(IUCr) Crystallography Journals Online

Abstract top

The racemic title compound, C₁₄H₂₄O₂·C₃H₆O₂, crystallizes in the monoclinic space group P2₁/c as a 1:1 diol/carboxylic acid cocrystal, A-B. The lattice incorporates infinite chains of the alcohol-carboxylic acid-alcohol supramolecular synthon, (O-HO=C(R)-O-HO-H), in which the hydrogen-bonded molecules (A-B-A)_n surround a pseudo-threefold screw axis. The carboxylic acid group functions like an extended alcohol hydroxy group. Each diol, A, takes part in two such threefold screw arrangements, leading to a hydrogen-bonded layer structure, with adjacent layers containing diol molecules of opposite handedness. The central C atom of the propano bridge is disordered over two sites of occupancies 0.75 (1) and 0.25 (1). The methyl group of the propanoic acid molecule is disordered over two sites of occupancies 0.68 (1) and 0.32 (1).

2,8-Dimethyltricyclo[5.3.1.1^3,9]dodecane-syn-2,syn-8-diol– propanoic acid (1/1) top

Crystal data top

C₁₄H₂₄O₂·C₃H₆O₂	F₀₀₀ = 656.0
M_r = 298.4	D_x = 1.17 Mg m⁻³
Monoclinic, P2₁/c	Mo Kα radiation λ = 0.71073 Å
a = 7.390 (4) Å	Cell parameters from 11 reflections
b = 13.218 (5) Å	θ = 11–12º
c = 18.469 (8) Å	µ = 0.08 mm⁻¹
β = 110.23 (2)º	T = 294 K
V = 1693 (1) Å³	Irregular, colourless
Z = 4	0.10 mm (radius)

Data collection top

Enraf–Nonius CAD-4 diffractometer	θ_max = 25º
ω/2θ scans	h = 0→8
Absorption correction: none	k = 0→15
3188 measured reflections	l = −22→22
2942 independent reflections	1 standard reflections
1786 reflections with I > 2σ(I)	every 30 min
R_int = 0.014	intensity decay: 29%

Refinement top

Refinement on F	H-atom parameters constrained
R[F² > 2σ(F²)] = 0.056	w = 1/[σ²(F) + 0.0004F²]
wR(F²) = 0.070	(Δ/σ)_max = 0.003
S = 1.32	Δρ_max = 0.39 e Å⁻³
2942 reflections	Δρ_min = −0.41 e Å⁻³
199 parameters	Extinction correction: none

Crystal data top

C₁₄H₂₄O₂·C₃H₆O₂	V = 1693 (1) Å³
M_r = 298.4	Z = 4
Monoclinic, P2₁/c	Mo Kα
a = 7.390 (4) Å	µ = 0.08 mm⁻¹
b = 13.218 (5) Å	T = 294 K
c = 18.469 (8) Å	0.10 mm (radius)
β = 110.23 (2)º

Data collection top

Enraf–Nonius CAD-4 diffractometer	R_int = 0.014
Absorption correction: none	1 standard reflections
3188 measured reflections	every 30 min
2942 independent reflections	intensity decay: 29%
1786 reflections with I > 2σ(I)

Refinement top

R[F² > 2σ(F²)] = 0.056	199 parameters
wR(F²) = 0.070	H-atom parameters constrained
S = 1.32	Δρ_max = 0.39 e Å⁻³
2942 reflections	Δρ_min = −0.41 e Å⁻³

