Poly[[diaqua­bis­(μ3-3-carboxyl­ato-4-hy­droxy­benzene­sulfonato)­tri-μ2-pyrazine-tetra­silver(I)] dihydrate]

Liu, Y.-Y.; Wang, S.-T.; Yan, Y.-S.

doi:10.1107/S1600536811041626

metal-organic compounds

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ISSN: 2056-9890

Volume 67| Part 11| November 2011| Page m1545

doi:10.1107/S1600536811041626

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Poly[[diaquabis(μ₃-3-carboxylato-4-hydroxybenzenesulfonato)tri-μ₂-pyrazine-tetrasilver(I)] dihydrate]

Ying-Ying Liu,^a Shen-Tang Wang ^a and Yong-Sheng Yan ^a ^*

^aDepartment of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China
^*Correspondence e-mail: yys@ujs.edu.cn

(Received 16 September 2011; accepted 10 October 2011; online 22 October 2011)

The title coordination polymer, {[Ag₄(C₇H₄O₆S)₂(C₄H₄N₂)₃(H₂O)₂]·2H₂O}_n, contains two independent Ag^I ions. One Ag^I ion is coordinated by one O atom from a 3-carboxylato-4-hydroxybenzenesulfonate (L) ligand, two N atoms from two pyrazine ligands and a water molecule. The other Ag^I ion is coordinated by two O atoms from two L ligands and one N atom from a pyrazine ligand. One of the pyrazine ligands lies on an inversion center. The L and pyrazine ligands link the Ag^I ions into polymeric layers parallel to the ac plane. The layers are connected by intermolecular O—H⋯O hydrogen bonds. An intramolecular O—H⋯O hydrogen bond is also present in the L ligand.

Related literature

For a related structure, see: Nie & Qu (2011 ).

Experimental

Crystal data

[Ag₄(C₇H₄O₆S)₂(C₄H₄N₂)₃(H₂O)₂]·2H₂O
M_r = 1176.14
Triclinic, $[P \overline 1]$
a = 7.646 (5) Å
b = 10.340 (4) Å
c = 11.375 (4) Å
α = 78.751 (3)°
β = 73.436 (4)°
γ = 82.882 (5)°
V = 843.2 (7) Å³
Z = 1
Mo Kα radiation
μ = 2.50 mm⁻¹
T = 293 K
0.21 × 0.15 × 0.12 mm

Data collection

Bruker APEX CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ) T_min = 0.622, T_max = 0.754
7253 measured reflections
3387 independent reflections
2190 reflections with I > 2σ(I)
R_int = 0.058

Refinement

R[F² > 2σ(F²)] = 0.033
wR(F²) = 0.073
S = 0.88
3387 reflections
256 parameters
5 restraints
H atoms treated by a mixture of independent and constrained refinement
Δρ_max = 0.70 e Å⁻³
Δρ_min = −1.09 e Å⁻³

Table 1
Selected bond lengths (Å)

Ag1—N1	2.180 (3)
Ag1—O3ⁱ	2.621 (3)
Ag1—O6	2.153 (3)
Ag2—N2	2.245 (3)
Ag2—N3	2.262 (3)
Ag2—O1ⁱⁱ	2.516 (4)
Ag2—OW2	2.576 (4)
Symmetry codes: (i) -x, -y, -z-1; (ii) x+1, y, z+1.

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
OW1—H1A⋯O5	0.88 (2)	1.89 (2)	2.751 (4)	168 (6)
OW1—H1B⋯O5ⁱⁱⁱ	0.89 (2)	2.00 (2)	2.883 (5)	173 (6)
OW2—H2A⋯O2ⁱⁱⁱ	0.88 (2)	1.91 (3)	2.757 (5)	161 (6)
OW2—H2B⋯OW1^iv	0.89 (2)	2.03 (3)	2.794 (6)	143 (2)
O4—H4A⋯O6	0.82	1.84	2.556 (4)	146
Symmetry codes: (iii) -x, -y+1, -z-1; (iv) -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/S1600536811041626/hy2474sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536811041626/hy2474Isup2.hkl

checkCIF report

Comment top

As part of an investigation of the applications of transition metal complexes, there is a need to prepare further examples of these compounds. In this paper, the structure of the title compound is described.

