catena-Poly[[silver(I)-[mu]-[(E)-1,2-bis(2-pyridyl)ethylene-N:N']] nitrate]

In the title complex, {[Ag(C₁₂H₁₀N₂)]NO₃}_n, the Ag atom, which is in a linear AgN₂ geometry, is surrounded by two trans-related N atoms of two bpe ligands [Ag-N = 2.173 (3) and 2.176 (3) Å; bpe is trans-1,2-bis(2-pyridyl)­ethyl­ene]. The bpe ligands bridge neighbouring Ag atoms to form zigzag polymeric chains in the lattice. These adjacent one-dimensional zigzag chains are extended into a three-dimensional supramolecular array by strong interchain [pi]...[pi] interactions between the pyridyl rings of adjacent chains.

Computing details

Data collection: R3m Software (Siemens, 1990); cell refinement: R3m Software; data reduction: R3m Software; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Sheldrick, 1995); software used to prepare material for publication: SHELXL97.

catena-poly[[Silver(I)-µ-[(E)-1,2-bis(2-pyridyl)ethylene-N:N']]nitrate]

Crystal data

[AgC12H10N2]^+·NO3^−	F(000) = 696
Mr = 352.10	Dx = 1.936 Mg m^−3
Monoclinic, P21/n	Mo Kα radiation, λ = 0.71073 Å
a = 8.516 (3) Å	Cell parameters from 25 reflections
b = 10.915 (4) Å	θ = 7.5–15.0°
c = 13.054 (6) Å	µ = 1.68 mm^−1
β = 95.31 (1)°	T = 293 K
V = 1208.2 (8) Å^3	Block, colourless
Z = 4	0.3 × 0.3 × 0.2 mm

Data collection

Siemens R3m diffractometer	2081 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.019
Graphite monochromator	θmax = 27.5°, θmin = 2.4°
ω scan	h = 0→11
Absorption correction: semi-empirical (using intensity measurements) ψ-scans (North et al., 1968)	k = 0→14
Tmin = 0.566, Tmax = 0.716	l = −16→16
2944 measured reflections	2 standard reflections every 150 reflections
2764 independent reflections	intensity decay: none

Refinement

Refinement on F^2	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: inferred from neighbouring sites
R[F^2 > 2σ(F^2)] = 0.034	H atoms treated by a mixture of independent and constrained refinement
wR(F^2) = 0.080	Calculated w = 1/[σ^2(Fo^2) + (0.0341P)^2 + 0.7235P] where P = (Fo^2 + 2Fc^2)/3
S = 1.02	(Δ/σ)max = 0.002
2764 reflections	Δρmax = 0.37 e Å^−3
173 parameters	Δρmin = −0.33 e Å^−3
0 restraints	Extinction correction: SHELXL97 (Sheldrick, 1997), Fc^*=kFc[1+0.001xFc^2λ^3/sin(2θ)]^-1/4
Primary atom site location: structure-invariant direct methods	Extinction coefficient: 0.0029 (5)

Special details

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
Ag1	0.05989 (3)	0.34643 (3)	0.199478 (19)	0.05313 (14)
N1	−0.0113 (3)	0.3417 (3)	0.3553 (2)	0.0378 (6)
N2	0.6033 (3)	0.1320 (2)	0.5391 (2)	0.0381 (6)
C1	−0.1542 (4)	0.3853 (3)	0.3727 (3)	0.0454 (8)
H1A	−0.2240	0.4112	0.3148	0.080*
C2	−0.2040 (4)	0.3957 (3)	0.4693 (3)	0.0485 (9)
H2A	−0.3069	0.4277	0.4781	0.080*
C3	−0.1058 (5)	0.3587 (3)	0.5523 (3)	0.0516 (9)
H3A	−0.1384	0.3647	0.6206	0.080*
C4	0.0409 (4)	0.3127 (3)	0.5360 (3)	0.0483 (9)
H4A	0.1115	0.2851	0.5929	0.080*
C5	0.0873 (4)	0.3063 (3)	0.4369 (2)	0.0370 (7)
C6	0.2407 (4)	0.2576 (3)	0.4143 (2)	0.0414 (8)
H6A	0.2569	0.2447	0.3433	0.080*
C7	0.3591 (4)	0.2300 (3)	0.4825 (2)	0.0406 (8)
H7A	0.3467	0.2482	0.5533	0.080*
C8	0.5073 (4)	0.1737 (3)	0.4583 (2)	0.0359 (7)
C9	0.5484 (4)	0.1607 (3)	0.3581 (2)	0.0445 (8)
H9A	0.4803	0.1921	0.3015	0.080*
C10	0.6881 (4)	0.1038 (3)	0.3409 (3)	0.0480 (9)
H10A	0.7175	0.0942	0.2721	0.080*
C11	0.7833 (4)	0.0592 (4)	0.4230 (3)	0.0505 (9)
H11A	0.8800	0.0181	0.4122	0.080*
C12	0.7379 (4)	0.0757 (3)	0.5207 (3)	0.0480 (9)
H12A	0.8048	0.0448	0.5782	0.080*
N3	0.4266 (4)	0.5123 (3)	0.2767 (2)	0.0496 (8)
O1	0.2829 (3)	0.5328 (3)	0.2610 (2)	0.0789 (9)
O2	0.4815 (4)	0.4198 (3)	0.2396 (2)	0.0743 (9)
O3	0.5142 (4)	0.5839 (3)	0.3266 (3)	0.0945 (11)

