Acta Cryst. (2008). E64, m1626 [ doi:10.1107/S1600536808038889 ]
-2-[2-(carboxymethyl)phenyl]acetato]In the title salt, [K(C10H9O4)]n, the K+ ions are coordinated by six O atoms from three different anions, and there is a cation-
interaction at ca 3.14 Å. The 2-[2-(carboxymethyl)phenyl]acetate anions are stabilized by intramolecular O-H
O hydrogen bonds, and the K+ cations are linked into one-dimensional coordination polymers running along the b axis; these are further interconnected by weak C-H
O hydrogen bonds.
Single Crystals of (I) were obtained by slow evaporation of a solution containning 1,2-phenylenediacetic acid (1.0 g, 5.15 mmol), potassium hydroxide (0.289 g, 5.15 mmol) in MeOH/H2O (5:1).
Aromatic and methylene H atoms were positioned geometrically and constrained using the riding-model approximation [C-Haryl = 0.93 Å, Uiso(Haryl)= 1.2 Ueq(Caryl); C-Hmethylene = 0.97 Å, Uiso(Hmethylene) = 1.5 Ueq(Cmethylene)]. Atom H4', which is involved in a hydrogen-bonding interaction, was located by difference Fourier map, constrained using the riding-model approximation [Uiso(O4-H') = 1.5 Ueq(O4)] and the coordinates were refined freely.
Data collection: SMART (Bruker, 2000); cell refinement: SAINT-Plus-NT (Bruker, 2001); data reduction: SAINT-Plus-NT (Bruker, 2001); program(s) used to solve structure: SHELXTL-NT (Sheldrick, 2008); program(s) used to refine structure: SHELXTL-NT (Sheldrick, 2008); molecular graphics: SHELXTL-NT (Sheldrick, 2008); software used to prepare material for publication: PLATON (Spek, 2003) and publCIF (Westrip, 2008).
| [K(C10H9O4)] | F(000) = 480 |
| Mr = 232.27 | Dx = 1.546 Mg m−3 |
| Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2ybc | Cell parameters from 4833 reflections |
| a = 8.3365 (14) Å | θ = 2.3–28.2° |
| b = 6.7886 (11) Å | µ = 0.52 mm−1 |
| c = 17.651 (3) Å | T = 293 K |
| β = 92.543 (3)° | Rectangular, colourless |
| V = 997.9 (3) Å3 | 0.45 × 0.30 × 0.28 mm |
| Z = 4 |
| Bruker SMART APEX CCD area-detector diffractometer | 1727 independent reflections |
| Radiation source: fine-focus sealed tube | 1560 reflections with I > 2σ(I) |
| graphite | Rint = 0.039 |
| φ and ω scans | θmax = 25.0°, θmin = 2.3° |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −9→9 |
| Tmin = 0.713, Tmax = 0.864 | k = −8→8 |
| 8711 measured reflections | l = −20→20 |
| 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)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.101 | H atoms treated by a mixture of independent and constrained refinement |
