Poly[[diaqua-bis-(μ(3)-isonicotinato-κN:O:O')bis-(μ(2)-isonicotinato-κN:O)gadolinium(III)disiliver(I)] nitrate monohydrate].

In the title compound, {[Ag(2)Gd(C(6)H(4)NO(2))(4)(H(2)O)(2)]NO(3)·H(2)O}(n), the Gd(III) ion is coordinated by eight O atoms from six isonicotinate ligands and two water mol-ecules in a distorted square anti-prismatic geometry. Two Ag(I) ions are each bonded to two N atoms from two isonicotinate ligands in a linear or bow-like fashion [N-Ag-N angles = 178.6 (2) and 147.1 (2)°]. These metal ions are connected by the isonicotin-ate ligands into a layer parallel to (010). O-H⋯O hydrogen bonds donated by the coordinated and uncoordinated water mol-ecules and intra-layer π-π stacking inter-actions between the pyridine rings [centroid-centroid distances = 3.551 (4) and 3.555 (4) Å] are observed. The layers inter-act with each other by inter-layer Ag⋯O(aqua) contacts [2.731 (4) Å] and π-π stacking inter-actions between the pyridine rings [centroid-centroid distances = 3.466 (3) and 3.516 (3) Å], resulting in the formation of a three-dimensional supra-molecular structure.

Related literature

For general background to the structures and properties of lanthanide–transition metal coordination polymers, see: Cheng et al. (2007 ▶, 2008 ▶); Fan & Wu (2010 ▶); Fang et al. (2009 ▶); Luo et al. (2007 ▶).

Experimental

Crystal data

[Ag2Gd(C6H4NO2)4(H2O)2]NO3·H2O

M = 977.46

Monoclinic,

a = 16.889 (8) Å

b = 24.744 (11) Å

c = 6.750 (3) Å

β = 96.240 (9)°

V = 2804 (2) Å3

Z = 4

Mo Kα radiation

μ = 3.80 mm−1

T = 293 K

0.30 × 0.12 × 0.08 mm

Data collection

Rigaku Mercury CCD diffractometer

Absorption correction: multi-scan (CrystalClear; Rigaku, 2007 ▶) T min = 0.703, T max = 1.000

16445 measured reflections

4859 independent reflections

4370 reflections with I > 2σ(I)

R int = 0.032

Refinement

R[F 2 > 2σ(F 2)] = 0.034

wR(F 2) = 0.129

S = 1.08

4859 reflections

416 parameters

H-atom parameters constrained

Δρmax = 1.38 e Å−3

Δρmin = −1.27 e Å−3

Data collection: CrystalClear (Rigaku, 2007 ▶); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶) and DIAMOND (Brandenburg, 1999 ▶); software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009 ▶).

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810035634/hy2346sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536810035634/hy2346Isup2.hkl

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

[Ag2Gd(C6H4NO2)4(H2O)2]NO3·H2O	F(000) = 1884
Mr = 977.46	Dx = 2.315 Mg m−3
Monoclinic, P21/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 6663 reflections
a = 16.889 (8) Å	θ = 3.0–27.5°
b = 24.744 (11) Å	µ = 3.80 mm−1
c = 6.750 (3) Å	T = 293 K
β = 96.240 (9)°	Block, colorless
V = 2804 (2) Å3	0.30 × 0.12 × 0.08 mm
Z = 4

Rigaku Mercury CCD diffractometer	4859 independent reflections
Radiation source: fine-focus sealed tube	4370 reflections with I > 2σ(I)
graphite	Rint = 0.032
ω scans	θmax = 25.0°, θmin = 2.6°
Absorption correction: multi-scan (CrystalClear; Rigaku, 2007)	h = −20→19
Tmin = 0.703, Tmax = 1.000	k = −28→29
16445 measured reflections	l = −8→8

