{μ-6,6′-Dimeth­oxy-2,2′-[propane-1,3-diylbis(nitrilo­methyl­idyne)]diphenolato}trinitratocopper(II)europium(III)

Abstract

In the title complex, [CuEu(C₁₉H₂₀N₂O₄)(NO₃)₃], the Cu^II ion is four-coordinated in a square-planar geometry by two O atoms and two N atoms of the deprotonated Schiff base. The Eu^III atom is ten-coordinate, chelated by three nitrate groups and linked to the four O atoms of the deprotonated Schiff base.

Related literature

For copper–lanthanide complexes of the same Schiff base, see: Elmali & Elerman (2003 ▶); Elmali & Elerman (2004 ▶).

Experimental

Crystal data

• [CuEu(C₁₉H₂₀N₂O₄)(NO₃)₃]

• M _r = 741.90

• Monoclinic,

• a = 11.638 (2) Å

• b = 14.680 (3) Å

• c = 14.853 (3) Å

• β = 101.52 (3)°

• V = 2486.5 (9) ų

• Z = 4

• Mo Kα radiation

• μ = 3.43 mm⁻¹

• T = 291 (2) K

• 0.21 × 0.20 × 0.19 mm

Data collection

• Rigaku R-AXIS RAPID diffractometer

• Absorption correction: multi-scan (ABSCOR; Higashi, 1995 ▶) T _min = 0.527, T _max = 0.568 (expected range = 0.484–0.521)

• 23524 measured reflections

• 5660 independent reflections

• 5072 reflections with I > 2σ(I)

• R _int = 0.031

Refinement

• R[F ² > 2σ(F ²)] = 0.024

• wR(F ²) = 0.058

• S = 1.06

• 5660 reflections

• 354 parameters

• 6 restraints

• H-atom parameters constrained

• Δρ_max = 0.72 e Å⁻³

• Δρ_min = −0.45 e Å⁻³

Data collection: RAPID-AUTO (Rigaku, 1998 ▶); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002 ▶); 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: SHELXL97.

Supplementary Material

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

supplementary crystallographic information

Comment

As shown in Fig. 1, the hexadentate Schiff base ligand links Cu and Eu atoms into a dinuclear complex through two phenolate O atoms, which is similar with the bonding reported for another copper-lanthanide complex of the same ligand (Elmali & Elerman, 2003, 2004). The Eu^III centre in (I) is ten-coordinated by four oxygen atoms from the ligand and six oxygen atoms from three nitrate ions. The Cu^II center is four-coordinate by two nitrogen atoms and two oxygen atoms from the ligand.

Experimental

The title complex was obtained by the treatment of copper(II) acetate monohydrate (0.0499 g, 0.25 mmol) with the Schiff base (0.0855 g, 0.25 mmol) in methanol (25 ml)at room temperature. Then the mixture was refluxed for 3 h after the addition of europium (III) nitrate hexahydrate (0.1117 g, 0.25 mmol). The reaction mixture was cooled and filtered; diethyl ether was allowed to diffuse slowly into the solution of the filtrate. Single crystals were obtained after several days. Analysis calculated for C₁₉H₂₀CuN₅O₁₃Eu: C, 30.78; H, 2.76; Cu, 8.50; N, 9.38; Eu, 20.58; found: C, 30.73; H, 2.70; Cu, 8.56; N, 9.44; Eu, 20.61%.

Refinement

H atoms bound to C atoms were placed in calculated positions and treated as riding on their parent atoms, with C—H = 0.93 Å (aromatic C), C—H = 0.97 Å (methylene C), and with U_iso(H) = 1.2Ueq(C) or C—H = 0.96 Å (methly C) and with U_iso(H) = 1.5Ueq(C).

Figures

Fig. 1.

The molecular structure of (I), showing 40% probability displacement ellipsoids.

