catena-Poly[disilver(I)(Ag–Ag)-bis­(μ3-quinoline-3-carboxyl­ato)-1:2:1′κ3O:O′:N;2:1′′:2′′κ3N:O:O′]

Liu, C.-B.; Cong, Y.; Sun, H.-Y.

doi:10.1107/S1600536812035209

metal-organic compounds

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ISSN: 2056-9890

Volume 68| Part 9| September 2012| Page m1177

doi:10.1107/S1600536812035209

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catena-Poly[disilver(I)(Ag–Ag)-bis(μ₃-quinoline-3-carboxylato)-1:2:1′κ³O:O′:N;2:1′′:2′′κ³N:O:O′]

Chun-Bo Liu,^a ^* Yao Cong ^a and He-Yi Sun ^a

^aSchool of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
^*Correspondence e-mail: guangbocheujs@yahoo.com.cn

(Received 4 June 2012; accepted 9 August 2012; online 15 August 2012)

In the title compound, [Ag₂(C₁₀H₆NO₂)₂]_n, the Ag^I atom is coordinated by one N atom and two O atoms from three quinoline-3-carboxylate ligands in a T-shaped fashion, with an additional Ag⋯Ag distance of 2.9468 (6) Å. The ligands connect the Ag^I atoms into a double-chain structure along [010]. Weak Ag⋯O interactions [Ag⋯O = 2.802 (3) and 2.877 (4) Å] link the double-chains into a layer network parallel to (101). π–π interactions are also observed in the layer network [centroid–centroid distances = 3.780 (3) and 3.777 (3) Å].

Related literature

For background to the design and applications of structures with metal-organic frameworks and of Ag^I complexes, see: Sun et al. (2010 ); Wei et al. (2006 ); Yilmaz et al. (2008 ). For related structures, see: Baenziger et al. (1986 ); Yang et al. (2004 ); Yeşiilel et al. (2011 ); You et al. (2004 ).

Experimental

Crystal data

[Ag₂(C₁₀H₆NO₂)₂]
M_r = 560.06
Triclinic, $[P \overline 1]$
a = 8.0583 (15) Å
b = 8.4824 (15) Å
c = 12.934 (2) Å
α = 93.225 (2)°
β = 94.812 (2)°
γ = 104.640 (2)°
V = 849.6 (3) Å³
Z = 2
Mo Kα radiation
μ = 2.34 mm⁻¹
T = 293 K
0.13 × 0.11 × 0.10 mm

Data collection

Bruker APEX CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ) T_min = 0.745, T_max = 0.792
6197 measured reflections
2962 independent reflections
2298 reflections with I > 2σ(I)
R_int = 0.027

Refinement

R[F² > 2σ(F²)] = 0.030
wR(F²) = 0.081
S = 1.01
2962 reflections
253 parameters
168 restraints
H-atom parameters constrained
Δρ_max = 0.51 e Å⁻³
Δρ_min = −0.52 e Å⁻³

Table 1
Selected bond lengths (Å)

Ag1—N1	2.429 (3)
Ag1—O2ⁱ	2.219 (3)
Ag1—O4ⁱⁱ	2.220 (3)
Ag2—N2	2.373 (3)
Ag2—O1ⁱ	2.282 (3)
Ag2—O3ⁱⁱ	2.258 (3)
Symmetry codes: (i) x, y+1, z; (ii) x, y-1, z.

Data collection: SMART (Bruker, 2007 ); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999 ); software used to prepare material for publication: SHELXTL.

