metal-organic compounds
catena-Poly[[silver(I)-μ-bis{2-[(E)-phenyldiazenyl]-1H-imidazol-1-yl}methane] trifluoromethanesulfonate]
aHubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi, 435002, People's Republic of China
*Correspondence e-mail: jincm1999@yahoo.com
The title compound, {[Ag(C19H16N8)](CF3SO3)}n, is a coordination polymer with cationic chain motif. The Ag+ cation is coordinated by two unsubstituted imidazolyl N atoms of two independent 2-paBIM ligands [2-paBIM is bis{2-[(E)-phenyldiazenyl]-1H-imidazol-1-yl}methane]. The shortest Ag⋯Ag separation in a cationic chain is 8.841 (2) Å and the dihedral angle between two 2-phenyldiazenyl-imidazole planes in the same ligand is 74.7 (3)°. Weak C—H⋯O interactions are seen in the crystal.
Related literature
For background to metal-organic frameworks, see: Batten & Robson (1998); Burrows (2011); Leininger et al. (2000); Tanabe & Cohen (2011). For examples of supramolecular arrangements using multidentate N-donor spacer ligands, see: Custelcean (2010); Pschirer et al. (2002). For structures of related ligands, see: Hamilton & Ziegler (2004); Jin et al. (2009).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2001); cell SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; 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.
Supporting information
https://doi.org/10.1107/S1600536811035951/im2314sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811035951/im2314Isup2.hkl
An CH3CN solution (5 ml) of 2-paBIM (178 mg, 0.5 mmol) was slowly diffused into an aqueous solution (5 ml) of AgSO3CF3(128 mg, 0.5 mmol) in a test tube. Red crystals of [Ag(2-paBIM)SO3CF3]n were formed at the interface of solvent in two weeks and were obtained in 62% yield.
The structure was refined as a racemic twin using TWIN and BASF keywords. H atoms were positioned geometrically at distances of 0.93 (CH), and 0.97 (CH2) from the parent C atoms. A riding model was used during the
process. The Uiso values were constrained to be 1.2Ueq of the corresponding carrier atom.The construction of functional metal-organic frameworks is of great interest due to their intriguing network topologies and their potential applications as microporous, magnetic or catalytically active species or in the fields of nonlinear optics, molecular separation, toxic materials adsorption and molecular sensors etc. (Batten & Robson, 1998; Burrows, 2011; Leininger et al., 2000; Tanabe & Cohen, 2011). Such molecular architectures have been successfully designed and synthesized by judicious combination of a metal 'node' and an organic ligands as 'spacer'. The roles of counter anions and different solvent molecules are also of significant effect on supramolecular self-assembly. More recently, the molecular geometry and flexibility of multidentate N-donor spacer ligands play key roles in the field of molecular materials and supramolecular self-assemble crystal engineering. For example, 4, 4'-bipyridine, 1, 2-bis(4-pyridyl)ethane and trans-bis(4-pyridyl)ethene as ligands can form a lot of coordination polymers with different structural features (Custelcean, 2010; Pschirer et al., 2002). The coordination polymer frameworks which were built by methylene C-bridged bipyridine, bitriazole and bisimidazole ligands have also been described widely (Hamilton & Ziegler, 2004; Jin et al., 2009). Bis[2-((E)-phenyldiazenyl)-1H-imidazol-1-yl- methane (2-paBIM) is a flexibie V-shaped N-donor ligand containing azo groups which is built up by two methylene C-bridged substituted imidazole rings. The title compound, [Ag(2-paBIM)SO3CF3]n, (I), with a one-dimensional zigzag cationic chain structural motif was formed by the addition of a solution of 2-paBIM to AgSO3CF3.
