Aqua­(2,2′-bipyridine)trifluorido­chromium(III) dihydrate

Liu, H.-X.

doi:10.1107/S1600536809031808

metal-organic compounds

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ISSN: 2056-9890

Volume 65| Part 9| September 2009| Page m1093

doi:10.1107/S1600536809031808

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Aqua(2,2′-bipyridine)trifluoridochromium(III) dihydrate

Hai-Xing Liu ^a ^*

^aMicroscale Science Institute, Weifang University, Weifang 261061, People's Republic of China, and Department of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, People's Republic of China
^*Correspondence e-mail: wj-crystal@163.com

(Received 6 August 2009; accepted 12 August 2009; online 19 August 2009)

The title compound, [CrF₃(C₁₀H₈N₂)(H₂O)]·2H₂O, was prepared by the reaction of CrF₃ and 2,2′-bipyridine under hydrous conditions. The metal centre is coordinated in a distorted octahedral mode by two N atoms from the organic ligand, three F atoms and one O atom of a water molecule. . The crystal packing is stabilized by O—H⋯O and O—H⋯F hydrogen-bonding contacts, which form a one-dimensional belt extending parallel to (100).

Related literature

For anion structures, see: Kumar et al. (2007 ); Krishnan et al. (2007 ); Wu et al. (2007 ); Dong et al. (2005 ). For related structures, see: Timco et al. (2005 ); Larsen et al. (2003 ); Ochsenbein et al. (2008 ).

Experimental

Crystal data

[CrF₃(C₁₀H₈N₂)(H₂O)]·2H₂O
M_r = 319.23
Monoclinic, P 2₁ /c
a = 9.0100 (18) Å
b = 7.4170 (15) Å
c = 20.759 (6) Å
β = 112.35 (3)°
V = 1283.1 (5) Å³
Z = 4
Mo Kα radiation
μ = 0.93 mm⁻¹
T = 293 K
0.24 × 0.18 × 0.17 mm

Data collection

Bruker SMART CCD area-detector diffractometer
Absorption correction: none
6478 measured reflections
2257 independent reflections
1916 reflections with I > 2σ(I)
R_int = 0.023

Refinement

R[F² > 2σ(F²)] = 0.040
wR(F²) = 0.129
S = 1.12
2257 reflections
175 parameters
3 restraints
H-atom parameters constrained
Δρ_max = 0.52 e Å⁻³
Δρ_min = −0.56 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1W—H2W1⋯F1	0.85	2.22	2.699 (3)	116
O1W—H2W1⋯F2ⁱ	0.85	2.02	2.567 (3)	121
O1W—H2W1⋯F2ⁱ	0.85	2.02	2.567 (3)	121
O1W—H1W1⋯F1ⁱⁱ	0.85	1.97	2.550 (3)	125
O2W—H1W2⋯F3ⁱⁱ	0.85	2.10	2.664 (4)	124
O2W—H2W2⋯O3Wⁱⁱⁱ	0.85	2.33	2.730 (5)	110
O3W—H2W3⋯F2^iv	0.80	1.98	2.767 (3)	171
O3W—H1W3⋯O3W^v	0.84	2.18	2.748 (7)	125
Symmetry codes: (i) $[-x, y-{\script{1\over 2}}, -z+{\script{1\over 2}}]$ ; (ii) $[-x, y+{\script{1\over 2}}, -z+{\script{1\over 2}}]$ ; (iii) x-1, y, z; (iv) $[-x+1, y-{\script{1\over 2}}, -z+{\script{1\over 2}}]$ ; (v) -x+2, -y, -z.

Data collection: SMART (Bruker, 1997 ); cell refinement: SAINT (Bruker, 1997); 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); software used to prepare material for publication: SHELXTL.

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809031808/br2114sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536809031808/br2114Isup2.hkl

checkCIF report

Comment top

In recent, the aspect of anion attracts much research interesting in coordination chemistry, like X^-, NO₃^-(Kumar et al., 2007), BF₄^-, ClO₄^-(Krishnan et al., 2007), SO₃^2-(Wu et al., 2007). The anion components facilely either coordinate to metal atoms or fill the vacancy of Metal-organic frameworks, and intensively influence the supramolecular framework by hydrogen bonding and electrostatic interactions. But the study of F^- anion is still deficient. Because the HF strong acid easily attacks the glass surface and creates SiF₆^2- in the synthetical progress. Here we describe the synthesis and structure of the title Cr compound coordinating with F atom.

