(18-Crown-6)-bis­(tetra­hydro­furan)­potassium iodide

The title compound, [K(C₁₂H₂₄O₆)(C₄H₈O)₂]I, has iodide anions on crystallographic twofold rotation axes and cations in general positions. The coordination of potassium is distorted hexagonal bipyramidal, with an 18-crown-6 ligand as an equatorial belt and two axial tetra­hydro­furan ligands. Distortion is marked, consisting mainly of a significant bending of the axial arrangement [O-K-O = 148.53 (13)°] and a shortening of the two equatorial K-O bonds closest to the axial O atoms. This conformation is unprecedented in the previous reports of this cation, with almost thirty different occurrences in nearly twenty crystal structures.

Key indicators

• Single-crystal X-ray study
• T = 160 K
• Mean [sigma](C-C) = 0.008 Å
• R factor = 0.037
• wR factor = 0.081
• Data-to-parameter ratio = 16.7

checkCIF/PLATON results

No syntax errors found



Alert level B
PLAT061_ALERT_3_B Tmax/Tmin Range Test RR' too Large .............       0.72
PLAT220_ALERT_2_B Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       4.00 Ratio

Alert level C
ABSTM02_ALERT_3_C  The ratio of expected to reported Tmax/Tmin(RR') is < 0.90
            Tmin and Tmax reported:      0.290     0.460
            Tmin' and Tmax expected:      0.375     0.460
            RR' =      0.774
            Please check that your absorption correction is appropriate.
PLAT063_ALERT_3_C Crystal Probably too Large for Beam Size .......       0.66 mm
PLAT220_ALERT_2_C Large Non-Solvent    O     Ueq(max)/Ueq(min) ...       2.93 Ratio
PLAT222_ALERT_3_C Large Non-Solvent    H     Ueq(max)/Ueq(min) ...       4.00 Ratio
PLAT230_ALERT_2_C Hirshfeld Test Diff for    O8     -   C17      =       6.36 su

Alert level G
REFLT03_ALERT_4_G Please check that the estimate of the number of Friedel pairs is
            correct. If it is not, please give the correct count in the
            _publ_section_exptl_refinement section of the submitted CIF.
           From the CIF: _diffrn_reflns_theta_max           25.00
           From the CIF: _reflns_number_total               4570
           Count of symmetry unique reflns         2711
           Completeness (_total/calc)            168.57%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured      1859
           Fraction of Friedel pairs measured     0.686
           Are heavy atom types Z>Si present          yes

   0 ALERT level A = In general: serious problem
   2 ALERT level B = Potentially serious problem
   5 ALERT level C = Check and explain
   1 ALERT level G = General alerts; check

   0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   3 ALERT type 2 Indicator that the structure model may be wrong or deficient
   4 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion

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Computing details

Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2001); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and local programs.

(18-Crown-6)-bis(tetrahydrofuran)potassium iodide

Crystal data

[K(C12H24O6)(C4H8O)2]I	Dx = 1.476 Mg m^−3
Mr = 574.52	Mo Kα radiation, λ = 0.71073 Å
Tetragonal, P41212	Cell parameters from 6732 reflections
Hall symbol: P 4abw 2nw	θ = 2.8–28.6°
a = 12.2645 (15) Å	µ = 1.44 mm^−1
c = 34.372 (6) Å	T = 160 K
V = 5170.2 (13) Å^3	Square antiprism, colourless
Z = 8	0.66 × 0.62 × 0.54 mm
F(000) = 2368

Data collection

Bruker SMART 1K CCD diffractometer	4570 independent reflections
Radiation source: sealed tube	4051 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.050
Detector resolution: 8.192 pixels mm^-1	θmax = 25.0°, θmin = 1.8°
thin–slice ω scans	h = −13→14
Absorption correction: multi-scan (SADABS; Sheldrick, 2002)	k = −13→14
Tmin = 0.29, Tmax = 0.46	l = −40→39
26143 measured reflections

Refinement

Refinement on F^2	Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: full	H-atom parameters constrained
R[F^2 > 2σ(F^2)] = 0.037	w = 1/[σ^2(Fo^2) + (0.0303P)^2 + 5.4555P] where P = (Fo^2 + 2Fc^2)/3
wR(F^2) = 0.081	(Δ/σ)max = 0.001
S = 1.10	Δρmax = 0.86 e Å^−3
4570 reflections	Δρmin = −0.68 e Å^−3
273 parameters	Extinction correction: SHELXTL97, Fc^*=kFc[1+0.001xFc^2λ^3/sin(2θ)]^-1/4
0 restraints	Extinction coefficient: 0.00029 (6)
Primary atom site location: structure-invariant direct methods	Absolute structure: Flack (1983); 1862 Friedel pairs
Secondary atom site location: difference Fourier map	Absolute structure parameter: 0.00 (3)