Single crystal X-ray
reveals that complex (I) consists of one-dimensional cationic polymeric chains and uncoordinated CF3SO3-. The Ag+ ions are coordinated by two imidazolyl unsubstituted nitrogen atoms of independent 2-paBIM ligands, which act as bridges between silver(I) centers (Fig.1). The Ag+ ions show a coordination mode that is bent out of linearity with the bond angles of N—Ag—N being 153.9 (2)°. Ag—N bond lengths are 2.157 (5) Å and 2.170 (6) Å, respectively. Adjacent Ag······Ag distances in the same cationic chain are 8.841 (2) Å and the dihedral angle of the two 2-phenyldiazenyl-imidazole planes in the same ligand is 74.7 (3)°. Non-coordinated CF3SO3- anions are filled in the voids of each zigzag cationic chain and show through the weak C—H······O hydrogen-bond interactions (Table 1).For background to metal-organic frameworks, see: Batten & Robson (1998); Burrows (2011); Leininger et al. (2000); Tanabe & Cohen (2011). For examples of supramolecular arrangements using multidentate N-donor spacer ligands , see: Custelcean (2010); Pschirer et al. (2002). For structures of related ligands, see: Hamilton & Ziegler (2004); Jin et al. (2009).
Data collection: SMART (Bruker, 2001); cell
SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus (Bruker, 2001); 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 (Sheldrick, 2008).Fig. 1. Structure of (I) showing the atom-numbering of one asymmetry unit. Displacement ellipsoids are drawn at the 30% probability level. H atoms have been omitted for clarity. |
[Ag(C19H16N8)](CF3SO3) | F(000) = 1224 |
Mr = 613.34 | Dx = 1.739 Mg m−3 |
Orthorhombic, Pna21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2c -2n | Cell parameters from 4016 reflections |
a = 16.0251 (19) Å | θ = 2.4–24.4° |
b = 8.455 (1) Å | µ = 1.01 mm−1 |
c = 17.293 (2) Å | T = 298 K |
V = 2343.0 (5) Å3 | Block, red |
Z = 4 | 0.13 × 0.10 × 0.10 mm |
Bruker SMART CCD area-detector diffractometer | 4823 independent reflections |
Radiation source: fine-focus sealed tube | 4073 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.057 |
phi and ω scans | θmax = 28.3°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −21→16 |
Tmin = 0.879, Tmax = 0.905 | k = −11→11 |
11674 measured reflections | l = −23→19 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.065 | H-atom parameters constrained |
wR(F2) = 0.167 | w = 1/[σ2(Fo2) + (0.0908P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.13 | (Δ/σ)max = 0.023 |
4823 reflections | Δρmax = 1.08 e Å−3 |
326 parameters | Δρmin = −0.54 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 1807 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.54 (5) |
