μ-Oxido-bis­{chlorido[tris­(2-pyridylmethyl)amine]manganese(III)} bis­(hexa­fluorido­phosphate)

Meng, Q.; Wang, L.; Liu, Y.; Pang, Y.

doi:10.1107/S1600536807066512

metal-organic compounds

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ISSN: 2056-9890

Volume 64| Part 1| January 2008| Page m204

https://doi.org/10.1107/S1600536807066512

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RETRACTED ARTICLE

This article has been retracted. To view the retraction notice, click here.

Retracted: μ-Oxido-bis{chlorido[tris(2-pyridylmethyl)amine]manganese(III)} bis(hexafluoridophosphate)

Qingguo Meng,^a ^* Lintong Wang,^a Yanzhen Liu ^a and Yan Pang ^a

^aCollege of Chemistry and Chemical Engineering, Weifang University, Weifang 261061, People's Republic of China
^*Correspondence e-mail: qgmeng_weifang@yahoo.cn

(Received 11 November 2007; accepted 11 December 2007; online 18 December 2007)

In the title compound, [Mn₂O(C₁₈H₁₈ClN₄)₂](PF₆)₂, the Mn atom is chelated by a tetradentate ligand via four N atoms, and further bonded to one chloride ion and one bridging oxide, to give a centrosymmetric cation and distorted octahedral coordination geometry.

Related literature

For related literature, see: Scapin et al. (1997 ); Okabe et al. (2000 ); Serre et al. (2005 ).

Experimental

Crystal data

[Mn₂O(C₁₈H₁₈ClN₄)₂](PF₆)₂
M_r = 1067.45
Triclinic, $[P \overline 1]$
a = 8.5517 (12) Å
b = 11.3128 (18) Å
c = 12.914 (2) Å
α = 115.51 (2)°
β = 107.44 (2)°
γ = 91.49 (2)°
V = 1058.1 (3) Å³
Z = 1
Mo Kα radiation
μ = 0.89 mm⁻¹
T = 293 (2) K
0.28 × 0.22 × 0.18 mm

Data collection

Bruker APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2001 ) T_min = 0.788, T_max = 0.856
9180 measured reflections
4125 independent reflections
3801 reflections with I > 2σ(I)
R_int = 0.021

Refinement

R[F² > 2σ(F²)] = 0.029
wR(F²) = 0.076
S = 1.00
4125 reflections
287 parameters
H-atom parameters constrained
Δρ_max = 0.27 e Å⁻³
Δρ_min = −0.31 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, 1997 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 2001); software used to prepare material for publication: SHELXTL.

Supporting information

Crystal structure: contains datablocks global, I. DOI: https://doi.org/10.1107/S1600536807066512/cf2174sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807066512/cf2174Isup2.hkl

checkCIF report

Comment top

In recent years, many symmetrical polypyridine ligands and their coordination complexes have been synthesized (Scapin et al., 1997; Okabe et al., 2000; Serre et al., 2005). In this paper, we report the structure of the title compound, (I), containing an unsymmetrical polypyridine ligand.

As shown in Fig. 1, the Mn atom is chelated by the tetradentate ligand via four N atoms, and further bonded to one chloride ion and one bridging oxide, to give a centrosymmetric cation and distorted octahedral coordination geometry.

Related literature top

For related literature, see: Scapin et al. (1997); Okabe et al. (2000); Serre et al. (2005).

Experimental top

A mixture of manganese(III) acetate (1 mmol) and tris(2-pyridylmethyl)amine (1 mmol) in 20 ml me thanol was refluxed for two hours. The cooled solution was filtered and the filtrate allowed to evaporate at room temperature. Two days later, pink blocks of (I) were obtained with a yield of 30%. Anal. Calc. for C₃₆H₃₆Cl₂F₁₂Mn₂N₈OP₂: C 40.48, H 3.37, N 10.50%; Found: C 40.42, H 3.38, N 10.44%.

Structure description top

For related literature, see: Scapin et al. (1997); Okabe et al. (2000); Serre et al. (2005).