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)] = 0.034	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.129	H-atom parameters constrained
S = 1.08	w = 1/[σ2(Fo2) + (0.0925P)2 + 0.0116P] where P = (Fo2 + 2Fc2)/3
4859 reflections	(Δ/σ)max = 0.002
416 parameters	Δρmax = 1.38 e Å−3
0 restraints	Δρmin = −1.27 e Å−3

	x	y	z	Uiso*/Ueq
Gd1	0.769985 (15)	0.162835 (10)	0.61682 (4)	0.01965 (14)
Ag1	1.27129 (3)	0.27098 (2)	0.49007 (9)	0.04268 (18)
Ag2	0.26502 (3)	0.00962 (2)	0.40147 (9)	0.04637 (19)
O1	0.8613 (2)	0.23037 (17)	0.5464 (8)	0.0399 (11)
O2	0.8530 (2)	0.31392 (15)	0.4284 (6)	0.0255 (8)
O3	0.8850 (2)	0.10782 (16)	0.6024 (6)	0.0309 (9)
O4	0.9135 (3)	0.05792 (18)	0.8754 (6)	0.0342 (10)
O5	0.6664 (3)	0.1044 (2)	0.4728 (6)	0.0412 (12)
O6	0.6514 (3)	0.08461 (19)	0.1515 (7)	0.0380 (11)
O7	0.6853 (2)	0.22994 (18)	0.4473 (7)	0.0394 (11)
O8	0.6733 (2)	0.31472 (17)	0.3362 (6)	0.0305 (9)
O9	0.7837 (3)	0.1483 (2)	0.2626 (6)	0.0419 (12)
H9A	0.7661	0.1161	0.2502	0.050*
H9B	0.8157	0.1639	0.1924	0.050*
O10	0.7581 (2)	0.08017 (15)	0.8329 (6)	0.0293 (9)
H10C	0.8059	0.0717	0.8722	0.035*
H10A	0.7353	0.0817	0.9390	0.035*
O11	0.2993 (4)	0.0486 (3)	0.8246 (9)	0.076 (2)
O12	0.2422 (4)	0.0839 (3)	1.0578 (9)	0.084 (2)
O13	0.2575 (5)	0.1295 (3)	0.7976 (11)	0.083 (2)
O14	1.2728 (4)	0.3429 (2)	0.9058 (12)	0.0660 (18)
H14C	1.2816	0.3432	1.0322	0.08 (4)*
H14B	1.2406	0.3619	0.8292	0.095*
N1	1.1448 (3)	0.2720 (2)	0.4982 (7)	0.0295 (11)
N2	1.1488 (3)	0.0291 (2)	0.4987 (8)	0.0319 (12)
N3	0.3875 (3)	0.0365 (2)	0.3745 (8)	0.0317 (11)
N4	0.3979 (3)	0.2720 (2)	0.4807 (8)	0.0326 (12)
N5	0.2680 (4)	0.0875 (3)	0.8983 (11)	0.0524 (17)
C1	1.1038 (3)	0.3187 (3)	0.4945 (9)	0.0300 (13)
H1A	1.1321	0.3510	0.4970	0.036*
C2	1.0215 (3)	0.3210 (2)	0.4872 (9)	0.0254 (12)
H2A	0.9952	0.3541	0.4804	0.030*
C3	0.9793 (3)	0.2732 (2)	0.4900 (8)	0.0192 (11)
C4	1.0219 (3)	0.2248 (2)	0.4990 (9)	0.0244 (12)
H4A	0.9951	0.1920	0.5020	0.029*
C5	1.1036 (4)	0.2255 (3)	0.5035 (9)	0.0306 (13)
H5A	1.1312	0.1929	0.5103	0.037*
C6	0.8906 (3)	0.2727 (2)	0.4838 (7)	0.0202 (11)
C7	1.0969 (4)	0.0607 (2)	0.3909 (10)	0.0319 (13)
H7A	1.1093	0.0724	0.2670	0.038*
C8	1.0253 (4)	0.0770 (2)	0.4541 (9)	0.0286 (13)
H8A	0.9897	0.0980	0.3723	0.034*
C9	1.0080 (3)	0.0614 (2)	0.6418 (8)	0.0209 (11)
C10	1.0615 (3)	0.0291 (2)	0.7561 (9)	0.0299 (13)
H10B	1.0514	0.0180	0.8826	0.036*
C11	1.1301 (4)	0.0136 (2)	0.6792 (10)	0.0325 (14)
H11A	1.1654	−0.0089	0.7558	0.039*
C12	0.9283 (3)	0.0766 (2)	0.7152 (8)	0.0229 (12)
C13	0.4339 (4)	0.0597 (3)	0.5286 (9)	0.0327 (14)
H13A	0.4127	0.0643	0.6490	0.039*
C14	0.5102 (4)	0.0765 (2)	0.5146 (10)	0.0326 (14)
H14A	0.5406	0.0910	0.6250	0.039*
C15	0.5418 (3)	0.0717 (2)	0.3342 (8)	0.0219 (11)
C16	0.4947 (4)	0.0496 (2)	0.1764 (8)	0.0294 (13)
H16A	0.5139	0.0462	0.0530	0.035*
C17	0.4192 (4)	0.0327 (3)	0.2018 (10)	0.0328 (14)
H17A	0.3883	0.0178	0.0930	0.039*
C18	0.6282 (3)	0.0883 (2)	0.3187 (8)	0.0231 (12)
C19	0.4396 (3)	0.2255 (2)	0.4717 (9)	0.0288 (13)
H19A	0.4125	0.1928	0.4741	0.035*
C20	0.5204 (3)	0.2245 (2)	0.4593 (8)	0.0234 (12)
H20A	0.5476	0.1918	0.4597	0.028*
C21	0.4397 (4)	0.3187 (3)	0.4771 (9)	0.0323 (14)
H21A	0.4130	0.3511	0.4912	0.039*
C22	0.5186 (3)	0.3206 (2)	0.4539 (9)	0.0260 (12)
H22A	0.5441	0.3536	0.4434	0.031*
C23	0.5604 (3)	0.2726 (2)	0.4462 (7)	0.0202 (11)
C24	0.6471 (3)	0.2728 (2)	0.4095 (8)	0.0232 (12)

