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Each Eu3+ ion in the title compound, catena-poly­[europium(III)-tri-[mu]-4-methyl­benzoato-O:O,O';O:O,O';O,O':O'], {[Eu(C8H7O2)3]3}n, is coordinated by nine O atoms, and three Eu atoms form a trimeric unit. These trimeric units are linked by bridging-chelating carboxyl­ates to form an infinite one-dimensional polymer chain.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270101003560/vj1129sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S0108270101003560/vj1129Isup2.hkl
Contains datablock I

CCDC reference: 166960

Comment top

Rare earth carboxylate complexes have many special structures and interesting luminescent properties. The carboxylate groups may be coordinated simultaneously to metal ions in three modes, viz. bridging, chelating and bridging–chelating. The europium luminescent probe has been widely used in the local structure determination of crystalline materials. Our interest has focused on the crystal structures of europium complexes and their high-resolution laser-exited excitation and emission spectra. We report here a new europium complex, [Eu(C8H7O2)3]3n, (I) (Fig. 1).

In (I), each Eu atom is coordinated by nine O atoms from six different carboxylate groups, and all the carboxylate groups are coordinated in bridging–chelating modes, with two O atoms chelating one Eu3+ ion to form a tridentate bridge. Three Eu3+ ions, linked by three carboxylate groups, form a trimeric unit. Theses trimeric units are then linked to one another along the b axis by three bridging–chelating carboxylates to form an infinite one-dimensional polymer chain.

Most of the Eu—O bond lengths [range 2.343 (3)–2.963 (5) Å] agree with those in the similar compound Eu2(p-CH3C6H4COO)6(2,2'-bipy), (II) (Wang et al., 1995), but the Eu2—O7 bond length is significantly larger than the Eu—O bond in (II). The difference may be due to their different chelating modes.

From the Eu1—C8, Eu1—C24, Eu1—C16, Eu2—C48, Eu2—C40 and Eu3—C72 distances [range 2.830 (5)–2.895 (5) Å], we can see that the bond between the Eu and C atoms is very weak, and no chemical bond exists between Eu3 and C56 (or C64) or between Eu2 and C32. The Eu···Eu distance, when the atoms are bridged by four bidentate carboxylate groups, is longer than when they are bridged by three carboxylate groups, as in the present case.

The O—Eu—O angles in (I) vary from 49.58 (10) to 159.60 (14)°, in agreement with those in (II).

In most complexes containing MBA or MOBA (MBA is methylbenzonic acid and MOBA is methoxybenzonic acid), the Eu atoms are eight-coordinated by bidentate carboxylate ligands, as in (II), [Eu2(p-MBA)6(phen)2] [(III); Jin et al., 1994; phen is phenanthroline], [Eu(m-MOBA)3(2,2'-bipy)] [(IV); Li, Zheng et al., 2000; 2,2'-bipy is 2,2'-bipyridine], [Eu(m-MOBA)3(H2O)2].0.5(4,4'-bipy) [(V); Li, Bian et al., 2000; 4,4'-bipy is 4,4'-bipyridine] and [Eu(m-MBA)3(H2O)2], (VI). Complex (I) may be a unique complex of this type where Eu is nine-coordinated.

It should also be noted that there are no hydrogen bonds in (I), while many Eu complexes, such as (V) and (VI), contain hydrogen bonds which can stabilize the complexes.

Complexes (I) and (II) show that the coordinating ability of phen, 2,2'-bipy, p-MBA and p-MOBA is stronger than that of H2O; (V) and (VI) show that m-MOBA, m-MBA and H2O may have similar coordinating ability; and (I) and (IV) show that 4,4'-bipy is a very weak ligand because it cannot form a five-membered chelate ring.

Related literature top

For related literature, see: Jin et al. (1994); Li, Bian & Jin (2000); Li, Zheng & Jin (2000); Wang et al. (1995).

Experimental top

4-Methylbenzoic acid (3 mmol) was dissolved in 95% ethanol (25 ml) and its pH was maintaineded in the range 6–7 with NaOH (2 mol l-1) solution. Then Eu(NO3)3 (1 mmol) dissolved in H2O (5 ml) was added to the solution. The mixture was heated at 353 K under reflux with stirring for 6 h. A white precipitate was formed which was then filtered off. White prism-shaped crystals were obtained from the mother liquor after 2 weeks.

Refinement top

H atoms were placed at calculated positions with a C—H distance of 0.93 Å.

Computing details top

Data collection: XSCANS (Fait, 1991); cell refinement: XSCANS; data reduction: SHELXTL (Sheldrick, 1997a); program(s) used to solve structure: SHELXS97 (Sheldrick, 1990); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997b); molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.

Figures top
[Figure 1]
Fig. 1. View of the title complex with displacement ellipsoids are shown at the 30% probability level. [Symmetry code: (i) -3/2 - x, y - 1/2, 1/2 - z.]

