organic compounds
4,4′-Bipyridine–dimethylglyoxime (1/1)
aCollege of Chemical Engineering,Qinghai University, Xining 810016, People's Republic of China
*Correspondence e-mail: yyan217@163.com
In the title compound, C10H8N2·C4H8N2O2, both the dimethylglyoxime and the 4,4′-bipyridine molecules have crystallographic Ci symmetry. The molecules stack along the a-axis direction with a dihedral angle of 20.4 (8)° between their planes. In the crystal, the components are linked by O—H⋯N hydrogen bonds into alternating chains along [120] and [10].
Related literature
For the coordination modes of dimethylglyoxime, see: Malinovskii et al. (2004); Coropceanu et al. (2009). For its use in mediate magnetic interactions, see: Cervera et al. (1997).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536811054341/ld2038sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811054341/ld2038Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811054341/ld2038Isup3.mol
Mn(CH3COO)2.4H2O (0.025 g, 0.1 mmol) in 5 ml of water and CH3COONa(0.016 g, 0.2 mmol) were added to a mixture of H2dmg (0.024 g, 0.2 mmol) and 4,4'-dpy in 10 ml of methanol. The reaction mixture was boiled in a crucible for ~10 min. The solvent was then evaporated and colorless crystals of the title compound were obtained.
Methyl H atoms were placed in calculated position with C—H=0.96 Å, and torsion angles were refined, Uiso(H)=1.5Ueq(C). The position of the O-bound H-atom was determined from a difference Fourier map and then geometrically restrained with O—H=0.82 Å, and Uiso(H)=1.5Ueq(O). Aromatic H atoms were placed in calculated positions with C—H=0.93Å and refined in riding mode with Uiso(H)=1.2Ueq(C).
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. Molecular structure showing 50% probability displacement ellipsoids. | |
Fig. 2. Heterosoric stacks of the molecules. |
C10H8N2·C4H8N2O2 | F(000) = 288 |
Mr = 272.31 | 707.6(2) |
Monoclinic, P21/c | Dx = 1.278 Mg m−3 |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 8.7247 (17) Å | Cell parameters from 1636 reflections |
b = 7.1486 (14) Å | θ = 2.4–27.5° |
c = 11.502 (2) Å | µ = 0.09 mm−1 |
β = 99.44 (3)° | T = 298 K |
V = 707.6 (2) Å3 | Block, colourless |
Z = 2 | 0.20 × 0.18 × 0.15 mm |
Bruker SMART APEX CCD diffractometer | 1636 independent reflections |
Radiation source: fine-focus sealed tube | 1265 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.040 |
ϕ and ω scans | θmax = 27.5°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −11→11 |
Tmin = 0.982, Tmax = 0.987 | k = −9→9 |
9684 measured reflections | l = −14→14 |
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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.062P)2 + 0.1229P] where P = (Fo2 + 2Fc2)/3 |
1636 reflections | (Δ/σ)max = 0.021 |
93 parameters | Δρmax = 0.19 e Å−3 |
0 restraints | Δρmin = −0.13 e Å−3 |
C10H8N2·C4H8N2O2 | V = 707.6 (2) Å3 |
