Tetra-μ-acetato-κO:O';κO,O':O;κO:O,O'-bis-[(acetato-κO,O')(1,10-phenanthroline-κN,N')europium(III)].

In the title centrosymmetric dinuclear complex, [Eu(2)(CH(3)CO(2))(6)(C(12)H(8)N(2))(2)], the Eu(III) atom is nine-coordinated by two N atoms from a 1,10-phenanthroline ligand and seven O atoms from five acetate ligands (two bidentate, three monodentate). The crystal structure is stabilized by π-π stacking inter-actions between the pyridine and benzene rings of adjacent mol-ecules, with a centroid-centroid distance of 3.829 (2) Å.

Related literature

For general background to lanthanide complexes based on nitro­gen-containing organic ligands, see: Lima et al. (2009 ▶); Prasad & Rajasekharan (2009 ▶); Xiang et al. (2009 ▶); Yang et al. (2009 ▶).

Experimental

Crystal data

[Eu2(C2H3n class="Chemical">O2)6(C12H8N2)2]

M = 1018.59

Monoclinic,

a = 9.7249 (19) Å

b = 23.670 (5) Å

c = 8.2984 (17) Å

β = 90.32 (3)°

V = 1910.2 (7) Å3

Z = 2

Mo Kα radiation

μ = 3.32 mm−1

T = 293 K

0.20 × 0.10 × 0.08 mm

Data collection

Bruker APEX CCD diffractometer

Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.559, T max = 0.789

18210 measured reflections

4324 independent reflections

2668 reflections with I > 2σ(I)

R int = 0.125

Refinement

R[F 2 > 2σ(F 2)] = 0.057

wR(F 2) = 0.101

S = 0.99

4324 reflections

244 parameters

H-atom parameters constrained

Δρmax = 1.02 e Å−3

Δρmin = −0.90 e Å−3

Data collection: SMART (Bruker, 2007 ▶); cell refinement: SAINT (Bruker, 2007 ▶); 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 ▶) and Mercury (Macrae et al., 2006 ▶); software used to prepare material for publication: SHELXTL.

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810046131/hy2358sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536810046131/hy2358Isup2.hkl

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

[Eu2(C2H3O2)6(C12H8N2)2]	F(000) = 1000
Mr = 1018.59	Dx = 1.771 Mg m−3
Monoclinic, P21/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 3465 reflections
a = 9.7249 (19) Å	θ = 3.3–27.5°
b = 23.670 (5) Å	µ = 3.32 mm−1
c = 8.2984 (17) Å	T = 293 K
β = 90.32 (3)°	Block, colorless
V = 1910.2 (7) Å3	0.20 × 0.10 × 0.08 mm
Z = 2

Bruker APEX CCD diffractometer	4324 independent reflections
Radiation source: fine-focus sealed tube	2668 reflections with I > 2σ(I)
graphite	Rint = 0.125
φ and ω scans	θmax = 27.5°, θmin = 3.3°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −12→12
Tmin = 0.559, Tmax = 0.789	k = −30→30
18210 measured reflections	l = −9→10

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)] = 0.057	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.101	H-atom parameters constrained
S = 0.99	w = 1/[σ2(Fo2) + (0.0299P)2] where P = (Fo2 + 2Fc2)/3
4324 reflections	(Δ/σ)max < 0.001
244 parameters	Δρmax = 1.02 e Å−3
0 restraints	Δρmin = −0.90 e Å−3

