Poly[[aqua-bis(μ(3)-isonicotinato-κO:O':N)tris-(μ(2)-isonicotinato-κO,O':N)(nitrato-κO)bis-(μ(4)-oxalato-κO,O:O:O,O:O)dierbium(III)tetra-silver(I)] tetra-hydrate].

In the title coordination polymer, {[Ag(4)Er(2)(C(6)H(4)NO(2))(5)(C(2)O(4))(2)(NO(3))(H(2)O)]·4H(2)O}(n), each Er(III) atom is coordinated in a bicapped trigonal-prismatic coordination geometry by three O atoms from two isonicotinate (IN) ligands, four O atoms from two oxalate ligands and one O atom from either a nitrate ion or a water mol-ecule, both of which are half-occupied over the same site. One Ag(I) atom has a Y-shaped geometry defined by one N atom from one IN ligand, one O atom from another IN ligand and one O atom from an oxalate ligand. The other Ag(I) atom is coordinated by two IN ligands and one O atom from an oxalate ligand. One of the IN ligands is disordered over an inversion center and forms a bridge between two centrosymmetric Ag(I) ions. Due to the disorder, this IN ligand coordinates to the Ag atom through either the pyridyl N or the carboxyl-ate O atoms. The IN and oxalate ligands link the Er and Ag atoms into a three-dimensional coordination framework. O-H⋯O and C-H⋯O hydrogen bonds are observed in the crystal structure.

Related literature

For general background to coordination polymers and open framework materials, see: Barbour (2006 ▶); Kepert (2006 ▶); Kong et al. (2008 ▶); Rao et al. (2004 ▶); Zhang et al. (2005 ▶). For background to isonicotinate complexes, see: Gheorghe et al. (2002 ▶).

Experimental

Crystal data

[Ag4Er2(C6H4NO2)5(C2O4)2(NO3)(H2O)]·4n class="Chemical">H2O

M = 1704.64

Triclinic,

a = 8.8561 (8) Å

b = 11.6428 (8) Å

c = 11.9597 (9) Å

α = 76.940 (1)°

β = 76.612 (1)°

γ = 76.035 (1)°

V = 1145.14 (16) Å3

Z = 1

Mo Kα radiation

μ = 5.40 mm−1

T = 296 K

0.30 × 0.25 × 0.21 mm

Data collection

Bruker APEXII CCD diffractometer

Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.224, T max = 0.336

5823 measured reflections

4043 independent reflections

3265 reflections with I > 2σ(I)

R int = 0.028

Refinement

R[F 2 > 2σ(F 2)] = 0.053

wR(F 2) = 0.128

S = 1.06

4043 reflections

377 parameters

95 restraints

H-atom parameters constrained

Δρmax = 1.57 e Å−3

Δρmin = −1.32 e Å−3

Data collection: APEX2 (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: SHELXTL (Sheldrick, 2008 ▶) and n class="Disease">DIAMOND (Brandenburg, 1999 ▶); software used to prepare material for publication: SHELXTL.

Crystal structure: contains datablocks I, global. DOI: 10.1107/S160053680901842X/hy2195sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S160053680901842X/hy2195Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

[Ag4Er2(C6H4NO2)5(C2O4)2(NO3)(H2O)]·4H2O	Z = 1
Mr = 1704.64	F(000) = 808
Triclinic, P1	Dx = 2.472 Mg m−3
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 8.8561 (8) Å	Cell parameters from 2895 reflections
b = 11.6428 (8) Å	θ = 2.4–27.9°
c = 11.9597 (9) Å	µ = 5.40 mm−1
α = 76.940 (1)°	T = 296 K
β = 76.612 (1)°	Block, colorless
γ = 76.035 (1)°	0.30 × 0.25 × 0.21 mm
V = 1145.14 (16) Å3

Bruker APEXII CCD diffractometer	4043 independent reflections
Radiation source: fine-focus sealed tube	3265 reflections with I > 2σ(I)
graphite	Rint = 0.028
φ and ω scans	θmax = 25.2°, θmin = 1.8°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −10→10
Tmin = 0.224, Tmax = 0.336	k = −9→13
5823 measured reflections	l = −12→14

