2-[2-(Hydroxy­meth­yl)phen­yl]-1-(1-naphth­yl)ethanol

The mol­ecular conformation of the title compound, C₁₉H₁₈O₂, is stabilized by an intra­molecular O-H-O hydrogen bond. In addition, inter­molecular O-H-O inter­actions link the mol­ecules into zigzag chains running along the c axis.

Key indicators

• Single-crystal X-ray study
• T = 290 K
• Mean [sigma](C-C) = 0.004 Å
• R factor = 0.038
• wR factor = 0.085
• Data-to-parameter ratio = 7.3

checkCIF/PLATON results

No syntax errors found



Alert level C
PLAT089_ALERT_3_C Poor Data / Parameter Ratio (Zmax .LT. 18) .....       7.31

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           25.68
           From the CIF: _reflns_number_total               1447
           Count of symmetry unique reflns         1449
           Completeness (_total/calc)             99.86%
           TEST3: Check Friedels for noncentro structure
           Estimate of Friedel pairs measured         0
           Fraction of Friedel pairs measured     0.000
           Are heavy atom types Z>Si present         no
PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints .......          2
PLAT792_ALERT_1_G The Model has Chirality at C11     (Verify) ....          R

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

   1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   0 ALERT type 2 Indicator that the structure model may be wrong or deficient
   2 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

---

S1. Comment

The molecular conformation of the title compound is stabilized by an intramolecular O—H—O hydrogen bond. In addition, intermolecular O—H—O interactions link the molecules to zigzag chains running along the c axis.

Related literature

For related structures, see: Gałdecki et al. (1984); Hoyos-Guerrero et al. (1983); Manivel et al. (2009).

S2. Experimental

3-(naphthalen-1-yl)isocoumarin (1 eq.) was dissolved in 10 volumes of methanol, sodium borohydride (4 eq.) was added to it and stirred at 50° C under nitrogen atmosphere for 4 hrs. Then two more equivalents of NaBH₄ was further added and left overnight at 50° C for completion of the reaction. After TLC analysis, solvent methanol was removed, extracted with ethyl acetate. The ethyl acetate layer was washed with water, dried with anhydrous Na₂SO₄, evaporated to yield the title compound, which was further purified by washing with petroleum ether. Single-crystals for the structure analysis were obtained by slow evaporation of the ethanol solution.

S3. Refinement

In the absence of anomalous scatterers, 1191 Friedel pairs were merged and the absolute configuration was arbitrarily set. All H atoms were located from difference fourier maps Those bonded to C were positioned geometrically and refined using a riding model with C—H bond lengths of 0.93 Å and 0.97 Å for aromatic and for methylene H atoms, respectively, and U_iso(H) = 1.2U_eq(C). The hydroxyl H atoms were freely refined.

Computing details

Data collection: SMART (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and CAMERON (Watkin et al., 1993); software used to prepare material for publication: PLATON (Spek, 2009).

Figures

	Fig. 1. ORTEP diagram of the title compound with 50% probability displacement ellipsoids.
	Fig. 2. The crystal packing diagram. The dotted lines indicate intermolecular O—H···O hydrogen bonds.

2-[2-(Hydroxymethyl)phenyl]-1-(1-naphthyl)ethanol

Crystal data

C19H18O2	F(000) = 592
Mr = 278.33	Dx = 1.225 Mg m^−3
Monoclinic, Cc	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: C -2yc	Cell parameters from 2097 reflections
a = 16.207 (4) Å	θ = 2.7–26.3°
b = 12.820 (3) Å	µ = 0.08 mm^−1
c = 7.7888 (18) Å	T = 290 K
β = 111.172 (3)°	Needle, colorless
V = 1509.2 (6) Å^3	0.60 × 0.10 × 0.10 mm
Z = 4

Data collection

Bruker SMART CCD area-detector diffractometer	1447 independent reflections
Radiation source: fine-focus sealed tube	1216 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.039
φ and ω scans	θmax = 25.7°, θmin = 2.1°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −19→19
Tmin = 0.943, Tmax = 0.992	k = −15→15
5447 measured reflections	l = −9→9

Refinement

Refinement on F^2	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F^2 > 2σ(F^2)] = 0.038	Hydrogen site location: inferred from neighbouring sites
wR(F^2) = 0.085	H atoms treated by a mixture of independent and constrained refinement
S = 1.07	w = 1/[σ^2(Fo^2) + (0.0524P)^2] where P = (Fo^2 + 2Fc^2)/3
1447 reflections	(Δ/σ)max < 0.001
198 parameters	Δρmax = 0.15 e Å^−3
2 restraints	Δρmin = −0.14 e Å^−3

Special details

Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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.