As shown in Fig. 1, there exist two crystallographically independent Ag^I ions. Ag1 atom is three-coordinated (Table 1), having an approximate T-shaped geometry composed of one sulfonate O atom, one carboxylate O atom from two 3-carboxylate-4-hydroxybenzenesulfonate (L) ligands and one N atom from a pyrazine ligand. Ag2 atom is coordinated by one sulfonate O atom of an L ligand, two N atoms from two pyrazine ligands and one water molecule (Nie & Qu, 2011). The Ag^I ions are bridged by the L and pyrazine ligands, forming a two-dimensional polymeric layer (Fig. 2). The layers are connected by intermolecular O—H···O hydrogen bonds (Table 2). An intramolecular O—H···O hydrogen bond is present in the L ligand.

Related literature top

For a related structure, see: Nie & Qu (2011).

Experimental top

To a mixture of 5-sulfosalicylic acid (0.109 g, 0.5 mmol) and NaOH (0.040 g, 1.0 mmol) in water (5 ml) was added AgNO₃ (0.170 g, 1.0 mmol), giving a clear solution. Then ethanol (15 ml) was added to the solution, and white precipitate appeared. The precipitate was collected and dissolved in water. To the solution was added pyrazine (0.081 g, 1 mmol) in methanol (5 ml) and white precipitate formed. The precipitate was dissolved by dropwise addition of acetonitrile. Colorless crystals were obtained from the filtrate after standing in a dark room for several days (yield: 0.150 g, 51%).

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) 1 - x, -y, 1 - z; (iii) 1 - x, 1 - y, 1 - z.]
	Fig. 2. View of the two-dimensional layer in the title compound.

Poly[[diaquabis(µ₃-3-carboxylato-4-hydroxybenzenesulfonato)tri-µ₂- pyrazine-tetrasilver(I)] dihydrate] top

Crystal data top

[Ag₄(C₇H₄O₆S)₂(C₄H₄N₂)₃(H₂O)₂]·2H₂O	Z = 1
M_r = 1176.14	F(000) = 574
Triclinic, P1	D_x = 2.316 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 7.646 (5) Å	Cell parameters from 2192 reflections
b = 10.340 (4) Å	θ = 3.2–27.5°
c = 11.375 (4) Å	µ = 2.50 mm⁻¹
α = 78.751 (3)°	T = 293 K
β = 73.436 (4)°	Block, colorless
γ = 82.882 (5)°	0.21 × 0.15 × 0.12 mm
V = 843.2 (7) Å³

Data collection top

Bruker APEX CCD diffractometer	3387 independent reflections
Radiation source: fine-focus sealed tube	2190 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.058
ϕ and ω scans	θ_max = 27.5°, θ_min = 3.2°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −9→9
T_min = 0.622, T_max = 0.754	k = −12→13
7253 measured reflections	l = −12→14

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	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.073	H atoms treated by a mixture of independent and constrained refinement
S = 0.88	w = 1/[σ²(F_o²) + (0.0213P)²] where P = (F_o² + 2F_c²)/3
3387 reflections	(Δ/σ)_max < 0.001
256 parameters	Δρ_max = 0.70 e Å⁻³
5 restraints	Δρ_min = −1.09 e Å⁻³

Crystal data top

[Ag₄(C₇H₄O₆S)₂(C₄H₄N₂)₃(H₂O)₂]·2H₂O	γ = 82.882 (5)°
M_r = 1176.14	V = 843.2 (7) Å³
Triclinic, P1	Z = 1
a = 7.646 (5) Å	Mo Kα radiation
b = 10.340 (4) Å	µ = 2.50 mm⁻¹
c = 11.375 (4) Å	T = 293 K
α = 78.751 (3)°	0.21 × 0.15 × 0.12 mm
β = 73.436 (4)°

Data collection top

Bruker APEX CCD diffractometer	3387 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	2190 reflections with I > 2σ(I)
T_min = 0.622, T_max = 0.754	R_int = 0.058
7253 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.033	5 restraints
wR(F²) = 0.073	H atoms treated by a mixture of independent and constrained refinement
S = 0.88	Δρ_max = 0.70 e Å⁻³
3387 reflections	Δρ_min = −1.09 e Å⁻³
256 parameters

