Li(VO₂)₃(TeO₃)₂

The title compound, lithium tris­[dioxidovanadium(V)] bis[tri­oxidotellurium(IV)], contains chains of edge-sharing distorted VO₆ octa­hedra. The pyramidal TeO₃ groups crosslink the chains into sheets. Finally, an Li⁺ cation adopting an unusual capped trigonal-bipyramidal LiO₆ geometry bridges the layers to complete a three-dimensional structure.

S1. Comment

The title compound, (I), is the second lithium vanadium tellurite to be characterized by single-crystal diffraction, complementing LiVO₂(TeO₃) (Darriet, 1973). Although vanadium can occur in the III, IV and V oxidation states in inorganic solids (see, for example, Hung et al., 2002; Calin et al., 2003), both these compounds contain only vanadium(V) ions.

The constituent polyhedra for (I) are shown in Fig. 1 and selected geometric data are listed in Table 1. Atom V1 adopts a distorted octahedral coordination with respect to its six O-atom neighbours, with one characteristic short formal double V═O `vanadyl' bond [V—O = 1.582 (5) Å], four V—O bonds of intermediate length, and one longer V—O bond [2.325 (5) Å] trans to the V═O bond. Atoms V2 and V3 also possess vanadyl links with V═O < 1.6 Å and four V—O bonds in the range 1.75–2.03 Å. The sixth bond, trans to the vanadyl link, which completes the distorted octahedron for these atoms (V—O > 2.5 Å), is substantially longer than the equivalent bond for V1.

These very distorted coordination polyhedra are highly characteristic of vanadium(V) and can be correlated theoretically with a second-order Jahn–Teller distortion (Kunz & Brown, 1995) for this d⁰ metal ion. The bond-valence sums (BVS), in valence units, for V1, V2 and V3, calculated by the Brown (1996) method, are 5.10, 5.10 and 5.02, respectively (expected 5.00).

Both Te^IV atoms in (I) display pyramidal geometries with respect to their three closest O-atom neighbours, with Te—O < 2.00 Å, and it is usually assumed that an unseen stereochemically active lone pair of electrons occupies the fourth tetrahedral vertex about Te (Wells, 1962). Te1 is displaced from the plane of O1, O2 and O3 by 0.946 (3) Å, and Te2 is displaced from the O4/O5/O6 plane by 1.042 (3) Å. However, as is typical for tellurium(IV) (Feger et al., 1999; Irvine et al., 2003), there are further O atoms with Te···O < 3.00 Å in the coordination spheres of both Te1 and Te2. The shortest Te···O distance, Te2—O11 = 2.557 (5) Å, might justify describing the Te2 coordination as 3 + 1 (Feger et al., 1999). The BVS for Te1 are 3.74 (for the three close O atoms) and 4.10 (all O atoms within 3.0 Å). For Te2, BVS values of 3.83 (three Te—O bonds < 2.0 Å), 4.03 (four Te—O bonds < 2.6 Å) or 4.24 (six Te—O bonds < 3.0 Å) arise.

Atom Li1 is surrounded by six O atoms within 2.5 Å. If the LiO₆ polyhedron is not simply regarded as irregular, then a possible description is a monocapped trigonal bipyramid (Fig. 2), with the longest bond to O10ⁱ capping through the O3ⁱ/O4ⁱⁱ/O5 face [symmetry codes: (i) x, y, z - 1; (ii) -x, -y, -z]. If the five O atoms forming the trigonal bipyramid are considered, a BVS of 0.88 arises for Li1 (expected = 1.00). If O10ⁱ is included in the calculation, BVS(Li1) rises to 0.95. Thus, the Brown (2002) criterion that a ligand should contribute 4% of the metal valence to be considered as bonded is fulfilled.