The title structure (Fig. 1) was build up of one Cr atom, one 2,2,-bipyridine ligand, three coordination F atoms, one coordination water molecule and two free water molecules. Cr atom is coordinated with two N atoms from 2,2'-bipyridine ligand, three F atoms, one water molecule, presenting a distorted octahedron geometry. The mean Cr—N, Cr—O and Cr—F bond lengths are similar to the reported (Timco et al., 2005, Larsen et al., 2003 & Ochsenbein et al., 2008). The torsion angles of C1—N1—Cr1—O1w, C10—N2—Cr1—F3 are 4.13 (2) and -4.25 (2)°,respectively.

The free water molecules link each other by intermolecular O—H···O hydrogen bonds. And F atoms contact with water molecules via intermolecular O—H···F hydrogen bonds (Table 2). The hydrogen-bonding interactions display as the one-dimensional belt linking the the crystal packing as shown in Fig. 2.

Related literature top

For anion structures, see: Kumar et al. (2007); Krishnan et al. (2007); Wu et al. (2007); Dong et al. (2005). For related structures, see: Timco et al. (2005); Larsen et al. (2003); Ochsenbein et al. (2008).

Experimental top

All commercially obtained reagent-grade chemicals were used without further purification. The novelty Cr(OH)₃ was prepared by mixture CrCl₃ 6H₂O (5.33 g, 20 mmol) with NaOH (2.40 g, 60 mmol) in water solution. After filtered and washed with water, Cr(OH)₃ was added to hydrofluoric acid (1.20 g, 60 mmol). The stirring did not stop until the solid dissolved completely. The CrF₃ solution was obtained after increasing the pH value from 5 to 7. Ten drops of prepared CrF₃ solution were added in the solution of 2,2'-bipyridine (0.48 g, 3 mmol) in water and methanol (3:1 v/v, 40 ml). The resulting solution was refluxed for 2 h and filtered. The brown prism crystals were collected, after cooling and filtering (yield 1.10 g).

Computing details top

Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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 (Sheldrick, 2008).

Figures top

	Fig. 1. The molecular structure of the title compound with the atom-labeling scheme. Displacement ellipsoids are drawn at the 30% probability level.
	Fig. 2. The packing view of the molecules of (I) along the crystallographic b direction.

Aqua(2,2'-bipyridine)trifluoridochromium(III) dihydrate top

Crystal data top

[CrF₃(C₁₀H₈N₂)(H₂O)]·2H₂O	F(000) = 652
M_r = 319.23	D_x = 1.653 Mg m⁻³
Monoclinic, P2₁/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 1024 reflections
a = 9.0100 (18) Å	θ = 2.4–25.0°
b = 7.4170 (15) Å	µ = 0.93 mm⁻¹
c = 20.759 (6) Å	T = 293 K
β = 112.35 (3)°	Prism, brown
V = 1283.1 (5) Å³	0.24 × 0.18 × 0.17 mm
Z = 4

Data collection top

Bruker SMART CCD area-detector diffractometer	1916 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	R_int = 0.023
Graphite monochromator	θ_max = 25.0°, θ_min = 2.4°
ϕ and ω scans	h = −10→10
6478 measured reflections	k = −8→8
2257 independent reflections	l = −21→24

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)] = 0.040	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.129	H-atom parameters constrained
S = 1.12	w = 1/[σ²(F_o²) + (0.0755P)² + 0.6391P] where P = (F_o² + 2F_c²)/3
2257 reflections	(Δ/σ)_max < 0.001
175 parameters	Δρ_max = 0.52 e Å⁻³
3 restraints	Δρ_min = −0.56 e Å⁻³

Crystal data top

[CrF₃(C₁₀H₈N₂)(H₂O)]·2H₂O	V = 1283.1 (5) Å³
M_r = 319.23	Z = 4
Monoclinic, P2₁/c	Mo Kα radiation
a = 9.0100 (18) Å	µ = 0.93 mm⁻¹
b = 7.4170 (15) Å	T = 293 K
c = 20.759 (6) Å	0.24 × 0.18 × 0.17 mm
β = 112.35 (3)°