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

	x	y	z	U_iso*/U_eq
Ag1	0.29090 (6)	0.17665 (4)	−0.29686 (4)	0.03972 (13)
Ag2	0.39877 (5)	0.41619 (4)	0.22945 (4)	0.03870 (13)
C1	0.1323 (5)	0.1138 (4)	−0.6235 (4)	0.0216 (9)
C2	0.2275 (6)	−0.0059 (4)	−0.6494 (4)	0.0253 (10)
C3	0.1985 (6)	−0.0669 (4)	−0.7399 (4)	0.0288 (10)
H3	0.2663	−0.1448	−0.7589	0.035*
C4	0.0686 (6)	−0.0115 (4)	−0.8019 (4)	0.0263 (10)
H4	0.0493	−0.0518	−0.8630	0.032*
C5	−0.0332 (5)	0.1047 (4)	−0.7726 (4)	0.0219 (9)
C6	−0.0001 (5)	0.1680 (4)	−0.6871 (4)	0.0214 (9)
H6	−0.0656	0.2474	−0.6709	0.026*
C7	0.1616 (6)	0.1842 (5)	−0.5288 (4)	0.0266 (10)
C8	0.3541 (6)	0.1792 (5)	−0.0457 (4)	0.0311 (11)
H8	0.3830	0.0903	−0.0517	0.037*
C9	0.3716 (6)	0.2241 (4)	0.0570 (4)	0.0299 (11)
H9	0.4142	0.1646	0.1171	0.036*
C10	0.2678 (6)	0.4298 (5)	−0.0175 (4)	0.0317 (11)
H10	0.2345	0.5181	−0.0100	0.038*
C11	0.2525 (6)	0.3863 (5)	−0.1201 (5)	0.0322 (11)
H11	0.2101	0.4459	−0.1802	0.039*
C12	0.5470 (6)	0.3813 (5)	0.4676 (4)	0.0288 (10)
H12	0.5817	0.2972	0.4474	0.035*
C13	0.4107 (6)	0.5879 (5)	0.4325 (4)	0.0294 (11)
H13	0.3477	0.6518	0.3871	0.035*
N1	0.2969 (5)	0.2599 (4)	−0.1363 (3)	0.0280 (9)
N2	0.3295 (5)	0.3496 (4)	0.0728 (4)	0.0281 (9)
N3	0.4568 (5)	0.4690 (4)	0.3978 (3)	0.0288 (9)
O1	−0.3073 (6)	0.2729 (4)	−0.7854 (4)	0.0730 (16)
O2	−0.1208 (6)	0.2172 (5)	−0.9749 (4)	0.0738 (14)
O3	−0.3110 (6)	0.0589 (4)	−0.8372 (5)	0.0805 (17)
O4	0.3512 (4)	−0.0688 (3)	−0.5882 (3)	0.0359 (8)
H4A	0.3588	−0.0253	−0.5370	0.054*
O5	0.0833 (5)	0.2950 (3)	−0.5153 (3)	0.0421 (9)
O6	0.2710 (4)	0.1232 (3)	−0.4660 (3)	0.0353 (8)
S1	−0.20943 (15)	0.16850 (10)	−0.84628 (11)	0.0261 (3)
OW1	0.0538 (5)	0.4656 (4)	−0.3518 (4)	0.0460 (10)
H1A	0.072 (8)	0.403 (5)	−0.397 (5)	0.069*
H1B	0.021 (8)	0.542 (3)	−0.393 (5)	0.069*
OW2	0.2451 (5)	0.6472 (4)	0.1729 (4)	0.0449 (9)
H2A	0.230 (8)	0.686 (5)	0.100 (3)	0.067*
H2B	0.128 (3)	0.648 (3)	0.218 (4)	0.067*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Ag1	0.0586 (3)	0.0419 (3)	0.0292 (2)	−0.00358 (19)	−0.0243 (2)	−0.01205 (18)
Ag2	0.0527 (2)	0.0423 (3)	0.0330 (3)	0.00471 (18)	−0.0272 (2)	−0.01620 (19)
C1	0.026 (2)	0.019 (2)	0.022 (2)	0.0003 (17)	−0.009 (2)	−0.0059 (18)
C2	0.028 (2)	0.022 (2)	0.025 (3)	0.0019 (18)	−0.011 (2)	0.0001 (19)
C3	0.034 (2)	0.023 (2)	0.030 (3)	0.0092 (19)	−0.012 (2)	−0.010 (2)
C4	0.033 (2)	0.025 (3)	0.026 (3)	−0.0005 (19)	−0.012 (2)	−0.011 (2)
C5	0.026 (2)	0.022 (2)	0.020 (2)	0.0034 (18)	−0.010 (2)	−0.0069 (18)
C6	0.026 (2)	0.019 (2)	0.020 (2)	0.0019 (17)	−0.009 (2)	−0.0044 (18)
C7	0.033 (2)	0.029 (3)	0.021 (3)	−0.004 (2)	−0.013 (2)	−0.004 (2)
C8	0.040 (3)	0.025 (3)	0.032 (3)	0.003 (2)	−0.016 (2)	−0.007 (2)
C9	0.035 (2)	0.029 (3)	0.030 (3)	0.001 (2)	−0.017 (2)	−0.004 (2)
C10	0.041 (3)	0.028 (3)	0.032 (3)	0.006 (2)	−0.020 (2)	−0.010 (2)
C11	0.040 (3)	0.031 (3)	0.031 (3)	−0.001 (2)	−0.022 (2)	−0.002 (2)
C12	0.039 (3)	0.022 (3)	0.026 (3)	0.003 (2)	−0.011 (2)	−0.006 (2)
C13	0.039 (3)	0.026 (3)	0.026 (3)	0.003 (2)	−0.015 (2)	−0.005 (2)
N1	0.031 (2)	0.032 (2)	0.024 (2)	−0.0006 (17)	−0.0104 (18)	−0.0063 (18)
N2	0.030 (2)	0.033 (2)	0.026 (2)	−0.0027 (17)	−0.0116 (19)	−0.0080 (18)
N3	0.034 (2)	0.033 (2)	0.022 (2)	−0.0005 (17)	−0.0131 (19)	−0.0043 (18)
O1	0.076 (3)	0.092 (3)	0.077 (3)	0.056 (3)	−0.058 (3)	−0.059 (3)
O2	0.066 (3)	0.111 (4)	0.036 (3)	0.010 (3)	−0.025 (2)	0.012 (2)
O3	0.082 (3)	0.041 (3)	0.143 (5)	−0.019 (2)	−0.087 (4)	0.020 (3)
O4	0.0398 (18)	0.035 (2)	0.041 (2)	0.0159 (15)	−0.0263 (18)	−0.0129 (16)
O5	0.066 (2)	0.029 (2)	0.047 (2)	0.0100 (17)	−0.037 (2)	−0.0191 (17)
O6	0.0442 (19)	0.039 (2)	0.033 (2)	0.0043 (16)	−0.0252 (18)	−0.0135 (16)
S1	0.0345 (6)	0.0234 (6)	0.0274 (7)	0.0032 (5)	−0.0195 (5)	−0.0074 (5)
OW1	0.068 (3)	0.041 (2)	0.036 (2)	0.001 (2)	−0.026 (2)	−0.0095 (18)
OW2	0.059 (2)	0.039 (2)	0.039 (2)	0.0057 (18)	−0.020 (2)	−0.0083 (18)