The polyhedral connectivity in (I) results in edge-sharing chains of VO₆ octahedra propagating along [001] (Fig. 3). Crystal symmetry requires that the V1 and V3 octahedra form inversion dimers, while the V2 polyhedron shares an edge with one V1 and one V3 octahedron. The edge-sharing V···V separations are: V1···V1^iv = 3.4207 (16) Å, V1···V2^iv = 3.3169 (16) Å, V2···V3^iv = 3.7016 (17) Å and V3···V3^viii = 3.4858 (18) Å [symmetry codes: (iv) 1 - x, -y, 1 - z; (viii) 1 - x, -y, -z]. The O—V—O bond angles for the O atoms involved in the edge-shared links show substantial compression from 90°, falling in the range 70.51 (7)–77.58 (19)°.

When the Te atoms are considered as well as the V and O atoms, (010) sheets arise (Fig. 4) in the structure of (I). It is notable that Te1 bonds to, or caps, a triangle of three vanadium polyheda in the same edge-shared chain. A different triangular capping mode for a Te^IV atom was observed in Cs(VO₂)₃(TeO₃)₂ (Harrison & Buttrey, 2000), in which the three VO₆ groups share corners. Although the title compound and Cs(VO₂)₃(TeO₃)₂ share the same stoichiometry and a `capping' Te atom, they are otherwise structurally quite dissimilar.

Finally, when the Li atoms in (I) are also considered, a three-dimensional network arises (Fig. 5), with LiO₆ groups bridging the (010) sheets, the key bond being Li1–O12ⁱⁱⁱ [symmetry code: (iii) 1 - x, 1 - y, -z]. Significant [100] pseudo-channels in the structure are apparent, which probably accommodate the Te^IV lone pairs. Thus, any free space accessible by other chemical species is limited.

Related literature

For related literature, see: Brown (1996, 2002); Calin et al. (2003); Darriet (1973); Feger et al. (1999); Harrison & Buttrey (2000); Hung et al. (2002); Irvine et al. (2003); Kunz & Brown (1995); Wells (1962).

S2. Experimental

A mixture of V₂O₅ (0.7276 g, 4 mmol), TeO₂ (0.3249 g, 3 mmol) and 1 M aqueous LiOH (7 ml) was placed in a 23 ml Teflon-lined hydrothermal bomb and heated at 438 K for 4 d, followed by cooling to room temperature over a few hours. Upon opening the bomb, the solids were recovered by vacuum filtration, resulting in orange plates and shards of the title compound, accompanied by an as-yet unidentified orange–brown powder, in about a 50:50 ratio.

S3. Refinement

The U^ij values for Li1 were restrained to approximate isostropic behaviour. The highest difference peak is 0.95 Å from Te2 and the deepest difference hole is 0.87 Å from Te1.

Computing details

Data collection: COLLECT (Nonius, 1998); cell refinement: HKL SCALEPACK (Otwinowski & Minor 1997); data reduction: HKL DENZO (Otwinowski & Minor 1997), SCALEPACK and SORTAV (Blessing 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997) and ATOMS (Dowty, 1999); software used to prepare material for publication: SHELXL97.

Figures

	Fig. 1. The asymmetric unit of (I), expanded to show the metal coordination polyhedra. Displacement ellipsoids are drawn at the 70% probability level. Symmetry codes are as in Table 1.
	Fig. 2. The Li coordination in (I), drawn with 50% probability displacement ellipsoids. Symmetry codes are as in Table 1.
	Fig. 3. Polyhedral representation of an [001] chain of edge-sharing VO6 octahedra in (I). Symmetry codes are as in Table 1.
	Fig. 4. Polyhedral representation of an (010) sheet in (I).
	Fig. 5. The unit-cell packing for (I), in polyhedral representation for the VO6 and LiO6 moieties.

lithium tris[dioxidovanadium(V)] bis[trioxidotellurium(IV)]

Crystal data

Li(VO2)3(TeO3)2	Z = 2
Mr = 606.96	F(000) = 544
Triclinic, P1	Dx = 4.365 Mg m^−3
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 6.2370 (4) Å	Cell parameters from 5711 reflections
b = 7.2005 (5) Å	θ = 2.9–27.5°
c = 10.7066 (8) Å	µ = 9.23 mm^−1
α = 92.868 (4)°	T = 120 K
β = 92.743 (5)°	Shard, orange
γ = 105.524 (4)°	0.12 × 0.10 × 0.03 mm
V = 461.77 (6) Å^3

