metal-organic compounds
Bis[μ-2,3-bis(imidazol-1-ylmethyl)quinoxaline]disilver(I) bis(tetrafluoridoborate)
aCollege of Chemistry and Environmental Science, Hebei University, Baoding 071002, People's Republic of China, and bSchool of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, People's Republic of China
*Correspondence e-mail: dujl@mail.hbu.edu.cn
The title compound, [Ag2(C16H14N6)2](BF4)2, forms a centrosymmetric 22-membered metallamacrocycle via two AgI ions bridging two 2,3-bis(imidazol-1-ylmethyl)quinoxaline ligands. The AgI ions are coordinated by two N donors of the imidazole groups, forming an approximately linear coordination geometry.
Related literature
For related literature, see: Li, Liu et al. (2007); Li, Tao et al. (2007); Zhang et al. (2006); Zou et al. (2004).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 1998); cell SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1998); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536807066019/lh2577sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807066019/lh2577Isup2.hkl
2,3-bis(imidazol-1-ylmethyl)quinoxaline was synthesized by a modified literature method (Li, Liu et al., 2007). A solution of 2,3-bis(imidazol-1-ylmethyl)quinoxaline (32 mg, 0.1 mmol) in MeOH (10 ml) was carefully layered on top of a AgBF4 (20 mg, 0.1 mmol) solution in H2O in a test-tube, which was placed in the darkness. After 10 d at room temperature, coloress single crystals of (I) were obtained (yield: 30 mg, 30%).
The H atoms were placed in calculated positions and treated in the subsequent
as riding atoms, with C—H = 0.93 and 0.97 Å; Uiso(H) = 1.2 Ueq.The synthesis of metal-organic macrocyclic and polymeric compounds have drawn much attention in rcecnt years not only because of their interesting properties and potential applications, but also due to variety of structural topologies (Zou, et al., 2004; Zhang et al., 2006; Li Tao et al., 2007). Much progress has been reported in the study of cyrstal engineering of supramolecular architectures using N-donor ligands (Li, Liu et al., 2007). The title compound (I) is a dinuclear Ag(I) complex formed with two 2,3-bis(imidazol-1-ylmethyl)quinoxaline ligands (Fig.1). The AgI atoms are coordinated by two N donors of the imiazole groups, forming a approximately linear coordination geometry. The molecular structure forms a centrosymmetric 22-membered metallacrocycle.
For related literature, see: Li, Liu et al. (2007); Li, Tao et al. (2007); Zhang et al. (2006); Zou et al. (2004).
Data collection: SMART (Bruker, 1998); cell
