metal-organic compounds
Bis(μ-N-acetyl-N-phenylglycinato-κ2O:O′)bis[dinitrato-κ4O,O′-bis(1,10-phenanthroline-κ2N,N′)lanthanum(III)]
aDepartment of Chemistry, East Tennessee State University, Johnson City, Tennessee, USA
*Correspondence e-mail: dzgxn1986@hotmail.com
In the title complex, [La2(C10H10NO3)2(NO3)4(C12H8N2)4], each LaIII ion is ten-coordinated by four N atoms from two bidentate 1,10-phenanthroline ligands and by six O atoms, two from the N-acetyl-N-phenylglycinate ligands and four from two nitrate anions. Two LaIII cations, which exhibit a distorted bicapped square-antiprismatic coordination, are bridged by two N-acetyl-N-phenylglycinate ligands into a dimeric structure, generated by inversion symmetry. There is a π–π contact between the benzene rings [centroid–centroid distance = 3.409 (3) Å].
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1997); cell SAINT (Bruker, 1997); 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/S1600536808038075/hk2563sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808038075/hk2563Isup2.hkl
La(NO3)3.nH2O (1 mmol) and 1,10-phenanthroline (1 mmol) were dissolved in anhydrous ethanol (20 ml). To this solution, an aqueous mixture (10 ml) of N-acetyl-N-phenylglycinate (1 mmol) and NaOH (1 mmol) was added dropwise. The mixture was stirred for 2 h. The large yellow crystals were obtained after the solution had been allowed to stand at room temperature for three weeks.
H atoms were positioned geometrically, with C—H = 0.93, 0.97 and 0.96 Å for aromatic, methylene and methyl H, respectively, and constrained to ride on their parent atoms with Uiso(H) = xUeq(C), where x = 1.5 for methyl H and x = 1.2 for all other H atoms.
Data collection: SMART (Bruker, 1997); cell
SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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).Fig. 1. The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level [symmetry code: (i) 2 - x, 2 - y, 2 - z]. |
[La2(C10H10NO3)2(NO3)4(C12H8N2)4] | F(000) = 1632 |
Mr = 1631.06 | Dx = 1.670 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 6044 reflections |
a = 14.0891 (7) Å | θ = 2.3–27.5° |
b = 13.7610 (7) Å | µ = 1.39 mm−1 |
c = 16.9962 (9) Å | T = 296 K |
β = 100.121 (1)° | Needle, yellow |
V = 3243.9 (3) Å3 | 0.45 × 0.43 × 0.40 mm |
Z = 2 |
Bruker SMART CCD area-detector diffractometer | 5719 independent reflections |
Radiation source: fine-focus sealed tube | 4467 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.031 |
ϕ and ω scans | θmax = 25.0°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 1997) | h = −15→16 |
Tmin = 0.574, Tmax = 0.543 | k = −16→12 |
16038 measured reflections | l = −20→15 |
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)] = 0.025 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.059 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0228P)2 + 0.722P] where P = (Fo2 + 2Fc2)/3 |
5719 reflections | (Δ/σ)max = 0.002 |
461 parameters | Δρmax = 0.70 e Å−3 |
0 restraints | Δρmin = −0.42 e Å−3 |
[La2(C10H10NO3)2(NO3)4(C12H8N2)4] | V = 3243.9 (3) Å3 |
Mr = 1631.06 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 14.0891 (7) Å | µ = 1.39 mm−1 |
b = 13.7610 (7) Å | T = 296 K |
c = 16.9962 (9) Å | 0.45 × 0.43 × 0.40 mm |
β = 100.121 (1)° |
Bruker SMART CCD area-detector diffractometer | 5719 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1997) | 4467 reflections with I > 2σ(I) |
Tmin = 0.574, Tmax = 0.543 | Rint = 0.031 |