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq	Occ. (<1)
O1	0.7617 (2)	0.2866 (1)	0.2685 (1)	0.0659 (5)
O2	0.4331 (2)	0.66382 (11)	0.16336 (9)	0.0559 (5)
C1	0.4896 (3)	0.3428 (2)	0.1636 (1)	0.0495 (6)
C2	0.7107 (3)	0.3385 (2)	0.1951 (1)	0.0496 (6)
C3	0.8088 (3)	0.4441 (2)	0.2035 (1)	0.0513 (6)
C4	0.6996 (3)	0.5155 (2)	0.1356 (1)	0.0503 (6)
C5	0.4789 (3)	0.5105 (2)	0.1032 (1)	0.0475 (6)
C6	0.3662 (3)	0.5599 (2)	0.1493 (1)	0.0472 (6)
C7	0.3899 (3)	0.5039 (2)	0.2262 (1)	0.0528 (6)
C8	0.3898 (4)	0.3878 (2)	0.2161 (1)	0.0579 (7)
C9	0.4195 (3)	0.4001 (2)	0.0871 (1)	0.0536 (6)
C10	0.7824 (4)	0.2728 (2)	0.1425 (2)	0.0718 (8)
C11	0.1519 (4)	0.5658 (2)	0.1009 (2)	0.0656 (8)
C12	0.8701 (4)	0.4943 (2)	0.2831 (2)	0.0695 (8)
C13	0.7455 (5)	0.5768 (3)	0.2979 (2)	0.067 (1)	0.75
C13'	0.7388 (9)	0.4872 (7)	0.3304 (4)	0.067 (1)	0.25
C14	0.5481 (5)	0.5443 (2)	0.2994 (1)	0.0707 (8)
O1P	0.5377 (3)	0.7775 (1)	0.0674 (1)	0.0740 (6)
O2P	0.8391 (3)	0.7734 (2)	0.1482 (1)	0.0801 (6)
C1P	0.7228 (4)	0.7995 (2)	0.0878 (2)	0.0667 (7)
C2P	0.7710 (5)	0.8619 (3)	0.0287 (2)	0.096 (1)
C3P	0.9587 (9)	0.8359 (5)	0.0180 (3)	0.119 (2)	0.68
C3'P	0.6746 (18)	0.9630 (8)	0.0220 (6)	0.119 (2)	0.32
H101	0.9031	0.2819	0.2980	0.066
H102	0.3622	0.7085	0.1882	0.056
HC1	0.4427	0.2716	0.1523	0.049
HC3	0.9335	0.4301	0.1955	0.051
H1C4	0.7466	0.5001	0.0921	0.050
H2C4	0.7357	0.5865	0.1536	0.050
HC5	0.4377	0.5454	0.0520	0.047
HC7	0.2666	0.5181	0.2354	0.053
H1C8	0.2520	0.3657	0.1953	0.058
H2C8	0.4535	0.3580	0.2686	0.058
H1C9	0.2759	0.3951	0.0636	0.054
H2C9	0.4795	0.3706	0.0509	0.054
H1C10	0.7499	0.3061	0.0909	0.072
H2C10	0.9254	0.2643	0.1660	0.072
H3C10	0.7188	0.2050	0.1360	0.072
H1C11	0.0979	0.4958	0.0894	0.066
H2C11	0.0820	0.6035	0.1301	0.066
H3C11	0.1354	0.6018	0.0514	0.066
H1C12	1.0007	0.5242	0.2929	0.069	0.75
H2C12	0.8794	0.4394	0.3215	0.069	0.75
H1'C12	0.8886	0.5679	0.2752	0.069	0.25
H2'C12	0.9963	0.4635	0.3147	0.069	0.25
H1C13	0.7237	0.6289	0.2565	0.067	0.75
H2C13	0.8185	0.6079	0.3491	0.067	0.75
H1C13'	0.8114	0.5142	0.3831	0.067	0.25
H2C13'	0.7085	0.4141	0.3342	0.067	0.25
H1C14	0.5727	0.4897	0.3391	0.071	0.75
H2C14	0.4921	0.6047	0.3166	0.071	0.75
H1'C14	0.4920	0.5456	0.3415	0.071	0.25
H2'C14	0.5785	0.6150	0.2880	0.071	0.25
H101P	0.4980	0.7344	0.1038	0.074
H1C2P	0.7770	0.9345	0.0447	0.096	0.68
H2C2P	0.6649	0.8527	−0.0221	0.096	0.68
H1'C2P	0.7236	0.8267	−0.0224	0.096	0.32
H2'C2P	0.9138	0.8713	0.0452	0.096	0.32
H1C3P	0.9777	0.8811	−0.0222	0.119	0.68
H2C3P	1.0675	0.8456	0.0679	0.119	0.68
H3C3P	0.9554	0.7638	0.0011	0.119	0.68
H1C3P'	0.7056	1.0050	−0.0172	0.119	0.32
H2C3P'	0.5318	0.9533	0.0056	0.119	0.32
H3C3P'	0.7219	0.9979	0.0732	0.119	0.32