Computing details top

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 2001); software used to prepare material for publication: SHELXTL (Bruker, 2001).

Figures top

Fig. 1. The molecular structure of (I), drawn with 30% probability displacement ellipsoids for the non-hydrogen atoms.

µ-Oxido-bis{chlorido[tris(2-pyridylmethyl)amine]manganese(III)} bis(hexafluoridophosphate) top

Crystal data top

[Mn₂O(C₁₈H₁₈ClN₄)₂](PF₆)₂	Z = 1
M_r = 1067.45	F(000) = 538
Triclinic, P1	D_x = 1.675 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 8.5517 (12) Å	Cell parameters from 4125 reflections
b = 11.3128 (18) Å	θ = 3.0–26.0°
c = 12.914 (2) Å	µ = 0.89 mm⁻¹
α = 115.51 (2)°	T = 293 K
β = 107.44 (2)°	Block, pink
γ = 91.49 (2)°	0.28 × 0.22 × 0.18 mm
V = 1058.1 (3) Å³

Data collection top

Bruker APEXII CCD diffractometer	4125 independent reflections
Radiation source: fine-focus sealed tube	3801 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.021
φ and ω scans	θ_max = 26.0°, θ_min = 3.0°
Absorption correction: multi-scan (SADABS; Bruker, 2001)	h = −8→10
T_min = 0.788, T_max = 0.856	k = −13→13
9180 measured reflections	l = −15→15

Refinement top

Refinement on F²	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: inferred from neighbouring sites
R[F² > 2σ(F²)] = 0.029	H-atom parameters constrained
wR(F²) = 0.076	w = 1/[σ²(F_o²) + (0.0355P)² + 0.508P] where P = (F_o² + 2F_c²)/3
S = 1.00	(Δ/σ)_max = 0.001
4125 reflections	Δρ_max = 0.27 e Å⁻³
287 parameters	Δρ_min = −0.31 e Å⁻³
0 restraints	Extinction correction: SHELXL97 (Sheldrick, 1997), Fc^*=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4
Primary atom site location: structure-invariant direct methods	Extinction coefficient: 0.0273 (16)

Crystal data top

[Mn₂O(C₁₈H₁₈ClN₄)₂](PF₆)₂	γ = 91.49 (2)°
M_r = 1067.45	V = 1058.1 (3) Å³
Triclinic, P1	Z = 1
a = 8.5517 (12) Å	Mo Kα radiation
b = 11.3128 (18) Å	µ = 0.89 mm⁻¹
c = 12.914 (2) Å	T = 293 K
α = 115.51 (2)°	0.28 × 0.22 × 0.18 mm
β = 107.44 (2)°