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)] = 0.053	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.128	H-atom parameters constrained
S = 1.06	w = 1/[σ2(Fo2) + (0.0536P)2 + 8.9026P] where P = (Fo2 + 2Fc2)/3
4043 reflections	(Δ/σ)max = 0.001
377 parameters	Δρmax = 1.57 e Å−3
95 restraints	Δρmin = −1.32 e Å−3

	x	y	z	Uiso*/Ueq	Occ. (<1)
Er1	0.75631 (5)	0.84475 (4)	1.13533 (4)	0.02560 (13)
Ag1	1.03061 (11)	0.73575 (8)	0.83111 (8)	0.0482 (3)
Ag2	0.34657 (11)	0.20986 (8)	1.22733 (8)	0.0471 (2)
C1	1.0226 (11)	0.9620 (8)	0.9516 (8)	0.027 (2)
C2	0.4797 (11)	1.0449 (8)	1.0425 (8)	0.027 (2)
C3	1.5447 (11)	0.8125 (8)	0.3439 (9)	0.029 (2)
C4	1.4291 (12)	0.7896 (9)	0.4583 (9)	0.034 (3)
C5	1.4180 (12)	0.8533 (8)	0.5437 (9)	0.034 (3)
H5	1.4845	0.9070	0.5338	0.041*
C6	1.3046 (12)	0.8368 (8)	0.6469 (9)	0.035 (3)
H6	1.2931	0.8834	0.7031	0.042*
C7	1.2262 (14)	0.6927 (10)	0.5844 (10)	0.046 (3)
H7	1.1616	0.6370	0.5969	0.056*
C8	1.3334 (13)	0.7052 (10)	0.4786 (10)	0.044 (3)
H8	1.3407	0.6585	0.4232	0.053*
C9	0.8121 (10)	0.5945 (8)	1.0183 (9)	0.029 (2)
C10	0.7093 (11)	0.5019 (8)	1.0682 (9)	0.030 (2)
C11	0.5937 (12)	0.5111 (9)	1.1686 (10)	0.042 (3)
H11	0.5839	0.5735	1.2082	0.050*
C12	0.4945 (13)	0.4316 (9)	1.2108 (10)	0.040 (3)
H12	0.4167	0.4421	1.2769	0.048*
C13	0.6205 (13)	0.3255 (10)	1.0633 (10)	0.043 (3)
H13	0.6291	0.2613	1.0264	0.052*
C14	0.7232 (13)	0.4003 (9)	1.0175 (10)	0.039 (3)
H14	0.8023	0.3851	0.9532	0.046*
N1	1.2105 (10)	0.7535 (8)	0.6665 (8)	0.038 (2)
N2	0.5076 (10)	0.3372 (7)	1.1577 (7)	0.032 (2)
O1	0.9558 (8)	0.8752 (6)	0.9658 (6)	0.0322 (17)
O2	1.1251 (8)	0.9947 (6)	0.8621 (6)	0.0335 (17)
O3	0.5567 (8)	1.0219 (5)	1.1240 (6)	0.0308 (16)
O4	0.3750 (8)	1.1387 (6)	1.0208 (6)	0.0323 (16)
O5	1.5301 (8)	0.7718 (6)	0.2569 (6)	0.0358 (18)
O6	1.6484 (8)	0.8716 (7)	0.3354 (6)	0.0425 (19)
O7	0.8188 (8)	0.6624 (6)	1.0829 (6)	0.0359 (18)
O8	0.8790 (8)	0.5966 (6)	0.9143 (6)	0.0387 (18)
O11	0.9834 (9)	0.7560 (8)	1.2154 (8)	0.057 (2)
H11A	1.0281	0.7809	1.2572	0.085*	0.50
H11B	0.9946	0.6776	1.2434	0.085*	0.50
N3	0.995 (4)	0.651 (2)	1.281 (2)	0.085 (8)	0.50
O12	0.860 (3)	0.612 (2)	1.318 (2)	0.088 (7)	0.50
O13	1.125 (3)	0.595 (3)	1.313 (3)	0.133 (12)	0.50
O14	0.209 (2)	0.3871 (14)	0.4571 (16)	0.063 (5)	0.50
H14A	0.1251	0.3651	0.4575	0.095*	0.50
H14B	0.1868	0.4304	0.5088	0.095*	0.50
O15	1.035 (3)	0.5205 (17)	1.2890 (18)	0.078 (6)	0.50
H15A	1.0173	0.4989	1.2315	0.117*	0.50
H15B	1.1234	0.4801	1.3018	0.117*	0.50
O16	0.7488 (11)	0.1435 (8)	0.8439 (9)	0.080 (3)
H16A	0.8223	0.1814	0.8284	0.120*
H16B	0.6798	0.1831	0.8045	0.120*
N5	0.1892 (14)	0.1154 (11)	1.3561 (10)	0.037 (4)	0.50
C15	0.1322 (18)	0.0286 (12)	1.3241 (10)	0.042 (5)	0.50
H15	0.1631	0.0135	1.2482	0.051*	0.50
C16	0.029 (2)	−0.0355 (13)	1.4057 (13)	0.049 (5)	0.50
H16	−0.0092	−0.0935	1.3843	0.058*	0.50
C17	−0.0173 (19)	−0.0129 (14)	1.5192 (12)	0.035 (4)	0.50
C18	0.0398 (18)	0.0739 (14)	1.5512 (9)	0.039 (4)	0.50
H18	0.0088	0.0890	1.6271	0.047*	0.50
C19	0.1430 (16)	0.1380 (11)	1.4696 (11)	0.042 (5)	0.50
H19	0.1812	0.1960	1.4910	0.050*	0.50
C20	−0.136 (3)	−0.087 (2)	1.607 (3)	0.048 (5)	0.50
O9	−0.180 (3)	−0.162 (2)	1.5730 (17)	0.095 (7)	0.50
O10	−0.170 (2)	−0.0606 (18)	1.7064 (16)	0.070 (6)	0.50