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536812035209/hy2558sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536812035209/hy2558Isup2.hkl

checkCIF report

Comment top

In recent years, the design and synthesis of metal-organic frameworks (MOFs) based on assembly of suitable and rigid building blocks have attracted great attention for their interesting structures and potential applications in catalysis, separation, gas storage and molecular recognition (Wei et al., 2006). Moreover, Ag(I) ion is easy to form short Ag–Ag contacts as well as ligand unsupported interactions, which have been proved to be two of the most important factors contributing to the formation of such complexes and special properties (Yilmaz et al., 2008). Much attention has been paid to Ag(I) ion as its d¹⁰ closed-shell electronic configuration. It demonstrates a dynamic range of coordinative geometries, including linear, trigonal-planar, tetrahedral and trigonal-pyramidal. In occasional, it also has examples of square-planar, pyramidal and octahedral geometries, and a tendency to form an argentophilic interaction, both of which may lead to discovery of novel structural motifs (Sun et al., 2010). It is well known that quinoline-3-carboxylic acid (HL) acts as a polyfunctional ligand in metal complexes and coordinates to metals by means of its carboxylate oxygen and a nitrogen atom, exhibiting different coordination modes, such as monodentate-N and monodentate-O, bis(monodentate), bidentate(N, O) and bridging form. In addition, HL also displays an extend π-system, which is beneficial for the formation of π–π interactions to generate high dimensional supramolecular architectures and further stabilize the network. Therefore, we selected silver ion and HL to obtain the title compound under hydrothermal conditions.

In the title compound, the Ag^I is coordinated by one N atom and two O atoms from three L ligands (Fig. 1, Table 1) and also forms an Ag···Ag contact (Baenziger et al., 1986; Yang et al., 2004). The distance of Ag1···Ag2 is 2.9468 (6) Å. It is shorter than the sum of the van der Waals radii of two silver(I) atoms (3.44 Å), thus the Ag—Ag interaction is found (Yeşilel et al., 2011; You et al., 2004). The bidentate bridging carboxylate group of the ligand connect two Ag atoms and the pyridine N atom links another Ag atom, leading to the formation of a one-dimensional double-chain structure (Fig. 2). The weak Ag···O interactions, with Ag1···O2ⁱ and Ag2···O1ⁱⁱ distances of 2.802 (3) and 2.877 (4) Å [symmetry codes: (i) 2-x, -y, 1-z; (ii) 1-x, -y, 1-z], link the double-chains into a layer network. π–π interactions are observed in the layer network [centroid–centroid distances = 3.780 (3) and 3.777 (3) Å].

Related literature top

For background to the design and applications of structures with metal-organic frameworks and of Ag^I complexes, see: Sun et al. (2010); Wei et al. (2006); Yilmaz et al. (2008). For related structures, see: Baenziger et al. (1986); Yang et al. (2004); Yeşilel et al. (2011); You et al. (2004).

Experimental top

HL was purchased commercially and used without further purification. A mixture of AgCl (14.33 mg, 0.1 mmol) and HL (17.30 mg, 0.1 mmol) was dissolved in a 10 ml of water with pH = 6. The resulting mixture was heated in a 15 ml Teflon-lined autoclave at 438 K for three days. Then the autoclave was slowly cooled to room temperature and colourless block-shaped crystals were obtained in a yield of 50%.

Computing details top

Data collection: SMART (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Figures top

	Fig. 1. The asymmetric unit of the title compound. Displacement ellipsoids are drawn at the 30% probability level. [Symmetry codes: (i) x, y+1, z; (ii) x, y-1, z.]
	Fig. 2. The one-dimensional double-chain of the title compound. H atoms have been omitted for clarity.

catena-Poly[disilver(I)(Ag–Ag)-bis(µ₃-quinoline-3- carboxylato)-1:2:1'κ³O:O':N;2:1'': 2''κ³N:O:O'] top

Crystal data top

[Ag₂(C₁₀H₆NO₂)₂]	Z = 2
M_r = 560.06	F(000) = 544
Triclinic, P1	D_x = 2.189 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 8.0583 (15) Å	Cell parameters from 7499 reflections
b = 8.4824 (15) Å	θ = 1.6–27.5°
c = 12.934 (2) Å	µ = 2.34 mm⁻¹
α = 93.225 (2)°	T = 293 K
β = 94.812 (2)°	Block, colourless
γ = 104.640 (2)°	0.13 × 0.11 × 0.10 mm
V = 849.6 (3) Å³

