metal-organic compounds
catena-Poly[[diazidomanganese(II)]bis[μ-1-(4-pyridylmethyl)-1H-benzimidazole]]
aZhengzhou University of Light Industry, Henan Provincial Key Laboratory of Surface and Interface Science, Henan, Zhengzhou 450002, People's Republic of China, and bDepartment of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
*Correspondence e-mail: chunsenliu@mail.nankai.edu.cn
In the title polymeric compound, [Mn(N3)2(C13H11N3)2]n, each MnII centre is six-coordinated in an octahedral geometry by six N atoms from four 1-(4-pyridylmethyl)-1H-benzimidazole (L) ligands and two azide anions (N3−). Each of the MnII ions lies on an inversion centre. The L ligands and N3− anions bridge adjacent MnII centres, generating a polymeric chain running along the [110] direction. Adjacent polymeric chains are arranged in a two-dimensional network parallel to the (001) plane, linked by C—H⋯N hydrogen bonds.
Related literature
For related literature, see: Chang et al. (2005); Desiraju & Steiner (1999); Fan et al. (2006); Huang et al. (2006); Kitagawa et al. (2004); Li et al. (2007); Meng et al. (2004); Steel (2005); Su et al. (2001); Xiao 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 and PLATON (Spek, 2003).
Supporting information
https://doi.org/10.1107/S1600536807062435/ci2519sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807062435/ci2519Isup2.hkl
The ligand 1-(pyridin-4-ylmethyl)-1H-benzo[d]imidazole (L) was synthesized according to a method reported in the literature (Li et al., 2007). The reaction of L (58 mg, 0.2 mmol), NaN3 (13 mg, 0.2 mmol) with Mn(ClO4)2 (25 mg, 0.1 mmol) in a mixed solution of methanol and aqua (v/v = 1:1, 10 ml) for a few minutes afforded a yellow solid, which was then filtered. The resulting solution was kept at room temperature. Yellow single crystals of compound (I) suitable for X-ray analysis were obtained by slow evaporation of the solvent after several days (yield: 40%). Analysis calculated for C26H22MnN12: C 56.02, H 3.98, N 30.15%; found: C 55.88, H 3.79, N 30.37%.
H atoms were included in calculated positions and treated in the subsequent
as riding atoms, with C—H = 0.93 Å and Uiso(H) = 1.2Ueq(C).N-containing heterocyclic aromatic compounds are extensively used as bridging ligands in coordination and metallosupramolecular chemistry (Steel, 2005). The most frequently used neutral bridging ligands are 4,4'-bipyridine and its derivatives (Kitagawa et al., 2004). In recent years, however, the benzimidazole groups also were used to link different alkyl or aromatic groups to form a series of bi- and multi-dentate flexible ligands, which can adopt different conformations according to the different geometric requirements of metal centers when forming metal complexes (Li et al., 2007). Many complexes with these ligands show unique structural topologies and interesting properties (Meng et al., 2004), such as three-dimensional and two-dimensional networks (Chang et al., 2005; Fan et al., 2006; Su et al., 2001) and one-dimensional helical chains (Xiao et al., 2004). Recently, we found that Liu and co-workers synthesized a flexible bridging ligand 1-(pyridin-4-ylmethyl)-1H-benzo[d]imidazole (L) as well as its chiral one-dimensional double helix polymer, [Ag(L)(NO3)]n (Huang et al., 2006). As such, we also used L as a µ2-bridging ligand to react with MnII salt, meanwhile together with azido anion as a co-ligand, to obtain a one-dimensional manganese coordination polymer [Mn(C13H11N3)2(N3)2] n (I). We report here the
of (I).The title compound (I) consists of linear polymeric coordination chains containing only one kind of MnII coordination environment (Fig. 1). The
of (I) is composed of one MnII ion which lies on an inversion centre, one L ligand and one N3- anion (L is 1-(pyridin-4-ylmethyl)-1H-benzo[d]imidazole). The geometry around each MnII ion can be best described as a ideal octahedron (Fig. 1). The MnII center is six-coordinated by six N atoms from four different L ligands and two N3- anions, respectively (Table 1). In the of (I), L adopts µ2-bridging 4,4'-bipyridine-like coordination mode and N3- serves as a mono-terminal coordination mode [Mn1—N4: 2.2049 (13) Å], which together link the adjacent MnII ions into a linear chain along the [1 1 0] direction, with the shortest intrachain non-bonding Mn···Mn separation being 9.725 (2) Å (Fig. 2).In the
of (I), the adjacent one-dimensional chains [Mn(C13H11N3)2(N3)2]n are arranged into a two-dimensional network parallel to the (0 0 1) plane by interchain C–H···N hydrogen bonding interactions between the coordinated L ligands and N atoms of azido anions (see Fig. 3 and Table 2) (Desiraju et al., 1999).For related literature, see: Chang et al. (2005); Desiraju & Steiner (1999); Fan et al. (2006); Huang et al. (2006); Kitagawa et al. (2004); Li et al. (2007); Meng et al. (2004); Steel (2005); Su et al. (2001); Xiao et al. (2004).
