The silver(I) nitrate complex of the ligand N-(pyridin-2-ylmeth­yl)pyrazine-2-carboxamide: a metal–organic framework (MOF) structure

Cati, D.S.; Stoeckli-Evans, H.

doi:10.1107/S2056989017003930

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Volume 73| Part 4| April 2017| Pages 535-538

https://doi.org/10.1107/S2056989017003930

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The silver(I) nitrate complex of the ligand N-(pyridin-2-ylmethyl)pyrazine-2-carboxamide: a metal–organic framework (MOF) structure

Dilovan S. Cati ^a and Helen Stoeckli-Evans ^b ^*

^aDebiopharm International S.A., Chemin Messidor 5-7, CP 5911, CH-1002 Lausanne, Switzerland, and ^bInstitute of Physics, University of Neuchâtel, rue Emile-Argand 11, CH-2000 Neuchâtel, Switzerland
^*Correspondence e-mail: helen.stoeckli-evans@unine.ch

Edited by M. Zeller, Purdue University, USA (Received 9 March 2017; accepted 10 March 2017; online 21 March 2017)

The reaction of silver(I) nitrate with the mono-substituted pyrazine carboxamide ligand, N-(pyridin-2-ylmethyl)pyrazine-2-carboxamide (L), led to the formation of the title compound with a metal–organic framework (MOF) structure, [Ag(C₁₁H₁₀N₄O)(NO₃)]_n, poly[μ-nitrato-[μ-N-(pyridin-2-ylmethyl-κN)pyrazine-2-carboxamide-κN⁴]silver(I)]. The silver(I) atom is coordinated by a pyrazine N atom, a pyridine N atom, and two O atoms of two symmetry-related nitrate anions. It has a fourfold N₂O₂ coordination sphere, which can be described as distorted trigonal–pyramidal. The ligands are bridged by the silver atoms forming –Ag–L–Ag–L– zigzag chains along the a-axis direction. The chains are arranged in pairs related by a twofold screw axis. They are linked via the nitrate anions, which bridge the silver(I) atoms in a μ₂ fashion, forming the MOF structure. Within the framework there are N—H⋯O and C—H⋯O hydrogen bonds present.

Keywords: crystal structure; metal-organic framework; MOF; silver(I); pyrazine; carboximide; pyridine; nitrate; hydrogen bonding.

CCDC reference: 1537331

1. Chemical context

We have shown recently that by using silver(I) nitrate and various tetrakis-substituted pyrazine ligands, one-, two- and three-dimensional coordination polymers can be formed (Assoumatine & Stoeckli-Evans, 2017 ). In the present report, the mono-substituted pyrazine carboxamide ligand, N-(pyridin-2-ylmethyl)pyrazine-2-carboxamide (L), whose crystal structure has been reported (Cati & Stoeckli-Evans, 2014 ), was reacted with silver(I) nitrate and led to the formation of a new compound with a metal–organic framework (MOF) structure, (I).

2. Structural commentary

The molecular structure of the asymmetric unit of compound (I) is illustrated in Fig. 1. Selected bond lengths and angles involving the Ag1 atom are given in Table 1. Atom Ag1 is coordinated by a pyrazine N atom, N2, the pyridine N atom, N4, and two O atoms, O11 and O12, of two symmetry-related nitrate anions (Fig. 1 and Table 1). Therefore, atom Ag1 has a fourfold N₂O₂ coordination sphere and a distorted trigonal–pyramidal geometry with a τ₄ parameter = 0.72 (τ₄ = 1 for a perfect tetrahedral geometry, 0 for a perfect square-planar geometry; for intermediate structures, including trigonal–pyramidal and seesaw, the values of τ₄ fall within the range of 0 to 1.0; Yang et al., 2007 ). Atom O13 of the nitrate anion lies above atom Ag1 with a distance Ag1⋯O13 of 2.864 (11) Å. The ligands are bridged by the silver atoms, forming –Ag–L–Ag–L– zigzag chains propagating along the a-axis direction (Fig. 2 and Table 1). They are arranged in pairs related by a twofold screw axis (Fig. 2).