Data collection

Nonius KappaCCD area-detector diffractometer	1730 independent reflections
Radiation source: fine-focus sealed tube	1499 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.050
ω and ϕ scans	θmax = 26.0°, θmin = 2.9°
Absorption correction: multi-scan SADABS (Bruker, 2003)	h = −7→7
Tmin = 0.404, Tmax = 0.769	k = −8→8
3858 measured reflections	l = −13→11

Refinement

Refinement on F^2	18 restraints
Least-squares matrix: full	Primary atom site location: structure-invariant direct methods
R[F^2 > 2σ(F^2)] = 0.036	Secondary atom site location: difference Fourier map
wR(F^2) = 0.089	w = 1/[σ^2(Fo^2) + (0.0498P)^2] where P = (Fo^2 + 2Fc^2)/3
S = 1.02	(Δ/σ)max = 0.015
1730 reflections	Δρmax = 1.71 e Å^−3
163 parameters	Δρmin = −1.93 e Å^−3

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
Li1	0.210 (2)	0.2067 (17)	−0.1027 (11)	0.012 (3)
V1	0.62115 (19)	0.19341 (16)	0.41698 (10)	0.0064 (3)
V2	0.6617 (2)	0.20350 (17)	0.75112 (11)	0.0070 (3)
V3	0.6156 (2)	0.22364 (18)	0.08061 (11)	0.0090 (3)
Te1	0.17387 (7)	0.21515 (6)	0.59701 (4)	0.00690 (16)
Te2	0.13180 (7)	0.18355 (6)	0.21170 (4)	0.00772 (16)
O1	0.1459 (8)	−0.0551 (7)	0.5944 (4)	0.0084 (10)
O2	0.3658 (8)	0.2691 (7)	0.4643 (4)	0.0084 (10)
O3	0.3794 (7)	0.2694 (7)	0.7386 (4)	0.0092 (10)
O4	−0.1411 (8)	0.1208 (7)	0.1142 (4)	0.0108 (11)
O5	0.3000 (8)	0.2305 (7)	0.0707 (4)	0.0098 (10)
O6	0.0930 (8)	−0.0875 (7)	0.2115 (4)	0.0087 (10)
O7	0.7975 (8)	0.3982 (7)	0.4247 (4)	0.0117 (11)
O8	0.6218 (7)	0.1153 (7)	0.5929 (4)	0.0094 (10)
O9	0.8241 (8)	0.4144 (7)	0.7561 (4)	0.0139 (11)
O10	0.5791 (8)	0.1493 (7)	0.9206 (4)	0.0109 (11)
O11	0.5282 (8)	0.1550 (7)	0.2546 (4)	0.0095 (10)
O12	0.7362 (8)	0.4485 (8)	0.0910 (5)	0.0158 (11)