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 and PLATON (Spek, 2003).Fig. 1. The molecular structure of (I), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. The atoms labelled with the suffixes A, B and C are generated by the symmetry operations (1 + x, -1 + y, z), (1 - x, 1 - y, 2 - z) and (2 - x, -y, 2 - z), respectively. | |
Fig. 2. View of a polymeric chain running along the [1 1 0]. | |
Fig. 3. Part of the crystal packing showing the two-dimensional network in the title compound formed by interchain C—H···N hydrogen-bonded interactions (fine dashed lines). For the sake of clarity, only H atoms involved in the interactions are shown. |
[Mn(N3)2(C13H11N3)2] | Z = 1 |
Mr = 557.50 | F(000) = 287 |
Triclinic, P1 | Dx = 1.422 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.4135 (17) Å | Cell parameters from 6008 reflections |
b = 8.5823 (17) Å | θ = 3.2–27.5° |
c = 10.399 (2) Å | µ = 0.55 mm−1 |
α = 67.86 (3)° | T = 294 K |
β = 86.03 (3)° | Block, yellow |
γ = 69.80 (3)° | 0.36 × 0.32 × 0.30 mm |
V = 651.1 (3) Å3 |
Bruker SMART CCD area-detector diffractometer | 2954 independent reflections |
Radiation source: fine-focus sealed tube | 2828 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.019 |
φ and ω scans | θmax = 27.5°, θmin = 3.2° |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | h = −10→10 |
Tmin = 0.827, Tmax = 0.853 | k = −11→11 |
6780 measured reflections | l = −13→13 |
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)] = 0.029 | H-atom parameters constrained |
wR(F2) = 0.081 | w = 1/[σ2(Fo2) + (0.0415P)2 + 0.2403P] where P = (Fo2 + 2Fc2)/3 |
S = 1.03 | (Δ/σ)max = 0.003 |
2954 reflections | Δρmax = 0.31 e Å−3 |
179 parameters | Δρmin = −0.23 e Å−3 |
0 restraints | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.188 (10) |
[Mn(N3)2(C13H11N3)2] | γ = 69.80 (3)° |
Mr = 557.50 | V = 651.1 (3) Å3 |
Triclinic, P1 | Z = 1 |
a = 8.4135 (17) Å | Mo Kα radiation |
b = 8.5823 (17) Å | µ = 0.55 mm−1 |
c = 10.399 (2) Å | T = 294 K |
α = 67.86 (3)° | 0.36 × 0.32 × 0.30 mm |
β = 86.03 (3)° |
Bruker SMART CCD area-detector diffractometer | 2954 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1998) | 2828 reflections with I > 2σ(I) |