Data collection top

Bruker APEXII CCD diffractometer	4125 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2001)	3801 reflections with I > 2σ(I)
T_min = 0.788, T_max = 0.856	R_int = 0.021
9180 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.029	0 restraints
wR(F²) = 0.076	H-atom parameters constrained
S = 1.00	Δρ_max = 0.27 e Å⁻³
4125 reflections	Δρ_min = −0.31 e Å⁻³
287 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
Mn1	1.03744 (3)	0.34680 (2)	0.39271 (2)	0.0591 (3)
C16	0.9137 (3)	0.5294 (2)	0.15470 (19)	0.0579 (6)
H16	0.8144	0.5473	0.1147	0.070*
C15	1.0631 (4)	0.5736 (2)	0.1515 (2)	0.0698 (7)
H15	1.0656	0.6240	0.1109	0.084*
C12	0.7465 (3)	0.1753 (2)	0.14497 (19)	0.0547 (5)
H12A	0.7451	0.2011	0.0822	0.066*
H12B	0.6370	0.1255	0.1212	0.066*
C14	1.2072 (4)	0.5437 (3)	0.2077 (2)	0.0693 (7)
H14	1.3080	0.5723	0.2048	0.083*
C13	1.2008 (3)	0.4705 (2)	0.2687 (2)	0.0586 (5)
H13	1.2989	0.4497	0.3070	0.070*
C9	0.9549 (3)	−0.1237 (2)	0.0608 (2)	0.0591 (6)
H9	0.9333	−0.2116	0.0007	0.071*
C7	1.1344 (3)	0.0604 (2)	0.2403 (2)	0.0506 (5)
H7	1.2376	0.0959	0.3026	0.061*
C10	0.8352 (3)	−0.0448 (2)	0.05877 (19)	0.0503 (5)
H10	0.7312	−0.0789	−0.0027	0.060*
C8	1.1067 (3)	−0.0700 (2)	0.1531 (2)	0.0589 (6)
H8	1.1897	−0.1211	0.1567	0.071*
C6	0.6719 (2)	0.2876 (2)	0.33136 (19)	0.0473 (5)
H6A	0.5632	0.2359	0.2740	0.057*
H6B	0.6564	0.3760	0.3821	0.057*
C3	0.7291 (3)	0.1172 (2)	0.5339 (2)	0.0583 (5)
H3	0.6660	0.0777	0.5619	0.070*
C1	0.9874 (2)	0.18989 (19)	0.53077 (17)	0.0432 (4)
H1	1.1028	0.1989	0.5575	0.052*
C17	0.9146 (3)	0.45733 (19)	0.21901 (16)	0.0442 (4)
C2	0.8988 (3)	0.1304 (2)	0.57405 (19)	0.0509 (5)
H2	0.9530	0.0998	0.6292	0.061*
C4	0.6514 (3)	0.1631 (2)	0.4512 (2)	0.0528 (5)
H4	0.5359	0.1536	0.4227	0.063*
C18	0.7604 (3)	0.41495 (19)	0.23735 (18)	0.0450 (4)
H18A	0.7428	0.4883	0.3054	0.054*
H18B	0.6641	0.3918	0.1647	0.054*
C5	0.7463 (2)	0.22291 (18)	0.41146 (17)	0.0400 (4)
C11	0.8713 (2)	0.08589 (18)	0.14917 (16)	0.0398 (4)
Cl1	1.31393 (6)	0.35086 (5)	0.48444 (5)	0.05319 (15)
F3	0.5826 (2)	0.6606 (2)	0.1912 (2)	0.1062 (6)
F5	0.6040 (2)	0.71991 (18)	0.04862 (16)	0.0904 (5)
F2	0.4876 (2)	0.84879 (19)	0.27957 (14)	0.0865 (5)
F1	0.73275 (18)	0.8610 (2)	0.24889 (16)	0.0976 (6)
F6	0.5112 (2)	0.90781 (15)	0.13872 (16)	0.0796 (4)
F4	0.36039 (17)	0.71075 (14)	0.08069 (13)	0.0705 (4)
N3	1.0566 (2)	0.42831 (16)	0.27464 (15)	0.0455 (4)
N1	0.77789 (18)	0.29832 (15)	0.26229 (14)	0.0395 (3)
N4	1.01895 (19)	0.13923 (15)	0.23967 (14)	0.0415 (3)
