catena-Poly[[[tetra-aqua-praseo-dym-ium(III)]-di-μ-nicotinato-κO:N;κO:N-disilver(I)-di-μ-nicotinato-κN:O;κN:O] perchlorate monohydrate].

In the title compound, {[Ag(2)Pr(C(6)H(4)NO(2))(4)(H(2)O)(4)]ClO(4)·H(2)O}(n), the Pr(III) atom, lying on a twofold rotation axis, has a distorted square-anti-prismatic coordination geometry, defined by four O atoms from four nicotinate (nic) ligands and four water mol-ecules. The Ag(I) atom is coordinated in an almost linear fashion by two pyridyl N atoms from two nicotinate ligands. The linear coordination is augmented by weak inter-actions with three O atoms from one perchlorate anion, one uncoordinated water mol-ecule and one carboxyl-ate group. Two Pr atoms link two {Ag(nic)(2)}(+) units into a ring, which is further extended into an infinite zigzag chain by sharing the Pr atoms. These chains are further connected into a three-dimensional network via weak Ag⋯O inter-actions, O-H⋯O hydrogen bonds, Ag⋯Ag inter-actions [3.357 (2) Å] and π-π inter-actions between the pyridyl rings [centroid-centroid distance = 3.685 (4) Å].

Related literature

For general background, see: Cheng et al. (2007a ▶,b ▶); Luo et al. (2006 ▶, 2007 ▶).

Experimental

Crystal data

[Ag2Pr(C6H4NO2)4(H2O)4]ClO4·H2O

M = 1034.59

Orthorhombic,

a = 35.396 (3) Å

b = 12.3733 (10) Å

c = 15.2324 (13) Å

V = 6671.2 (10) Å3

Z = 8

Mo Kα radiation

μ = 2.76 mm−1

T = 273 (2) K

0.30 × 0.25 × 0.22 mm

Data collection

Bruker APEXII CCD diffractometer

Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.453, T max = 0.552

16336 measured reflections

3065 independent reflections

2478 reflections with I > 2σ(I)

R int = 0.049

Refinement

R[F 2 > 2σ(F 2)] = 0.036

wR(F 2) = 0.097

S = 1.06

3065 reflections

227 parameters

27 restraints

H-atom parameters constrained

Δρmax = 1.56 e Å−3

Δρmin = −0.87 e Å−3

Data collection: APEX2 (Bruker, 2007 ▶); cell refinement: SAINT (Bruker, 2007 ▶); data reduction: SAINT; n class="Chemical">program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL.

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536809001718/hy2177sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536809001718/hy2177Isup2.hkl

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

[Ag2Pr(C6H4NO2)4(H2O)4]ClO4·H2O	F(000) = 4032
Mr = 1034.59	Dx = 2.060 Mg m−3
Orthorhombic, Cmca	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2bc 2	Cell parameters from 3121 reflections
a = 35.396 (3) Å	θ = 1.4–28°
b = 12.3733 (10) Å	µ = 2.76 mm−1
c = 15.2324 (13) Å	T = 273 K
V = 6671.2 (10) Å3	Plate, pale purple
Z = 8	0.30 × 0.25 × 0.22 mm

Bruker APEXII CCD diffractometer	3065 independent reflections
Radiation source: fine-focus sealed tube	2478 reflections with I > 2σ(I)
graphite	Rint = 0.049
φ and ω scans	θmax = 25.2°, θmin = 2.2°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −28→42
Tmin = 0.453, Tmax = 0.552	k = −13→14
16336 measured reflections	l = −18→18

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)] = 0.036	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.097	H-atom parameters constrained
S = 1.06	w = 1/[σ2(Fo2) + (0.0479P)2 + 31.5675P] where P = (Fo2 + 2Fc2)/3
3065 reflections	(Δ/σ)max < 0.001
227 parameters	Δρmax = 1.56 e Å−3
27 restraints	Δρmin = −0.86 e Å−3