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq
K	0.51423 (9)	0.00307 (9)	0.12559 (4)	0.0267 (2)
O1	0.6250 (3)	−0.0945 (3)	0.18612 (9)	0.0246 (7)
O2	0.7437 (2)	−0.0146 (3)	0.12204 (9)	0.0279 (8)
O3	0.6358 (3)	0.1273 (3)	0.07121 (9)	0.0282 (8)
O4	0.4039 (3)	0.1065 (3)	0.06323 (9)	0.0275 (8)
O5	0.2838 (2)	0.0288 (3)	0.12669 (8)	0.0261 (7)
O6	0.3913 (3)	−0.1190 (3)	0.17739 (8)	0.0243 (7)
C1	0.7347 (4)	−0.1262 (4)	0.17826 (14)	0.0282 (11)
H1A	0.7353	−0.1908	0.1610	0.034*
H1B	0.7718	−0.1459	0.2028	0.034*
C2	0.7933 (4)	−0.0338 (5)	0.15913 (14)	0.0310 (11)
H2A	0.7882	0.0325	0.1755	0.037*
H2B	0.8713	−0.0523	0.1557	0.037*
C3	0.8005 (4)	0.0650 (4)	0.09990 (13)	0.0285 (11)
H3A	0.8758	0.0401	0.0946	0.034*
H3B	0.8041	0.1346	0.1144	0.034*
C4	0.7399 (4)	0.0809 (4)	0.06231 (14)	0.0279 (11)
H4A	0.7813	0.1302	0.0449	0.033*
H4B	0.7304	0.0101	0.0489	0.033*
C5	0.5764 (4)	0.1529 (4)	0.03642 (13)	0.0275 (11)
H5A	0.5694	0.0869	0.0200	0.033*
H5B	0.6161	0.2090	0.0213	0.033*
C6	0.4655 (4)	0.1944 (3)	0.04722 (13)	0.0269 (10)
H6A	0.4722	0.2539	0.0666	0.032*
H6B	0.4283	0.2237	0.0239	0.032*
C7	0.2933 (4)	0.1371 (4)	0.07022 (14)	0.0265 (11)
H7A	0.2572	0.1552	0.0453	0.032*
H7B	0.2911	0.2026	0.0871	0.032*
C8	0.2349 (4)	0.0465 (4)	0.08933 (12)	0.0267 (10)
H8A	0.1568	0.0651	0.0924	0.032*
H8B	0.2404	−0.0204	0.0733	0.032*
C9	0.2280 (4)	−0.0517 (4)	0.14900 (13)	0.0268 (11)
H9A	0.2238	−0.1205	0.1340	0.032*
H9B	0.1528	−0.0268	0.1544	0.032*
C10	0.2862 (3)	−0.0712 (4)	0.18619 (13)	0.0211 (10)
H10A	0.2960	−0.0016	0.2003	0.025*
H10B	0.2433	−0.1213	0.2028	0.025*
C11	0.4508 (4)	−0.1417 (4)	0.21201 (12)	0.0255 (10)
H11A	0.4121	−0.1981	0.2274	0.031*
H11B	0.4561	−0.0749	0.2281	0.031*
C12	0.5629 (4)	−0.1814 (4)	0.20183 (13)	0.0251 (11)
H12A	0.5993	−0.2101	0.2254	0.030*
H12B	0.5577	−0.2412	0.1826	0.030*
O7	0.4837 (3)	0.1427 (3)	0.19156 (12)	0.0501 (10)
C13	0.5835 (5)	0.1881 (5)	0.20547 (17)	0.0497 (15)
H13A	0.6426	0.1333	0.2043	0.060*
H13B	0.5753	0.2128	0.2327	0.060*
C14	0.6088 (5)	0.2824 (5)	0.1795 (2)	0.0616 (19)
H14A	0.6609	0.2612	0.1589	0.074*
H14B	0.6398	0.3439	0.1945	0.074*
C15	0.4990 (5)	0.3125 (4)	0.16235 (16)	0.0468 (15)
H15A	0.4796	0.3889	0.1686	0.056*
H15B	0.4988	0.3029	0.1337	0.056*
C16	0.4224 (5)	0.2347 (4)	0.18143 (19)	0.0445 (16)
H16A	0.3897	0.2681	0.2049	0.053*
H16B	0.3630	0.2144	0.1633	0.053*
O8	0.5448 (4)	−0.2137 (4)	0.09561 (13)	0.0713 (14)
C17	0.5759 (6)	−0.2020 (7)	0.05895 (18)	0.084 (3)
H17A	0.6184	−0.2664	0.0505	0.100*
H17B	0.6225	−0.1365	0.0563	0.100*
C18	0.4770 (7)	−0.1905 (6)	0.0347 (2)	0.077 (2)
H18A	0.4864	−0.2266	0.0091	0.093*
H18B	0.4584	−0.1128	0.0305	0.093*
C19	0.3911 (5)	−0.2472 (6)	0.0588 (2)	0.067 (2)
H19A	0.3311	−0.1967	0.0656	0.080*
H19B	0.3605	−0.3108	0.0448	0.080*
C20	0.4511 (7)	−0.2817 (6)	0.0937 (2)	0.074 (2)
H20A	0.4056	−0.2725	0.1173	0.089*
H20B	0.4727	−0.3593	0.0916	0.089*
I1	0.03374 (2)	0.03374 (2)	0.0000	0.03463 (13)
I2	0.48543 (2)	0.48543 (2)	0.0000	0.03338 (13)

