Chloro[N,N'-o-phenylenebis(pyridine-2-carbox­amido)]­cobalt(III) chloro­form disolvate

The title compound, [C(bpb)(Cl)(pyridine)]·2CHCl₃ [bpbH₂ is N,N'-o-phenylenebis(pyridine-2-carbox­amide), C₁₈H₁₂N₄O₂], was obtained directly from [Co(bpb)(OO^tBu)(pyridine)] upon storage in freshly distilled CHCl₃. The structure of this octahedral cobalt(III) complex reveals two chloro­form mol­ecules of solvation that form hydrogen bonds to the O atoms of the carbox­amide group of the bpb^2- ligand.

Key indicators

• Single-crystal X-ray study
• T = 130 K
• Mean [sigma](C-C) = 0.019 Å
• R factor = 0.099
• wR factor = 0.299
• Data-to-parameter ratio = 10.5

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry


 Alert Level A:



THETM_01  Alert A The value of sine(theta_max)/wavelength is less than 0.550
          Calculated sin(theta_max)/wavelength =    0.5419

Author response: The value of sine(theta_max)/wavelength is 0.542 due to instrument limitations.

 Alert Level C:



RFACR_01  Alert C The value of the weighted R factor is > 0.25
          Weighted R factor given   0.299

PLAT_213  Alert C Atom  Co     has ADP max/min Ratio ...........       3.10

PLAT_213  Alert C Atom  N3     has ADP max/min Ratio ...........       3.10

PLAT_213  Alert C Atom  C13    has ADP max/min Ratio ...........       3.10


 1 Alert Level A = Potentially serious problem

 0 Alert Level B = Potential problem

 4 Alert Level C = Please check

---

S1. Comment

When the complex [Co(bpb)(OO^tBu)(pyridine)] was stored for a brief amount of time in CHCl₃ at room temperature, the title compound [Co(bpb)(Cl)(pyridine)], (I), crystallized out as yellow plates. The mechanism for the incorporation of the chloride ion into the cobalt(III) complex remains unknown at this time, although it is clear that the source of the chloride ion is the solvent CHCl₃. The mechanism of decomposition of various cobalt(III) alkylperoxides in many solvents has been discussed by Chavez et al. (1998). The decomposition of Co(bpb)(OO^tBu)(pyridine) may proceed through a similar reaction pathway.

Since the initial report by Chapman & Vagg (1979), the ligand N,N'-bis(2'-pyridinecarboxamide)-1,2-benzene (bpbH₂) has been extensively employed as a tetradentate diamide ligand for various transition metal ions. This ligand was designed exclusively to investigate the unique bonding properties of deprotonated carboxamido N atoms toward Mⁿ⁺ ions. The square-planar cobalt(II) complex [Co(bpb)]^.H₂O was reported in the initial account by Chapman & Vagg (1979). Later, bpbH₂ was utilized by Saussine et al. (1985) to stabilize the cobalt(III) alkylperoxide complex [Co(bpb)(OO^tBu)(4-Mepy)] (4-Mepy = 4-methylpyridine). Although this cobalt(III) alkylperoxide complex was not structurally characterized by X-ray diffraction, its activity as a catalyst for the oxidation of various hydrocarbon substrates in the presence of excess alkyhydroperoxide was investigated in detail. The role of cobalt(III) alkylperoxide complexes in the oxidation of hydrocarbons has recently been highlighted in a review by Chavez & Mascharak (2000).

The structure of [Co(bpb)(Cl)(pyridine)] is presented in Fig. 1. The cobalt(III) center resides in an octahedral geometry with the bpb^2- ligand occupying the equatorial plane of the octahedron. The remaining coordination sites are occupied by one chloride and one pyridine ligand. The Co—N(amido) ditances are similar in length [Co—N2, 1.890 (9) Å, Co—N3, 1.879 (9) Å] while the Co—N(py) distances are 1.980 (10) Å and 2.000 (11) Å. The single pyridine is coordinated to the cobalt(III) center at a distance of 1.978 (10) Å. The Co—Cl distance [2.251 (4) Å] is well within the range of Co^III—Cl distances. For example, the Co—Cl bond distances in [Co(NH₃)₅(Cl)]Cl₂ and [Co(Metrenen)(Cl)](ClO₄)₂ are 2.286 (2) and 2.248 (5) Å, respectively (Messmer & Amma, 1968; Buckingham et al., 1972). As expected, the bpb^2- ligand frame remains completely planar in the complex. The structure reveals (Table 2) two CHCl₃ molecules of solvation which form weak hydrogen bonds with the carbonyl-O atoms of the bpb^2- ligand.