Data collection top

Bruker APEX CCD diffractometer	2962 independent reflections
Radiation source: fine-focus sealed tube	2298 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.027
ϕ and ω scans	θ_max = 25.0°, θ_min = 1.6°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −9→9
T_min = 0.745, T_max = 0.792	k = −10→10
6197 measured reflections	l = −15→13

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)] = 0.030	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.081	H-atom parameters constrained
S = 1.01	w = 1/[σ²(F_o²) + (0.0428P)²] where P = (F_o² + 2F_c²)/3
2962 reflections	(Δ/σ)_max = 0.001
253 parameters	Δρ_max = 0.51 e Å⁻³
168 restraints	Δρ_min = −0.52 e Å⁻³

Crystal data top

[Ag₂(C₁₀H₆NO₂)₂]	γ = 104.640 (2)°
M_r = 560.06	V = 849.6 (3) Å³
Triclinic, P1	Z = 2
a = 8.0583 (15) Å	Mo Kα radiation
b = 8.4824 (15) Å	µ = 2.34 mm⁻¹
c = 12.934 (2) Å	T = 293 K
α = 93.225 (2)°	0.13 × 0.11 × 0.10 mm
β = 94.812 (2)°

Data collection top

Bruker APEX CCD diffractometer	2962 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	2298 reflections with I > 2σ(I)
T_min = 0.745, T_max = 0.792	R_int = 0.027
6197 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.030	168 restraints
wR(F²) = 0.081	H-atom parameters constrained
S = 1.01	Δρ_max = 0.51 e Å⁻³
2962 reflections	Δρ_min = −0.52 e Å⁻³
253 parameters