	U11	U22	U33	U12	U13	U23
Er1	0.0229 (2)	0.0283 (2)	0.0268 (2)	−0.01183 (17)	0.00013 (17)	−0.00509 (17)
Ag1	0.0470 (5)	0.0600 (6)	0.0354 (5)	−0.0242 (4)	0.0112 (4)	−0.0090 (4)
Ag2	0.0507 (5)	0.0476 (5)	0.0445 (5)	−0.0299 (4)	0.0100 (4)	−0.0089 (4)
C1	0.023 (5)	0.032 (5)	0.026 (5)	−0.009 (4)	0.002 (4)	−0.005 (4)
C2	0.026 (5)	0.027 (5)	0.027 (5)	−0.008 (4)	0.001 (4)	−0.004 (4)
C3	0.031 (5)	0.021 (5)	0.033 (6)	−0.006 (4)	−0.005 (4)	−0.003 (4)
C4	0.029 (5)	0.036 (6)	0.032 (6)	−0.004 (4)	0.002 (4)	−0.007 (5)
C5	0.043 (6)	0.023 (5)	0.035 (6)	−0.019 (4)	0.007 (5)	−0.002 (4)
C6	0.046 (6)	0.021 (5)	0.038 (6)	−0.010 (4)	−0.006 (5)	−0.004 (4)
C7	0.053 (7)	0.046 (6)	0.040 (7)	−0.032 (5)	0.014 (5)	−0.010 (5)
C8	0.049 (6)	0.042 (6)	0.044 (7)	−0.027 (5)	0.015 (5)	−0.019 (5)
C9	0.016 (4)	0.026 (5)	0.043 (6)	−0.009 (4)	−0.014 (4)	0.012 (4)
C10	0.030 (5)	0.028 (5)	0.035 (6)	−0.013 (4)	−0.012 (4)	0.003 (4)
C11	0.043 (6)	0.031 (5)	0.056 (7)	−0.021 (5)	0.013 (5)	−0.027 (5)
C12	0.047 (6)	0.037 (6)	0.040 (6)	−0.022 (5)	0.005 (5)	−0.015 (5)
C13	0.055 (7)	0.035 (6)	0.042 (7)	−0.026 (5)	0.002 (6)	−0.007 (5)
C14	0.042 (6)	0.035 (6)	0.038 (6)	−0.017 (5)	0.006 (5)	−0.010 (5)
N1	0.036 (5)	0.043 (5)	0.031 (5)	−0.016 (4)	0.009 (4)	−0.004 (4)
N2	0.042 (5)	0.021 (4)	0.036 (5)	−0.016 (4)	−0.002 (4)	−0.001 (3)
O1	0.034 (4)	0.025 (3)	0.036 (4)	−0.018 (3)	0.008 (3)	−0.005 (3)
O2	0.037 (4)	0.036 (4)	0.034 (4)	−0.023 (3)	0.003 (3)	−0.013 (3)
O3	0.033 (4)	0.024 (3)	0.039 (4)	−0.002 (3)	−0.011 (3)	−0.012 (3)
O4	0.031 (4)	0.037 (4)	0.032 (4)	−0.001 (3)	−0.009 (3)	−0.016 (3)
O5	0.036 (4)	0.032 (4)	0.039 (4)	−0.017 (3)	0.001 (3)	−0.004 (3)
O6	0.039 (4)	0.058 (5)	0.036 (4)	−0.034 (4)	0.006 (3)	−0.006 (3)
O7	0.038 (4)	0.022 (3)	0.049 (5)	−0.014 (3)	−0.005 (3)	−0.004 (3)
O8	0.041 (4)	0.035 (4)	0.042 (5)	−0.020 (3)	−0.001 (4)	−0.004 (3)
O11	0.052 (5)	0.055 (5)	0.068 (6)	−0.011 (4)	−0.033 (4)	0.001 (4)
N3	0.12 (2)	0.081 (17)	0.087 (18)	−0.060 (16)	−0.025 (17)	−0.036 (14)
O12	0.099 (15)	0.086 (14)	0.102 (17)	−0.043 (13)	−0.028 (13)	−0.030 (12)
O13	0.099 (19)	0.12 (2)	0.14 (2)	−0.004 (17)	−0.052 (18)	0.058 (18)
O14	0.054 (10)	0.040 (9)	0.082 (13)	−0.013 (8)	−0.005 (10)	0.015 (9)
O15	0.121 (17)	0.054 (11)	0.080 (14)	−0.036 (12)	−0.042 (13)	−0.010 (10)
O16	0.068 (6)	0.064 (6)	0.117 (9)	−0.029 (5)	−0.044 (6)	0.010 (6)
N5	0.041 (10)	0.028 (9)	0.043 (8)	−0.021 (7)	0.005 (8)	−0.003 (7)
C15	0.053 (12)	0.037 (11)	0.041 (10)	−0.017 (9)	−0.015 (8)	0.000 (8)
C16	0.055 (12)	0.039 (11)	0.062 (9)	−0.029 (9)	−0.007 (9)	−0.014 (8)
C17	0.020 (8)	0.029 (9)	0.057 (8)	−0.009 (6)	−0.009 (7)	−0.003 (7)
C18	0.032 (10)	0.043 (10)	0.042 (9)	−0.019 (7)	0.003 (8)	−0.007 (7)
C19	0.049 (12)	0.029 (10)	0.049 (10)	−0.025 (8)	0.002 (10)	−0.007 (8)
C20	0.026 (10)	0.029 (10)	0.075 (10)	−0.006 (7)	−0.011 (9)	0.018 (8)
O9	0.090 (13)	0.125 (15)	0.088 (14)	−0.089 (12)	0.001 (13)	0.001 (11)
O10	0.053 (11)	0.068 (13)	0.072 (10)	−0.016 (10)	0.005 (10)	0.011 (9)