[Ag(C19H16N8)](CF3SO3) | V = 2343.0 (5) Å3 |
Mr = 613.34 | Z = 4 |
Orthorhombic, Pna21 | Mo Kα radiation |
a = 16.0251 (19) Å | µ = 1.01 mm−1 |
b = 8.455 (1) Å | T = 298 K |
c = 17.293 (2) Å | 0.13 × 0.10 × 0.10 mm |
Bruker SMART CCD area-detector diffractometer | 4823 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4073 reflections with I > 2σ(I) |
Tmin = 0.879, Tmax = 0.905 | Rint = 0.057 |
11674 measured reflections |
R[F2 > 2σ(F2)] = 0.065 | H-atom parameters constrained |
wR(F2) = 0.167 | Δρmax = 1.08 e Å−3 |
S = 1.13 | Δρmin = −0.54 e Å−3 |
4823 reflections | Absolute structure: Flack (1983), 1807 Friedel pairs |
326 parameters | Absolute structure parameter: 0.54 (5) |
1 restraint |
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 | 0.47527 (3) | 0.90148 (7) | 0.39948 (4) | 0.0682 (2) | |
C1 | 0.3518 (4) | 1.2960 (8) | 0.3721 (3) | 0.0509 (14) | |
C2 | 0.3877 (5) | 1.3393 (13) | 0.4422 (5) | 0.078 (2) | |
H2 | 0.4239 | 1.2714 | 0.4680 | 0.093* | |
C3 | 0.3678 (5) | 1.4883 (12) | 0.4732 (5) | 0.078 (3) | |
H3 | 0.3912 | 1.5201 | 0.5199 | 0.094* | |
C4 | 0.3152 (6) | 1.5845 (10) | 0.4357 (6) | 0.075 (2) | |
H4 | 0.3035 | 1.6836 | 0.4563 | 0.090* | |
C5 | 0.2785 (6) | 1.5408 (12) | 0.3679 (5) | 0.078 (2) | |
H5 | 0.2411 | 1.6083 | 0.3434 | 0.093* | |
C6 | 0.2974 (5) | 1.3950 (8) | 0.3356 (5) | 0.0589 (16) | |
H6 | 0.2729 | 1.3647 | 0.2892 | 0.071* | |
C7 | 0.3657 (3) | 0.9567 (8) | 0.2569 (3) | 0.0423 (12) | |
C8 | 0.3670 (4) | 0.7515 (7) | 0.1808 (4) | 0.0528 (15) | |
H8 | 0.3584 | 0.6836 | 0.1392 | 0.063* | |
C9 | 0.4113 (4) | 0.7196 (8) | 0.2445 (4) | 0.0541 (15) | |
H9 | 0.4383 | 0.6243 | 0.2542 | 0.065* | |
C10 | 0.2915 (3) | 0.9926 (9) | 0.1299 (3) | 0.0516 (14) | |
H10A | 0.2600 | 0.9216 | 0.0969 | 0.062* | |
H10B | 0.2523 | 1.0625 | 0.1556 | 0.062* | |
C11 | 0.3752 (4) | 1.2323 (9) | 0.0999 (4) | 0.0630 (17) | |
H11 | 0.3593 | 1.2961 | 0.1412 | 0.076* | |
C12 | 0.4303 (5) | 1.2674 (9) | 0.0438 (4) | 0.0623 (17) | |
H12 | 0.4594 | 1.3623 | 0.0405 | 0.075* | |
C13 | 0.3883 (3) | 1.0371 (8) | 0.0180 (3) | 0.0445 (13) | |
C14 | 0.3903 (4) | 0.7183 (8) | −0.1108 (4) | 0.0544 (15) | |
C15 | 0.4215 (5) | 0.7007 (11) | −0.1837 (4) | 0.0690 (19) | |
H15 | 0.4534 | 0.7812 | −0.2053 | 0.083* | |
C16 | 0.4061 (7) | 0.5638 (13) | −0.2260 (6) | 0.088 (3) | |
H16 | 0.4262 | 0.5518 | −0.2760 | 0.106* | |
C17 | 0.3599 (7) | 0.4471 (14) | −0.1909 (7) | 0.093 (3) | |
H17 | 0.3498 | 0.3540 | −0.2179 | 0.112* | |
C18 | 0.3283 (7) | 0.4624 (11) | −0.1177 (6) | 0.090 (3) | |
H18 | 0.2972 | 0.3812 | −0.0957 | 0.108* | |