Crystal data

[CuEu(C19H20N2O4)(NO3)3]	F000 = 1460
Mr = 741.90	Dx = 1.982 Mg m−3
Monoclinic, P21/n	Mo Kα radiation λ = 0.71073 Å
Hall symbol: -P 2yn	Cell parameters from 17062 reflections
a = 11.638 (2) Å	θ = 3.0–27.5º
b = 14.680 (3) Å	µ = 3.43 mm−1
c = 14.853 (3) Å	T = 291 (2) K
β = 101.52 (3)º	Block, red
V = 2486.5 (9) Å3	0.21 × 0.20 × 0.19 mm
Z = 4

Data collection

Rigaku R-AXIS RAPID diffractometer	5660 independent reflections
Radiation source: fine-focus sealed tube	5072 reflections with I > 2σ(I)
Monochromator: graphite	Rint = 0.031
Detector resolution: 10.000 pixels mm-1	θmax = 27.5º
T = 291(2) K	θmin = 3.1º
ω scans	h = −15→13
Absorption correction: multi-scan(ABSCOR; Higashi, 1995)	k = −19→19
Tmin = 0.527, Tmax = 0.568	l = −19→19
23524 measured reflections

Refinement

Refinement on F2	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.024	H-atom parameters constrained
wR(F2) = 0.058	w = 1/[σ2(Fo2) + (0.0213P)2 + 2.281P] where P = (Fo2 + 2Fc2)/3
S = 1.06	(Δ/σ)max = 0.002
5660 reflections	Δρmax = 0.72 e Å−3
354 parameters	Δρmin = −0.44 e Å−3
6 restraints	Extinction correction: none
Primary atom site location: structure-invariant direct methods

Special details

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 (Ų)

	x	y	z	Uiso*/Ueq
C1	0.9061 (2)	0.36789 (18)	−0.06244 (19)	0.0317 (6)
C2	0.7932 (3)	0.3919 (2)	−0.10789 (19)	0.0345 (6)
C3	0.7755 (3)	0.4599 (2)	−0.1732 (2)	0.0449 (7)
H1	0.6999	0.4743	−0.2038	0.054*
C4	0.8712 (3)	0.5068 (2)	−0.1931 (2)	0.0523 (9)
H2	0.8594	0.5536	−0.2361	0.063*
C5	0.9823 (3)	0.4844 (2)	−0.1499 (2)	0.0463 (8)
H3	1.0456	0.5162	−0.1639	0.056*
C6	1.0024 (3)	0.4136 (2)	−0.0841 (2)	0.0365 (6)
C7	1.1218 (3)	0.3936 (2)	−0.0403 (2)	0.0397 (7)
H4	1.1783	0.4344	−0.0518	0.048*
C8	1.2885 (3)	0.3275 (2)	0.0496 (3)	0.0536 (9)
H5	1.3080	0.3813	0.0876	0.064*
H6	1.3290	0.3320	−0.0013	0.064*
C9	1.3326 (3)	0.2449 (2)	0.1056 (3)	0.0511 (9)
H7	1.3038	0.2462	0.1625	0.061*
