metal-organic compounds
2-(2-Pyridyl)pyridinium (2,2′-bipyridine-κ2N,N′)tetrakis(nitrato-κ2O,O′)bismuthate(III)
aCollege of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang 473061, People's Republic of China
*Correspondence e-mail: nysymzh@126.com
The structure of the title compound, (C10H9N2)[Bi(NO3)4(C10H8N2)], consists of 2-(2-pyridyl)pyridinium cations and anions [Bi(NO3)4(C10H8N2)]−. The Bi3+ ion lies on the twofold axis. It is coordinated by two nitrogen atoms from one 2,2′-bipyridine ligand and eight oxygen atoms from four NO3− anions. The disordered cation is positioned at the inversion centre. The [Bi(NO3)4(C10H8N2)]− anions and 2-(2-pyridyl)pyridinium cations are connected via N—H⋯O hydrogen bonds into chains. Moreover, these chains are further linked into a two-dimensional layered structure through π–π stacking interactions between bipyridine ligands along the c axis [centroid–centroid distance = 2.868 (4) Å].
Related literature
For potential applications of bismuth(III) coordination compounds in medical chemistry, see: Sun & Szeto (2003); Sun et al. (2004). For reported bismuth(III) coordination compounds, see: Andrews et al. (2006); Boitrel et al. (2003); Marsh (2002); Wullens et al. (1998); Yang et al. (2006, 2007). For the structure of disordered protonated 2,2′-bipyridine, see: Bowmaker et al. (1998). For the bond-strength calculations, see: Brown & Altermatt (1985); Brese & O'Keeffe (1991).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Bruker, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
All chemicals were of reagent grade quality obtained from commercial sources and used without further purification. The 10 ml portions of ethanol solutions of C10H8N2 (0.16 g, 1 mmol) and 2,6-pyridinedicarboxylic acid (1 mmol, 0.17 g) were mixed, then 12 ml of ethanol solution of Bi(NO3)3.5H2O (0.49 g, 1 mmol) was added. After stirring for half an hour, the solution was filtered and left for slowly evaporation at room temperature to obtain colorless block crystals suitable for X-ray
Yield: 70% (based on Bi). Anal. calcd. (%) for C20H17BiN8O12: C, 31.18; H, 2.22; N, 14.55. Found (%): C, 31.26; H, 2.09; N, 14.71.The H8 and H10 atoms were located from Fourier difference maps and refined with distance restraints of 0.93 Å, other H atoms were positioned geometrically and refined using a riding model, with C—H = 0.93 Å and with Uiso(H) = 1.2 times Ueq(C). The occupancy for C7/N4 and C11/N5 sites is 50% C and 50% N. In addition, the O1, N1 and O1, Bi1 atoms were refined with restraints (delu 0.01, isor 0.001 for O1).
The bismuth (III) coordination compounds have attracted considerable attention in recent years due to their fascinating structural architectures and potential applications in chemical industry, bioengineering, medical chemistry and so on. Up to now, a large number of bismuth (III) coordination compounds with various structural motifs and dimensionalities have been reported. As an expansion of such class of compounds, we have successfully isolated a novel bismuth (III) compound (C10H9N2)[Bi(C10H8N2)(NO3)4] which exhibits a two-dimensional layered structure built up from monoprotonated 2,2-bipyridines and [Bi(C10H8N2)(NO3)4]-coordination anions, connected through hydrogen bonds and π–π stacking interactions.
The formula unit of the title compound consists of one coordination anion, [Bi(C10H8N2)(NO3)4]-, which has a crystallographic twofold axis symmetry, and one disordered monoprotonated 2,2-bipyridine (Fig. 1). The disordered protonated 2,2-bipyridine in the structure of title compound is similar to that found in the compound (C10H9N2)(BiI4). In the coordination anion, the Bi(III) center is coordinated by two nitrogen atoms from one C10H8N2 ligand and eight oxygen atoms from four NO3- anions with two Bi—N equal distances of 2.444 (5) Å and Bi—O distances ranging from 2.470 (6) to 2.703 (8) Å. On the basis of bond strength calculations, the bond valence sum (BVS) for Bi1 is 3.30 which suggests that Bi has the +3 oxidation state.