C19 | 0.3433 (6) | 0.6010 (9) | −0.0767 (5) | 0.070 (2) | |
H19 | 0.3219 | 0.6143 | −0.0271 | 0.084* | |
C20 | 0.5958 (6) | −0.0608 (11) | 0.1501 (5) | 0.075 (2) | |
F1 | 0.5243 (3) | 0.0059 (14) | 0.1521 (6) | 0.152 (4) | |
F2 | 0.5931 (9) | −0.2044 (11) | 0.1290 (6) | 0.199 (6) | |
F3 | 0.6175 (6) | −0.0668 (10) | 0.2239 (4) | 0.131 (3) | |
N1 | 0.3750 (3) | 1.1435 (7) | 0.3445 (3) | 0.0501 (11) | |
N2 | 0.3443 (3) | 1.1075 (6) | 0.2807 (3) | 0.0462 (11) | |
N3 | 0.4113 (3) | 0.8465 (6) | 0.2935 (3) | 0.0484 (11) | |
N4 | 0.3370 (3) | 0.9007 (6) | 0.1878 (3) | 0.0450 (12) | |
N5 | 0.3475 (3) | 1.0842 (6) | 0.0837 (3) | 0.0427 (11) | |
N6 | 0.4379 (4) | 1.1474 (7) | −0.0069 (3) | 0.0520 (12) | |
N7 | 0.3705 (3) | 0.8891 (6) | −0.0124 (3) | 0.0465 (12) | |
N8 | 0.4090 (3) | 0.8640 (7) | −0.0747 (3) | 0.0508 (12) | |
O1 | 0.6671 (6) | 0.1988 (10) | 0.1246 (6) | 0.127 (3) | |
O2 | 0.7448 (5) | −0.0336 (14) | 0.1010 (6) | 0.149 (4) | |
O3 | 0.6378 (5) | 0.0472 (10) | 0.0180 (4) | 0.104 (2) | |
S1 | 0.67017 (10) | 0.0515 (2) | 0.09234 (12) | 0.0592 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ag1 | 0.0678 (3) | 0.0891 (4) | 0.0477 (3) | −0.0057 (2) | −0.0201 (2) | 0.0008 (3) |
C1 | 0.047 (3) | 0.059 (4) | 0.047 (3) | −0.014 (3) | 0.013 (2) | −0.013 (3) |
C2 | 0.053 (4) | 0.117 (7) | 0.064 (5) | −0.010 (4) | 0.000 (3) | −0.016 (5) |
C3 | 0.066 (4) | 0.104 (7) | 0.064 (5) | −0.033 (5) | 0.016 (4) | −0.048 (5) |
C4 | 0.079 (6) | 0.069 (5) | 0.077 (6) | −0.016 (4) | 0.024 (5) | −0.027 (4) |
C5 | 0.082 (5) | 0.077 (5) | 0.074 (5) | 0.002 (4) | 0.024 (4) | −0.006 (4) |
C6 | 0.063 (4) | 0.056 (4) | 0.058 (4) | −0.004 (3) | 0.012 (3) | −0.006 (3) |
C7 | 0.031 (2) | 0.065 (4) | 0.032 (3) | −0.006 (2) | 0.0032 (19) | 0.005 (2) |
C8 | 0.070 (4) | 0.045 (3) | 0.044 (3) | −0.010 (3) | −0.001 (3) | −0.011 (3) |
C9 | 0.059 (4) | 0.044 (3) | 0.059 (4) | −0.001 (3) | 0.001 (3) | 0.002 (3) |
C10 | 0.033 (2) | 0.092 (5) | 0.030 (3) | 0.000 (3) | 0.001 (2) | −0.011 (3) |
C11 | 0.058 (4) | 0.080 (5) | 0.051 (4) | 0.010 (3) | 0.006 (3) | −0.004 (3) |
C12 | 0.071 (4) | 0.058 (4) | 0.058 (4) | −0.002 (3) | 0.007 (3) | 0.006 (3) |
C13 | 0.032 (2) | 0.069 (4) | 0.033 (3) | 0.004 (2) | −0.004 (2) | 0.001 (2) |
C14 | 0.057 (3) | 0.065 (4) | 0.041 (3) | 0.013 (3) | −0.007 (3) | −0.006 (3) |
C15 | 0.069 (4) | 0.081 (5) | 0.056 (4) | 0.019 (4) | 0.005 (3) | −0.015 (4) |
C16 | 0.084 (6) | 0.109 (8) | 0.070 (6) | 0.020 (5) | −0.004 (5) | −0.017 (5) |
C17 | 0.098 (7) | 0.091 (7) | 0.090 (7) | 0.017 (6) | −0.030 (6) | −0.039 (6) |
C18 | 0.117 (7) | 0.063 (5) | 0.090 (8) | −0.007 (5) | 0.000 (6) | −0.005 (5) |