Tmin = 0.827, Tmax = 0.853 | Rint = 0.019 |
6780 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | 0 restraints |
wR(F2) = 0.081 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.31 e Å−3 |
2954 reflections | Δρmin = −0.23 e Å−3 |
179 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 | ||
Mn1 | 1.0000 | 0.0000 | 1.0000 | 0.02268 (12) | |
C1 | 0.13527 (18) | 0.75738 (18) | 0.81818 (14) | 0.0299 (3) | |
H1 | 0.1225 | 0.6635 | 0.8954 | 0.036* | |
C2 | 0.13205 (16) | 1.01940 (17) | 0.68138 (13) | 0.0259 (3) | |
C3 | 0.19824 (16) | 0.90468 (18) | 0.60918 (14) | 0.0281 (3) | |
C4 | 0.2474 (2) | 0.9643 (2) | 0.47385 (16) | 0.0421 (4) | |
H4 | 0.2914 | 0.8870 | 0.4269 | 0.050* | |
C5 | 0.2277 (3) | 1.1436 (3) | 0.41276 (17) | 0.0511 (4) | |
H5 | 0.2594 | 1.1883 | 0.3224 | 0.061* | |
C6 | 0.1610 (2) | 1.2603 (2) | 0.48348 (17) | 0.0463 (4) | |
H6 | 0.1498 | 1.3804 | 0.4390 | 0.056* | |
C7 | 0.1116 (2) | 1.20089 (19) | 0.61774 (16) | 0.0351 (3) | |
H7 | 0.0665 | 1.2789 | 0.6639 | 0.042* | |
C8 | 0.25306 (18) | 0.57026 (19) | 0.67617 (16) | 0.0332 (3) | |
H8A | 0.2516 | 0.5976 | 0.5768 | 0.040* | |
H8B | 0.1726 | 0.5091 | 0.7140 | 0.040* | |
C9 | 0.47260 (18) | 0.26337 (19) | 0.77339 (17) | 0.0351 (3) | |
H9 | 0.3960 | 0.2185 | 0.7525 | 0.042* | |
C10 | 0.63090 (19) | 0.14894 (19) | 0.83664 (17) | 0.0365 (3) | |
H10 | 0.6578 | 0.0269 | 0.8580 | 0.044* | |
C11 | 0.70528 (19) | 0.3804 (2) | 0.83490 (19) | 0.0392 (4) | |
H11 | 0.7856 | 0.4224 | 0.8536 | 0.047* | |
C12 | 0.5485 (2) | 0.5042 (2) | 0.77332 (19) | 0.0401 (4) | |
H12 | 0.5243 | 0.6254 | 0.7538 | 0.048* | |
C13 | 0.42862 (16) | 0.44572 (18) | 0.74119 (14) | 0.0265 (3) | |
N1 | 0.09396 (15) | 0.92194 (15) | 0.81364 (12) | 0.0285 (2) | |
N2 | 0.19812 (14) | 0.73794 (15) | 0.69955 (12) | 0.0278 (2) | |
N3 | 0.74795 (14) | 0.20399 (15) | 0.86900 (12) | 0.0297 (3) | |
N4 | 1.10239 (16) | 0.22079 (17) | 0.92696 (13) | 0.0341 (3) | |
N5 | 1.16197 (15) | 0.28050 (15) | 0.98900 (12) | 0.0298 (3) | |
N6 | 1.2213 (2) | 0.3409 (2) | 1.04762 (16) | 0.0492 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mn1 | 0.02229 (16) | 0.02034 (16) | 0.02660 (17) | −0.00730 (11) | 0.00254 (10) | −0.01032 (11) |