Besides electrostatic interactions, the coordination anions [Bi(C10H8N2)(NO3)4]-and protonated 2,2-bipyridines are connected via N—H···O hydrogen bonds [N4—H7···O4, 3.145 (10) Å, 149°] into chains. These chains are further linked into two-dimensional layered structure through the π–π stacking interactions between bipy ligands along the c axis (Fig. 2). Interacting aromatic rings of bipy ligands in these stacks are parallel to each other with the interplanar distance of 2.868 (4) Å.
For potential applications of bismuth(III) coordination compounds in medical chemistry, see: Sun & Szeto (2003); Sun et al. (2004). For reported bismuth(III) coordination compounds, see: Andrews et al. (2006); Boitrel et al. (2003); Marsh (2002); Wullens et al. (1998); Yang et al. (2006, 2007). For [the structure of?] disordered protonated 2,2'-bipyridine, see: Bowmaker et al. (1998). For the bond-strength calculations, see: Brown & Altermatt (1985); Brese & O'Keeffe (1991).
Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Bruker, 2008); software used to prepare material for publication: SHELXTL (Bruker, 2008).(C10H9N2)[Bi(NO3)4(C10H8N2)] | F(000) = 1488 |
Mr = 770.40 | Dx = 2.049 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 2470 reflections |
a = 14.711 (5) Å | θ = 2.4–22.5° |
b = 10.169 (3) Å | µ = 7.14 mm−1 |
c = 16.832 (5) Å | T = 293 K |
β = 97.275 (6)° | Block, colorless |
V = 2497.7 (13) Å3 | 0.26 × 0.24 × 0.18 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 2224 independent reflections |
Radiation source: fine-focus sealed tube | 1895 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.036 |
φ and ω scans | θmax = 25.1°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | h = −13→17 |
Tmin = 0.258, Tmax = 0.360 | k = −12→12 |
5998 measured reflections | l = −20→17 |
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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.084 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0459P)2 + 9.2649P] where P = (Fo2 + 2Fc2)/3 |
2224 reflections | (Δ/σ)max < 0.001 |
194 parameters | Δρmax = 1.13 e Å−3 |
11 restraints | Δρmin = −1.43 e Å−3 |
(C10H9N2)[Bi(NO3)4(C10H8N2)] | V = 2497.7 (13) Å3 |
Mr = 770.40 | Z = 4 |
Monoclinic, C2/c | Mo Kα radiation |
a = 14.711 (5) Å | µ = 7.14 mm−1 |
b = 10.169 (3) Å | T = 293 K |
c = 16.832 (5) Å | 0.26 × 0.24 × 0.18 mm |
β = 97.275 (6)° |
Bruker APEXII CCD diffractometer | 2224 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2008) | 1895 reflections with I > 2σ(I) |
