A new sodium dimangnesium trivanadate, NaMg2V3O10

Ayed, B.; Haddad, A.

doi:10.1107/S160053680800322X

inorganic compounds

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ISSN: 2056-9890

Volume 64| Part 3| March 2008| Page i21

doi:10.1107/S160053680800322X

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A new sodium dimangnesium trivanadate, NaMg₂V₃O₁₀

Brahim Ayed ^a ^* and Amor Haddad ^b

^aInstitut Préparatoire aux Études d'Ingénieur de Monastir, Avenue Ibn-El-Jazzar, 5019 Monastir, Tunisia, and ^bDépartament de Chimie, Faculté des Sciences de Monastir, 5000 Monastir, Tunisia
^*Correspondence e-mail: brahimayed@yahoo.fr

(Received 13 December 2007; accepted 29 January 2008; online 20 February 2008)

A single crystal of NaMg₂V₃O₁₀ has been prepared by solid-state reaction at 1173 K. The [Mg₂(V₃O₁₀)]⁻ anions are built up from edge-sharing MgO₆ octahedra to form [Mg₄O₁₈] units, which are linked to each other by trivanadate groups (V₃O₁₀). The Na⁺ ions are located in the tunnel space.

Related literature

For related literature, see: Barbier (1988 ); Brown & Altermatt (1985 ); Gopal & Calvo (1974 ); Krishnamachari & Calvo (1971 ); Mitiaev et al. (2004 ); Murashova et al. (1988a , 1988b ); Ng & Calvo (1972 ); Saux & Galy (1973 ).

Experimental

Crystal data

NaMg₂V₃O₁₀
M_r = 384.42
Triclinic, $[P \overline 1]$
a = 6.7369 (1) Å
b = 6.7553 (1) Å
c = 9.6222 (1) Å
α = 104.325 (1)°
β = 100.604 (1)°
γ = 101.696 (1)°
V = 402.63 (1) Å³
Z = 2
Mo Kα radiation
μ = 3.66 mm⁻¹
T = 293 (2) K
0.4 × 0.07 × 0.03 mm

Data collection

Enraf–Nonius CAD-4 diffractometer
Absorption correction: ψ scan (North et al., 1968 ) T_min = 0.871, T_max = 0.965 (expected range = 0.809–0.896)
3118 measured reflections
1712 independent reflections
1415 reflections with I > 2σ(I)
R_int = 0.049
2 standard reflections frequency: 120 min intensity decay: 0.4%

Refinement

R[F² > 2σ(F²)] = 0.033
wR(F²) = 0.095
S = 1.06
1712 reflections
146 parameters
Δρ_max = 0.73 e Å⁻³
Δρ_min = −1.18 e Å⁻³

Table 1
Selected bond lengths (Å)

V1—O4	1.672 (3)
V1—O6	1.688 (3)
V1—O2	1.704 (3)
V1—O1	1.806 (3)
V2—O9	1.643 (3)
V2—O10	1.694 (3)
V2—O7	1.717 (3)
V2—O5	1.848 (3)
V3—O8	1.642 (3)
V3—O3	1.655 (3)
V3—O1ⁱ	1.757 (3)
V3—O5ⁱⁱ	1.827 (3)
Symmetry codes: (i) -x, -y, -z+1; (ii) -x, -y-1, -z.

Data collection: CAD-4 EXPRESS (Duisenberg, 1992 ; Macíček & Yordanov, 1992 ); cell refinement: CAD-4 EXPRESS; data reduction: MolEN (Fair, 1990 ); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 1998 ); software used to prepare material for publication: SHELXL97.

