(μ-Oxalato-κO,O:O,O)bis-[bis-(2,2'-bipyridine-κN,N')cobalt(II)] μ(6)-oxido-dodeca-μ(2)-oxido-hexa-oxido-hexa-tungstate(VI).

The asymmetric unit of the title compound, [Co(2)(C(2)O(4))(C(10)H(8)N(2))(4)][W(6)O(19)], consists of one half of the complex [Co(2)(C(2)O(4))(C(10)H(8)N(2))(4)](2+) cation and one half of the Lindqvist-type [W(6)O(19)](2-) isopolyanion. Both constituents are completed by crystallographic inversion symmetry. In the dimeric cation, the Co(II) atom is surrounded in a distorted octa-hedral coordination by four N atoms from two chelating 2,2'-bipyridine ligands and by two O atoms from the chelating oxalate anion. The Lindqvist-type anion exhibits the characteristic W-O bond-length distribution, with the shortest bonds being the W-O(terminal) bonds and the longest being those to the central O atom.

Related literature

For general background to polyoxidometalates, see: Pope & Müller (1991 ▶). For polyoxidometalates modified with amines, see: Zhang, Dou et al. (2009 ▶); Zhang, Wei et al. (2009 ▶); Zhang et al. (2010 ▶). For another structure comprising a Lindqvist-type isopolyanion, see: Meng et al. (2006 ▶). For a related structure, see: Li & Xu (2009 ▶).

Experimental

Crystal data

[Co2(C2O4)(C10H8N2)4][W6O19]

M = 2237.72

Triclinic,

a = 9.4876 (15) Å

b = 9.8548 (15) Å

c = 14.174 (2) Å

α = 90.769 (2)°

β = 91.576 (2)°

γ = 91.113 (2)°

V = 1324.3 (4) Å3

Z = 1

Mo Kα radiation

μ = 13.67 mm−1

T = 293 K

0.12 × 0.10 × 0.08 mm

Data collection

Bruker APEXII CCD diffractometer

Absorption correction: multi-scan (SADABS; Bruker, 2001 ▶) T min = 0.291, T max = 0.408

9331 measured reflections

4613 independent reflections

3755 reflections with I > 2σ(I)

R int = 0.027

Refinement

R[F 2 > 2σ(F 2)] = 0.031

wR(F 2) = 0.076

S = 1.00

4613 reflections

368 parameters

H-atom parameters constrained

Δρmax = 2.41 e Å−3

Δρmin = −1.10 e Å−3

Data collection: APEX2 (Bruker, 2004 ▶); cell refinement: SAINT-Plus (Bruker, 2001 ▶); data reduction: SAINT-Plus; 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.

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810023007/wm2358sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536810023007/wm2358Isup2.hkl

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

[Co2(C2O4)(C10H8N2)4][W6O19]	Z = 1
Mr = 2237.72	F(000) = 1022
Triclinic, P1	Dx = 2.806 Mg m−3
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 9.4876 (15) Å	Cell parameters from 3530 reflections
b = 9.8548 (15) Å	θ = 2.5–27.3°
c = 14.174 (2) Å	µ = 13.67 mm−1
α = 90.769 (2)°	T = 293 K
β = 91.576 (2)°	Block, red
γ = 91.113 (2)°	0.12 × 0.10 × 0.08 mm
V = 1324.3 (4) Å3

Bruker APEXII CCD diffractometer	4613 independent reflections
Radiation source: fine-focus sealed tube	3755 reflections with I > 2σ(I)
graphite	Rint = 0.027
φ and ω scans	θmax = 25.0°, θmin = 2.6°
Absorption correction: multi-scan (SADABS; Bruker, 2001)	h = −11→11
Tmin = 0.291, Tmax = 0.408	k = −11→11
9331 measured reflections	l = −16→16

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)] = 0.031	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.076	H-atom parameters constrained
S = 1.00	w = 1/[σ2(Fo2) + (0.0375P)2 + 1.9139P] where P = (Fo2 + 2Fc2)/3
4613 reflections	(Δ/σ)max = 0.001
368 parameters	Δρmax = 2.41 e Å−3
0 restraints	Δρmin = −1.10 e Å−3