Special details top

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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
C1	0.8357 (5)	−0.0050 (5)	0.4189 (3)	0.0298 (10)
H1	0.7730	−0.0137	0.4764	0.036*
C2	0.8690 (5)	−0.1487 (5)	0.3753 (3)	0.0278 (10)
C3	0.9556 (5)	−0.1377 (5)	0.2879 (3)	0.0284 (10)
H3	0.9797	−0.2302	0.2574	0.034*
C4	1.0077 (5)	0.0126 (5)	0.2442 (3)	0.0281 (10)
C5	0.9753 (5)	0.1526 (5)	0.2963 (3)	0.0268 (10)
C6	1.0337 (6)	0.3077 (6)	0.2576 (4)	0.0335 (11)
H6	1.0133	0.3995	0.2916	0.040*
C7	1.1193 (6)	0.3232 (6)	0.1711 (4)	0.0408 (12)
H7	1.1604	0.4260	0.1473	0.049*
C8	1.1461 (6)	0.1846 (6)	0.1173 (4)	0.0413 (12)
H8	1.2010	0.1959	0.0567	0.050*
C9	1.0927 (6)	0.0338 (6)	0.1529 (4)	0.0388 (12)
H9	1.1125	−0.0564	0.1166	0.047*
C10	0.8127 (5)	−0.3042 (5)	0.4268 (3)	0.0297 (10)
C11	0.5510 (6)	0.8739 (5)	0.6646 (3)	0.0298 (10)
H11	0.6006	0.8810	0.6021	0.036*
C12	0.5331 (5)	1.0201 (5)	0.7144 (3)	0.0271 (10)
C13	0.4575 (5)	1.0106 (5)	0.8051 (3)	0.0286 (10)
H13	0.4414	1.1043	0.8391	0.034*
C14	0.4036 (6)	0.8582 (6)	0.8472 (3)	0.0309 (10)
C15	0.4289 (5)	0.7163 (5)	0.7920 (4)	0.0298 (10)
C16	0.3802 (6)	0.5640 (6)	0.8339 (4)	0.0391 (12)
H16	0.3952	0.4710	0.7984	0.047*
C17	0.3109 (7)	0.5526 (7)	0.9267 (4)	0.0519 (14)
H17	0.2809	0.4517	0.9544	0.062*
C18	0.2839 (7)	0.6908 (7)	0.9811 (4)	0.0540 (15)
H18	0.2359	0.6804	1.0440	0.065*
C19	0.3277 (6)	0.8391 (6)	0.9421 (4)	0.0413 (12)
H19	0.3075	0.9294	0.9781	0.050*
C20	0.5961 (6)	1.1778 (5)	0.6657 (4)	0.0302 (10)
N1	0.8868 (4)	0.1405 (4)	0.3842 (3)	0.0287 (8)
N2	0.5033 (5)	0.7289 (4)	0.6994 (3)	0.0306 (9)
O1	0.7023 (4)	−0.3102 (4)	0.4894 (3)	0.0389 (8)
O2	0.8812 (4)	−0.4181 (4)	0.4039 (2)	0.0372 (8)
O3	0.5866 (5)	1.3064 (4)	0.7133 (3)	0.0479 (9)
O4	0.6565 (4)	1.1679 (4)	0.5802 (3)	0.0428 (9)
Ag1	0.79527 (5)	0.35203 (4)	0.48083 (3)	0.03910 (14)
Ag2	0.60900 (5)	0.52274 (4)	0.61650 (3)	0.04425 (15)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
C1	0.034 (2)	0.027 (2)	0.031 (2)	0.0094 (19)	0.0114 (19)	0.0067 (19)
C2	0.030 (2)	0.025 (2)	0.030 (2)	0.0087 (18)	0.0055 (18)	0.0059 (19)
C3	0.038 (2)	0.022 (2)	0.027 (2)	0.0122 (18)	0.0074 (18)	−0.0037 (18)
C4	0.030 (2)	0.027 (2)	0.028 (2)	0.0090 (18)	0.0047 (18)	0.0029 (19)
C5	0.028 (2)	0.027 (2)	0.028 (2)	0.0109 (18)	0.0063 (18)	0.0026 (18)
C6	0.039 (2)	0.023 (2)	0.041 (3)	0.0095 (19)	0.011 (2)	0.009 (2)
C7	0.049 (3)	0.033 (3)	0.043 (3)	0.010 (2)	0.013 (2)	0.014 (2)
C8	0.052 (3)	0.042 (3)	0.034 (2)	0.013 (2)	0.020 (2)	0.008 (2)
C9	0.049 (3)	0.033 (3)	0.039 (3)	0.015 (2)	0.015 (2)	0.004 (2)
C10	0.035 (2)	0.026 (2)	0.028 (2)	0.0075 (19)	0.0043 (19)	0.0004 (19)
C11	0.039 (2)	0.025 (2)	0.028 (2)	0.0107 (19)	0.0117 (19)	0.0057 (19)
C12	0.031 (2)	0.022 (2)	0.031 (2)	0.0085 (18)	0.0056 (18)	0.0040 (19)
C13	0.039 (2)	0.022 (2)	0.028 (2)	0.0117 (19)	0.0066 (18)	0.0001 (18)
C14	0.037 (2)	0.028 (2)	0.030 (2)	0.0104 (19)	0.0079 (19)	0.0065 (19)
C15	0.030 (2)	0.025 (2)	0.036 (2)	0.0079 (18)	0.0079 (19)	0.0067 (19)
C16	0.053 (3)	0.027 (2)	0.039 (3)	0.011 (2)	0.014 (2)	0.006 (2)
C17	0.069 (3)	0.040 (3)	0.050 (3)	0.012 (2)	0.019 (3)	0.017 (2)
C18	0.067 (3)	0.053 (3)	0.045 (3)	0.014 (3)	0.029 (3)	0.014 (3)
C19	0.053 (3)	0.037 (3)	0.036 (3)	0.013 (2)	0.013 (2)	0.004 (2)
C20	0.038 (2)	0.021 (2)	0.034 (2)	0.0117 (19)	0.008 (2)	0.0045 (19)
N1	0.0348 (19)	0.021 (2)	0.031 (2)	0.0072 (16)	0.0088 (16)	0.0006 (16)
N2	0.042 (2)	0.023 (2)	0.031 (2)	0.0113 (16)	0.0147 (17)	0.0053 (16)
O1	0.0514 (19)	0.0296 (18)	0.0437 (19)	0.0174 (15)	0.0238 (16)	0.0104 (15)
O2	0.0490 (18)	0.0205 (17)	0.0459 (19)	0.0114 (14)	0.0182 (16)	0.0036 (15)
O3	0.078 (2)	0.0253 (18)	0.046 (2)	0.0173 (17)	0.0210 (18)	0.0058 (16)
O4	0.061 (2)	0.0273 (18)	0.046 (2)	0.0123 (15)	0.0296 (17)	0.0072 (15)
Ag1	0.0547 (3)	0.0202 (2)	0.0470 (3)	0.01195 (18)	0.01993 (19)	0.01007 (18)
Ag2	0.0681 (3)	0.0223 (2)	0.0496 (3)	0.0169 (2)	0.0257 (2)	0.01112 (19)