16038 measured reflections |
R[F2 > 2σ(F2)] = 0.025 | 0 restraints |
wR(F2) = 0.059 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.70 e Å−3 |
5719 reflections | Δρmin = −0.42 e Å−3 |
461 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 | ||
La1 | 0.845573 (12) | 0.870851 (12) | 0.945459 (10) | 0.02900 (6) | |
N1 | 1.13333 (19) | 0.8679 (2) | 0.79326 (15) | 0.0430 (7) | |
N2 | 0.90459 (18) | 0.70723 (18) | 0.87965 (14) | 0.0359 (6) | |
N3 | 0.99585 (18) | 0.77290 (18) | 1.02680 (15) | 0.0367 (6) | |
N4 | 0.66037 (18) | 0.79638 (19) | 0.89767 (15) | 0.0379 (6) | |
N5 | 0.68663 (18) | 0.98664 (18) | 0.94152 (15) | 0.0375 (6) | |
N6 | 0.80835 (19) | 0.9726 (2) | 0.78155 (17) | 0.0428 (7) | |
N7 | 0.8123 (2) | 0.7497 (2) | 1.08954 (18) | 0.0495 (8) | |
O1 | 0.99417 (15) | 0.90185 (15) | 0.88858 (12) | 0.0408 (5) | |
O2 | 1.09455 (15) | 0.99913 (16) | 0.96794 (12) | 0.0415 (5) | |
O3 | 1.20355 (19) | 0.77683 (19) | 0.89687 (15) | 0.0648 (7) | |
O4 | 0.78752 (16) | 0.88449 (16) | 0.79238 (13) | 0.0477 (6) | |
O5 | 0.83297 (17) | 1.02339 (17) | 0.84285 (14) | 0.0539 (6) | |
O6 | 0.80359 (19) | 1.00540 (19) | 0.71402 (15) | 0.0617 (7) | |
O7 | 0.80680 (17) | 0.70496 (17) | 1.02473 (14) | 0.0513 (6) | |
O8 | 0.8016 (2) | 0.83975 (18) | 1.08626 (14) | 0.0616 (7) | |
O9 | 0.8312 (2) | 0.7069 (2) | 1.15385 (16) | 0.0747 (8) | |
C1 | 1.0698 (2) | 0.9493 (2) | 0.90545 (18) | 0.0324 (7) | |
C2 | 1.1388 (2) | 0.9516 (2) | 0.84616 (19) | 0.0445 (8) | |
H2A | 1.1260 | 1.0097 | 0.8138 | 0.053* | |
H2B | 1.2041 | 0.9565 | 0.8757 | 0.053* | |
C3 | 1.1680 (3) | 0.7818 (3) | 0.8261 (2) | 0.0476 (9) | |
C4 | 1.1634 (3) | 0.6951 (3) | 0.7714 (2) | 0.0578 (10) | |
H4A | 1.2042 | 0.7060 | 0.7326 | 0.087* | |
H4B | 1.0981 | 0.6858 | 0.7445 | 0.087* | |
H4C | 1.1847 | 0.6382 | 0.8022 | 0.087* | |
C5 | 1.0850 (3) | 0.8778 (2) | 0.7122 (2) | 0.0453 (8) | |
C6 | 1.1368 (3) | 0.9001 (3) | 0.6535 (2) | 0.0712 (12) | |
H6 | 1.2029 | 0.9109 | 0.6664 | 0.085* | |
C7 | 1.0902 (4) | 0.9063 (4) | 0.5747 (3) | 0.0892 (16) | |
H7 | 1.1254 | 0.9197 | 0.5345 | 0.107* | |
C8 | 0.9928 (4) | 0.8930 (3) | 0.5559 (3) | 0.0789 (14) | |
H8 | 0.9618 | 0.8967 | 0.5030 | 0.095* | |
C9 | 0.9415 (3) | 0.8743 (3) | 0.6144 (3) | 0.0702 (12) | |
H9 | 0.8749 | 0.8671 | 0.6016 | 0.084* | |
C10 | 0.9867 (3) | 0.8656 (3) | 0.6927 (2) | 0.0560 (10) | |
H10 | 0.9510 | 0.8516 | 0.7324 | 0.067* | |
C11 | 0.8644 (2) | 0.6758 (2) | 0.80770 (19) | 0.0415 (8) | |
H11 | 0.8133 | 0.7113 | 0.7796 | 0.050* | |
C12 | 0.8938 (3) | 0.5933 (3) | 0.7716 (2) | 0.0478 (9) | |
H12 | 0.8634 | 0.5748 | 0.7208 | 0.057* | |
C13 | 0.9677 (3) | 0.5402 (3) | 0.8120 (2) | 0.0524 (10) | |
H13 | 0.9877 | 0.4840 | 0.7894 | 0.063* | |
C14 | 1.0140 (2) | 0.5703 (2) | 0.8879 (2) | 0.0427 (8) | |
C15 | 0.9805 (2) | 0.6557 (2) | 0.91969 (18) | 0.0345 (7) | |
C16 | 1.0281 (2) | 0.6891 (2) | 0.99698 (18) | 0.0346 (7) | |
C17 | 1.1050 (2) | 0.6354 (2) | 1.0390 (2) | 0.0451 (8) | |
C18 | 1.1482 (3) | 0.6695 (3) | 1.1146 (2) | 0.0540 (10) | |
H18 | 1.1990 | 0.6353 | 1.1446 | 0.065* | |
C19 | 1.1157 (3) | 0.7525 (3) | 1.1438 (2) | 0.0579 (10) | |
H19 | 1.1435 | 0.7754 | 1.1941 | 0.069* | |
C20 | 1.0401 (2) | 0.8028 (3) | 1.0977 (2) | 0.0481 (9) | |
H20 | 1.0197 | 0.8606 | 1.1178 | 0.058* | |
C21 | 1.0924 (3) | 0.5175 (3) | 0.9327 (2) | 0.0571 (10) | |
H21 | 1.1138 | 0.4610 | 0.9114 | 0.069* | |
C22 | 1.1358 (3) | 0.5483 (3) | 1.0052 (2) | 0.0554 (10) | |