Tmin = 0.258, Tmax = 0.360 | Rint = 0.036 |
5998 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 11 restraints |
wR(F2) = 0.084 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.02 | Δρmax = 1.13 e Å−3 |
2224 reflections | Δρmin = −1.43 e Å−3 |
194 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'s involving l.s. planes. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Bi1 | 0.0000 | 0.43500 (3) | 0.2500 | 0.03845 (15) | |
C1 | −0.1200 (5) | 0.6312 (8) | 0.3579 (4) | 0.0481 (18) | |
H1 | −0.1338 | 0.5504 | 0.3794 | 0.058* | |
C2 | −0.1652 (5) | 0.7417 (7) | 0.3805 (4) | 0.0487 (18) | |
H2 | −0.2072 | 0.7358 | 0.4173 | 0.058* | |
C3 | −0.1466 (5) | 0.8595 (7) | 0.3475 (4) | 0.0508 (19) | |
H3 | −0.1785 | 0.9348 | 0.3589 | 0.061* | |
C4 | −0.0802 (5) | 0.8654 (7) | 0.2972 (4) | 0.0437 (17) | |
H4 | −0.0650 | 0.9462 | 0.2767 | 0.052* | |
C5 | −0.0351 (4) | 0.7518 (6) | 0.2764 (4) | 0.0335 (14) | |
C6 | 0.0361 (5) | 0.0371 (7) | −0.0162 (4) | 0.0473 (18) | |
C7 | 0.0484 (6) | 0.1654 (8) | 0.0057 (4) | 0.063 (2) | 0.50 |
H4A | 0.0131 | 0.2045 | 0.0413 | 0.075* | 0.25 |
H7 | 0.0132 | 0.2045 | 0.0413 | 0.075* | 0.50 |
C8 | 0.1149 (10) | 0.2352 (12) | −0.0267 (8) | 0.094 (4) | |
H8 | 0.100 (6) | 0.315 (5) | −0.006 (5) | 0.07 (3)* | |
C9 | 0.1650 (8) | 0.179 (2) | −0.0789 (8) | 0.111 (5) | |
H9 | 0.2086 | 0.2271 | −0.1017 | 0.134* | |
C10 | 0.1511 (9) | 0.0488 (18) | −0.0982 (7) | 0.098 (4) | |
H10 | 0.162 (10) | 0.000 (13) | −0.143 (6) | 0.15 (6)* | |
C11 | 0.0859 (6) | −0.0230 (9) | −0.0674 (5) | 0.067 (2) | 0.50 |
H5 | 0.0760 | −0.1109 | −0.0813 | 0.080* | 0.25 |
H11 | 0.0760 | −0.1109 | −0.0813 | 0.080* | 0.50 |
O1 | −0.1017 (5) | 0.2143 (8) | 0.2235 (4) | 0.095 (2) | |
O2 | −0.1374 (4) | 0.3450 (6) | 0.3126 (4) | 0.0784 (19) | |
O3 | −0.2044 (5) | 0.1589 (7) | 0.2956 (5) | 0.101 (2) | |
O4 | −0.0397 (5) | 0.3946 (7) | 0.0954 (4) | 0.0789 (18) | |
O5 | −0.1352 (4) | 0.5005 (6) | 0.1561 (3) | 0.0635 (15) | |
O6 | −0.1767 (5) | 0.4407 (7) | 0.0349 (4) | 0.094 (2) | |
N1 | −0.1488 (5) | 0.2376 (7) | 0.2795 (5) | 0.0631 (19) | |
N2 | −0.1182 (5) | 0.4426 (7) | 0.0941 (4) | 0.0593 (18) | |
N3 | −0.0577 (4) | 0.6348 (5) | 0.3070 (3) | 0.0365 (12) | |
N4 | 0.0484 (6) | 0.1654 (8) | 0.0057 (4) | 0.063 (2) | 0.50 |
N5 | 0.0859 (6) | −0.0230 (9) | −0.0674 (5) | 0.067 (2) | 0.50 |
U11 | U22 | U33 | U12 | U13 | U23 | |
Bi1 | 0.0478 (2) | 0.0270 (2) | 0.0448 (2) | 0.000 | 0.02219 (16) | 0.000 |
C1 | 0.055 (5) | 0.047 (4) | 0.047 (4) | −0.004 (4) | 0.023 (4) | 0.000 (4) |