SAINT (Bruker, 1998); data reduction: SAINT (Bruker, 1998); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1998); software used to prepare material for publication: SHELXTL (Bruker, 1998).Fig. 1. the molecular with 30% displacement probability. Unlabelled atoms are generated by the symmetry operation (- x, - y, - z). Only the symmetry unique BF4 anion is shown. |
[Ag2(C16H14N6)2](BF4)2 | Z = 1 |
Mr = 970.02 | F(000) = 480 |
Triclinic, P1 | Dx = 1.827 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.5398 (19) Å | Cell parameters from 1538 reflections |
b = 9.311 (2) Å | θ = 2.3–23.9° |
c = 12.104 (3) Å | µ = 1.20 mm−1 |
α = 76.350 (4)° | T = 293 K |
β = 76.603 (4)° | Block, colorless |
γ = 73.208 (4)° | 0.20 × 0.18 × 0.16 mm |
V = 881.4 (4) Å3 |
Bruker SMART 1000 CCD area-detector diffractometer | 3556 independent reflections |
Radiation source: fine-focus sealed tube | 2326 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.023 |
φ and ω scans | θmax = 26.4°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | h = −10→10 |
Tmin = 0.796, Tmax = 0.831 | k = −11→10 |
5006 measured reflections | l = −11→15 |
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)] = 0.046 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.108 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0389P)2 + 1.1091P] where P = (Fo2 + 2Fc2)/3 |
3556 reflections | (Δ/σ)max = 0.001 |
253 parameters | Δρmax = 0.61 e Å−3 |
0 restraints | Δρmin = −0.47 e Å−3 |
[Ag2(C16H14N6)2](BF4)2 | γ = 73.208 (4)° |
Mr = 970.02 | V = 881.4 (4) Å3 |
Triclinic, P1 | Z = 1 |
a = 8.5398 (19) Å | Mo Kα radiation |
b = 9.311 (2) Å | µ = 1.20 mm−1 |
c = 12.104 (3) Å | T = 293 K |
α = 76.350 (4)° | 0.20 × 0.18 × 0.16 mm |
β = 76.603 (4)° |
Bruker SMART 1000 CCD area-detector diffractometer | 3556 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | 2326 reflections with I > 2σ(I) |
Tmin = 0.796, Tmax = 0.831 | Rint = 0.023 |
5006 measured reflections |
R[F2 > 2σ(F2)] = 0.046 | 0 restraints |
wR(F2) = 0.108 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.61 e Å−3 |
3556 reflections | Δρmin = −0.47 e Å−3 |
253 parameters |
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 | 0.19306 (5) | −0.02219 (5) | −0.09278 (4) | 0.05500 (18) | |
N1 | 0.2915 (5) | 0.1119 (5) | −0.0225 (3) | 0.0468 (11) | |
N2 | 0.3706 (5) | 0.2045 (4) | 0.1003 (3) | 0.0396 (10) | |
N3 | 0.5399 (5) | −0.0159 (5) | 0.3042 (3) | 0.0401 (10) | |
N4 | 0.2569 (5) | −0.0400 (5) | 0.4717 (3) | 0.0405 (10) | |
N5 | 0.0162 (4) | 0.2173 (4) | 0.2876 (3) | 0.0375 (9) | |
N6 | −0.0997 (5) | 0.1574 (5) | 0.1666 (3) | 0.0406 (10) | |