H22 | 1.1864 | 0.5124 | 1.0337 | 0.067* | |
C23 | 0.6453 (2) | 0.7039 (2) | 0.87754 (19) | 0.0437 (8) | |
H23 | 0.6978 | 0.6619 | 0.8860 | 0.052* | |
C24 | 0.5551 (3) | 0.6658 (3) | 0.8443 (2) | 0.0543 (10) | |
H24 | 0.5481 | 0.6002 | 0.8314 | 0.065* | |
C25 | 0.4776 (3) | 0.7264 (3) | 0.8312 (2) | 0.0547 (10) | |
H25 | 0.4173 | 0.7027 | 0.8081 | 0.066* | |
C26 | 0.4886 (2) | 0.8241 (3) | 0.85246 (19) | 0.0434 (8) | |
C27 | 0.5820 (2) | 0.8562 (2) | 0.88643 (17) | 0.0351 (7) | |
C28 | 0.5960 (2) | 0.9564 (2) | 0.91083 (17) | 0.0355 (7) | |
C29 | 0.5157 (2) | 1.0197 (2) | 0.90190 (18) | 0.0410 (8) | |
C30 | 0.5319 (3) | 1.1161 (3) | 0.9279 (2) | 0.0493 (9) | |
H30 | 0.4809 | 1.1597 | 0.9235 | 0.059* | |
C31 | 0.6228 (3) | 1.1449 (3) | 0.9596 (2) | 0.0520 (10) | |
H31 | 0.6343 | 1.2080 | 0.9784 | 0.062* | |
C32 | 0.6986 (3) | 1.0792 (2) | 0.96363 (19) | 0.0465 (9) | |
H32 | 0.7608 | 1.1011 | 0.9828 | 0.056* | |
C33 | 0.4103 (2) | 0.8913 (3) | 0.8426 (2) | 0.0529 (10) | |
H33 | 0.3492 | 0.8703 | 0.8190 | 0.063* | |
C34 | 0.4227 (2) | 0.9842 (3) | 0.8666 (2) | 0.0512 (9) | |
H34 | 0.3700 | 1.0260 | 0.8602 | 0.061* |
U11 | U22 | U33 | U12 | U13 | U23 | |
La1 | 0.02833 (10) | 0.02659 (10) | 0.03019 (10) | 0.00055 (9) | −0.00011 (7) | −0.00327 (8) |
N1 | 0.0487 (17) | 0.0416 (16) | 0.0405 (16) | −0.0021 (14) | 0.0130 (13) | −0.0099 (14) |
N2 | 0.0389 (15) | 0.0313 (14) | 0.0356 (15) | −0.0021 (12) | 0.0007 (12) | −0.0046 (12) |
N3 | 0.0357 (15) | 0.0316 (14) | 0.0403 (16) | 0.0000 (12) | −0.0008 (12) | −0.0019 (12) |
N4 | 0.0377 (16) | 0.0355 (15) | 0.0399 (16) | −0.0008 (13) | 0.0050 (12) | 0.0019 (12) |
N5 | 0.0376 (16) | 0.0340 (15) | 0.0389 (16) | 0.0039 (12) | 0.0010 (12) | 0.0000 (12) |
N6 | 0.0374 (16) | 0.0448 (18) | 0.0440 (18) | 0.0005 (14) | 0.0011 (13) | 0.0050 (15) |
N7 | 0.0520 (19) | 0.052 (2) | 0.045 (2) | −0.0089 (16) | 0.0103 (15) | 0.0023 (16) |
O1 | 0.0377 (13) | 0.0455 (13) | 0.0386 (13) | −0.0086 (11) | 0.0051 (10) | −0.0102 (10) |
O2 | 0.0406 (13) | 0.0418 (13) | 0.0416 (13) | −0.0028 (11) | 0.0061 (10) | −0.0147 (11) |
O3 | 0.0758 (19) | 0.0630 (18) | 0.0515 (17) | −0.0085 (15) | −0.0001 (14) | −0.0028 (14) |
O4 | 0.0558 (15) | 0.0388 (13) | 0.0436 (14) | −0.0127 (12) | −0.0044 (11) | 0.0069 (11) |
O5 | 0.0643 (17) | 0.0401 (14) | 0.0546 (16) | −0.0048 (12) | 0.0028 (13) | −0.0074 (12) |
O6 | 0.0721 (18) | 0.0614 (17) | 0.0509 (16) | 0.0021 (14) | 0.0088 (13) | 0.0221 (14) |
O7 | 0.0567 (16) | 0.0445 (14) | 0.0503 (15) | −0.0004 (12) | 0.0025 (12) | −0.0050 (12) |
O8 | 0.094 (2) | 0.0383 (15) | 0.0581 (17) | 0.0041 (14) | 0.0289 (14) | 0.0002 (12) |
O9 | 0.096 (2) | 0.077 (2) | 0.0511 (17) | −0.0066 (17) | 0.0107 (15) | 0.0189 (15) |
C1 | 0.0351 (18) | 0.0268 (16) | 0.0341 (18) | 0.0027 (14) | 0.0024 (14) | −0.0043 (14) |
C2 | 0.049 (2) | 0.041 (2) | 0.046 (2) | −0.0068 (17) | 0.0148 (16) | −0.0127 (16) |
C3 | 0.045 (2) | 0.050 (2) | 0.052 (2) | −0.0102 (18) | 0.0189 (18) | −0.0066 (19) |
C4 | 0.074 (3) | 0.042 (2) | 0.060 (2) | −0.006 (2) | 0.020 (2) | −0.0070 (19) |
C5 | 0.054 (2) | 0.0401 (19) | 0.045 (2) | 0.0013 (18) | 0.0157 (17) | −0.0090 (17) |
C6 | 0.065 (3) | 0.093 (3) | 0.060 (3) | 0.005 (2) | 0.025 (2) | 0.008 (2) |
C7 | 0.111 (4) | 0.106 (4) | 0.057 (3) | 0.022 (3) | 0.033 (3) | 0.019 (3) |
C8 | 0.110 (4) | 0.071 (3) | 0.051 (3) | 0.022 (3) | 0.002 (3) | −0.003 (2) |
C9 | 0.074 (3) | 0.064 (3) | 0.066 (3) | 0.005 (2) | −0.005 (2) | −0.017 (2) |