Table 1
Selected geometric parameters (Å, °)

Ag1—N2ⁱ	2.238 (7)	Ag1—O12ⁱⁱ	2.520 (9)
Ag1—N4	2.259 (8)	Ag1—O13	2.864 (8)
Ag1—O11	2.498 (9)

N2ⁱ—Ag1—N4	140.8 (3)	N2ⁱ—Ag1—O12ⁱⁱ	115.0 (3)
N2ⁱ—Ag1—O11	117.1 (3)	N4—Ag1—O12ⁱⁱ	89.9 (4)
N4—Ag1—O11	98.5 (3)	O11—Ag1—O12ⁱⁱ	72.6 (3)
Symmetry codes: (i) $[x-{\script{1\over 2}}, -y, z]$ ; (ii) $[-x, -y+1, z+{\script{1\over 2}}]$ .

Figure 1
A view of the molecular structure of the asymmetric unit of the title compound (I)

, with atom labelling. Displacement ellipsoids are drawn at the 50% probability level. For this figure, the symmetry codes are: (i) x − $[{1\over 2}]$ , −y, z; (ii) −x, −y + 1, z + $[{1\over 2}]$ ; (iii) −x, −y + 1, z − $[{1\over 2}]$ ; (iv) x + $[{1\over 2}]$ , −y, z.

Figure 2
A view along the c axis of the –Ag–L–Ag–L zigzag chains propagating along the a-axis direction (silver atoms are grey balls and H atoms have been omitted for clarity).

3. Supramolecular features

In the crystal of (I), the chains are bridged by the nitrate anions, leading to the formation of the three-dimensional framework structure (Figs. 3 and 4). The nitrate anions bridge the silver atoms in a μ₂ manner (Fig. 4), one of the many ways in which the nitrate anion interacts with silver atoms (Cambridge Structural Database; Groom et al., 2016 ). Its role here is essential in forming the MOF structure.

Figure 3
A view along the c axis of (I)

. The H atoms have been omitted for clarity, and the silver atoms and the nitrate anions are shown as balls.

Figure 4
A view along the a axis of (I)

. The H atoms have been omitted for clarity, and the silver atoms and the nitrate anions are shown as balls.

Within the framework, there is an N—H⋯O hydrogen bond linking the amine group and carbonyl O atom of twofold-screw-related chains. There is also a C—H⋯O hydrogen bond present involving a pyrazine H atom and the third O atom of the nitrate anion, O13 (Table 2). There are small voids of ca 68 Å³ in the framework structure, equivalent to 4.8% of the volume of the unit cell.

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N3—H3N⋯O1ⁱⁱⁱ	0.87 (3)	2.35 (12)	2.914 (12)	123 (11)
C2—H2⋯O13^iv	0.94	2.59	3.330 (15)	136
Symmetry codes: (iii) $[-x+{\script{1\over 2}}, y, z+{\script{1\over 2}}]$ ; (iv) $[x+{\script{1\over 2}}, -y, z]$ .

4. Database survey

A search of the Cambridge Structural Database (Version 5.38, update February 2017; Groom et al., 2016) for the title ligand (L) gave 15 hits. These include a report of the crystal structure of (L) (Cati & Stoeckli-Evans, 2014), and that of a silver(I) BF₄⁻ coordination polymer (PORZOM; Hellyer et al., 2009 ). Here the ligand bridges the silver(I) atoms, coordinating in a bidentate (via the pyridine N atom and the carbonyl O atom) and monodentate (to a pyrazine N atom) fashion, forming zigzag chains along [010]. The chains are linked by Ag⋯Ag contacts, of ca 3.32 Å, forming slabs (or metal–organic networks) lying parallel to the bc plane. The remainder of the hits in the above search are mainly first row transition metal complexes or coordination polymers.

5. Synthesis and crystallization

The synthesis of the ligand (L) has been described previously (Cati & Stoeckli-Evans, 2014). Ligand (L) (27 mg, 0.126 mmol) and AgNO₃ (43 mg, 0.252 mmol) were introduced into 15 ml of acetonitrile in a two-necked flask (100 ml), isolated from the light by aluminium foil. The solution was refluxed for 5 h. The resulting limpid solution was filtered and the filtrate allowed to stand at room temperature. Colourless plate-like crystals were obtained in a few days (yield 42 mg, 87%).