Fig. 2. The packing of the polymeric chains viewed approximately along the b axis.
catena-poly[europium(III)-tri-µ-4-methylbenzoato-O:O,O';O:O,O';O,O':O'] top
Crystal data top
[Eu3(C8H7O2)9]F(000) = 3312
Mr = 1672.10Dx = 1.665 Mg m3
Monoclinic, P21/nMo Kα radiation, λ = 0.71073 Å
a = 12.988 (1) ÅCell parameters from 28 reflections
b = 21.823 (2) Åθ = 3.2–16.4°
c = 23.542 (4) ŵ = 2.86 mm1
β = 90.84 (1)°T = 298 K
V = 6672.0 (14) Å3Prism, white
Z = 40.32 × 0.20 × 0.18 mm
Data collection top
Siemens P4
diffractometer
8293 reflections with I > 2σ(I)
Radiation source: normal-focus sealed tubeRint = 0.020
Graphite monochromatorθmax = 25.0°, θmin = 1.7°
ω scansh = 015
Absorption correction: empirical (using intensity measurements)
(Kopfman & Huber, 1968)
k = 025
Tmin = 0.571, Tmax = 0.629l = 2727
13082 measured reflections3 standard reflections every 97 reflections
11743 independent reflections intensity decay: 5.1%
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.031H-atom parameters constrained
wR(F2) = 0.060 w = 1/[σ2(Fo2) + (0.0235P)2]
where P = (Fo2 + 2Fc2)/3
S = 0.90(Δ/σ)max = 0.005
11743 reflectionsΔρmax = 0.81 e Å3
848 parametersΔρmin = 0.55 e Å3
0 restraintsExtinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.000078 (6)
Crystal data top
[Eu3(C8H7O2)9]V = 6672.0 (14) Å3
Mr = 1672.10Z = 4
Monoclinic, P21/nMo Kα radiation
a = 12.988 (1) ŵ = 2.86 mm1
b = 21.823 (2) ÅT = 298 K
c = 23.542 (4) Å0.32 × 0.20 × 0.18 mm
β = 90.84 (1)°
Data collection top
Siemens P4
diffractometer
8293 reflections with I > 2σ(I)
Absorption correction: empirical (using intensity measurements)
(Kopfman & Huber, 1968)
Rint = 0.020
Tmin = 0.571, Tmax = 0.6293 standard reflections every 97 reflections
13082 measured reflections intensity decay: 5.1%
11743 independent reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0310 restraints
wR(F2) = 0.060H-atom parameters constrained
S = 0.90Δρmax = 0.81 e Å3
11743 reflectionsΔρmin = 0.55 e Å3
848 parameters
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Eu10.714116 (19)1.312782 (10)0.258538 (9)0.02961 (7)
Eu20.783652 (17)1.482469 (11)0.273650 (9)0.02842 (6)
Eu30.710338 (18)1.648647 (10)0.266596 (10)0.03110 (7)
O10.6764 (2)1.20403 (14)0.29244 (12)0.0379 (8)
O20.5622 (2)1.27554 (15)0.31032 (14)0.0443 (9)
O30.5661 (3)1.35361 (15)0.21068 (14)0.0455 (9)
O40.6312 (2)1.42125 (14)0.26859 (13)0.0393 (8)
O50.7565 (3)1.31085 (16)0.35960 (13)0.0504 (10)
O60.8270 (2)1.38653 (13)0.31214 (12)0.0320 (7)
O70.7997 (3)1.3779 (2)0.19376 (15)0.0726 (13)
O80.8963 (3)1.4601 (2)0.19565 (16)0.0712 (13)
O90.9557 (2)1.51057 (15)0.30221 (14)0.0479 (9)
O100.8623 (2)1.59064 (14)0.28238 (13)0.0394 (8)
O110.7445 (3)1.49540 (15)0.37353 (13)0.0439 (9)
O120.6597 (2)1.56006 (13)0.32048 (12)0.0332 (7)
O130.7076 (3)1.54703 (15)0.20668 (13)0.0456 (9)
O140.6446 (3)1.63074 (17)0.17091 (15)0.0589 (11)
O150.7129 (3)1.67799 (16)0.36381 (14)0.0573 (11)
O160.8087 (3)1.74393 (16)0.31867 (13)0.0481 (9)
O170.5308 (2)1.67504 (15)0.27231 (14)0.0479 (9)
O180.6310 (2)1.75258 (14)0.24901 (13)0.0371 (8)
C10.3919 (4)1.0626 (3)0.4813 (2)0.0663 (18)
H1A0.33191.08290.49640.080*
H1B0.37221.02450.46420.080*
H1C0.43931.05490.51130.080*
C20.4429 (4)1.1030 (3)0.4369 (2)0.0441 (13)
C30.5240 (4)1.0825 (2)0.4045 (2)0.0493 (14)
H30.54781.04260.40910.059*
C40.5714 (4)1.1206 (2)0.3646 (2)0.0467 (14)
H40.62601.10560.34270.056*
C50.5391 (4)1.1799 (2)0.35706 (18)0.0343 (11)
C60.4570 (4)1.2011 (2)0.3899 (2)0.0456 (13)
H60.43421.24130.38590.055*
C70.4089 (4)1.1621 (3)0.4288 (2)0.0514 (15)
H70.35261.17630.44980.062*
C80.5941 (4)1.2222 (2)0.31802 (18)0.0327 (11)
C90.2045 (5)1.5572 (3)0.1936 (3)0.092 (2)
H9A0.14221.53420.19940.111*
H9B0.20451.59190.21870.111*
H9C0.20851.57120.15500.111*
C100.2960 (4)1.5169 (3)0.2059 (2)0.0597 (16)
C110.3761 (4)1.5386 (3)0.2383 (2)0.0581 (16)
H110.37281.57800.25330.070*
C120.4616 (4)1.5021 (2)0.2487 (2)0.0491 (14)
H120.51361.51660.27180.059*
C130.4697 (4)1.4445 (2)0.22490 (19)0.0361 (12)