| S = 1.08 | w = 1/[σ2(Fo2) + (0.0462P)2 + 0.3852P] where P = (Fo2 + 2Fc2)/3 |
| 1727 reflections | (Δ/σ)max = 0.001 |
| 139 parameters | Δρmax = 0.21 e Å−3 |
| 0 restraints | Δρmin = −0.20 e Å−3 |
| [K(C10H9O4)] | V = 997.9 (3) Å3 |
| Mr = 232.27 | Z = 4 |
| Monoclinic, P21/c | Mo Kα radiation |
| a = 8.3365 (14) Å | µ = 0.52 mm−1 |
| b = 6.7886 (11) Å | T = 293 K |
| c = 17.651 (3) Å | 0.45 × 0.30 × 0.28 mm |
| β = 92.543 (3)° |
| Bruker SMART APEX CCD area-detector diffractometer | 1727 independent reflections |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1560 reflections with I > 2σ(I) |
| Tmin = 0.713, Tmax = 0.864 | Rint = 0.039 |
| 8711 measured reflections | θmax = 25.0° |
| R[F2 > 2σ(F2)] = 0.041 | H atoms treated by a mixture of independent and constrained refinement |
| wR(F2) = 0.101 | Δρmax = 0.21 e Å−3 |
| S = 1.08 | Δρmin = −0.20 e Å−3 |
| 1727 reflections | Absolute structure: ? |
| 139 parameters | Flack parameter: ? |
| 0 restraints | Rogers parameter: ? |
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 | ||
| K1 | 0.38073 (6) | 0.33470 (7) | 0.44502 (3) | 0.0455 (2) | |
| O1 | 0.2998 (2) | 0.6914 (2) | 0.51210 (9) | 0.0487 (4) | |
| O2 | 0.26242 (19) | 1.0124 (2) | 0.52043 (9) | 0.0449 (4) | |
| O3 | 0.5412 (2) | 0.6608 (2) | 0.38998 (11) | 0.0569 (5) | |
| O4 | 0.5243 (2) | 0.9834 (2) | 0.37776 (9) | 0.0471 (4) | |
| H4' | 0.612 (4) | 0.991 (4) | 0.4186 (16) | 0.071* | |
| C1 | 0.2360 (3) | 0.8431 (3) | 0.49014 (12) | 0.0350 (5) | |
| C2 | 0.1154 (3) | 0.8450 (3) | 0.42353 (13) | 0.0449 (6) | |
| H2A | 0.0091 | 0.8637 | 0.4426 | 0.054* | |
| H2B | 0.1379 | 0.9572 | 0.3917 | 0.054* | |
| C3 | 0.1135 (3) | 0.6626 (3) | 0.37550 (12) | 0.0362 (5) | |
| C4 | 0.2223 (3) | 0.6353 (3) | 0.31858 (12) | 0.0378 (5) | |
| C5 | 0.2138 (3) | 0.4620 (4) | 0.27695 (12) | 0.0458 (6) | |
| H5 | 0.2859 | 0.4419 | 0.2389 | 0.055* | |
| C6 | 0.1017 (3) | 0.3192 (4) | 0.29041 (14) | 0.0495 (6) | |
| H6 | 0.0988 | 0.2039 | 0.2619 | 0.059* | |
| C7 | −0.0052 (3) | 0.3471 (3) | 0.34570 (14) | 0.0498 (6) | |
| H7 | −0.0816 | 0.2512 | 0.3549 | 0.060* | |
| C8 | 0.0006 (3) | 0.5179 (3) | 0.38770 (13) | 0.0434 (6) | |
| H8 | −0.0730 | 0.5365 | 0.4251 | 0.052* | |
| C9 | 0.3453 (3) | 0.7892 (4) | 0.30161 (13) | 0.0497 (6) | |
| H9A | 0.2919 | 0.9158 | 0.2963 | 0.060* | |
| H9B | 0.3909 | 0.7583 | 0.2534 | 0.060* | |