	U11	U22	U33	U12	U13	U23
Gd1	0.0133 (2)	0.0206 (2)	0.0256 (2)	−0.00073 (9)	0.00462 (13)	0.00042 (9)
Ag1	0.0119 (3)	0.0577 (4)	0.0593 (4)	−0.0001 (2)	0.0077 (2)	0.0006 (3)
Ag2	0.0197 (3)	0.0572 (4)	0.0642 (4)	0.0012 (2)	0.0137 (2)	0.0041 (3)
O1	0.016 (2)	0.032 (2)	0.071 (3)	−0.0077 (18)	0.004 (2)	0.019 (2)
O2	0.0152 (19)	0.028 (2)	0.033 (2)	0.0050 (17)	−0.0015 (16)	0.0059 (17)
O3	0.027 (2)	0.030 (2)	0.037 (2)	0.0107 (18)	0.0090 (19)	0.0024 (18)
O4	0.033 (2)	0.042 (3)	0.029 (2)	0.016 (2)	0.0073 (19)	0.0101 (19)
O5	0.036 (3)	0.056 (3)	0.030 (2)	−0.026 (2)	−0.002 (2)	−0.001 (2)
O6	0.029 (2)	0.054 (3)	0.033 (2)	−0.010 (2)	0.0116 (19)	−0.005 (2)
O7	0.016 (2)	0.041 (3)	0.061 (3)	0.0114 (19)	0.004 (2)	0.015 (2)
O8	0.019 (2)	0.035 (2)	0.039 (2)	−0.0045 (18)	0.0097 (18)	0.0090 (19)
O9	0.041 (3)	0.063 (3)	0.023 (2)	−0.022 (2)	0.0083 (19)	−0.002 (2)
O10	0.026 (2)	0.025 (2)	0.038 (2)	0.0025 (18)	0.0141 (18)	0.0036 (17)
O11	0.051 (4)	0.112 (6)	0.063 (4)	0.029 (4)	0.002 (3)	−0.033 (4)
O12	0.065 (4)	0.143 (7)	0.042 (3)	0.047 (4)	−0.002 (3)	−0.002 (3)
O13	0.102 (6)	0.068 (5)	0.081 (4)	−0.019 (4)	0.020 (4)	−0.007 (4)
O14	0.062 (4)	0.038 (3)	0.098 (6)	−0.002 (3)	0.007 (4)	−0.001 (3)
N1	0.015 (2)	0.042 (3)	0.032 (3)	−0.001 (2)	0.005 (2)	0.000 (2)
N2	0.018 (3)	0.034 (3)	0.045 (3)	−0.002 (2)	0.009 (2)	−0.006 (2)
N3	0.016 (2)	0.032 (3)	0.047 (3)	0.002 (2)	0.003 (2)	0.002 (2)
N4	0.018 (3)	0.036 (3)	0.045 (3)	0.001 (2)	0.012 (2)	−0.003 (2)
N5	0.030 (3)	0.063 (4)	0.064 (5)	0.002 (3)	0.006 (3)	−0.018 (4)
C1	0.016 (3)	0.030 (3)	0.044 (3)	−0.008 (3)	0.006 (3)	0.000 (3)
C2	0.015 (3)	0.023 (3)	0.039 (3)	−0.001 (2)	0.008 (2)	0.005 (2)
C3	0.014 (3)	0.022 (3)	0.022 (3)	−0.001 (2)	0.002 (2)	0.002 (2)
C4	0.016 (3)	0.023 (3)	0.034 (3)	0.000 (2)	0.003 (2)	0.001 (2)
C5	0.024 (3)	0.031 (3)	0.037 (3)	0.007 (3)	0.005 (3)	0.003 (3)
C6	0.016 (3)	0.027 (3)	0.018 (2)	−0.004 (2)	0.003 (2)	−0.004 (2)
C7	0.028 (3)	0.031 (3)	0.039 (3)	0.002 (3)	0.012 (3)	0.002 (3)
C8	0.023 (3)	0.024 (3)	0.040 (3)	0.004 (2)	0.006 (3)	−0.005 (2)
C9	0.020 (3)	0.021 (3)	0.022 (3)	0.001 (2)	−0.001 (2)	−0.001 (2)
C10	0.019 (3)	0.034 (3)	0.037 (3)	−0.003 (3)	0.007 (3)	0.003 (3)
C11	0.021 (3)	0.032 (3)	0.044 (4)	0.010 (3)	0.001 (3)	0.003 (3)
C12	0.022 (3)	0.022 (3)	0.025 (3)	0.004 (2)	0.006 (2)	−0.003 (2)
C13	0.034 (3)	0.034 (3)	0.032 (3)	−0.001 (3)	0.009 (3)	−0.006 (3)
C14	0.031 (3)	0.030 (3)	0.038 (3)	−0.008 (3)	0.009 (3)	−0.008 (3)
C15	0.020 (3)	0.013 (2)	0.033 (3)	−0.001 (2)	0.004 (2)	0.002 (2)
C16	0.031 (3)	0.033 (3)	0.023 (3)	−0.003 (3)	0.001 (2)	0.000 (2)
C17	0.022 (3)	0.036 (3)	0.039 (3)	−0.007 (3)	0.000 (3)	0.003 (3)
C18	0.024 (3)	0.021 (3)	0.024 (3)	−0.006 (2)	0.000 (2)	−0.002 (2)
C19	0.018 (3)	0.030 (3)	0.038 (3)	−0.004 (2)	0.002 (3)	0.003 (2)
C20	0.021 (3)	0.028 (3)	0.022 (3)	0.002 (2)	0.004 (2)	0.001 (2)
C21	0.023 (3)	0.028 (3)	0.048 (4)	0.004 (3)	0.015 (3)	−0.002 (3)
C22	0.021 (3)	0.024 (3)	0.032 (3)	−0.004 (2)	0.003 (2)	0.001 (2)
C23	0.017 (3)	0.029 (3)	0.015 (2)	−0.003 (2)	0.005 (2)	0.002 (2)
C24	0.018 (3)	0.028 (3)	0.025 (3)	−0.001 (2)	0.007 (2)	0.003 (2)