Geometric parameters (Å, º) top

C1—N1	1.315 (5)	C12—C20	1.501 (6)
C1—C2	1.410 (6)	C13—C14	1.411 (6)
C1—H1	0.9300	C13—H13	0.9300
C2—C3	1.374 (6)	C14—C19	1.416 (6)
C2—C10	1.495 (6)	C14—C15	1.433 (6)
C3—C4	1.404 (6)	C15—N2	1.381 (5)
C3—H3	0.9300	C15—C16	1.406 (6)
C4—C9	1.412 (6)	C16—C17	1.363 (7)
C4—C5	1.424 (6)	C16—H16	0.9300
C5—N1	1.386 (5)	C17—C18	1.407 (8)
C5—C6	1.416 (6)	C17—H17	0.9300
C6—C7	1.359 (6)	C18—C19	1.355 (7)
C6—H6	0.9300	C18—H18	0.9300
C7—C8	1.405 (7)	C19—H19	0.9300
C7—H7	0.9300	C20—O3	1.245 (5)
C8—C9	1.361 (7)	C20—O4	1.252 (5)
C8—H8	0.9300	Ag1—N1	2.429 (3)
C9—H9	0.9300	Ag1—O2ⁱ	2.219 (3)
C10—O1	1.246 (5)	Ag1—O4ⁱⁱ	2.220 (3)
C10—O2	1.261 (5)	Ag1—Ag2	2.9468 (6)
C11—N2	1.310 (5)	Ag2—N2	2.373 (3)
C11—C12	1.410 (6)	Ag2—O1ⁱ	2.282 (3)
C11—H11	0.9300	Ag2—O3ⁱⁱ	2.258 (3)
C12—C13	1.364 (6)	Ag2—Ag2ⁱⁱⁱ	3.3099 (10)

