organic compounds
4,4′-Bipyridine–cyclohexane-1,2,4,5-tetracarboxylic acid (1/1)
aGuangdong Medical College, School of Pharmacy, Dongguan 523808, People's Republic of China
*Correspondence e-mail: Jianqiangliu2010@126.com
In the title 1:1 adduct, C10H8N2·C10H12O8, the dihedral angle between the pyridine rings in the 4,4-bipyridine molecule is 8.33 (13)°. In the crystal, the cyclohexane-1,2,4,5-tetracarboxylic acid molecules interact with each other through intermolecular O—H⋯O hydrogen bonds, forming an infinite chain along the a axis, which is further linked perpendicularly by O—H⋯N hydrogen bonds involving bipyridine, resulting in a supramolecular corrugated sheet parallel to the (110) plane.
Related literature
For background to crystal engineering, see: Desiraju (1989); Schultheiss et al. (2010); Ebenezer & Muthiah (2010); An et al. (2010). For a related flexible tetracarboxylic acid, see Holmes et al. (1987); Wang et al. (2009). For a related structure, see: Bhogala et al.(2005).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2008); cell APEX2; data reduction: APEX2; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810039024/dn2606sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810039024/dn2606Isup2.hkl
A mixture of Cu(AC)2.H2O (23 mg, 0.1 mmol), H4L (24 mg, 0.1 mmol), 4,4'-pyridine (16 mg, 0.1 mmol), NaOH (0.1 mmol) and 10ml H2O was stirred for 2 h, and then the mixture was transferred to a 25 ml Teflon-lined reactor and kept under autogenous pressure at 423 K for 5 d. After the reactor was slowly cooled to room temperature over, the title compound was obtained.
All H atoms attached to C and O atoms were fixed geometrically and treated as riding with C—H = 0.98 Å (methine), 0.97 Å (methylene) or 0.93 Å (aromatic) and O—H = 0.82 Å with Uiso(H) = 1.2Ueq(C) or Uiso(H) = 1.5 Ueq(O) .
The study of non-covalent interactions, such as hydrogen bonding, plays an important role in molecular assembly and crystal engineering (Desiraju, 1989; Schultheiss et al., 2010; Ebenezer & Muthiah, 2010). The simplest cyclohexane-carboxylic acid was firstly employed in the area of coordination chemistry, and many metal–organic frameworks containing cyclohexane-polycarboxylate ligands have been obtained (Holmes et al., 1987; Wang et al., 2009). Furthermore, the cyclohexane-1,2,4,5-tetracarboxylic acid (H4L) with H-bond donor/acceptor groups provides inter- and intramolecular H-bonding interactions with N-donor ligands, a driving force for the assembly of polymeric motifs (An et al., 2010). Initially, we attempted to use H4L and 4,4'-bipyridine as co-ligands in the presence of CuII ion, unfortunately, we only obtained the title compound.
The
contains two molecules the 4,4'-bipyridine and the cyclohexane-1,2,4,5-tetracarboxylic acid (H4L) connected through O—H···N hydrogen bond (Fig. 1). The cyclohexane-1,2,4,5-tetracarboxylic acid molecule interacts with symmetry related molecules through intermolecular O—H···O hydrogen bonds (Table 1), forming a chain parallel to the a axis. These chains are further linked by O—H···N hydrogen bonds involving the bipyridine resulting in a supramolecular corrugated sheet parallel to the (110) plane (Fig. 2, Table 1). Distances and angles agree with related compounds (Bhogala et al., 2005). It is interesting to note that the cyclohexane-1,2,4,5-tetracarboxylic acid is chiral with four stereogenic center corresponding to the RSRS/SRSR diastereoisomer.For background to crystal engineering, see: Desiraju (1989); Schultheiss et al. (2010); Ebenezer & Muthiah (2010); An et al. (2010). For the related cyclohexane-carboxylic acid, see Holmes et al. (1987); Wang et al. (2009). For a related structure, see: Bhogala et al.(2005).