	x	y	z	Uiso*/Ueq
Eu1	0.13542 (4)	0.060026 (13)	0.95103 (4)	0.03528 (13)
O1	0.0766 (5)	0.0993 (2)	1.2170 (5)	0.0495 (14)
O2	0.1771 (6)	0.0886 (2)	0.6727 (6)	0.0517 (14)
O3	0.3281 (5)	0.0295 (2)	0.7710 (6)	0.0507 (14)
O4	−0.0904 (5)	0.08694 (18)	0.8702 (6)	0.0472 (13)
O5	−0.2383 (5)	0.01441 (19)	0.8964 (6)	0.0458 (13)
O6	0.0405 (5)	−0.02279 (18)	0.8341 (5)	0.0423 (12)
N1	0.1482 (7)	0.1713 (2)	0.9431 (8)	0.0511 (16)
N2	0.3590 (6)	0.1076 (2)	1.0623 (7)	0.0408 (14)
C1	0.4668 (7)	0.0771 (3)	1.1138 (8)	0.0431 (19)
H1A	0.4622	0.0380	1.1035	0.052*
C2	0.5841 (8)	0.1002 (3)	1.1811 (9)	0.053 (2)
H2A	0.6566	0.0772	1.2133	0.063*
C3	0.5921 (9)	0.1571 (3)	1.1996 (10)	0.066 (3)
H3A	0.6702	0.1733	1.2454	0.079*
C4	0.4818 (8)	0.1915 (3)	1.1492 (10)	0.055 (2)
C5	0.4823 (11)	0.2517 (4)	1.1624 (12)	0.084 (3)
H5A	0.5565	0.2694	1.2124	0.101*
C6	0.3792 (11)	0.2832 (4)	1.1049 (12)	0.086 (3)
H6A	0.3830	0.3222	1.1162	0.103*
C7	0.2628 (9)	0.2580 (3)	1.0260 (10)	0.064 (2)
C8	0.1551 (10)	0.2892 (3)	0.9555 (11)	0.075 (3)
H8A	0.1569	0.3285	0.9596	0.090*
C9	0.0499 (11)	0.2627 (3)	0.8825 (12)	0.083 (3)
H9A	−0.0214	0.2831	0.8352	0.100*
C10	0.0503 (10)	0.2035 (3)	0.8793 (10)	0.067 (3)
H10A	−0.0233	0.1855	0.8289	0.081*
C11	0.2555 (8)	0.1984 (3)	1.0144 (9)	0.049 (2)
C12	0.3674 (8)	0.1641 (3)	1.0785 (8)	0.0447 (19)
C13	−0.0119 (7)	0.0640 (3)	1.2593 (8)	0.0391 (16)
C14	−0.0864 (8)	0.0707 (3)	1.4136 (8)	0.055 (2)
H14A	−0.1052	0.0342	1.4585	0.083*
H14B	−0.1714	0.0903	1.3944	0.083*
H14C	−0.0309	0.0921	1.4877	0.083*
C15	0.2801 (8)	0.0583 (3)	0.6569 (9)	0.0431 (17)
C16	0.3468 (9)	0.0548 (4)	0.4946 (9)	0.063 (2)
H16A	0.4343	0.0736	0.4982	0.095*
H16B	0.2889	0.0727	0.4156	0.095*
H16C	0.3600	0.0159	0.4661	0.095*
C17	−0.2064 (8)	0.0637 (3)	0.8529 (8)	0.0422 (17)
C18	−0.3164 (8)	0.0977 (3)	0.7682 (9)	0.056 (2)
H18A	−0.3995	0.0759	0.7617	0.084*
H18B	−0.2862	0.1071	0.6615	0.084*