C2 | 0.052 (4) | 0.052 (5) | 0.046 (4) | 0.010 (3) | 0.022 (3) | −0.005 (4) |
C3 | 0.061 (5) | 0.042 (4) | 0.053 (5) | 0.017 (4) | 0.017 (4) | −0.006 (4) |
C4 | 0.063 (5) | 0.026 (4) | 0.040 (4) | 0.009 (3) | 0.002 (3) | 0.002 (3) |
C5 | 0.041 (4) | 0.029 (3) | 0.032 (3) | 0.002 (3) | 0.012 (3) | −0.005 (3) |
C6 | 0.047 (4) | 0.053 (5) | 0.040 (4) | 0.011 (3) | 0.000 (3) | −0.002 (3) |
C7 | 0.076 (5) | 0.053 (5) | 0.059 (5) | 0.000 (4) | 0.006 (4) | −0.004 (4) |
C8 | 0.116 (10) | 0.066 (8) | 0.093 (8) | −0.020 (7) | −0.018 (8) | 0.003 (7) |
C9 | 0.062 (7) | 0.181 (15) | 0.089 (9) | −0.025 (9) | −0.001 (6) | 0.065 (10) |
C10 | 0.070 (7) | 0.164 (14) | 0.062 (7) | 0.047 (9) | 0.012 (6) | 0.023 (9) |
C11 | 0.069 (5) | 0.080 (6) | 0.052 (4) | 0.026 (4) | 0.011 (4) | −0.002 (4) |
O1 | 0.096 (2) | 0.094 (2) | 0.097 (2) | −0.0016 (10) | 0.0153 (10) | −0.0016 (10) |
O2 | 0.092 (5) | 0.055 (4) | 0.097 (5) | −0.028 (3) | 0.048 (4) | −0.016 (3) |
O3 | 0.093 (5) | 0.064 (4) | 0.152 (7) | −0.031 (4) | 0.039 (5) | 0.020 (4) |
O4 | 0.085 (5) | 0.087 (5) | 0.071 (4) | −0.001 (4) | 0.034 (4) | −0.023 (3) |
O5 | 0.064 (4) | 0.073 (4) | 0.054 (3) | 0.006 (3) | 0.008 (3) | −0.015 (3) |
O6 | 0.103 (5) | 0.121 (6) | 0.053 (4) | −0.031 (4) | −0.009 (4) | −0.013 (4) |
N1 | 0.062 (4) | 0.046 (4) | 0.087 (5) | −0.007 (3) | 0.031 (4) | 0.017 (4) |
N2 | 0.071 (5) | 0.058 (4) | 0.053 (4) | −0.013 (4) | 0.021 (4) | −0.010 (4) |
N3 | 0.046 (3) | 0.027 (3) | 0.039 (3) | 0.004 (2) | 0.013 (3) | 0.001 (2) |
N4 | 0.076 (5) | 0.053 (5) | 0.059 (5) | 0.000 (4) | 0.006 (4) | −0.004 (4) |
N5 | 0.069 (5) | 0.080 (6) | 0.052 (4) | 0.026 (4) | 0.011 (4) | −0.002 (4) |
Bi1—N3 | 2.444 (5) | C6—C11 | 1.346 (10) |
Bi1—N3i | 2.444 (5) | C6—C7 | 1.362 (10) |
Bi1—O5i | 2.470 (6) | C6—C6ii | 1.463 (15) |
Bi1—O5 | 2.470 (6) | C7—C8 | 1.376 (15) |
Bi1—O2 | 2.564 (6) | C7—H4A | 0.9300 |
Bi1—O2i | 2.564 (6) | C7—H7 | 0.9300 |
Bi1—O4 | 2.626 (6) | C8—C9 | 1.345 (19) |
Bi1—O4i | 2.626 (6) | C8—H8 | 0.92 (2) |
Bi1—O1 | 2.703 (8) | C9—C10 | 1.368 (19) |
Bi1—O1i | 2.703 (8) | C9—H9 | 0.9300 |
C1—N3 | 1.333 (8) | C10—C11 | 1.359 (17) |
C1—C2 | 1.383 (10) | C10—H10 | 0.93 (2) |
C1—H1 | 0.9300 | C11—H5 | 0.9300 |
C2—C3 | 1.363 (10) | C11—H11 | 0.9299 |
C2—H2 | 0.9300 | O1—N1 | 1.261 (9) |
C3—C4 | 1.372 (10) | O2—N1 | 1.228 (8) |
C3—H3 | 0.9300 | O3—N1 | 1.200 (8) |
C4—C5 | 1.399 (9) | O4—N2 | 1.252 (9) |
C4—H4 | 0.9300 | O5—N2 | 1.250 (8) |
C5—N3 | 1.353 (8) | O6—N2 | 1.232 (10) |
C5—C5i | 1.445 (12) | ||