C140.3895 (4)1.4233 (3)0.1930 (2)0.0583 (16)
H140.39331.38430.17700.070*
C150.3042 (5)1.4585 (3)0.1843 (3)0.074 (2)
H150.25041.44270.16320.089*
C160.5598 (4)1.4047 (2)0.2351 (2)0.0365 (12)
C171.0720 (5)1.4138 (3)0.5507 (2)0.0732 (19)
H17A1.05981.38470.58060.088*
H17B1.14301.41200.53890.088*
H17C1.05611.45430.56410.088*
C181.0044 (4)1.3987 (3)0.5010 (2)0.0521 (15)
C191.0233 (4)1.4245 (2)0.4480 (2)0.0564 (15)
H191.07861.45120.44320.068*
C200.9619 (4)1.4117 (2)0.4025 (2)0.0499 (14)
H200.97491.43060.36770.060*
C210.8815 (4)1.3711 (2)0.40787 (19)0.0387 (12)
C220.8621 (4)1.3437 (3)0.4603 (2)0.0570 (16)
H220.80871.31560.46460.068*
C230.9238 (5)1.3589 (3)0.5062 (2)0.0638 (17)
H230.90961.34140.54150.077*
C240.8170 (4)1.3550 (2)0.35879 (19)0.0368 (12)
C251.1514 (5)1.3037 (3)0.0059 (2)0.076 (2)
H25A1.14931.32940.02720.091*
H25B1.22051.30240.01980.091*
H25C1.12961.26310.00380.091*
C261.0795 (4)1.3298 (3)0.0520 (2)0.0475 (14)
C271.1025 (4)1.3851 (3)0.0772 (2)0.0510 (14)
H271.16261.40570.06690.061*
C281.0373 (4)1.4101 (2)0.1176 (2)0.0425 (13)
H281.05321.44760.13410.051*
C290.9481 (4)1.3796 (2)0.13361 (19)0.0369 (12)
C300.9264 (4)1.3252 (2)0.1087 (2)0.0540 (15)
H300.86591.30490.11870.065*
C310.9918 (5)1.2993 (3)0.0687 (2)0.0621 (17)
H310.97651.26130.05310.075*
C320.8768 (4)1.4090 (3)0.1767 (2)0.0509 (15)
C331.2904 (5)1.7206 (3)0.3634 (3)0.107 (3)
H33A1.35301.70790.34470.129*
H33B1.27611.76250.35410.129*
H33C1.29771.71670.40380.129*
C341.2023 (5)1.6804 (3)0.3441 (2)0.0674 (19)
C351.2070 (4)1.6178 (4)0.3502 (2)0.074 (2)
H351.26561.59980.36510.089*
C361.1255 (4)1.5813 (3)0.3344 (2)0.0563 (15)
H361.13021.53900.33840.068*
C371.0363 (4)1.6070 (2)0.31259 (19)0.0392 (12)
C381.0326 (4)1.6696 (2)0.3062 (2)0.0476 (14)
H380.97411.68790.29140.057*
C391.1154 (5)1.7057 (3)0.3217 (2)0.0644 (17)
H391.11191.74790.31670.077*
C400.9479 (4)1.5677 (2)0.29833 (18)0.0367 (12)
C410.4506 (5)1.6164 (3)0.5697 (2)0.086 (2)
H41A0.47281.59360.60220.103*
H41B0.46261.65930.57590.103*
H41C0.37841.60960.56410.103*
C420.5105 (5)1.5956 (2)0.5174 (2)0.0557 (16)
C430.5919 (4)1.5558 (2)0.5214 (2)0.0535 (15)
H430.61101.54140.55690.064*
C440.6463 (4)1.5364 (2)0.4734 (2)0.0484 (14)
H440.70131.50940.47700.058*
C450.6188 (4)1.5569 (2)0.42062 (19)0.0374 (12)
C460.5368 (4)1.5970 (2)0.4160 (2)0.0494 (14)
H460.51781.61140.38050.059*
C470.4829 (4)1.6157 (2)0.4644 (2)0.0598 (16)
H470.42741.64220.46090.072*
C480.6783 (4)1.5362 (2)0.36986 (19)0.0340 (11)
C490.6229 (5)1.4569 (3)0.0533 (2)0.101 (3)
H49A0.68151.46550.07730.121*
H49B0.61681.41340.04800.121*
H49C0.56181.47230.07080.121*
C500.6365 (4)1.4877 (4)0.0039 (2)0.0610 (16)
C510.6387 (4)1.5504 (3)0.0082 (2)0.0642 (17)
H510.63261.57400.02440.077*
C520.6499 (4)1.5794 (3)0.0609 (2)0.0554 (15)
H520.65051.62200.06310.066*
C530.6600 (4)1.5445 (2)0.10960 (19)0.0396 (12)
C540.6586 (4)1.4823 (3)0.1051 (2)0.0481 (13)
H540.66561.45850.13760.058*
C550.6469 (4)1.4539 (3)0.0528 (2)0.0603 (16)
H550.64611.41130.05090.072*
C560.6700 (4)1.5759 (3)0.1645 (2)0.0422 (13)
C570.9602 (6)1.7813 (3)0.5804 (3)0.107 (3)
H57A0.93001.81700.59750.129*
H57B0.95081.74680.60530.129*
H57C1.03251.78810.57390.129*
C580.9086 (5)1.7683 (3)0.5240 (2)0.0660 (18)
C590.9486 (5)1.7922 (3)0.4738 (3)0.0722 (19)
H591.00561.81790.47490.087*
C600.9051 (4)1.7783 (2)0.4222 (2)0.0549 (15)
H600.93281.79470.38880.066*
C610.8206 (4)1.7403 (2)0.42008 (19)0.0401 (12)
C620.7794 (4)1.7170 (2)0.4702 (2)0.0553 (15)
H620.72201.69160.46940.066*
C630.8241 (5)1.7316 (3)0.5211 (2)0.0662 (18)
H630.79551.71600.55460.079*
C640.7768 (4)1.7203 (2)0.3650 (2)0.0375 (12)
C650.1870 (4)1.8615 (3)0.1711 (3)0.077 (2)
H65A0.18851.85680.13060.092*
H65B0.12401.84480.18630.092*
H65C0.19111.90420.18060.092*
C660.2772 (4)1.8280 (3)0.1963 (2)0.0538 (15)
C670.3661 (4)1.8580 (3)0.2092 (2)0.0550 (15)
H670.36941.90040.20520.066*
C680.4519 (4)1.8262 (2)0.2282 (2)0.0459 (13)
H680.51191.84750.23620.055*
C690.4491 (4)1.7637 (2)0.23522 (19)0.0384 (12)