H18C	−0.3334	0.1318	0.8275	0.084*

	U11	U22	U33	U12	U13	U23
Eu1	0.0401 (2)	0.02511 (17)	0.0406 (2)	−0.00140 (19)	−0.00452 (14)	−0.00032 (19)
O1	0.061 (4)	0.044 (3)	0.044 (3)	−0.015 (3)	0.004 (3)	−0.011 (2)
O2	0.061 (4)	0.045 (3)	0.049 (3)	0.014 (3)	−0.002 (3)	0.005 (2)
O3	0.046 (3)	0.056 (3)	0.049 (3)	0.011 (3)	−0.004 (3)	0.002 (3)
O4	0.041 (3)	0.036 (3)	0.064 (3)	−0.003 (2)	−0.009 (3)	0.007 (3)
O5	0.047 (3)	0.030 (3)	0.059 (3)	0.000 (2)	−0.014 (3)	0.008 (2)
O6	0.055 (3)	0.027 (3)	0.044 (3)	−0.005 (2)	−0.002 (2)	−0.011 (2)
N1	0.059 (4)	0.033 (3)	0.061 (4)	0.001 (3)	−0.008 (3)	0.001 (3)
N2	0.047 (4)	0.033 (3)	0.042 (3)	−0.006 (3)	0.001 (3)	−0.001 (3)
C1	0.039 (5)	0.035 (4)	0.055 (5)	0.002 (3)	−0.004 (4)	0.003 (3)
C2	0.048 (5)	0.049 (5)	0.062 (5)	−0.003 (4)	−0.012 (4)	−0.006 (4)
C3	0.064 (6)	0.055 (5)	0.077 (6)	−0.007 (5)	−0.019 (5)	−0.014 (5)
C4	0.051 (5)	0.039 (4)	0.075 (6)	−0.008 (4)	−0.007 (4)	−0.002 (4)
C5	0.092 (8)	0.046 (5)	0.114 (8)	−0.016 (5)	−0.034 (7)	−0.012 (6)
C6	0.106 (9)	0.033 (5)	0.118 (9)	−0.011 (5)	−0.021 (7)	−0.015 (5)
C7	0.075 (7)	0.035 (4)	0.081 (6)	−0.002 (4)	−0.008 (5)	−0.003 (4)
C8	0.096 (8)	0.031 (4)	0.099 (7)	0.010 (5)	−0.017 (6)	0.005 (5)
C9	0.101 (8)	0.038 (5)	0.110 (8)	0.014 (5)	−0.037 (7)	0.006 (5)
C10	0.071 (7)	0.045 (5)	0.086 (6)	−0.002 (4)	−0.027 (5)	0.006 (5)
C11	0.057 (5)	0.028 (4)	0.061 (5)	−0.009 (4)	0.003 (4)	−0.003 (4)
C12	0.055 (5)	0.031 (4)	0.048 (4)	−0.006 (4)	0.002 (4)	−0.001 (3)
C13	0.035 (4)	0.037 (4)	0.046 (4)	0.000 (4)	−0.001 (3)	0.000 (4)
C14	0.051 (5)	0.073 (6)	0.042 (4)	−0.006 (4)	0.009 (4)	−0.015 (4)
C15	0.040 (4)	0.031 (4)	0.059 (5)	−0.007 (4)	−0.007 (4)	−0.003 (4)
C16	0.065 (6)	0.074 (6)	0.052 (5)	−0.001 (5)	0.004 (4)	−0.001 (4)
C17	0.043 (4)	0.038 (4)	0.046 (4)	0.009 (4)	0.002 (3)	−0.001 (4)
C18	0.052 (6)	0.059 (5)	0.057 (5)	0.003 (4)	−0.007 (4)	0.011 (4)