Er1—O7	2.254 (7)	C10—C11	1.392 (14)
Er1—O11	2.339 (8)	C10—C14	1.415 (15)
Er1—O2i	2.364 (7)	C11—C12	1.365 (14)
Er1—O4ii	2.369 (7)	C11—H11	0.9300
Er1—O3	2.371 (6)	C12—N2	1.357 (13)
Er1—O1	2.382 (6)	C12—H12	0.9300
Er1—O5iii	2.400 (6)	C13—N2	1.332 (13)
Er1—O6iii	2.423 (7)	C13—C14	1.350 (14)
Ag1—N1	2.231 (8)	C13—H13	0.9300
Ag1—O8	2.263 (7)	C14—H14	0.9300
Ag1—O1	2.417 (7)	O2—Er1i	2.364 (7)
Ag2—N5	2.122 (9)	O4—Er1ii	2.369 (7)
Ag2—N2	2.199 (8)	O5—Er1v	2.400 (6)
Ag2—O9iv	2.521 (9)	O6—Er1v	2.423 (7)
Ag2—O10iv	2.492 (9)	O11—N3	1.28 (3)
C1—O1	1.251 (11)	O11—H11A	0.8385
C1—O2	1.283 (11)	O11—H11B	0.8880
C1—C1i	1.536 (19)	N3—O13	1.28 (4)
C2—O3	1.260 (12)	N3—O12	1.32 (3)
C2—O4	1.270 (11)	O14—H14A	0.8385
C2—C2ii	1.545 (19)	O14—H14B	0.8436
C3—O6	1.248 (12)	O15—H15A	0.8402
C3—O5	1.280 (12)	O15—H15B	0.8410
C3—C4	1.519 (13)	O16—H16A	0.8365
C3—Er1v	2.762 (10)	O16—H16B	0.8405
C4—C5	1.365 (15)	N5—C15	1.3900
C4—C8	1.394 (14)	N5—C19	1.3900
C5—C6	1.407 (14)	C15—C16	1.3900
C5—H5	0.9300	C15—H15	0.9300
C6—N1	1.374 (13)	C16—C17	1.3900
C6—H6	0.9300	C16—H16	0.9300
C7—N1	1.299 (14)	C17—C18	1.3900
C7—C8	1.396 (15)	C17—C20	1.57 (3)
C7—H7	0.9300	C18—C19	1.3900
C8—H8	0.9300	C18—H18	0.9300
C9—O7	1.243 (12)	C19—H19	0.9300
C9—O8	1.246 (12)	C20—O9	1.22 (3)
C9—C10	1.509 (13)	C20—O10	1.24 (3)
O7—Er1—O11	78.4 (3)	C14—C10—C9	123.0 (9)
O7—Er1—O2i	140.7 (2)	C12—C11—C10	122.1 (10)
O11—Er1—O2i	74.3 (3)	C12—C11—H11	118.9
O7—Er1—O4ii	73.3 (2)	C10—C11—H11	118.9
O11—Er1—O4ii	146.0 (3)	N2—C12—C11	121.0 (10)
O2i—Er1—O4ii	118.2 (2)	N2—C12—H12	119.5
O7—Er1—O3	139.7 (2)	C11—C12—H12	119.5
O11—Er1—O3	141.7 (3)	N2—C13—C14	124.5 (10)
O2i—Er1—O3	73.1 (2)	N2—C13—H13	117.7
O4ii—Er1—O3	69.5 (2)	C14—C13—H13	117.7
O7—Er1—O1	78.8 (2)	C13—C14—C10	119.4 (10)
O11—Er1—O1	79.9 (3)	C13—C14—H14	120.3
O2i—Er1—O1	69.1 (2)	C10—C14—H14	120.3
O4ii—Er1—O1	76.4 (2)	C7—N1—C6	117.5 (9)
O3—Er1—O1	106.1 (2)	C7—N1—Ag1	123.2 (7)
O7—Er1—O5iii	83.7 (2)	C6—N1—Ag1	119.2 (7)