N2	0.91299 (18)	0.23567 (15)	0.45101 (14)	0.0386 (3)
O1	1.0000	0.5000	0.5000	0.0399 (4)
P1	0.54877 (7)	0.78428 (6)	0.16552 (5)	0.05074 (15)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Mn1	0.0639 (6)	0.0610 (6)	0.0547 (6)	0.0008 (4)	0.0176 (5)	−0.0068 (4)
C16	0.0825 (17)	0.0485 (11)	0.0445 (11)	0.0145 (11)	0.0199 (11)	0.0241 (9)
C15	0.109 (2)	0.0528 (13)	0.0546 (13)	0.0012 (13)	0.0329 (14)	0.0282 (11)
C12	0.0490 (12)	0.0473 (11)	0.0438 (11)	0.0091 (9)	−0.0021 (9)	0.0119 (9)
C14	0.0823 (18)	0.0680 (15)	0.0664 (15)	−0.0023 (13)	0.0354 (14)	0.0328 (13)
C13	0.0575 (13)	0.0637 (13)	0.0599 (13)	0.0039 (10)	0.0251 (11)	0.0302 (11)
C9	0.0717 (15)	0.0427 (11)	0.0615 (13)	0.0130 (10)	0.0313 (12)	0.0171 (10)
C7	0.0432 (11)	0.0545 (11)	0.0568 (12)	0.0165 (9)	0.0196 (9)	0.0259 (10)
C10	0.0524 (12)	0.0457 (10)	0.0480 (11)	0.0023 (9)	0.0171 (9)	0.0179 (9)
C8	0.0620 (14)	0.0535 (12)	0.0700 (14)	0.0251 (10)	0.0329 (12)	0.0285 (11)
C6	0.0285 (9)	0.0554 (11)	0.0601 (12)	0.0089 (8)	0.0103 (8)	0.0316 (10)
C3	0.0582 (13)	0.0635 (13)	0.0647 (14)	0.0047 (10)	0.0273 (11)	0.0360 (11)
C1	0.0405 (10)	0.0443 (10)	0.0450 (10)	0.0095 (8)	0.0116 (8)	0.0226 (8)
C17	0.0552 (12)	0.0401 (9)	0.0348 (9)	0.0102 (8)	0.0153 (8)	0.0152 (8)
C2	0.0555 (12)	0.0529 (11)	0.0510 (11)	0.0101 (9)	0.0184 (9)	0.0297 (10)
C4	0.0355 (10)	0.0582 (12)	0.0680 (13)	0.0054 (9)	0.0189 (9)	0.0314 (11)
C18	0.0469 (11)	0.0461 (10)	0.0402 (10)	0.0158 (8)	0.0092 (8)	0.0218 (8)
C5	0.0315 (9)	0.0392 (9)	0.0446 (10)	0.0053 (7)	0.0113 (7)	0.0164 (8)
C11	0.0410 (10)	0.0412 (9)	0.0388 (9)	0.0051 (7)	0.0143 (7)	0.0197 (8)
Cl1	0.0309 (2)	0.0587 (3)	0.0585 (3)	0.0126 (2)	0.0094 (2)	0.0207 (2)
F3	0.0981 (14)	0.1209 (15)	0.1660 (19)	0.0536 (12)	0.0649 (13)	0.1092 (15)
F5	0.0931 (12)	0.0951 (12)	0.0853 (11)	0.0077 (9)	0.0564 (10)	0.0269 (9)
F2	0.0790 (11)	0.1126 (13)	0.0617 (9)	0.0061 (9)	0.0342 (8)	0.0286 (9)
F1	0.0443 (8)	0.1515 (17)	0.0847 (11)	−0.0079 (9)	0.0016 (7)	0.0586 (11)
F6	0.0760 (10)	0.0695 (9)	0.0981 (11)	0.0058 (7)	0.0193 (8)	0.0500 (9)
F4	0.0522 (8)	0.0690 (8)	0.0724 (9)	−0.0055 (6)	0.0123 (7)	0.0238 (7)
N3	0.0483 (9)	0.0479 (9)	0.0439 (9)	0.0075 (7)	0.0187 (7)	0.0225 (7)
N1	0.0332 (8)	0.0421 (8)	0.0402 (8)	0.0094 (6)	0.0078 (6)	0.0193 (7)
N4	0.0391 (8)	0.0433 (8)	0.0436 (8)	0.0111 (6)	0.0153 (7)	0.0205 (7)
N2	0.0325 (8)	0.0400 (8)	0.0429 (8)	0.0076 (6)	0.0113 (6)	0.0197 (7)
O1	0.0350 (9)	0.0409 (9)	0.0411 (9)	0.0076 (7)	0.0104 (7)	0.0185 (8)
P1	0.0402 (3)	0.0644 (3)	0.0516 (3)	0.0071 (2)	0.0144 (2)	0.0312 (3)