Data collection: APEX2 (Bruker, 2008); cell
APEX2 (Bruker, 2008); data reduction: APEX2 (Bruker, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: Please provide missing details.C10H8N2·C10H12O8 | F(000) = 872 |
Mr = 416.38 | Dx = 1.456 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3417 reflections |
a = 12.345 (3) Å | θ = 1.7–25.2° |
b = 9.724 (2) Å | µ = 0.11 mm−1 |
c = 16.497 (4) Å | T = 298 K |
β = 106.364 (3)° | Block, colourless |
V = 1900.1 (8) Å3 | 0.22 × 0.15 × 0.08 mm |
Z = 4 |
Bruker APEXII area-detector diffractometer | 3416 independent reflections |
Radiation source: fine-focus sealed tube | 2243 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.032 |
φ and ω scan | θmax = 25.2°, θmin = 1.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008) | h = −14→14 |
Tmin = 0.975, Tmax = 0.991 | k = −11→11 |
9330 measured reflections | l = −19→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)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0639P)2 + 0.4389P] where P = (Fo2 + 2Fc2)/3 |
3416 reflections | (Δ/σ)max < 0.001 |
275 parameters | Δρmax = 0.26 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C10H8N2·C10H12O8 | V = 1900.1 (8) Å3 |
Mr = 416.38 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.345 (3) Å | µ = 0.11 mm−1 |
b = 9.724 (2) Å | T = 298 K |
c = 16.497 (4) Å | 0.22 × 0.15 × 0.08 mm |
β = 106.364 (3)° |
Bruker APEXII area-detector diffractometer | 3416 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2008) | 2243 reflections with I > 2σ(I) |
Tmin = 0.975, Tmax = 0.991 | Rint = 0.032 |
9330 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.26 e Å−3 |
3416 reflections | Δρmin = −0.22 e Å−3 |
275 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | ||
O1 | 0.27706 (14) | 0.44090 (19) | 0.44732 (12) | 0.0641 (5) | |
H1 | 0.2994 | 0.5168 | 0.4665 | 0.096* | |
O2 | 0.11097 (14) | 0.54658 (17) | 0.41482 (10) | 0.0518 (5) | |
O3 | 0.18983 (14) | 0.55768 (18) | 0.23240 (12) | 0.0636 (5) | |
O4 | 0.34420 (14) | 0.42876 (17) | 0.26978 (12) | 0.0589 (5) | |
H4 | 0.3756 | 0.5037 | 0.2794 | 0.088* | |
O5 | −0.04992 (17) | 0.3310 (2) | 0.45621 (11) | 0.0667 (5) | |
H5 | −0.0883 | 0.3681 | 0.4832 | 0.100* | |
O6 | −0.15670 (16) | 0.4586 (2) | 0.35120 (11) | 0.0692 (6) | |
O7 | −0.05944 (14) | 0.47589 (18) | 0.07724 (9) | 0.0553 (5) | |
O8 | 0.10445 (14) | 0.3927 (2) | 0.06854 (10) | 0.0578 (5) | |
H8 | 0.0852 | 0.4324 | 0.0229 | 0.087* | |
C11 | 0.0262 (2) | 0.4068 (2) | 0.10675 (14) | 0.0448 (6) | |
C12 | 0.04494 (19) | 0.3292 (2) | 0.18872 (13) | 0.0434 (6) | |
H12 | 0.0147 | 0.2365 | 0.1738 | 0.052* | |
C13 | −0.02428 (18) | 0.3930 (2) | 0.24293 (13) | 0.0439 (6) | |
H13A | −0.0030 | 0.4887 | 0.2537 | 0.053* | |