C1 | 0.3174 (6) | 0.0900 (6) | 0.0840 (4) | 0.0386 (11) | |
H1A | 0.3010 | 0.0061 | 0.1406 | 0.046* | |
C2 | 0.3313 (8) | 0.2453 (7) | −0.0763 (5) | 0.0663 (17) | |
H2A | 0.3255 | 0.2896 | −0.1531 | 0.080* | |
C3 | 0.3806 (8) | 0.3042 (7) | −0.0024 (5) | 0.0647 (17) | |
H3A | 0.4146 | 0.3944 | −0.0181 | 0.078* | |
C4 | 0.4059 (6) | 0.2277 (6) | 0.2072 (4) | 0.0429 (12) | |
H4A | 0.3248 | 0.3162 | 0.2323 | 0.051* | |
H4B | 0.5149 | 0.2479 | 0.1919 | 0.051* | |
C5 | 0.4007 (6) | 0.0904 (5) | 0.3025 (4) | 0.0368 (11) | |
C6 | 0.5423 (6) | −0.1396 (5) | 0.3899 (4) | 0.0385 (12) | |
C7 | 0.6913 (6) | −0.2570 (6) | 0.3952 (5) | 0.0484 (13) | |
H7A | 0.7858 | −0.2494 | 0.3399 | 0.058* | |
C8 | 0.6947 (7) | −0.3806 (6) | 0.4817 (5) | 0.0511 (14) | |
H8A | 0.7916 | −0.4584 | 0.4842 | 0.061* | |
C9 | 0.5553 (7) | −0.3927 (6) | 0.5666 (5) | 0.0526 (15) | |
H9A | 0.5607 | −0.4773 | 0.6259 | 0.063* | |
C10 | 0.4105 (7) | −0.2807 (6) | 0.5633 (5) | 0.0496 (14) | |
H10A | 0.3177 | −0.2901 | 0.6198 | 0.060* | |
C11 | 0.4018 (6) | −0.1520 (5) | 0.4748 (4) | 0.0398 (12) | |
C12 | 0.2574 (6) | 0.0785 (5) | 0.3867 (4) | 0.0366 (11) | |
C13 | 0.0938 (6) | 0.2008 (6) | 0.3887 (4) | 0.0444 (13) | |
H13A | 0.0175 | 0.1747 | 0.4588 | 0.053* | |
H13B | 0.1138 | 0.2977 | 0.3900 | 0.053* | |
C14 | −0.0340 (6) | 0.1069 (5) | 0.2612 (4) | 0.0393 (11) | |
H14A | −0.0237 | 0.0085 | 0.3039 | 0.047* | |
C15 | −0.0222 (6) | 0.3462 (6) | 0.2053 (5) | 0.0490 (13) | |
H15A | −0.0029 | 0.4408 | 0.2011 | 0.059* | |
C16 | −0.0935 (6) | 0.3070 (6) | 0.1324 (5) | 0.0512 (14) | |
H16A | −0.1327 | 0.3720 | 0.0681 | 0.061* | |
B1 | 0.1799 (10) | 0.6832 (8) | 0.2227 (7) | 0.0602 (19) | |
F1 | 0.2917 (7) | 0.5925 (6) | 0.1565 (6) | 0.162 (2) | |
F2 | 0.2537 (7) | 0.7599 (6) | 0.2651 (5) | 0.1363 (19) | |
F3 | 0.1090 (6) | 0.5843 (5) | 0.3089 (4) | 0.1135 (15) | |
F4 | 0.0645 (7) | 0.7784 (6) | 0.1667 (5) | 0.158 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ag1 | 0.0564 (3) | 0.0600 (3) | 0.0593 (3) | −0.0085 (2) | −0.0270 (2) | −0.0223 (2) |
N1 | 0.052 (3) | 0.053 (3) | 0.039 (2) | −0.010 (2) | −0.013 (2) | −0.012 (2) |
N2 | 0.046 (2) | 0.037 (2) | 0.041 (2) | −0.0140 (19) | −0.0130 (19) | −0.0062 (19) |
N3 | 0.040 (2) | 0.045 (3) | 0.042 (2) | −0.011 (2) | −0.0138 (19) | −0.013 (2) |
N4 | 0.045 (2) | 0.043 (2) | 0.036 (2) | −0.006 (2) | −0.0160 (19) | −0.0107 (19) |
N5 | 0.036 (2) | 0.037 (2) | 0.043 (2) | −0.0073 (18) | −0.0128 (18) | −0.0086 (19) |
N6 | 0.038 (2) | 0.045 (3) | 0.042 (2) | −0.009 (2) | −0.0150 (19) | −0.0063 (19) |
C1 | 0.041 (3) | 0.039 (3) | 0.037 (3) | −0.013 (2) | −0.006 (2) | −0.007 (2) |