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

	x	y	z	Uiso*/Ueq
O1	0.07843 (13)	0.13119 (13)	0.4503 (3)	0.0541 (5)
H1O	0.074 (2)	0.091 (3)	0.357 (6)	0.100 (13)*
O2	0.05537 (13)	0.04804 (13)	0.7513 (3)	0.0541 (5)
H2O	0.068 (3)	0.070 (3)	0.647 (6)	0.112 (14)*
C1	0.12467 (16)	0.27456 (16)	0.2976 (3)	0.0391 (5)
C2	0.03809 (18)	0.2984 (2)	0.2052 (4)	0.0513 (6)
H2	−0.0052	0.2669	0.2399	0.062*
C3	0.0124 (2)	0.3708 (2)	0.0562 (4)	0.0633 (8)
H3	−0.0472	0.3859	−0.0056	0.076*
C4	0.0748 (2)	0.4177 (2)	0.0047 (4)	0.0609 (8)
H4	0.0575	0.4648	−0.0926	0.073*
C5	0.2323 (3)	0.4454 (2)	0.0452 (4)	0.0681 (9)
H5	0.2157	0.4922	−0.0527	0.082*
C6	0.3193 (3)	0.4256 (2)	0.1359 (5)	0.0760 (9)
H6	0.3617	0.4597	0.1020	0.091*
C7	0.3451 (2)	0.3536 (2)	0.2810 (5)	0.0672 (8)
H7	0.4049	0.3393	0.3419	0.081*
C8	0.28404 (18)	0.30420 (19)	0.3341 (4)	0.0514 (7)
H8	0.3029	0.2566	0.4305	0.062*
C9	0.19190 (16)	0.32361 (16)	0.2457 (3)	0.0405 (5)
C10	0.16515 (18)	0.39629 (17)	0.0958 (3)	0.0476 (6)
C11	0.15080 (17)	0.19895 (15)	0.4609 (3)	0.0414 (5)
H11	0.2007	0.1563	0.4591	0.050*
C12	0.17832 (17)	0.25725 (16)	0.6467 (3)	0.0445 (6)
H12A	0.2115	0.3191	0.6400	0.053*
H12B	0.1254	0.2799	0.6668	0.053*
C13	0.23412 (17)	0.19156 (17)	0.8103 (3)	0.0415 (5)
C14	0.32550 (19)	0.1898 (2)	0.8541 (4)	0.0556 (7)
H14	0.3500	0.2320	0.7877	0.067*
C15	0.3809 (2)	0.1274 (2)	0.9933 (4)	0.0640 (8)
H15	0.4415	0.1270	1.0184	0.077*
C16	0.3454 (2)	0.0655 (2)	1.0947 (4)	0.0625 (8)
H16	0.3818	0.0223	1.1868	0.075*
C17	0.2558 (2)	0.06847 (18)	1.0582 (3)	0.0551 (7)
H17	0.2325	0.0283	1.1292	0.066*
C18	0.19887 (17)	0.13022 (15)	0.9173 (3)	0.0430 (6)
C19	0.1015 (2)	0.1264 (2)	0.8835 (4)	0.0537 (7)
H19A	0.0936	0.1123	0.9990	0.064*
H19B	0.0756	0.1940	0.8399	0.064*

