43 | 0.82 (4) | 2.08 (4) | 2.852 (10) | 158 (10) |
O43—H43A···O41iii | 0.82 (3) | 2.02 (6) | 2.769 (9) | 152 (11) |
O43—H43B···O29i | 0.83 (2) | 2.14 (6) | 2.884 (8) | 149 (10) |
Symmetry codes: (i) −x+3/2, y−1/2, −z+1/2; (iii) −x+2, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | Na[Eu(C7H6NO2)4]·3H2O |
Mr | 773.51 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 233 |
a, b, c (Å) | 11.721 (3), 12.615 (4), 21.133 (6) |
β (°) | 96.585 (7) |
V (Å3) | 3104.1 (16) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 2.10 |
Crystal size (mm) | 0.22 × 0.15 × 0.14 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.583, 0.741 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 25592, 5782, 4104 |
Rint | 0.088 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.045, 0.148, 1.05 |
No. of reflections | 5782 |
No. of parameters | 428 |
No. of restraints | 6 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 1.77, −1.63 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg, 2010), WinGX publication routines (Farrugia, 1999).
Eu1—O28 | 2.362 (4) | Eu1—N11 | 2.606 (5) |
Eu1—O18 | 2.366 (4) | Eu1—N1 | 2.619 (6) |
Eu1—O8 | 2.375 (5) | Eu1—N31 | 2.683 (6) |
Eu1—O38 | 2.445 (4) | Eu1—N21 | 2.745 (6) |
Eu1—O39i | 2.461 (4) |
Symmetry code: (i) −x+3/2, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O41—H41A···O29i | 0.82 (2) | 2.08 (6) | 2.767 (7) | 141 (8) |
O41—H41B···O19 | 0.81 (2) | 2.02 (3) | 2.809 (8) | 164 (9) |
O42—H42A···O9 | 0.81 (4) | 2.41 (10) | 2.774 (9) | 108 (8) |
O42—H42B···O43 | 0.82 (4) | 2.08 (4) | 2.852 (10) | 158 (10) |
O43—H43A···O41ii | 0.82 (3) | 2.02 (6) | 2.769 (9) | 152 (11) |
O43—H43B···O29i | 0.83 (2) | 2.14 (6) | 2.884 (8) | 149 (10) |
Symmetry codes: (i) −x+3/2, y−1/2, −z+1/2; (ii) −x+2, −y, −z. |
Acknowledgements
The X-ray data were collected at the Center for Research Facilities at Chungnam National University.
References
Brandenburg, K. (2010). Diamond, Crystal Impact GbR, Bonn, Germany. Google Scholar
Bruker (2002). SADABS, SAINT and SMART. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837–838. CrossRef CAS IUCr Journals Google Scholar
Godlewska, P., Macalik, L. & Hanuza, J. (2008). J. Alloys Compd, 451, 236–239. Web of Science CrossRef CAS Google Scholar
Hong, J. H., Oh, Y., Kim, Y., Kang, S. K., Choi, J., Kim, W. S., Lee, J. I., Kim, S. & Hur, N. H. (2008). Cryst. Growth Des., 8, 1364–1371. Web of Science CSD CrossRef CAS Google Scholar
Kukovec, B., Popovic, Z., Komorsky-Lovric, S., Vojkovic, V. & Vinkovic, M. (2009). Inorg. Chim. Acta, 362, 2704–2714. Web of Science CSD CrossRef CAS Google Scholar
Legendziewicz, J. (2002). J. Alloys Compd. 341, 34–44. Web of Science CrossRef CAS Google Scholar
Lis, S., Piskula, Z. & Kubicki, M. (2009). Mater. Chem. Phys. 114, 134–138. Web of Science CSD CrossRef CAS Google Scholar
Seo, H. J., Yoo, K., Song, M., Park, J. S., Jin, S., Kim, Y. I. & Kim, J. (2010). Org. Electron. 11, 564–572. Web of Science CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Soares-Santos, P. C. R., Paz, F. A. A., Sa Ferreira, R. A., Klinowski, J., Carlos, L. D., Trindade, T. & Norgueira, H. I. S. (2006). Polyhedron, 25, 2471–2482. Web of Science CSD CrossRef CAS Google Scholar
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.
Metal complexes of picolinic acid and their derivatives have been of considerable interest due to their adoption of various coordination modes and their interesting photophysical properties (Seo et al., 2010; Kukovec et al., 2009; Hong et al., 2008; Soares-Santos et al., 2006). Especially, Eu(III) complexes have been extensively studied due to their unique luminescence properties such as narrow emission bands and the excitation spectra of the five-dimensional0 — > 7F0 transition (Lis et al., 2009; Godlewska et al., 2008; Legendziewicz et al., 2002). In this study, we report the synthesis and characterization of a Eu(III)-picolinic acid derivative in order to develop new lanthanide complexes for novel photoluminescent applications.
In the title one-dimensional coordination polymer, {Na[Eu(C7H6NO2)4] 3H2O}n, the Eu atom is nine-coordinate within a slightly distorted tricapped trigonal prismatic coordination geometry. The Eu(III) atom is coordinated to the five carboxylate-O atoms and four pyridine-N atoms. The Eu—O bond distances are within the range of 2.362 (4) - 2.461 (4) Å, Table 1, which are significantly shorter than the sum of the covalent radii of Eu and O atoms (2.66 Å). The dihedral angles between the pyridine rings and the carboxylate groups are in the range of 5.0 (4) - 24.7 (4) °. One of the carboxylate ligands bridges Eu cations to form a one-dimensional coordination polymer along the crystallographic b axis (Fig. 2). Intramolecular O—H···O hydrogen bonds link the uncoordinated water molecules to the coordinated water molecules, Table 2. In the crystal structure, intermolecular O—H···O hydrogen bonds link the polymers into a three-dimensional network, Table 2. The title compound exhibits an intense emission at 618 nm upon 396 nm excitation in PL spectra with 325 nm of He—Cd laser excitation wavelength.