H8	1.4176	0.2469	0.1211	0.061*
C10	1.2950 (3)	0.1573 (2)	0.0561 (3)	0.0488 (8)
H9	1.2975	0.1638	−0.0085	0.059*
H10	1.3483	0.1088	0.0815	0.059*
C11	1.1568 (2)	0.05275 (19)	0.09083 (19)	0.0336 (6)
H11	1.2194	0.0126	0.0954	0.040*
C12	1.0502 (2)	0.01617 (18)	0.11234 (18)	0.0304 (6)
C13	1.0533 (3)	−0.0754 (2)	0.1430 (2)	0.0380 (7)
H12	1.1202	−0.1105	0.1442	0.046*
C14	0.9582 (3)	−0.1123 (2)	0.1709 (2)	0.0458 (8)
H13	0.9602	−0.1727	0.1899	0.055*
C15	0.8589 (3)	−0.0602 (2)	0.1710 (2)	0.0413 (7)
H14	0.7953	−0.0853	0.1914	0.050*
C16	0.8541 (2)	0.02870 (19)	0.14095 (19)	0.0321 (6)
C17	0.9492 (2)	0.06820 (17)	0.10940 (17)	0.0282 (5)
C18	0.6700 (3)	0.0552 (3)	0.1857 (3)	0.0560 (9)
H15	0.6339	0.0016	0.1553	0.084*
H16	0.6119	0.1019	0.1839	0.084*
H17	0.7039	0.0408	0.2484	0.084*
C19	0.5899 (3)	0.3491 (3)	−0.1377 (3)	0.0647 (11)
H18	0.5650	0.4115	−0.1394	0.097*
H19	0.5363	0.3122	−0.1121	0.097*
H20	0.5913	0.3287	−0.1988	0.097*
Cu1	1.05535 (3)	0.22819 (2)	0.03974 (2)	0.03036 (8)
Eu1	0.762074 (11)	0.247433 (8)	0.068399 (9)	0.02785 (5)
N1	1.1594 (2)	0.32671 (17)	0.01249 (18)	0.0382 (6)
N2	1.1746 (2)	0.13432 (16)	0.06616 (17)	0.0341 (5)
N3	0.6075 (3)	0.12249 (19)	−0.0485 (2)	0.0504 (7)
N4	0.8226 (5)	0.2655 (3)	0.2660 (2)	0.0872 (15)
N5	0.6480 (2)	0.42062 (17)	0.09471 (18)	0.0433 (6)
O1	0.91672 (16)	0.30177 (13)	0.00059 (14)	0.0353 (4)
O2	0.70508 (18)	0.34136 (15)	−0.08175 (14)	0.0399 (5)
O3	0.93757 (16)	0.15332 (12)	0.07838 (13)	0.0324 (4)
O4	0.76063 (18)	0.08689 (14)	0.13955 (15)	0.0390 (5)
O5	0.7096 (2)	0.13933 (16)	−0.06160 (16)	0.0478 (5)
O6	0.5492 (3)	0.0630 (2)	−0.0900 (3)	0.1037 (13)
O7	0.57208 (18)	0.17165 (15)	0.01090 (16)	0.0445 (5)
O8	0.7188 (3)	0.25602 (16)	0.2249 (2)	0.0633 (8)
O9	0.8490 (5)	0.2703 (3)	0.3497 (2)	0.1377 (17)
O10	0.8992 (3)	0.2700 (2)	0.2174 (2)	0.0809 (10)
O11	0.58719 (19)	0.35057 (16)	0.07275 (17)	0.0478 (5)
O12	0.6061 (3)	0.49507 (18)	0.1043 (2)	0.0779 (9)
O13	0.75861 (19)	0.41086 (15)	0.10619 (17)	0.0457 (5)