C1 | 0.0331 (7) | 0.0231 (6) | 0.0295 (6) | −0.0071 (5) | 0.0051 (5) | −0.0086 (5) |
C2 | 0.0241 (6) | 0.0249 (6) | 0.0252 (6) | −0.0061 (5) | −0.0014 (5) | −0.0072 (5) |
C3 | 0.0234 (6) | 0.0291 (6) | 0.0277 (6) | −0.0055 (5) | −0.0001 (5) | −0.0092 (5) |
C4 | 0.0469 (9) | 0.0503 (9) | 0.0304 (7) | −0.0167 (7) | 0.0093 (6) | −0.0178 (7) |
C5 | 0.0629 (11) | 0.0599 (11) | 0.0269 (7) | −0.0293 (9) | 0.0070 (7) | −0.0057 (7) |
C6 | 0.0581 (10) | 0.0373 (8) | 0.0355 (8) | −0.0227 (8) | −0.0042 (7) | 0.0016 (7) |
C7 | 0.0401 (8) | 0.0274 (7) | 0.0345 (7) | −0.0111 (6) | −0.0048 (6) | −0.0072 (6) |
C8 | 0.0279 (7) | 0.0288 (7) | 0.0421 (8) | −0.0001 (5) | −0.0058 (6) | −0.0201 (6) |
C9 | 0.0287 (7) | 0.0283 (7) | 0.0514 (9) | −0.0073 (6) | −0.0056 (6) | −0.0194 (6) |
C10 | 0.0334 (7) | 0.0244 (7) | 0.0511 (9) | −0.0042 (6) | −0.0073 (6) | −0.0170 (6) |
C11 | 0.0303 (7) | 0.0292 (7) | 0.0585 (10) | −0.0097 (6) | −0.0075 (6) | −0.0157 (7) |
C12 | 0.0338 (7) | 0.0234 (7) | 0.0604 (10) | −0.0065 (6) | −0.0077 (7) | −0.0141 (7) |
C13 | 0.0236 (6) | 0.0257 (6) | 0.0293 (6) | −0.0038 (5) | 0.0018 (5) | −0.0137 (5) |
N1 | 0.0325 (6) | 0.0226 (5) | 0.0280 (6) | −0.0073 (4) | 0.0047 (4) | −0.0094 (4) |
N2 | 0.0262 (5) | 0.0230 (5) | 0.0309 (6) | −0.0025 (4) | 0.0012 (4) | −0.0118 (4) |
N3 | 0.0261 (5) | 0.0259 (6) | 0.0364 (6) | −0.0055 (4) | −0.0008 (4) | −0.0137 (5) |
N4 | 0.0392 (7) | 0.0336 (6) | 0.0365 (6) | −0.0207 (5) | 0.0047 (5) | −0.0135 (5) |
N5 | 0.0356 (6) | 0.0219 (5) | 0.0304 (6) | −0.0125 (5) | 0.0040 (5) | −0.0062 (5) |
N6 | 0.0717 (10) | 0.0397 (7) | 0.0456 (8) | −0.0301 (7) | −0.0050 (7) | −0.0148 (6) |
Mn1—N4 | 2.2049 (13) | C6—H6 | 0.93 |
Mn1—N4i | 2.2049 (13) | C7—H7 | 0.93 |
Mn1—N1ii | 2.2869 (12) | C8—N2 | 1.4603 (17) |
Mn1—N1iii | 2.2869 (12) | C8—C13 | 1.5115 (19) |
Mn1—N3i | 2.3358 (16) | C8—H8A | 0.97 |
Mn1—N3 | 2.3358 (16) | C8—H8B | 0.97 |
C1—N1 | 1.3156 (18) | C9—C10 | 1.379 (2) |
C1—N2 | 1.3540 (18) | C9—C13 | 1.3858 (19) |
C1—H1 | 0.93 | C9—H9 | 0.93 |
C2—C7 | 1.395 (2) | C10—N3 | 1.3392 (19) |
C2—N1 | 1.3968 (18) | C10—H10 | 0.93 |
C2—C3 | 1.4014 (19) | C11—N3 | 1.3354 (19) |
C3—N2 | 1.3849 (19) | C11—C12 | 1.384 (2) |