O11—Er1—O5iii	110.4 (3)	C13—N2—C12	117.6 (9)
O2i—Er1—O5iii	132.3 (2)	C13—N2—Ag2	122.1 (7)
O4ii—Er1—O5iii	85.0 (2)	C12—N2—Ag2	120.4 (7)
O3—Er1—O5iii	78.5 (2)	C1—O1—Er1	118.2 (6)
O1—Er1—O5iii	157.4 (2)	C1—O1—Ag1	121.9 (6)
O7—Er1—O6iii	122.2 (2)	Er1—O1—Ag1	119.9 (3)
O11—Er1—O6iii	81.4 (3)	C1—O2—Er1i	118.2 (6)
O2i—Er1—O6iii	81.1 (2)	C2—O3—Er1	117.8 (6)
O4ii—Er1—O6iii	130.0 (2)	C2—O4—Er1ii	118.2 (6)
O3—Er1—O6iii	74.3 (2)	C3—O5—Er1v	92.1 (6)
O1—Er1—O6iii	148.1 (2)	C3—O6—Er1v	91.9 (6)
O5iii—Er1—O6iii	54.4 (2)	C9—O7—Er1	150.9 (6)
N1—Ag1—O8	132.0 (3)	C9—O8—Ag1	118.1 (6)
N1—Ag1—O1	124.5 (3)	N3—O11—Er1	120.6 (14)
O8—Ag1—O1	103.6 (2)	N3—O11—H11A	91.9
N5—Ag2—N2	156.4 (4)	Er1—O11—H11A	130.9
O1—C1—O2	125.7 (9)	Er1—O11—H11B	115.6
O1—C1—C1i	117.7 (10)	H11A—O11—H11B	103.8
O2—C1—C1i	116.6 (10)	O13—N3—O11	121 (3)
O3—C2—O4	125.6 (9)	O13—N3—O12	123 (3)
O3—C2—C2ii	117.8 (10)	O11—N3—O12	115 (3)
O4—C2—C2ii	116.5 (11)	O13—N3—H11B	120.8
O6—C3—O5	121.5 (9)	O12—N3—H11B	110.8
O6—C3—C4	120.3 (9)	N3—O13—H15B	100.2
O5—C3—C4	118.2 (9)	H14A—O14—H14B	106.6
O6—C3—Er1v	61.3 (5)	H15A—O15—H15B	106.7
O5—C3—Er1v	60.3 (5)	H16A—O16—H16B	107.4
C4—C3—Er1v	177.8 (7)	C15—N5—C19	120.0
C5—C4—C8	118.8 (9)	C15—N5—Ag2	118.0 (7)
C5—C4—C3	119.4 (9)	C19—N5—Ag2	122.0 (7)
C8—C4—C3	121.8 (10)	N5—C15—C16	120.0
C4—C5—C6	119.2 (10)	N5—C15—H15	120.0
C4—C5—H5	120.4	C16—C15—H15	120.0
C6—C5—H5	120.4	C15—C16—C17	120.0
N1—C6—C5	121.6 (10)	C15—C16—H16	120.0
N1—C6—H6	119.2	C17—C16—H16	120.0
C5—C6—H6	119.2	C18—C17—C16	120.0
N1—C7—C8	124.5 (10)	C18—C17—C20	122.1 (15)
N1—C7—H7	117.8	C16—C17—C20	117.9 (15)
C8—C7—H7	117.8	C17—C18—C19	120.0
C4—C8—C7	118.2 (10)	C17—C18—H18	120.0
C4—C8—H8	120.9	C19—C18—H18	120.0
C7—C8—H8	120.9	C18—C19—N5	120.0
O7—C9—O8	126.5 (9)	C18—C19—H19	120.0
O7—C9—C10	117.7 (9)	N5—C19—H19	120.0
O8—C9—C10	115.7 (9)	O9—C20—O10	128 (2)
C11—C10—C14	115.3 (9)	O9—C20—C17	118 (2)
C11—C10—C9	121.7 (9)	O10—C20—C17	113 (2)