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Li1	0.010 (3)	0.014 (4)	0.011 (3)	0.000 (3)	−0.002 (3)	0.001 (3)
V1	0.0078 (6)	0.0059 (6)	0.0063 (6)	0.0036 (5)	0.0001 (5)	0.0001 (5)
V2	0.0075 (6)	0.0079 (6)	0.0070 (6)	0.0046 (5)	0.0011 (5)	0.0004 (4)
V3	0.0092 (6)	0.0143 (7)	0.0054 (6)	0.0060 (5)	0.0007 (5)	0.0018 (5)
Te1	0.0085 (3)	0.0065 (3)	0.0067 (3)	0.00394 (19)	0.00026 (18)	−0.00020 (18)
Te2	0.0102 (3)	0.0074 (3)	0.0068 (3)	0.00451 (19)	0.00105 (18)	0.00044 (18)
O1	0.011 (2)	0.007 (2)	0.009 (2)	0.005 (2)	−0.0018 (19)	−0.0024 (19)
O2	0.0092 (17)	0.0094 (18)	0.0075 (17)	0.0041 (14)	0.0034 (14)	−0.0004 (14)
O3	0.0098 (17)	0.0115 (18)	0.0068 (17)	0.0046 (14)	−0.0011 (14)	−0.0025 (14)
O4	0.012 (3)	0.015 (3)	0.007 (2)	0.008 (2)	0.000 (2)	−0.004 (2)
O5	0.011 (2)	0.012 (3)	0.008 (2)	0.007 (2)	0.001 (2)	−0.002 (2)
O6	0.011 (2)	0.008 (2)	0.008 (2)	0.004 (2)	−0.0005 (19)	−0.0004 (19)
O7	0.011 (2)	0.010 (3)	0.015 (3)	0.004 (2)	0.002 (2)	0.000 (2)
O8	0.010 (2)	0.010 (3)	0.009 (2)	0.003 (2)	0.000 (2)	0.0011 (19)
O9	0.014 (3)	0.016 (3)	0.013 (3)	0.007 (2)	0.000 (2)	−0.003 (2)
O10	0.016 (3)	0.014 (3)	0.005 (2)	0.009 (2)	0.0010 (19)	0.0029 (19)
O11	0.010 (2)	0.014 (3)	0.005 (2)	0.004 (2)	0.0005 (19)	0.002 (2)
O12	0.016 (3)	0.016 (3)	0.017 (3)	0.008 (2)	0.003 (2)	0.000 (2)

Geometric parameters (Å, º)