C3—C4 | 1.391 (2) | C11—H11 | 0.93 |
C4—C5 | 1.379 (3) | C12—C13 | 1.380 (2) |
C4—H4 | 0.93 | C12—H12 | 0.93 |
C5—C6 | 1.403 (3) | N1—Mn1iv | 2.2869 (12) |
C5—H5 | 0.93 | N4—N5 | 1.1838 (17) |
C6—C7 | 1.383 (2) | N5—N6 | 1.1612 (18) |
N4—Mn1—N4i | 180 | C6—C7—H7 | 121.3 |
N4—Mn1—N1ii | 88.32 (5) | C2—C7—H7 | 121.3 |
N4i—Mn1—N1ii | 91.68 (5) | N2—C8—C13 | 113.50 (11) |
N4—Mn1—N1iii | 91.68 (5) | N2—C8—H8A | 108.9 |
N4i—Mn1—N1iii | 88.32 (5) | C13—C8—H8A | 108.9 |
N1ii—Mn1—N1iii | 180 | N2—C8—H8B | 108.9 |
N4—Mn1—N3i | 92.39 (5) | C13—C8—H8B | 108.9 |
N4i—Mn1—N3i | 87.61 (5) | H8A—C8—H8B | 107.7 |
N1ii—Mn1—N3i | 89.63 (5) | C10—C9—C13 | 119.48 (13) |
N1iii—Mn1—N3i | 90.37 (5) | C10—C9—H9 | 120.3 |
N4—Mn1—N3 | 87.61 (5) | C13—C9—H9 | 120.3 |
N4i—Mn1—N3 | 92.39 (5) | N3—C10—C9 | 123.55 (13) |
N1ii—Mn1—N3 | 90.37 (5) | N3—C10—H10 | 118.2 |
N1iii—Mn1—N3 | 89.63 (5) | C9—C10—H10 | 118.2 |
N3i—Mn1—N3 | 180 | N3—C11—C12 | 123.86 (14) |
N1—C1—N2 | 113.45 (12) | N3—C11—H11 | 118.1 |
N1—C1—H1 | 123.3 | C12—C11—H11 | 118.1 |
N2—C1—H1 | 123.3 | C13—C12—C11 | 119.19 (14) |
C7—C2—N1 | 130.51 (13) | C13—C12—H12 | 120.4 |
C7—C2—C3 | 120.29 (13) | C11—C12—H12 | 120.4 |
N1—C2—C3 | 109.19 (12) | C12—C13—C9 | 117.52 (13) |
N2—C3—C4 | 132.11 (14) | C12—C13—C8 | 123.05 (12) |
N2—C3—C2 | 105.56 (11) | C9—C13—C8 | 119.42 (13) |
C4—C3—C2 | 122.33 (14) | C1—N1—C2 | 105.01 (11) |
C5—C4—C3 | 116.72 (15) | C1—N1—Mn1iv | 123.01 (10) |
C5—C4—H4 | 121.6 | C2—N1—Mn1iv | 131.84 (9) |
C3—C4—H4 | 121.6 | C1—N2—C3 | 106.79 (11) |
C4—C5—C6 | 121.63 (15) | C1—N2—C8 | 124.89 (12) |
C4—C5—H5 | 119.2 | C3—N2—C8 | 128.32 (12) |
C6—C5—H5 | 119.2 | C11—N3—C10 | 116.38 (12) |
C7—C6—C5 | 121.56 (16) | C11—N3—Mn1 | 121.80 (10) |
C7—C6—H6 | 119.2 | C10—N3—Mn1 | 121.47 (9) |
C5—C6—H6 | 119.2 | N5—N4—Mn1 | 131.21 (10) |
C6—C7—C2 | 117.48 (15) | N6—N5—N4 | 178.77 (15) |
C7—C2—C3—N2 | −178.72 (12) | N1—C1—N2—C3 | 0.08 (16) |
N1—C2—C3—N2 | 0.39 (15) | N1—C1—N2—C8 | −179.71 (12) |
C7—C2—C3—C4 | 0.6 (2) | C4—C3—N2—C1 | −179.55 (16) |
N1—C2—C3—C4 | 179.75 (13) | C2—C3—N2—C1 | −0.29 (14) |
N2—C3—C4—C5 | 179.05 (15) | C4—C3—N2—C8 | 0.2 (2) |
C2—C3—C4—C5 | −0.1 (2) | C2—C3—N2—C8 | 179.50 (12) |
C3—C4—C5—C6 | −0.1 (3) | C13—C8—N2—C1 | −79.95 (18) |