D—H···A	D—H	H···A	D···A	D—H···A
O14—H14A···O9vi	0.84	2.39	2.81 (3)	111
O14—H14B···O12vii	0.84	1.99	2.62 (3)	131
O16—H16A···O11viii	0.84	1.95	2.773 (12)	170
O16—H16B···O5ix	0.84	2.06	2.862 (12)	158
C6—H6···O2	0.93	2.53	3.371 (12)	151
C11—H11···O5iii	0.93	2.42	3.315 (8)	162
C12—H12···O14x	0.93	2.56	3.441 (2)	158

Table 1

Selected bond lengths (Å)

Er1—O7	2.254 (7)
Er1—O11	2.339 (8)
Er1—O2i	2.364 (7)
Er1—O4ii	2.369 (7)
Er1—O3	2.371 (6)
Er1—O1	2.382 (6)
Er1—O5iii	2.400 (6)
Er1—O6iii	2.423 (7)
Ag1—N1	2.231 (8)
Ag1—O8	2.263 (7)
Ag1—O1	2.417 (7)
Ag2—N5	2.122 (9)
Ag2—N2	2.199 (8)
Ag2—O9iv	2.521 (9)
Ag2—O10iv	2.492 (9)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .

Table 2

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O14—H14A⋯O9v	0.84	2.39	2.81 (3)	111
O14—H14B⋯O12vi	0.84	1.99	2.62 (3)	131
O16—H16A⋯O11vii	0.84	1.95	2.773 (12)	170
O16—H16B⋯O5viii	0.84	2.06	2.862 (12)	158
C6—H6⋯O2	0.93	2.53	3.371 (12)	151
C11—H11⋯O5iii	0.93	2.42	3.315 (8)	162
C12—H12⋯O14ix	0.93	2.56	3.441 (2)	158

Symmetry codes: (iii) ; (v) ; (vi) ; (vii) ; (viii) ; (ix) .