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S160053680800322X/br2067sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S160053680800322X/br2067Isup2.hkl

checkCIF report

Comment top

The synthesis and structural characterization of new materials characterized by mixed open frameworks of MO₆ octahedra and XO₄ tetrahedra sharing edges and/or corners delimiting tunnels where cations are located and study of their properties are an active area of research in solid state chemistry, due to their interest in the fields of catalysis, ion exchange and ion conduction. In the system MgO–V₂O₅, a small number of compounds have been structurally characterized now, namely, Mg₂V₂O₇ (Gopal & Calvo, 1974), MgV₂O₆ (Ng & Calvo, 1972), Mg₃(VO₄)₂ (Krishnamachari & Calvo, 1971) and MgV₃O₈ (Saux & Galy, 1973). The same is true for the inclusion of alkali elements into this system, to our knowledge, only the structure of NaMg₄(VO₄)₃ (Murashova et al., 1988a), LiMg(VO₄) (Barbier, 1988), K₂MgV₂O₇ (Murashova et al., 1988b) and Na₆Mg₂(V₄O₁₅)(Mitiaev et al., 2004) have been determined. Extending our investigation a new magnesium trivanadate, NaMg₂V₃O₁₀ has been prepared by a conventional solid-state reaction and characterized by single-crystal X-ray diffraction. The structure of NaMg₂V₃O₁₀ consists of MgO₆ octahedra and VO₄ tetrahedral sharing corners and edges to form a three-dimensional framework. The Na⁺ are located in the tunnels space. A projection of the structure, showing the displacement ellipsoids, is presented in Fig 1. The Mg₂ (V₃O₁₀)]^- anions are built up from edge sharing MgO₆ octahedra to form [Mg₄O₁₈] units, which are linked to each other by trivanadate groups (V₃O₁₀). The Mg₄O₁₈ basal unit is built up by the edge linkages of four MgO₆ octahedra, Such a unit is formed by two kind of divalent-metal cations, one labeled as Mg1 share edge with another labelled Mg2 forming Mg₂O₁₀ dimers, repetition of the dimers ensured by centres of symmetry on the shared edge between two Mg1O₆ leads to the formation of Mg₄O₁₀ unit. Each trivanadate is formed by three tetrahedra, V1O₄, V2O₄ and V3O₄, interconnected through the corners O1 and O5. The V1, V2 and V3 tetrahedron shares the eight remaining O-atom corners with five Mg₄O₁₈ units forming ribbons running along the [011] direction (Fig. 2). The projection of the structure along the [001] show that the trivanadate groups and the MgO₆ polyhedra form six side tunnels running along [001] in which Na⁺ cations are located (Fig3). The geometry of the VO₄ tetrahedra is close to that generally observed. Two groups of distances can be distinguished. The V—O bonds corresponding to the two V—O—V bridges of the V₃O₁₀ groups are the largest one. Consequently, the two external tetrahedra V1 and V2 present one long V—O distance and three smaller ones. Whereas the cental V3 tetrahedron has two long and two shorter. The Mg atoms are surrounded by six O atoms and the sodium cations exhibit a sixfold coordination. The bond valence sums determined using the Brown & Altermatt (1985) formulation are in the agreement with the formal charges deduced from the chemical formula: 5.088, 5.020, 5.100 from V1 to V3 respectively; 0.858 for Na; 2,188, 1.960 for Mg1 and Mg2 respectively, and ranging from 1.928 to 2.197 for the oxygen atoms.

Related literature top

For related literature, see: Barbier (1988); Brown & Altermatt (1985); Gopal & Calvo (1974); Krishnamachari & Calvo (1971); Mitiaev et al. (2004); Murashova et al. (1988a, 1988b); Ng & Calvo (1972); Saux & Galy (1973).

Experimental top

The starting materials for synthesizing NaMg₂V₃O₁₀ were NaVO₃, V₂O₅ and Mg(NO₃)₂.7H2O. The stoichiometric mixture was heated in air, in a platinum crucible, after a progressive heating to 873 K, the mixture was heated at 1173 K, cooled to 773 K at rate of 5 K.hr-1 and then to room temperature. The parallelepiped crystals obtained after washing with hot water were brown. Quantitative analysis of these crystals, by electron microscope probe, revealed that they contain sodium, magnesium and vanadium.