Gd1—O1	2.357 (4)	N4—C19	1.354 (8)
Gd1—O2i	2.465 (4)	N4—Ag1iii	2.147 (5)
Gd1—O3	2.383 (4)	C1—C2	1.388 (8)
Gd1—O5	2.393 (4)	C1—H1A	0.9300
Gd1—O7	2.399 (4)	C2—C3	1.383 (8)
Gd1—O8i	2.386 (4)	C2—H2A	0.9300
Gd1—O9	2.454 (4)	C3—C4	1.395 (7)
Gd1—O10	2.533 (4)	C3—C6	1.494 (7)
Ag1—N1	2.144 (5)	C4—C5	1.377 (8)
Ag1—N4ii	2.147 (5)	C4—H4A	0.9300
Ag2—N2iii	2.189 (5)	C5—H5A	0.9300
Ag2—N3	2.199 (5)	C7—C8	1.385 (9)
O1—C6	1.252 (7)	C7—H7A	0.9300
O2—C6	1.238 (7)	C8—C9	1.386 (8)
O2—Gd1iv	2.465 (4)	C8—H8A	0.9300
O3—C12	1.261 (7)	C9—C10	1.378 (8)
O4—C12	1.227 (7)	C9—C12	1.530 (8)
O5—C18	1.229 (7)	C10—C11	1.374 (8)
O6—C18	1.238 (7)	C10—H10B	0.9300
O7—C24	1.253 (7)	C11—H11A	0.9300
O8—C24	1.251 (7)	C13—C14	1.367 (9)
O8—Gd1iv	2.386 (4)	C13—H13A	0.9300
O9—H9A	0.8500	C14—C15	1.387 (8)
O9—H9B	0.8500	C14—H14A	0.9300
O10—H10C	0.8500	C15—C16	1.371 (8)
O10—H10A	0.8500	C15—C18	1.531 (8)
O11—N5	1.229 (9)	C16—C17	1.370 (9)
O12—N5	1.208 (9)	C16—H16A	0.9300
O13—N5	1.244 (10)	C17—H17A	0.9300
O14—H14C	0.8500	C19—C20	1.377 (8)
O14—H14B	0.8500	C19—H19A	0.9300
N1—C1	1.345 (8)	C20—C23	1.377 (8)
N1—C5	1.348 (8)	C20—H20A	0.9300
N2—C7	1.331 (8)	C21—C22	1.359 (9)
N2—C11	1.348 (8)	C21—H21A	0.9300
N2—Ag2ii	2.189 (5)	C22—C23	1.384 (8)
N3—C17	1.338 (8)	C22—H22A	0.9300
N3—C13	1.359 (8)	C23—C24	1.512 (7)
N4—C21	1.354 (8)
O1—Gd1—O3	80.95 (15)	C2—C3—C6	121.5 (5)
O1—Gd1—O8i	117.84 (16)	C4—C3—C6	120.4 (5)
O3—Gd1—O8i	140.74 (14)	C5—C4—C3	120.1 (5)
O1—Gd1—O5	144.27 (17)	C5—C4—H4A	120.0
O3—Gd1—O5	101.65 (17)	C3—C4—H4A	120.0
O8i—Gd1—O5	82.71 (15)	N1—C5—C4	121.9 (6)
O1—Gd1—O7	77.42 (16)	N1—C5—H5A	119.1
O3—Gd1—O7	145.32 (15)	C4—C5—H5A	119.1
O8i—Gd1—O7	73.87 (15)	O2—C6—O1	125.6 (5)
O5—Gd1—O7	81.52 (18)	O2—C6—C3	118.8 (5)
O1—Gd1—O9	76.97 (17)	O1—C6—C3	115.4 (5)
O3—Gd1—O9	73.28 (16)	N2—C7—C8	123.3 (6)
O8i—Gd1—O9	141.49 (16)	N2—C7—H7A	118.4
O5—Gd1—O9	69.98 (15)	C8—C7—H7A	118.4
O7—Gd1—O9	75.62 (18)	C9—C8—C7	118.6 (6)
O1—Gd1—O2i	71.51 (16)	C9—C8—H8A	120.7
O3—Gd1—O2i	77.15 (14)	C7—C8—H8A	120.7