C700.3585 (4)1.7343 (3)0.2241 (2)0.0552 (15)
H700.35391.69230.23030.066*
C710.2742 (4)1.7648 (3)0.2040 (2)0.0657 (17)
H710.21471.74310.19550.079*
C720.5408 (4)1.7287 (2)0.25388 (19)0.0385 (12)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Eu10.03373 (15)0.02382 (13)0.03117 (13)0.00119 (11)0.00341 (10)0.00069 (10)
Eu20.03153 (14)0.02376 (12)0.02997 (12)0.00012 (12)0.00014 (9)0.00014 (11)
Eu30.03273 (15)0.02390 (13)0.03664 (14)0.00119 (12)0.00003 (10)0.00387 (10)
O10.036 (2)0.038 (2)0.0388 (18)0.0004 (16)0.0131 (15)0.0010 (15)
O20.039 (2)0.036 (2)0.058 (2)0.0063 (17)0.0107 (16)0.0102 (17)
O30.045 (2)0.038 (2)0.053 (2)0.0055 (18)0.0103 (17)0.0046 (17)
O40.033 (2)0.0328 (19)0.052 (2)0.0026 (16)0.0050 (16)0.0027 (16)
O50.062 (3)0.049 (2)0.040 (2)0.018 (2)0.0023 (17)0.0041 (17)
O60.037 (2)0.0301 (18)0.0287 (17)0.0013 (15)0.0044 (14)0.0001 (14)
O70.041 (2)0.120 (4)0.057 (3)0.007 (2)0.0127 (19)0.046 (2)
O80.080 (3)0.082 (3)0.051 (3)0.015 (3)0.020 (2)0.013 (2)
O90.037 (2)0.035 (2)0.072 (2)0.0013 (17)0.0143 (17)0.0003 (18)
O100.031 (2)0.035 (2)0.052 (2)0.0002 (16)0.0083 (16)0.0050 (16)
O110.047 (2)0.049 (2)0.0359 (19)0.0184 (18)0.0000 (16)0.0006 (15)
O120.0363 (19)0.0285 (18)0.0348 (18)0.0053 (15)0.0019 (14)0.0015 (14)
O130.048 (2)0.055 (2)0.0335 (19)0.0066 (19)0.0041 (16)0.0072 (17)
O140.075 (3)0.044 (2)0.058 (2)0.005 (2)0.025 (2)0.0068 (19)
O150.079 (3)0.047 (2)0.046 (2)0.020 (2)0.000 (2)0.0036 (17)
O160.045 (2)0.063 (2)0.037 (2)0.0019 (19)0.0060 (16)0.0159 (17)
O170.031 (2)0.040 (2)0.072 (2)0.0018 (17)0.0005 (17)0.0160 (18)
O180.0274 (19)0.0351 (19)0.049 (2)0.0022 (15)0.0014 (15)0.0032 (15)
C10.061 (4)0.085 (5)0.053 (4)0.019 (4)0.007 (3)0.017 (3)
C20.041 (3)0.055 (4)0.036 (3)0.017 (3)0.005 (2)0.001 (3)
C30.055 (4)0.039 (3)0.054 (3)0.007 (3)0.006 (3)0.012 (3)
C40.046 (3)0.048 (3)0.046 (3)0.006 (3)0.012 (3)0.001 (3)
C50.034 (3)0.037 (3)0.032 (3)0.004 (2)0.004 (2)0.000 (2)
C60.040 (3)0.045 (3)0.052 (3)0.001 (3)0.005 (3)0.002 (3)
C70.035 (3)0.074 (4)0.044 (3)0.007 (3)0.013 (2)0.004 (3)
C80.032 (3)0.037 (3)0.030 (3)0.009 (2)0.005 (2)0.003 (2)
C90.075 (5)0.135 (7)0.067 (4)0.059 (5)0.013 (4)0.006 (4)
C100.046 (4)0.086 (5)0.047 (3)0.029 (4)0.004 (3)0.003 (3)
C110.049 (4)0.057 (4)0.069 (4)0.021 (3)0.001 (3)0.010 (3)
C120.034 (3)0.048 (4)0.066 (4)0.003 (2)0.005 (3)0.005 (3)
C130.031 (3)0.039 (3)0.039 (3)0.002 (2)0.001 (2)0.005 (2)
C140.051 (4)0.065 (4)0.060 (4)0.011 (3)0.021 (3)0.010 (3)
C150.054 (4)0.099 (6)0.069 (4)0.014 (4)0.019 (3)0.016 (4)
C160.036 (3)0.036 (3)0.037 (3)0.001 (2)0.009 (2)0.005 (2)
C170.082 (5)0.091 (5)0.047 (4)0.020 (4)0.018 (3)0.012 (3)
C180.057 (4)0.056 (4)0.043 (3)0.015 (3)0.010 (3)0.007 (3)
C190.058 (4)0.057 (4)0.055 (4)0.004 (3)0.013 (3)0.000 (3)
C200.057 (4)0.052 (4)0.041 (3)0.003 (3)0.012 (3)0.008 (3)
C210.046 (3)0.037 (3)0.033 (3)0.005 (3)0.002 (2)0.005 (2)
C220.067 (4)0.065 (4)0.039 (3)0.010 (3)0.003 (3)0.008 (3)
C230.077 (5)0.085 (5)0.029 (3)0.003 (4)0.000 (3)0.007 (3)
C240.038 (3)0.039 (3)0.033 (3)0.009 (3)0.003 (2)0.001 (2)
C250.091 (5)0.088 (5)0.050 (4)0.042 (4)0.013 (3)0.000 (3)
C260.048 (4)0.059 (4)0.035 (3)0.020 (3)0.001 (2)0.008 (3)
C270.035 (3)0.057 (4)0.060 (4)0.001 (3)0.010 (3)0.005 (3)
C280.038 (3)0.041 (3)0.048 (3)0.005 (3)0.005 (2)0.009 (2)
C290.034 (3)0.045 (3)0.031 (3)0.003 (3)0.001 (2)0.006 (2)
C300.059 (4)0.052 (4)0.051 (3)0.019 (3)0.015 (3)0.003 (3)
C310.089 (5)0.040 (3)0.058 (4)0.008 (3)0.003 (3)0.007 (3)
C320.037 (3)0.089 (5)0.027 (3)0.015 (3)0.005 (2)0.016 (3)
C330.097 (6)0.152 (8)0.073 (5)0.069 (6)0.001 (4)0.027 (5)
C340.053 (4)0.096 (6)0.053 (4)0.033 (4)0.001 (3)0.019 (4)
C350.038 (4)0.123 (6)0.063 (4)0.004 (4)0.016 (3)0.009 (4)
C360.043 (4)0.061 (4)0.065 (4)0.006 (3)0.009 (3)0.004 (3)
C370.033 (3)0.044 (3)0.040 (3)0.008 (3)0.000 (2)0.001 (2)
C380.041 (3)0.048 (3)0.053 (3)0.010 (3)0.000 (3)0.001 (3)
C390.062 (4)0.058 (4)0.072 (4)0.023 (4)0.009 (3)0.008 (3)
C400.038 (3)0.041 (3)0.030 (3)0.002 (3)0.004 (2)0.001 (2)
C410.094 (5)0.091 (5)0.071 (4)0.016 (4)0.039 (4)0.032 (4)