Computing details top

Data collection: CAD-4 EXPRESS (Duisenberg, 1992; Macíček & Yordanov, 1992); cell refinement: CAD-4 EXPRESS (Duisenberg, 1992; Macíček & Yordanov, 1992); data reduction: MolEN (Fair, 1990); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

	Fig. 1. A projection of NaMg₂V₃O₁₀, showing the displacement ellipsoids.
	Fig. 2. View showing the ribbons running along the [011] direction.
	Fig. 3. Projection of the structure of NaMg₂V₃O₁₀ along [001] direction.

Sodium dimagnesium trivanadate top

Crystal data top

NaMg₂V₃O₁₀	Z = 2
M_r = 384.42	F(000) = 368
Triclinic, P1	D_x = 3.171 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 6.7369 (1) Å	Cell parameters from 25 reflections
b = 6.7553 (1) Å	θ = 1.5–27.0°
c = 9.6222 (1) Å	µ = 3.66 mm⁻¹
α = 104.325 (1)°	T = 293 K
β = 100.604 (1)°	Parallelepiped, brown
γ = 101.696 (1)°	0.4 × 0.07 × 0.03 mm
V = 402.63 (1) Å³

Data collection top

Enraf–Nonius CAD-4 diffractometer	1415 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	R_int = 0.049
Graphite monochromator	θ_max = 27.0°, θ_min = 2.3°
ω/2θ scans	h = −8→8
Absorption correction: ψ scan (North et al., 1968)	k = −8→8
T_min = 0.871, T_max = 0.965	l = −12→12
3118 measured reflections	2 standard reflections every 120 min
1712 independent reflections	intensity decay: 0.4%

Refinement top

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)] = 0.033	w = 1/[σ²(F_o²) + (0.0426P)² + 0.4338P] where P = (F_o² + 2F_c²)/3
wR(F²) = 0.095	(Δ/σ)_max < 0.001
S = 1.06	Δρ_max = 0.73 e Å⁻³
1712 reflections	Δρ_min = −1.18 e Å⁻³
146 parameters	Extinction correction: SHELXL97 (Sheldrick, 2008), Fc^*=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4
0 restraints	Extinction coefficient: 0.003 (2)

Crystal data top

NaMg₂V₃O₁₀	γ = 101.696 (1)°
M_r = 384.42	V = 402.63 (1) Å³
Triclinic, P1	Z = 2
a = 6.7369 (1) Å	Mo Kα radiation
b = 6.7553 (1) Å	µ = 3.66 mm⁻¹
c = 9.6222 (1) Å	T = 293 K
α = 104.325 (1)°	0.4 × 0.07 × 0.03 mm
β = 100.604 (1)°

Data collection top

Enraf–Nonius CAD-4 diffractometer	1415 reflections with I > 2σ(I)
Absorption correction: ψ scan (North et al., 1968)	R_int = 0.049
T_min = 0.871, T_max = 0.965	2 standard reflections every 120 min
3118 measured reflections	intensity decay: 0.4%
1712 independent reflections

Refinement top

R[F² > 2σ(F²)] = 0.033	146 parameters
wR(F²) = 0.095	0 restraints
S = 1.06	Δρ_max = 0.73 e Å⁻³
1712 reflections	Δρ_min = −1.18 e Å⁻³