Geometric parameters (Å, º) top

Mn1—O1	1.8034 (5)	C6—N1	1.485 (3)
Mn1—N2	2.1227 (16)	C6—C5	1.514 (3)
Mn1—N3	2.1341 (17)	C6—H6A	0.970
Mn1—N1	2.2280 (16)	C6—H6B	0.970
Mn1—N4	2.2893 (17)	C3—C2	1.367 (3)
Mn1—Cl1	2.2944 (7)	C3—C4	1.386 (3)
C16—C15	1.379 (4)	C3—H3	0.930
C16—C17	1.390 (3)	C1—N2	1.348 (2)
C16—H16	0.930	C1—C2	1.375 (3)
C15—C14	1.361 (4)	C1—H1	0.930
C15—H15	0.930	C17—N3	1.341 (3)
C12—N1	1.491 (2)	C17—C18	1.509 (3)
C12—C11	1.495 (3)	C2—H2	0.930
C12—H12A	0.970	C4—C5	1.378 (3)
C12—H12B	0.970	C4—H4	0.930
C14—C13	1.377 (3)	C18—N1	1.488 (2)
C14—H14	0.930	C18—H18A	0.970
C13—N3	1.346 (3)	C18—H18B	0.970
C13—H13	0.930	C5—N2	1.343 (2)
C9—C8	1.372 (3)	C11—N4	1.339 (2)
C9—C10	1.377 (3)	F3—P1	1.5854 (18)
C9—H9	0.930	F5—P1	1.5906 (16)
C7—N4	1.348 (3)	F2—P1	1.5908 (16)
C7—C8	1.375 (3)	F1—P1	1.5799 (16)
C7—H7	0.930	F6—P1	1.5966 (16)
C10—C11	1.385 (3)	F4—P1	1.6046 (15)
C10—H10	0.930	O1—Mn1ⁱ	1.8034 (5)
C8—H8	0.930

O1—Mn1—N2	90.82 (4)	N2—C1—H1	118.8
O1—Mn1—N3	92.87 (5)	C2—C1—H1	118.8
N2—Mn1—N3	154.78 (6)	N3—C17—C16	121.2 (2)
O1—Mn1—N1	91.90 (5)	N3—C17—C18	116.09 (17)
N2—Mn1—N1	78.71 (6)	C16—C17—C18	122.6 (2)
N3—Mn1—N1	76.24 (6)	C1—C2—C3	118.3 (2)
O1—Mn1—N4	166.67 (4)	C1—C2—H2	120.8
N2—Mn1—N4	82.20 (6)	C3—C2—H2	120.8
N3—Mn1—N4	88.79 (6)	C5—C4—C3	119.6 (2)
N1—Mn1—N4	75.64 (6)	C5—C4—H4	120.2
O1—Mn1—Cl1	102.88 (3)	C3—C4—H4	120.2
N2—Mn1—Cl1	103.45 (5)	N1—C18—C17	110.49 (15)
N3—Mn1—Cl1	100.01 (5)	N1—C18—H18A	109.6
N1—Mn1—Cl1	164.97 (4)	C17—C18—H18A	109.6
N4—Mn1—Cl1	89.83 (5)	N1—C18—H18B	109.6
C15—C16—C17	118.5 (2)	C17—C18—H18B	109.6
C15—C16—H16	120.7	H18A—C18—H18B	108.1
C17—C16—H16	120.7	N2—C5—C4	120.59 (18)
C16—C15—C14	120.3 (2)	N2—C5—C6	116.63 (17)
C16—C15—H15	119.9	C4—C5—C6	122.56 (17)
C14—C15—H15	119.9	N4—C11—C10	122.48 (18)
N1—C12—C11	114.72 (15)	N4—C11—C12	117.29 (16)
N1—C12—H12A	108.6	C10—C11—C12	120.17 (18)
C11—C12—H12A	108.6	C17—N3—C13	119.35 (19)
N1—C12—H12B	108.6	C17—N3—Mn1	114.96 (13)
C11—C12—H12B	108.6	C13—N3—Mn1	124.77 (15)
H12A—C12—H12B	107.6	C12—N1—C6	112.81 (17)
C13—C14—C15	118.8 (2)	C12—N1—C18	109.20 (15)
C13—C14—H14	120.6	C6—N1—C18	112.67 (15)
C15—C14—H14	120.6	C12—N1—Mn1	113.32 (12)
N3—C13—C14	121.8 (2)	C6—N1—Mn1	104.27 (11)
N3—C13—H13	119.1	C18—N1—Mn1	104.25 (11)
C14—C13—H13	119.1	C7—N4—C11	117.38 (17)
C8—C9—C10	118.7 (2)	C7—N4—Mn1	125.96 (14)
C8—C9—H9	120.7	C11—N4—Mn1	116.09 (12)
C10—C9—H9	120.7	C5—N2—C1	119.34 (17)
N4—C7—C8	123.0 (2)	C5—N2—Mn1	114.73 (12)
N4—C7—H7	118.5	C1—N2—Mn1	125.63 (13)
C8—C7—H7	118.5	Mn1ⁱ—O1—Mn1	180
C11—C10—C9	119.3 (2)	F3—P1—F1	91.72 (12)
C11—C10—H10	120.3	F3—P1—F2	90.05 (11)
C9—C10—H10	120.3	F1—P1—F2	90.83 (10)
C9—C8—C7	119.1 (2)	F3—P1—F6	179.00 (10)
C9—C8—H8	120.4	F1—P1—F6	89.26 (10)
C7—C8—H8	120.4	F2—P1—F6	89.71 (10)
N1—C6—C5	112.64 (15)	F3—P1—F5	90.98 (11)
N1—C6—H6A	109.1	F1—P1—F5	90.78 (10)
C5—C6—H6A	109.1	F2—P1—F5	178.06 (10)
N1—C6—H6B	109.1	F6—P1—F5	89.23 (10)
C5—C6—H6B	109.1	F3—P1—F4	90.10 (11)
H6A—C6—H6B	107.8	F1—P1—F4	178.14 (11)
C2—C3—C4	119.6 (2)	F2—P1—F4	88.82 (9)
C2—C3—H3	120.2	F6—P1—F4	88.92 (9)
C4—C3—H3	120.2	F5—P1—F4	89.54 (9)
N2—C1—C2	122.44 (19)