O8i—Gd1—O2i	77.31 (14)	C8—C9—C10	118.9 (5)
O5—Gd1—O2i	144.13 (14)	C8—C9—C12	120.6 (5)
O7—Gd1—O2i	119.97 (15)	C10—C9—C12	120.5 (5)
O9—Gd1—O2i	139.49 (14)	C11—C10—C9	118.6 (6)
O1—Gd1—O10	141.58 (15)	C11—C10—H10B	120.7
O3—Gd1—O10	71.24 (14)	C9—C10—H10B	120.7
O8i—Gd1—O10	74.21 (14)	N2—C11—C10	123.5 (6)
O5—Gd1—O10	69.25 (15)	N2—C11—H11A	118.2
O7—Gd1—O10	138.84 (14)	C10—C11—H11A	118.2
O9—Gd1—O10	117.66 (16)	O4—C12—O3	127.1 (5)
O2i—Gd1—O10	76.74 (14)	O4—C12—C9	117.6 (5)
N4ii—Ag1—N1	178.6 (2)	O3—C12—C9	115.3 (5)
N2iii—Ag2—N3	147.1 (2)	N3—C13—C14	123.0 (6)
C6—O1—Gd1	162.4 (4)	N3—C13—H13A	118.5
C6—O2—Gd1iv	132.5 (3)	C14—C13—H13A	118.5
C12—O3—Gd1	138.3 (4)	C13—C14—C15	119.3 (6)
C18—O5—Gd1	146.4 (4)	C13—C14—H14A	120.3
C24—O7—Gd1	161.8 (4)	C15—C14—H14A	120.3
C24—O8—Gd1iv	137.2 (4)	C16—C15—C14	118.0 (5)
Gd1—O9—H9A	99.5	C16—C15—C18	122.1 (5)
Gd1—O9—H9B	127.5	C14—C15—C18	119.8 (5)
H9A—O9—H9B	127.5	C17—C16—C15	119.6 (5)
Gd1—O10—H10C	104.3	C17—C16—H16A	120.2
Gd1—O10—H10A	121.4	C15—C16—H16A	120.2
H10C—O10—H10A	104.5	N3—C17—C16	123.6 (6)
H14C—O14—H14B	129.5	N3—C17—H17A	118.2
C1—N1—C5	118.0 (5)	C16—C17—H17A	118.2
C1—N1—Ag1	121.4 (4)	O5—C18—O6	127.3 (6)
C5—N1—Ag1	120.6 (4)	O5—C18—C15	116.5 (5)
C7—N2—C11	117.1 (5)	O6—C18—C15	116.2 (5)
C7—N2—Ag2ii	121.6 (4)	N4—C19—C20	122.8 (5)
C11—N2—Ag2ii	121.0 (4)	N4—C19—H19A	118.6
C17—N3—C13	116.4 (5)	C20—C19—H19A	118.6
C17—N3—Ag2	121.3 (4)	C23—C20—C19	118.9 (5)
C13—N3—Ag2	122.2 (4)	C23—C20—H20A	120.5
C21—N4—C19	116.7 (5)	C19—C20—H20A	120.5
C21—N4—Ag1iii	122.2 (4)	N4—C21—C22	123.4 (6)
C19—N4—Ag1iii	121.0 (4)	N4—C21—H21A	118.3
O12—N5—O11	121.1 (9)	C22—C21—H21A	118.3
O12—N5—O13	120.3 (7)	C21—C22—C23	119.0 (5)
O11—N5—O13	118.4 (8)	C21—C22—H22A	120.5
N1—C1—C2	123.3 (6)	C23—C22—H22A	120.5
N1—C1—H1A	118.4	C20—C23—C22	118.9 (5)
C2—C1—H1A	118.4	C20—C23—C24	120.2 (5)
C3—C2—C1	118.6 (5)	C22—C23—C24	120.8 (5)
C3—C2—H2A	120.7	O7—C24—O8	125.9 (5)
C1—C2—H2A	120.7	O7—C24—C23	116.8 (5)
C2—C3—C4	118.1 (5)	O8—C24—C23	117.2 (5)