Mr = 272.31 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 8.7247 (17) Å | µ = 0.09 mm−1 |
b = 7.1486 (14) Å | T = 298 K |
c = 11.502 (2) Å | 0.20 × 0.18 × 0.15 mm |
β = 99.44 (3)° |
Bruker SMART APEX CCD diffractometer | 1636 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 1265 reflections with I > 2σ(I) |
Tmin = 0.982, Tmax = 0.987 | Rint = 0.040 |
9684 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.19 e Å−3 |
1636 reflections | Δρmin = −0.13 e Å−3 |
93 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 | ||
C1 | 0.02851 (14) | 0.09220 (19) | 0.48302 (12) | 0.0464 (3) | |
O1 | 0.72158 (14) | 0.26180 (17) | 0.14282 (10) | 0.0699 (4) | |
H1 | 0.7740 | 0.1714 | 0.1296 | 0.105* | |
N1 | 0.14118 (15) | 0.43625 (18) | 0.41432 (12) | 0.0600 (4) | |
N2 | 0.62500 (14) | 0.31488 (17) | 0.03926 (12) | 0.0556 (4) | |
C5 | −0.04603 (17) | 0.1905 (2) | 0.38632 (14) | 0.0557 (4) | |
H5 | −0.1364 | 0.1429 | 0.3421 | 0.067* | |
C6 | 0.55111 (16) | 0.4662 (2) | 0.05327 (13) | 0.0518 (4) | |
C3 | 0.21126 (19) | 0.3451 (2) | 0.50901 (16) | 0.0652 (5) | |
H3 | 0.2997 | 0.3982 | 0.5527 | 0.078* | |
C2 | 0.16017 (18) | 0.1766 (2) | 0.54594 (15) | 0.0591 (4) | |
H2 | 0.2137 | 0.1190 | 0.6130 | 0.071* | |
C4 | 0.01328 (18) | 0.3583 (2) | 0.35553 (15) | 0.0605 (4) | |
H4 | −0.0391 | 0.4208 | 0.2899 | 0.073* | |
C7 | 0.5661 (2) | 0.5712 (3) | 0.16681 (15) | 0.0701 (5) | |
H7A | 0.5414 | 0.4897 | 0.2275 | 0.105* | |
H7B | 0.4958 | 0.6754 | 0.1578 | 0.105* | |
H7C | 0.6707 | 0.6158 | 0.1881 | 0.105* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0428 (7) | 0.0475 (7) | 0.0486 (7) | 0.0018 (5) | 0.0062 (5) | −0.0049 (6) |
O1 | 0.0727 (8) | 0.0700 (8) | 0.0608 (7) | 0.0253 (6) | −0.0076 (6) | −0.0006 (5) |
N1 | 0.0600 (8) | 0.0521 (7) | 0.0671 (8) | −0.0065 (6) | 0.0081 (6) | −0.0017 (6) |
N2 | 0.0527 (7) | 0.0553 (7) | 0.0560 (7) | 0.0087 (5) | 0.0001 (5) | 0.0000 (5) |
C5 | 0.0513 (8) | 0.0572 (8) | 0.0550 (8) | −0.0064 (6) | −0.0020 (6) | 0.0017 (7) |
C6 | 0.0473 (7) | 0.0539 (8) | 0.0529 (8) | 0.0050 (6) | 0.0042 (6) | −0.0030 (6) |
C3 | 0.0583 (9) | 0.0607 (9) | 0.0723 (11) | −0.0125 (7) | −0.0024 (8) | −0.0045 (8) |
C2 | 0.0548 (8) | 0.0562 (9) | 0.0614 (9) | −0.0035 (7) | −0.0049 (7) | 0.0018 (7) |
C4 | 0.0621 (9) | 0.0570 (9) | 0.0596 (9) | −0.0021 (7) | 0.0020 (7) | 0.0063 (7) |
C7 | 0.0760 (11) | 0.0732 (11) | 0.0567 (9) | 0.0180 (9) | −0.0026 (8) | −0.0097 (8) |
C1—C5 | 1.384 (2) | C6—C6ii | 1.474 (3) |
C1—C2 | 1.391 (2) | C6—C7 | 1.493 (2) |
C1—C1i | 1.484 (3) | C3—C2 | 1.376 (2) |
O1—N2 | 1.3941 (17) | C3—H3 | 0.9300 |
O1—H1 | 0.8200 | C2—H2 | 0.9300 |
N1—C4 | 1.329 (2) | C4—H4 | 0.9300 |
N1—C3 | 1.329 (2) | C7—H7A | 0.9600 |
N2—C6 | 1.2831 (18) | C7—H7B | 0.9600 |
C5—C4 | 1.376 (2) | C7—H7C | 0.9600 |
C5—H5 | 0.9300 | ||
C5—C1—C2 | 115.92 (14) | C2—C3—H3 | 118.2 |
C5—C1—C1i | 121.91 (15) | C3—C2—C1 | 120.06 (15) |
C2—C1—C1i | 122.16 (16) | C3—C2—H2 | 120.0 |
N2—O1—H1 | 109.5 | C1—C2—H2 | 120.0 |