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
O1	0.0811 (13)	0.0413 (9)	0.0459 (10)	−0.0112 (9)	0.0300 (9)	−0.0034 (8)
O2	0.0705 (11)	0.0446 (9)	0.0504 (10)	−0.0041 (8)	0.0259 (9)	0.0052 (8)
C1	0.0571 (15)	0.0258 (10)	0.0338 (12)	0.0073 (10)	0.0156 (11)	−0.0023 (10)
C2	0.0587 (17)	0.0462 (14)	0.0491 (15)	0.0068 (12)	0.0194 (13)	−0.0007 (12)
C3	0.0707 (18)	0.0563 (16)	0.0486 (16)	0.0238 (15)	0.0042 (14)	0.0046 (14)
C4	0.093 (2)	0.0376 (13)	0.0428 (15)	0.0156 (15)	0.0134 (15)	0.0089 (12)
C5	0.119 (3)	0.0344 (14)	0.0600 (18)	−0.0026 (16)	0.0431 (19)	0.0079 (13)
C6	0.098 (3)	0.0610 (19)	0.084 (2)	−0.0149 (18)	0.051 (2)	0.0039 (18)
C7	0.0674 (19)	0.0587 (18)	0.081 (2)	−0.0007 (14)	0.0338 (17)	0.0029 (16)
C8	0.0678 (18)	0.0395 (13)	0.0498 (16)	0.0080 (12)	0.0248 (14)	0.0057 (12)
C9	0.0617 (16)	0.0258 (10)	0.0339 (12)	0.0059 (10)	0.0172 (11)	−0.0024 (9)
C10	0.0792 (19)	0.0254 (10)	0.0388 (14)	0.0043 (11)	0.0220 (14)	−0.0010 (10)
C11	0.0572 (14)	0.0286 (10)	0.0410 (13)	0.0049 (11)	0.0210 (11)	0.0027 (10)
C12	0.0638 (17)	0.0292 (11)	0.0421 (13)	−0.0002 (11)	0.0211 (12)	0.0019 (10)
C13	0.0595 (17)	0.0294 (11)	0.0350 (12)	−0.0003 (10)	0.0162 (11)	−0.0034 (9)
C14	0.0640 (19)	0.0554 (16)	0.0471 (15)	−0.0051 (14)	0.0197 (13)	−0.0004 (13)
C15	0.0588 (17)	0.0668 (18)	0.0540 (18)	0.0036 (14)	0.0055 (14)	−0.0052 (15)
C16	0.083 (2)	0.0468 (15)	0.0401 (15)	0.0099 (14)	0.0012 (14)	0.0023 (12)
C17	0.091 (2)	0.0349 (13)	0.0390 (14)	−0.0010 (13)	0.0228 (14)	−0.0008 (11)
C18	0.0658 (17)	0.0276 (10)	0.0372 (13)	0.0008 (10)	0.0205 (12)	−0.0053 (10)
C19	0.078 (2)	0.0406 (14)	0.0529 (16)	0.0035 (12)	0.0364 (14)	0.0016 (12)

Geometric parameters (Å, º)