| C10 | 0.4803 (3) | 0.8065 (3) | 0.36163 (12) | 0.0393 (5) |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| K1 | 0.0465 (3) | 0.0342 (3) | 0.0548 (3) | 0.0001 (2) | −0.0082 (2) | 0.0024 (2) |
| O1 | 0.0540 (10) | 0.0367 (9) | 0.0542 (10) | 0.0060 (8) | −0.0139 (8) | −0.0016 (7) |
| O2 | 0.0498 (10) | 0.0346 (8) | 0.0497 (9) | 0.0011 (7) | −0.0047 (7) | −0.0062 (7) |
| O3 | 0.0503 (10) | 0.0450 (10) | 0.0735 (12) | −0.0046 (8) | −0.0172 (9) | 0.0114 (9) |
| O4 | 0.0466 (10) | 0.0432 (9) | 0.0508 (9) | −0.0003 (7) | −0.0053 (8) | 0.0004 (7) |
| C1 | 0.0315 (11) | 0.0362 (12) | 0.0379 (11) | −0.0003 (9) | 0.0064 (9) | 0.0003 (9) |
| C2 | 0.0455 (13) | 0.0393 (13) | 0.0492 (13) | 0.0099 (10) | −0.0077 (11) | −0.0032 (10) |
| C3 | 0.0352 (11) | 0.0354 (11) | 0.0372 (11) | 0.0058 (9) | −0.0090 (9) | −0.0001 (9) |
| C4 | 0.0335 (11) | 0.0442 (12) | 0.0350 (11) | 0.0027 (9) | −0.0077 (9) | 0.0037 (9) |
| C5 | 0.0416 (13) | 0.0596 (15) | 0.0357 (12) | 0.0124 (11) | −0.0051 (10) | −0.0076 (11) |
| C6 | 0.0541 (15) | 0.0428 (14) | 0.0498 (14) | 0.0022 (11) | −0.0170 (12) | −0.0106 (11) |
| C7 | 0.0502 (14) | 0.0435 (13) | 0.0542 (15) | −0.0105 (11) | −0.0139 (12) | 0.0053 (11) |
| C8 | 0.0387 (13) | 0.0508 (14) | 0.0405 (12) | −0.0034 (10) | −0.0013 (10) | 0.0031 (10) |
| C9 | 0.0455 (14) | 0.0583 (15) | 0.0446 (13) | −0.0076 (12) | −0.0052 (11) | 0.0133 (11) |
| C10 | 0.0339 (12) | 0.0448 (14) | 0.0395 (12) | −0.0037 (10) | 0.0056 (9) | 0.0053 (10) |
| K1—O1i | 2.7422 (17) | O4—H4' | 1.00 (3) |
| K1—O2ii | 2.7654 (17) | C1—C2 | 1.513 (3) |
| K1—O3 | 2.7837 (18) | C2—C3 | 1.500 (3) |
| K1—O1 | 2.7912 (16) | C2—H2A | 0.9700 |
| K1—O4ii | 2.9419 (17) | C2—H2B | 0.9700 |
| K1—O3i | 2.956 (2) | C3—C8 | 1.384 (3) |
| K1—C4 | 3.260 (2) | C3—C4 | 1.396 (3) |
| K1—C5 | 3.334 (2) | C4—C5 | 1.387 (3) |
| K1—C3 | 3.344 (2) | C4—C9 | 1.503 (3) |
| K1—C6 | 3.508 (2) | C5—C6 | 1.374 (3) |
| K1—C8 | 3.511 (2) | C5—H5 | 0.9300 |
| K1—K1i | 3.5235 (10) | C6—C7 | 1.364 (4) |
| O1—C1 | 1.215 (2) | C6—H6 | 0.9300 |
| O1—K1i | 2.7422 (17) | C7—C8 | 1.376 (3) |
| O2—C1 | 1.282 (2) | C7—H7 | 0.9300 |
| O2—K1iii | 2.7654 (17) | C8—H8 | 0.9300 |
| O3—C10 | 1.210 (3) | C9—C10 | 1.515 (3) |
| O3—K1i | 2.956 (2) | C9—H9A | 0.9700 |
| O4—C10 | 1.284 (3) | C9—H9B | 0.9700 |
| O4—K1iii | 2.9420 (17) | ||
| O1i—K1—O2ii | 100.31 (5) | C8—K1—K1i | 114.41 (4) |
| O1i—K1—O3 | 70.84 (5) | C1—O1—K1i | 123.28 (14) |
| O2ii—K1—O3 | 169.83 (5) | C1—O1—K1 | 135.31 (14) |
| O1i—K1—O1 | 100.90 (5) | K1i—O1—K1 | 79.10 (5) |