Geometric parameters (Å, º) top

Ag1—N1	2.180 (3)	C8—H8	0.9300
Ag1—O3ⁱ	2.621 (3)	C9—N2	1.332 (5)
Ag1—O6	2.153 (3)	C9—H9	0.9300
Ag2—N2	2.245 (3)	C10—N2	1.346 (6)
Ag2—N3	2.262 (3)	C10—C11	1.368 (6)
Ag2—O1ⁱⁱ	2.516 (4)	C10—H10	0.9300
Ag2—OW2	2.576 (4)	C11—N1	1.343 (6)
C1—C2	1.395 (6)	C11—H11	0.9300
C1—C6	1.408 (5)	C12—N3	1.343 (5)
C1—C7	1.491 (6)	C12—C13ⁱⁱⁱ	1.369 (6)
C2—O4	1.360 (5)	C12—H12	0.9300
C2—C3	1.388 (6)	C13—N3	1.340 (5)
C3—C4	1.382 (6)	C13—C12ⁱⁱⁱ	1.369 (6)
C3—H3	0.9300	C13—H13	0.9300
C4—C5	1.392 (6)	O1—S1	1.415 (3)
C4—H4	0.9300	O2—S1	1.444 (5)
C5—C6	1.366 (5)	O3—S1	1.423 (4)
C5—S1	1.778 (4)	O4—H4A	0.8200
C6—H6	0.9300	OW1—H1A	0.88 (2)
C7—O5	1.241 (5)	OW1—H1B	0.89 (2)
C7—O6	1.281 (5)	OW2—H2A	0.88 (2)
C8—N1	1.335 (6)	OW2—H2B	0.89 (2)
C8—C9	1.383 (6)