N3—Bi1—N3i | 67.5 (2) | C3—C2—H2 | 120.8 |
N3—Bi1—O5i | 79.4 (2) | C1—C2—H2 | 120.8 |
N3i—Bi1—O5i | 74.64 (18) | C2—C3—C4 | 119.0 (6) |
N3—Bi1—O5 | 74.64 (18) | C2—C3—H3 | 120.5 |
N3i—Bi1—O5 | 79.4 (2) | C4—C3—H3 | 120.5 |
O5i—Bi1—O5 | 148.7 (3) | C3—C4—C5 | 121.1 (7) |
N3—Bi1—O2 | 78.73 (19) | C3—C4—H4 | 119.5 |
N3i—Bi1—O2 | 142.1 (2) | C5—C4—H4 | 119.5 |
O5i—Bi1—O2 | 116.5 (2) | N3—C5—C4 | 118.9 (6) |
O5—Bi1—O2 | 75.3 (2) | N3—C5—C5i | 117.6 (3) |
N3—Bi1—O2i | 142.1 (2) | C4—C5—C5i | 123.5 (4) |
N3i—Bi1—O2i | 78.73 (19) | C11—C6—C7 | 122.9 (8) |
O5i—Bi1—O2i | 75.3 (2) | C11—C6—C6ii | 119.0 (9) |
O5—Bi1—O2i | 116.5 (2) | C7—C6—C6ii | 118.1 (8) |
O2—Bi1—O2i | 138.2 (3) | C6—C7—C8 | 117.7 (9) |
N3—Bi1—O4 | 118.3 (2) | C6—C7—H4A | 121.2 |
N3i—Bi1—O4 | 77.65 (19) | C8—C7—H4A | 121.2 |
O5i—Bi1—O4 | 137.4 (2) | C6—C7—H7 | 121.2 |
O5—Bi1—O4 | 49.3 (2) | C8—C7—H7 | 121.2 |
O2—Bi1—O4 | 105.3 (2) | H4A—C7—H7 | 0.0 |
O2i—Bi1—O4 | 68.0 (2) | C9—C8—C7 | 120.8 (11) |
N3—Bi1—O4i | 77.65 (19) | C9—C8—H8 | 143 (6) |
N3i—Bi1—O4i | 118.3 (2) | C7—C8—H8 | 95 (6) |
O5i—Bi1—O4i | 49.3 (2) | C8—C9—C10 | 119.4 (11) |
O5—Bi1—O4i | 137.4 (2) | C8—C9—H9 | 120.3 |
O2—Bi1—O4i | 68.0 (2) | C10—C9—H9 | 120.3 |
O2i—Bi1—O4i | 105.3 (2) | C11—C10—C9 | 121.3 (11) |
O4—Bi1—O4i | 162.0 (3) | C11—C10—H10 | 103 (10) |
N3—Bi1—O1 | 122.9 (2) | C9—C10—H10 | 132 (10) |
N3i—Bi1—O1 | 147.0 (2) | C6—C11—C10 | 117.8 (10) |
O5i—Bi1—O1 | 135.5 (2) | C6—C11—H5 | 121.1 |
O5—Bi1—O1 | 74.6 (2) | C10—C11—H5 | 121.1 |
O2—Bi1—O1 | 47.4 (2) | C6—C11—H11 | 121.1 |
O2i—Bi1—O1 | 94.8 (2) | C10—C11—H11 | 121.1 |
O4—Bi1—O1 | 70.0 (2) | H5—C11—H11 | 0.1 |
O4i—Bi1—O1 | 94.7 (2) | N1—O1—Bi1 | 93.8 (5) |
N3—Bi1—O1i | 147.0 (2) | N1—O2—Bi1 | 101.6 (5) |
N3i—Bi1—O1i | 122.9 (2) | N2—O4—Bi1 | 92.6 (4) |
O5i—Bi1—O1i | 74.6 (2) | N2—O5—Bi1 | 100.2 (5) |
O5—Bi1—O1i | 135.5 (2) | O3—N1—O2 | 123.3 (8) |
O2—Bi1—O1i | 94.8 (2) | O3—N1—O1 | 119.9 (8) |
O2i—Bi1—O1i | 47.4 (2) | O2—N1—O1 | 116.7 (7) |
O4—Bi1—O1i | 94.7 (2) | O6—N2—O5 | 119.3 (8) |
O4i—Bi1—O1i | 70.0 (2) | O6—N2—O4 | 123.8 (7) |
O1—Bi1—O1i | 67.7 (3) | O5—N2—O4 | 116.8 (7) |
N3—C1—C2 | 123.2 (7) | C1—N3—C5 | 119.4 (6) |
N3—C1—H1 | 118.4 | C1—N3—Bi1 | 122.0 (5) |
C2—C1—H1 | 118.4 | C5—N3—Bi1 | 117.8 (4) |
C3—C2—C1 | 118.3 (6) | ||
N3—C1—C2—C3 | 1.6 (12) | N3i—Bi1—O5—N2 | 88.9 (5) |
C1—C2—C3—C4 | −3.9 (11) | O5i—Bi1—O5—N2 | 123.2 (5) |
C2—C3—C4—C5 | 3.3 (11) | O2—Bi1—O5—N2 | −119.6 (5) |
C3—C4—C5—N3 | −0.2 (10) | O2i—Bi1—O5—N2 | 17.3 (5) |
C3—C4—C5—C5i | 179.7 (8) | O4—Bi1—O5—N2 | 6.1 (4) |