C19 | 0.085 (5) | 0.066 (5) | 0.059 (4) | −0.002 (4) | −0.001 (4) | 0.000 (3) |
C20 | 0.076 (5) | 0.073 (5) | 0.076 (6) | −0.010 (4) | 0.007 (4) | 0.029 (4) |
F1 | 0.051 (3) | 0.237 (9) | 0.169 (8) | −0.006 (4) | 0.022 (3) | 0.111 (8) |
F2 | 0.347 (16) | 0.110 (5) | 0.141 (8) | −0.123 (8) | 0.069 (9) | −0.022 (5) |
F3 | 0.159 (7) | 0.167 (7) | 0.065 (4) | 0.015 (5) | 0.009 (4) | 0.049 (4) |
N1 | 0.050 (3) | 0.064 (3) | 0.037 (2) | −0.006 (2) | −0.001 (2) | −0.002 (2) |
N2 | 0.043 (2) | 0.061 (3) | 0.035 (2) | −0.003 (2) | 0.0013 (19) | −0.003 (2) |
N3 | 0.050 (3) | 0.051 (3) | 0.044 (3) | −0.005 (2) | −0.006 (2) | 0.006 (2) |
N4 | 0.051 (3) | 0.051 (3) | 0.033 (2) | −0.008 (2) | 0.002 (2) | −0.0095 (19) |
N5 | 0.039 (2) | 0.054 (3) | 0.035 (2) | 0.0043 (18) | −0.0010 (19) | 0.001 (2) |
N6 | 0.049 (3) | 0.061 (3) | 0.047 (3) | 0.008 (3) | 0.006 (2) | 0.008 (3) |
N7 | 0.044 (2) | 0.062 (3) | 0.034 (2) | 0.006 (2) | 0.0006 (18) | 0.000 (2) |
N8 | 0.051 (3) | 0.064 (3) | 0.038 (2) | 0.009 (2) | 0.0003 (19) | 0.000 (2) |
O1 | 0.154 (8) | 0.089 (5) | 0.138 (8) | −0.037 (5) | 0.043 (6) | −0.017 (5) |
O2 | 0.076 (4) | 0.222 (9) | 0.148 (8) | 0.060 (6) | 0.018 (5) | 0.058 (8) |
O3 | 0.120 (6) | 0.134 (6) | 0.060 (4) | −0.030 (5) | −0.012 (4) | 0.037 (4) |
S1 | 0.0443 (7) | 0.0712 (10) | 0.0622 (10) | −0.0010 (7) | 0.0022 (7) | 0.0131 (9) |
Ag1—N3 | 2.152 (5) | C11—H11 | 0.9300 |
Ag1—N6i | 2.174 (6) | C12—N6 | 1.347 (10) |
C1—C6 | 1.364 (11) | C12—H12 | 0.9300 |
C1—C2 | 1.390 (10) | C13—N6 | 1.298 (9) |
C1—N1 | 1.424 (9) | C13—N5 | 1.371 (7) |
C2—C3 | 1.406 (14) | C13—N7 | 1.387 (8) |
C2—H2 | 0.9300 | C14—C15 | 1.364 (10) |
C3—C4 | 1.339 (14) | C14—C19 | 1.378 (11) |
C3—H3 | 0.9300 | C14—N8 | 1.413 (8) |
C4—C5 | 1.363 (13) | C15—C16 | 1.391 (13) |
C4—H4 | 0.9300 | C15—H15 | 0.9300 |
C5—C6 | 1.386 (11) | C16—C17 | 1.374 (16) |
C5—H5 | 0.9300 | C16—H16 | 0.9300 |
C6—H6 | 0.9300 | C17—C18 | 1.369 (16) |
C7—N3 | 1.342 (8) | C17—H17 | 0.9300 |
C7—N4 | 1.365 (8) | C18—C19 | 1.390 (12) |
C7—N2 | 1.383 (8) | C18—H18 | 0.9300 |
C8—C9 | 1.338 (10) | C19—H19 | 0.9300 |
C8—N4 | 1.355 (8) | C20—F2 | 1.268 (13) |
C8—H8 | 0.9300 | C20—F1 | 1.278 (11) |
C9—N3 | 1.366 (9) | C20—F3 | 1.322 (11) |
C9—H9 | 0.9300 | C20—S1 | 1.822 (8) |
C10—N5 | 1.429 (8) | N1—N2 | 1.246 (7) |
C10—N4 | 1.463 (9) | N6—Ag1ii | 2.174 (6) |
C10—H10A | 0.9700 | N7—N8 | 1.259 (7) |
C10—H10B | 0.9700 | O1—S1 | 1.365 (9) |
C11—C12 | 1.345 (10) | O2—S1 | 1.404 (7) |
C11—N5 | 1.357 (9) | O3—S1 | 1.388 (7) |
N3—Ag1—N6i | 153.9 (2) | C19—C14—N8 | 123.7 (6) |
C6—C1—C2 | 120.4 (7) | C14—C15—C16 | 120.8 (9) |
C6—C1—N1 | 124.6 (6) | C14—C15—H15 | 119.6 |