C420.065 (4)0.051 (4)0.050 (4)0.011 (3)0.026 (3)0.019 (3)
C430.067 (4)0.059 (4)0.034 (3)0.011 (3)0.005 (3)0.008 (3)
C440.053 (4)0.054 (4)0.038 (3)0.002 (3)0.004 (3)0.009 (2)
C450.041 (3)0.032 (3)0.039 (3)0.005 (2)0.007 (2)0.000 (2)
C460.050 (4)0.045 (3)0.053 (3)0.001 (3)0.011 (3)0.004 (3)
C470.057 (4)0.051 (4)0.071 (4)0.010 (3)0.023 (3)0.009 (3)
C480.035 (3)0.033 (3)0.034 (3)0.008 (2)0.001 (2)0.004 (2)
C490.067 (5)0.185 (8)0.051 (4)0.018 (5)0.004 (3)0.042 (5)
C500.040 (3)0.098 (5)0.045 (4)0.006 (4)0.004 (3)0.012 (4)
C510.053 (4)0.099 (5)0.041 (4)0.002 (4)0.006 (3)0.012 (4)
C520.058 (4)0.061 (4)0.048 (3)0.004 (3)0.014 (3)0.011 (3)
C530.041 (3)0.044 (3)0.033 (3)0.002 (3)0.004 (2)0.004 (2)
C540.048 (3)0.057 (4)0.039 (3)0.000 (3)0.005 (2)0.001 (3)
C550.061 (4)0.059 (4)0.061 (4)0.008 (3)0.006 (3)0.016 (3)
C560.034 (3)0.058 (4)0.035 (3)0.002 (3)0.003 (2)0.005 (3)
C570.165 (8)0.102 (6)0.057 (4)0.010 (6)0.041 (5)0.003 (4)
C580.098 (5)0.062 (4)0.038 (3)0.013 (4)0.018 (3)0.004 (3)
C590.086 (5)0.064 (4)0.067 (4)0.022 (4)0.024 (4)0.004 (3)
C600.074 (4)0.045 (3)0.046 (3)0.007 (3)0.004 (3)0.009 (3)
C610.051 (3)0.035 (3)0.034 (3)0.003 (3)0.006 (2)0.003 (2)
C620.072 (4)0.052 (4)0.042 (3)0.005 (3)0.006 (3)0.000 (3)
C630.091 (5)0.075 (5)0.033 (3)0.004 (4)0.003 (3)0.001 (3)
C640.043 (3)0.031 (3)0.038 (3)0.009 (3)0.003 (2)0.003 (2)
C650.050 (4)0.098 (5)0.083 (5)0.028 (4)0.012 (3)0.003 (4)
C660.047 (4)0.062 (4)0.052 (3)0.016 (3)0.003 (3)0.004 (3)
C670.050 (4)0.043 (3)0.072 (4)0.011 (3)0.005 (3)0.008 (3)
C680.029 (3)0.051 (3)0.057 (3)0.000 (3)0.002 (2)0.004 (3)
C690.029 (3)0.046 (3)0.040 (3)0.002 (3)0.004 (2)0.003 (2)
C700.046 (4)0.048 (4)0.071 (4)0.008 (3)0.007 (3)0.013 (3)
C710.028 (3)0.086 (5)0.084 (5)0.009 (3)0.018 (3)0.007 (4)
C720.043 (3)0.036 (3)0.036 (3)0.001 (3)0.000 (2)0.001 (2)
Geometric parameters (Å, º) top
Eu1—O72.351 (4)C9—C101.510 (7)
Eu1—O16i2.380 (3)C10—C151.376 (8)
Eu1—O18i2.407 (3)C10—C111.382 (7)
Eu1—O32.413 (3)C11—C121.392 (7)
Eu1—O22.443 (3)C12—C131.378 (6)
Eu1—O52.450 (3)C13—C141.375 (6)
Eu1—O62.527 (3)C13—C161.479 (6)
Eu1—O12.549 (3)C14—C151.366 (7)
Eu1—O42.610 (3)C17—C181.509 (7)
Eu1—C82.870 (4)C18—C231.364 (7)
Eu1—C242.880 (5)C18—C191.387 (7)
Eu1—C162.895 (5)C19—C201.373 (7)
Eu2—O132.343 (3)C20—C211.374 (7)
Eu2—O62.353 (3)C21—C221.390 (6)
Eu2—O82.382 (4)C21—C241.479 (6)
Eu2—O42.393 (3)C22—C231.396 (7)
Eu2—O112.415 (3)C25—C261.530 (6)
Eu2—O92.422 (3)C26—C311.372 (7)
Eu2—O122.573 (3)C26—C271.380 (7)
Eu2—O102.581 (3)C27—C281.376 (6)
Eu2—C482.879 (4)C28—C291.384 (6)
Eu2—C402.895 (5)C29—C301.355 (6)
Eu2—O72.963 (5)C29—C321.508 (7)
Eu2—C323.027 (6)C30—C311.380 (7)
Eu3—O1ii2.344 (3)C33—C341.516 (8)
Eu3—O152.377 (3)C34—C391.368 (8)
Eu3—O102.378 (3)C34—C351.376 (8)
Eu3—O122.399 (3)C35—C361.380 (8)
Eu3—O172.403 (3)C36—C371.392 (7)
Eu3—O142.452 (3)C37—C381.376 (6)
Eu3—O182.528 (3)C37—C401.476 (6)
Eu3—O132.629 (3)C38—C391.386 (7)
Eu3—O162.739 (3)C41—C421.516 (7)
Eu3—C722.830 (5)C42—C431.373 (7)
Eu3—C562.933 (5)C42—C471.376 (7)
Eu3—C642.936 (5)C43—C441.391 (6)
O1—C81.282 (5)C44—C451.372 (6)
O1—Eu3i2.344 (3)C45—C461.382 (6)
O2—C81.250 (5)C45—C481.485 (6)
O3—C161.257 (5)C46—C471.390 (7)
O4—C161.279 (5)C49—C501.517 (7)
O5—C241.243 (5)C50—C511.372 (8)
O6—C241.301 (5)C50—C551.377 (8)
O7—C321.270 (6)C51—C521.402 (7)
O8—C321.229 (7)C52—C531.385 (6)
O9—C401.254 (5)C53—C541.362 (6)
O10—C401.281 (5)C53—C561.471 (6)
O11—C481.242 (5)C54—C551.388 (7)
O12—C481.299 (5)C57—C581.522 (7)
O13—C561.279 (5)C58—C631.361 (8)
O14—C561.249 (6)C58—C591.386 (8)
O15—C641.243 (5)C59—C601.382 (7)
O16—C641.271 (5)C60—C611.377 (7)
O16—Eu1ii2.380 (3)C61—C621.384 (6)
O17—C721.255 (5)C61—C641.488 (6)
O18—C721.285 (5)C62—C631.378 (7)
O18—Eu1ii2.407 (3)C65—C661.509 (7)
C1—C21.512 (6)C66—C671.366 (7)
C2—C31.368 (7)C66—C711.392 (7)
C2—C71.377 (7)C67—C681.392 (7)
C3—C41.390 (6)C68—C691.374 (6)
C4—C51.374 (6)C69—C701.370 (6)
C5—C61.387 (6)C69—C721.486 (6)
C5—C81.478 (6)C70—C711.371 (7)