C10 | 0.062 (3) | 0.053 (2) | 0.053 (2) | −0.006 (2) | 0.0125 (19) | −0.0110 (19) |
C11 | 0.042 (2) | 0.043 (2) | 0.038 (2) | −0.0083 (16) | 0.0018 (15) | −0.0070 (16) |
C12 | 0.057 (2) | 0.046 (2) | 0.043 (2) | −0.0117 (18) | 0.0143 (18) | −0.0166 (17) |
C13 | 0.071 (3) | 0.035 (2) | 0.059 (2) | −0.0058 (19) | 0.033 (2) | −0.0110 (18) |
C14 | 0.051 (2) | 0.0297 (18) | 0.051 (2) | 0.0005 (16) | 0.0187 (17) | 0.0004 (16) |
C15 | 0.0376 (18) | 0.0296 (17) | 0.0377 (18) | −0.0029 (14) | 0.0105 (14) | 0.0017 (14) |
C16 | 0.0351 (18) | 0.0300 (17) | 0.0390 (19) | −0.0004 (14) | 0.0072 (14) | 0.0041 (14) |
C17 | 0.0396 (19) | 0.043 (2) | 0.053 (2) | 0.0018 (17) | 0.0096 (16) | 0.0114 (18) |
C18 | 0.045 (2) | 0.055 (2) | 0.057 (2) | 0.0069 (19) | −0.0048 (18) | 0.016 (2) |
C19 | 0.056 (2) | 0.063 (3) | 0.047 (2) | 0.002 (2) | −0.0134 (19) | 0.0025 (19) |
C20 | 0.050 (2) | 0.044 (2) | 0.044 (2) | 0.0024 (17) | −0.0078 (17) | −0.0058 (17) |
C21 | 0.070 (3) | 0.035 (2) | 0.072 (3) | 0.0145 (19) | 0.029 (2) | 0.0054 (19) |
C22 | 0.055 (2) | 0.044 (2) | 0.069 (3) | 0.0198 (19) | 0.015 (2) | 0.017 (2) |
C23 | 0.041 (2) | 0.0371 (19) | 0.053 (2) | −0.0028 (16) | 0.0078 (16) | −0.0018 (17) |
C24 | 0.055 (2) | 0.044 (2) | 0.063 (3) | −0.0121 (19) | 0.0084 (19) | −0.0058 (19) |
C25 | 0.042 (2) | 0.059 (2) | 0.060 (2) | −0.0133 (19) | 0.0020 (18) | −0.002 (2) |
C26 | 0.0361 (19) | 0.050 (2) | 0.044 (2) | −0.0025 (17) | 0.0047 (15) | 0.0067 (17) |
C27 | 0.0309 (17) | 0.0405 (19) | 0.0336 (17) | 0.0022 (15) | 0.0051 (13) | 0.0067 (14) |
C28 | 0.0360 (18) | 0.0400 (19) | 0.0304 (17) | 0.0019 (15) | 0.0052 (14) | 0.0054 (14) |
C29 | 0.040 (2) | 0.047 (2) | 0.0370 (19) | 0.0089 (17) | 0.0114 (15) | 0.0121 (16) |
C30 | 0.053 (2) | 0.049 (2) | 0.046 (2) | 0.0220 (19) | 0.0081 (17) | 0.0064 (18) |
C31 | 0.067 (3) | 0.040 (2) | 0.045 (2) | 0.0146 (19) | −0.0013 (18) | −0.0008 (16) |
C32 | 0.050 (2) | 0.041 (2) | 0.044 (2) | 0.0034 (17) | −0.0029 (17) | −0.0035 (17) |
C33 | 0.0310 (19) | 0.066 (3) | 0.061 (2) | −0.0021 (18) | 0.0061 (16) | 0.011 (2) |
C34 | 0.035 (2) | 0.061 (3) | 0.058 (2) | 0.0111 (19) | 0.0106 (17) | 0.019 (2) |
La1—O2i | 2.376 (2) | C8—H8 | 0.9300 |
La1—O1 | 2.492 (2) | C9—C10 | 1.376 (5) |
La1—O4 | 2.593 (2) | C9—H9 | 0.9300 |
La1—O8 | 2.610 (2) | C10—H10 | 0.9300 |
La1—N3 | 2.680 (2) | C11—C12 | 1.387 (5) |
La1—N2 | 2.709 (2) | C11—H11 | 0.9300 |
La1—O5 | 2.715 (2) | C12—C13 | 1.356 (5) |
La1—N5 | 2.740 (2) | C12—H12 | 0.9300 |
La1—O7 | 2.754 (2) | C13—C14 | 1.402 (5) |
La1—N4 | 2.788 (3) | C13—H13 | 0.9300 |
N1—C3 | 1.363 (4) | C14—C15 | 1.408 (4) |
N1—C5 | 1.433 (4) | C14—C21 | 1.425 (5) |
N1—C2 | 1.455 (4) | C15—C16 | 1.441 (4) |
N2—C11 | 1.327 (4) | C16—C17 | 1.400 (4) |
N2—C15 | 1.362 (4) | C17—C18 | 1.403 (5) |
N3—C20 | 1.321 (4) | C17—C22 | 1.429 (5) |
N3—C16 | 1.369 (4) | C18—C19 | 1.357 (5) |
N4—C23 | 1.325 (4) | C18—H18 | 0.9300 |
N4—C27 | 1.364 (4) | C19—C20 | 1.391 (5) |
N5—C32 | 1.330 (4) | C19—H19 | 0.9300 |
N5—C28 | 1.357 (4) | C20—H20 | 0.9300 |
N6—O6 | 1.224 (3) | C21—C22 | 1.345 (5) |
N6—O5 | 1.252 (3) | C21—H21 | 0.9300 |
N6—O4 | 1.268 (3) | C22—H22 | 0.9300 |
N7—O9 | 1.229 (3) | C23—C24 | 1.400 (4) |
N7—O8 | 1.248 (4) | C23—H23 | 0.9300 |
N7—O7 | 1.253 (3) | C24—C25 | 1.361 (5) |
O1—C1 | 1.239 (3) | C24—H24 | 0.9300 |
O2—C1 | 1.261 (3) | C25—C26 | 1.393 (5) |
O2—La1i | 2.376 (2) | C25—H25 | 0.9300 |
O3—C3 | 1.221 (4) | C26—C27 | 1.411 (4) |
C1—C2 | 1.518 (4) | C26—C33 | 1.427 (5) |