Li1—O5	1.899 (12)	V3—O10^iv	2.634 (5)
Li1—O3^i	2.049 (13)	Te1—O2	1.890 (5)
Li1—O6^ii	2.119 (12)	Te1—O3	1.892 (5)
Li1—O4^ii	2.277 (13)	Te1—O1	1.905 (5)
Li1—O12^iii	2.411 (13)	Te1—O6^vi	2.741 (5)
Li1—O10^i	2.447 (14)	Te1—O7^vii	2.764 (5)
V1—O7	1.582 (5)	Te1—O1^vi	2.765 (5)
V1—O11	1.790 (5)	Te2—O5	1.873 (5)
V1—O2	1.899 (5)	Te2—O4	1.888 (5)
V1—O1^iv	1.974 (5)	Te2—O6	1.901 (5)
V1—O8	1.992 (5)	Te2—O11	2.557 (5)
V1—O8^iv	2.325 (5)	Te2—O1^vi	2.801 (5)
V2—O9	1.581 (5)	Te2—O9^vii	2.836 (5)
V2—O8	1.762 (4)	O1—V1^iv	1.974 (5)
V2—O10	1.940 (5)	O3—Li1^viii	2.049 (13)
V2—O3	1.943 (5)	O4—V3^ix	1.885 (5)
V2—O6^iv	1.964 (5)	O4—Li1^ii	2.277 (13)
V2—O11^iv	2.532 (5)	O6—V2^iv	1.964 (5)
V3—O12	1.588 (5)	O6—Li1^ii	2.119 (12)
V3—O10^i	1.755 (4)	O8—V1^iv	2.325 (5)
V3—O4^v	1.885 (5)	O10—V3^viii	1.755 (4)
V3—O5	1.980 (5)	O10—Li1^viii	2.447 (14)
V3—O11	2.014 (5)	O12—Li1^iii	2.411 (13)
O5—Li1—O3^i	133.5 (7)	O10^i—V3—O10^iv	76.6 (2)
O5—Li1—O6^ii	135.4 (7)	O4^v—V3—O10^iv	77.67 (18)
O3^i—Li1—O6^ii	91.0 (5)	O5—V3—O10^iv	80.76 (18)
O5—Li1—O4^ii	93.2 (5)	O11—V3—O10^iv	70.51 (17)
O3^i—Li1—O4^ii	100.1 (5)	O2—Te1—O3	101.7 (2)
O6^ii—Li1—O4^ii	71.7 (4)	O2—Te1—O1	96.9 (2)
O5—Li1—O12^iii	87.6 (5)	O3—Te1—O1	92.8 (2)
O3^i—Li1—O12^iii	81.3 (4)	O2—Te1—O6^vi	172.03 (17)
O6^ii—Li1—O12^iii	105.9 (5)	O3—Te1—O6^vi	77.42 (17)
O4^ii—Li1—O12^iii	177.2 (6)	O1—Te1—O6^vi	75.30 (18)
O5—Li1—O10^i	71.7 (4)	O2—Te1—O7^vii	79.59 (17)
O3^i—Li1—O10^i	69.1 (4)	O3—Te1—O7^vii	92.36 (18)
O6^ii—Li1—O10^i	137.6 (6)	O1—Te1—O7^vii	174.23 (17)
O4^ii—Li1—O10^i	75.4 (4)	O6^vi—Te1—O7^vii	108.32 (14)
O12^iii—Li1—O10^i	107.4 (5)	O2—Te1—O1^vi	83.50 (17)
O7—V1—O11	103.4 (2)	O3—Te1—O1^vi	167.64 (18)
O7—V1—O2	99.5 (2)	O1—Te1—O1^vi	75.32 (19)
O11—V1—O2	93.5 (2)	O6^vi—Te1—O1^vi	95.83 (14)
O7—V1—O1^iv	92.7 (2)	O7^vii—Te1—O1^vi	99.63 (14)
O11—V1—O1^iv	96.1 (2)	O5—Te2—O4	92.7 (2)
O2—V1—O1^iv	162.3 (2)	O5—Te2—O6	98.2 (2)
O7—V1—O8	103.6 (2)	O4—Te2—O6	85.8 (2)
O11—V1—O8	153.0 (2)	O5—Te2—O11	67.97 (17)
O2—V1—O8	82.3 (2)	O4—Te2—O11	151.21 (18)
O1^iv—V1—O8	82.46 (19)	O6—Te2—O11	76.57 (17)
O7—V1—O8^iv	176.8 (2)	O5—Te2—O1^vi	171.12 (17)
O11—V1—O8^iv	77.58 (19)	O4—Te2—O1^vi	82.96 (17)
O2—V1—O8^iv	83.38 (19)	O6—Te2—O1^vi	73.83 (17)
O1^iv—V1—O8^iv	84.18 (18)	O11—Te2—O1^vi	112.89 (14)