S2. Experimental

[Co(bpb)(OO^tBu)(pyridine)] was synthesized by following the procedure outlined by Saussine et al. (1985); pyridine was used in place of 4-methylpyridine. Single crystals of [Co(bpb)(Cl)(pyridine)] were obtained directly from [Co(bpb)(OO^tBu)(pyridine)] when the parent compound was dissolved in freshly distilled CHCl₃ and the solution was stored for a period of approx 20 min.

Computing details

Data collection: P3/P4-PC (Siemens, 1991); cell refinement: P3/P4-PC; data reduction: XDISK (Siemens, 1991); program(s) used to solve structure: SHELXS97 (Sheldrick, 1990); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL XP (Sheldrick, 1994); software used to prepare material for publication: SHELXL97.

Figures

Fig. 1. The molecular structure of [Co(bpb)(Cl)(pyridine)] showing the atom labeling scheme. Displacement ellipsoids are shown at the 35% probability level. H atoms have been omitted for clarity except on the two molecules of CHCl3.

(chloroN,N'-bis(2'-pyridinecarboxamido)pyridinecobalt(III) 2-chloroform solvate

Crystal data

C23H17ClCoN5O2·2CHCl3	Z = 2
Mr = 728.53	F(000) = 732
Triclinic, P1	Dx = 1.669 Mg m^−3
a = 8.374 (5) Å	Cu Kα radiation, λ = 1.54178 Å
b = 12.762 (10) Å	Cell parameters from 45 reflections
c = 14.381 (9) Å	θ = 8–25°
α = 98.08 (6)°	µ = 10.87 mm^−1
β = 90.12 (5)°	T = 130 K
γ = 107.44 (5)°	Plate, yellow
V = 1450.1 (17) Å^3	0.52 × 0.16 × 0.01 mm

Data collection

Siemens P4 diffractometer	2389 reflections with I > 2σ(I)
Radiation source: Siemens rotating-anode	Rint = 0.075
Nickel filter monochromator	θmax = 56.7°, θmin = 3.1°
2θ–ω scans	h = −9→9
Absorption correction: empirical (using intensity measurements) (XABS2, Parkin et al., 1995)	k = −13→13
Tmin = 0.070, Tmax = 0.899	l = 0→15
3802 measured reflections	2 standard reflections every 198 reflections
3802 independent reflections	intensity decay: <2.0%

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)] = 0.099	Hydrogen site location: inferred from neighbouring sites
wR(F^2) = 0.299	H-atom parameters constrained
S = 1.03	w = 1/[σ^2(Fo^2) + (0.1923P)^2 + 3.7422P] where P = (Fo^2 + 2Fc^2)/3
3802 reflections	(Δ/σ)max = 0.002
361 parameters	Δρmax = 1.09 e Å^−3
180 restraints	Δρmin = −1.01 e Å^−3

Special details

Experimental. Selected IR frequencies (KBr disk, cm^-1): 3422 (s), 1630 (s), 1598 (s), 1571 (m), 1475 (m), 1388 (m), 1292 (w), 1153 (w), 759 (m), 680 (m), 518 (w).

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.