C2—H2A | 0.9700 | C27—C28 | 1.444 (4) |
C2—H2B | 0.9700 | C28—C29 | 1.414 (4) |
C3—C4 | 1.507 (5) | C29—C30 | 1.403 (5) |
C4—H4A | 0.9600 | C29—C34 | 1.428 (5) |
C4—H4B | 0.9600 | C30—C31 | 1.358 (5) |
C4—H4C | 0.9600 | C30—H30 | 0.9300 |
C5—C6 | 1.370 (5) | C31—C32 | 1.392 (5) |
C5—C10 | 1.376 (5) | C31—H31 | 0.9300 |
C6—C7 | 1.387 (6) | C32—H32 | 0.9300 |
C6—H6 | 0.9300 | C33—C34 | 1.344 (5) |
C7—C8 | 1.365 (6) | C33—H33 | 0.9300 |
C7—H7 | 0.9300 | C34—H34 | 0.9300 |
C8—C9 | 1.353 (6) | ||
O2i—La1—O1 | 83.13 (7) | C6—C5—C10 | 119.7 (4) |
O2i—La1—O4 | 125.60 (7) | C6—C5—N1 | 119.8 (3) |
O1—La1—O4 | 74.74 (7) | C10—C5—N1 | 120.5 (3) |
O2i—La1—O8 | 70.80 (8) | C5—C6—C7 | 119.6 (4) |
O1—La1—O8 | 137.26 (8) | C5—C6—H6 | 120.2 |
O4—La1—O8 | 147.97 (8) | C7—C6—H6 | 120.2 |
O2i—La1—N3 | 84.08 (7) | C8—C7—C6 | 120.2 (4) |
O1—La1—N3 | 69.20 (7) | C8—C7—H7 | 119.9 |
O4—La1—N3 | 129.44 (8) | C6—C7—H7 | 119.9 |
O8—La1—N3 | 74.80 (8) | C9—C8—C7 | 119.9 (4) |
O2i—La1—N2 | 141.31 (7) | C9—C8—H8 | 120.0 |
O1—La1—N2 | 69.05 (7) | C7—C8—H8 | 120.0 |
O4—La1—N2 | 73.23 (7) | C8—C9—C10 | 120.7 (4) |
O8—La1—N2 | 112.44 (8) | C8—C9—H9 | 119.6 |
N3—La1—N2 | 61.51 (7) | C10—C9—H9 | 119.6 |
O2i—La1—O5 | 77.98 (7) | C5—C10—C9 | 119.8 (4) |
O1—La1—O5 | 65.36 (7) | C5—C10—H10 | 120.1 |
O4—La1—O5 | 47.63 (7) | C9—C10—H10 | 120.1 |
O8—La1—O5 | 135.76 (8) | N2—C11—C12 | 124.2 (3) |
N3—La1—O5 | 132.60 (8) | N2—C11—H11 | 117.9 |
N2—La1—O5 | 111.57 (7) | C12—C11—H11 | 117.9 |
O2i—La1—N5 | 77.10 (7) | C13—C12—C11 | 118.6 (3) |
O1—La1—N5 | 129.03 (7) | C13—C12—H12 | 120.7 |
O4—La1—N5 | 79.69 (7) | C11—C12—H12 | 120.7 |
O8—La1—N5 | 78.07 (8) | C12—C13—C14 | 119.9 (3) |
N3—La1—N5 | 150.86 (8) | C12—C13—H13 | 120.1 |
N2—La1—N5 | 141.46 (7) | C14—C13—H13 | 120.1 |
O5—La1—N5 | 64.76 (7) | C13—C14—C15 | 117.8 (3) |
O2i—La1—O7 | 113.62 (7) | C13—C14—C21 | 122.1 (3) |
O1—La1—O7 | 125.74 (7) | C15—C14—C21 | 120.1 (3) |
O4—La1—O7 | 119.74 (7) | N2—C15—C14 | 122.0 (3) |
O8—La1—O7 | 46.86 (7) | N2—C15—C16 | 119.2 (3) |
N3—La1—O7 | 62.44 (7) | C14—C15—C16 | 118.8 (3) |
N2—La1—O7 | 67.34 (7) | N3—C16—C17 | 122.2 (3) |
O5—La1—O7 | 163.54 (7) | N3—C16—C15 | 118.4 (3) |
N5—La1—O7 | 105.22 (7) | C17—C16—C15 | 119.4 (3) |
O2i—La1—N4 | 132.04 (7) | C16—C17—C18 | 117.6 (3) |
O1—La1—N4 | 139.19 (7) | C16—C17—C22 | 120.0 (3) |
O4—La1—N4 | 67.69 (7) | C18—C17—C22 | 122.3 (3) |
O8—La1—N4 | 81.15 (8) | C19—C18—C17 | 119.8 (3) |
N3—La1—N4 | 125.42 (8) | C19—C18—H18 | 120.1 |
N2—La1—N4 | 85.05 (8) | C17—C18—H18 | 120.1 |
O5—La1—N4 | 98.33 (7) | C18—C19—C20 | 119.2 (3) |
N5—La1—N4 | 59.17 (8) | C18—C19—H19 | 120.4 |
O7—La1—N4 | 65.28 (7) | C20—C19—H19 | 120.4 |
C3—N1—C5 | 123.5 (3) | N3—C20—C19 | 123.4 (3) |
C3—N1—C2 | 117.3 (3) | N3—C20—H20 | 118.3 |
C5—N1—C2 | 119.0 (3) | C19—C20—H20 | 118.3 |
C11—N2—C15 | 117.4 (3) | C22—C21—C14 | 120.9 (3) |
C11—N2—La1 | 122.7 (2) | C22—C21—H21 | 119.6 |
C15—N2—La1 | 119.86 (18) | C14—C21—H21 | 119.6 |
C20—N3—C16 | 117.8 (3) | C21—C22—C17 | 120.7 (3) |
C20—N3—La1 | 121.1 (2) | C21—C22—H22 | 119.6 |
C16—N3—La1 | 121.06 (19) | C17—C22—H22 | 119.6 |
C23—N4—C27 | 117.0 (3) | N4—C23—C24 | 123.8 (3) |
C23—N4—La1 | 121.8 (2) | N4—C23—H23 | 118.1 |
C27—N4—La1 | 120.83 (19) | C24—C23—H23 | 118.1 |
C32—N5—C28 | 117.8 (3) | C25—C24—C23 | 118.8 (3) |
C32—N5—La1 | 119.2 (2) | C25—C24—H24 | 120.6 |
C28—N5—La1 | 122.8 (2) | C23—C24—H24 | 120.6 |
O6—N6—O5 | 122.4 (3) | C24—C25—C26 | 120.0 (3) |
O6—N6—O4 | 120.8 (3) | C24—C25—H25 | 120.0 |