Atomic displacement parameters (Ų)

	U11	U22	U33	U12	U13	U23
C1	0.0326 (14)	0.0304 (13)	0.0328 (14)	0.0001 (11)	0.0084 (11)	0.0008 (11)
C2	0.0338 (15)	0.0357 (14)	0.0341 (14)	−0.0031 (12)	0.0074 (12)	0.0002 (12)
C3	0.0492 (19)	0.0455 (18)	0.0374 (16)	0.0018 (15)	0.0022 (14)	0.0098 (13)
C4	0.062 (2)	0.052 (2)	0.0429 (18)	−0.0013 (17)	0.0104 (16)	0.0185 (15)
C5	0.052 (2)	0.0428 (17)	0.0477 (18)	−0.0078 (15)	0.0186 (16)	0.0115 (14)
C6	0.0382 (16)	0.0335 (14)	0.0408 (16)	−0.0030 (12)	0.0149 (13)	0.0017 (12)
C7	0.0350 (16)	0.0353 (15)	0.0528 (18)	−0.0075 (13)	0.0186 (14)	0.0013 (13)
C8	0.0262 (16)	0.0448 (19)	0.089 (3)	−0.0044 (14)	0.0089 (17)	−0.0001 (18)
C9	0.0259 (16)	0.059 (2)	0.067 (2)	−0.0044 (14)	0.0062 (15)	0.0024 (17)
C10	0.0306 (16)	0.0420 (17)	0.079 (2)	0.0051 (14)	0.0225 (16)	0.0063 (16)
C11	0.0298 (14)	0.0363 (14)	0.0340 (14)	0.0067 (12)	0.0052 (11)	0.0010 (12)
C12	0.0329 (14)	0.0304 (13)	0.0280 (13)	0.0012 (11)	0.0065 (11)	−0.0008 (10)
C13	0.0431 (17)	0.0323 (14)	0.0382 (16)	0.0068 (13)	0.0070 (13)	0.0022 (12)
C14	0.057 (2)	0.0283 (14)	0.0526 (19)	−0.0006 (14)	0.0135 (16)	0.0089 (13)
C15	0.0448 (18)	0.0352 (15)	0.0463 (17)	−0.0081 (13)	0.0145 (14)	0.0057 (13)
C16	0.0310 (14)	0.0312 (14)	0.0343 (14)	−0.0015 (11)	0.0072 (11)	0.0011 (11)
C17	0.0323 (14)	0.0268 (12)	0.0254 (12)	−0.0026 (11)	0.0054 (10)	−0.0005 (10)
C18	0.0374 (18)	0.061 (2)	0.077 (3)	−0.0020 (16)	0.0289 (18)	0.0201 (19)
C19	0.0328 (18)	0.084 (3)	0.069 (2)	−0.0063 (18)	−0.0103 (17)	0.024 (2)
Cu1	0.02206 (16)	0.03009 (16)	0.03997 (18)	−0.00026 (13)	0.00866 (14)	0.00474 (14)
Eu1	0.02169 (8)	0.02888 (8)	0.03354 (8)	−0.00131 (5)	0.00688 (5)	−0.00045 (5)
N1	0.0247 (12)	0.0372 (13)	0.0539 (15)	−0.0038 (10)	0.0110 (11)	−0.0005 (11)
N2	0.0254 (12)	0.0361 (13)	0.0422 (13)	0.0030 (10)	0.0103 (10)	0.0021 (10)
N3	0.0429 (16)	0.0409 (15)	0.0632 (18)	−0.0032 (12)	0.0008 (14)	−0.0151 (13)
N4	0.119 (4)	0.100 (3)	0.0346 (16)	0.079 (3)	−0.003 (2)	−0.0102 (17)
N5	0.0479 (17)	0.0361 (14)	0.0454 (15)	0.0078 (12)	0.0084 (12)	0.0007 (11)
O1	0.0274 (10)	0.0341 (10)	0.0457 (11)	0.0018 (8)	0.0107 (9)	0.0132 (9)
O2	0.0270 (10)	0.0460 (12)	0.0437 (12)	−0.0020 (9)	0.0002 (9)	0.0098 (9)
O3	0.0269 (10)	0.0276 (9)	0.0447 (11)	0.0020 (8)	0.0122 (8)	0.0073 (8)
O4	0.0310 (11)	0.0382 (11)	0.0521 (12)	−0.0011 (9)	0.0181 (10)	0.0089 (9)
O5	0.0432 (13)	0.0474 (13)	0.0544 (13)	−0.0019 (11)	0.0136 (11)	−0.0141 (11)
O6	0.068 (2)	0.087 (2)	0.151 (3)	−0.0302 (18)	0.010 (2)	−0.070 (2)
O7	0.0293 (11)	0.0483 (13)	0.0551 (13)	−0.0027 (9)	0.0066 (10)	−0.0091 (11)
O8	0.088 (2)	0.0581 (16)	0.0499 (15)	0.0195 (14)	0.0294 (16)	0.0010 (12)
O9	0.166 (4)	0.192 (4)	0.0457 (17)	0.115 (3)	−0.003 (2)	−0.020 (2)
O10	0.0621 (19)	0.114 (3)	0.0561 (17)	0.0386 (18)	−0.0146 (15)	−0.0300 (17)
O11	0.0298 (11)	0.0466 (13)	0.0674 (15)	0.0017 (10)	0.0107 (10)	−0.0029 (11)
O12	0.089 (2)	0.0437 (14)	0.099 (2)	0.0295 (15)	0.0140 (18)	−0.0063 (15)
O13	0.0378 (12)	0.0380 (12)	0.0607 (14)	−0.0067 (9)	0.0087 (10)	−0.0057 (10)

Geometric parameters (Å, °)