Data collection top

Bruker SMART CCD area-detector diffractometer	1916 reflections with I > 2σ(I)
6478 measured reflections	R_int = 0.023
2257 independent reflections

Refinement top

R[F² > 2σ(F²)] = 0.040	3 restraints
wR(F²) = 0.129	H-atom parameters constrained
S = 1.12	Δρ_max = 0.52 e Å⁻³
2257 reflections	Δρ_min = −0.56 e Å⁻³
175 parameters

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
Cr1	0.15638 (5)	0.28271 (7)	0.32953 (2)	0.0283 (2)
F1	0.2014 (2)	0.0442 (2)	0.31271 (9)	0.0393 (5)
F2	0.1128 (2)	0.5267 (2)	0.34286 (9)	0.0436 (5)
F3	−0.0083 (2)	0.2083 (3)	0.35635 (12)	0.0521 (6)
N1	0.3615 (3)	0.3591 (4)	0.31451 (13)	0.0331 (6)
N2	0.3252 (3)	0.2663 (3)	0.42877 (13)	0.0318 (6)
C1	0.3689 (4)	0.4133 (5)	0.25417 (18)	0.0453 (8)
H1A	0.2741	0.4299	0.2157	0.054*
C2	0.5145 (5)	0.4453 (5)	0.2477 (2)	0.0540 (10)
H2A	0.5168	0.4829	0.2054	0.065*
C3	0.6529 (5)	0.4212 (6)	0.3035 (2)	0.0579 (10)
H3A	0.7513	0.4406	0.2997	0.069*
C4	0.6469 (4)	0.3678 (6)	0.3661 (2)	0.0533 (10)
H4A	0.7410	0.3513	0.4050	0.064*
C5	0.4997 (4)	0.3393 (4)	0.37029 (17)	0.0358 (7)
C6	0.4791 (4)	0.2890 (4)	0.43569 (17)	0.0353 (7)
C7	0.6048 (5)	0.2693 (5)	0.4996 (2)	0.0506 (10)
H7A	0.7105	0.2842	0.5037	0.061*
C8	0.5698 (6)	0.2272 (6)	0.5569 (2)	0.0613 (12)
H8A	0.6521	0.2127	0.6003	0.074*
C9	0.4128 (5)	0.2068 (5)	0.54970 (18)	0.0559 (11)
H9A	0.3875	0.1802	0.5881	0.067*
C10	0.2933 (5)	0.2264 (5)	0.48461 (18)	0.0432 (8)
H10A	0.1870	0.2113	0.4796	0.052*
O1W	0.0184 (3)	0.3056 (3)	0.22962 (11)	0.0363 (5)
H1W1	−0.0536	0.3443	0.1923	0.044*
H2W1	0.0476	0.2023	0.2211	0.044*
O2W	0.0891 (5)	0.4622 (5)	0.06932 (16)	0.0883 (11)
H1W2	0.0245	0.4742	0.0901	0.106*
H2W2	0.1487	0.3719	0.0871	0.106*
O3W	0.9992 (4)	0.1082 (5)	0.05359 (17)	0.0790 (10)
H2W3	0.9750	0.0764	0.0850	0.095*
H1W3	1.0333	0.0066	0.0477	0.095*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cr1	0.0252 (3)	0.0273 (3)	0.0288 (3)	0.00016 (18)	0.0059 (2)	0.00170 (18)
F1	0.0344 (10)	0.0296 (10)	0.0462 (10)	0.0000 (8)	0.0068 (8)	−0.0007 (8)
F2	0.0530 (12)	0.0329 (10)	0.0371 (10)	0.0091 (9)	0.0084 (9)	−0.0017 (8)
F3	0.0343 (11)	0.0647 (15)	0.0608 (13)	−0.0003 (10)	0.0221 (10)	0.0137 (10)
N1	0.0326 (14)	0.0322 (14)	0.0334 (14)	−0.0042 (11)	0.0113 (11)	0.0016 (11)
N2	0.0322 (14)	0.0298 (14)	0.0288 (14)	−0.0015 (11)	0.0063 (11)	0.0028 (10)
C1	0.048 (2)	0.046 (2)	0.0418 (19)	−0.0066 (17)	0.0172 (16)	0.0051 (15)
C2	0.068 (3)	0.050 (2)	0.059 (2)	−0.0085 (19)	0.042 (2)	0.0035 (18)
C3	0.043 (2)	0.066 (3)	0.072 (3)	−0.0106 (19)	0.030 (2)	−0.001 (2)
C4	0.0329 (18)	0.063 (2)	0.062 (2)	−0.0048 (18)	0.0159 (17)	0.000 (2)
C5	0.0315 (16)	0.0313 (16)	0.0425 (18)	−0.0038 (13)	0.0116 (14)	−0.0021 (14)
C6	0.0303 (17)	0.0296 (17)	0.0384 (18)	−0.0028 (13)	0.0046 (14)	−0.0014 (13)
C7	0.0354 (19)	0.052 (2)	0.046 (2)	−0.0042 (16)	−0.0048 (17)	0.0025 (16)
C8	0.062 (3)	0.062 (3)	0.037 (2)	−0.003 (2)	−0.0079 (19)	0.0087 (17)
C9	0.072 (3)	0.057 (3)	0.0294 (19)	−0.006 (2)	0.0090 (18)	0.0086 (16)
C10	0.045 (2)	0.045 (2)	0.0367 (19)	−0.0040 (16)	0.0128 (16)	0.0048 (15)
O1W	0.0351 (12)	0.0310 (11)	0.0305 (11)	0.0072 (9)	−0.0013 (9)	−0.0002 (9)
O2W	0.124 (3)	0.079 (2)	0.081 (2)	0.037 (2)	0.060 (2)	0.0043 (18)
O3W	0.096 (2)	0.083 (2)	0.079 (2)	−0.002 (2)	0.0559 (19)	0.0067 (19)

