catena-Poly[[diaqua­(4,4′-trimethyl­ene­dipyridine-κN)cobalt(II)]-μ-tereph­thalato-κ2O1:O4]

Qi, X.-L.

doi:10.1107/S1600536808043584

metal-organic compounds

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ISSN: 2056-9890

Volume 65| Part 2| February 2009| Page m135

doi:10.1107/S1600536808043584

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catena-Poly[[diaqua(4,4′-trimethylenedipyridine-κN)cobalt(II)]-μ-terephthalato-κ²O¹:O⁴]

Xu-Liang Qi ^a ^*

^aLiaocheng Vocational and Technical College, LiaoCheng 252000, ShanDong, People's Republic of China
^*Correspondence e-mail: q200801@sina.com

(Received 12 December 2008; accepted 22 December 2008; online 8 January 2009)

The title compound, [Co(C₈H₄O₄)(C₁₃H₁₄N₂)₂(H₂O)₂]_n, was obtained by the reaction of CoCl₂, 4,4′-trimethylenedipyridine and terephthalic acid in a 1:1:1 ratio. The octahedrally coordinated cobalt ions are bridged by 4,4′-trimethylenedipyridine ligands, generating a chain. These chains are further linked by O—H⋯O and O—H⋯N hydrogen bonds, giving a three-dimensional network.

Related literature

For a related structure, see Manna et al. (2005 ).

Experimental

Crystal data

[Co(C₈H₄O₄)(C₁₃H₁₄N₂)₂(H₂O)₂]
M_r = 655.60
Monoclinic, P 2₁ /c
a = 11.232 (2) Å
b = 9.3784 (19) Å
c = 15.182 (3) Å
β = 96.19 (3)°
V = 1589.9 (5) Å³
Z = 2
Mo Kα radiation
μ = 0.59 mm⁻¹
T = 293 (2) K
0.20 × 0.14 × 0.08 mm

Data collection

Bruker SMART 1K CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 2004 ) T_min = 0.891, T_max = 0.954
8438 measured reflections
2726 independent reflections
2167 reflections with I > 2σ(I)
R_int = 0.068

Refinement

R[F² > 2σ(F²)] = 0.070
wR(F²) = 0.179
S = 1.13
2726 reflections
207 parameters
H-atom parameters constrained
Δρ_max = 1.05 e Å⁻³
Δρ_min = −0.62 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3A⋯N2ⁱ	0.93	1.90	2.820 (5)	171
O3—H3B⋯O2ⁱⁱ	1.03	1.71	2.704 (4)	161
Symmetry codes: (i) $[-x+1, y-{\script{1\over 2}}, -z+{\script{1\over 2}}]$ ; (ii) -x, -y, -z.

Data collection: SMART (Bruker, 2001 ); cell refinement: SAINT (Bruker, 2001); 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 and local programs.

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536808043584/bt2833sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536808043584/bt2833Isup2.hkl

checkCIF report

Comment top

Co is six-coordinated by two terephthalate O atoms, two N atoms of 4,4'-trimethylenedipyridines and two water molecules in a distorted octahedral fashion. The Co—O and Co—N bond lengthes are in the normal range. The 4,4'-trimethylenedipyridine and terephthalate ligands adopt bidentate coordinated modes. As shown in Fig. 2, a chain structure is formed. These chains are further linked by O—H···O and O—H···N hydrogen bonds to generate a three-dimensional network.

Related literature top

For a related structure, see Manna et al. (2005).

Experimental top

CoCl₂(1.0 mmol), terephthalic acid (1 mmol), and 4,4'-trimethylenedipyridine (1 mmol) were dissolved in water (10 ml). The solution was heated in a 25 ml Teflon lined reaction vessel at 433 K for ca 3 days and then cooled to room temperature. Purple crystals were obtained in a yield of 65%.

Computing details top

Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); 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) and local programs.

Figures top

	Fig. 1. An ORTEP view of the Co centre and its surrounding ligands with 50% displacement ellipsoids for non-H atoms. Symmetry code: (A) -x,-y,-z
	Fig. 2. Partial packing diagram of the title compound.

catena-Poly[[diaqua(4,4'-trimethylenedipyridine-κN)cobalt(II)]- µ-terephthalato-κ²O¹:O⁴] top