	x	y	z	Uiso*/Ueq
Pr1	0.2500	1.08315 (12)	0.2500	0.0216 (5)
Ag1	0.11088 (6)	0.60988 (15)	0.56463 (12)	0.0439 (6)
C2	0.1570 (6)	0.8876 (17)	0.4208 (13)	0.031 (5)
C6	0.1963 (6)	0.9230 (16)	0.3979 (13)	0.027 (4)
C3	0.1260 (7)	0.943 (2)	0.3901 (17)	0.048 (6)
H3	0.1292	1.0038	0.3555	0.058*
C1	0.1508 (6)	0.7976 (18)	0.4725 (13)	0.033 (5)
H1	0.1716	0.7607	0.4945	0.040*
C4	0.0904 (8)	0.908 (2)	0.411 (2)	0.067 (9)
H4	0.0692	0.9439	0.3899	0.081*
C5	0.0867 (7)	0.816 (2)	0.4631 (18)	0.054 (7)
H5	0.0625	0.7927	0.4782	0.065*
N1	0.1163 (5)	0.7608 (15)	0.4925 (12)	0.040 (5)
O1	0.2002 (4)	0.9976 (12)	0.3439 (9)	0.035 (3)
O2	0.2235 (4)	0.8725 (12)	0.4344 (9)	0.033 (3)
N2	0.1025 (5)	0.4681 (15)	0.6456 (12)	0.037 (4)
C7	0.1323 (6)	0.4144 (16)	0.6770 (14)	0.032 (5)
H7	0.1563	0.4385	0.6610	0.038*
C11	0.0685 (8)	0.434 (2)	0.669 (2)	0.057 (8)
H11	0.0474	0.4718	0.6489	0.069*
Cl1	0.0000	0.6849 (10)	0.5898 (10)	0.080 (4)
O7	0.0000	0.803 (3)	0.588 (4)	0.150 (19)
O6	0.0000	0.647 (5)	0.685 (4)	0.25 (4)
C8	0.1300 (6)	0.3255 (16)	0.7316 (13)	0.030 (5)
C9	0.0945 (7)	0.292 (2)	0.7558 (19)	0.057 (8)
H9	0.0914	0.2344	0.7941	0.069*
C10	0.0631 (8)	0.346 (3)	0.723 (3)	0.082 (12)
H10	0.0388	0.3232	0.7362	0.098*
C12	0.1652 (6)	0.2676 (16)	0.7619 (13)	0.028 (4)
O3	0.1962 (4)	0.3019 (12)	0.7341 (9)	0.032 (3)
O4	0.1611 (4)	0.1878 (13)	0.8104 (11)	0.044 (4)
O1W	0.2180 (4)	0.9435 (12)	0.1603 (9)	0.035 (4)
H1W	0.2373	0.9195	0.1295	0.053*
H2W	0.1996	0.8918	0.1807	0.053*
O2W	0.2515 (5)	1.1653 (13)	0.3996 (10)	0.046 (4)
H3W	0.2615	1.2394	0.4110	0.069*
H4W	0.2454	1.1409	0.4486	0.069*
O3W	0.1776 (8)	0.5000	0.5000	0.080 (10)
H5W	0.1920	0.5010	0.4583	0.120*
O5	0.0324 (9)	0.643 (3)	0.565 (3)	0.19 (2)