C6—C71.393 (6)
O7—Eu1—O16i87.07 (14)O10—Eu3—C6484.60 (12)
O7—Eu1—O18i83.99 (12)O12—Eu3—C6495.35 (12)
O16i—Eu1—O18i73.26 (11)O17—Eu3—C6497.15 (13)
O7—Eu1—O381.16 (12)O14—Eu3—C64156.99 (13)
O16i—Eu1—O376.57 (11)O18—Eu3—C6477.09 (11)
O18i—Eu1—O3146.90 (11)O13—Eu3—C64151.55 (11)
O7—Eu1—O2153.53 (12)O16—Eu3—C6425.58 (11)
O16i—Eu1—O293.59 (11)C72—Eu3—C6489.60 (13)
O18i—Eu1—O2121.55 (10)C56—Eu3—C64173.18 (13)
O3—Eu1—O273.30 (11)C8—O1—Eu3i161.7 (3)
O7—Eu1—O5121.96 (13)C8—O1—Eu190.8 (3)
O16i—Eu1—O5139.71 (12)Eu3i—O1—Eu1100.27 (10)
O18i—Eu1—O582.11 (11)C8—O2—Eu196.6 (3)
O3—Eu1—O5130.67 (12)C16—O3—Eu199.3 (3)
O2—Eu1—O572.62 (12)C16—O4—Eu2142.8 (3)
O7—Eu1—O670.56 (12)C16—O4—Eu189.5 (3)
O16i—Eu1—O6149.65 (10)Eu2—O4—Eu199.81 (11)
O18i—Eu1—O683.94 (10)C24—O5—Eu197.1 (3)
O3—Eu1—O6118.03 (10)C24—O6—Eu2140.8 (3)
O2—Eu1—O6115.64 (10)C24—O6—Eu191.9 (3)
O5—Eu1—O652.10 (10)Eu2—O6—Eu1103.34 (10)
O7—Eu1—O1148.46 (12)C32—O7—Eu1152.9 (3)
O16i—Eu1—O168.03 (11)C32—O7—Eu280.6 (4)
O18i—Eu1—O170.82 (10)Eu1—O7—Eu291.46 (12)
O3—Eu1—O1109.83 (11)C32—O8—Eu2109.8 (4)
O2—Eu1—O151.98 (10)C40—O9—Eu298.9 (3)
O5—Eu1—O174.03 (10)C40—O10—Eu3168.5 (3)
O6—Eu1—O1123.15 (10)C40—O10—Eu290.7 (3)
O7—Eu1—O472.62 (12)Eu3—O10—Eu298.29 (11)
O16i—Eu1—O4125.88 (11)C48—O11—Eu298.7 (3)
O18i—Eu1—O4147.67 (10)C48—O12—Eu3138.0 (3)
O3—Eu1—O451.46 (10)C48—O12—Eu289.8 (3)
O2—Eu1—O485.84 (10)Eu3—O12—Eu297.99 (10)
O5—Eu1—O491.49 (11)C56—O13—Eu2171.2 (3)
O6—Eu1—O467.58 (10)C56—O13—Eu390.5 (3)
O1—Eu1—O4137.64 (10)Eu2—O13—Eu397.88 (11)
O7—Eu1—C8168.76 (14)C56—O14—Eu399.7 (3)
O16i—Eu1—C882.24 (12)C64—O15—Eu3104.0 (3)
O18i—Eu1—C896.16 (12)C64—O16—Eu1ii150.4 (3)
O3—Eu1—C892.95 (12)C64—O16—Eu385.9 (3)
O2—Eu1—C825.64 (11)Eu1ii—O16—Eu394.22 (11)
O5—Eu1—C869.07 (12)C72—O17—Eu396.2 (3)
O6—Eu1—C8120.67 (10)C72—O18—Eu1ii170.8 (3)
O1—Eu1—C826.53 (11)C72—O18—Eu389.7 (3)
O4—Eu1—C8111.12 (12)Eu1ii—O18—Eu399.19 (11)
O7—Eu1—C2496.76 (14)C3—C2—C7118.4 (5)
O16i—Eu1—C24153.12 (12)C3—C2—C1121.4 (5)
O18i—Eu1—C2480.67 (12)C7—C2—C1120.3 (5)
O3—Eu1—C24130.30 (12)C2—C3—C4120.7 (5)
O2—Eu1—C2494.50 (12)C5—C4—C3121.3 (5)
O5—Eu1—C2425.35 (11)C4—C5—C6118.4 (4)
O6—Eu1—C2426.83 (11)C4—C5—C8121.5 (4)
O1—Eu1—C2497.50 (12)C6—C5—C8119.9 (4)
O4—Eu1—C2480.29 (12)C5—C6—C7119.8 (5)
C8—Eu1—C2494.35 (13)C2—C7—C6121.5 (5)
O7—Eu1—C1677.26 (13)O2—C8—O1119.7 (4)
O16i—Eu1—C16101.41 (13)O2—C8—C5120.8 (4)
O18i—Eu1—C16160.80 (11)O1—C8—C5119.4 (4)
O3—Eu1—C1625.37 (11)O2—C8—Eu157.7 (2)
O2—Eu1—C1676.67 (12)O1—C8—Eu162.6 (2)
O5—Eu1—C16111.31 (13)C5—C8—Eu1170.7 (3)
O6—Eu1—C1693.56 (12)C15—C10—C11117.8 (5)
O1—Eu1—C16125.08 (12)C15—C10—C9121.7 (6)
O4—Eu1—C1626.20 (11)C11—C10—C9120.4 (6)
C8—Eu1—C16101.43 (13)C10—C11—C12120.6 (5)
C24—Eu1—C16105.40 (14)C13—C12—C11120.5 (5)
O13—Eu2—O6154.11 (11)C14—C13—C12118.4 (5)
O13—Eu2—O882.23 (13)C14—C13—C16119.9 (5)
O6—Eu2—O888.10 (12)C12—C13—C16121.7 (5)
O13—Eu2—O486.85 (11)C15—C14—C13121.0 (6)
O6—Eu2—O474.04 (10)C14—C15—C10121.7 (6)
O8—Eu2—O4110.27 (13)O3—C16—O4119.3 (4)
O13—Eu2—O11120.00 (11)O3—C16—C13119.6 (5)
O6—Eu2—O1177.12 (10)O4—C16—C13121.1 (4)
O8—Eu2—O11153.24 (13)O3—C16—Eu155.3 (2)
O4—Eu2—O1187.20 (11)O4—C16—Eu164.3 (2)
O13—Eu2—O9115.73 (11)C13—C16—Eu1171.6 (3)
O6—Eu2—O983.77 (11)C23—C18—C19117.7 (5)
O8—Eu2—O972.97 (14)C23—C18—C17121.5 (5)
O4—Eu2—O9157.32 (11)C19—C18—C17120.7 (6)
O11—Eu2—O983.23 (11)C20—C19—C18121.4 (6)
O13—Eu2—O1268.01 (10)C19—C20—C21120.6 (5)
O6—Eu2—O12124.90 (9)C20—C21—C22119.1 (5)
O8—Eu2—O12146.99 (12)C20—C21—C24121.3 (4)
O4—Eu2—O1282.87 (10)C22—C21—C24119.6 (5)
O11—Eu2—O1252.01 (10)C21—C22—C23119.1 (5)
O9—Eu2—O12106.76 (10)C18—C23—C22122.0 (5)
O13—Eu2—O1071.03 (11)O5—C24—O6118.6 (4)
O6—Eu2—O10133.31 (10)O5—C24—C21122.5 (4)
O8—Eu2—O1090.55 (13)O6—C24—C21118.9 (4)
O4—Eu2—O10147.47 (10)O5—C24—Eu157.6 (2)
O11—Eu2—O1083.89 (10)O6—C24—Eu161.3 (2)
O9—Eu2—O1051.59 (10)C21—C24—Eu1172.2 (3)
O12—Eu2—O1067.04 (9)C31—C26—C27118.9 (5)
O13—Eu2—C4894.83 (13)C31—C26—C25121.3 (5)
O6—Eu2—C4899.97 (12)C27—C26—C25119.8 (5)
O8—Eu2—C48165.86 (14)C28—C27—C26120.7 (5)