C1—O1	1.337 (3)	C16—O4	1.380 (3)
C1—C6	1.398 (4)	C16—C17	1.409 (4)
C1—C2	1.398 (4)	C17—O3	1.329 (3)
C2—C3	1.378 (4)	C18—O4	1.445 (3)
C2—O2	1.383 (3)	C18—H15	0.9600
C3—C4	1.392 (5)	C18—H16	0.9600
C3—H1	0.9300	C18—H17	0.9600
C4—C5	1.363 (5)	C19—O2	1.433 (4)
C4—H2	0.9300	C19—H18	0.9600
C5—C6	1.414 (4)	C19—H19	0.9600
C5—H3	0.9300	C19—H20	0.9600
C6—C7	1.441 (4)	Cu1—O3	1.9315 (18)
C7—N1	1.278 (4)	Cu1—O1	1.9320 (19)
C7—H4	0.9300	Cu1—N2	1.940 (2)
C8—N1	1.494 (4)	Cu1—N1	1.980 (2)
C8—C9	1.501 (5)	Eu1—O1	2.3694 (19)
C8—H5	0.9700	Eu1—O3	2.4457 (18)
C8—H6	0.9700	Eu1—O13	2.466 (2)
C9—C10	1.502 (5)	Eu1—O7	2.470 (2)
C9—H7	0.9700	Eu1—O8	2.478 (3)
C9—H8	0.9700	Eu1—O10	2.478 (3)
C10—N2	1.478 (4)	Eu1—O5	2.480 (2)
C10—H9	0.9700	Eu1—O11	2.548 (2)
C10—H10	0.9700	Eu1—O4	2.584 (2)
C11—N2	1.281 (4)	Eu1—O2	2.593 (2)
C11—C12	1.445 (4)	N3—O6	1.198 (4)
C11—H11	0.9300	N3—O5	1.266 (4)
C12—C17	1.395 (4)	N3—O7	1.271 (3)
C12—C13	1.418 (4)	N4—O9	1.222 (5)
C13—C14	1.368 (4)	N4—O8	1.249 (5)
C13—H12	0.9300	N4—O10	1.256 (6)
C14—C15	1.387 (5)	N5—O12	1.216 (3)
C14—H13	0.9300	N5—O11	1.254 (3)
C15—C16	1.376 (4)	N5—O13	1.273 (3)
C15—H14	0.9300
O1—C1—C6	122.9 (3)	O1—Eu1—O3	61.31 (6)
O1—C1—C2	117.9 (2)	O1—Eu1—O13	79.49 (7)
C6—C1—C2	119.2 (3)	O3—Eu1—O13	125.96 (7)
C3—C2—O2	124.8 (3)	O1—Eu1—O7	135.09 (7)
C3—C2—C1	121.1 (3)	O3—Eu1—O7	116.46 (7)
O2—C2—C1	114.0 (2)	O13—Eu1—O7	117.56 (7)
C2—C3—C4	119.6 (3)	O1—Eu1—O8	134.09 (10)
C2—C3—H1	120.2	O3—Eu1—O8	107.21 (9)
C4—C3—H1	120.2	O13—Eu1—O8	73.82 (8)
C5—C4—C3	120.3 (3)	O7—Eu1—O8	90.65 (10)
C5—C4—H2	119.8	O1—Eu1—O10	85.77 (10)
C3—C4—H2	119.8	O3—Eu1—O10	68.91 (8)
C4—C5—C6	120.9 (3)	O13—Eu1—O10	72.77 (9)
C4—C5—H3	119.6	O7—Eu1—O10	137.83 (11)
C6—C5—H3	119.6	O8—Eu1—O10	51.04 (12)
C1—C6—C5	118.8 (3)	O1—Eu1—O5	88.53 (8)
C1—C6—C7	122.9 (3)	O3—Eu1—O5	76.02 (8)
C5—C6—C7	118.2 (3)	O13—Eu1—O5	141.92 (8)
N1—C7—C6	127.9 (3)	O7—Eu1—O5	51.56 (8)
N1—C7—H4	116.1	O8—Eu1—O5	134.29 (9)
C6—C7—H4	116.1	O10—Eu1—O5	142.67 (9)
N1—C8—C9	113.9 (3)	O1—Eu1—O11	119.29 (7)
N1—C8—H5	108.8	O3—Eu1—O11	174.77 (7)
C9—C8—H5	108.8	O13—Eu1—O11	50.70 (7)
N1—C8—H6	108.8	O7—Eu1—O11	67.17 (8)