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
O1	0.052 (1)	0.071 (1)	0.071 (1)	−0.0012 (9)	0.0151 (9)	0.0241 (9)
O2	0.060 (1)	0.046 (1)	0.068 (1)	−0.0018 (8)	0.0298 (8)	−0.0045 (8)
C1	0.049 (1)	0.041 (1)	0.059 (1)	−0.008 (1)	0.021 (1)	−0.002 (1)
C2	0.050 (1)	0.045 (1)	0.057 (1)	−0.001 (1)	0.022 (1)	0.003 (1)
C3	0.046 (1)	0.048 (1)	0.061 (2)	−0.002 (1)	0.020 (1)	0.000 (1)
C4	0.051 (1)	0.047 (1)	0.060 (2)	−0.002 (1)	0.028 (1)	0.000 (1)
C5	0.051 (1)	0.049 (1)	0.044 (1)	−0.003 (1)	0.019 (1)	0.001 (1)
C6	0.047 (1)	0.043 (1)	0.054 (1)	−0.003 (1)	0.020 (1)	−0.002 (1)
C7	0.053 (2)	0.058 (1)	0.056 (1)	0.003 (1)	0.030 (1)	0.005 (1)
C8	0.054 (2)	0.057 (2)	0.070 (2)	−0.002 (1)	0.031 (1)	0.007 (1)
C9	0.054 (2)	0.052 (1)	0.053 (2)	−0.003 (1)	0.016 (1)	−0.005 (1)
C10	0.067 (2)	0.058 (2)	0.099 (2)	0.005 (1)	0.039 (2)	−0.010 (2)
C11	0.047 (2)	0.070 (2)	0.074 (2)	0.002 (1)	0.014 (1)	0.004 (1)
C12	0.059 (2)	0.067 (2)	0.068 (2)	0.000 (1)	0.003 (1)	−0.008 (1)
C13	0.069 (2)	0.068 (2)	0.055 (2)	−0.005 (2)	0.008 (2)	−0.015 (2)
C13'	0.069 (2)	0.068 (2)	0.055 (2)	−0.005 (2)	0.008 (2)	−0.015 (2)
C14	0.087 (2)	0.077 (2)	0.049 (2)	0.002 (2)	0.025 (1)	−0.008 (1)
O1P	0.068 (1)	0.083 (1)	0.066 (1)	−0.010 (1)	0.0154 (9)	0.008 (1)
O2P	0.067 (1)	0.087 (1)	0.074 (1)	−0.013 (1)	0.008 (1)	0.011 (1)
C1P	0.073 (2)	0.058 (2)	0.067 (2)	−0.012 (2)	0.022 (2)	−0.002 (1)
C2P	0.105 (3)	0.099 (3)	0.084 (2)	−0.020 (2)	0.031 (2)	0.017 (2)
C3P	0.136 (5)	0.143 (5)	0.083 (3)	−0.002 (4)	0.046 (3)	0.024 (3)
C3'P	0.136 (5)	0.143 (5)	0.083 (3)	−0.002 (4)	0.046 (3)	0.024 (3)