O5—N6—O4 | 116.8 (3) | C26—C25—H25 | 120.0 |
O9—N7—O8 | 121.4 (3) | C25—C26—C27 | 117.5 (3) |
O9—N7—O7 | 121.1 (3) | C25—C26—C33 | 123.1 (3) |
O8—N7—O7 | 117.4 (3) | C27—C26—C33 | 119.4 (3) |
C1—O1—La1 | 138.33 (19) | N4—C27—C26 | 122.8 (3) |
C1—O2—La1i | 161.3 (2) | N4—C27—C28 | 118.0 (3) |
N6—O4—La1 | 100.05 (18) | C26—C27—C28 | 119.2 (3) |
N6—O5—La1 | 94.59 (18) | N5—C28—C29 | 122.2 (3) |
N7—O7—La1 | 92.03 (18) | N5—C28—C27 | 118.4 (3) |
N7—O8—La1 | 99.1 (2) | C29—C28—C27 | 119.4 (3) |
O1—C1—O2 | 125.5 (3) | C30—C29—C28 | 117.7 (3) |
O1—C1—C2 | 118.8 (3) | C30—C29—C34 | 122.8 (3) |
O2—C1—C2 | 115.7 (3) | C28—C29—C34 | 119.5 (3) |
N1—C2—C1 | 115.0 (3) | C31—C30—C29 | 119.4 (3) |
N1—C2—H2A | 108.5 | C31—C30—H30 | 120.3 |
C1—C2—H2A | 108.5 | C29—C30—H30 | 120.3 |
N1—C2—H2B | 108.5 | C30—C31—C32 | 119.4 (3) |
C1—C2—H2B | 108.5 | C30—C31—H31 | 120.3 |
H2A—C2—H2B | 107.5 | C32—C31—H31 | 120.3 |
O3—C3—N1 | 120.5 (3) | N5—C32—C31 | 123.4 (3) |
O3—C3—C4 | 121.9 (4) | N5—C32—H32 | 118.3 |
N1—C3—C4 | 117.5 (3) | C31—C32—H32 | 118.3 |
C3—C4—H4A | 109.5 | C34—C33—C26 | 121.7 (3) |
C3—C4—H4B | 109.5 | C34—C33—H33 | 119.2 |
H4A—C4—H4B | 109.5 | C26—C33—H33 | 119.2 |
C3—C4—H4C | 109.5 | C33—C34—C29 | 120.9 (3) |
H4A—C4—H4C | 109.5 | C33—C34—H34 | 119.6 |
H4B—C4—H4C | 109.5 | C29—C34—H34 | 119.6 |
O2i—La1—N2—C11 | −147.4 (2) | N5—La1—O7—N7 | −68.74 (19) |
O1—La1—N2—C11 | −100.4 (2) | N4—La1—O7—N7 | −113.51 (19) |
O4—La1—N2—C11 | −20.7 (2) | O9—N7—O8—La1 | 154.8 (3) |
O8—La1—N2—C11 | 125.7 (2) | O7—N7—O8—La1 | −22.5 (3) |
N3—La1—N2—C11 | −177.4 (3) | O2i—La1—O8—N7 | −143.0 (2) |
O5—La1—N2—C11 | −49.6 (2) | O1—La1—O8—N7 | −87.3 (2) |
N5—La1—N2—C11 | 26.6 (3) | O4—La1—O8—N7 | 89.7 (2) |
O7—La1—N2—C11 | 112.7 (2) | N3—La1—O8—N7 | −54.1 (2) |
N4—La1—N2—C11 | 47.4 (2) | N2—La1—O8—N7 | −4.4 (2) |
O2i—La1—N2—C15 | 30.4 (3) | O5—La1—O8—N7 | 169.36 (18) |
O1—La1—N2—C15 | 77.3 (2) | N5—La1—O8—N7 | 136.7 (2) |
O4—La1—N2—C15 | 157.0 (2) | O7—La1—O8—N7 | 12.21 (18) |
O8—La1—N2—C15 | −56.6 (2) | N4—La1—O8—N7 | 76.5 (2) |
N3—La1—N2—C15 | 0.3 (2) | La1—O1—C1—O2 | 3.0 (5) |
O5—La1—N2—C15 | 128.1 (2) | La1—O1—C1—C2 | −175.1 (2) |
N5—La1—N2—C15 | −155.73 (19) | La1i—O2—C1—O1 | −135.8 (5) |
O7—La1—N2—C15 | −69.6 (2) | La1i—O2—C1—C2 | 42.3 (7) |
N4—La1—N2—C15 | −134.9 (2) | C3—N1—C2—C1 | −71.2 (4) |
O2i—La1—N3—C20 | 18.8 (2) | C5—N1—C2—C1 | 103.4 (3) |
O1—La1—N3—C20 | 103.7 (3) | O1—C1—C2—N1 | −26.0 (4) |
O4—La1—N3—C20 | 151.1 (2) | O2—C1—C2—N1 | 155.8 (3) |
O8—La1—N3—C20 | −52.8 (2) | C5—N1—C3—O3 | −175.7 (3) |
N2—La1—N3—C20 | −179.5 (3) | C2—N1—C3—O3 | −1.3 (5) |
O5—La1—N3—C20 | 86.5 (3) | C5—N1—C3—C4 | 6.1 (5) |
N5—La1—N3—C20 | −30.9 (3) | C2—N1—C3—C4 | −179.5 (3) |
O7—La1—N3—C20 | −101.7 (3) | C3—N1—C5—C6 | −91.5 (4) |
N4—La1—N3—C20 | −119.9 (2) | C2—N1—C5—C6 | 94.2 (4) |
O2i—La1—N3—C16 | −162.5 (2) | C3—N1—C5—C10 | 88.9 (4) |
O1—La1—N3—C16 | −77.6 (2) | C2—N1—C5—C10 | −85.5 (4) |
O4—La1—N3—C16 | −30.2 (3) | C10—C5—C6—C7 | −2.5 (6) |
O8—La1—N3—C16 | 125.8 (2) | N1—C5—C6—C7 | 177.8 (4) |
N2—La1—N3—C16 | −0.8 (2) | C5—C6—C7—C8 | 1.8 (7) |
O5—La1—N3—C16 | −94.8 (2) | C6—C7—C8—C9 | 0.5 (7) |
N5—La1—N3—C16 | 147.8 (2) | C7—C8—C9—C10 | −1.9 (7) |
O7—La1—N3—C16 | 77.0 (2) | C6—C5—C10—C9 | 1.1 (6) |
N4—La1—N3—C16 | 58.7 (2) | N1—C5—C10—C9 | −179.3 (3) |
O2i—La1—N4—C23 | −151.3 (2) | C8—C9—C10—C5 | 1.1 (6) |
O1—La1—N4—C23 | 65.8 (3) | C15—N2—C11—C12 | 1.1 (5) |
O4—La1—N4—C23 | 90.2 (2) | La1—N2—C11—C12 | 178.9 (2) |