C2—C1—N1 | 115.0 (7) | C16—C15—H15 | 119.6 |
C1—C2—C3 | 118.3 (9) | C17—C16—C15 | 117.5 (9) |
C1—C2—H2 | 120.8 | C17—C16—H16 | 121.3 |
C3—C2—H2 | 120.8 | C15—C16—H16 | 121.3 |
C4—C3—C2 | 120.2 (7) | C16—C17—C18 | 122.6 (9) |
C4—C3—H3 | 119.9 | C16—C17—H17 | 118.7 |
C2—C3—H3 | 119.9 | C18—C17—H17 | 118.7 |
C3—C4—C5 | 121.6 (8) | C17—C18—C19 | 119.2 (10) |
C3—C4—H4 | 119.2 | C17—C18—H18 | 120.4 |
C5—C4—H4 | 119.2 | C19—C18—H18 | 120.4 |
C4—C5—C6 | 119.5 (10) | C14—C19—C18 | 118.9 (8) |
C4—C5—H5 | 120.2 | C14—C19—H19 | 120.6 |
C6—C5—H5 | 120.2 | C18—C19—H19 | 120.6 |
C1—C6—C5 | 120.0 (8) | F2—C20—F1 | 113.5 (11) |
C1—C6—H6 | 120.0 | F2—C20—F3 | 104.5 (10) |
C5—C6—H6 | 120.0 | F1—C20—F3 | 103.1 (9) |
N3—C7—N4 | 110.8 (6) | F2—C20—S1 | 111.3 (8) |
N3—C7—N2 | 129.4 (6) | F1—C20—S1 | 111.7 (6) |
N4—C7—N2 | 119.8 (5) | F3—C20—S1 | 112.2 (7) |
C9—C8—N4 | 107.5 (6) | N2—N1—C1 | 114.6 (6) |
C9—C8—H8 | 126.2 | N1—N2—C7 | 113.0 (5) |
N4—C8—H8 | 126.2 | C7—N3—C9 | 104.6 (5) |
C8—C9—N3 | 110.7 (6) | C7—N3—Ag1 | 120.7 (4) |
C8—C9—H9 | 124.7 | C9—N3—Ag1 | 134.2 (4) |
N3—C9—H9 | 124.7 | C8—N4—C7 | 106.4 (6) |
N5—C10—N4 | 110.9 (4) | C8—N4—C10 | 127.6 (5) |
N5—C10—H10A | 109.5 | C7—N4—C10 | 125.6 (5) |
N4—C10—H10A | 109.5 | C11—N5—C13 | 106.4 (5) |
N5—C10—H10B | 109.5 | C11—N5—C10 | 126.1 (5) |
N4—C10—H10B | 109.5 | C13—N5—C10 | 127.3 (5) |
H10A—C10—H10B | 108.0 | C13—N6—C12 | 105.6 (6) |
C12—C11—N5 | 105.6 (6) | C13—N6—Ag1ii | 120.2 (5) |
C12—C11—H11 | 127.2 | C12—N6—Ag1ii | 133.3 (5) |
N5—C11—H11 | 127.2 | N8—N7—C13 | 112.0 (5) |
C11—C12—N6 | 111.3 (7) | N7—N8—C14 | 114.9 (6) |
C11—C12—H12 | 124.4 | O1—S1—O3 | 112.9 (6) |
N6—C12—H12 | 124.4 | O1—S1—O2 | 117.1 (7) |
N6—C13—N5 | 111.0 (6) | O3—S1—O2 | 113.8 (6) |
N6—C13—N7 | 130.4 (6) | O1—S1—C20 | 103.1 (5) |
N5—C13—N7 | 118.5 (5) | O3—S1—C20 | 104.5 (5) |
C15—C14—C19 | 121.1 (7) | O2—S1—C20 | 103.4 (5) |
C15—C14—N8 | 115.2 (7) | ||
C6—C1—C2—C3 | −1.4 (11) | N2—C7—N4—C8 | −179.3 (5) |
N1—C1—C2—C3 | 179.9 (6) | N3—C7—N4—C10 | −174.5 (5) |
C1—C2—C3—C4 | 0.3 (12) | N2—C7—N4—C10 | 7.2 (8) |
C2—C3—C4—C5 | 1.3 (12) | N5—C10—N4—C8 | −91.0 (8) |
C3—C4—C5—C6 | −1.7 (12) | N5—C10—N4—C7 | 81.0 (7) |
C2—C1—C6—C5 | 1.0 (10) | C12—C11—N5—C13 | 0.3 (7) |
N1—C1—C6—C5 | 179.5 (6) | C12—C11—N5—C10 | 176.1 (6) |
C4—C5—C6—C1 | 0.6 (11) | N6—C13—N5—C11 | −0.8 (7) |
N4—C8—C9—N3 | −0.3 (8) | N7—C13—N5—C11 | −179.1 (5) |
N5—C11—C12—N6 | 0.2 (9) | N6—C13—N5—C10 | −176.5 (5) |
C19—C14—C15—C16 | 0.5 (12) | N7—C13—N5—C10 | 5.2 (9) |
N8—C14—C15—C16 | −178.8 (7) | N4—C10—N5—C11 | −88.1 (7) |
C14—C15—C16—C17 | −1.2 (13) | N4—C10—N5—C13 | 86.8 (7) |