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
C1	0.5864 (9)	0.5558 (9)	0.7481 (6)	0.039 (2)
H1	0.6557	0.5423	0.7040	0.046*
C2	0.4503 (10)	0.5210 (10)	0.7228 (7)	0.050 (3)
H2	0.4275	0.4831	0.6638	0.060*
C3	0.3498 (10)	0.5440 (10)	0.7869 (7)	0.050 (3)
H3	0.2562	0.5220	0.7714	0.060*
C4	0.3841 (9)	0.5996 (10)	0.8753 (6)	0.045 (2)
H4	0.3150	0.6150	0.9192	0.054*
C5	0.5239 (8)	0.6314 (8)	0.8957 (5)	0.0262 (18)
C6	0.5713 (9)	0.6925 (8)	0.9874 (5)	0.031 (2)
C7	0.4828 (10)	0.7231 (11)	1.0590 (7)	0.050 (3)
H7	0.3869	0.7028	1.0521	0.061*
C8	0.5343 (12)	0.7834 (12)	1.1405 (7)	0.062 (3)
H8	0.4747	0.8067	1.1889	0.074*
C9	0.6775 (12)	0.8085 (12)	1.1486 (7)	0.064 (3)
H9	0.7157	0.8488	1.2035	0.077*
C10	0.7625 (11)	0.7754 (10)	1.0781 (6)	0.046 (2)
H10	0.8589	0.7931	1.0851	0.055*
C11	0.8337 (10)	0.9655 (10)	0.8619 (7)	0.046 (2)
H11	0.7816	0.9641	0.9166	0.055*
C12	0.8660 (11)	1.0894 (10)	0.8234 (7)	0.052 (3)
H12	0.8396	1.1705	0.8515	0.062*
C13	0.9399 (12)	1.0868 (11)	0.7404 (8)	0.062 (3)
H13	0.9621	1.1676	0.7105	0.074*
C14	0.9796 (10)	0.9684 (10)	0.7032 (7)	0.047 (2)
H14	1.0299	0.9669	0.6478	0.057*
C15	0.9459 (8)	0.8496 (9)	0.7469 (6)	0.0306 (19)
C16	0.9845 (8)	0.7135 (9)	0.7095 (6)	0.0294 (19)
C17	1.0644 (9)	0.6960 (10)	0.6295 (6)	0.040 (2)
H17	1.1000	0.7709	0.5981	0.048*
C18	1.0897 (9)	0.5675 (10)	0.5977 (6)	0.043 (2)
H18	1.1428	0.5541	0.5443	0.052*
C19	1.0363 (9)	0.4584 (10)	0.6452 (6)	0.043 (2)
H19	1.0522	0.3703	0.6243	0.051*
C20	0.9589 (9)	0.4815 (9)	0.7240 (6)	0.035 (2)
H20	0.9230	0.4076	0.7564	0.042*
C21	1.0517 (8)	0.5600 (8)	1.0069 (5)	0.0255 (18)
Co1	0.83213 (11)	0.65380 (11)	0.88211 (7)	0.0263 (3)
N1	0.6258 (7)	0.6078 (7)	0.8323 (4)	0.0302 (16)
N2	0.7116 (7)	0.7170 (7)	0.9974 (5)	0.0328 (17)
N3	0.8729 (7)	0.8481 (7)	0.8254 (5)	0.0325 (16)
N4	0.9334 (7)	0.6070 (7)	0.7558 (4)	0.0269 (15)
O1	1.0227 (6)	0.6668 (6)	0.9616 (4)	0.0350 (14)
O2	0.8466 (5)	0.4532 (6)	0.9359 (4)	0.0318 (13)
O3	0.4860 (7)	0.8809 (7)	0.7694 (4)	0.0521 (18)
O4	0.3221 (6)	1.0289 (6)	0.6381 (4)	0.0362 (14)
O5	0.3335 (6)	1.1440 (6)	0.3892 (4)	0.0369 (15)
O6	0.1293 (7)	1.1836 (7)	0.5300 (5)	0.0540 (18)
O7	0.2326 (6)	0.9278 (6)	0.4737 (4)	0.0383 (15)
O8	0.5000	1.0000	0.5000	0.0219 (16)
O9	0.3985 (6)	0.7844 (6)	0.5844 (4)	0.0342 (14)
O10	0.5765 (6)	0.7561 (6)	0.4464 (4)	0.0373 (14)
O11	0.2952 (7)	0.6576 (7)	0.4139 (5)	0.0528 (18)
O12	0.4107 (6)	0.8997 (6)	0.3357 (4)	0.0338 (14)
W1	0.38156 (4)	0.80202 (4)	0.45023 (2)	0.03214 (12)
W2	0.49167 (4)	0.92799 (4)	0.65534 (2)	0.03134 (12)
W3	0.28645 (4)	1.10717 (4)	0.51619 (2)	0.03216 (12)