O8—La1—N4—C23 | −97.3 (2) | N2—C11—C12—C13 | 0.5 (5) |
N3—La1—N4—C23 | −33.2 (3) | C11—C12—C13—C14 | −1.3 (5) |
N2—La1—N4—C23 | 16.3 (2) | C12—C13—C14—C15 | 0.4 (5) |
O5—La1—N4—C23 | 127.4 (2) | C12—C13—C14—C21 | −179.6 (3) |
N5—La1—N4—C23 | −178.7 (3) | C11—N2—C15—C14 | −2.0 (4) |
O7—La1—N4—C23 | −51.0 (2) | La1—N2—C15—C14 | −179.9 (2) |
O2i—La1—N4—C27 | 35.3 (3) | C11—N2—C15—C16 | 178.1 (3) |
O1—La1—N4—C27 | −107.6 (2) | La1—N2—C15—C16 | 0.2 (4) |
O4—La1—N4—C27 | −83.2 (2) | C13—C14—C15—N2 | 1.3 (5) |
O8—La1—N4—C27 | 89.3 (2) | C21—C14—C15—N2 | −178.7 (3) |
N3—La1—N4—C27 | 153.4 (2) | C13—C14—C15—C16 | −178.8 (3) |
N2—La1—N4—C27 | −157.1 (2) | C21—C14—C15—C16 | 1.2 (5) |
O5—La1—N4—C27 | −45.9 (2) | C20—N3—C16—C17 | 0.1 (5) |
N5—La1—N4—C27 | 8.0 (2) | La1—N3—C16—C17 | −178.6 (2) |
O7—La1—N4—C27 | 135.6 (2) | C20—N3—C16—C15 | −179.9 (3) |
O2i—La1—N5—C32 | 19.8 (2) | La1—N3—C16—C15 | 1.3 (4) |
O1—La1—N5—C32 | −50.2 (3) | N2—C15—C16—N3 | −1.0 (4) |
O4—La1—N5—C32 | −110.7 (2) | C14—C15—C16—N3 | 179.1 (3) |
O8—La1—N5—C32 | 92.5 (2) | N2—C15—C16—C17 | 178.9 (3) |
N3—La1—N5—C32 | 70.9 (3) | C14—C15—C16—C17 | −1.0 (4) |
N2—La1—N5—C32 | −156.3 (2) | N3—C16—C17—C18 | 1.1 (5) |
O5—La1—N5—C32 | −62.9 (2) | C15—C16—C17—C18 | −178.8 (3) |
O7—La1—N5—C32 | 131.1 (2) | N3—C16—C17—C22 | 179.9 (3) |
N4—La1—N5—C32 | 179.2 (3) | C15—C16—C17—C22 | 0.0 (5) |
O2i—La1—N5—C28 | −166.6 (2) | C16—C17—C18—C19 | −0.9 (5) |
O1—La1—N5—C28 | 123.5 (2) | C22—C17—C18—C19 | −179.7 (4) |
O4—La1—N5—C28 | 62.9 (2) | C17—C18—C19—C20 | −0.5 (6) |
O8—La1—N5—C28 | −93.9 (2) | C16—N3—C20—C19 | −1.6 (5) |
N3—La1—N5—C28 | −115.5 (2) | La1—N3—C20—C19 | 177.1 (3) |
N2—La1—N5—C28 | 17.3 (3) | C18—C19—C20—N3 | 1.8 (6) |
O5—La1—N5—C28 | 110.8 (2) | C13—C14—C21—C22 | 179.7 (3) |
O7—La1—N5—C28 | −55.3 (2) | C15—C14—C21—C22 | −0.4 (5) |
N4—La1—N5—C28 | −7.1 (2) | C14—C21—C22—C17 | −0.7 (6) |
O2i—La1—O1—C1 | 11.0 (3) | C16—C17—C22—C21 | 0.9 (5) |
O4—La1—O1—C1 | 140.9 (3) | C18—C17—C22—C21 | 179.7 (3) |
O8—La1—O1—C1 | −40.8 (3) | C27—N4—C23—C24 | 1.5 (5) |
N3—La1—O1—C1 | −75.2 (3) | La1—N4—C23—C24 | −172.2 (3) |
N2—La1—O1—C1 | −141.6 (3) | N4—C23—C24—C25 | 0.3 (5) |
O5—La1—O1—C1 | 90.9 (3) | C23—C24—C25—C26 | −1.4 (5) |
N5—La1—O1—C1 | 78.2 (3) | C24—C25—C26—C27 | 0.7 (5) |
O7—La1—O1—C1 | −103.2 (3) | C24—C25—C26—C33 | −178.2 (3) |
N4—La1—O1—C1 | 164.2 (3) | C23—N4—C27—C26 | −2.2 (4) |
O6—N6—O4—La1 | 170.4 (2) | La1—N4—C27—C26 | 171.5 (2) |
O5—N6—O4—La1 | −10.1 (3) | C23—N4—C27—C28 | 177.6 (3) |
O2i—La1—O4—N6 | 4.9 (2) | La1—N4—C27—C28 | −8.7 (4) |
O1—La1—O4—N6 | −64.73 (18) | C25—C26—C27—N4 | 1.1 (5) |
O8—La1—O4—N6 | 117.36 (19) | C33—C26—C27—N4 | −179.9 (3) |
N3—La1—O4—N6 | −110.21 (18) | C25—C26—C27—C28 | −178.7 (3) |
N2—La1—O4—N6 | −136.97 (19) | C33—C26—C27—C28 | 0.3 (5) |
O5—La1—O4—N6 | 5.63 (16) | C32—N5—C28—C29 | 0.1 (4) |
N5—La1—O4—N6 | 70.76 (18) | La1—N5—C28—C29 | −173.6 (2) |
O7—La1—O4—N6 | 172.49 (17) | C32—N5—C28—C27 | 179.9 (3) |
N4—La1—O4—N6 | 131.5 (2) | La1—N5—C28—C27 | 6.2 (4) |
O6—N6—O5—La1 | −170.9 (3) | N4—C27—C28—N5 | 1.8 (4) |
O4—N6—O5—La1 | 9.6 (3) | C26—C27—C28—N5 | −178.4 (3) |
O2i—La1—O5—N6 | 173.77 (19) | N4—C27—C28—C29 | −178.4 (3) |
O1—La1—O5—N6 | 85.88 (18) | C26—C27—C28—C29 | 1.5 (4) |
O4—La1—O5—N6 | −5.63 (16) | N5—C28—C29—C30 | −1.6 (5) |
O8—La1—O5—N6 | −140.71 (17) | C27—C28—C29—C30 | 178.6 (3) |
N3—La1—O5—N6 | 103.60 (18) | N5—C28—C29—C34 | 177.9 (3) |
N2—La1—O5—N6 | 33.07 (19) | C27—C28—C29—C34 | −2.0 (4) |