	U11	U22	U33	U12	U13	U23
Pr1	0.0227 (9)	0.0223 (8)	0.0199 (8)	0.000	0.0012 (6)	0.000
Ag1	0.0482 (12)	0.0376 (11)	0.0458 (11)	−0.0044 (9)	0.0028 (8)	0.0151 (8)
C2	0.035 (12)	0.033 (11)	0.024 (10)	0.001 (10)	0.006 (9)	0.001 (9)
C6	0.032 (12)	0.025 (10)	0.023 (10)	0.000 (9)	0.005 (9)	−0.004 (8)
C3	0.038 (14)	0.051 (15)	0.054 (15)	0.000 (12)	0.009 (12)	0.023 (12)
C1	0.034 (12)	0.038 (12)	0.028 (10)	−0.003 (10)	0.003 (9)	0.004 (10)
C4	0.035 (15)	0.07 (2)	0.09 (2)	0.003 (14)	0.004 (15)	0.043 (17)
C5	0.034 (14)	0.060 (17)	0.069 (18)	−0.005 (13)	0.012 (12)	0.023 (14)
N1	0.039 (11)	0.040 (11)	0.040 (10)	−0.002 (9)	0.006 (8)	0.014 (9)
O1	0.034 (8)	0.032 (8)	0.037 (8)	0.000 (7)	0.005 (6)	0.013 (7)
O2	0.029 (8)	0.038 (8)	0.031 (8)	0.000 (7)	0.000 (6)	0.005 (7)
N2	0.034 (11)	0.033 (10)	0.045 (11)	0.000 (8)	0.002 (8)	0.010 (8)
C7	0.030 (12)	0.028 (11)	0.037 (12)	−0.006 (9)	0.001 (9)	0.001 (9)
C11	0.037 (15)	0.054 (17)	0.08 (2)	0.006 (12)	0.003 (13)	0.029 (15)
Cl1	0.040 (6)	0.070 (8)	0.130 (11)	0.000	0.000	0.009 (7)
O7	0.17 (5)	0.09 (3)	0.19 (5)	0.000	0.000	0.04 (3)
O6	0.45 (13)	0.14 (5)	0.15 (6)	0.000	0.000	0.02 (4)
C8	0.030 (12)	0.024 (11)	0.036 (12)	−0.002 (9)	0.004 (9)	0.001 (9)
C9	0.034 (14)	0.054 (16)	0.08 (2)	−0.002 (12)	0.005 (13)	0.042 (15)
C10	0.029 (15)	0.08 (2)	0.13 (3)	0.000 (15)	0.004 (17)	0.06 (2)
C12	0.026 (11)	0.028 (11)	0.031 (11)	0.000 (9)	0.003 (8)	−0.005 (9)
O3	0.027 (8)	0.031 (8)	0.037 (8)	−0.005 (6)	0.002 (6)	−0.005 (6)
O4	0.031 (9)	0.044 (10)	0.056 (10)	0.005 (7)	0.007 (7)	0.023 (8)
O1W	0.029 (8)	0.035 (8)	0.041 (9)	−0.006 (6)	0.006 (7)	−0.009 (7)
O2W	0.071 (12)	0.044 (10)	0.024 (8)	−0.021 (9)	0.013 (8)	−0.010 (7)
O3W	0.047 (16)	0.15 (3)	0.040 (14)	0.000	0.000	−0.002 (17)
O5	0.07 (2)	0.14 (3)	0.35 (6)	0.04 (2)	0.07 (3)	0.12 (3)