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
K	0.0298 (5)	0.0223 (6)	0.0281 (5)	−0.0009 (5)	−0.0017 (5)	0.0042 (3)
O1	0.0224 (17)	0.0225 (17)	0.0288 (19)	0.0043 (13)	0.0003 (14)	0.0008 (14)
O2	0.0291 (16)	0.028 (2)	0.0266 (17)	−0.0070 (14)	−0.0032 (13)	0.0020 (13)
O3	0.0275 (19)	0.032 (2)	0.0247 (18)	−0.0048 (15)	−0.0013 (15)	0.0033 (15)
O4	0.0308 (19)	0.0261 (18)	0.0257 (18)	−0.0008 (15)	−0.0007 (15)	0.0056 (15)
O5	0.0311 (16)	0.0256 (19)	0.0215 (16)	−0.0024 (15)	−0.0047 (13)	0.0044 (13)
O6	0.0276 (18)	0.0305 (19)	0.0147 (16)	0.0060 (14)	0.0024 (14)	−0.0039 (14)
C1	0.027 (3)	0.029 (3)	0.029 (3)	0.004 (2)	−0.007 (2)	0.001 (2)
C2	0.022 (2)	0.036 (3)	0.034 (3)	0.004 (2)	−0.002 (2)	0.006 (3)
C3	0.025 (3)	0.026 (3)	0.034 (3)	−0.003 (2)	0.004 (2)	−0.001 (2)
C4	0.032 (3)	0.028 (3)	0.023 (3)	−0.005 (2)	0.003 (2)	0.002 (2)
C5	0.035 (3)	0.034 (3)	0.014 (2)	−0.014 (2)	−0.006 (2)	0.001 (2)
C6	0.038 (3)	0.020 (2)	0.023 (2)	−0.005 (2)	−0.006 (2)	0.0003 (18)
C7	0.028 (3)	0.026 (3)	0.025 (3)	0.011 (2)	0.002 (2)	0.002 (2)
C8	0.030 (3)	0.028 (3)	0.022 (2)	0.006 (2)	−0.0030 (19)	−0.004 (2)
C9	0.027 (3)	0.029 (3)	0.024 (3)	−0.001 (2)	−0.0044 (19)	0.004 (2)
C10	0.021 (2)	0.019 (2)	0.023 (3)	−0.0064 (18)	0.0039 (19)	−0.0036 (19)
C11	0.033 (3)	0.028 (3)	0.015 (2)	−0.001 (2)	0.005 (2)	−0.0011 (18)
C12	0.036 (3)	0.019 (2)	0.021 (2)	0.001 (2)	−0.001 (2)	0.0011 (18)
O7	0.052 (3)	0.035 (2)	0.064 (3)	0.0006 (19)	−0.003 (2)	−0.0024 (18)
C13	0.049 (4)	0.049 (4)	0.051 (4)	−0.003 (3)	−0.013 (3)	0.008 (3)
C14	0.036 (4)	0.060 (4)	0.088 (5)	−0.010 (3)	−0.002 (3)	0.030 (4)
C15	0.059 (4)	0.049 (3)	0.033 (3)	0.007 (3)	−0.012 (3)	0.002 (2)
C16	0.036 (3)	0.028 (3)	0.069 (4)	0.004 (3)	0.000 (3)	−0.017 (3)
O8	0.097 (4)	0.057 (3)	0.060 (3)	−0.025 (3)	−0.025 (3)	0.005 (2)
C17	0.066 (5)	0.150 (8)	0.035 (4)	−0.071 (5)	0.005 (3)	−0.002 (4)
C18	0.108 (6)	0.069 (5)	0.056 (4)	−0.024 (5)	−0.039 (5)	0.022 (3)
C19	0.029 (3)	0.060 (5)	0.112 (6)	0.010 (3)	−0.003 (4)	−0.029 (4)
C20	0.103 (6)	0.058 (4)	0.063 (5)	−0.049 (4)	0.022 (5)	−0.009 (4)
I1	0.03565 (17)	0.03565 (17)	0.0326 (2)	0.00175 (18)	−0.00208 (15)	0.00208 (15)
I2	0.03099 (16)	0.03099 (16)	0.0382 (3)	−0.00381 (16)	0.00053 (13)	−0.00053 (13)