Spectroscopic data: IR (KBr disc, cm⁻¹): 3330 (s), 3063 (m), 1670 (vs), 1656 (vs), 1598 (s), 1571 (s), 1538 (vs), 1520 (vs), 1473 (s), 1463 (s), 1386 (b and vs), 1327 (vs), 1289 (vs), 1158 (s), 1101 (m), 1064 (m), 1023 (s), 877 (w), 825 (m), 776 (m), 706 (m), 667 (s), 611 (m), 533 (m), 456 (m). The broad and very strong absorption band at 1386 cm⁻¹ indicates the presence of a coordinating nitrate anion. Elemental Analysis for AgC₁₁H₁₀N₅O₄ (M_r = 384.10 g mol⁻¹): Calculated: C 34.40; H 2.62; N, 18.23%; found: C 34.58; H 2.55; N 18.05%.

6. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 3. The NH H atom was located in a difference-Fourier map and freely refined. The C-bound H atoms were included in calculated positions and treated as riding: C—H = 0.94–0.98 Å with U_iso(H) = 1.2U_eq(C).

Table 3
Experimental details

Crystal data
Chemical formula	[Ag(C₁₁H₁₀N₄O)(NO₃)]
M_r	384.11
Crystal system, space group	Orthorhombic, Pca2₁
Temperature (K)	223
a, b, c (Å)	17.522 (3), 8.9559 (18), 8.9860 (13)
V (Å³)	1410.1 (4)
Z	4
Radiation type	Mo Kα
μ (mm⁻¹)	1.45
Crystal size (mm)	0.68 × 0.61 × 0.08

Data collection
Diffractometer	STOE–Siemens AED2 four-circle
Absorption correction	Multi-scan (MULABS; Spek, 2009 )
T_min, T_max	0.910, 1.000
No. of measured, independent and observed [I > 2σ(I)] reflections	3655, 2628, 2384
R_int	0.022
(sin θ/λ)_max (Å⁻¹)	0.605

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.047, 0.128, 1.10
No. of reflections	2628
No. of parameters	194
No. of restraints	2
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	1.04, −1.56
Absolute structure	Flack x determined using 1006 quotients [(I⁺)−(I⁻)]/[(I⁺)+(I⁻)] (Parsons et al., 2013 )
Absolute structure parameter	−0.06 (2)
Computer programs: STADI4 and X-RED (Stoe & Cie, 1997 ), SHELXS97 (Sheldrick, 2008 ), SHELXL2014/6 (Sheldrick, 2015 ), PLATON (Spek, 2009), Mercury (Macrae et al., 2008 ) and publCIF (Westrip, 2010 ).

Supporting information

CCDC reference: 1537331

Crystal structure: contains datablocks I, Global. DOI: https://doi.org/10.1107/S2056989017003930/zl2699sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2056989017003930/zl2699Isup2.hkl

checkCIF report

Computing details top

Data collection: STADI4 (Stoe & Cie, 1997); cell refinement: STADI4 (Stoe & Cie, 1997); data reduction: X-RED (Stoe & Cie, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014/6 (Sheldrick, 2015); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL2014/6 (Sheldrick, 2015), PLATON (Spek, 2009) and publCIF (Westrip, 2010).

Poly[µ-nitrato-[µ-N-(pyridin-2-ylmethyl-κN)pyrazine-2-carboxamide-κN⁴]silver(I)] top

Crystal data top

[Ag(C₁₁H₁₀N₄O)(NO₃)]	D_x = 1.809 Mg m⁻³
M_r = 384.11	Mo Kα radiation, λ = 0.71073 Å
Orthorhombic, Pca2₁	Cell parameters from 20 reflections
a = 17.522 (3) Å	θ = 10.0–13.4°
b = 8.9559 (18) Å	µ = 1.45 mm⁻¹
c = 8.9860 (13) Å	T = 223 K
V = 1410.1 (4) Å³	Plate, colourles
Z = 4	0.68 × 0.61 × 0.08 mm
F(000) = 760