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

	x	y	z	Uiso*/Ueq
Co	0.1672 (2)	0.52429 (17)	0.70291 (12)	0.0281 (6)
Cl1	0.2222 (3)	0.4175 (3)	0.57623 (18)	0.0348 (8)
O1	−0.0149 (10)	0.2395 (8)	0.8033 (6)	0.040 (2)
O2	0.6467 (10)	0.7136 (7)	0.7331 (6)	0.039 (2)
N1	−0.0760 (12)	0.4480 (9)	0.6802 (6)	0.030 (2)
N2	0.1554 (12)	0.4084 (8)	0.7737 (6)	0.026 (2)
N3	0.3941 (11)	0.5756 (8)	0.7442 (6)	0.028 (2)
N4	0.2348 (11)	0.6530 (9)	0.6313 (6)	0.029 (2)
N5	0.1084 (12)	0.6176 (9)	0.8111 (6)	0.032 (2)
C1	−0.1968 (14)	0.4766 (11)	0.6364 (8)	0.029 (3)
H1	−0.1666	0.5441	0.6105	0.035*
C2	−0.3596 (15)	0.4124 (11)	0.6280 (9)	0.037 (3)
H2	−0.4408	0.4359	0.5976	0.045*
C3	−0.4082 (15)	0.3117 (12)	0.6641 (9)	0.039 (3)
H3	−0.5205	0.2641	0.6569	0.047*
C4	−0.2840 (16)	0.2852 (12)	0.7107 (9)	0.040 (3)
H4	−0.3125	0.2193	0.7387	0.048*
C5	−0.1236 (13)	0.3510 (10)	0.7173 (7)	0.024 (3)
C6	0.0157 (15)	0.3273 (11)	0.7694 (8)	0.033 (3)
C7	0.3129 (15)	0.4166 (11)	0.8165 (8)	0.031 (3)
C8	0.3423 (16)	0.3412 (11)	0.8698 (8)	0.036 (3)
H8	0.2549	0.2758	0.8771	0.044*
C9	0.5013 (16)	0.3619 (11)	0.9128 (8)	0.035 (3)
H9	0.5226	0.3108	0.9495	0.042*
C10	0.6293 (16)	0.4596 (12)	0.9008 (9)	0.038 (3)
H10	0.7372	0.4740	0.9299	0.046*
C11	0.6001 (15)	0.5340 (11)	0.8477 (8)	0.035 (3)
H11	0.6856	0.6007	0.8414	0.042*
C12	0.4417 (14)	0.5095 (10)	0.8030 (8)	0.029 (3)
C13	0.4931 (15)	0.6676 (11)	0.7152 (8)	0.030 (3)
C14	0.3991 (15)	0.7114 (12)	0.6526 (9)	0.039 (3)
C15	0.4713 (17)	0.8052 (11)	0.6127 (9)	0.038 (3)
H15	0.5860	0.8454	0.6270	0.046*
C16	0.3784 (16)	0.8415 (12)	0.5518 (9)	0.041 (3)
H16	0.4270	0.9083	0.5267	0.049*
C17	0.2141 (16)	0.7792 (11)	0.5282 (8)	0.033 (3)
H17	0.1484	0.8008	0.4850	0.040*
C18	0.1481 (15)	0.6849 (11)	0.5690 (7)	0.030 (3)
H18	0.0359	0.6409	0.5519	0.036*
C19	0.1409 (15)	0.6083 (11)	0.9022 (8)	0.037 (3)
H19	0.1929	0.5544	0.9139	0.045*
C20	0.1022 (15)	0.6727 (11)	0.9768 (8)	0.035 (3)
H20	0.1251	0.6624	1.0390	0.042*
C21	0.0312 (15)	0.7511 (11)	0.9623 (8)	0.036 (3)
H21	0.0037	0.7961	1.0143	0.043*
C22	−0.0017 (14)	0.7660 (11)	0.8718 (8)	0.036 (3)
H22	−0.0510	0.8213	0.8601	0.043*
C23	0.0396 (14)	0.6980 (10)	0.7992 (8)	0.029 (3)
H23	0.0182	0.7082	0.7367	0.035*
C24	0.1005 (18)	0.0457 (13)	0.6934 (11)	0.054 (4)
H24	0.0536	0.0969	0.7362	0.064*
Cl2	0.1501 (5)	0.1012 (4)	0.5887 (3)	0.0734 (14)
Cl3	0.2805 (5)	0.0364 (3)	0.7491 (2)	0.0588 (11)
Cl4	−0.0525 (4)	−0.0854 (3)	0.6714 (2)	0.0514 (10)
C25	0.6529 (15)	0.9103 (11)	0.8887 (9)	0.035 (3)
H25	0.6842	0.8539	0.8430	0.043*
Cl5	0.4354 (4)	0.8709 (4)	0.8949 (3)	0.0640 (12)
Cl6	0.7282 (5)	1.0403 (3)	0.8512 (2)	0.0620 (12)
Cl7	0.7483 (5)	0.9173 (4)	1.0009 (2)	0.0627 (12)