| O2ii—K1—O1 | 112.58 (5) | C1—O2—K1iii | 124.52 (13) |
| O3—K1—O1 | 65.62 (6) | C10—O3—K1 | 126.51 (15) |
| O1i—K1—O4ii | 69.61 (5) | C10—O3—K1i | 117.98 (15) |
| O2ii—K1—O4ii | 73.33 (5) | K1—O3—K1i | 75.67 (5) |
| O3—K1—O4ii | 107.07 (6) | C10—O4—K1iii | 136.90 (14) |
| O1—K1—O4ii | 169.97 (5) | C10—O4—H4' | 113.6 (16) |
| O1i—K1—O3i | 63.90 (5) | K1iii—O4—H4' | 87.9 (16) |
| O2ii—K1—O3i | 66.52 (5) | O1—C1—O2 | 124.2 (2) |
| O3—K1—O3i | 104.32 (5) | O1—C1—C2 | 121.41 (19) |
| O1—K1—O3i | 67.66 (5) | O2—C1—C2 | 114.38 (18) |
| O4ii—K1—O3i | 109.28 (5) | C3—C2—C1 | 114.97 (18) |
| O1i—K1—C4 | 126.04 (6) | C3—C2—H2A | 108.5 |
| O2ii—K1—C4 | 133.04 (5) | C1—C2—H2A | 108.5 |
| O3—K1—C4 | 56.60 (5) | C3—C2—H2B | 108.5 |
| O1—K1—C4 | 69.46 (5) | C1—C2—H2B | 108.5 |
| O4ii—K1—C4 | 113.01 (5) | H2A—C2—H2B | 107.5 |
| O3i—K1—C4 | 137.12 (5) | C8—C3—C4 | 119.1 (2) |
| O1i—K1—C5 | 128.62 (6) | C8—C3—C2 | 119.2 (2) |
| O2ii—K1—C5 | 119.32 (6) | C4—C3—C2 | 121.7 (2) |
| O3—K1—C5 | 70.82 (6) | C8—C3—K1 | 85.25 (13) |
| O1—K1—C5 | 93.06 (5) | C4—C3—K1 | 74.46 (11) |
| O4ii—K1—C5 | 90.70 (5) | C2—C3—K1 | 110.62 (12) |
| O3i—K1—C5 | 159.86 (6) | C5—C4—C3 | 118.3 (2) |
| C4—K1—C5 | 24.26 (6) | C5—C4—C9 | 120.2 (2) |
| O1i—K1—C3 | 140.12 (5) | C3—C4—C9 | 121.5 (2) |
| O2ii—K1—C3 | 117.21 (5) | C5—C4—K1 | 80.87 (12) |
| O3—K1—C3 | 70.43 (5) | C3—C4—K1 | 81.18 (12) |
| O1—K1—C3 | 53.74 (5) | C9—C4—K1 | 108.22 (13) |
| O4ii—K1—C3 | 131.90 (5) | C6—C5—C4 | 121.7 (2) |
| O3i—K1—C3 | 117.95 (5) | C6—C5—K1 | 85.62 (14) |
| C4—K1—C3 | 24.36 (5) | C4—C5—K1 | 74.87 (12) |
| C5—K1—C3 | 41.93 (5) | C6—C5—H5 | 119.1 |
| O1i—K1—C6 | 144.60 (6) | C4—C5—H5 | 119.1 |
| O2ii—K1—C6 | 96.45 (6) | K1—C5—H5 | 110.3 |
| O3—K1—C6 | 93.71 (6) | C7—C6—C5 | 119.8 (2) |
| O1—K1—C6 | 101.04 (5) | C7—C6—K1 | 82.60 (14) |
| O4ii—K1—C6 | 85.95 (5) | C5—C6—K1 | 71.39 (13) |
| O3i—K1—C6 | 151.19 (6) | C7—C6—H6 | 120.1 |
| C4—K1—C6 | 41.56 (6) | C5—C6—H6 | 120.1 |
| C5—K1—C6 | 23.00 (6) | K1—C6—H6 | 116.5 |
| C3—K1—C6 | 47.66 (5) | C6—C7—C8 | 119.6 (2) |
| O1i—K1—C8 | 162.86 (5) | C6—C7—K1 | 75.30 (14) |
| O2ii—K1—C8 | 94.72 (5) | C8—C7—K1 | 75.38 (13) |
| O3—K1—C8 | 93.40 (5) | C6—C7—H7 | 120.2 |
| O1—K1—C8 | 65.34 (5) | C8—C7—H7 | 120.2 |
| O4ii—K1—C8 | 123.29 (5) | K1—C7—H7 | 120.2 |
| O3i—K1—C8 | 115.89 (5) | C7—C8—C3 | 121.5 (2) |
| C4—K1—C8 | 41.24 (5) | C7—C8—K1 | 82.34 (14) |
| C5—K1—C8 | 46.86 (6) | C3—C8—K1 | 71.62 (12) |