Data collection top

STOE–Siemens AED2 four-circle diffractometer	2384 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	R_int = 0.022
Plane graphite monochromator	θ_max = 25.5°, θ_min = 2.3°
ω/2θ scans	h = −21→21
Absorption correction: multi-scan (MULABS; Spek, 2009)	k = −10→10
T_min = 0.910, T_max = 1.000	l = −10→10
3655 measured reflections	2 standard reflections every 60 min
2628 independent reflections	intensity decay: 3%

Refinement top

Refinement on F²	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: mixed
R[F² > 2σ(F²)] = 0.047	H atoms treated by a mixture of independent and constrained refinement
wR(F²) = 0.128	w = 1/[σ²(F_o²) + (0.0872P)² + 0.889P] where P = (F_o² + 2F_c²)/3
S = 1.10	(Δ/σ)_max < 0.001
2628 reflections	Δρ_max = 1.04 e Å⁻³
194 parameters	Δρ_min = −1.56 e Å⁻³
2 restraints	Absolute structure: Flack x determined using 1006 quotients [(I⁺)-(I^-)]/[(I⁺)+(I^-)] (Parsons et al., 2013)
Primary atom site location: structure-invariant direct methods	Absolute structure parameter: −0.06 (2)

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.

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

	x	y	z	U_iso*/U_eq
Ag1	0.05137 (3)	0.36456 (6)	0.69187 (15)	0.0402 (3)
N1	0.3810 (5)	−0.0242 (8)	0.9863 (8)	0.0371 (16)
N2	0.4836 (4)	−0.1928 (9)	0.8154 (8)	0.0338 (15)
N3	0.2698 (5)	0.1329 (10)	0.8498 (9)	0.048 (2)
H3N	0.279 (8)	0.131 (14)	0.945 (5)	0.08 (5)*
N4	0.1730 (4)	0.4408 (9)	0.6583 (9)	0.045 (2)
O1	0.3124 (5)	0.0642 (12)	0.6234 (8)	0.048 (2)
C1	0.3775 (5)	−0.0301 (10)	0.8352 (9)	0.0322 (17)
C2	0.4271 (6)	−0.1143 (9)	0.7518 (11)	0.0336 (18)
H2	0.421457	−0.116833	0.647769	0.040*
C3	0.4894 (6)	−0.1818 (12)	0.9640 (11)	0.039 (2)
H3	0.529260	−0.232096	1.013043	0.047*
C4	0.4380 (6)	−0.0979 (12)	1.0473 (10)	0.038 (2)
H4	0.444189	−0.093686	1.151129	0.045*
C5	0.3163 (7)	0.0593 (13)	0.7613 (12)	0.039 (3)
C6	0.2071 (5)	0.2203 (12)	0.7917 (11)	0.044 (2)
H6B	0.171943	0.242975	0.873408	0.053*
H6A	0.179317	0.159729	0.718878	0.053*