Crystal data top

[Co(C₈H₄O₄)(C₁₃H₁₄N₂)₂(H₂O)₂]	F(000) = 686
M_r = 655.60	D_x = 1.369 Mg m⁻³
Monoclinic, P2₁/c	Mo Kα radiation, λ = 0.71073 Å
a = 11.232 (2) Å	Cell parameters from 3657 reflections
b = 9.3784 (19) Å	θ = 1.4–27.9°
c = 15.182 (3) Å	µ = 0.59 mm⁻¹
β = 96.19 (3)°	T = 293 K
V = 1589.9 (5) Å³	Block, purple
Z = 2	0.20 × 0.14 × 0.08 mm

Data collection top

Bruker SMART 1K CCD area-detector diffractometer	2726 independent reflections
Radiation source: sealed tube	2167 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.068
Detector resolution: 8.192 pixels mm^-1	θ_max = 25.0°, θ_min = 1.8°
Thin–slice ω scans	h = −11→13
Absorption correction: multi-scan (SADABS; Sheldrick, 2004)	k = −8→11
T_min = 0.891, T_max = 0.954	l = −17→18
8438 measured reflections

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)] = 0.070	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.179	H-atom parameters constrained
S = 1.13	w = 1/[σ²(F_o²) + (0.0794P)² + 1.059P] where P = (F_o² + 2F_c²)/3
2726 reflections	(Δ/σ)_max < 0.001
207 parameters	Δρ_max = 1.05 e Å⁻³
0 restraints	Δρ_min = −0.62 e Å⁻³

Crystal data top

[Co(C₈H₄O₄)(C₁₃H₁₄N₂)₂(H₂O)₂]	V = 1589.9 (5) Å³
M_r = 655.60	Z = 2
Monoclinic, P2₁/c	Mo Kα radiation
a = 11.232 (2) Å	µ = 0.59 mm⁻¹
b = 9.3784 (19) Å	T = 293 K
c = 15.182 (3) Å	0.20 × 0.14 × 0.08 mm
β = 96.19 (3)°

Data collection top

Bruker SMART 1K CCD area-detector diffractometer	2726 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 2004)	2167 reflections with I > 2σ(I)
T_min = 0.891, T_max = 0.954	R_int = 0.068
8438 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.070	0 restraints
wR(F²) = 0.179	H-atom parameters constrained
S = 1.13	Δρ_max = 1.05 e Å⁻³
2726 reflections	Δρ_min = −0.62 e Å⁻³
207 parameters