C11—C6—C7—C8 | 0.1 (12) | O4i—Bi1—O5—N2 | −150.5 (4) |
C6ii—C6—C7—C8 | −178.4 (9) | O1—Bi1—O5—N2 | −70.5 (5) |
C6—C7—C8—C9 | 0.8 (15) | O1i—Bi1—O5—N2 | −37.8 (6) |
C7—C8—C9—C10 | −1.8 (18) | Bi1—O2—N1—O3 | 175.6 (7) |
C8—C9—C10—C11 | 2.0 (17) | Bi1—O2—N1—O1 | −7.8 (8) |
C7—C6—C11—C10 | 0.0 (12) | Bi1—O1—N1—O3 | −176.0 (7) |
C6ii—C6—C11—C10 | 178.5 (9) | Bi1—O1—N1—O2 | 7.3 (8) |
C9—C10—C11—C6 | −1.0 (15) | Bi1—O5—N2—O6 | 172.3 (6) |
N3—Bi1—O1—N1 | −28.6 (6) | Bi1—O5—N2—O4 | −11.0 (8) |
N3i—Bi1—O1—N1 | −127.7 (5) | Bi1—O4—N2—O6 | −173.2 (7) |
O5i—Bi1—O1—N1 | 81.7 (6) | Bi1—O4—N2—O5 | 10.2 (7) |
O5—Bi1—O1—N1 | −88.2 (5) | C2—C1—N3—C5 | 1.5 (11) |
O2—Bi1—O1—N1 | −4.2 (5) | C2—C1—N3—Bi1 | −168.7 (6) |
O2i—Bi1—O1—N1 | 155.6 (5) | C4—C5—N3—C1 | −2.2 (10) |
O4—Bi1—O1—N1 | −140.0 (5) | C5i—C5—N3—C1 | 177.9 (7) |
O4i—Bi1—O1—N1 | 49.8 (5) | C4—C5—N3—Bi1 | 168.4 (5) |
O1i—Bi1—O1—N1 | 115.9 (6) | C5i—C5—N3—Bi1 | −11.5 (9) |
N3—Bi1—O2—N1 | 163.7 (6) | N3i—Bi1—N3—C1 | 174.4 (7) |
N3i—Bi1—O2—N1 | 136.6 (5) | O5i—Bi1—N3—C1 | −107.9 (5) |
O5i—Bi1—O2—N1 | −124.2 (5) | O5—Bi1—N3—C1 | 89.8 (6) |
O5—Bi1—O2—N1 | 86.8 (5) | O2—Bi1—N3—C1 | 12.1 (5) |
O2i—Bi1—O2—N1 | −26.7 (5) | O2i—Bi1—N3—C1 | −156.7 (5) |
O4—Bi1—O2—N1 | 47.2 (6) | O4—Bi1—N3—C1 | 113.5 (5) |
O4i—Bi1—O2—N1 | −115.2 (6) | O4i—Bi1—N3—C1 | −57.6 (5) |
O1—Bi1—O2—N1 | 4.4 (5) | O1—Bi1—N3—C1 | 30.1 (6) |
O1i—Bi1—O2—N1 | −49.0 (6) | O1i—Bi1—N3—C1 | −69.4 (7) |
N3—Bi1—O4—N2 | −36.8 (5) | N3i—Bi1—N3—C5 | 4.1 (3) |
N3i—Bi1—O4—N2 | −92.6 (5) | O5i—Bi1—N3—C5 | 81.7 (5) |
O5i—Bi1—O4—N2 | −142.9 (4) | O5—Bi1—N3—C5 | −80.6 (5) |
O5—Bi1—O4—N2 | −6.0 (4) | O2—Bi1—N3—C5 | −158.3 (5) |
O2—Bi1—O4—N2 | 48.4 (5) | O2i—Bi1—N3—C5 | 33.0 (6) |
O2i—Bi1—O4—N2 | −175.3 (5) | O4—Bi1—N3—C5 | −56.9 (5) |
O4i—Bi1—O4—N2 | 113.7 (5) | O4i—Bi1—N3—C5 | 132.1 (5) |
O1—Bi1—O4—N2 | 80.5 (5) | O1—Bi1—N3—C5 | −140.3 (5) |
O1i—Bi1—O4—N2 | 144.7 (5) | O1i—Bi1—N3—C5 | 120.3 (5) |
N3—Bi1—O5—N2 | 158.3 (5) |
Symmetry codes: (i) −x, y, −z+1/2; (ii) −x, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | (C10H9N2)[Bi(NO3)4(C10H8N2)] |
Mr | 770.40 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 293 |
a, b, c (Å) | 14.711 (5), 10.169 (3), 16.832 (5) |
β (°) | 97.275 (6) |
V (Å3) | 2497.7 (13) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 7.14 |
Crystal size (mm) | 0.26 × 0.24 × 0.18 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2008) |
Tmin, Tmax | 0.258, 0.360 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5998, 2224, 1895 |
Rint | 0.036 |