O6—Ag1—N1	171.57 (13)	N2—C10—C11	122.4 (4)
N2—Ag2—N3	175.29 (14)	N2—C10—H10	118.8
N2—Ag2—O1ⁱⁱ	95.52 (12)	C11—C10—H10	118.8
N3—Ag2—O1ⁱⁱ	84.24 (12)	N1—C11—C10	121.9 (4)
N2—Ag2—OW2	89.83 (12)	N1—C11—H11	119.1
N3—Ag2—OW2	92.92 (12)	C10—C11—H11	119.1
O1ⁱⁱ—Ag2—OW2	147.05 (16)	N3—C12—C13ⁱⁱⁱ	121.9 (4)
C2—C1—C6	118.4 (3)	N3—C12—H12	119.0
C2—C1—C7	122.6 (4)	C13ⁱⁱⁱ—C12—H12	119.0
C6—C1—C7	119.0 (4)	N3—C13—C12ⁱⁱⁱ	122.3 (4)
O4—C2—C1	122.5 (3)	N3—C13—H13	118.8
O4—C2—C3	116.8 (4)	C12ⁱⁱⁱ—C13—H13	118.8
C1—C2—C3	120.8 (4)	C8—N1—C11	116.0 (4)
C4—C3—C2	119.8 (4)	C8—N1—Ag1	117.5 (3)
C4—C3—H3	120.1	C11—N1—Ag1	126.5 (3)
C2—C3—H3	120.1	C9—N2—C10	115.6 (4)
C3—C4—C5	119.8 (3)	C9—N2—Ag2	118.8 (3)
C3—C4—H4	120.1	C10—N2—Ag2	125.1 (3)
C5—C4—H4	120.1	C13—N3—C12	115.8 (4)
C6—C5—C4	120.6 (3)	C13—N3—Ag2	123.5 (3)
C6—C5—S1	120.4 (3)	C12—N3—Ag2	120.7 (3)
C4—C5—S1	119.1 (3)	S1—O1—Ag2^iv	139.7 (2)
C5—C6—C1	120.5 (4)	C2—O4—H4A	109.5
C5—C6—H6	119.7	C7—O6—Ag1	123.7 (3)
C1—C6—H6	119.7	O1—S1—O3	115.8 (3)
O5—C7—O6	124.1 (3)	O1—S1—O2	110.9 (3)
O5—C7—C1	120.2 (4)	O3—S1—O2	110.4 (3)
O6—C7—C1	115.6 (4)	O1—S1—C5	106.73 (19)
N1—C8—C9	121.9 (4)	O3—S1—C5	105.6 (2)
N1—C8—H8	119.1	O2—S1—C5	106.9 (2)
C9—C8—H8	119.1	H1A—OW1—H1B	110 (6)
N2—C9—C8	122.2 (4)	Ag2—OW2—H2A	128 (4)
N2—C9—H9	118.9	Ag2—OW2—H2B	107.5 (17)
C8—C9—H9	118.9	H2A—OW2—H2B	100 (5)