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

	x	y	z	U_iso*/U_eq
V1	0.11192 (10)	0.04819 (10)	0.30906 (7)	0.00700 (18)
V2	0.23427 (10)	−0.33675 (10)	−0.04757 (7)	0.00795 (18)
V3	−0.22756 (10)	−0.42610 (10)	0.38667 (7)	0.00858 (19)
Mg1	−0.20718 (18)	−0.18407 (18)	−0.01815 (13)	0.0043 (3)
Mg2	−0.76019 (19)	−0.4331 (2)	0.29306 (14)	0.0098 (3)
Na	0.6408 (4)	0.0239 (3)	0.3640 (3)	0.0416 (6)
O1	0.0677 (4)	0.1930 (5)	0.4803 (3)	0.0156 (6)
O2	0.2277 (4)	0.2383 (4)	0.2402 (3)	0.0118 (6)
O3	−0.2797 (5)	−0.6006 (5)	0.4778 (3)	0.0172 (6)
O4	−0.1271 (4)	−0.0914 (5)	0.2063 (3)	0.0143 (6)
O5	0.0972 (4)	−0.4778 (4)	−0.2430 (3)	0.0118 (6)
O6	0.2690 (5)	−0.1090 (5)	0.3424 (3)	0.0163 (6)
O7	0.2151 (4)	−0.5009 (4)	0.0627 (3)	0.0130 (6)
O8	−0.4437 (4)	−0.3693 (5)	0.3187 (3)	0.0159 (6)
O9	0.4808 (5)	−0.2374 (5)	−0.0409 (3)	0.0188 (7)
O10	0.1292 (4)	−0.1322 (4)	0.0086 (3)	0.0116 (5)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
V1	0.0082 (3)	0.0063 (3)	0.0071 (3)	0.0016 (2)	0.0016 (2)	0.0034 (2)
V2	0.0112 (3)	0.0072 (3)	0.0066 (3)	0.0036 (2)	0.0021 (2)	0.0032 (2)
V3	0.0110 (3)	0.0083 (3)	0.0078 (3)	0.0031 (2)	0.0034 (2)	0.0033 (2)
Mg1	0.0063 (6)	0.0029 (5)	0.0037 (6)	0.0009 (4)	0.0012 (4)	0.0014 (4)
Mg2	0.0104 (7)	0.0096 (6)	0.0093 (6)	0.0022 (5)	0.0016 (5)	0.0033 (5)
Na	0.0371 (13)	0.0245 (11)	0.0622 (16)	0.0043 (9)	0.0221 (11)	0.0066 (11)
O1	0.0171 (15)	0.0156 (14)	0.0122 (14)	0.0003 (11)	0.0059 (11)	0.0020 (11)
O2	0.0143 (14)	0.0099 (13)	0.0114 (13)	0.0023 (10)	0.0029 (11)	0.0045 (11)
O3	0.0259 (16)	0.0128 (14)	0.0188 (15)	0.0092 (12)	0.0101 (13)	0.0087 (12)
O4	0.0123 (14)	0.0150 (14)	0.0136 (14)	−0.0011 (11)	0.0024 (11)	0.0053 (11)
O5	0.0140 (14)	0.0133 (14)	0.0101 (13)	0.0054 (11)	0.0050 (11)	0.0043 (11)
O6	0.0184 (15)	0.0149 (14)	0.0198 (15)	0.0075 (11)	0.0059 (12)	0.0092 (12)
O7	0.0150 (14)	0.0129 (14)	0.0124 (13)	0.0059 (11)	0.0014 (11)	0.0057 (11)
O8	0.0124 (14)	0.0175 (14)	0.0190 (15)	0.0051 (11)	0.0034 (11)	0.0069 (12)
O9	0.0173 (16)	0.0167 (15)	0.0241 (17)	0.0046 (12)	0.0073 (13)	0.0074 (13)
O10	0.0127 (13)	0.0097 (13)	0.0142 (13)	0.0038 (10)	0.0041 (11)	0.0054 (11)