H13B | −0.1037 | 0.3900 | 0.2120 | 0.053* | |
C14 | −0.00665 (19) | 0.3186 (2) | 0.32665 (14) | 0.0447 (6) | |
H14 | −0.0332 | 0.2241 | 0.3130 | 0.054* | |
C15 | −0.0792 (2) | 0.3797 (3) | 0.37755 (15) | 0.0510 (6) | |
C16 | 0.11869 (19) | 0.3086 (2) | 0.37600 (14) | 0.0439 (6) | |
H16 | 0.1234 | 0.2463 | 0.4236 | 0.053* | |
C17 | 0.1676 (2) | 0.4448 (3) | 0.41336 (13) | 0.0448 (6) | |
C18 | 0.1851 (2) | 0.2407 (2) | 0.32092 (14) | 0.0462 (6) | |
H18A | 0.1610 | 0.1457 | 0.3110 | 0.055* | |
H18B | 0.2646 | 0.2405 | 0.3517 | 0.055* | |
C19 | 0.17057 (19) | 0.3116 (2) | 0.23536 (14) | 0.0426 (6) | |
H19 | 0.2032 | 0.2509 | 0.2011 | 0.051* | |
C20 | 0.23417 (19) | 0.4466 (2) | 0.24532 (13) | 0.0434 (6) | |
N1 | 0.64426 (18) | 1.3190 (2) | 0.48929 (14) | 0.0598 (6) | |
N2 | 0.45114 (19) | 0.6692 (2) | 0.31157 (14) | 0.0628 (6) | |
C1 | 0.3891 (2) | 0.7823 (3) | 0.2905 (2) | 0.0752 (9) | |
H1A | 0.3180 | 0.7743 | 0.2521 | 0.090* | |
C2 | 0.5531 (2) | 0.6854 (3) | 0.36420 (18) | 0.0708 (8) | |
H2 | 0.5992 | 0.6083 | 0.3784 | 0.085* | |
C3 | 0.5951 (2) | 0.8100 (3) | 0.39928 (17) | 0.0642 (8) | |
H3 | 0.6675 | 0.8154 | 0.4360 | 0.077* | |
C4 | 0.4243 (2) | 0.9105 (3) | 0.32249 (19) | 0.0713 (8) | |
H4A | 0.3774 | 0.9863 | 0.3056 | 0.086* | |
C5 | 0.5293 (2) | 0.9264 (3) | 0.37970 (15) | 0.0502 (6) | |
C6 | 0.5699 (2) | 1.0628 (3) | 0.41730 (15) | 0.0510 (6) | |
C7 | 0.6679 (2) | 1.0774 (3) | 0.4825 (2) | 0.0817 (10) | |
H7 | 0.7114 | 1.0005 | 0.5039 | 0.098* | |
C8 | 0.7015 (2) | 1.2050 (3) | 0.5157 (2) | 0.0809 (10) | |
H8A | 0.7682 | 1.2116 | 0.5592 | 0.097* | |
C9 | 0.5115 (2) | 1.1812 (3) | 0.39072 (19) | 0.0710 (8) | |
H9 | 0.4452 | 1.1782 | 0.3466 | 0.085* | |
C10 | 0.5494 (2) | 1.3050 (3) | 0.42825 (19) | 0.0770 (9) | |
H10 | 0.5059 | 1.3829 | 0.4096 | 0.092* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0506 (10) | 0.0539 (12) | 0.0736 (12) | 0.0025 (9) | −0.0055 (9) | −0.0150 (9) |
O2 | 0.0551 (10) | 0.0423 (10) | 0.0511 (10) | 0.0043 (8) | 0.0035 (8) | −0.0037 (7) |
O3 | 0.0496 (10) | 0.0378 (11) | 0.0928 (14) | −0.0003 (8) | 0.0027 (9) | 0.0034 (9) |
O4 | 0.0451 (10) | 0.0509 (11) | 0.0739 (12) | −0.0023 (8) | 0.0055 (9) | −0.0018 (9) |
O5 | 0.0850 (14) | 0.0675 (13) | 0.0526 (11) | 0.0182 (10) | 0.0275 (10) | 0.0121 (9) |
O6 | 0.0627 (12) | 0.0789 (14) | 0.0641 (12) | 0.0200 (11) | 0.0148 (9) | 0.0068 (10) |
O7 | 0.0520 (10) | 0.0667 (12) | 0.0430 (9) | 0.0097 (9) | 0.0066 (8) | 0.0042 (8) |
O8 | 0.0573 (11) | 0.0720 (13) | 0.0431 (10) | 0.0095 (9) | 0.0123 (8) | 0.0055 (8) |
C11 | 0.0442 (14) | 0.0421 (14) | 0.0432 (13) | −0.0045 (11) | 0.0042 (11) | −0.0098 (10) |
C12 | 0.0472 (13) | 0.0361 (13) | 0.0405 (12) | −0.0070 (10) | 0.0019 (10) | −0.0041 (10) |