	U11	U22	U33	U12	U13	U23
C1	0.039 (5)	0.051 (6)	0.025 (4)	0.002 (5)	−0.004 (4)	−0.011 (4)
C2	0.047 (6)	0.057 (7)	0.044 (6)	0.004 (5)	−0.018 (5)	−0.008 (5)
C3	0.028 (5)	0.061 (7)	0.058 (6)	−0.010 (5)	−0.014 (5)	0.004 (5)
C4	0.031 (5)	0.063 (7)	0.041 (5)	−0.004 (5)	0.000 (4)	−0.002 (5)
C5	0.024 (4)	0.028 (5)	0.027 (4)	0.000 (4)	−0.003 (3)	0.001 (3)
C6	0.032 (5)	0.031 (5)	0.030 (4)	0.001 (4)	0.012 (4)	0.001 (4)
C7	0.038 (6)	0.064 (7)	0.049 (6)	−0.004 (5)	0.011 (5)	−0.014 (5)
C8	0.057 (7)	0.074 (8)	0.055 (7)	−0.002 (6)	0.027 (5)	−0.027 (6)
C9	0.072 (8)	0.083 (9)	0.036 (6)	−0.003 (7)	0.003 (5)	−0.030 (5)
C10	0.052 (6)	0.051 (6)	0.036 (5)	−0.007 (5)	0.003 (4)	−0.014 (5)
C11	0.044 (6)	0.039 (6)	0.056 (6)	0.007 (5)	0.010 (5)	−0.002 (5)
C12	0.064 (7)	0.023 (5)	0.067 (7)	0.006 (5)	−0.001 (6)	−0.008 (5)
C13	0.066 (8)	0.044 (7)	0.074 (8)	−0.007 (6)	−0.002 (6)	0.013 (6)
C14	0.053 (6)	0.042 (6)	0.047 (6)	−0.007 (5)	0.006 (5)	0.001 (5)
C15	0.021 (4)	0.038 (5)	0.033 (4)	−0.002 (4)	−0.006 (3)	0.001 (4)
C16	0.016 (4)	0.038 (5)	0.034 (4)	−0.009 (4)	−0.009 (3)	0.002 (4)
C17	0.039 (5)	0.049 (6)	0.031 (5)	−0.001 (5)	0.011 (4)	0.009 (4)
C18	0.036 (5)	0.056 (7)	0.038 (5)	0.002 (5)	0.009 (4)	−0.005 (5)
C19	0.047 (6)	0.044 (6)	0.037 (5)	0.004 (5)	0.003 (4)	−0.015 (4)
C20	0.034 (5)	0.028 (5)	0.042 (5)	0.000 (4)	0.002 (4)	−0.002 (4)
C21	0.016 (4)	0.029 (5)	0.032 (4)	−0.004 (3)	0.005 (3)	−0.005 (4)
Co1	0.0243 (6)	0.0289 (6)	0.0258 (6)	0.0001 (5)	0.0035 (4)	−0.0003 (5)
N1	0.026 (4)	0.034 (4)	0.031 (4)	0.001 (3)	0.005 (3)	−0.001 (3)
N2	0.034 (4)	0.031 (4)	0.033 (4)	−0.003 (3)	0.006 (3)	−0.011 (3)
N3	0.034 (4)	0.027 (4)	0.037 (4)	0.001 (3)	0.004 (3)	0.004 (3)
N4	0.026 (4)	0.028 (4)	0.027 (3)	−0.001 (3)	0.003 (3)	−0.002 (3)
O1	0.030 (3)	0.037 (4)	0.038 (3)	−0.002 (3)	−0.003 (3)	0.007 (3)
O2	0.023 (3)	0.036 (4)	0.035 (3)	−0.004 (3)	−0.005 (2)	0.004 (3)
O3	0.065 (5)	0.059 (5)	0.033 (3)	0.007 (4)	0.004 (3)	0.003 (3)
O4	0.032 (3)	0.048 (4)	0.029 (3)	0.001 (3)	0.014 (2)	−0.008 (3)
O5	0.037 (3)	0.041 (4)	0.032 (3)	0.009 (3)	0.000 (3)	0.000 (3)
O6	0.039 (4)	0.068 (5)	0.055 (4)	0.010 (4)	0.002 (3)	−0.014 (4)
O7	0.028 (3)	0.053 (4)	0.034 (3)	0.002 (3)	0.002 (3)	−0.008 (3)
O8	0.021 (4)	0.024 (4)	0.021 (4)	0.004 (3)	0.006 (3)	−0.003 (3)
O9	0.035 (3)	0.033 (4)	0.035 (3)	−0.004 (3)	0.008 (3)	0.000 (3)
O10	0.047 (4)	0.027 (3)	0.039 (3)	0.007 (3)	0.006 (3)	−0.006 (3)
O11	0.054 (4)	0.042 (4)	0.061 (4)	−0.016 (3)	0.009 (3)	−0.013 (3)
O12	0.033 (3)	0.046 (4)	0.022 (3)	0.002 (3)	0.003 (2)	−0.008 (3)
W1	0.0353 (2)	0.0295 (2)	0.0313 (2)	−0.00686 (16)	0.00560 (15)	−0.00922 (15)
W2	0.0381 (2)	0.0338 (2)	0.02229 (18)	0.00114 (16)	0.00478 (14)	−0.00123 (14)
W3	0.0274 (2)	0.0368 (2)	0.0325 (2)	0.00719 (16)	0.00465 (14)	−0.00600 (15)