C2 | 0.102 (5) | 0.068 (4) | 0.037 (3) | −0.034 (4) | −0.023 (3) | 0.004 (3) |
C3 | 0.100 (5) | 0.058 (4) | 0.044 (3) | −0.044 (4) | −0.016 (3) | 0.009 (3) |
C4 | 0.047 (3) | 0.041 (3) | 0.048 (3) | −0.016 (2) | −0.012 (2) | −0.013 (2) |
C5 | 0.040 (3) | 0.035 (3) | 0.041 (3) | −0.010 (2) | −0.020 (2) | −0.006 (2) |
C6 | 0.042 (3) | 0.038 (3) | 0.041 (3) | −0.004 (2) | −0.019 (2) | −0.014 (2) |
C7 | 0.044 (3) | 0.050 (3) | 0.053 (3) | −0.002 (3) | −0.018 (3) | −0.015 (3) |
C8 | 0.053 (3) | 0.038 (3) | 0.069 (4) | 0.004 (3) | −0.031 (3) | −0.020 (3) |
C9 | 0.070 (4) | 0.036 (3) | 0.057 (3) | −0.006 (3) | −0.035 (3) | −0.005 (2) |
C10 | 0.054 (3) | 0.047 (3) | 0.049 (3) | −0.006 (3) | −0.019 (3) | −0.010 (3) |
C11 | 0.043 (3) | 0.041 (3) | 0.041 (3) | 0.000 (2) | −0.020 (2) | −0.019 (2) |
C12 | 0.040 (3) | 0.039 (3) | 0.037 (3) | −0.007 (2) | −0.017 (2) | −0.014 (2) |
C13 | 0.043 (3) | 0.046 (3) | 0.047 (3) | 0.000 (2) | −0.018 (2) | −0.018 (2) |
C14 | 0.040 (3) | 0.034 (3) | 0.042 (3) | −0.004 (2) | −0.010 (2) | −0.006 (2) |
C15 | 0.054 (3) | 0.031 (3) | 0.063 (4) | −0.006 (2) | −0.027 (3) | 0.000 (3) |
C16 | 0.056 (3) | 0.043 (3) | 0.055 (3) | −0.009 (3) | −0.031 (3) | 0.006 (3) |
B1 | 0.074 (5) | 0.035 (4) | 0.072 (5) | −0.012 (4) | −0.025 (4) | −0.002 (3) |
F1 | 0.146 (5) | 0.094 (4) | 0.223 (6) | −0.029 (3) | 0.056 (4) | −0.072 (4) |
F2 | 0.184 (5) | 0.103 (4) | 0.162 (5) | −0.071 (4) | −0.066 (4) | −0.022 (3) |
F3 | 0.114 (3) | 0.109 (4) | 0.120 (4) | −0.053 (3) | −0.038 (3) | 0.024 (3) |
F4 | 0.170 (5) | 0.121 (4) | 0.154 (5) | 0.030 (4) | −0.099 (4) | 0.016 (3) |
Ag1—N1 | 2.105 (4) | C4—H4B | 0.9700 |
Ag1—N6i | 2.112 (4) | C5—C12 | 1.413 (7) |
Ag1—Ag1i | 3.5081 (11) | C6—C11 | 1.400 (7) |
N1—C1 | 1.317 (5) | C6—C7 | 1.421 (7) |
N1—C2 | 1.357 (7) | C7—C8 | 1.359 (8) |
N2—C1 | 1.342 (6) | C7—H7A | 0.9300 |
N2—C3 | 1.367 (7) | C8—C9 | 1.393 (8) |
N2—C4 | 1.471 (5) | C8—H8A | 0.9300 |
N3—C5 | 1.309 (6) | C9—C10 | 1.370 (7) |
N3—C6 | 1.355 (6) | C9—H9A | 0.9300 |
N4—C12 | 1.319 (6) | C10—C11 | 1.403 (7) |
N4—C11 | 1.370 (6) | C10—H10A | 0.9300 |
N5—C14 | 1.348 (6) | C12—C13 | 1.525 (6) |
N5—C15 | 1.378 (6) | C13—H13A | 0.9700 |
N5—C13 | 1.479 (5) | C13—H13B | 0.9700 |
N6—C14 | 1.319 (5) | C14—H14A | 0.9300 |
N6—C16 | 1.369 (6) | C15—C16 | 1.346 (7) |
N6—Ag1i | 2.112 (4) | C15—H15A | 0.9300 |
C1—H1A | 0.9300 | C16—H16A | 0.9300 |
C2—C3 | 1.348 (7) | B1—F4 | 1.318 (8) |
C2—H2A | 0.9300 | B1—F2 | 1.324 (8) |
C3—H3A | 0.9300 | B1—F1 | 1.328 (8) |
C4—C5 | 1.510 (7) | B1—F3 | 1.370 (8) |
C4—H4A | 0.9700 | ||
N1—Ag1—N6i | 178.55 (16) | C8—C7—H7A | 120.2 |