C4—C5—C6—C7 | −0.1 (3) | C13—C8—N2—C3 | 100.30 (16) |
C5—C6—C7—C2 | 0.6 (3) | C12—C11—N3—C10 | 2.0 (2) |
N1—C2—C7—C6 | −179.76 (15) | C12—C11—N3—Mn1 | −171.37 (14) |
C3—C2—C7—C6 | −0.9 (2) | C9—C10—N3—C11 | −0.9 (2) |
C13—C9—C10—N3 | −0.4 (3) | C9—C10—N3—Mn1 | 172.44 (12) |
N3—C11—C12—C13 | −1.7 (3) | N4—Mn1—N3—C11 | −23.66 (13) |
C11—C12—C13—C9 | 0.2 (2) | N4i—Mn1—N3—C11 | 156.34 (13) |
C11—C12—C13—C8 | 178.92 (15) | N1ii—Mn1—N3—C11 | 64.64 (13) |
C10—C9—C13—C12 | 0.7 (2) | N1iii—Mn1—N3—C11 | −115.36 (13) |
C10—C9—C13—C8 | −178.01 (14) | N4—Mn1—N3—C10 | 163.34 (12) |
N2—C8—C13—C12 | −22.6 (2) | N4i—Mn1—N3—C10 | −16.66 (12) |
N2—C8—C13—C9 | 156.11 (14) | N1ii—Mn1—N3—C10 | −108.36 (12) |
N2—C1—N1—C2 | 0.17 (16) | N1iii—Mn1—N3—C10 | 71.64 (12) |
N2—C1—N1—Mn1iv | −175.95 (9) | N1ii—Mn1—N4—N5 | 33.89 (14) |
C7—C2—N1—C1 | 178.65 (14) | N1iii—Mn1—N4—N5 | −146.11 (14) |
C3—C2—N1—C1 | −0.35 (15) | N3i—Mn1—N4—N5 | −55.67 (14) |
C7—C2—N1—Mn1iv | −5.7 (2) | N3—Mn1—N4—N5 | 124.33 (14) |
C3—C2—N1—Mn1iv | 175.28 (9) |
Symmetry codes: (i) −x+2, −y, −z+2; (ii) −x+1, −y+1, −z+2; (iii) x+1, y−1, z; (iv) x−1, y+1, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···N6v | 0.93 | 2.48 | 3.319 (1) | 150 |
C11—H11···N6vi | 0.93 | 2.58 | 3.305 (2) | 135 |
Symmetry codes: (v) x−1, y, z; (vi) −x+2, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [Mn(N3)2(C13H11N3)2] |
Mr | 557.50 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 294 |
a, b, c (Å) | 8.4135 (17), 8.5823 (17), 10.399 (2) |
α, β, γ (°) | 67.86 (3), 86.03 (3), 69.80 (3) |
V (Å3) | 651.1 (3) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.55 |
Crystal size (mm) | 0.36 × 0.32 × 0.30 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 1998) |
Tmin, Tmax | 0.827, 0.853 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6780, 2954, 2828 |
Rint | 0.019 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.081, 1.03 |
No. of reflections | 2954 |
No. of parameters | 179 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.31, −0.23 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SAINT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 1998), SHELXTL and PLATON (Spek, 2003).