Geometric parameters (Å, º)

K—O1	2.758 (3)	C8—H8A	0.990
K—O2	2.825 (3)	C8—H8B	0.990
K—O3	2.835 (3)	C9—H9A	0.990
K—O4	2.834 (3)	C9—H9B	0.990
K—O5	2.844 (3)	C9—C10	1.483 (6)
K—O6	2.772 (3)	C10—H10A	0.990
K—O7	2.866 (4)	C10—H10B	0.990
K—O8	2.876 (5)	C11—H11A	0.990
O1—C1	1.426 (6)	C11—H11B	0.990
O1—C12	1.417 (5)	C11—C12	1.500 (7)
O2—C2	1.432 (5)	C12—H12A	0.990
O2—C3	1.420 (5)	C12—H12B	0.990
O3—C4	1.431 (6)	O7—C13	1.427 (7)
O3—C5	1.435 (5)	O7—C16	1.401 (6)
O4—C6	1.428 (5)	C13—H13A	0.990
O4—C7	1.428 (5)	C13—H13B	0.990
O5—C8	1.434 (5)	C13—C14	1.493 (8)
O5—C9	1.425 (5)	C14—H14A	0.990
O6—C10	1.448 (5)	C14—H14B	0.990
O6—C11	1.423 (5)	C14—C15	1.516 (8)
C1—H1A	0.990	C15—H15A	0.990
C1—H1B	0.990	C15—H15B	0.990
C1—C2	1.495 (7)	C15—C16	1.491 (8)
C2—H2A	0.990	C16—H16A	0.990
C2—H2B	0.990	C16—H16B	0.990
C3—H3A	0.990	O8—C17	1.324 (7)
C3—H3B	0.990	O8—C20	1.422 (8)
C3—C4	1.503 (6)	C17—H17A	0.990
C4—H4A	0.990	C17—H17B	0.990
C4—H4B	0.990	C17—C18	1.479 (9)
C5—H5A	0.990	C18—H18A	0.990
C5—H5B	0.990	C18—H18B	0.990
C5—C6	1.499 (7)	C18—C19	1.511 (10)
C6—H6A	0.990	C19—H19A	0.990
C6—H6B	0.990	C19—H19B	0.990
C7—H7A	0.990	C19—C20	1.469 (9)
C7—H7B	0.990	C20—H20A	0.990
C7—C8	1.477 (6)	C20—H20B	0.990
O1—K—O2	60.56 (9)	H7A—C7—C8	109.7
O1—K—O3	118.12 (11)	H7B—C7—C8	109.7
O1—K—O4	178.83 (11)	O5—C8—C7	108.0 (4)
O1—K—O5	121.85 (10)	O5—C8—H8A	110.1
O1—K—O6	63.21 (10)	O5—C8—H8B	110.1
O1—K—O7	74.14 (11)	C7—C8—H8A	110.1
O1—K—O8	78.75 (11)	C7—C8—H8B	110.1
O2—K—O3	59.26 (9)	H8A—C8—H8B	108.4
O2—K—O4	118.51 (10)	O5—C9—H9A	109.6
O2—K—O5	177.39 (11)	O5—C9—H9B	109.6
O2—K—O6	121.89 (10)	O5—C9—C10	110.2 (4)
O2—K—O7	102.12 (11)	H9A—C9—H9B	108.1
O2—K—O8	77.50 (12)	H9A—C9—C10	109.6
O3—K—O4	60.80 (10)	H9B—C9—C10	109.6
O3—K—O5	118.14 (10)	O6—C10—C9	108.3 (4)
O3—K—O6	178.57 (11)	O6—C10—H10A	110.0
O3—K—O7	105.61 (11)	O6—C10—H10B	110.0
O3—K—O8	101.07 (13)	C9—C10—H10A	110.0
O4—K—O5	59.06 (9)	C9—C10—H10B	110.0