N1—Ag1—Ag1i | 97.02 (11) | C6—C7—H7A | 120.2 |
N6i—Ag1—Ag1i | 84.42 (11) | C7—C8—C9 | 121.1 (5) |
C1—N1—C2 | 105.7 (4) | C7—C8—H8A | 119.5 |
C1—N1—Ag1 | 127.6 (4) | C9—C8—H8A | 119.5 |
C2—N1—Ag1 | 126.6 (3) | C10—C9—C8 | 120.4 (5) |
C1—N2—C3 | 107.0 (4) | C10—C9—H9A | 119.8 |
C1—N2—C4 | 128.5 (4) | C8—C9—H9A | 119.8 |
C3—N2—C4 | 124.4 (4) | C9—C10—C11 | 120.2 (5) |
C5—N3—C6 | 117.6 (4) | C9—C10—H10A | 119.9 |
C12—N4—C11 | 117.1 (4) | C11—C10—H10A | 119.9 |
C14—N5—C15 | 107.3 (4) | N4—C11—C6 | 120.5 (5) |
C14—N5—C13 | 125.3 (4) | N4—C11—C10 | 120.1 (5) |
C15—N5—C13 | 127.4 (4) | C6—C11—C10 | 119.3 (4) |
C14—N6—C16 | 106.0 (4) | N4—C12—C5 | 121.7 (4) |
C14—N6—Ag1i | 123.6 (3) | N4—C12—C13 | 114.8 (4) |
C16—N6—Ag1i | 130.3 (3) | C5—C12—C13 | 123.4 (4) |
N1—C1—N2 | 111.2 (4) | N5—C13—C12 | 112.3 (3) |
N1—C1—H1A | 124.4 | N5—C13—H13A | 109.2 |
N2—C1—H1A | 124.4 | C12—C13—H13A | 109.2 |
C3—C2—N1 | 110.2 (5) | N5—C13—H13B | 109.2 |
C3—C2—H2A | 124.9 | C12—C13—H13B | 109.2 |
N1—C2—H2A | 124.9 | H13A—C13—H13B | 107.9 |
C2—C3—N2 | 106.0 (5) | N6—C14—N5 | 110.7 (4) |
C2—C3—H3A | 127.0 | N6—C14—H14A | 124.6 |
N2—C3—H3A | 127.0 | N5—C14—H14A | 124.6 |
N2—C4—C5 | 111.8 (4) | C16—C15—N5 | 105.9 (5) |
N2—C4—H4A | 109.3 | C16—C15—H15A | 127.1 |
C5—C4—H4A | 109.3 | N5—C15—H15A | 127.1 |
N2—C4—H4B | 109.3 | C15—C16—N6 | 110.1 (4) |
C5—C4—H4B | 109.3 | C15—C16—H16A | 125.0 |
H4A—C4—H4B | 107.9 | N6—C16—H16A | 125.0 |
N3—C5—C12 | 121.8 (4) | F4—B1—F2 | 110.1 (6) |
N3—C5—C4 | 115.6 (4) | F4—B1—F1 | 112.2 (7) |
C12—C5—C4 | 122.6 (4) | F2—B1—F1 | 110.3 (7) |
N3—C6—C11 | 121.2 (4) | F4—B1—F3 | 109.3 (7) |
N3—C6—C7 | 119.3 (5) | F2—B1—F3 | 111.0 (6) |
C11—C6—C7 | 119.5 (5) | F1—B1—F3 | 103.8 (6) |
C8—C7—C6 | 119.5 (5) | ||
Ag1i—Ag1—N1—C1 | 60.4 (4) | N3—C6—C11—N4 | 1.3 (6) |
Ag1i—Ag1—N1—C2 | −114.9 (5) | C7—C6—C11—N4 | 179.8 (4) |
C2—N1—C1—N2 | 0.5 (6) | N3—C6—C11—C10 | −178.8 (4) |
Ag1—N1—C1—N2 | −175.5 (3) | C7—C6—C11—C10 | −0.3 (6) |
C3—N2—C1—N1 | −0.6 (6) | C9—C10—C11—N4 | −179.9 (4) |
C4—N2—C1—N1 | 176.8 (4) | C9—C10—C11—C6 | 0.3 (7) |
C1—N1—C2—C3 | −0.2 (7) | C11—N4—C12—C5 | −0.1 (6) |
Ag1—N1—C2—C3 | 175.9 (4) | C11—N4—C12—C13 | −179.0 (4) |
N1—C2—C3—N2 | −0.2 (7) | N3—C5—C12—N4 | 0.4 (7) |
C1—N2—C3—C2 | 0.5 (6) | C4—C5—C12—N4 | −177.7 (4) |
C4—N2—C3—C2 | −177.1 (5) | N3—C5—C12—C13 | 179.1 (4) |
C1—N2—C4—C5 | 8.8 (7) | C4—C5—C12—C13 | 1.1 (6) |
C3—N2—C4—C5 | −174.2 (5) | C14—N5—C13—C12 | 61.3 (6) |
C6—N3—C5—C12 | 0.2 (6) | C15—N5—C13—C12 | −120.5 (5) |
C6—N3—C5—C4 | 178.4 (4) | N4—C12—C13—N5 | −115.4 (5) |
N2—C4—C5—N3 | 86.7 (5) | C5—C12—C13—N5 | 65.7 (6) |