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
Co1	0.0000	0.0000	0.0000	0.0323 (3)
O1	0.1776 (3)	−0.0428 (3)	−0.0026 (2)	0.0398 (8)
O2	0.2160 (3)	−0.0377 (4)	−0.1445 (2)	0.0560 (10)
O3	0.0130 (3)	−0.0481 (3)	0.1394 (2)	0.0409 (8)
N1	0.0522 (3)	0.2209 (4)	0.0279 (2)	0.0369 (9)
N2	0.7841 (4)	0.5278 (5)	0.2442 (3)	0.0562 (12)
C1	0.0265 (4)	0.2912 (5)	0.1005 (3)	0.0451 (11)
H1	−0.0263	0.2493	0.1359	0.054*
C2	0.0747 (4)	0.4234 (5)	0.1253 (3)	0.0479 (12)
H2	0.0544	0.4674	0.1765	0.057*
C3	0.1530 (4)	0.4901 (5)	0.0739 (3)	0.0378 (10)
C4	0.1764 (4)	0.4190 (5)	−0.0026 (3)	0.0443 (11)
H4	0.2263	0.4604	−0.0405	0.053*
C5	0.1259 (4)	0.2869 (5)	−0.0226 (3)	0.0449 (12)
H5	0.1441	0.2415	−0.0739	0.054*
C6	0.2111 (4)	0.6317 (5)	0.1003 (4)	0.0541 (14)
H6A	0.1600	0.6837	0.1367	0.065*
H6B	0.2183	0.6877	0.0474	0.065*
C7	0.3359 (4)	0.6137 (5)	0.1519 (4)	0.0544 (14)
H7A	0.3618	0.7056	0.1764	0.065*
H7B	0.3290	0.5496	0.2013	0.065*
C8	0.4310 (5)	0.5574 (6)	0.0989 (4)	0.0612 (15)
H8A	0.4361	0.6191	0.0482	0.073*
H8B	0.4073	0.4634	0.0767	0.073*
C9	0.5539 (4)	0.5470 (5)	0.1508 (3)	0.0436 (11)
C10	0.6121 (4)	0.4186 (5)	0.1644 (4)	0.0516 (13)
H10	0.5755	0.3347	0.1429	0.062*
H3B	−0.0679	−0.0089	0.1545	0.09 (2)*
H3A	0.0837	−0.0307	0.1753	0.10 (2)*
C11	0.7261 (4)	0.4149 (6)	0.2103 (4)	0.0553 (14)
H11	0.7639	0.3268	0.2176	0.066*
C12	0.6140 (5)	0.6664 (6)	0.1852 (4)	0.0579 (14)
H12	0.5787	0.7559	0.1780	0.070*
C13	0.7273 (5)	0.6521 (6)	0.2307 (4)	0.0602 (15)
H13	0.7660	0.7341	0.2531	0.072*
C14	0.2472 (4)	−0.0357 (4)	−0.0632 (3)	0.0364 (10)
C15	0.3786 (3)	−0.0193 (4)	−0.0300 (3)	0.0314 (9)
C16	0.4142 (4)	0.0107 (4)	0.0580 (3)	0.0365 (10)
H16	0.3566	0.0188	0.0974	0.044*
C17	0.4659 (4)	−0.0292 (4)	−0.0888 (3)	0.0366 (10)
H17	0.4436	−0.0482	−0.1484	0.044*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Co1	0.0153 (5)	0.0487 (5)	0.0327 (5)	−0.0044 (3)	0.0010 (3)	0.0013 (3)
O1	0.0221 (16)	0.0495 (18)	0.048 (2)	−0.0006 (12)	0.0036 (14)	0.0055 (13)
O2	0.0219 (18)	0.099 (3)	0.046 (2)	−0.0012 (16)	0.0005 (15)	−0.0105 (18)
O3	0.0268 (17)	0.0538 (19)	0.041 (2)	−0.0043 (13)	−0.0021 (14)	0.0020 (14)
N1	0.028 (2)	0.041 (2)	0.042 (2)	−0.0028 (15)	0.0054 (16)	−0.0006 (16)
N2	0.033 (2)	0.089 (4)	0.046 (3)	0.002 (2)	−0.0009 (19)	0.011 (2)
C1	0.035 (3)	0.054 (3)	0.047 (3)	−0.003 (2)	0.009 (2)	−0.001 (2)
C2	0.041 (3)	0.058 (3)	0.044 (3)	0.004 (2)	0.000 (2)	−0.009 (2)
C3	0.024 (2)	0.043 (2)	0.044 (3)	0.0035 (18)	−0.0083 (18)	−0.001 (2)
C4	0.036 (3)	0.048 (3)	0.049 (3)	−0.011 (2)	0.003 (2)	0.003 (2)
C5	0.038 (3)	0.049 (3)	0.049 (3)	−0.009 (2)	0.008 (2)	0.000 (2)
C6	0.034 (3)	0.048 (3)	0.077 (4)	0.000 (2)	−0.009 (2)	−0.011 (2)
C7	0.037 (3)	0.056 (3)	0.068 (4)	0.001 (2)	−0.006 (2)	−0.019 (3)
C8	0.039 (3)	0.078 (4)	0.062 (4)	0.001 (3)	−0.012 (3)	−0.014 (3)
C9	0.032 (3)	0.053 (3)	0.045 (3)	0.003 (2)	−0.002 (2)	−0.002 (2)
C10	0.044 (3)	0.049 (3)	0.062 (4)	−0.006 (2)	0.006 (2)	0.007 (2)
C11	0.041 (3)	0.064 (4)	0.062 (4)	0.012 (3)	0.009 (3)	0.022 (3)
C12	0.046 (3)	0.054 (3)	0.071 (4)	0.004 (2)	−0.009 (3)	−0.005 (3)
C13	0.045 (3)	0.069 (4)	0.064 (4)	−0.016 (3)	−0.008 (3)	−0.006 (3)
C14	0.020 (2)	0.043 (3)	0.046 (3)	−0.0023 (17)	0.0015 (19)	0.0016 (19)
C15	0.018 (2)	0.037 (2)	0.039 (3)	0.0000 (16)	0.0010 (17)	−0.0018 (17)
C16	0.018 (2)	0.054 (3)	0.039 (3)	−0.0029 (18)	0.0095 (18)	−0.0022 (19)
C17	0.023 (2)	0.046 (3)	0.040 (3)	−0.0013 (17)	0.0032 (18)	−0.0042 (18)

