catena-Poly[[silver(I)-μ-4-aminopyridine] perchlorate]: a 1-D staircase coordination polymer.

Reaction of 4-amino-pyridine with silver(I) perchlorate leads to a one-dimensional coordination polymer, {[Ag(C(5)H(6)N(2))]ClO(4)}(n), in which the amino-pyridine binds through both N atoms. The perchlorate anion is hydrogen bonded to the amino H atoms and inter-acts weakly with the silver(I) atoms (Ag-O > 2.70 Å), both located on inversion centres, and some aromatic H atoms (O-H > 2.55 ÅA), thereby extending the dimensionality of the assembly. This is the first silver complex in which this ligand acts in a bridging mode.

Related literature

For discrete silver complexes of the same ligand, see: Kristian­sson (2000 ▶); Abu-Youssef et al. (2006 ▶); Liu et al. (2005 ▶); Zhu et al. (2003a ▶,b ▶); Li et al. (2005 ▶); Ma et al. (2004 ▶). For metallosupra­molecular assemblies derived from bridging heterocyclic ligands, see: Steel (2005 ▶). For the use of silver(I) for the self-assembly of both discrete and polymeric aggregates with diverse mol­ecular architectures, see: Fitchett & Steel (2006 ▶); O’Keefe & Steel (2007 ▶). For a review of the use of pyrazine and analogues as bridging ligands for silver(I)-based assemblies, see: Steel & Fitchett (2008 ▶).

Experimental

Crystal data

[Ag(C5H6N2)]ClO4

M = 301.44

Triclinic,

a = 5.0720 (2) Å

b = 9.0025 (3) Å

c = 9.5520 (3) Å

α = 93.198 (2)°

β = 96.992 (2)°

γ = 100.452 (2)°

V = 424.37 (3) Å3

Z = 2

Mo Kα radiation

μ = 2.67 mm−1

T = 113 K

0.35 × 0.11 × 0.05 mm

Data collection

Bruker APEXII CCD diffractometer

Absorption correction: multi-scan (SADABS; Bruker, 2009 ▶) T min = 0.455, T max = 0.878

9107 measured reflections

1740 independent reflections

1591 reflections with I > 2σ(I)

R int = 0.046

Refinement

R[F 2 > 2σ(F 2)] = 0.021

wR(F 2) = 0.051

S = 1.03

1740 reflections

127 parameters

H atoms treated by a mixture of independent and constrained refinement

Δρmax = 0.57 e Å−3

Δρmin = −0.78 e Å−3

Data collection: APEX2 (Bruker, 2009 ▶); cell refinement: SAINT (Bruker, 2009 ▶); 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 ▶); software used to prepare material for publication: SHELXTL.

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536810037682/bv2161sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536810037682/bv2161Isup2.hkl

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

[Ag(C5H6N2)]ClO4	Z = 2
Mr = 301.44	F(000) = 292
Triclinic, P1	Dx = 2.359 Mg m−3
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 5.0720 (2) Å	Cell parameters from 6232 reflections
b = 9.0025 (3) Å	θ = 3.0–26.4°
c = 9.5520 (3) Å	µ = 2.67 mm−1
α = 93.198 (2)°	T = 113 K
β = 96.992 (2)°	Prism, orange
γ = 100.452 (2)°	0.35 × 0.11 × 0.05 mm
V = 424.37 (3) Å3

Bruker APEXII CCD diffractometer	1740 independent reflections
Radiation source: fine-focus sealed tube	1591 reflections with I > 2σ(I)
graphite	Rint = 0.046
φ and ω scans	θmax = 26.4°, θmin = 2.3°
Absorption correction: multi-scan (SADABS; Bruker, 2009)	h = −6→6
Tmin = 0.455, Tmax = 0.878	k = −11→11
9107 measured reflections	l = −11→11

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)] = 0.021	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.051	H atoms treated by a mixture of independent and constrained refinement
S = 1.03	w = 1/[σ2(Fo2) + (0.0333P)2 + 0.1489P] where P = (Fo2 + 2Fc2)/3
1740 reflections	(Δ/σ)max = 0.017
127 parameters	Δρmax = 0.57 e Å−3
0 restraints	Δρmin = −0.78 e Å−3

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

	x	y	z	Uiso*/Ueq
Ag1	0.0000	0.0000	0.5000	0.02748 (9)
Ag2	0.5000	−0.5000	0.0000	0.02716 (9)
Cl1	−0.04375 (9)	−0.70217 (6)	0.19452 (5)	0.02471 (12)
O1	−0.0156 (4)	−0.81713 (18)	0.08849 (17)	0.0372 (4)
O2	0.0718 (4)	−0.7384 (2)	0.32954 (17)	0.0405 (4)
O3	0.0969 (3)	−0.55690 (18)	0.16137 (19)	0.0338 (4)
O4	−0.3233 (3)	−0.6953 (2)	0.1977 (2)	0.0530 (6)
N1	0.2684 (3)	−0.10407 (19)	0.38878 (18)	0.0212 (3)
C2	0.3565 (4)	−0.2298 (2)	0.4306 (2)	0.0253 (4)
H2A	0.3003	−0.2710	0.5139	0.030*
C3	0.5233 (4)	−0.3006 (2)	0.3584 (2)	0.0245 (4)
H3A	0.5804	−0.3886	0.3917	0.029*
C4	0.6080 (4)	−0.2422 (2)	0.2358 (2)	0.0187 (4)
C5	0.5244 (4)	−0.1101 (2)	0.1946 (2)	0.0224 (4)
H5A	0.5824	−0.0647	0.1134	0.027*
C6	0.3576 (4)	−0.0467 (2)	0.2725 (2)	0.0246 (4)
H6A	0.3017	0.0430	0.2427	0.030*
N2	0.7619 (3)	−0.3164 (2)	0.15325 (19)	0.0218 (3)
H2B	0.874 (5)	−0.362 (3)	0.199 (3)	0.026*
H2C	0.845 (5)	−0.259 (3)	0.097 (3)	0.026*