O8—V1—O8^iv	75.46 (19)	O5—Te2—O9^vii	88.65 (18)
O9—V2—O8	107.1 (2)	O4—Te2—O9^vii	96.25 (18)
O9—V2—O10	107.6 (2)	O6—Te2—O9^vii	172.78 (16)
O8—V2—O10	145.3 (2)	O11—Te2—O9^vii	104.10 (14)
O9—V2—O3	98.7 (2)	O1^vi—Te2—O9^vii	99.51 (13)
O8—V2—O3	90.2 (2)	Te1—O1—V1^iv	129.4 (2)
O10—V2—O3	82.9 (2)	Te1—O2—V1	134.9 (3)
O9—V2—O6^iv	92.6 (2)	Te1—O3—V2	125.8 (2)
O8—V2—O6^iv	94.2 (2)	Te1—O3—Li1^viii	109.4 (4)
O10—V2—O6^iv	86.0 (2)	V2—O3—Li1^viii	111.0 (4)
O3—V2—O6^iv	166.1 (2)	V3^ix—O4—Te2	139.4 (3)
O9—V2—O11^iv	168.7 (2)	V3^ix—O4—Li1^ii	117.4 (4)
O8—V2—O11^iv	72.41 (19)	Te2—O4—Li1^ii	98.6 (4)
O10—V2—O11^iv	73.93 (18)	Te2—O5—Li1	130.9 (5)
O3—V2—O11^iv	92.65 (18)	Te2—O5—V3	120.0 (2)
O6^iv—V2—O11^iv	76.17 (18)	Li1—O5—V3	105.9 (4)
O12—V3—O10^i	107.0 (2)	Te2—O6—V2^iv	123.3 (2)
O12—V3—O4^v	101.0 (2)	Te2—O6—Li1^ii	103.8 (4)
O10^i—V3—O4^v	95.5 (2)	V2^iv—O6—Li1^ii	129.1 (4)
O12—V3—O5	100.0 (2)	V2—O8—V1	143.9 (3)
O10^i—V3—O5	87.3 (2)	V2—O8—V1^iv	107.7 (2)
O4^v—V3—O5	156.9 (2)	V1—O8—V1^iv	104.54 (19)
O12—V3—O11	106.0 (2)	V3^viii—O10—V2	148.0 (3)
O10^i—V3—O11	146.0 (2)	V3^viii—O10—Li1^viii	93.5 (3)
O4^v—V3—O11	86.2 (2)	V2—O10—Li1^viii	96.5 (3)
O5—V3—O11	79.0 (2)	V1—O11—V3	143.9 (3)
O12—V3—O10^iv	176.2 (2)	V3—O12—Li1^iii	160.6 (4)
O2—Te1—O1—V1^iv	45.3 (3)	O3—V2—O8—V1	72.3 (5)
O3—Te1—O1—V1^iv	−56.9 (3)	O6^iv—V2—O8—V1	−120.9 (5)
O3—Te1—O2—V1	51.2 (4)	O11^iv—V2—O8—V1	165.0 (5)
O1—Te1—O2—V1	−43.2 (4)	O9—V2—O8—V1^iv	−179.2 (2)
O7—V1—O2—Te1	−118.9 (4)	O10—V2—O8—V1^iv	−2.2 (5)
O11—V1—O2—Te1	136.9 (4)	O3—V2—O8—V1^iv	−80.0 (2)
O1^iv—V1—O2—Te1	14.2 (9)	O6^iv—V2—O8—V1^iv	86.8 (2)
O8—V1—O2—Te1	−16.3 (3)	O11^iv—V2—O8—V1^iv	12.69 (18)
O8^iv—V1—O2—Te1	59.8 (3)	O7—V1—O8—V2	30.3 (5)
O2—Te1—O3—V2	−40.6 (3)	O11—V1—O8—V2	−150.1 (4)
O1—Te1—O3—V2	57.1 (3)	O2—V1—O8—V2	−67.7 (5)
Li1^viii—Te1—O3—V2	136.3 (6)	O1^iv—V1—O8—V2	121.3 (5)
O2—Te1—O3—Li1^viii	−176.9 (4)	O8^iv—V1—O8—V2	−152.8 (6)
O1—Te1—O3—Li1^viii	−79.2 (4)	O7—V1—O8—V1^iv	−176.9 (2)
O9—V2—O3—Te1	111.8 (3)	O11—V1—O8—V1^iv	2.7 (5)
O8—V2—O3—Te1	4.4 (3)	O2—V1—O8—V1^iv	85.1 (2)
O10—V2—O3—Te1	−141.5 (3)	O1^iv—V1—O8—V1^iv	−85.9 (2)
O6^iv—V2—O3—Te1	−104.2 (8)	O8^iv—V1—O8—V1^iv	0.0
O11^iv—V2—O3—Te1	−68.0 (3)	O9—V2—O10—V3^viii	−6.0 (6)
O9—V2—O3—Li1^viii	−112.5 (4)	O8—V2—O10—V3^viii	177.0 (4)