C13 | 0.0406 (13) | 0.0433 (14) | 0.0429 (12) | −0.0008 (11) | 0.0040 (10) | 0.0006 (10) |
C14 | 0.0496 (13) | 0.0344 (13) | 0.0472 (13) | −0.0021 (11) | 0.0090 (11) | −0.0006 (10) |
C15 | 0.0538 (15) | 0.0488 (16) | 0.0481 (14) | −0.0035 (13) | 0.0106 (12) | 0.0012 (12) |
C16 | 0.0499 (14) | 0.0350 (13) | 0.0435 (13) | 0.0012 (11) | 0.0079 (10) | 0.0055 (10) |
C17 | 0.0506 (15) | 0.0448 (15) | 0.0341 (12) | 0.0025 (12) | 0.0038 (10) | 0.0021 (10) |
C18 | 0.0528 (14) | 0.0309 (13) | 0.0500 (13) | 0.0029 (11) | 0.0064 (11) | 0.0011 (10) |
C19 | 0.0460 (13) | 0.0346 (13) | 0.0447 (13) | 0.0006 (10) | 0.0085 (10) | −0.0041 (10) |
C20 | 0.0417 (13) | 0.0461 (15) | 0.0377 (12) | −0.0015 (11) | 0.0037 (10) | −0.0014 (10) |
N1 | 0.0532 (13) | 0.0507 (14) | 0.0681 (14) | −0.0042 (11) | 0.0051 (11) | −0.0076 (11) |
N2 | 0.0562 (14) | 0.0545 (15) | 0.0725 (15) | −0.0120 (12) | 0.0098 (12) | −0.0052 (11) |
C1 | 0.0527 (17) | 0.064 (2) | 0.097 (2) | −0.0059 (15) | 0.0005 (15) | −0.0144 (17) |
C2 | 0.0712 (19) | 0.0468 (17) | 0.081 (2) | −0.0035 (14) | 0.0001 (16) | 0.0061 (14) |
C3 | 0.0571 (16) | 0.0519 (17) | 0.0703 (18) | −0.0051 (13) | −0.0037 (13) | 0.0025 (13) |
C4 | 0.0489 (16) | 0.0555 (18) | 0.096 (2) | −0.0009 (13) | −0.0007 (15) | −0.0136 (15) |
C5 | 0.0472 (14) | 0.0479 (16) | 0.0551 (14) | −0.0075 (12) | 0.0140 (11) | −0.0017 (11) |
C6 | 0.0438 (14) | 0.0524 (16) | 0.0554 (15) | −0.0050 (12) | 0.0116 (11) | −0.0009 (12) |
C7 | 0.0556 (17) | 0.0535 (19) | 0.113 (3) | 0.0029 (14) | −0.0137 (17) | −0.0099 (17) |
C8 | 0.0566 (18) | 0.063 (2) | 0.100 (2) | −0.0029 (16) | −0.0161 (16) | −0.0139 (17) |
C9 | 0.0581 (17) | 0.0552 (18) | 0.0795 (19) | −0.0018 (14) | −0.0135 (14) | −0.0039 (14) |
C10 | 0.0664 (19) | 0.0549 (19) | 0.090 (2) | 0.0023 (15) | −0.0099 (16) | −0.0040 (15) |
O1—C17 | 1.310 (3) | C18—H18A | 0.9700 |
O1—H1 | 0.8200 | C18—H18B | 0.9700 |
O2—C17 | 1.215 (3) | C19—C20 | 1.515 (3) |
O3—C20 | 1.202 (3) | C19—H19 | 0.9800 |
O4—C20 | 1.315 (3) | N1—C10 | 1.319 (3) |
O4—H4 | 0.8200 | N1—C8 | 1.321 (3) |
O5—C15 | 1.332 (3) | N2—C2 | 1.321 (3) |
O5—H5 | 0.8200 | N2—C1 | 1.329 (4) |
O6—C15 | 1.207 (3) | C1—C4 | 1.375 (4) |
O7—C11 | 1.231 (3) | C1—H1A | 0.9300 |
O8—C11 | 1.301 (3) | C2—C3 | 1.379 (4) |
O8—H8 | 0.8200 | C2—H2 | 0.9300 |
C11—C12 | 1.508 (3) | C3—C5 | 1.378 (4) |
C12—C13 | 1.532 (3) | C3—H3 | 0.9300 |
C12—C19 | 1.534 (3) | C4—C5 | 1.380 (3) |
C12—H12 | 0.9800 | C4—H4A | 0.9300 |
C13—C14 | 1.520 (3) | C5—C6 | 1.490 (3) |
C13—H13A | 0.9700 | C6—C9 | 1.364 (4) |
C13—H13B | 0.9700 | C6—C7 | 1.381 (4) |
C14—C15 | 1.512 (3) | C7—C8 | 1.372 (4) |
C14—C16 | 1.535 (3) | C7—H7 | 0.9300 |
C14—H14 | 0.9800 | C8—H8A | 0.9300 |