Geometric parameters (Å, °) top

O1—C2	1.448 (3)	C11—H2C11	1.000
O1—H101	1.000	C11—H3C11	1.000
O2—C6	1.453 (3)	C12—C13	1.512 (4)
O2—H102	1.000	C12—C13'	1.516 (5)
C1—C2	1.535 (3)	C12—H1C12	1.000
C1—C8	1.527 (3)	C12—H2C12	1.000
C1—C9	1.527 (3)	C12—H1'C12	1.000
C1—HC1	1.000	C12—H2'C12	1.000
C2—C3	1.555 (3)	C13—C14	1.531 (4)
C2—C10	1.528 (3)	C13—H1C13	1.000
C3—C4	1.555 (3)	C13—H2C13	1.000
C3—C12	1.532 (3)	C13'—C14	1.525 (5)
C3—HC3	1.000	C13'—H1C13'	1.000
C4—C5	1.532 (3)	C13'—H2C13'	1.000
C4—H1C4	1.000	C14—H1C14	1.000
C4—H2C4	1.000	C14—H2C14	1.000
C5—C6	1.529 (3)	O1P—C1P	1.319 (3)
C5—C9	1.524 (3)	O1P—H101P	1.000
C5—HC5	1.000	O2P—C1P	1.199 (3)
C6—C7	1.556 (3)	C1P—C2P	1.506 (4)
C6—C11	1.528 (3)	C2P—C3P	1.507 (6)
C7—C8	1.547 (3)	C2P—C3'P	1.499 (8)
C7—C14	1.545 (4)	C2P—H1C2P	1.000
C7—HC7	1.000	C2P—H2C2P	1.000
C8—H1C8	1.000	C2P—H1'C2P	1.000
C8—H2C8	1.000	C2P—H2'C2P	1.000
C9—H1C9	1.000	C3P—H1C3P	1.000
C9—H2C9	1.000	C3P—H2C3P	1.000
C10—H1C10	1.000	C3P—H3C3P	1.000
C10—H2C10	1.000	C3'P—H1C3P'	1.000
C10—H3C10	1.000	C3'P—H2C3P'	1.000
C11—H1C11	1.000	C3'P—H3C3P'	1.000

C2—O1—H101	115.1	C6—C11—H1C11	109.5
C6—O2—H102	116.1	C6—C11—H2C11	109.5
C2—C1—C8	117.3 (2)	C6—C11—H3C11	109.5
C2—C1—C9	110.2 (2)	H1C11—C11—H2C11	109.5
C2—C1—HC1	106.9	H1C11—C11—H3C11	109.5
C8—C1—C9	108.1 (2)	H2C11—C11—H3C11	109.5
C8—C1—HC1	106.9	C3—C12—C13	119.4 (2)
C9—C1—HC1	106.9	C3—C12—C13'	119.4 (4)
O1—C2—C1	105.7 (2)	C3—C12—H1C12	106.9
O1—C2—C3	111.7 (2)	C3—C12—H2C12	106.9
O1—C2—C10	106.9 (2)	C3—C12—H1'C12	106.9
C1—C2—C3	113.8 (2)	C3—C12—H2'C12	106.9
C1—C2—C10	109.8 (2)	C13—C12—H1C12	106.9
C3—C2—C10	108.8 (2)	C13—C12—H2C12	106.9
C2—C3—C4	111.7 (2)	C13'—C12—H1'C12	106.9
C2—C3—C12	117.2 (2)	C13'—C12—H2'C12	106.9
C2—C3—HC3	103.9	H1C12—C12—H2C12	109.5
C4—C3—C12	114.2 (2)	H1'C12—C12—H2'C12	109.5
C4—C3—HC3	103.9	C12—C13—C14	116.4 (3)
C12—C3—HC3	103.9	C12—C13—H1C13	107.7
C3—C4—C5	118.3 (2)	C12—C13—H2C13	107.7
C3—C4—H1C4	107.2	C14—C13—H1C13	107.7
C3—C4—H2C4	107.2	C14—C13—H2C13	107.7
C5—C4—H1C4	107.2	H1C13—C13—H2C13	109.5
C5—C4—H2C4	107.2	C12—C13'—C14	116.5 (4)
H1C4—C4—H2C4	109.5	C12—C13'—H1C13'	107.7
C4—C5—C6	118.4 (2)	C12—C13'—H2C13'	107.7
C4—C5—C9	108.3 (2)	C14—C13'—H1C13'	107.7
C4—C5—HC5	106.5	C14—C13'—H2C13'	107.7
C6—C5—C9	110.0 (2)	H1C13'—C13'—H2C13'	109.5
C6—C5—HC5	106.5	C7—C14—C13	121.3 (2)
C9—C5—HC5	106.5	C7—C14—C13'	118.6 (4)
O2—C6—C5	106.6 (2)	C7—C14—H1C14	106.4
O2—C6—C7	111.3 (2)	C7—C14—H2C14	106.4
O2—C6—C11	106.0 (2)	C13—C14—H1C14	106.4
C5—C6—C7	113.3 (2)	C13—C14—H2C14	106.4
C5—C6—C11	110.5 (2)	H1C14—C14—H2C14	109.5
C7—C6—C11	109.0 (2)	C1P—O1P—H101P	116.7
C6—C7—C8	111.5 (2)	O1P—C1P—O2P	122.8 (3)
C6—C7—C14	116.5 (2)	O1P—C1P—C2P	113.2 (3)
C6—C7—HC7	104.2	O2P—C1P—C2P	124.0 (3)
C8—C7—C14	114.6 (2)	C1P—C2P—C3P	115.4 (3)
C8—C7—HC7	104.2	C1P—C2P—C3'P	108.8 (5)
C14—C7—HC7	104.2	C1P—C2P—H1C2P	108.0
C1—C8—C7	118.9 (2)	C1P—C2P—H2C2P	108.0
C1—C8—H1C8	107.1	C1P—C2P—H1'C2P	109.6
C1—C8—H2C8	107.1	C1P—C2P—H2'C2P	109.6
C7—C8—H1C8	107.1	H1C2P—C2P—H2C2P	109.5
C7—C8—H2C8	107.1	H1'C2P—C2P—H2'C2P	109.5
H1C8—C8—H2C8	109.5	C2P—C3P—H1C3P	109.5
C1—C9—C5	108.2 (2)	C2P—C3P—H2C3P	109.5
C1—C9—H1C9	109.8	C2P—C3P—H3C3P	109.5
C1—C9—H2C9	109.8	H1C3P—C3P—H2C3P	109.5
C5—C9—H1C9	109.8	H1C3P—C3P—H3C3P	109.5
C5—C9—H2C9	109.8	H2C3P—C3P—H3C3P	109.5
H1C9—C9—H2C9	109.5	C2P—C3'P—H1C3P'	109.5
C2—C10—H1C10	109.5	C2P—C3'P—H2C3P'	109.5
C2—C10—H2C10	109.5	C2P—C3'P—H3C3P'	109.5
C2—C10—H3C10	109.5	H1C3P'—C3'P—H2C3P'	109.5
H1C10—C10—H2C10	109.5	H1C3P'—C3'P—H3C3P'	109.5
H1C10—C10—H3C10	109.5	H2C3P'—C3'P—H3C3P'	109.5
H2C10—C10—H3C10	109.5