O4—K—O6	117.87 (11)	H10A—C10—H10B	108.4
O4—K—O7	105.59 (11)	O6—C11—H11A	109.7
O4—K—O8	101.82 (11)	O6—C11—H11B	109.7
O5—K—O6	60.71 (9)	O6—C11—C12	109.8 (3)
O5—K—O7	78.08 (11)	H11A—C11—H11B	108.2
O5—K—O8	103.72 (13)	H11A—C11—C12	109.7
O6—K—O7	75.13 (11)	H11B—C11—C12	109.7
O6—K—O8	78.58 (12)	O1—C12—C11	109.8 (4)
O7—K—O8	148.53 (13)	O1—C12—H12A	109.7
K—O1—C1	116.1 (3)	O1—C12—H12B	109.7
K—O1—C12	110.4 (3)	C11—C12—H12A	109.7
C1—O1—C12	112.0 (3)	C11—C12—H12B	109.7
K—O2—C2	113.4 (2)	H12A—C12—H12B	108.2
K—O2—C3	117.3 (3)	K—O7—C13	112.8 (3)
C2—O2—C3	112.5 (3)	K—O7—C16	110.8 (3)
K—O3—C4	113.3 (3)	C13—O7—C16	103.2 (4)
K—O3—C5	113.6 (3)	O7—C13—H13A	110.5
C4—O3—C5	111.2 (3)	O7—C13—H13B	110.5
K—O4—C6	112.1 (3)	O7—C13—C14	106.3 (5)
K—O4—C7	116.4 (3)	H13A—C13—H13B	108.7
C6—O4—C7	111.6 (4)	H13A—C13—C14	110.5
K—O5—C8	114.9 (2)	H13B—C13—C14	110.5
K—O5—C9	114.0 (3)	C13—C14—H14A	111.0
C8—O5—C9	112.7 (3)	C13—C14—H14B	111.0
K—O6—C10	113.6 (2)	C13—C14—C15	103.6 (5)
K—O6—C11	111.3 (3)	H14A—C14—H14B	109.0
C10—O6—C11	111.2 (3)	H14A—C14—C15	111.0
O1—C1—H1A	109.8	H14B—C14—C15	111.0
O1—C1—H1B	109.8	C14—C15—H15A	111.1
O1—C1—C2	109.2 (4)	C14—C15—H15B	111.1
H1A—C1—H1B	108.3	C14—C15—C16	103.5 (4)
H1A—C1—C2	109.8	H15A—C15—H15B	109.0
H1B—C1—C2	109.8	H15A—C15—C16	111.1
O2—C2—C1	108.2 (4)	H15B—C15—C16	111.1
O2—C2—H2A	110.1	O7—C16—C15	106.6 (5)
O2—C2—H2B	110.1	O7—C16—H16A	110.4
C1—C2—H2A	110.1	O7—C16—H16B	110.4
C1—C2—H2B	110.1	C15—C16—H16A	110.4
H2A—C2—H2B	108.4	C15—C16—H16B	110.4
O2—C3—H3A	110.1	H16A—C16—H16B	108.6
O2—C3—H3B	110.1	K—O8—C17	106.2 (5)
O2—C3—C4	107.9 (4)	K—O8—C20	117.0 (4)
H3A—C3—H3B	108.4	C17—O8—C20	104.6 (5)
H3A—C3—C4	110.1	O8—C17—H17A	110.1
H3B—C3—C4	110.1	O8—C17—H17B	110.1
O3—C4—C3	108.0 (4)	O8—C17—C18	108.2 (6)
O3—C4—H4A	110.1	H17A—C17—H17B	108.4
O3—C4—H4B	110.1	H17A—C17—C18	110.1
C3—C4—H4A	110.1	H17B—C17—C18	110.1
C3—C4—H4B	110.1	C17—C18—H18A	111.3