Geometric parameters (Å, º) top

Cr1—F3	1.856 (2)	C4—H4A	0.9300
Cr1—F1	1.8769 (18)	C5—C6	1.486 (5)
Cr1—F2	1.8942 (19)	C6—C7	1.386 (5)
Cr1—O1W	1.979 (2)	C7—C8	1.379 (6)
Cr1—N2	2.047 (3)	C7—H7A	0.9300
Cr1—N1	2.067 (3)	C8—C9	1.373 (6)
N1—C1	1.341 (4)	C8—H8A	0.9300
N1—C5	1.348 (4)	C9—C10	1.378 (5)
N2—C10	1.329 (4)	C9—H9A	0.9300
N2—C6	1.350 (4)	C10—H10A	0.9300
C1—C2	1.388 (5)	O1W—H1W1	0.8498
C1—H1A	0.9300	O1W—H2W1	0.8500
C2—C3	1.353 (6)	O2W—H1W2	0.8500
C2—H2A	0.9300	O2W—H2W2	0.8500
C3—C4	1.378 (6)	O3W—H2W3	0.7978
C3—H3A	0.9300	O3W—H1W3	0.840 (10)
C4—C5	1.378 (5)

F3—Cr1—F1	91.69 (9)	C2—C3—H3A	120.3
F3—Cr1—F2	90.37 (10)	C4—C3—H3A	120.3
F1—Cr1—F2	177.37 (8)	C3—C4—C5	119.1 (4)
F3—Cr1—O1W	94.86 (10)	C3—C4—H4A	120.4
F1—Cr1—O1W	88.84 (8)	C5—C4—H4A	120.4
F2—Cr1—O1W	89.35 (8)	N1—C5—C4	121.7 (3)
F3—Cr1—N2	93.05 (10)	N1—C5—C6	114.7 (3)
F1—Cr1—N2	90.05 (9)	C4—C5—C6	123.6 (3)
F2—Cr1—N2	91.48 (9)	N2—C6—C7	121.4 (3)
O1W—Cr1—N2	172.04 (10)	N2—C6—C5	114.5 (3)
F3—Cr1—N1	171.69 (10)	C7—C6—C5	124.1 (3)
F1—Cr1—N1	87.80 (9)	C8—C7—C6	118.6 (4)
F2—Cr1—N1	90.39 (10)	C8—C7—H7A	120.7
O1W—Cr1—N1	93.42 (10)	C6—C7—H7A	120.7
N2—Cr1—N1	78.66 (11)	C9—C8—C7	119.7 (4)
C1—N1—C5	118.5 (3)	C9—C8—H8A	120.2
C1—N1—Cr1	126.0 (2)	C7—C8—H8A	120.2
C5—N1—Cr1	115.3 (2)	C8—C9—C10	118.9 (4)
C10—N2—C6	119.3 (3)	C8—C9—H9A	120.5
C10—N2—Cr1	124.5 (2)	C10—C9—H9A	120.5
C6—N2—Cr1	116.1 (2)	N2—C10—C9	122.1 (4)
N1—C1—C2	121.7 (3)	N2—C10—H10A	119.0
N1—C1—H1A	119.1	C9—C10—H10A	119.0
C2—C1—H1A	119.1	Cr1—O1W—H1W1	160.5
C3—C2—C1	119.5 (3)	Cr1—O1W—H2W1	91.2
C3—C2—H2A	120.3	H1W1—O1W—H2W1	107.7
C1—C2—H2A	120.3	H1W2—O2W—H2W2	107.7
C2—C3—C4	119.4 (4)	H2W3—O3W—H1W3	94.7

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1W—H2W1···F1	0.85	2.22	2.699 (3)	116
O1W—H2W1···F2ⁱ	0.85	2.02	2.567 (3)	121
O1W—H2W1···F2ⁱ	0.85	2.02	2.567 (3)	121
O1W—H1W1···F1ⁱⁱ	0.85	1.97	2.550 (3)	125