O4—Eu2—C4883.26 (11)C27—C28—C29120.0 (5)
O11—Eu2—C4825.23 (11)C30—C29—C28118.9 (5)
O9—Eu2—C4896.22 (12)C30—C29—C32122.3 (5)
O12—Eu2—C4826.84 (11)C28—C29—C32118.8 (5)
O10—Eu2—C4875.45 (11)C29—C30—C31121.6 (5)
O13—Eu2—C4093.89 (13)C26—C31—C30119.8 (5)
O6—Eu2—C40108.25 (12)O8—C32—O7122.4 (5)
O8—Eu2—C4080.81 (14)O8—C32—C29120.2 (5)
O4—Eu2—C40168.87 (12)O7—C32—C29117.3 (6)
O11—Eu2—C4082.81 (12)O8—C32—Eu247.8 (3)
O9—Eu2—C4025.33 (12)O7—C32—Eu275.0 (3)
O12—Eu2—C4087.10 (12)C29—C32—Eu2165.5 (4)
O10—Eu2—C4026.26 (11)C39—C34—C35118.6 (6)
C48—Eu2—C4085.61 (12)C39—C34—C33120.9 (7)
O13—Eu2—O793.59 (11)C35—C34—C33120.5 (7)
O6—Eu2—O762.87 (9)C34—C35—C36120.7 (6)
O8—Eu2—O746.84 (12)C35—C36—C37120.8 (6)
O4—Eu2—O765.72 (10)C38—C37—C36118.1 (5)
O11—Eu2—O7136.04 (10)C38—C37—C40121.6 (5)
O9—Eu2—O7108.34 (11)C36—C37—C40120.3 (5)
O12—Eu2—O7144.75 (10)C37—C38—C39120.5 (5)
O10—Eu2—O7136.95 (10)C34—C39—C38121.3 (6)
C48—Eu2—O7147.30 (11)O9—C40—O10118.8 (4)
C40—Eu2—O7125.24 (12)O9—C40—C37119.8 (5)
O13—Eu2—C3288.81 (12)O10—C40—C37121.4 (4)
O6—Eu2—C3273.95 (12)O9—C40—Eu255.7 (2)
O8—Eu2—C3222.46 (14)O10—C40—Eu263.1 (2)
O4—Eu2—C3289.35 (14)C37—C40—Eu2175.5 (4)
O11—Eu2—C32150.69 (13)C43—C42—C47118.3 (5)
O9—Eu2—C3289.03 (14)C43—C42—C41121.4 (6)
O12—Eu2—C32155.83 (12)C47—C42—C41120.2 (6)
O10—Eu2—C32112.97 (14)C42—C43—C44121.3 (5)
C48—Eu2—C32171.55 (15)C45—C44—C43120.0 (5)
C40—Eu2—C32101.77 (15)C44—C45—C46119.2 (5)
O7—Eu2—C3224.46 (12)C44—C45—C48119.3 (5)
O1ii—Eu3—O15114.49 (12)C46—C45—C48121.5 (4)
O1ii—Eu3—O1081.50 (11)C45—C46—C47120.0 (5)
O15—Eu3—O1088.27 (12)C42—C47—C46121.0 (6)
O1ii—Eu3—O12153.33 (11)O11—C48—O12119.2 (4)
O15—Eu3—O1273.47 (11)O11—C48—C45121.0 (4)
O10—Eu3—O1273.14 (10)O12—C48—C45119.8 (4)
O1ii—Eu3—O17120.62 (11)O11—C48—Eu256.0 (2)
O15—Eu3—O1784.76 (13)O12—C48—Eu263.4 (2)
O10—Eu3—O17157.71 (11)C45—C48—Eu2173.5 (3)
O12—Eu3—O1784.58 (10)C51—C50—C55118.0 (6)
O1ii—Eu3—O1476.19 (12)C51—C50—C49120.7 (6)
O15—Eu3—O14159.60 (14)C55—C50—C49121.4 (7)
O10—Eu3—O14111.07 (12)C50—C51—C52121.3 (6)
O12—Eu3—O14105.13 (11)C53—C52—C51119.8 (6)
O17—Eu3—O1474.88 (12)C54—C53—C52118.8 (5)
O1ii—Eu3—O1872.18 (10)C54—C53—C56122.3 (5)
O15—Eu3—O1885.83 (11)C52—C53—C56118.9 (5)
O10—Eu3—O18147.59 (10)C53—C54—C55121.1 (5)
O12—Eu3—O18134.48 (10)C50—C55—C54121.1 (6)
O17—Eu3—O1852.90 (10)O14—C56—O13118.8 (5)
O14—Eu3—O1881.05 (11)O14—C56—C53121.7 (5)
O1ii—Eu3—O1397.47 (10)O13—C56—C53119.5 (5)
O15—Eu3—O13138.10 (11)O14—C56—Eu355.5 (3)
O10—Eu3—O1369.67 (10)O13—C56—Eu363.7 (3)
O12—Eu3—O1366.31 (10)C53—C56—Eu3172.4 (4)
O17—Eu3—O13102.21 (11)C63—C58—C59118.1 (5)
O14—Eu3—O1350.58 (11)C63—C58—C57121.3 (6)
O18—Eu3—O13131.33 (10)C59—C58—C57120.6 (7)
O1ii—Eu3—O1665.26 (10)C60—C59—C58121.0 (6)
O15—Eu3—O1649.58 (10)C61—C60—C59120.0 (5)
O10—Eu3—O1686.61 (10)C60—C61—C62119.3 (5)
O12—Eu3—O16120.07 (10)C60—C61—C64121.5 (4)
O17—Eu3—O16104.55 (11)C62—C61—C64119.1 (5)
O14—Eu3—O16134.67 (11)C63—C62—C61119.6 (6)
O18—Eu3—O1665.54 (10)C58—C63—C62122.0 (5)
O13—Eu3—O16152.94 (10)O15—C64—O16119.4 (5)
O1ii—Eu3—C7295.81 (12)O15—C64—C61120.1 (4)
O15—Eu3—C7287.55 (13)O16—C64—C61120.4 (5)
O10—Eu3—C72173.58 (12)O15—C64—Eu351.8 (2)
O12—Eu3—C72110.24 (12)O16—C64—Eu368.5 (3)
O17—Eu3—C7226.16 (11)C61—C64—Eu3164.6 (3)
O14—Eu3—C7273.70 (13)C67—C66—C71118.0 (5)
O18—Eu3—C7227.02 (11)C67—C66—C65121.2 (6)
O13—Eu3—C72116.58 (12)C71—C66—C65120.7 (6)
O16—Eu3—C7286.97 (12)C66—C67—C68121.0 (5)
O1ii—Eu3—C5684.92 (12)C69—C68—C67121.0 (5)
O15—Eu3—C56159.97 (13)C70—C69—C68117.5 (5)
O10—Eu3—C5689.93 (13)C70—C69—C72120.7 (5)
O12—Eu3—C5686.92 (12)C68—C69—C72121.7 (5)
O17—Eu3—C5689.46 (13)C69—C70—C71122.1 (5)
O14—Eu3—C5624.82 (12)C70—C71—C66120.3 (5)
O18—Eu3—C56105.85 (13)O17—C72—O18119.9 (4)
O13—Eu3—C5625.85 (11)O17—C72—C69120.1 (4)
O16—Eu3—C56150.16 (12)O18—C72—C69119.9 (4)
C72—Eu3—C5695.66 (14)O17—C72—Eu357.6 (2)
O1ii—Eu3—C6490.24 (12)O18—C72—Eu363.3 (2)
O15—Eu3—C6424.26 (12)C69—C72—Eu3167.5 (3)
Symmetry codes: (i) x3/2, y1/2, z+1/2; (ii) x3/2, y+1/2, z+1/2.