N1—C1—C2	124.9 (4)	N2—C15—C14	120.5 (4)
N1—C1—H1	117.6	C16—C15—C14	119.4 (4)
C2—C1—H1	117.6	C17—C16—C15	120.0 (5)
C3—C2—C1	117.8 (4)	C17—C16—H16	120.0
C3—C2—C10	123.0 (4)	C15—C16—H16	120.0
C1—C2—C10	119.2 (4)	C16—C17—C18	121.1 (5)
C2—C3—C4	120.3 (4)	C16—C17—H17	119.4
C2—C3—H3	119.9	C18—C17—H17	119.4
C4—C3—H3	119.9	C19—C18—C17	120.3 (5)
C3—C4—C9	124.0 (4)	C19—C18—H18	119.9
C3—C4—C5	117.9 (4)	C17—C18—H18	119.9
C9—C4—C5	118.1 (4)	C18—C19—C14	120.8 (5)
N1—C5—C6	119.0 (4)	C18—C19—H19	119.6
N1—C5—C4	121.5 (4)	C14—C19—H19	119.6
C6—C5—C4	119.5 (4)	O3—C20—O4	125.6 (4)
C7—C6—C5	120.4 (4)	O3—C20—C12	118.1 (4)
C7—C6—H6	119.8	O4—C20—C12	116.2 (4)
C5—C6—H6	119.8	C1—N1—C5	117.6 (4)
C6—C7—C8	120.2 (5)	C1—N1—Ag1	113.6 (3)
C6—C7—H7	119.9	C5—N1—Ag1	128.7 (3)
C8—C7—H7	119.9	C11—N2—C15	118.1 (4)
C9—C8—C7	120.8 (5)	C11—N2—Ag2	115.5 (3)
C9—C8—H8	119.6	C15—N2—Ag2	125.0 (3)
C7—C8—H8	119.6	C10—O1—Ag2ⁱⁱ	134.4 (3)
C8—C9—C4	120.9 (4)	C10—O2—Ag1ⁱⁱ	117.0 (3)
C8—C9—H9	119.6	C20—O3—Ag2ⁱ	115.2 (3)
C4—C9—H9	119.6	C20—O4—Ag1ⁱ	133.5 (3)
O1—C10—O2	125.3 (4)	O2ⁱ—Ag1—O4ⁱⁱ	161.54 (11)
O1—C10—C2	117.1 (4)	O2ⁱ—Ag1—N1	107.52 (12)
O2—C10—C2	117.6 (4)	O4ⁱⁱ—Ag1—N1	90.23 (12)
N2—C11—C12	125.2 (4)	O2ⁱ—Ag1—Ag2	88.38 (8)
N2—C11—H11	117.4	O4ⁱⁱ—Ag1—Ag2	73.44 (8)
C12—C11—H11	117.4	N1—Ag1—Ag2	162.81 (9)
C13—C12—C11	117.9 (4)	O3ⁱⁱ—Ag2—O1ⁱ	157.36 (12)
C13—C12—C20	123.0 (4)	O3ⁱⁱ—Ag2—N2	111.17 (12)
C11—C12—C20	119.1 (4)	O1ⁱ—Ag2—N2	90.66 (11)
C12—C13—C14	119.9 (4)	O3ⁱⁱ—Ag2—Ag1	85.21 (8)
C12—C13—H13	120.1	O1ⁱ—Ag2—Ag1	72.49 (8)
C14—C13—H13	120.1	N2—Ag2—Ag1	162.51 (9)
C13—C14—C19	123.2 (4)	O3ⁱⁱ—Ag2—Ag2ⁱⁱⁱ	119.91 (9)
C13—C14—C15	118.4 (4)	O1ⁱ—Ag2—Ag2ⁱⁱⁱ	58.54 (9)
C19—C14—C15	118.4 (4)	N2—Ag2—Ag2ⁱⁱⁱ	100.68 (9)
N2—C15—C16	120.1 (4)	Ag1—Ag2—Ag2ⁱⁱⁱ	74.839 (19)

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

Experimental details

Crystal data
Chemical formula	[Ag₂(C₁₀H₆NO₂)₂]
M_r	560.06
Crystal system, space group	Triclinic, P1
Temperature (K)	293
a, b, c (Å)	8.0583 (15), 8.4824 (15), 12.934 (2)
α, β, γ (°)	93.225 (2), 94.812 (2), 104.640 (2)
V (Å³)	849.6 (3)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	2.34
Crystal size (mm)	0.13 × 0.11 × 0.10

Data collection
Diffractometer	Bruker APEX CCD diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 1996)
T_min, T_max	0.745, 0.792
No. of measured, independent and observed [I > 2σ(I)] reflections	6197, 2962, 2298
R_int	0.027
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.030, 0.081, 1.01
No. of reflections	2962
No. of parameters	253
No. of restraints	168
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.51, −0.52

Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999), SHELXTL (Sheldrick, 2008).

Selected bond lengths (Å) top

Ag1—N1	2.429 (3)	Ag2—N2	2.373 (3)
Ag1—O2ⁱ	2.219 (3)	Ag2—O1ⁱ	2.282 (3)
Ag1—O4ⁱⁱ	2.220 (3)	Ag2—O3ⁱⁱ	2.258 (3)

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

Acknowledgements

The authors thank Jiangsu University for supporting this research.

References

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