D—H···A	D—H	H···A	D···A	D—H···A
O9—H9A···O6	0.85	2.13	2.771 (7)	132
O9—H9B···O2iv	0.85	2.03	2.811 (6)	153
O10—H10A···O6v	0.85	2.12	2.954 (6)	165
O10—H10C···O4	0.85	1.84	2.662 (6)	162
O14—H14B···O12vi	0.85	2.27	2.960 (9)	139
O14—H14C···O13vii	0.85	2.01	2.779 (10)	151

Table 1

Selected bond lengths (Å)

Gd1—O1	2.357 (4)
Gd1—O2i	2.465 (4)
Gd1—O3	2.383 (4)
Gd1—O5	2.393 (4)
Gd1—O7	2.399 (4)
Gd1—O8i	2.386 (4)
Gd1—O9	2.454 (4)
Gd1—O10	2.533 (4)
Ag1—N1	2.144 (5)
Ag1—N4ii	2.147 (5)
Ag2—N2iii	2.189 (5)
Ag2—N3	2.199 (5)

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

Table 2

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O9—H9A⋯O6	0.85	2.13	2.771 (7)	132
O9—H9B⋯O2iv	0.85	2.03	2.811 (6)	153
O10—H10A⋯O6v	0.85	2.12	2.954 (6)	165
O10—H10C⋯O4	0.85	1.84	2.662 (6)	162
O14—H14B⋯O12vi	0.85	2.27	2.960 (9)	139
O14—H14C⋯O13vii	0.85	2.01	2.779 (10)	151

Symmetry codes: (iv) ; (v) ; (vi) ; (vii) .