Geometric parameters (Å, º) top

Co1—O1ⁱ	2.039 (3)	C6—H6A	0.9700
Co1—O1	2.039 (3)	C6—H6B	0.9700
Co1—O3ⁱ	2.154 (3)	C7—C8	1.500 (7)
Co1—O3	2.154 (3)	C7—H7A	0.9700
Co1—N1ⁱ	2.183 (3)	C7—H7B	0.9700
Co1—N1	2.183 (3)	C8—C9	1.517 (7)
O1—C14	1.271 (5)	C8—H8A	0.9700
O2—C14	1.247 (6)	C8—H8B	0.9700
O3—H3B	1.0283	C9—C10	1.375 (7)
O3—H3A	0.9271	C9—C12	1.381 (7)
N1—C5	1.339 (5)	C10—C11	1.390 (7)
N1—C1	1.342 (6)	C10—H10	0.9300
N2—C11	1.318 (7)	C11—H11	0.9300
N2—C13	1.334 (7)	C12—C13	1.388 (7)
C1—C2	1.389 (7)	C12—H12	0.9300
C1—H1	0.9300	C13—H13	0.9300
C2—C3	1.386 (7)	C14—C15	1.515 (6)
C2—H2	0.9300	C15—C16	1.381 (6)
C3—C4	1.388 (6)	C15—C17	1.398 (6)
C3—C6	1.515 (6)	C16—C17ⁱⁱ	1.389 (6)
C4—C5	1.383 (6)	C16—H16	0.9300
C4—H4	0.9300	C17—C16ⁱⁱ	1.389 (6)
C5—H5	0.9300	C17—H17	0.9300
C6—C7	1.540 (7)

O1ⁱ—Co1—O1	180.00 (16)	C7—C6—H6B	109.1
O1ⁱ—Co1—O3ⁱ	90.88 (12)	H6A—C6—H6B	107.9
O1—Co1—O3ⁱ	89.12 (12)	C8—C7—C6	115.3 (5)
O1ⁱ—Co1—O3	89.12 (12)	C8—C7—H7A	108.5
O1—Co1—O3	90.88 (12)	C6—C7—H7A	108.5
O3ⁱ—Co1—O3	180.00 (16)	C8—C7—H7B	108.5
O1ⁱ—Co1—N1ⁱ	86.99 (12)	C6—C7—H7B	108.5
O1—Co1—N1ⁱ	93.01 (12)	H7A—C7—H7B	107.5
O3ⁱ—Co1—N1ⁱ	91.14 (12)	C7—C8—C9	113.9 (4)
O3—Co1—N1ⁱ	88.86 (12)	C7—C8—H8A	108.8
O1ⁱ—Co1—N1	93.01 (12)	C9—C8—H8A	108.8
O1—Co1—N1	86.99 (12)	C7—C8—H8B	108.8
O3ⁱ—Co1—N1	88.86 (12)	C9—C8—H8B	108.8
O3—Co1—N1	91.14 (12)	H8A—C8—H8B	107.7
N1ⁱ—Co1—N1	180.0 (2)	C10—C9—C12	116.7 (5)
C14—O1—Co1	133.1 (3)	C10—C9—C8	121.7 (4)
Co1—O3—H3B	100.2	C12—C9—C8	121.6 (4)
Co1—O3—H3A	120.2	C9—C10—C11	119.6 (5)
H3B—O3—H3A	121.8	C9—C10—H10	120.2
C5—N1—C1	116.4 (4)	C11—C10—H10	120.2
C5—N1—Co1	119.8 (3)	N2—C11—C10	124.4 (5)
C1—N1—Co1	123.3 (3)	N2—C11—H11	117.8
C11—N2—C13	115.7 (4)	C10—C11—H11	117.8
N1—C1—C2	123.3 (4)	C9—C12—C13	119.6 (5)
N1—C1—H1	118.4	C9—C12—H12	120.2
C2—C1—H1	118.4	C13—C12—H12	120.2
C3—C2—C1	120.2 (4)	N2—C13—C12	124.0 (5)
C3—C2—H2	119.9	N2—C13—H13	118.0
C1—C2—H2	119.9	C12—C13—H13	118.0
C2—C3—C4	116.3 (4)	O2—C14—O1	125.9 (4)
C2—C3—C6	121.9 (4)	O2—C14—C15	119.4 (4)
C4—C3—C6	121.8 (4)	O1—C14—C15	114.7 (4)
C5—C4—C3	120.2 (4)	C16—C15—C17	118.8 (4)
C5—C4—H4	119.9	C16—C15—C14	120.8 (4)
C3—C4—H4	119.9	C17—C15—C14	120.4 (4)
N1—C5—C4	123.5 (4)	C15—C16—C17ⁱⁱ	121.3 (4)
N1—C5—H5	118.2	C15—C16—H16	119.3
C4—C5—H5	118.2	C17ⁱⁱ—C16—H16	119.3
C3—C6—C7	112.4 (4)	C16ⁱⁱ—C17—C15	119.9 (4)
C3—C6—H6A	109.1	C16ⁱⁱ—C17—H17	120.1
C7—C6—H6A	109.1	C15—C17—H17	120.1
C3—C6—H6B	109.1