Geometric parameters (Å, º) top

V1—O4	1.672 (3)	Mg2—Mg1ⁱ	3.1470 (17)
V1—O6	1.688 (3)	Mg2—V2ⁱ	3.4044 (14)
V1—O2	1.704 (3)	Mg2—Na^iv	3.492 (3)
V1—O1	1.806 (3)	Mg2—Naⁱⁱ	3.575 (3)
V2—O9	1.643 (3)	Na—O3^viii	2.404 (4)
V2—O10	1.694 (3)	Na—O6	2.435 (4)
V2—O7	1.717 (3)	Na—O4^ix	2.477 (4)
V2—O5	1.848 (3)	Na—O8^ix	2.509 (4)
V2—Mg1	3.3760 (14)	Na—O6^x	2.665 (4)
V2—Mg2ⁱ	3.4044 (14)	Na—O1^ix	2.771 (4)
V3—O8	1.642 (3)	Na—V1^ix	3.291 (2)
V3—O3	1.655 (3)	Na—V3^ix	3.380 (2)
V3—O1ⁱⁱ	1.757 (3)	Na—V1^x	3.474 (3)
V3—O5ⁱⁱⁱ	1.827 (3)	Na—Mg2^ix	3.492 (3)
V3—Na^iv	3.380 (2)	Na—Na^x	3.543 (5)
V3—Na^v	3.582 (2)	O1—V3ⁱⁱ	1.757 (3)
Mg1—O9^iv	2.020 (3)	O1—Na^iv	2.771 (4)
Mg1—O4	2.028 (3)	O2—Mg1^vi	2.049 (3)
Mg1—O2^vi	2.049 (3)	O2—Mg2^viii	2.132 (3)
Mg1—O7ⁱⁱⁱ	2.051 (3)	O3—Mg2^vii	2.120 (3)
Mg1—O10^vi	2.069 (3)	O3—Na^v	2.404 (4)
Mg1—O10	2.178 (3)	O4—Na^iv	2.477 (4)
Mg1—Mg2ⁱ	3.1470 (17)	O5—V3ⁱⁱⁱ	1.827 (3)
Mg1—Mg1^vi	3.240 (2)	O5—Mg2ⁱ	2.156 (3)
Mg1—V1^vi	3.2839 (13)	O6—Mg2^ix	2.082 (3)
Mg2—O8	2.043 (3)	O6—Na^x	2.665 (4)
Mg2—O6^iv	2.082 (3)	O7—Mg1ⁱⁱⁱ	2.051 (3)
Mg2—O7^iv	2.117 (3)	O7—Mg2^ix	2.117 (3)
Mg2—O3^vii	2.120 (3)	O8—Na^iv	2.509 (4)
Mg2—O2^v	2.132 (3)	O9—Mg1^ix	2.020 (3)
Mg2—O5ⁱ	2.156 (3)	O10—Mg1^vi	2.069 (3)