O8—V2—O3—Li1^viii	140.1 (4)	O3—V2—O10—V3^viii	−102.9 (6)
O10—V2—O3—Li1^viii	−5.8 (4)	O6^iv—V2—O10—V3^viii	85.5 (6)
O6^iv—V2—O3—Li1^viii	31.5 (10)	O11^iv—V2—O10—V3^viii	162.3 (6)
O11^iv—V2—O3—Li1^viii	67.7 (4)	O9—V2—O10—Li1^viii	101.4 (4)
O5—Te2—O4—V3^ix	−109.7 (4)	O8—V2—O10—Li1^viii	−75.6 (5)
O6—Te2—O4—V3^ix	152.3 (4)	O3—V2—O10—Li1^viii	4.5 (3)
O5—Te2—O4—Li1^ii	97.3 (4)	O6^iv—V2—O10—Li1^viii	−167.1 (3)
O6—Te2—O4—Li1^ii	−0.7 (4)	O11^iv—V2—O10—Li1^viii	−90.3 (3)
O4—Te2—O5—Li1	−2.6 (6)	O9—V2—O10—V3^iv	−167.7 (2)
O6—Te2—O5—Li1	83.5 (6)	O8—V2—O10—V3^iv	15.3 (5)
O4—Te2—O5—V3	−159.5 (3)	O3—V2—O10—V3^iv	95.4 (2)
O6—Te2—O5—V3	−73.3 (3)	O6^iv—V2—O10—V3^iv	−76.2 (2)
O3^i—Li1—O5—Te2	175.7 (6)	O11^iv—V2—O10—V3^iv	0.58 (17)
O6^ii—Li1—O5—Te2	−10.1 (13)	O7—V1—O11—V3	26.0 (5)
O4^ii—Li1—O5—Te2	−77.1 (6)	O2—V1—O11—V3	126.7 (5)
O12^iii—Li1—O5—Te2	100.2 (5)	O1^iv—V1—O11—V3	−68.2 (5)
O10^i—Li1—O5—Te2	−150.6 (4)	O8—V1—O11—V3	−153.6 (4)
O3^i—Li1—O5—V3	−25.0 (10)	O8^iv—V1—O11—V3	−150.9 (5)
O6^ii—Li1—O5—V3	149.2 (8)	O7—V1—O11—V2^iv	165.2 (2)
O4^ii—Li1—O5—V3	82.2 (4)	O2—V1—O11—V2^iv	−94.2 (2)
O12^iii—Li1—O5—V3	−100.5 (4)	O1^iv—V1—O11—V2^iv	70.9 (2)
O10^i—Li1—O5—V3	8.7 (3)	O8—V1—O11—V2^iv	−14.4 (5)
O12—V3—O5—Te2	−102.7 (3)	O8^iv—V1—O11—V2^iv	−11.74 (17)
O10^i—V3—O5—Te2	150.5 (3)	O12—V3—O11—V1	−42.2 (5)
O4^v—V3—O5—Te2	52.7 (6)	O10^i—V3—O11—V1	152.4 (4)
O11—V3—O5—Te2	1.8 (3)	O4^v—V3—O11—V1	58.2 (5)
O10^iv—V3—O5—Te2	73.6 (3)	O5—V3—O11—V1	−139.5 (5)
O12—V3—O5—Li1	95.3 (5)	O10^iv—V3—O11—V1	136.5 (5)
O10^i—V3—O5—Li1	−11.5 (5)	O12—V3—O11—V2^iv	−179.2 (2)
O4^v—V3—O5—Li1	−109.3 (6)	O10^i—V3—O11—V2^iv	15.4 (5)
O11—V3—O5—Li1	−160.2 (5)	O4^v—V3—O11—V2^iv	−78.8 (2)
O10^iv—V3—O5—Li1	−88.4 (4)	O5—V3—O11—V2^iv	83.4 (2)
O5—Te2—O6—V2^iv	68.4 (3)	O10^iv—V3—O11—V2^iv	−0.58 (17)
O4—Te2—O6—V2^iv	160.5 (3)	O10^i—V3—O12—Li1^iii	90.2 (12)
O5—Te2—O6—Li1^ii	−91.4 (4)	O4^v—V3—O12—Li1^iii	−170.4 (12)
O4—Te2—O6—Li1^ii	0.8 (4)	O5—V3—O12—Li1^iii	0.0 (12)
O9—V2—O8—V1	−26.9 (5)	O11—V3—O12—Li1^iii	−81.3 (12)
O10—V2—O8—V1	150.1 (4)

Symmetry codes: (i) x, y, z−1; (ii) −x, −y, −z; (iii) −x+1, −y+1, −z; (iv) −x+1, −y, −z+1; (v) x+1, y, z; (vi) −x, −y, −z+1; (vii) −x+1, −y+1, −z+1; (viii) x, y, z+1; (ix) x−1, y, z.