C7	0.2304 (5)	0.3641 (9)	0.7190 (11)	0.040 (3)
C8	0.3053 (5)	0.4149 (12)	0.706 (2)	0.057 (3)
H8	0.345961	0.359520	0.745841	0.068*
C9	0.3187 (7)	0.5463 (16)	0.6332 (18)	0.074 (4)
H9	0.368904	0.582281	0.625229	0.088*
C10	0.2607 (11)	0.6256 (14)	0.573 (3)	0.086 (5)
H10	0.269429	0.716443	0.523371	0.103*
C11	0.1881 (7)	0.5672 (14)	0.5870 (18)	0.067 (3)
H11	0.147229	0.619736	0.543869	0.081*
N10	−0.0058 (5)	0.3498 (9)	0.3740 (9)	0.0390 (18)
O11	−0.0039 (7)	0.4610 (9)	0.4543 (11)	0.072 (3)
O12	−0.0112 (8)	0.3691 (9)	0.2369 (8)	0.074 (3)
O13	−0.0028 (7)	0.2247 (10)	0.4254 (12)	0.085 (4)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Ag1	0.0352 (4)	0.0473 (4)	0.0380 (4)	−0.0043 (2)	−0.0034 (4)	0.0055 (5)
N1	0.048 (4)	0.039 (4)	0.023 (3)	0.006 (3)	0.003 (3)	0.001 (3)
N2	0.036 (4)	0.037 (4)	0.028 (4)	0.006 (3)	−0.004 (3)	−0.001 (3)
N3	0.043 (5)	0.073 (6)	0.027 (4)	0.021 (4)	0.004 (4)	0.010 (4)
N4	0.037 (4)	0.046 (4)	0.051 (6)	0.001 (3)	−0.004 (3)	0.010 (4)
O1	0.047 (5)	0.074 (6)	0.024 (5)	0.017 (5)	0.001 (3)	0.006 (4)
C1	0.031 (4)	0.039 (4)	0.027 (4)	0.002 (3)	0.000 (3)	0.003 (3)
C2	0.037 (4)	0.036 (4)	0.028 (4)	0.000 (4)	−0.006 (4)	−0.001 (3)
C3	0.047 (6)	0.042 (5)	0.029 (5)	−0.004 (4)	−0.003 (4)	0.006 (4)
C4	0.043 (5)	0.047 (5)	0.024 (4)	0.002 (4)	−0.003 (3)	0.000 (4)
C5	0.040 (6)	0.043 (6)	0.034 (7)	0.003 (5)	0.001 (5)	0.007 (5)
C6	0.033 (5)	0.061 (6)	0.039 (5)	0.011 (4)	0.004 (4)	0.006 (4)
C7	0.036 (5)	0.049 (5)	0.035 (8)	0.000 (3)	−0.001 (4)	−0.004 (4)
C8	0.036 (4)	0.057 (5)	0.077 (8)	0.005 (4)	0.001 (7)	−0.011 (8)
C9	0.039 (6)	0.067 (8)	0.115 (13)	−0.007 (6)	0.004 (6)	−0.015 (7)
C10	0.079 (10)	0.055 (8)	0.125 (15)	−0.016 (7)	0.014 (10)	0.029 (8)
C11	0.051 (7)	0.053 (7)	0.098 (10)	0.001 (5)	0.005 (6)	0.031 (7)
N10	0.040 (4)	0.048 (5)	0.029 (4)	0.009 (3)	−0.001 (3)	0.002 (3)
O11	0.106 (7)	0.061 (6)	0.048 (4)	0.025 (6)	−0.024 (4)	−0.021 (5)
O12	0.135 (10)	0.064 (6)	0.022 (4)	0.005 (5)	0.012 (4)	0.004 (3)
O13	0.147 (11)	0.046 (5)	0.062 (6)	0.012 (6)	−0.008 (7)	0.011 (5)