C9—C8—H6	108.8	O8—Eu1—O11	68.45 (9)
H5—C8—H6	107.7	O10—Eu1—O11	105.86 (9)
C8—C9—C10	112.7 (3)	O5—Eu1—O11	109.04 (8)
C8—C9—H7	109.0	O1—Eu1—O4	123.26 (6)
C10—C9—H7	109.0	O3—Eu1—O4	62.20 (6)
C8—C9—H8	109.0	O13—Eu1—O4	142.41 (8)
C10—C9—H8	109.0	O7—Eu1—O4	69.64 (7)
H7—C9—H8	107.8	O8—Eu1—O4	69.12 (7)
N2—C10—C9	109.6 (3)	O10—Eu1—O4	79.18 (10)
N2—C10—H9	109.7	O5—Eu1—O4	73.38 (8)
C9—C10—H9	109.7	O11—Eu1—O4	117.46 (7)
N2—C10—H10	109.7	O1—Eu1—O2	62.67 (7)
C9—C10—H10	109.7	O3—Eu1—O2	114.81 (7)
H9—C10—H10	108.2	O13—Eu1—O2	70.45 (8)
N2—C11—C12	127.3 (3)	O7—Eu1—O2	83.38 (8)
N2—C11—H11	116.3	O8—Eu1—O2	135.61 (8)
C12—C11—H11	116.3	O10—Eu1—O2	134.86 (10)
C17—C12—C13	119.8 (3)	O5—Eu1—O2	71.93 (8)
C17—C12—C11	123.0 (2)	O11—Eu1—O2	68.74 (8)
C13—C12—C11	117.1 (3)	O4—Eu1—O2	144.61 (7)
C14—C13—C12	120.1 (3)	C7—N1—C8	114.6 (3)
C14—C13—H12	120.0	C7—N1—Cu1	122.6 (2)
C12—C13—H12	120.0	C8—N1—Cu1	122.8 (2)
C13—C14—C15	120.5 (3)	C11—N2—C10	117.0 (2)
C13—C14—H13	119.7	C11—N2—Cu1	124.85 (19)
C15—C14—H13	119.7	C10—N2—Cu1	118.15 (19)
C16—C15—C14	120.1 (3)	O6—N3—O5	121.1 (3)
C16—C15—H14	119.9	O6—N3—O7	122.8 (3)
C14—C15—H14	119.9	O5—N3—O7	116.1 (2)
C15—C16—O4	124.9 (3)	O9—N4—O8	121.7 (5)
C15—C16—C17	121.0 (3)	O9—N4—O10	121.3 (5)
O4—C16—C17	114.1 (2)	O8—N4—O10	117.0 (3)
O3—C17—C12	123.5 (2)	O12—N5—O11	123.3 (3)
O3—C17—C16	118.0 (2)	O12—N5—O13	120.2 (3)
C12—C17—C16	118.5 (2)	O11—N5—O13	116.5 (2)
O4—C18—H15	109.5	C1—O1—Cu1	124.84 (17)
O4—C18—H16	109.5	C1—O1—Eu1	124.78 (16)
H15—C18—H16	109.5	Cu1—O1—Eu1	110.09 (8)
O4—C18—H17	109.5	C2—O2—C19	117.1 (2)
H15—C18—H17	109.5	C2—O2—Eu1	116.77 (17)
H16—C18—H17	109.5	C19—O2—Eu1	126.1 (2)
O2—C19—H18	109.5	C17—O3—Cu1	127.52 (17)
O2—C19—H19	109.5	C17—O3—Eu1	125.29 (16)
H18—C19—H19	109.5	Cu1—O3—Eu1	107.10 (8)
O2—C19—H20	109.5	C16—O4—C18	116.2 (2)
H18—C19—H20	109.5	C16—O4—Eu1	120.07 (15)
H19—C19—H20	109.5	C18—O4—Eu1	123.57 (19)
O3—Cu1—O1	78.94 (8)	N3—O5—Eu1	95.64 (17)
O3—Cu1—N2	93.28 (9)	N3—O7—Eu1	95.94 (17)
O1—Cu1—N2	168.21 (10)	N4—O8—Eu1	96.1 (2)
O3—Cu1—N1	167.44 (9)	N4—O10—Eu1	95.9 (3)
O1—Cu1—N1	92.19 (9)	N5—O11—Eu1	94.71 (17)
N2—Cu1—N1	96.78 (10)	N5—O13—Eu1	98.11 (17)