C1—N1	1.333 (10)	C19—C20	1.373 (11)
C1—C2	1.366 (13)	C19—H19	0.9300
C1—H1	0.9300	C20—N4	1.340 (10)
C2—C3	1.355 (13)	C20—H20	0.9300
C2—H2	0.9300	C21—O2i	1.254 (9)
C3—C4	1.388 (13)	C21—O1	1.271 (9)
C3—H3	0.9300	C21—C21i	1.528 (15)
C4—C5	1.379 (11)	Co1—O1	2.104 (6)
C4—H4	0.9300	Co1—N1	2.101 (7)
C5—N1	1.360 (9)	Co1—N4	2.105 (6)
C5—C6	1.479 (11)	Co1—N2	2.114 (6)
C6—N2	1.351 (10)	Co1—N3	2.119 (7)
C6—C7	1.370 (11)	Co1—O2	2.134 (6)
C7—C8	1.366 (13)	O2—C21i	1.254 (9)
C7—H7	0.9300	O3—W2	1.690 (6)
C8—C9	1.378 (15)	O4—W2	1.919 (6)
C8—H8	0.9300	O4—W3	1.926 (6)
C9—C10	1.343 (12)	O5—W3	1.904 (5)
C9—H9	0.9300	O5—W2ii	1.935 (5)
C10—N2	1.346 (10)	O6—W3	1.698 (6)
C10—H10	0.9300	O7—W3	1.915 (6)
C11—N3	1.325 (11)	O7—W1	1.931 (6)
C11—C12	1.377 (13)	O8—W3ii	2.3185 (4)
C11—H11	0.9300	O8—W3	2.3185 (4)
C12—C13	1.386 (14)	O8—W1	2.3240 (4)
C12—H12	0.9300	O8—W1ii	2.3240 (4)
C13—C14	1.339 (14)	O8—W2ii	2.3252 (5)
C13—H13	0.9300	O8—W2	2.3252 (5)
C14—C15	1.368 (12)	O9—W2	1.912 (6)
C14—H14	0.9300	O9—W1	1.915 (5)
C15—N3	1.327 (10)	O10—W1	1.914 (6)
C15—C16	1.491 (11)	O10—W3ii	1.914 (6)
C16—N4	1.336 (10)	O11—W1	1.696 (6)
C16—C17	1.391 (11)	O12—W1	1.922 (5)
C17—C18	1.367 (12)	O12—W2ii	1.920 (6)
C17—H17	0.9300	W2—O12ii	1.920 (6)
C18—C19	1.372 (12)	W2—O5ii	1.935 (5)
C18—H18	0.9300	W3—O10ii	1.914 (6)
N1—C1—C2	124.0 (8)	C1—N1—Co1	127.4 (5)
N1—C1—H1	118.0	C5—N1—Co1	114.6 (5)
C2—C1—H1	118.0	C10—N2—C6	118.9 (7)
C3—C2—C1	117.5 (9)	C10—N2—Co1	126.0 (6)
C3—C2—H2	121.3	C6—N2—Co1	115.1 (5)
C1—C2—H2	121.3	C11—N3—C15	118.4 (8)
C2—C3—C4	121.2 (9)	C11—N3—Co1	125.9 (6)
C2—C3—H3	119.4	C15—N3—Co1	115.7 (6)
C4—C3—H3	119.4	C20—N4—C16	119.2 (7)
C3—C4—C5	117.8 (8)	C20—N4—Co1	125.2 (6)