N2—C4—C5—C12 | −95.2 (5) | C16—N6—C14—N5 | −1.0 (5) |
C5—N3—C6—C11 | −1.1 (6) | Ag1i—N6—C14—N5 | 179.5 (3) |
C5—N3—C6—C7 | −179.6 (4) | C15—N5—C14—N6 | 0.8 (5) |
N3—C6—C7—C8 | 179.4 (4) | C13—N5—C14—N6 | 179.3 (4) |
C11—C6—C7—C8 | 0.8 (7) | C14—N5—C15—C16 | −0.3 (6) |
C6—C7—C8—C9 | −1.3 (7) | C13—N5—C15—C16 | −178.8 (4) |
C7—C8—C9—C10 | 1.2 (8) | N5—C15—C16—N6 | −0.3 (6) |
C8—C9—C10—C11 | −0.7 (7) | C14—N6—C16—C15 | 0.8 (6) |
C12—N4—C11—C6 | −0.7 (6) | Ag1i—N6—C16—C15 | −179.7 (3) |
C12—N4—C11—C10 | 179.5 (4) |
Symmetry code: (i) −x, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | [Ag2(C16H14N6)2](BF4)2 |
Mr | 970.02 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 8.5398 (19), 9.311 (2), 12.104 (3) |
α, β, γ (°) | 76.350 (4), 76.603 (4), 73.208 (4) |
V (Å3) | 881.4 (4) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 1.20 |
Crystal size (mm) | 0.20 × 0.18 × 0.16 |
Data collection | |
Diffractometer | Bruker SMART 1000 CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 1998) |
Tmin, Tmax | 0.796, 0.831 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5006, 3556, 2326 |
Rint | 0.023 |
(sin θ/λ)max (Å−1) | 0.626 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.046, 0.108, 1.00 |
No. of reflections | 3556 |
No. of parameters | 253 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.61, −0.47 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 1998).
Ag1—N1 | 2.105 (4) | Ag1—N6i | 2.112 (4) |
N1—Ag1—N6i | 178.55 (16) |
Symmetry code: (i) −x, −y, −z. |
Acknowledgements
The authors thank Hebei University for supporting this work.
References
Bruker (1998). SMART (Version 5.051), SAINT (Version 5.01), SADABS (Version 2.03) and SHELXTL (Version 6.1). Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
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The synthesis of metal-organic macrocyclic and polymeric compounds have drawn much attention in rcecnt years not only because of their interesting properties and potential applications, but also due to variety of structural topologies (Zou, et al., 2004; Zhang et al., 2006; Li Tao et al., 2007). Much progress has been reported in the study of cyrstal engineering of supramolecular architectures using N-donor ligands (Li, Liu et al., 2007). The title compound (I) is a dinuclear Ag(I) complex formed with two 2,3-bis(imidazol-1-ylmethyl)quinoxaline ligands (Fig.1). The AgI atoms are coordinated by two N donors of the imiazole groups, forming a approximately linear coordination geometry. The molecular structure forms a centrosymmetric 22-membered metallacrocycle.