C4—N1—C3 | 116.54 (14) | N1—C4—C5 | 123.68 (15) |
C6—N2—O1 | 111.59 (12) | N1—C4—H4 | 118.2 |
C4—C5—C1 | 120.16 (14) | C5—C4—H4 | 118.2 |
C4—C5—H5 | 119.9 | C6—C7—H7A | 109.5 |
C1—C5—H5 | 119.9 | C6—C7—H7B | 109.5 |
N2—C6—C6ii | 114.82 (16) | H7A—C7—H7B | 109.5 |
N2—C6—C7 | 124.04 (14) | C6—C7—H7C | 109.5 |
C6ii—C6—C7 | 121.13 (16) | H7A—C7—H7C | 109.5 |
N1—C3—C2 | 123.61 (14) | H7B—C7—H7C | 109.5 |
N1—C3—H3 | 118.2 | ||
C2—C1—C5—C4 | 1.8 (2) | N1—C3—C2—C1 | 0.1 (3) |
C1i—C1—C5—C4 | −177.95 (15) | C5—C1—C2—C3 | −1.7 (2) |
O1—N2—C6—C6ii | 178.74 (15) | C1i—C1—C2—C3 | 178.06 (16) |
O1—N2—C6—C7 | −0.5 (2) | C3—N1—C4—C5 | −1.3 (2) |
C4—N1—C3—C2 | 1.4 (3) | C1—C5—C4—N1 | −0.3 (3) |
Symmetry codes: (i) −x, −y, −z+1; (ii) −x+1, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N1iii | 0.82 | 1.94 | 2.7459 (17) | 169 |
Symmetry code: (iii) −x+1, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C10H8N2·C4H8N2O2 |
Mr | 272.31 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 8.7247 (17), 7.1486 (14), 11.502 (2) |
β (°) | 99.44 (3) |
V (Å3) | 707.6 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.20 × 0.18 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.982, 0.987 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9684, 1636, 1265 |
Rint | 0.040 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.133, 1.05 |
No. of reflections | 1636 |
No. of parameters | 93 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.19, −0.13 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N1i | 0.82 | 1.94 | 2.7459 (17) | 168.7 |
Symmetry code: (i) −x+1, y−1/2, −z+1/2. |
Acknowledgements
This work was supported by the Qinghai Province International Science and Technology Cooperation Plan Projects (2011-H-808).
References
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Cervera, B., Ruiz, R., Lloret, F., Julve, M., Cano, J., Faus, J., Bois, C. & Mrozinski, J. (1997). J. Chem. Soc. Dalton Trans. pp. 395–401. CSD CrossRef Web of Science Google Scholar
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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.
Dimethylglyoxime (H2dmg) with its two oximate group (═N–O–) is a suitable scaffold to construct metal-containing building blocks for extended supramolecular architectures. Several complexes of transition metals with this ligand and its derivatives have been reported (Malinovskii et al., 2004; Coropceanu et al., 2009). Moreover, the NO oxime group has a remarkable efficiency to mediate magnetic interactions when it acts as a bridging ligand (Cervera et al., 1997).
Starting from Mn(CH3COO)2 and H2dmg, and using 4,4'-dpy as a bridging ligand, we have aimed to prepare a complex with superior magnetic properties. However, the reaction resulted in a stoichiometric (1:1) molecular complex of dimethylglyoxime-4,4'-bipyridine.
In this structure, the molecules of H2dmg and 4,4'-dpy are linked through O—H···N hydrogen bonds into alternating chains (Fig. 2).