C3—C4—H4	121.1	C16—N4—Co1	115.4 (5)
C5—C4—H4	121.1	C21—O1—Co1	114.2 (5)
N1—C5—C4	121.5 (7)	C21i—O2—Co1	113.0 (5)
N1—C5—C6	116.4 (7)	W2—O4—W3	117.6 (2)
C4—C5—C6	122.1 (7)	W3—O5—W2ii	117.3 (3)
N2—C6—C7	120.6 (8)	W3—O7—W1	117.5 (3)
N2—C6—C5	115.4 (6)	W3ii—O8—W3	180.0
C7—C6—C5	124.0 (8)	W3ii—O8—W1	89.833 (16)
C8—C7—C6	120.4 (9)	W3—O8—W1	90.167 (16)
C8—C7—H7	119.8	W3ii—O8—W1ii	90.167 (16)
C6—C7—H7	119.8	W3—O8—W1ii	89.833 (16)
C7—C8—C9	117.8 (9)	W1—O8—W1ii	180.0
C7—C8—H8	121.1	W3ii—O8—W2ii	90.173 (13)
C9—C8—H8	121.1	W3—O8—W2ii	89.827 (13)
C10—C9—C8	120.7 (10)	W1—O8—W2ii	90.203 (14)
C10—C9—H9	119.7	W1ii—O8—W2ii	89.797 (14)
C8—C9—H9	119.7	W3ii—O8—W2	89.827 (13)
N2—C10—C9	121.6 (10)	W3—O8—W2	90.173 (13)
N2—C10—H10	119.2	W1—O8—W2	89.797 (14)
C9—C10—H10	119.2	W1ii—O8—W2	90.203 (14)
N3—C11—C12	123.5 (9)	W2ii—O8—W2	180.0
N3—C11—H11	118.2	W2—O9—W1	118.1 (3)
C12—C11—H11	118.2	W1—O10—W3ii	117.8 (3)
C13—C12—C11	116.4 (9)	W1—O12—W2ii	118.0 (3)
C13—C12—H12	121.8	O11—W1—O10	103.9 (3)
C11—C12—H12	121.8	O11—W1—O9	104.0 (3)
C14—C13—C12	120.2 (10)	O10—W1—O9	86.9 (2)
C14—C13—H13	119.9	O11—W1—O12	104.1 (3)
C12—C13—H13	119.9	O10—W1—O12	86.8 (2)
C13—C14—C15	119.8 (9)	O9—W1—O12	151.9 (2)
C13—C14—H14	120.1	O11—W1—O7	104.1 (3)
C15—C14—H14	120.1	O10—W1—O7	152.1 (2)
N3—C15—C14	121.6 (8)	O9—W1—O7	86.5 (2)
N3—C15—C16	115.2 (7)	O12—W1—O7	86.3 (2)
C14—C15—C16	123.2 (8)	O11—W1—O8	180.0 (3)
N4—C16—C17	121.1 (8)	O10—W1—O8	76.11 (17)
N4—C16—C15	115.8 (7)	O9—W1—O8	76.06 (17)
C17—C16—C15	123.0 (8)	O12—W1—O8	75.87 (17)
C18—C17—C16	119.2 (8)	O7—W1—O8	75.96 (18)
C18—C17—H17	120.4	O3—W2—O9	105.6 (3)
C16—C17—H17	120.4	O3—W2—O4	103.1 (3)