O1ⁱ—Co1—O1—C14	−175 (95)	C2—C3—C6—C7	94.5 (5)
O3ⁱ—Co1—O1—C14	2.6 (4)	C4—C3—C6—C7	−84.7 (6)
O3—Co1—O1—C14	−177.4 (4)	C3—C6—C7—C8	68.8 (6)
N1ⁱ—Co1—O1—C14	93.7 (4)	C6—C7—C8—C9	177.5 (4)
N1—Co1—O1—C14	−86.3 (4)	C7—C8—C9—C10	118.4 (5)
O1ⁱ—Co1—N1—C5	−130.3 (3)	C7—C8—C9—C12	−62.9 (7)
O1—Co1—N1—C5	49.7 (3)	C12—C9—C10—C11	−0.5 (7)
O3ⁱ—Co1—N1—C5	−39.5 (3)	C8—C9—C10—C11	178.3 (5)
O3—Co1—N1—C5	140.5 (3)	C13—N2—C11—C10	−1.2 (8)
N1ⁱ—Co1—N1—C5	82 (48)	C9—C10—C11—N2	1.1 (8)
O1ⁱ—Co1—N1—C1	58.2 (4)	C10—C9—C12—C13	0.0 (8)
O1—Co1—N1—C1	−121.8 (4)	C8—C9—C12—C13	−178.7 (5)
O3ⁱ—Co1—N1—C1	149.1 (4)	C11—N2—C13—C12	0.7 (8)
O3—Co1—N1—C1	−30.9 (4)	C9—C12—C13—N2	−0.2 (9)
N1ⁱ—Co1—N1—C1	−90 (48)	Co1—O1—C14—O2	−21.8 (7)
C5—N1—C1—C2	−1.9 (7)	Co1—O1—C14—C15	156.4 (3)
Co1—N1—C1—C2	169.9 (3)	O2—C14—C15—C16	167.4 (4)
N1—C1—C2—C3	0.5 (7)	O1—C14—C15—C16	−10.9 (6)
C1—C2—C3—C4	1.5 (7)	O2—C14—C15—C17	−10.2 (6)
C1—C2—C3—C6	−177.7 (4)	O1—C14—C15—C17	171.5 (4)
C2—C3—C4—C5	−2.1 (7)	C17—C15—C16—C17ⁱⁱ	−0.8 (7)
C6—C3—C4—C5	177.1 (4)	C14—C15—C16—C17ⁱⁱ	−178.5 (4)
C1—N1—C5—C4	1.2 (7)	C16—C15—C17—C16ⁱⁱ	0.8 (7)
Co1—N1—C5—C4	−170.8 (4)	C14—C15—C17—C16ⁱⁱ	178.5 (4)
C3—C4—C5—N1	0.8 (7)

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

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O3—H3A···N2ⁱⁱⁱ	0.93	1.90	2.820 (5)	171
O3—H3B···O2ⁱ	1.03	1.71	2.704 (4)	161

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

Experimental details

Crystal data
Chemical formula	[Co(C₈H₄O₄)(C₁₃H₁₄N₂)₂(H₂O)₂]
M_r	655.60
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	293
a, b, c (Å)	11.232 (2), 9.3784 (19), 15.182 (3)
β (°)	96.19 (3)
V (Å³)	1589.9 (5)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	0.59
Crystal size (mm)	0.20 × 0.14 × 0.08

Data collection
Diffractometer	Bruker SMART 1K CCD area-detector diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 2004)
T_min, T_max	0.891, 0.954
No. of measured, independent and observed [I > 2σ(I)] reflections	8438, 2726, 2167
R_int	0.068
(sin θ/λ)_max (Å⁻¹)	0.594

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.070, 0.179, 1.13
No. of reflections	2726
No. of parameters	207
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	1.05, −0.62

Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and local programs.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O3—H3A···N2ⁱ	0.93	1.90	2.820 (5)	171.4
O3—H3B···O2ⁱⁱ	1.03	1.71	2.704 (4)	160.9

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

References

Bruker (2001). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Manna, S. C., Konar, S., Zangrando, E., Okamoto, K., Ribas, J. & Chaudhuri, N. R. (2005). Eur. J. Inorg. Chem. pp. 4646–4654. Web of Science CSD CrossRef Google Scholar
Sheldrick, G. M. (2004). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar

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