| C3—K1—C8 | 23.13 (5) | C7—C8—H8 | 119.3 |
| C6—K1—C8 | 39.43 (6) | C3—C8—H8 | 119.3 |
| O1i—K1—K1i | 51.07 (3) | K1—C8—H8 | 117.3 |
| O2ii—K1—K1i | 116.32 (4) | C4—C9—C10 | 113.96 (18) |
| O3—K1—K1i | 54.37 (4) | C4—C9—H9A | 108.8 |
| O1—K1—K1i | 49.84 (4) | C10—C9—H9A | 108.8 |
| O4ii—K1—K1i | 120.59 (4) | C4—C9—H9B | 108.8 |
| O3i—K1—K1i | 49.95 (3) | C10—C9—H9B | 108.8 |
| C4—K1—K1i | 100.37 (4) | H9A—C9—H9B | 107.7 |
| C5—K1—K1i | 121.87 (5) | O3—C10—O4 | 124.2 (2) |
| C3—K1—K1i | 97.39 (4) | O3—C10—C9 | 120.7 (2) |
| C6—K1—K1i | 141.83 (5) | O4—C10—C9 | 115.0 (2) |
| O1i—K1—O1—C1 | 126.9 (2) | C3—K1—C4—C9 | 120.3 (2) |
| O2ii—K1—O1—C1 | −127.0 (2) | C6—K1—C4—C9 | −147.96 (19) |
| O3—K1—O1—C1 | 63.9 (2) | C8—K1—C4—C9 | 150.69 (19) |
| O4ii—K1—O1—C1 | 108.4 (3) | K1i—K1—C4—C9 | 35.31 (16) |
| O3i—K1—O1—C1 | −177.4 (2) | C3—C4—C5—C6 | 0.2 (3) |
| C4—K1—O1—C1 | 2.3 (2) | C9—C4—C5—C6 | −179.2 (2) |
| C5—K1—O1—C1 | −3.4 (2) | K1—C4—C5—C6 | 74.9 (2) |
| C3—K1—O1—C1 | −19.0 (2) | C3—C4—C5—K1 | −74.75 (17) |
| C6—K1—O1—C1 | −25.2 (2) | C9—C4—C5—K1 | 105.83 (18) |
| C8—K1—O1—C1 | −42.4 (2) | O1i—K1—C5—C6 | 142.02 (14) |
| K1i—K1—O1—C1 | 126.9 (2) | O2ii—K1—C5—C6 | 6.69 (16) |
| O1i—K1—O1—K1i | 0.0 | O3—K1—C5—C6 | −174.26 (16) |
| O2ii—K1—O1—K1i | 106.11 (5) | O1—K1—C5—C6 | −111.41 (15) |
| O3—K1—O1—K1i | −62.98 (5) | O4ii—K1—C5—C6 | 77.89 (14) |
| O4ii—K1—O1—K1i | −18.4 (3) | O3i—K1—C5—C6 | −95.1 (2) |
| O3i—K1—O1—K1i | 55.70 (5) | C4—K1—C5—C6 | −124.5 (2) |
| C4—K1—O1—K1i | −124.58 (6) | C3—K1—C5—C6 | −92.50 (16) |
| C5—K1—O1—K1i | −130.30 (6) | C8—K1—C5—C6 | −59.92 (14) |
| C3—K1—O1—K1i | −145.89 (8) | K1i—K1—C5—C6 | −154.75 (13) |
| C6—K1—O1—K1i | −152.05 (6) | O1i—K1—C5—C4 | −93.44 (14) |
| C8—K1—O1—K1i | −169.22 (6) | O2ii—K1—C5—C4 | 131.23 (13) |
| O1i—K1—O3—C10 | −169.7 (2) | O3—K1—C5—C4 | −49.72 (14) |
| O2ii—K1—O3—C10 | −139.5 (3) | O1—K1—C5—C4 | 13.13 (14) |
| O1—K1—O3—C10 | −57.54 (19) | O4ii—K1—C5—C4 | −157.57 (14) |
| O4ii—K1—O3—C10 | 129.80 (19) | O3i—K1—C5—C4 | 29.4 (3) |
| O3i—K1—O3—C10 | −114.4 (2) | C3—K1—C5—C4 | 32.04 (12) |
| C4—K1—O3—C10 | 23.11 (18) | C6—K1—C5—C4 | 124.5 (2) |
| C5—K1—O3—C10 | 45.16 (19) | C8—K1—C5—C4 | 64.62 (13) |
| C3—K1—O3—C10 | 0.58 (19) | K1i—K1—C5—C4 | −30.21 (15) |
| C6—K1—O3—C10 | 42.9 (2) | C4—C5—C6—C7 | 0.3 (3) |
| C8—K1—O3—C10 | 3.4 (2) | K1—C5—C6—C7 | 69.5 (2) |
| K1i—K1—O3—C10 | −114.4 (2) | C4—C5—C6—K1 | −69.20 (19) |
| O1i—K1—O3—K1i | −55.29 (4) | O1i—K1—C6—C7 | 178.97 (13) |