N5—La1—O5—N6 | −104.96 (19) | C28—C29—C30—C31 | 0.6 (5) |
O7—La1—O5—N6 | −49.8 (3) | C34—C29—C30—C31 | −178.8 (3) |
N4—La1—O5—N6 | −54.87 (18) | C29—C30—C31—C32 | 1.7 (5) |
O9—N7—O7—La1 | −156.3 (3) | C28—N5—C32—C31 | 2.5 (5) |
O8—N7—O7—La1 | 21.0 (3) | La1—N5—C32—C31 | 176.4 (3) |
O2i—La1—O7—N7 | 13.6 (2) | C30—C31—C32—N5 | −3.4 (5) |
O1—La1—O7—N7 | 112.44 (18) | C25—C26—C33—C34 | 177.3 (4) |
O4—La1—O7—N7 | −155.40 (17) | C27—C26—C33—C34 | −1.6 (5) |
O8—La1—O7—N7 | −12.01 (18) | C26—C33—C34—C29 | 1.1 (5) |
N3—La1—O7—N7 | 82.79 (19) | C30—C29—C34—C33 | −179.9 (3) |
N2—La1—O7—N7 | 151.4 (2) | C28—C29—C34—C33 | 0.7 (5) |
O5—La1—O7—N7 | −119.1 (3) |
Symmetry code: (i) −x+2, −y+2, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [La2(C10H10NO3)2(NO3)4(C12H8N2)4] |
Mr | 1631.06 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 296 |
a, b, c (Å) | 14.0891 (7), 13.7610 (7), 16.9962 (9) |
β (°) | 100.121 (1) |
V (Å3) | 3243.9 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.39 |
Crystal size (mm) | 0.45 × 0.43 × 0.40 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 1997) |
Tmin, Tmax | 0.574, 0.543 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16038, 5719, 4467 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.025, 0.059, 1.06 |
No. of reflections | 5719 |
No. of parameters | 461 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.70, −0.42 |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Acknowledgements
The author is grateful for financial support from the National Natural Science Foundation of China (grant No. 20771021) and Shandong Natural Science Foundation (grant No. Y2005B20).
References
Bruker (1997). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Fu, A.-Y., Wang, D.-Q. & Shen, Q.-J. (2004a). Acta Cryst. E60, m1346–m1348. Web of Science CrossRef IUCr Journals Google Scholar
Fu, A.-Y., Wang, D.-Q., Shen, Q.-J. & Zhang, C.-L. (2004b). Acta Cryst. E60, m1337–m1339. Web of Science CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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N-acetyl-N-phenylglycinate should be a very useful multidentate ligand and may act as bridge ligand due to coordination of its acetyl O and carboxylate O atoms. A few multinuclear complexes have been synthesized with monodeprotonated N-acetyl-N-phenylglycinate as bridge ligand (Fu et al. 2004a,b). We were interested in synthesizing multinuclear complexes with they as bridge ligands, and obtained the title dinuclear complex. We reported herein its crystal structure.
The coordination structure of the title complex is shown in Fig. 1. In the dinuclear complex, each LaIII ion is ten-coordinated by atoms N2, N3, N4 and N5 from two 1,10-phenanthroline (L2) ligands, atoms O4, O5, O7 and O8 from two nitrate anions (L3), atoms O1, O2i [symmetry code: (i) 2 - x, 2 - y, 2 - z] from carboxylate groups of two N-acetyl-N-phenylglycinate (L1) ligands. The coordination sphere around La is a distorted bicapped square-antiprism, with the capping positions occupied by atoms O5 of nitrate anion and O7 of another nitrate anion. The coordinated L1 ligand bonds to two La via two O atoms of carboxylate group, thus acting as a bridge. The overall complex has inversion symmetry. The π–π contact between the benzene rings, Cg1···Cg1ii [symmetry code: (ii) x - 1, y, z - 1, where Cg1 is the centroid of the ring (C14–C17/C21/C22)] may stabilize the structure, with centroid–centroid distance of 3.409 (3) Å.