Geometric parameters (Å, º) top

Ag1—N2ⁱ	2.238 (7)	C3—C4	1.392 (16)
Ag1—N4	2.259 (8)	C3—H3	0.9400
Ag1—O11	2.498 (9)	C4—H4	0.9400
Ag1—O12ⁱⁱ	2.520 (9)	C6—C7	1.500 (13)
Ag1—O13	2.864 (8)	C6—H6B	0.9800
N1—C4	1.317 (12)	C6—H6A	0.9800
N1—C1	1.360 (11)	C7—C8	1.395 (14)
N2—C2	1.342 (12)	C8—C9	1.36 (2)
N2—C3	1.343 (12)	C8—H8	0.9400
N3—C5	1.316 (14)	C9—C10	1.35 (2)
N3—C6	1.445 (12)	C9—H9	0.9400
N3—H3N	0.87 (3)	C10—C11	1.38 (2)
N4—C11	1.327 (14)	C10—H10	0.9400
N4—C7	1.334 (12)	C11—H11	0.9400
O1—C5	1.242 (10)	N10—O13	1.212 (12)
C1—C2	1.373 (13)	N10—O11	1.231 (12)
C1—C5	1.494 (14)	N10—O12	1.248 (11)
C2—H2	0.9400

N2ⁱ—Ag1—N4	140.8 (3)	O1—C5—C1	120.1 (11)
N2ⁱ—Ag1—O11	117.1 (3)	N3—C5—C1	116.4 (9)
N4—Ag1—O11	98.5 (3)	N3—C6—C7	114.6 (8)
N2ⁱ—Ag1—O12ⁱⁱ	115.0 (3)	N3—C6—H6B	108.6
N4—Ag1—O12ⁱⁱ	89.9 (4)	C7—C6—H6B	108.6
O11—Ag1—O12ⁱⁱ	72.6 (3)	N3—C6—H6A	108.6
C4—N1—C1	115.5 (8)	C7—C6—H6A	108.6
C2—N2—C3	116.2 (8)	H6B—C6—H6A	107.6
C2—N2—Ag1ⁱⁱⁱ	122.7 (6)	N4—C7—C8	120.4 (9)
C3—N2—Ag1ⁱⁱⁱ	120.2 (7)	N4—C7—C6	114.6 (8)
C5—N3—C6	121.5 (9)	C8—C7—C6	125.0 (9)
C5—N3—H3N	118 (9)	C9—C8—C7	118.9 (11)
C6—N3—H3N	121 (9)	C9—C8—H8	120.5
C11—N4—C7	119.2 (9)	C7—C8—H8	120.5
C11—N4—Ag1	120.6 (7)	C10—C9—C8	121.0 (12)
C7—N4—Ag1	120.0 (6)	C10—C9—H9	119.5
N1—C1—C2	122.5 (8)	C8—C9—H9	119.5
N1—C1—C5	117.0 (8)	C9—C10—C11	117.2 (12)
C2—C1—C5	120.4 (8)	C9—C10—H10	121.4
N2—C2—C1	121.4 (9)	C11—C10—H10	121.4
N2—C2—H2	119.3	N4—C11—C10	123.4 (12)
C1—C2—H2	119.3	N4—C11—H11	118.3
N2—C3—C4	121.6 (10)	C10—C11—H11	118.3
N2—C3—H3	119.2	O13—N10—O11	121.5 (10)
C4—C3—H3	119.2	O13—N10—O12	120.5 (9)
N1—C4—C3	122.5 (9)	O11—N10—O12	118.0 (9)
N1—C4—H4	118.7	N10—O11—Ag1	103.4 (6)
C3—C4—H4	118.7	N10—O12—Ag1^iv	108.1 (6)
O1—C5—N3	123.5 (12)

C4—N1—C1—C2	3.7 (14)	C11—N4—C7—C8	−1.0 (16)
C4—N1—C1—C5	−176.6 (9)	Ag1—N4—C7—C8	−176.5 (9)
C3—N2—C2—C1	−1.3 (14)	C11—N4—C7—C6	−177.8 (11)
Ag1ⁱⁱⁱ—N2—C2—C1	167.9 (6)	Ag1—N4—C7—C6	6.7 (11)
N1—C1—C2—N2	−1.7 (14)	N3—C6—C7—N4	176.6 (9)
C5—C1—C2—N2	178.5 (9)	N3—C6—C7—C8	−0.1 (15)
C2—N2—C3—C4	2.3 (15)	N4—C7—C8—C9	2 (2)
Ag1ⁱⁱⁱ—N2—C3—C4	−167.2 (7)	C6—C7—C8—C9	178.3 (13)
C1—N1—C4—C3	−2.7 (14)	C7—C8—C9—C10	−1 (2)
N2—C3—C4—N1	−0.2 (16)	C8—C9—C10—C11	0 (3)
C6—N3—C5—O1	3 (2)	C7—N4—C11—C10	−1 (2)
C6—N3—C5—C1	−178.4 (9)	Ag1—N4—C11—C10	174.9 (14)
N1—C1—C5—O1	176.6 (13)	C9—C10—C11—N4	1 (3)
C2—C1—C5—O1	−3.7 (19)	O13—N10—O11—Ag1	19.1 (14)
N1—C1—C5—N3	−1.8 (15)	O12—N10—O11—Ag1	−160.9 (10)
C2—C1—C5—N3	178.0 (10)	O13—N10—O12—Ag1^iv	164.7 (9)
C5—N3—C6—C7	−73.6 (14)	O11—N10—O12—Ag1^iv	−15.2 (14)

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

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
N3—H3N···O1^v	0.87 (3)	2.35 (12)	2.914 (12)	123 (11)
C2—H2···O13ⁱⁱⁱ	0.94	2.59	3.330 (15)	136

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

Funding information

Funding for this research was provided by: Swiss National Science Foundation; University of Neuchâtel.

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