| O2ii—K1—O3—K1i | −25.1 (3) | O2ii—K1—C6—C7 | 60.94 (15) |
| O1—K1—O3—K1i | 56.88 (4) | O3—K1—C6—C7 | −119.50 (15) |
| O4ii—K1—O3—K1i | −115.78 (5) | O1—K1—C6—C7 | −53.63 (15) |
| O3i—K1—O3—K1i | 0.0 | O4ii—K1—C6—C7 | 133.63 (15) |
| C4—K1—O3—K1i | 137.53 (7) | O3i—K1—C6—C7 | 9.7 (2) |
| C5—K1—O3—K1i | 159.58 (6) | C4—K1—C6—C7 | −94.26 (16) |
| C3—K1—O3—K1i | 115.00 (6) | C5—K1—C6—C7 | −124.9 (2) |
| C6—K1—O3—K1i | 157.33 (5) | C3—K1—C6—C7 | −60.36 (14) |
| C8—K1—O3—K1i | 117.82 (5) | C8—K1—C6—C7 | −28.65 (13) |
| K1i—O1—C1—O2 | −42.1 (3) | K1i—K1—C6—C7 | −89.04 (16) |
| K1—O1—C1—O2 | −152.13 (16) | O1i—K1—C6—C5 | −56.10 (18) |
| K1i—O1—C1—C2 | 138.33 (17) | O2ii—K1—C6—C5 | −174.13 (14) |
| K1—O1—C1—C2 | 28.3 (3) | O3—K1—C6—C5 | 5.43 (15) |
| K1iii—O2—C1—O1 | 120.5 (2) | O1—K1—C6—C5 | 71.30 (15) |
| K1iii—O2—C1—C2 | −60.0 (2) | O4ii—K1—C6—C5 | −101.44 (14) |
| O1—C1—C2—C3 | −15.3 (3) | O3i—K1—C6—C5 | 134.65 (15) |
| O2—C1—C2—C3 | 165.1 (2) | C4—K1—C6—C5 | 30.67 (13) |
| C1—C2—C3—C8 | 97.3 (2) | C3—K1—C6—C5 | 64.57 (14) |
| C1—C2—C3—C4 | −83.0 (3) | C8—K1—C6—C5 | 96.28 (16) |
| C1—C2—C3—K1 | 1.1 (2) | K1i—K1—C6—C5 | 35.89 (18) |
| O1i—K1—C3—C8 | −172.79 (12) | C5—C6—C7—C8 | −0.2 (3) |
| O2ii—K1—C3—C8 | −14.49 (15) | K1—C6—C7—C8 | 63.3 (2) |
| O3—K1—C3—C8 | 172.82 (15) | C5—C6—C7—K1 | −63.6 (2) |
| O1—K1—C3—C8 | −113.60 (15) | O1i—K1—C7—C6 | −2.6 (3) |
| O4ii—K1—C3—C8 | 77.11 (15) | O2ii—K1—C7—C6 | −119.40 (15) |
| O3i—K1—C3—C8 | −90.94 (13) | O3—K1—C7—C6 | 63.61 (15) |
| C4—K1—C3—C8 | 121.97 (19) | O1—K1—C7—C6 | 127.72 (15) |
| C5—K1—C3—C8 | 90.07 (15) | O4ii—K1—C7—C6 | −47.38 (15) |
| C6—K1—C3—C8 | 58.20 (14) | O3i—K1—C7—C6 | −173.97 (13) |
| K1i—K1—C3—C8 | −139.20 (13) | C4—K1—C7—C6 | 63.69 (15) |
| O1i—K1—C3—C4 | 65.24 (15) | C5—K1—C7—C6 | 30.06 (14) |
| O2ii—K1—C3—C4 | −136.46 (12) | C3—K1—C7—C6 | 97.57 (17) |
| O3—K1—C3—C4 | 50.85 (12) | C8—K1—C7—C6 | 126.6 (2) |
| O1—K1—C3—C4 | 124.43 (14) | K1i—K1—C7—C6 | 116.29 (14) |
| O4ii—K1—C3—C4 | −44.86 (15) | O1i—K1—C7—C8 | −129.2 (2) |
| O3i—K1—C3—C4 | 147.09 (12) | O2ii—K1—C7—C8 | 114.02 (14) |
| C5—K1—C3—C4 | −31.90 (12) | O3—K1—C7—C8 | −62.96 (15) |
| C6—K1—C3—C4 | −63.77 (13) | O1—K1—C7—C8 | 1.15 (14) |
| C8—K1—C3—C4 | −121.97 (19) | O4ii—K1—C7—C8 | −173.96 (14) |
| K1i—K1—C3—C4 | 98.82 (12) | O3i—K1—C7—C8 | 59.46 (16) |
| O1i—K1—C3—C2 | −53.34 (19) | C4—K1—C7—C8 | −62.89 (14) |
| O2ii—K1—C3—C2 | 104.95 (15) | C5—K1—C7—C8 | −96.52 (16) |
| O3—K1—C3—C2 | −67.73 (15) | C3—K1—C7—C8 | −29.00 (13) |