Mn1—N4 | 2.2049 (13) | Mn1—N1ii | 2.2869 (12) |
Mn1—N1i | 2.2869 (12) | Mn1—N3 | 2.3358 (16) |
N4—Mn1—N4iii | 180 | N1i—Mn1—N3iii | 89.63 (5) |
N4—Mn1—N1i | 88.32 (5) | N1ii—Mn1—N3iii | 90.37 (5) |
N4iii—Mn1—N1i | 91.68 (5) | N4—Mn1—N3 | 87.61 (5) |
N4—Mn1—N1ii | 91.68 (5) | N4iii—Mn1—N3 | 92.39 (5) |
N4iii—Mn1—N1ii | 88.32 (5) | N1i—Mn1—N3 | 90.37 (5) |
N1i—Mn1—N1ii | 180 | N1ii—Mn1—N3 | 89.63 (5) |
N4—Mn1—N3iii | 92.39 (5) | N3iii—Mn1—N3 | 180 |
N4iii—Mn1—N3iii | 87.61 (5) |
Symmetry codes: (i) −x+1, −y+1, −z+2; (ii) x+1, y−1, z; (iii) −x+2, −y, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···N6iv | 0.93 | 2.48 | 3.319 (1) | 150 |
C11—H11···N6v | 0.93 | 2.58 | 3.305 (2) | 135 |
Symmetry codes: (iv) x−1, y, z; (v) −x+2, −y+1, −z+2. |
Acknowledgements
This work was supported by the Startup Fund for PhDs of Natural Scientific Research of Zhengzhou University of Light Industry (No. 2008 to C-SL). The authors also gratefully thank Nankai University and Henan Provincial Key Laboratory of Surface and Interface Science for supporting this research.
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N-containing heterocyclic aromatic compounds are extensively used as bridging ligands in coordination and metallosupramolecular chemistry (Steel, 2005). The most frequently used neutral bridging ligands are 4,4'-bipyridine and its derivatives (Kitagawa et al., 2004). In recent years, however, the benzimidazole groups also were used to link different alkyl or aromatic groups to form a series of bi- and multi-dentate flexible ligands, which can adopt different conformations according to the different geometric requirements of metal centers when forming metal complexes (Li et al., 2007). Many complexes with these ligands show unique structural topologies and interesting properties (Meng et al., 2004), such as three-dimensional and two-dimensional networks (Chang et al., 2005; Fan et al., 2006; Su et al., 2001) and one-dimensional helical chains (Xiao et al., 2004). Recently, we found that Liu and co-workers synthesized a flexible bridging ligand 1-(pyridin-4-ylmethyl)-1H-benzo[d]imidazole (L) as well as its chiral one-dimensional double helix polymer, [Ag(L)(NO3)]n (Huang et al., 2006). As such, we also used L as a µ2-bridging ligand to react with MnII salt, meanwhile together with azido anion as a co-ligand, to obtain a one-dimensional manganese coordination polymer [Mn(C13H11N3)2(N3)2] n (I). We report here the crystal structure of (I).
The title compound (I) consists of linear polymeric coordination chains containing only one kind of MnII coordination environment (Fig. 1). The asymmetric unit of (I) is composed of one MnII ion which lies on an inversion centre, one L ligand and one N3- anion (L is 1-(pyridin-4-ylmethyl)-1H-benzo[d]imidazole). The geometry around each MnII ion can be best described as a ideal octahedron (Fig. 1). The MnII center is six-coordinated by six N atoms from four different L ligands and two N3- anions, respectively (Table 1). In the crystal structure of (I), L adopts µ2-bridging 4,4'-bipyridine-like coordination mode and N3- serves as a mono-terminal coordination mode [Mn1—N4: 2.2049 (13) Å], which together link the adjacent MnII ions into a linear chain along the [1 1 0] direction, with the shortest intrachain non-bonding Mn···Mn separation being 9.725 (2) Å (Fig. 2).
In the crystal structure of (I), the adjacent one-dimensional chains [Mn(C13H11N3)2(N3)2]n are arranged into a two-dimensional network parallel to the (0 0 1) plane by interchain C–H···N hydrogen bonding interactions between the coordinated L ligands and N atoms of azido anions (see Fig. 3 and Table 2) (Desiraju et al., 1999).