Hydrogen-bond geometry (Å, °) top

D—H···A	D—H	H···A	D···A	D—H···A
O1—H101···O2Pⁱ	1.00	1.82	2.822 (3)	180
O2—H102···O1ⁱⁱ	1.00	1.75	2.746 (3)	180
O1P—H101P···O2	1.00	1.64	2.635 (3)	180

Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) −x+1, y+1/2, −z+1/2.

Table 1
Hydrogen-bond geometry (Å, °) top

D—H···A	D—H	H···A	D···A	D—H···A
O1—H101···O2Pⁱ	1.00	1.82	2.822 (3)	180
O2—H102···O1ⁱⁱ	1.00	1.75	2.746 (3)	180
O1P—H101P···O2	1.00	1.64	2.635 (3)	180

Symmetry codes: (i) −x+2, y−1/2, −z+1/2; (ii) −x+1, y+1/2, −z+1/2.

supplementary materials

2,8-Dimethyltricyclo[5.3.1.1^3,9]dodecane-syn-2,syn-8-diol-propanoic acid (1/1)

Y. Mizobe, R. Bishop, D. C. Craig and M. L. Scudder

	Fig. 1. Molecular structure of the A and B components of the title compound, with ellipsoids drawn at the 30% probability level.
	Fig. 2. One layer of the structure showing the intermolecular hydrogen bonding linking A and B molecules in chains. C atoms of the propanoic acid are coloured pink.
	Fig. 3. The orthogonal view showing the pseudo 3₁ symmetric nature of the arrangement in two adjacent layers. C atoms of the propanoic acid are coloured pink.

supplementary materials

2,8-Dimethyltricyclo[5.3.1.13,9]dodecane-syn-2,syn-8-diol-propanoic acid (1/1)

Y. Mizobe, R. Bishop, D. C. Craig and M. L. Scudder

2,8-Dimethyltricyclo[5.3.1.1^3,9]dodecane-syn-2,syn-8-diol-propanoic acid (1/1)