	U11	U22	U33	U12	U13	U23
Ag1	0.01995 (12)	0.03359 (15)	0.02912 (14)	0.00871 (9)	0.00516 (9)	−0.01157 (10)
Ag2	0.02874 (13)	0.02542 (14)	0.02684 (14)	0.00551 (9)	0.00580 (9)	−0.00782 (9)
Cl1	0.0227 (2)	0.0299 (3)	0.0266 (3)	0.01105 (19)	0.00968 (18)	0.0130 (2)
O1	0.0491 (10)	0.0312 (9)	0.0296 (9)	0.0013 (7)	0.0083 (7)	0.0022 (7)
O2	0.0520 (10)	0.0550 (11)	0.0238 (8)	0.0281 (9)	0.0100 (7)	0.0138 (8)
O3	0.0347 (8)	0.0259 (8)	0.0473 (10)	0.0105 (6)	0.0211 (7)	0.0102 (7)
O4	0.0238 (9)	0.0665 (13)	0.0815 (15)	0.0196 (8)	0.0229 (9)	0.0445 (12)
N1	0.0193 (8)	0.0232 (8)	0.0211 (8)	0.0061 (6)	0.0032 (6)	−0.0055 (7)
C2	0.0309 (11)	0.0270 (11)	0.0197 (10)	0.0059 (8)	0.0089 (8)	0.0023 (8)
C3	0.0322 (11)	0.0224 (10)	0.0225 (10)	0.0112 (8)	0.0075 (8)	0.0045 (8)
C4	0.0167 (9)	0.0202 (9)	0.0183 (9)	0.0031 (7)	0.0015 (7)	−0.0025 (7)
C5	0.0276 (10)	0.0207 (10)	0.0204 (10)	0.0058 (8)	0.0063 (8)	0.0037 (8)
C6	0.0270 (10)	0.0209 (10)	0.0269 (11)	0.0088 (8)	0.0020 (8)	0.0000 (8)
N2	0.0212 (8)	0.0233 (9)	0.0227 (9)	0.0069 (7)	0.0072 (7)	0.0004 (7)

Ag1—N1	2.1363 (16)	C2—H2A	0.9500
Ag1—N1i	2.1363 (16)	C3—C4	1.393 (3)
Ag2—N2ii	2.2582 (18)	C3—H3A	0.9500
Ag2—N2	2.2583 (18)	C4—C5	1.394 (3)
Cl1—O2	1.4301 (16)	C4—N2	1.399 (3)
Cl1—O4	1.4344 (16)	C5—C6	1.371 (3)
Cl1—O3	1.4430 (16)	C5—H5A	0.9500
Cl1—O1	1.4454 (17)	C6—H6A	0.9500
N1—C6	1.344 (3)	N2—H2B	0.85 (3)
N1—C2	1.353 (3)	N2—H2C	0.86 (3)
C2—C3	1.373 (3)
N1—Ag1—N1i	180.00 (5)	C4—C3—H3A	120.3
N2ii—Ag2—N2	180.0	C5—C4—C3	117.63 (18)
O2—Cl1—O4	109.54 (11)	C5—C4—N2	120.84 (18)
O2—Cl1—O3	109.91 (12)	C3—C4—N2	121.47 (18)
O4—Cl1—O3	108.88 (10)	C6—C5—C4	119.20 (19)
O2—Cl1—O1	108.65 (11)	C6—C5—H5A	120.4
O4—Cl1—O1	110.77 (13)	C4—C5—H5A	120.4
O3—Cl1—O1	109.08 (10)	N1—C6—C5	123.77 (19)
C6—N1—C2	116.76 (17)	N1—C6—H6A	118.1
C6—N1—Ag1	120.93 (13)	C5—C6—H6A	118.1
C2—N1—Ag1	122.31 (13)	C4—N2—Ag2	111.91 (12)
N1—C2—C3	123.15 (19)	C4—N2—H2B	115.5 (17)
N1—C2—H2A	118.4	Ag2—N2—H2B	104.1 (17)
C3—C2—H2A	118.4	C4—N2—H2C	113.7 (17)
C2—C3—C4	119.45 (19)	Ag2—N2—H2C	101.4 (17)
C2—C3—H3A	120.3	H2B—N2—H2C	109 (2)

D—H···A	D—H	H···A	D···A	D—H···A
N2—H2C···O1ii	0.86 (3)	2.16 (3)	2.984 (3)	161 (2)
N2—H2B···O3iii	0.85 (3)	2.29 (3)	2.984 (3)	139 (2)

Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2C⋯O1i	0.86 (3)	2.16 (3)	2.984 (3)	161 (2)
N2—H2B⋯O3ii	0.85 (3)	2.29 (3)	2.984 (3)	139 (2)

Symmetry codes: (i) ; (ii) .