C17—C18—C19	119.5 (8)	O9—W2—O4	87.0 (2)
C17—C18—H18	120.2	O3—W2—O12ii	102.5 (3)
C19—C18—H18	120.2	O9—W2—O12ii	152.0 (2)
C18—C19—C20	118.9 (8)	O4—W2—O12ii	86.6 (2)
C18—C19—H19	120.6	O3—W2—O5ii	104.7 (3)
C20—C19—H19	120.6	O9—W2—O5ii	86.7 (2)
N4—C20—C19	122.1 (8)	O4—W2—O5ii	152.2 (2)
N4—C20—H20	118.9	O12ii—W2—O5ii	86.3 (2)
C19—C20—H20	118.9	O3—W2—O8	178.2 (2)
O2i—C21—O1	125.8 (7)	O9—W2—O8	76.08 (16)
O2i—C21—C21i	117.7 (9)	O4—W2—O8	76.11 (15)
O1—C21—C21i	116.4 (9)	O12ii—W2—O8	75.88 (15)
O1—Co1—N1	164.8 (2)	O5ii—W2—O8	76.08 (16)
O1—Co1—N4	93.3 (2)	O6—W3—O5	104.3 (3)
N1—Co1—N4	96.6 (2)	O6—W3—O7	103.2 (3)
O1—Co1—N2	92.9 (2)	O5—W3—O7	87.2 (2)
N1—Co1—N2	78.4 (3)	O6—W3—O10ii	104.2 (3)
N4—Co1—N2	172.1 (3)	O5—W3—O10ii	87.1 (2)
O1—Co1—N3	90.4 (2)	O7—W3—O10ii	152.6 (2)
N1—Co1—N3	103.0 (3)	O6—W3—O4	102.7 (3)
N4—Co1—N3	77.4 (3)	O5—W3—O4	153.0 (2)
N2—Co1—N3	97.7 (3)	O7—W3—O4	86.6 (2)
O1—Co1—O2	78.3 (2)	O10ii—W3—O4	86.3 (2)
N1—Co1—O2	89.4 (2)	O6—W3—O8	178.8 (2)
N4—Co1—O2	94.3 (2)	O5—W3—O8	76.81 (16)
N2—Co1—O2	91.7 (2)	O7—W3—O8	76.38 (16)
N3—Co1—O2	165.6 (2)	O10ii—W3—O8	76.26 (16)
C1—N1—C5	118.0 (7)	O4—W3—O8	76.16 (15)

Table 1

Selected bond lengths (Å)

Co1—O1	2.104 (6)
Co1—N1	2.101 (7)
Co1—N4	2.105 (6)
Co1—N2	2.114 (6)
Co1—N3	2.119 (7)
Co1—O2	2.134 (6)
O3—W2	1.690 (6)
O4—W2	1.919 (6)
O4—W3	1.926 (6)
O5—W3	1.904 (5)
O5—W2i	1.935 (5)
O6—W3	1.698 (6)
O7—W3	1.915 (6)
O7—W1	1.931 (6)
O8—W3i	2.3185 (4)
O8—W3	2.3185 (4)
O8—W1	2.3240 (4)
O8—W1i	2.3240 (4)
O8—W2i	2.3252 (5)
O8—W2	2.3252 (5)
O9—W2	1.912 (6)
O9—W1	1.915 (5)
O10—W1	1.914 (6)
O10—W3i	1.914 (6)
O11—W1	1.696 (6)
O12—W1	1.922 (5)
O12—W2i	1.920 (6)

Symmetry code: (i) .