Experimental details

Crystal data
Chemical formula[Eu3(C8H7O2)9]
Mr1672.10
Crystal system, space groupMonoclinic, P21/n
Temperature (K)298
a, b, c (Å)12.988 (1), 21.823 (2), 23.542 (4)
β (°) 90.84 (1)
V3)6672.0 (14)
Z4
Radiation typeMo Kα
µ (mm1)2.86
Crystal size (mm)0.32 × 0.20 × 0.18
Data collection
DiffractometerSiemens P4
diffractometer
Absorption correctionEmpirical (using intensity measurements)
(Kopfman & Huber, 1968)
Tmin, Tmax0.571, 0.629
No. of measured, independent and
observed [I > 2σ(I)] reflections
13082, 11743, 8293
Rint0.020
(sin θ/λ)max1)0.595
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.031, 0.060, 0.90
No. of reflections11743
No. of parameters848
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.81, 0.55

Computer programs: XSCANS (Fait, 1991), XSCANS, SHELXTL (Sheldrick, 1997a), SHELXS97 (Sheldrick, 1990), SHELXL97 (Sheldrick, 1997b), SHELXTL.

Selected geometric parameters (Å, º) top
Eu2—O132.343 (3)Eu2—O92.422 (3)
Eu2—O62.353 (3)Eu2—O122.573 (3)
Eu2—O82.382 (4)Eu2—O102.581 (3)
Eu2—O42.393 (3)Eu2—O72.963 (5)
Eu2—O112.415 (3)Eu2—C323.027 (6)
O5—Eu1—O652.10 (10)Eu2—O6—Eu1103.34 (10)
O15—Eu3—O14159.60 (14)O5—C24—O6118.6 (4)
 

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