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Ag1	0.05061 (18)	0.0805 (2)	0.02771 (15)	0.00475 (16)	0.00050 (10)	0.00141 (14)
N1	0.0360 (13)	0.0443 (15)	0.0329 (13)	−0.0055 (12)	0.0029 (10)	0.0005 (12)
N2	0.0389 (14)	0.0428 (16)	0.0323 (13)	−0.0032 (12)	0.0012 (11)	0.0023 (11)
C1	0.0379 (18)	0.047 (2)	0.051 (2)	−0.0006 (15)	0.0036 (15)	0.0020 (16)
C2	0.045 (2)	0.045 (2)	0.058 (2)	−0.0016 (16)	0.0154 (17)	−0.0029 (17)
C3	0.058 (2)	0.057 (2)	0.0431 (19)	−0.0047 (19)	0.0195 (17)	−0.0081 (17)
C4	0.049 (2)	0.062 (2)	0.0347 (17)	−0.0005 (17)	0.0077 (15)	−0.0007 (16)
C5	0.0376 (16)	0.0420 (18)	0.0313 (16)	−0.0052 (14)	0.0020 (13)	−0.0022 (13)
C6	0.0437 (18)	0.051 (2)	0.0299 (16)	0.0021 (16)	0.0035 (13)	−0.0004 (14)
C7	0.0405 (17)	0.052 (2)	0.0292 (15)	−0.0015 (15)	0.0033 (13)	−0.0038 (14)
C8	0.0380 (16)	0.0382 (18)	0.0309 (15)	−0.0084 (14)	0.0003 (12)	0.0004 (13)
C9	0.0508 (19)	0.051 (2)	0.0312 (16)	−0.0049 (17)	0.0031 (14)	−0.0011 (16)
C10	0.053 (2)	0.051 (2)	0.0418 (19)	−0.0018 (17)	0.0154 (16)	−0.0067 (16)
C11	0.045 (2)	0.055 (2)	0.053 (2)	0.0060 (17)	0.0122 (16)	−0.0013 (18)
C12	0.045 (2)	0.050 (2)	0.047 (2)	0.0039 (16)	−0.0011 (16)	0.0071 (17)
N3	0.0516 (19)	0.059 (2)	0.0380 (16)	0.0036 (16)	0.0039 (14)	0.0072 (14)
O1	0.0528 (18)	0.116 (3)	0.0683 (19)	0.0192 (18)	0.0084 (15)	−0.0126 (19)
O2	0.082 (2)	0.065 (2)	0.074 (2)	0.0249 (17)	−0.0008 (17)	−0.0039 (16)
O3	0.092 (3)	0.083 (2)	0.102 (3)	−0.012 (2)	−0.021 (2)	−0.020 (2)

Geometric parameters (Å, º)

Ag1—N2^i	2.173 (3)	C5—C6	1.465 (4)
Ag1—N1	2.176 (3)	C6—C7	1.317 (4)
N1—C1	1.345 (4)	C7—C8	1.464 (4)
N1—C5	1.351 (4)	C8—C9	1.392 (4)
N2—C12	1.341 (4)	C9—C10	1.378 (5)
N2—C8	1.352 (4)	C10—C11	1.371 (5)
N2—Ag1^ii	2.173 (3)	C11—C12	1.379 (5)
C1—C2	1.372 (5)	N3—O3	1.226 (4)
C2—C3	1.367 (5)	N3—O2	1.230 (4)
C3—C4	1.381 (5)	N3—O1	1.243 (4)
C4—C5	1.389 (5)
N2^i—Ag1—N1	172.05 (10)	C4—C5—C6	122.8 (3)
C1—N1—C5	118.3 (3)	C7—C6—C5	126.0 (3)
C1—N1—Ag1	119.0 (2)	C6—C7—C8	124.9 (3)
C5—N1—Ag1	122.5 (2)	N2—C8—C9	120.8 (3)
C12—N2—C8	118.7 (3)	N2—C8—C7	116.4 (3)
C12—N2—Ag1^ii	116.5 (2)	C9—C8—C7	122.8 (3)
C8—N2—Ag1^ii	124.8 (2)	C10—C9—C8	119.7 (3)
N1—C1—C2	123.1 (3)	C11—C10—C9	119.3 (3)
C3—C2—C1	119.1 (3)	C10—C11—C12	118.7 (3)
C2—C3—C4	118.7 (3)	N2—C12—C11	122.8 (3)
C3—C4—C5	120.1 (3)	O3—N3—O2	119.9 (4)
N1—C5—C4	120.7 (3)	O3—N3—O1	120.9 (4)
N1—C5—C6	116.5 (3)	O2—N3—O1	119.2 (4)

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