Pr1—O3i	2.390 (14)	N2—C11	1.32 (3)
Pr1—O1W	2.477 (14)	N2—C7	1.34 (3)
Pr1—O2W	2.495 (14)	C7—C8	1.38 (3)
Pr1—O1	2.504 (13)	C7—H7	0.9300
Ag1—N2	2.165 (18)	C11—C10	1.37 (4)
Ag1—N1	2.175 (18)	C11—H11	0.9300
Ag1—O4ii	2.777 (16)	Cl1—O5iv	1.31 (3)
Ag1—O5	2.81 (3)	Cl1—O5	1.31 (3)
Ag1—O3W	2.90 (2)	Cl1—O7	1.46 (4)
Ag1—Ag1iii	3.357 (2)	Cl1—O6	1.52 (5)
C2—C3	1.37 (3)	C8—C9	1.37 (3)
C2—C1	1.38 (3)	C8—C12	1.51 (3)
C2—C6	1.50 (3)	C9—C10	1.39 (4)
C6—O1	1.24 (2)	C9—H9	0.9300
C6—O2	1.27 (3)	C10—H10	0.9300
C3—C4	1.37 (4)	C12—O4	1.24 (2)
C3—H3	0.9300	C12—O3	1.25 (2)
C1—N1	1.34 (3)	O1W—H1W	0.88
C1—H1	0.9300	O1W—H2W	0.97
C4—C5	1.39 (4)	O2W—H3W	1.00
C4—H4	0.9300	O2W—H4W	0.83
C5—N1	1.33 (3)	O3W—H5W	0.82
C5—H5	0.9300
O3i—Pr1—O3v	106.9 (7)	C3—C4—H4	120.8
O3i—Pr1—O1W	146.7 (5)	C5—C4—H4	120.8
O3v—Pr1—O1W	89.7 (5)	N1—C5—C4	123 (2)
O3i—Pr1—O1Wvi	89.7 (5)	N1—C5—H5	118.7
O3v—Pr1—O1Wvi	146.7 (5)	C4—C5—H5	118.7
O1W—Pr1—O1Wvi	91.5 (7)	C5—N1—C1	118 (2)
O3i—Pr1—O2W	69.4 (5)	C5—N1—Ag1	122.9 (16)
O3v—Pr1—O2W	82.3 (5)	C1—N1—Ag1	119.1 (15)
O1W—Pr1—O2W	142.9 (5)	C6—O1—Pr1	140.4 (13)
O1Wvi—Pr1—O2W	76.7 (5)	C11—N2—C7	118 (2)
O3i—Pr1—O2Wvi	82.3 (5)	C11—N2—Ag1	122.3 (16)
O3v—Pr1—O2Wvi	69.4 (5)	C7—N2—Ag1	119.9 (14)
O1W—Pr1—O2Wvi	76.7 (5)	N2—C7—C8	124 (2)
O1Wvi—Pr1—O2Wvi	142.9 (5)	N2—C7—H7	117.8
O2W—Pr1—O2Wvi	131.9 (7)	C8—C7—H7	117.8
O3i—Pr1—O1	139.0 (5)	N2—C11—C10	123 (2)
O3v—Pr1—O1	75.5 (5)	N2—C11—H11	118.7
O1W—Pr1—O1	72.5 (5)	C10—C11—H11	118.7
O1Wvi—Pr1—O1	73.2 (5)	O5iv—Cl1—O5	122 (4)
O2W—Pr1—O1	70.5 (5)	O5iv—Cl1—O7	113.2 (18)
O2Wvi—Pr1—O1	132.8 (5)	O5—Cl1—O7	113.2 (18)
O3i—Pr1—O1vi	75.5 (5)	O5iv—Cl1—O6	98 (2)
O3v—Pr1—O1vi	139.0 (5)	O5—Cl1—O6	98 (2)
O1W—Pr1—O1vi	73.2 (5)	O7—Cl1—O6	109 (3)
O1Wvi—Pr1—O1vi	72.5 (5)	C9—C8—C7	117 (2)
O2W—Pr1—O1vi	132.8 (5)	C9—C8—C12	122.1 (19)
O2Wvi—Pr1—O1vi	70.5 (5)	C7—C8—C12	120.9 (19)
O1—Pr1—O1vi	129.9 (7)	C8—C9—C10	119 (2)
N2—Ag1—N1	174.6 (7)	C8—C9—H9	120.3
N2—Ag1—Ag1iii	71.2 (5)	C10—C9—H9	120.3
N1—Ag1—Ag1iii	113.5 (5)	C11—C10—C9	119 (3)
C3—C2—C1	118 (2)	C11—C10—H10	120.5
C3—C2—C6	121.2 (19)	C9—C10—H10	120.5
C1—C2—C6	121 (2)	O4—C12—O3	124.9 (19)
O1—C6—O2	124.6 (19)	O4—C12—C8	117.7 (18)
O1—C6—C2	118.3 (19)	O3—C12—C8	117.4 (18)
O2—C6—C2	117.1 (17)	C12—O3—Pr1i	150.2 (13)
C4—C3—C2	120 (2)	Pr1—O1W—H1W	100.1
C4—C3—H3	119.9	Pr1—O1W—H2W	126.4
C2—C3—H3	119.9	H1W—O1W—H2W	118.2
N1—C1—C2	123 (2)	Pr1—O2W—H3W	122.7
N1—C1—H1	118.3	Pr1—O2W—H4W	131.7
C2—C1—H1	118.3	H3W—O2W—H4W	105.6
C3—C4—C5	118 (3)

D—H···A	D—H	H···A	D···A	D—H···A
O1W—H1W···O2vi	0.88	1.79	2.67 (2)	179
O1W—H2W···O4iii	0.97	1.68	2.63 (2)	163
O2W—H3W···O2vii	1.00	1.77	2.77 (2)	176
O2W—H4W···O2viii	0.83	1.95	2.76 (2)	162
O3W—H5W···O1Wix	0.82	2.15	2.91 (2)	157

Table 1

Selected bond lengths (Å)

Pr1—O3i	2.390 (14)
Pr1—O1W	2.477 (14)
Pr1—O2W	2.495 (14)
Pr1—O1	2.504 (13)
Ag1—N2	2.165 (18)
Ag1—N1	2.175 (18)
Ag1—O4ii	2.777 (16)
Ag1—O5	2.81 (3)
Ag1—O3W	2.90 (2)

Symmetry codes: (i) ; (ii) .

Table 2

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1W—H1W⋯O2iii	0.88	1.79	2.67 (2)	179
O1W—H2W⋯O4iv	0.97	1.68	2.63 (2)	163
O2W—H3W⋯O2v	1.00	1.77	2.77 (2)	176
O2W—H4W⋯O2vi	0.83	1.95	2.76 (2)	162
O3W—H5W⋯O1Wvii	0.82	2.15	2.91 (2)	157

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