Symmetry code: (i) −x+2, −y+1, −z+1.

Experimental details

Crystal data
Chemical formula	[Mn₂O(C₁₈H₁₈ClN₄)₂](PF₆)₂
M_r	1067.45
Crystal system, space group	Triclinic, P1
Temperature (K)	293
a, b, c (Å)	8.5517 (12), 11.3128 (18), 12.914 (2)
α, β, γ (°)	115.51 (2), 107.44 (2), 91.49 (2)
V (Å³)	1058.1 (3)
Z	1
Radiation type	Mo Kα
µ (mm⁻¹)	0.89
Crystal size (mm)	0.28 × 0.22 × 0.18

Data collection
Diffractometer	Bruker APEXII CCD
Absorption correction	Multi-scan (SADABS; Bruker, 2001)
T_min, T_max	0.788, 0.856
No. of measured, independent and observed [I > 2σ(I)] reflections	9180, 4125, 3801
R_int	0.021
(sin θ/λ)_max (Å⁻¹)	0.617

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.029, 0.076, 1.00
No. of reflections	4125
No. of parameters	287
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.27, −0.31

Computer programs: APEX2 (Bruker, 2004), SAINT-Plus (Bruker, 2001), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 2001).

Acknowledgements

The authors thank Liaocheng University for financial support and Professor Jianmin Dou for his help.

References

Bruker (2001). SADABS, SAINT-Plus and SHELXTL. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2004). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Okabe, N. & Oya, N. (2000). Acta Cryst. C56, 1416–1417. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Scapin, G., Reddy, S. G., Zheng, R. & Blanchard, J. S. (1997). Biochemistry, 36, 15081–15088. CrossRef CAS PubMed Web of Science Google Scholar
Serre, C., Marrot, J. & Ferey, G. (2005). Inorg. Chem. 44, 654–658. Web of Science CSD CrossRef PubMed CAS Google Scholar
Sheldrick, G. M. (1997). SHELXS97 and SHELXL97. University of Göttingen, Germany. Google Scholar

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