C15—C16—C17—C18 | 1.1 (15) | N5—C13—N6—C12 | 0.9 (7) |
C16—C17—C18—C19 | −0.1 (16) | N7—C13—N6—C12 | 178.9 (6) |
C15—C14—C19—C18 | 0.5 (12) | N5—C13—N6—Ag1ii | 171.3 (4) |
N8—C14—C19—C18 | 179.7 (8) | N7—C13—N6—Ag1ii | −10.6 (9) |
C17—C18—C19—C14 | −0.6 (14) | C11—C12—N6—C13 | −0.7 (8) |
C6—C1—N1—N2 | 3.2 (9) | C11—C12—N6—Ag1ii | −169.3 (5) |
C2—C1—N1—N2 | −178.2 (6) | N6—C13—N7—N8 | −1.3 (9) |
C1—N1—N2—C7 | −177.8 (5) | N5—C13—N7—N8 | 176.7 (5) |
N3—C7—N2—N1 | 2.4 (8) | C13—N7—N8—C14 | −176.8 (5) |
N4—C7—N2—N1 | −179.7 (5) | C15—C14—N8—N7 | 170.3 (6) |
N4—C7—N3—C9 | 0.8 (6) | C19—C14—N8—N7 | −9.0 (9) |
N2—C7—N3—C9 | 178.9 (6) | F2—C20—S1—O1 | −177.9 (10) |
N4—C7—N3—Ag1 | 174.6 (4) | F1—C20—S1—O1 | 54.1 (10) |
N2—C7—N3—Ag1 | −7.3 (8) | F3—C20—S1—O1 | −61.1 (9) |
C8—C9—N3—C7 | −0.3 (7) | F2—C20—S1—O3 | 63.9 (10) |
C8—C9—N3—Ag1 | −172.8 (5) | F1—C20—S1—O3 | −64.1 (10) |
N6i—Ag1—N3—C7 | −170.1 (5) | F3—C20—S1—O3 | −179.4 (8) |
N6i—Ag1—N3—C9 | 1.5 (9) | F2—C20—S1—O2 | −55.5 (11) |
C9—C8—N4—C7 | 0.8 (7) | F1—C20—S1—O2 | 176.5 (10) |
C9—C8—N4—C10 | 174.1 (6) | F3—C20—S1—O2 | 61.3 (10) |
N3—C7—N4—C8 | −1.0 (7) |
Symmetry codes: (i) −x+1, −y+2, z+1/2; (ii) −x+1, −y+2, z−1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10B···O1iii | 0.97 | 2.50 | 3.285 (10) | 138 |
C8—H8···O2iv | 0.93 | 2.31 | 3.021 (10) | 133 |
Symmetry codes: (iii) x−1/2, −y+3/2, z; (iv) x−1/2, −y+1/2, z. |
Experimental details
Crystal data | |
Chemical formula | [Ag(C19H16N8)](CF3SO3) |
Mr | 613.34 |
Crystal system, space group | Orthorhombic, Pna21 |
Temperature (K) | 298 |
a, b, c (Å) | 16.0251 (19), 8.455 (1), 17.293 (2) |
V (Å3) | 2343.0 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.01 |
Crystal size (mm) | 0.13 × 0.10 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.879, 0.905 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11674, 4823, 4073 |
Rint | 0.057 |
(sin θ/λ)max (Å−1) | 0.668 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.065, 0.167, 1.13 |
No. of reflections | 4823 |
No. of parameters | 326 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.08, −0.54 |
Absolute structure | Flack (1983), 1807 Friedel pairs |
Absolute structure parameter | 0.54 (5) |
Computer programs: SMART (Bruker, 2001), SAINT-Plus (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10B···O1ii | 0.97 | 2.50 | 3.285 (10) | 138.4 |
C8—H8···O2iii | 0.93 | 2.31 | 3.021 (10) | 132.5 |
Symmetry codes: (ii) x−1/2, −y+3/2, z; (iii) x−1/2, −y+1/2, z. |
Acknowledgements
We gratefully acknowledge financial support by the Natural Science Foundation of Hubei Province, People's Republic of China (2009CDB349) and the Science Foundation of Hubei Provincial Department of Education (Z201022001).