C16—C17 | 1.513 (3) | C9—C10 | 1.374 (4) |
C16—C18 | 1.534 (3) | C9—H9 | 0.9300 |
C16—H16 | 0.9800 | C10—H10 | 0.9300 |
C18—C19 | 1.535 (3) | ||
C17—O1—H1 | 109.5 | H18A—C18—H18B | 107.6 |
C20—O4—H4 | 109.5 | C20—C19—C12 | 112.18 (19) |
C15—O5—H5 | 109.5 | C20—C19—C18 | 111.54 (18) |
C11—O8—H8 | 109.5 | C12—C19—C18 | 110.52 (19) |
O7—C11—O8 | 122.5 (2) | C20—C19—H19 | 107.5 |
O7—C11—C12 | 121.7 (2) | C12—C19—H19 | 107.5 |
O8—C11—C12 | 115.7 (2) | C18—C19—H19 | 107.5 |
C11—C12—C13 | 110.54 (19) | O3—C20—O4 | 123.5 (2) |
C11—C12—C19 | 112.56 (19) | O3—C20—C19 | 124.3 (2) |
C13—C12—C19 | 113.81 (18) | O4—C20—C19 | 112.2 (2) |
C11—C12—H12 | 106.5 | C10—N1—C8 | 116.2 (2) |
C13—C12—H12 | 106.5 | C2—N2—C1 | 116.4 (2) |
C19—C12—H12 | 106.5 | N2—C1—C4 | 123.6 (3) |
C14—C13—C12 | 112.17 (19) | N2—C1—H1A | 118.2 |
C14—C13—H13A | 109.2 | C4—C1—H1A | 118.2 |
C12—C13—H13A | 109.2 | N2—C2—C3 | 123.8 (3) |
C14—C13—H13B | 109.2 | N2—C2—H2 | 118.1 |
C12—C13—H13B | 109.2 | C3—C2—H2 | 118.1 |
H13A—C13—H13B | 107.9 | C5—C3—C2 | 119.8 (2) |
C15—C14—C13 | 111.2 (2) | C5—C3—H3 | 120.1 |
C15—C14—C16 | 113.39 (19) | C2—C3—H3 | 120.1 |
C13—C14—C16 | 112.16 (19) | C1—C4—C5 | 119.9 (3) |
C15—C14—H14 | 106.5 | C1—C4—H4A | 120.1 |
C13—C14—H14 | 106.5 | C5—C4—H4A | 120.1 |
C16—C14—H14 | 106.5 | C3—C5—C4 | 116.5 (2) |
O6—C15—O5 | 123.2 (2) | C3—C5—C6 | 121.8 (2) |
O6—C15—C14 | 125.7 (2) | C4—C5—C6 | 121.7 (2) |
O5—C15—C14 | 111.1 (2) | C9—C6—C7 | 115.6 (2) |
C17—C16—C18 | 113.58 (19) | C9—C6—C5 | 122.2 (2) |
C17—C16—C14 | 112.76 (19) | C7—C6—C5 | 122.3 (2) |
C18—C16—C14 | 109.87 (18) | C8—C7—C6 | 120.2 (3) |
C17—C16—H16 | 106.7 | C8—C7—H7 | 119.9 |
C18—C16—H16 | 106.7 | C6—C7—H7 | 119.9 |
C14—C16—H16 | 106.7 | N1—C8—C7 | 123.7 (3) |
O2—C17—O1 | 123.0 (2) | N1—C8—H8A | 118.2 |
O2—C17—C16 | 123.7 (2) | C7—C8—H8A | 118.2 |
O1—C17—C16 | 113.2 (2) | C6—C9—C10 | 120.9 (2) |
C16—C18—C19 | 114.08 (18) | C6—C9—H9 | 119.6 |
C16—C18—H18A | 108.7 | C10—C9—H9 | 119.6 |
C19—C18—H18A | 108.7 | N1—C10—C9 | 123.4 (3) |
C16—C18—H18B | 108.7 | N1—C10—H10 | 118.3 |
C19—C18—H18B | 108.7 | C9—C10—H10 | 118.3 |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N1i | 0.82 | 1.81 | 2.630 (3) | 177 |
O4—H4···N2 | 0.82 | 1.86 | 2.678 (3) | 175 |
O5—H5···O2ii | 0.82 | 1.96 | 2.723 (2) | 153 |
O8—H8···O7iii | 0.82 | 1.82 | 2.641 (2) | 174 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x, −y+1, −z+1; (iii) −x, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C10H8N2·C10H12O8 |
Mr | 416.38 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 12.345 (3), 9.724 (2), 16.497 (4) |
β (°) | 106.364 (3) |
V (Å3) | 1900.1 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.22 × 0.15 × 0.08 |