H4A—C4—H4B	108.4	C17—C18—H18B	111.3
O3—C5—H5A	109.8	C17—C18—C19	102.6 (5)
O3—C5—H5B	109.8	H18A—C18—H18B	109.2
O3—C5—C6	109.2 (4)	H18A—C18—C19	111.3
H5A—C5—H5B	108.3	H18B—C18—C19	111.3
H5A—C5—C6	109.8	C18—C19—H19A	111.1
H5B—C5—C6	109.8	C18—C19—H19B	111.1
O4—C6—C5	108.6 (4)	C18—C19—C20	103.4 (5)
O4—C6—H6A	110.0	H19A—C19—H19B	109.0
O4—C6—H6B	110.0	H19A—C19—C20	111.1
C5—C6—H6A	110.0	H19B—C19—C20	111.1
C5—C6—H6B	110.0	O8—C20—C19	105.9 (5)
H6A—C6—H6B	108.4	O8—C20—H20A	110.6
O4—C7—H7A	109.7	O8—C20—H20B	110.6
O4—C7—H7B	109.7	C19—C20—H20A	110.6
O4—C7—C8	109.7 (4)	C19—C20—H20B	110.6
H7A—C7—H7B	108.2	H20A—C20—H20B	108.7
O6—K—O1—C12	20.0 (2)	C12—O1—C1—C2	175.9 (4)
O2—K—O1—C12	−144.7 (3)	K—O1—C1—C2	47.8 (5)
O3—K—O1—C12	−159.4 (2)	C3—O2—C2—C1	−174.2 (4)
O5—K—O1—C12	36.5 (3)	K—O2—C2—C1	49.7 (5)
O7—K—O1—C12	101.1 (3)	O1—C1—C2—O2	−64.9 (5)
O8—K—O1—C12	−62.8 (3)	C2—O2—C3—C4	−178.4 (4)
O6—K—O1—C1	148.8 (3)	K—O2—C3—C4	−44.2 (4)
O2—K—O1—C1	−15.8 (3)	C5—O3—C4—C3	175.5 (4)
O3—K—O1—C1	−30.6 (3)	K—O3—C4—C3	−55.2 (4)
O5—K—O1—C1	165.3 (3)	O2—C3—C4—O3	65.6 (5)
O7—K—O1—C1	−130.1 (3)	C4—O3—C5—C6	176.4 (4)
O8—K—O1—C1	66.0 (3)	K—O3—C5—C6	47.1 (4)
O1—K—O2—C3	−152.5 (3)	C7—O4—C6—C5	−173.6 (4)
O6—K—O2—C3	−168.6 (3)	K—O4—C6—C5	53.8 (4)
O4—K—O2—C3	26.7 (3)	O3—C5—C6—O4	−68.9 (4)
O3—K—O2—C3	12.3 (3)	C6—O4—C7—C8	−175.9 (4)
O7—K—O2—C3	−88.8 (3)	K—O4—C7—C8	−45.5 (4)
O8—K—O2—C3	123.5 (3)	C9—O5—C8—C7	175.4 (4)
O1—K—O2—C2	−18.7 (3)	K—O5—C8—C7	−51.7 (4)
O6—K—O2—C2	−34.9 (3)	O4—C7—C8—O5	64.1 (5)
O4—K—O2—C2	160.5 (3)	C8—O5—C9—C10	176.5 (4)
O3—K—O2—C2	146.1 (3)	K—O5—C9—C10	43.2 (4)
O7—K—O2—C2	45.0 (3)	C11—O6—C10—C9	−178.9 (4)
O8—K—O2—C2	−102.7 (3)	K—O6—C10—C9	54.6 (4)
O1—K—O3—C4	38.1 (3)	O5—C9—C10—O6	−65.6 (5)
O2—K—O3—C4	23.1 (3)	C10—O6—C11—C12	−174.8 (3)
O4—K—O3—C4	−142.5 (3)	K—O6—C11—C12	−47.1 (4)
O5—K—O3—C4	−157.3 (3)	C1—O1—C12—C11	176.2 (4)
O7—K—O3—C4	118.1 (3)	K—O1—C12—C11	−52.7 (4)