O2W—H1W2···F3ⁱⁱ	0.85	2.10	2.664 (4)	124
O2W—H2W2···O3Wⁱⁱⁱ	0.85	2.33	2.730 (5)	110
O3W—H2W3···F2^iv	0.80	1.98	2.767 (3)	171
O3W—H2W3···F3^iv	0.80	2.96	3.490 (4)	126
O3W—H1W3···O3W^v	0.84	2.18	2.748	125

Symmetry codes: (i) −x, y−1/2, −z+1/2; (ii) −x, y+1/2, −z+1/2; (iii) x−1, y, z; (iv) −x+1, y−1/2, −z+1/2; (v) −x+2, −y, −z.

Experimental details

Crystal data
Chemical formula	[CrF₃(C₁₀H₈N₂)(H₂O)]·2H₂O
M_r	319.23
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	293
a, b, c (Å)	9.0100 (18), 7.4170 (15), 20.759 (6)
β (°)	112.35 (3)
V (Å³)	1283.1 (5)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	0.93
Crystal size (mm)	0.24 × 0.18 × 0.17

Data collection
Diffractometer	Bruker SMART CCD area-detector diffractometer
Absorption correction	–
No. of measured, independent and observed [I > 2σ(I)] reflections	6478, 2257, 1916
R_int	0.023
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.040, 0.129, 1.12
No. of reflections	2257
No. of parameters	175
No. of restraints	3
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.52, −0.56

Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1W—H2W1···F1	0.85	2.22	2.699 (3)	116.1
O1W—H2W1···F2ⁱ	0.85	2.02	2.567 (3)	121.1
O1W—H2W1···F2ⁱ	0.85	2.02	2.567 (3)	121.1
O1W—H1W1···F1ⁱⁱ	0.85	1.97	2.550 (3)	124.7
O2W—H1W2···F3ⁱⁱ	0.85	2.10	2.664 (4)	123.7
O2W—H2W2···O3Wⁱⁱⁱ	0.85	2.33	2.730 (5)	109.6
O3W—H2W3···F2^iv	0.80	1.98	2.767 (3)	170.8
O3W—H2W3···F3^iv	0.80	2.96	3.490 (4)	126.3
O3W—H1W3···O3W^v	0.840	2.18	2.748	125

Symmetry codes: (i) −x, y−1/2, −z+1/2; (ii) −x, y+1/2, −z+1/2; (iii) x−1, y, z; (iv) −x+1, y−1/2, −z+1/2; (v) −x+2, −y, −z.

References

Bruker (1997). SMART and SAINT . Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
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Volume 65| Part 9| September 2009| Page m1093

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