Eu1—O1	2.465 (5)	C4—C12	1.412 (9)
Eu1—O2	2.443 (5)	C4—C5	1.428 (10)
Eu1—O3	2.509 (5)	C5—C6	1.335 (11)
Eu1—O4	2.380 (5)	C5—H5A	0.9300
Eu1—O5i	2.387 (4)	C6—C7	1.434 (11)
Eu1—O6	2.372 (4)	C6—H6A	0.9300
Eu1—O6i	2.630 (5)	C7—C8	1.407 (10)
Eu1—N1	2.639 (6)	C7—C11	1.414 (9)
Eu1—N2	2.613 (6)	C8—C9	1.342 (11)
O1—C13	1.251 (8)	C8—H8A	0.9300
O2—C15	1.240 (8)	C9—C10	1.401 (10)
O3—C15	1.254 (8)	C9—H9A	0.9300
O4—C17	1.262 (8)	C10—H10A	0.9300
O5—C17	1.261 (8)	C11—C12	1.456 (10)
O5—Eu1i	2.387 (4)	C13—O6i	1.276 (7)
O6—C13i	1.276 (7)	C13—C14	1.484 (10)
O6—Eu1i	2.630 (5)	C14—H14A	0.9600
N1—C10	1.328 (9)	C14—H14B	0.9600
N1—C11	1.358 (8)	C14—H14C	0.9600
N2—C1	1.342 (8)	C15—C16	1.501 (11)
N2—C12	1.346 (8)	C16—H16A	0.9600
C1—C2	1.381 (9)	C16—H16B	0.9600
C1—H1A	0.9300	C16—H16C	0.9600
C2—C3	1.356 (10)	C17—C18	1.509 (9)
C2—H2A	0.9300	C18—H18A	0.9600
C3—C4	1.409 (11)	C18—H18B	0.9600
C3—H3A	0.9300	C18—H18C	0.9600
O6—Eu1—O4	75.50 (15)	C2—C3—H3A	120.1
O6—Eu1—O5i	76.58 (15)	C4—C3—H3A	120.1
O4—Eu1—O5i	136.96 (17)	C3—C4—C12	117.0 (7)
O6—Eu1—O2	84.76 (16)	C3—C4—C5	123.5 (7)
O4—Eu1—O2	79.46 (18)	C12—C4—C5	119.5 (7)
O5i—Eu1—O2	129.42 (18)	C6—C5—C4	121.8 (8)
O6—Eu1—O1	125.90 (17)	C6—C5—H5A	119.1
O4—Eu1—O1	86.14 (18)	C4—C5—H5A	119.1
O5i—Eu1—O1	84.40 (17)	C5—C6—C7	121.3 (8)
O2—Eu1—O1	141.47 (16)	C5—C6—H6A	119.3
O6—Eu1—O3	78.98 (17)	C7—C6—H6A	119.3
O4—Eu1—O3	126.90 (16)	C8—C7—C11	117.3 (8)
O5i—Eu1—O3	77.95 (17)	C8—C7—C6	123.7 (8)
O2—Eu1—O3	52.29 (16)	C11—C7—C6	119.0 (8)
O1—Eu1—O3	145.03 (16)	C9—C8—C7	120.4 (8)
O6—Eu1—N2	145.30 (17)	C9—C8—H8A	119.8
O4—Eu1—N2	138.49 (16)	C7—C8—H8A	119.8
O5i—Eu1—N2	77.60 (16)	C8—C9—C10	118.3 (8)
O2—Eu1—N2	94.15 (18)	C8—C9—H9A	120.9
O1—Eu1—N2	73.60 (18)	C10—C9—H9A	120.9
O3—Eu1—N2	73.25 (18)	N1—C10—C9	124.7 (8)
O6—Eu1—O6i	75.36 (17)	N1—C10—H10A	117.7
O4—Eu1—O6i	71.21 (16)	C9—C10—H10A	117.7
O5i—Eu1—O6i	70.45 (16)	N1—C11—C7	122.6 (7)
O2—Eu1—O6i	147.77 (16)	N1—C11—C12	117.8 (6)
O1—Eu1—O6i	50.54 (15)	C7—C11—C12	119.6 (7)
O3—Eu1—O6i	142.95 (15)	N2—C12—C4	123.0 (7)
N2—Eu1—O6i	116.62 (16)	N2—C12—C11	118.2 (6)
O6—Eu1—N1	146.45 (16)	C4—C12—C11	118.7 (6)
O4—Eu1—N1	76.66 (18)	O1—C13—O6i	119.3 (7)
O5i—Eu1—N1	136.95 (16)	O1—C13—C14	120.7 (6)
O2—Eu1—N1	72.03 (18)	O6i—C13—C14	120.0 (7)
O1—Eu1—N1	69.92 (18)	C13—C14—H14A	109.5
O3—Eu1—N1	103.7 (2)	C13—C14—H14B	109.5
N2—Eu1—N1	62.53 (18)	H14A—C14—H14B	109.5
O6i—Eu1—N1	112.49 (18)	C13—C14—H14C	109.5
C13—O1—Eu1	99.3 (4)	H14A—C14—H14C	109.5
C15—O2—Eu1	94.4 (4)	H14B—C14—H14C	109.5
C15—O3—Eu1	91.0 (5)	O2—C15—O3	122.2 (7)
C17—O4—Eu1	137.6 (4)	O2—C15—C16	118.7 (7)
C17—O5—Eu1i	137.0 (4)	O3—C15—C16	119.1 (7)
C13i—O6—Eu1	164.5 (5)	C15—C16—H16A	109.5
C13i—O6—Eu1i	90.8 (4)	C15—C16—H16B	109.5
Eu1—O6—Eu1i	104.64 (16)	H16A—C16—H16B	109.5
C10—N1—C11	116.8 (7)	C15—C16—H16C	109.5
C10—N1—Eu1	123.3 (5)	H16A—C16—H16C	109.5
C11—N1—Eu1	119.8 (4)	H16B—C16—H16C	109.5
C1—N2—C12	117.2 (6)	O4—C17—O5	126.3 (6)
C1—N2—Eu1	121.8 (4)	O4—C17—C18	116.8 (7)
C12—N2—Eu1	120.9 (5)	O5—C17—C18	116.9 (7)
N2—C1—C2	123.9 (7)	C17—C18—H18A	109.5
N2—C1—H1A	118.1	C17—C18—H18B	109.5
C2—C1—H1A	118.1	H18A—C18—H18B	109.5
C3—C2—C1	119.1 (7)	C17—C18—H18C	109.5
C3—C2—H2A	120.5	H18A—C18—H18C	109.5
C1—C2—H2A	120.5	H18B—C18—H18C	109.5
C2—C3—C4	119.9 (7)

Table 1

Selected bond lengths (Å)

Eu1—O1	2.465 (5)
Eu1—O2	2.443 (5)
Eu1—O3	2.509 (5)
Eu1—O4	2.380 (5)
Eu1—O5i	2.387 (4)
Eu1—O6	2.372 (4)
Eu1—O6i	2.630 (5)
Eu1—N1	2.639 (6)
Eu1—N2	2.613 (6)

Symmetry code: (i) .