C6—C1—C2—O4	−176.7 (4)	C11—C10—N2—C9	−1.2 (7)
C7—C1—C2—O4	1.4 (7)	C11—C10—N2—Ag2	170.5 (4)
C6—C1—C2—C3	3.1 (7)	O1ⁱⁱ—Ag2—N2—C9	35.7 (4)
C7—C1—C2—C3	−178.8 (4)	OW2—Ag2—N2—C9	−176.9 (4)
O4—C2—C3—C4	177.1 (4)	O1ⁱⁱ—Ag2—N2—C10	−135.8 (4)
C1—C2—C3—C4	−2.7 (7)	OW2—Ag2—N2—C10	11.6 (4)
C2—C3—C4—C5	−0.4 (7)	C12ⁱⁱⁱ—C13—N3—C12	0.2 (8)
C3—C4—C5—C6	3.1 (7)	C12ⁱⁱⁱ—C13—N3—Ag2	−177.7 (3)
C3—C4—C5—S1	−176.0 (4)	C13ⁱⁱⁱ—C12—N3—C13	−0.2 (8)
C4—C5—C6—C1	−2.6 (7)	C13ⁱⁱⁱ—C12—N3—Ag2	177.8 (3)
S1—C5—C6—C1	176.4 (3)	O1ⁱⁱ—Ag2—N3—C13	147.0 (4)
C2—C1—C6—C5	−0.4 (7)	OW2—Ag2—N3—C13	−0.1 (4)
C7—C1—C6—C5	−178.6 (4)	O1ⁱⁱ—Ag2—N3—C12	−30.8 (4)
C2—C1—C7—O5	174.9 (5)	OW2—Ag2—N3—C12	−177.9 (4)
C6—C1—C7—O5	−7.0 (7)	O5—C7—O6—Ag1	15.5 (7)
C2—C1—C7—O6	−4.6 (7)	C1—C7—O6—Ag1	−165.0 (3)
C6—C1—C7—O6	173.5 (4)	Ag2^iv—O1—S1—O3	−50.2 (6)
N1—C8—C9—N2	1.2 (7)	Ag2^iv—O1—S1—O2	76.5 (5)
N2—C10—C11—N1	0.5 (7)	Ag2^iv—O1—S1—C5	−167.4 (4)
C9—C8—N1—C11	−1.8 (7)	C6—C5—S1—O1	−8.2 (5)
C9—C8—N1—Ag1	176.7 (3)	C4—C5—S1—O1	170.9 (4)
C10—C11—N1—C8	1.0 (7)	C6—C5—S1—O3	−132.0 (4)
C10—C11—N1—Ag1	−177.4 (4)	C4—C5—S1—O3	47.1 (5)
C8—C9—N2—C10	0.3 (7)	C6—C5—S1—O2	110.5 (4)
C8—C9—N2—Ag2	−171.9 (3)	C4—C5—S1—O2	−70.4 (4)

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

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
OW1—H1A···O5	0.88 (2)	1.89 (2)	2.751 (4)	168 (6)
OW1—H1B···O5^v	0.89 (2)	2.00 (2)	2.883 (5)	173 (6)
OW2—H2A···O2^v	0.88 (2)	1.91 (3)	2.757 (5)	161 (6)
OW2—H2B···OW1^vi	0.89 (2)	2.03 (3)	2.794 (6)	143 (2)
O4—H4A···O6	0.82	1.84	2.556 (4)	146

Symmetry codes: (v) −x, −y+1, −z−1; (vi) −x, −y+1, −z.

Experimental details

Crystal data
Chemical formula	[Ag₄(C₇H₄O₆S)₂(C₄H₄N₂)₃(H₂O)₂]·2H₂O
M_r	1176.14
Crystal system, space group	Triclinic, P1
Temperature (K)	293
a, b, c (Å)	7.646 (5), 10.340 (4), 11.375 (4)
α, β, γ (°)	78.751 (3), 73.436 (4), 82.882 (5)
V (Å³)	843.2 (7)
Z	1
Radiation type	Mo Kα
µ (mm⁻¹)	2.50
Crystal size (mm)	0.21 × 0.15 × 0.12

Data collection
Diffractometer	Bruker APEX CCD diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 1996)
T_min, T_max	0.622, 0.754
No. of measured, independent and observed [I > 2σ(I)] reflections	7253, 3387, 2190
R_int	0.058
(sin θ/λ)_max (Å⁻¹)	0.650

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.033, 0.073, 0.88
No. of reflections	3387
No. of parameters	256
No. of restraints	5
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.70, −1.09

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	2.180 (3)	Ag2—N3	2.262 (3)
Ag1—O3ⁱ	2.621 (3)	Ag2—O1ⁱⁱ	2.516 (4)
Ag1—O6	2.153 (3)	Ag2—OW2	2.576 (4)
Ag2—N2	2.245 (3)

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

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
OW1—H1A···O5	0.88 (2)	1.89 (2)	2.751 (4)	168 (6)
OW1—H1B···O5ⁱⁱⁱ	0.89 (2)	2.00 (2)	2.883 (5)	173 (6)
OW2—H2A···O2ⁱⁱⁱ	0.88 (2)	1.91 (3)	2.757 (5)	161 (6)
OW2—H2B···OW1^iv	0.89 (2)	2.03 (3)	2.794 (6)	143 (2)
O4—H4A···O6	0.82	1.84	2.556 (4)	146

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

Acknowledgements

We thank the China Postdoctoral Science Foundation (20100471379) for support.

References

Brandenburg, K. (1999). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Bruker (2007). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Nie, X. & Qu, J.-N. (2011). Acta Cryst. E67, m1107–m1108. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (1996). 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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