| O1—K1—C3—C2 | 5.85 (14) | C6—K1—C7—C8 | −126.6 (2) |
| O4ii—K1—C3—C2 | −163.45 (14) | K1i—K1—C7—C8 | −10.29 (18) |
| O3i—K1—C3—C2 | 28.50 (17) | C6—C7—C8—C3 | −0.4 (3) |
| C4—K1—C3—C2 | −118.6 (2) | K1—C7—C8—C3 | 62.90 (19) |
| C5—K1—C3—C2 | −150.48 (19) | C6—C7—C8—K1 | −63.3 (2) |
| C6—K1—C3—C2 | 177.65 (19) | C4—C3—C8—C7 | 0.9 (3) |
| C8—K1—C3—C2 | 119.4 (2) | C2—C3—C8—C7 | −179.4 (2) |
| K1i—K1—C3—C2 | −19.76 (16) | K1—C3—C8—C7 | −68.4 (2) |
| C8—C3—C4—C5 | −0.8 (3) | C4—C3—C8—K1 | 69.28 (17) |
| C2—C3—C4—C5 | 179.52 (19) | C2—C3—C8—K1 | −111.00 (18) |
| K1—C3—C4—C5 | 74.57 (17) | O1i—K1—C8—C7 | 142.7 (2) |
| C8—C3—C4—C9 | 178.6 (2) | O2ii—K1—C8—C7 | −66.03 (14) |
| C2—C3—C4—C9 | −1.1 (3) | O3—K1—C8—C7 | 120.10 (14) |
| K1—C3—C4—C9 | −106.02 (19) | O1—K1—C8—C7 | −178.74 (15) |
| C8—C3—C4—K1 | −75.34 (18) | O4ii—K1—C8—C7 | 7.10 (16) |
| C2—C3—C4—K1 | 104.94 (18) | O3i—K1—C8—C7 | −132.18 (14) |
| O1i—K1—C4—C5 | 105.32 (14) | C4—K1—C8—C7 | 94.82 (16) |
| O2ii—K1—C4—C5 | −63.79 (16) | C5—K1—C8—C7 | 60.55 (15) |
| O3—K1—C4—C5 | 120.34 (15) | C3—K1—C8—C7 | 126.9 (2) |
| O1—K1—C4—C5 | −165.98 (15) | C6—K1—C8—C7 | 28.40 (14) |
| O4ii—K1—C4—C5 | 24.49 (15) | K1i—K1—C8—C7 | 172.23 (13) |
| O3i—K1—C4—C5 | −165.60 (13) | O1i—K1—C8—C3 | 15.9 (3) |
| C3—K1—C4—C5 | −120.7 (2) | O2ii—K1—C8—C3 | 167.10 (13) |
| C6—K1—C4—C5 | −29.02 (13) | O3—K1—C8—C3 | −6.77 (14) |
| C8—K1—C4—C5 | −90.37 (15) | O1—K1—C8—C3 | 54.39 (13) |
| K1i—K1—C4—C5 | 154.26 (13) | O4ii—K1—C8—C3 | −119.77 (13) |
| O1i—K1—C4—C3 | −133.94 (12) | O3i—K1—C8—C3 | 100.94 (13) |
| O2ii—K1—C4—C3 | 56.94 (14) | C4—K1—C8—C3 | −32.06 (12) |
| O3—K1—C4—C3 | −118.93 (14) | C5—K1—C8—C3 | −66.32 (14) |
| O1—K1—C4—C3 | −45.25 (12) | C6—K1—C8—C3 | −98.48 (16) |
| O4ii—K1—C4—C3 | 145.22 (12) | K1i—K1—C8—C3 | 45.36 (14) |
| O3i—K1—C4—C3 | −44.87 (15) | C5—C4—C9—C10 | −108.5 (2) |
| C5—K1—C4—C3 | 120.7 (2) | C3—C4—C9—C10 | 72.1 (3) |
| C6—K1—C4—C3 | 91.71 (14) | K1—C4—C9—C10 | −18.6 (2) |
| C8—K1—C4—C3 | 30.37 (11) | K1—O3—C10—O4 | 134.88 (18) |
| K1i—K1—C4—C3 | −85.01 (12) | K1i—O3—C10—O4 | 42.3 (3) |
| O1i—K1—C4—C9 | −13.62 (18) | K1—O3—C10—C9 | −46.6 (3) |
| O2ii—K1—C4—C9 | 177.27 (14) | K1i—O3—C10—C9 | −139.12 (17) |
| O3—K1—C4—C9 | 1.40 (14) | K1iii—O4—C10—O3 | −116.9 (2) |
| O1—K1—C4—C9 | 75.08 (15) | K1iii—O4—C10—C9 | 64.4 (3) |
| O4ii—K1—C4—C9 | −94.45 (16) | C4—C9—C10—O3 | 42.3 (3) |
| O3i—K1—C4—C9 | 75.46 (17) | C4—C9—C10—O4 | −139.0 (2) |