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
The construction of functional metal-organic frameworks is of great interest due to their intriguing network topologies and their potential applications as microporous, magnetic or catalytically active species or in the fields of nonlinear optics, molecular separation, toxic materials adsorption and molecular sensors etc. (Batten & Robson, 1998; Burrows, 2011; Leininger et al., 2000; Tanabe & Cohen, 2011). Such molecular architectures have been successfully designed and synthesized by judicious combination of a metal 'node' and an organic ligands as 'spacer'. The roles of counter anions and different solvent molecules are also of significant effect on supramolecular self-assembly. More recently, the molecular geometry and flexibility of multidentate N-donor spacer ligands play key roles in the field of molecular materials and supramolecular self-assemble crystal engineering. For example, 4, 4'-bipyridine, 1, 2-bis(4-pyridyl)ethane and trans-bis(4-pyridyl)ethene as ligands can form a lot of coordination polymers with different structural features (Custelcean, 2010; Pschirer et al., 2002). The coordination polymer frameworks which were built by methylene C-bridged bipyridine, bitriazole and bisimidazole ligands have also been described widely (Hamilton & Ziegler, 2004; Jin et al., 2009). Bis[2-((E)-phenyldiazenyl)-1H-imidazol-1-yl- methane (2-paBIM) is a flexibie V-shaped N-donor ligand containing azo groups which is built up by two methylene C-bridged substituted imidazole rings. The title compound, [Ag(2-paBIM)SO3CF3]n, (I), with a one-dimensional zigzag cationic chain structural motif was formed by the addition of a solution of 2-paBIM to AgSO3CF3.
Single crystal X-ray diffraction analysis reveals that complex (I) consists of one-dimensional cationic polymeric chains and uncoordinated CF3SO3-. The Ag+ ions are coordinated by two imidazolyl unsubstituted nitrogen atoms of independent 2-paBIM ligands, which act as bridges between silver(I) centers (Fig.1). The Ag+ ions show a coordination mode that is bent out of linearity with the bond angles of N—Ag—N being 153.9 (2)°. Ag—N bond lengths are 2.157 (5) Å and 2.170 (6) Å, respectively. Adjacent Ag······Ag distances in the same cationic chain are 8.841 (2) Å and the dihedral angle of the two 2-phenyldiazenyl-imidazole planes in the same ligand is 74.7 (3)°. Non-coordinated CF3SO3- anions are filled in the voids of each zigzag cationic chain and show through the weak C—H······O hydrogen-bond interactions (Table 1).