(sin θ/λ)max (Å−1) | 0.597 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.084, 1.02 |
No. of reflections | 2224 |
No. of parameters | 194 |
No. of restraints | 11 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 1.13, −1.43 |
Computer programs: APEX2 (Bruker, 2008), SAINT (Bruker, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Bruker, 2008).
Bi1—N3 | 2.444 (5) | Bi1—O4 | 2.626 (6) |
Bi1—O5 | 2.470 (6) | Bi1—O1 | 2.703 (8) |
Bi1—O2 | 2.564 (6) |
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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 bismuth (III) coordination compounds have attracted considerable attention in recent years due to their fascinating structural architectures and potential applications in chemical industry, bioengineering, medical chemistry and so on. Up to now, a large number of bismuth (III) coordination compounds with various structural motifs and dimensionalities have been reported. As an expansion of such class of compounds, we have successfully isolated a novel bismuth (III) compound (C10H9N2)[Bi(C10H8N2)(NO3)4] which exhibits a two-dimensional layered structure built up from monoprotonated 2,2-bipyridines and [Bi(C10H8N2)(NO3)4]-coordination anions, connected through hydrogen bonds and π–π stacking interactions.
The formula unit of the title compound consists of one coordination anion, [Bi(C10H8N2)(NO3)4]-, which has a crystallographic twofold axis symmetry, and one disordered monoprotonated 2,2-bipyridine (Fig. 1). The disordered protonated 2,2-bipyridine in the structure of title compound is similar to that found in the compound (C10H9N2)(BiI4). In the coordination anion, the Bi(III) center is coordinated by two nitrogen atoms from one C10H8N2 ligand and eight oxygen atoms from four NO3- anions with two Bi—N equal distances of 2.444 (5) Å and Bi—O distances ranging from 2.470 (6) to 2.703 (8) Å. On the basis of bond strength calculations, the bond valence sum (BVS) for Bi1 is 3.30 which suggests that Bi has the +3 oxidation state.
Besides electrostatic interactions, the coordination anions [Bi(C10H8N2)(NO3)4]-and protonated 2,2-bipyridines are connected via N—H···O hydrogen bonds [N4—H7···O4, 3.145 (10) Å, 149°] into chains. These chains are further linked into two-dimensional layered structure through the π–π stacking interactions between bipy ligands along the c axis (Fig. 2). Interacting aromatic rings of bipy ligands in these stacks are parallel to each other with the interplanar distance of 2.868 (4) Å.