O8—K—O3—C4	−45.0 (3)	O6—C11—C12—O1	69.8 (4)
O1—K—O3—C5	166.2 (3)	O1—K—O7—C16	178.3 (3)
O2—K—O3—C5	151.3 (3)	O6—K—O7—C16	−115.8 (3)
O4—K—O3—C5	−14.3 (3)	O2—K—O7—C16	124.1 (3)
O5—K—O3—C5	−29.1 (3)	O4—K—O7—C16	−0.5 (3)
O7—K—O3—C5	−113.7 (3)	O3—K—O7—C16	62.9 (3)
O8—K—O3—C5	83.2 (3)	O5—K—O7—C16	−53.3 (3)
O6—K—O4—C6	159.6 (3)	O8—K—O7—C16	−150.1 (3)
O2—K—O4—C6	−35.1 (3)	O1—K—O7—C13	63.2 (3)
O3—K—O4—C6	−21.0 (3)	O6—K—O7—C13	129.0 (3)
O5—K—O4—C6	143.8 (3)	O2—K—O7—C13	8.9 (3)
O7—K—O4—C6	78.4 (3)	O4—K—O7—C13	−115.6 (3)
O8—K—O4—C6	−117.2 (3)	O3—K—O7—C13	−52.2 (3)
O6—K—O4—C7	29.4 (3)	O5—K—O7—C13	−168.4 (3)
O2—K—O4—C7	−165.3 (3)	O8—K—O7—C13	94.7 (4)
O3—K—O4—C7	−151.2 (3)	C16—O7—C13—C14	−39.1 (6)
O5—K—O4—C7	13.6 (3)	K—O7—C13—C14	80.5 (5)
O7—K—O4—C7	−51.8 (3)	O7—C13—C14—C15	22.2 (7)
O8—K—O4—C7	112.6 (3)	C13—C14—C15—C16	1.9 (7)
O1—K—O5—C9	−28.0 (3)	C13—O7—C16—C15	40.6 (6)
O6—K—O5—C9	−11.1 (3)	K—O7—C16—C15	−80.4 (4)
O4—K—O5—C9	152.9 (3)	C14—C15—C16—O7	−26.1 (6)
O3—K—O5—C9	167.9 (3)	O1—K—O8—C17	−136.0 (4)
O7—K—O5—C9	−90.6 (3)	O6—K—O8—C17	159.4 (4)
O8—K—O5—C9	57.1 (3)	O2—K—O8—C17	−74.0 (4)
O1—K—O5—C8	−160.3 (3)	O4—K—O8—C17	43.0 (4)
O6—K—O5—C8	−143.4 (3)	O3—K—O8—C17	−19.2 (4)
O4—K—O5—C8	20.6 (3)	O5—K—O8—C17	103.7 (4)
O3—K—O5—C8	35.6 (3)	O7—K—O8—C17	−166.8 (4)
O7—K—O5—C8	137.1 (3)	O1—K—O8—C20	107.8 (4)
O8—K—O5—C8	−75.1 (3)	O6—K—O8—C20	43.1 (4)
O1—K—O6—C11	14.7 (3)	O2—K—O8—C20	169.8 (4)
O2—K—O6—C11	30.4 (3)	O4—K—O8—C20	−73.3 (4)
O4—K—O6—C11	−164.8 (3)	O3—K—O8—C20	−135.4 (4)
O5—K—O6—C11	−149.2 (3)	O5—K—O8—C20	−12.6 (4)
O7—K—O6—C11	−64.8 (3)	O7—K—O8—C20	76.9 (5)
O8—K—O6—C11	97.8 (3)	C20—O8—C17—C18	39.3 (8)
O1—K—O6—C10	141.1 (3)	K—O8—C17—C18	−85.0 (6)
O2—K—O6—C10	156.9 (2)	O8—C17—C18—C19	−24.9 (9)
O4—K—O6—C10	−38.4 (3)	C17—C18—C19—C20	0.9 (8)
O5—K—O6—C10	−22.8 (2)	C17—O8—C20—C19	−38.1 (8)
O7—K—O6—C10	61.7 (3)	K—O8—C20—C19	79.0 (5)
O8—K—O6—C10	−135.8 (3)	C18—C19—C20—O8	21.3 (7)