O1—C11	1.438 (3)	C8—H8	0.9300
O1—H1O	0.87 (4)	C9—C10	1.433 (3)
O2—C19	1.439 (3)	C11—C12	1.544 (3)
O2—H2O	0.94 (5)	C11—H11	0.9800
C1—C2	1.361 (3)	C12—C13	1.523 (3)
C1—C9	1.437 (3)	C12—H12A	0.9700
C1—C11	1.533 (3)	C12—H12B	0.9700
C2—C3	1.425 (4)	C13—C14	1.395 (4)
C2—H2	0.9300	C13—C18	1.408 (3)
C3—C4	1.356 (5)	C14—C15	1.386 (4)
C3—H3	0.9300	C14—H14	0.9300
C4—C10	1.404 (4)	C15—C16	1.382 (4)
C4—H4	0.9300	C15—H15	0.9300
C5—C6	1.353 (5)	C16—C17	1.375 (5)
C5—C10	1.430 (4)	C16—H16	0.9300
C5—H5	0.9300	C17—C18	1.397 (3)
C6—C7	1.402 (5)	C17—H17	0.9300
C6—H6	0.9300	C18—C19	1.504 (4)
C7—C8	1.358 (4)	C19—H19A	0.9700
C7—H7	0.9300	C19—H19B	0.9700
C8—C9	1.422 (4)
C11—O1—H1O	103 (3)	C1—C11—C12	111.80 (16)
C19—O2—H2O	101 (3)	O1—C11—H11	108.8
C2—C1—C9	119.7 (2)	C1—C11—H11	108.8
C2—C1—C11	120.3 (2)	C12—C11—H11	108.8
C9—C1—C11	120.0 (2)	C13—C12—C11	113.55 (17)
C1—C2—C3	121.3 (3)	C13—C12—H12A	108.9
C1—C2—H2	119.4	C11—C12—H12A	108.9
C3—C2—H2	119.4	C13—C12—H12B	108.9
C4—C3—C2	120.0 (3)	C11—C12—H12B	108.9
C4—C3—H3	120.0	H12A—C12—H12B	107.7
C2—C3—H3	120.0	C14—C13—C18	117.9 (2)
C3—C4—C10	121.1 (2)	C14—C13—C12	118.1 (2)
C3—C4—H4	119.4	C18—C13—C12	124.0 (2)
C10—C4—H4	119.4	C15—C14—C13	122.1 (3)
C6—C5—C10	121.8 (3)	C15—C14—H14	119.0
C6—C5—H5	119.1	C13—C14—H14	119.0
C10—C5—H5	119.1	C16—C15—C14	119.5 (3)
C5—C6—C7	119.7 (3)	C16—C15—H15	120.2
C5—C6—H6	120.2	C14—C15—H15	120.2
C7—C6—H6	120.2	C17—C16—C15	119.5 (3)
C8—C7—C6	120.9 (3)	C17—C16—H16	120.3
C8—C7—H7	119.5	C15—C16—H16	120.3
C6—C7—H7	119.5	C16—C17—C18	121.8 (2)
C7—C8—C9	121.6 (2)	C16—C17—H17	119.1
C7—C8—H8	119.2	C18—C17—H17	119.1
C9—C8—H8	119.2	C17—C18—C13	119.2 (2)
C8—C9—C10	117.6 (2)	C17—C18—C19	118.2 (2)
C8—C9—C1	123.9 (2)	C13—C18—C19	122.6 (2)
C10—C9—C1	118.5 (2)	O2—C19—C18	112.9 (2)
C4—C10—C5	122.2 (2)	O2—C19—H19A	109.0
C4—C10—C9	119.5 (2)	C18—C19—H19A	109.0
C5—C10—C9	118.3 (3)	O2—C19—H19B	109.0
O1—C11—C1	111.1 (2)	C18—C19—H19B	109.0
O1—C11—C12	107.45 (19)	H19A—C19—H19B	107.8
C9—C1—C2—C3	0.5 (3)	C2—C1—C11—O1	23.3 (3)
C11—C1—C2—C3	178.2 (2)	C9—C1—C11—O1	−159.00 (19)
C1—C2—C3—C4	−0.3 (4)	C2—C1—C11—C12	−96.7 (3)
C2—C3—C4—C10	0.0 (4)	C9—C1—C11—C12	81.0 (2)
C10—C5—C6—C7	1.4 (5)	O1—C11—C12—C13	78.1 (2)
C5—C6—C7—C8	−1.0 (5)	C1—C11—C12—C13	−159.79 (19)
C6—C7—C8—C9	−0.2 (4)	C11—C12—C13—C14	86.8 (3)
C7—C8—C9—C10	0.9 (3)	C11—C12—C13—C18	−91.5 (3)
C7—C8—C9—C1	−179.2 (3)	C18—C13—C14—C15	2.4 (3)
C2—C1—C9—C8	179.7 (2)	C12—C13—C14—C15	−176.0 (2)
C11—C1—C9—C8	2.1 (3)	C13—C14—C15—C16	−0.9 (4)
C2—C1—C9—C10	−0.4 (3)	C14—C15—C16—C17	−1.2 (4)
C11—C1—C9—C10	−178.10 (18)	C15—C16—C17—C18	1.9 (4)
C3—C4—C10—C5	−179.4 (3)	C16—C17—C18—C13	−0.3 (3)
C3—C4—C10—C9	0.1 (4)	C16—C17—C18—C19	178.3 (2)
C6—C5—C10—C4	178.8 (3)	C14—C13—C18—C17	−1.8 (3)
C6—C5—C10—C9	−0.7 (4)	C12—C13—C18—C17	176.5 (2)
C8—C9—C10—C4	180.0 (2)	C14—C13—C18—C19	179.7 (2)
C1—C9—C10—C4	0.2 (3)	C12—C13—C18—C19	−2.0 (3)
C8—C9—C10—C5	−0.5 (3)	C17—C18—C19—O2	−90.6 (3)
C1—C9—C10—C5	179.7 (2)	C13—C18—C19—O2	88.0 (3)

Hydrogen-bond geometry (Å, º)

D—H···A	D—H	H···A	D···A	D—H···A
O1—H1O···O2^i	0.87 (4)	1.94 (4)	2.721 (3)	148 (4)
O2—H2O···O1	0.94 (5)	1.79 (4)	2.721 (3)	169 (4)

Symmetry code: (i) x, −y, z−1/2.