Data collection | |
Diffractometer | Bruker APEXII area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2008) |
Tmin, Tmax | 0.975, 0.991 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9330, 3416, 2243 |
Rint | 0.032 |
(sin θ/λ)max (Å−1) | 0.599 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.143, 1.05 |
No. of reflections | 3416 |
No. of parameters | 275 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.26, −0.22 |
Computer programs: APEX2 (Bruker, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), Please provide missing details.
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···N1i | 0.82 | 1.81 | 2.630 (3) | 177.2 |
O4—H4···N2 | 0.82 | 1.86 | 2.678 (3) | 174.7 |
O5—H5···O2ii | 0.82 | 1.96 | 2.723 (2) | 153.4 |
O8—H8···O7iii | 0.82 | 1.82 | 2.641 (2) | 173.5 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x, −y+1, −z+1; (iii) −x, −y+1, −z. |
Acknowledgements
The author is grateful to Guangdong Medical College for financial support.
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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 study of non-covalent interactions, such as hydrogen bonding, plays an important role in molecular assembly and crystal engineering (Desiraju, 1989; Schultheiss et al., 2010; Ebenezer & Muthiah, 2010). The simplest cyclohexane-carboxylic acid was firstly employed in the area of coordination chemistry, and many metal–organic frameworks containing cyclohexane-polycarboxylate ligands have been obtained (Holmes et al., 1987; Wang et al., 2009). Furthermore, the cyclohexane-1,2,4,5-tetracarboxylic acid (H4L) with H-bond donor/acceptor groups provides inter- and intramolecular H-bonding interactions with N-donor ligands, a driving force for the assembly of polymeric motifs (An et al., 2010). Initially, we attempted to use H4L and 4,4'-bipyridine as co-ligands in the presence of CuII ion, unfortunately, we only obtained the title compound.
The asymmetric unit contains two molecules the 4,4'-bipyridine and the cyclohexane-1,2,4,5-tetracarboxylic acid (H4L) connected through O—H···N hydrogen bond (Fig. 1). The cyclohexane-1,2,4,5-tetracarboxylic acid molecule interacts with symmetry related molecules through intermolecular O—H···O hydrogen bonds (Table 1), forming a chain parallel to the a axis. These chains are further linked by O—H···N hydrogen bonds involving the bipyridine resulting in a supramolecular corrugated sheet parallel to the (110) plane (Fig. 2, Table 1). Distances and angles agree with related compounds (Bhogala et al., 2005). It is interesting to note that the cyclohexane-1,2,4,5-tetracarboxylic acid is chiral with four stereogenic center corresponding to the RSRS/SRSR diastereoisomer.