O4—V1—O6	112.10 (15)	O10^vi—Mg1—O10	80.59 (12)
O4—V1—O2	113.54 (14)	O8—Mg2—O6^iv	88.16 (13)
O6—V1—O2	111.46 (14)	O8—Mg2—O7^iv	86.61 (12)
O4—V1—O1	104.42 (14)	O6^iv—Mg2—O7^iv	98.45 (12)
O6—V1—O1	110.07 (14)	O8—Mg2—O3^vii	90.45 (13)
O2—V1—O1	104.72 (14)	O6^iv—Mg2—O3^vii	88.10 (13)
O9—V2—O10	107.80 (14)	O7^iv—Mg2—O3^vii	172.73 (13)
O9—V2—O7	110.35 (15)	O8—Mg2—O2^v	88.64 (13)
O10—V2—O7	111.25 (14)	O6^iv—Mg2—O2^v	176.66 (13)
O9—V2—O5	107.91 (14)	O7^iv—Mg2—O2^v	80.40 (12)
O10—V2—O5	107.49 (13)	O3^vii—Mg2—O2^v	92.89 (12)
O7—V2—O5	111.87 (13)	O8—Mg2—O5ⁱ	173.94 (13)
O8—V3—O3	109.72 (15)	O6^iv—Mg2—O5ⁱ	95.28 (12)
O8—V3—O1ⁱⁱ	106.39 (15)	O7^iv—Mg2—O5ⁱ	87.95 (11)
O3—V3—O1ⁱⁱ	106.04 (14)	O3^vii—Mg2—O5ⁱ	94.64 (12)
O8—V3—O5ⁱⁱⁱ	111.97 (14)	O2^v—Mg2—O5ⁱ	87.83 (11)
O3—V3—O5ⁱⁱⁱ	111.02 (14)	O3^viii—Na—O6	105.48 (13)
O1ⁱⁱ—V3—O5ⁱⁱⁱ	111.43 (13)	O3^viii—Na—O4^ix	115.05 (13)
O9^iv—Mg1—O4	96.22 (13)	O6—Na—O4^ix	131.92 (14)
O9^iv—Mg1—O2^vi	94.40 (13)	O3^viii—Na—O8^ix	163.72 (16)
O4—Mg1—O2^vi	168.05 (13)	O6—Na—O8^ix	70.96 (12)
O9^iv—Mg1—O7ⁱⁱⁱ	93.58 (13)	O4^ix—Na—O8^ix	76.24 (12)
O4—Mg1—O7ⁱⁱⁱ	100.80 (12)	O3^viii—Na—O6^x	70.20 (12)
O2^vi—Mg1—O7ⁱⁱⁱ	83.95 (12)	O6—Na—O6^x	92.11 (12)
O9^iv—Mg1—O10^vi	100.55 (13)	O4^ix—Na—O6^x	124.66 (14)
O4—Mg1—O10^vi	88.02 (12)	O8^ix—Na—O6^x	93.84 (13)
O2^vi—Mg1—O10^vi	84.66 (12)	O3^viii—Na—O1^ix	69.27 (11)
O7ⁱⁱⁱ—Mg1—O10^vi	162.47 (13)	O6—Na—O1^ix	162.23 (15)
O9^iv—Mg1—O10	178.74 (12)	O4^ix—Na—O1^ix	62.91 (10)
O4—Mg1—O10	83.25 (12)	O8^ix—Na—O1^ix	109.07 (13)
O2^vi—Mg1—O10	86.24 (12)	O6^x—Na—O1^ix	70.12 (11)
O7ⁱⁱⁱ—Mg1—O10	85.40 (11)

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

Experimental details

Crystal data
Chemical formula	NaMg₂V₃O₁₀
M_r	384.42
Crystal system, space group	Triclinic, P1
Temperature (K)	293
a, b, c (Å)	6.7369 (1), 6.7553 (1), 9.6222 (1)
α, β, γ (°)	104.325 (1), 100.604 (1), 101.696 (1)
V (Å³)	402.63 (1)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	3.66
Crystal size (mm)	0.4 × 0.07 × 0.03

Data collection
Diffractometer	Enraf–Nonius CAD-4 diffractometer
Absorption correction	ψ scan (North et al., 1968)
T_min, T_max	0.871, 0.965
No. of measured, independent and observed [I > 2σ(I)] reflections	3118, 1712, 1415
R_int	0.049
(sin θ/λ)_max (Å⁻¹)	0.638

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.033, 0.095, 1.06
No. of reflections	1712
No. of parameters	146
Δρ_max, Δρ_min (e Å⁻³)	0.73, −1.18

Computer programs: CAD-4 EXPRESS (Duisenberg, 1992; Macíček & Yordanov, 1992), MolEN (Fair, 1990), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg, 1998).

Selected bond lengths (Å) top

V1—O4	1.672 (3)	V2—O7	1.717 (3)
V1—O6	1.688 (3)	V2—O5	1.848 (3)
V1—O2	1.704 (3)	V3—O8	1.642 (3)
V1—O1	1.806 (3)	V3—O3	1.655 (3)
V2—O9	1.643 (3)	V3—O1ⁱ	1.757 (3)
V2—O10	1.694 (3)	V3—O5ⁱⁱ	1.827 (3)

Symmetry codes: (i) −x, −y, −z+1; (ii) −x, −y−1, −z.

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