| C5—K1—C4—C9 | −118.9 (2) |
| Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) x, y−1, z; (iii) x, y+1, z. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O4—H4'···O1iv | 1.01 (3) | 2.57 (3) | 3.248 (2) | 125 (2) |
| O4—H4'···O2iv | 1.01 (3) | 1.47 (3) | 2.471 (2) | 176 (3) |
| C2—H2A···O2v | 0.97 | 2.53 | 3.480 (3) | 167 |
| Symmetry codes: (iv) −x+1, −y+2, −z+1; (v) −x, −y+2, −z+1. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O4—H4'···O1i | 1.01 (3) | 2.57 (3) | 3.248 (2) | 125 (2) |
| O4—H4'···O2i | 1.01 (3) | 1.47 (3) | 2.471 (2) | 176 (3) |
| C2—H2A···O2ii | 0.97 | 2.53 | 3.480 (3) | 167 |
| Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x, −y+2, −z+1. |
This work was supported by Consejo Nacional de Ciencia y Tecnología (CONACyT) under grant No. CIAM-59213.
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Hydrogen bonding, cation-π, and π-π interactions are principal forces which determine the structure, self-assembly and recognition in many chemical and biological systems (Atwood & Steed, 2004). Cation-π interactions are now recognized as important non-covalent binding forces in biological systems (Ma & Dougherty, 1997). It has been postulated that the aromatic side chains of amino acids might determine K+ transport selectivity in transmembrane protein channels (Kumpf & Dougherty, 1993; Heginbotham et al., 1994).
In complex I each K+ ion is coordinated by six oxygen atoms from three different ligand molecules and there is a cation···π interaction (Fig.1) forming a distorted square-face monocapped prism (Fig. 2). The centroid of the aryl ring (Cg, C3—C8) is situated 3.138 Å from the K+ ion [sum of ionic and van der Waals radii K+···C(Ar) 3.37 Å]. Since the K—Carene contacts [C3—K= 3.344 (2), C4—K = 3.260 (2) and C5—K = 3.334 (2) Å] and [C6—K = 3.508 (2), C7—K = 3.596, C8—K = 3.511 (2)] the K-arene interaction can be regarded as η3-coordination. The oxygen atoms of the carboxyl and carboxylate groups are forming bridging units between two K+ cations, thus generating a one-dimensional coordination polymer, running along the b axis (Chae et al., 2004; García-Zarracino et al., 2003; García-Zarracino & Höpfl, 2004) (Fig. 2). The coordination polymer is stabilized by intramolecular O4—H4'···O2 hydrogen bonds. The crystal structure is stabilized by weak C—H···O hydogen bonds forming R22(8) motifs, (Bernstein et al., 1995; Desiraju, 2002) between adjacent coordination polymers (Fig. 3, Table 1).