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Co	0.0206 (11)	0.0509 (14)	0.0117 (10)	0.0111 (9)	−0.0089 (8)	0.0012 (8)
Cl1	0.0242 (15)	0.059 (2)	0.0185 (15)	0.0107 (14)	−0.0080 (12)	0.0025 (13)
O1	0.032 (5)	0.042 (6)	0.036 (5)	0.000 (4)	−0.008 (4)	0.005 (4)
O2	0.023 (5)	0.050 (6)	0.034 (5)	0.002 (4)	−0.016 (4)	−0.003 (4)
N1	0.025 (5)	0.046 (6)	0.016 (4)	0.011 (4)	−0.009 (4)	−0.004 (4)
N2	0.033 (5)	0.036 (5)	0.012 (4)	0.016 (4)	−0.006 (4)	0.003 (4)
N3	0.025 (5)	0.036 (5)	0.016 (4)	0.001 (4)	−0.015 (4)	−0.001 (4)
N4	0.025 (5)	0.048 (6)	0.010 (4)	0.005 (4)	−0.004 (4)	−0.001 (4)
N5	0.029 (5)	0.050 (6)	0.016 (5)	0.009 (5)	−0.008 (4)	0.007 (4)
C1	0.029 (6)	0.036 (6)	0.021 (5)	0.005 (5)	0.004 (5)	0.008 (5)
C2	0.026 (6)	0.049 (7)	0.034 (6)	0.012 (5)	−0.009 (5)	−0.003 (5)
C3	0.017 (5)	0.052 (7)	0.040 (6)	0.003 (5)	−0.001 (5)	−0.003 (5)
C4	0.037 (6)	0.052 (7)	0.034 (6)	0.020 (6)	0.005 (5)	0.002 (5)
C5	0.017 (5)	0.030 (6)	0.019 (5)	0.000 (5)	−0.009 (4)	−0.004 (4)
C6	0.025 (6)	0.040 (7)	0.028 (6)	0.006 (5)	0.002 (5)	−0.001 (5)
C7	0.028 (6)	0.046 (7)	0.021 (5)	0.013 (5)	−0.005 (5)	0.009 (5)
C8	0.036 (6)	0.045 (7)	0.027 (6)	0.011 (5)	−0.001 (5)	0.002 (5)
C9	0.042 (6)	0.046 (7)	0.026 (6)	0.026 (6)	−0.009 (5)	0.005 (5)
C10	0.029 (6)	0.059 (7)	0.031 (6)	0.021 (6)	−0.007 (5)	0.005 (5)
C11	0.030 (6)	0.046 (7)	0.028 (6)	0.012 (5)	−0.011 (5)	0.000 (5)
C12	0.026 (6)	0.039 (6)	0.022 (5)	0.011 (5)	−0.006 (5)	0.005 (5)
C13	0.028 (6)	0.043 (7)	0.015 (5)	0.012 (5)	−0.014 (5)	−0.010 (5)
C14	0.023 (6)	0.047 (7)	0.038 (6)	0.003 (5)	−0.003 (5)	−0.002 (5)
C15	0.035 (6)	0.037 (7)	0.039 (6)	0.005 (5)	−0.009 (5)	0.006 (5)
C16	0.041 (7)	0.044 (7)	0.037 (6)	0.007 (6)	−0.005 (5)	0.015 (5)
C17	0.041 (6)	0.038 (6)	0.023 (6)	0.014 (5)	−0.009 (5)	0.005 (5)
C18	0.028 (6)	0.046 (7)	0.015 (5)	0.009 (5)	−0.014 (5)	0.001 (5)
C19	0.034 (6)	0.051 (7)	0.028 (6)	0.012 (5)	−0.007 (5)	0.009 (5)
C20	0.032 (6)	0.052 (7)	0.022 (6)	0.016 (5)	−0.007 (5)	0.003 (5)
C21	0.026 (6)	0.050 (7)	0.024 (6)	0.002 (5)	−0.003 (5)	0.005 (5)
C22	0.025 (6)	0.053 (7)	0.027 (6)	0.012 (5)	−0.009 (5)	−0.003 (5)
C23	0.025 (6)	0.042 (6)	0.018 (5)	0.007 (5)	−0.009 (5)	−0.001 (5)
C24	0.050 (7)	0.059 (8)	0.055 (7)	0.019 (6)	−0.003 (6)	0.014 (6)
Cl2	0.063 (3)	0.092 (3)	0.050 (2)	−0.008 (2)	−0.026 (2)	0.029 (2)
Cl3	0.055 (2)	0.076 (3)	0.046 (2)	0.021 (2)	−0.0265 (18)	0.0033 (18)
Cl4	0.045 (2)	0.057 (2)	0.049 (2)	0.0117 (18)	−0.0047 (16)	0.0072 (17)
C25	0.034 (6)	0.037 (6)	0.033 (6)	0.007 (5)	−0.007 (5)	0.008 (5)
Cl5	0.033 (2)	0.071 (3)	0.078 (3)	0.0089 (19)	−0.0001 (18)	−0.008 (2)
Cl6	0.078 (3)	0.054 (3)	0.037 (2)	−0.002 (2)	−0.0026 (19)	0.0027 (16)
Cl7	0.075 (3)	0.087 (3)	0.035 (2)	0.042 (2)	−0.0150 (18)	0.0011 (18)

Geometric parameters (Å, º)

Co—N3	1.879 (9)	C9—H9	0.950
Co—N2	1.890 (9)	C10—C11	1.374 (18)
Co—N5	1.978 (10)	C10—H10	0.950
Co—N1	1.980 (10)	C11—C12	1.401 (16)
Co—N4	2.000 (11)	C11—H11	0.950
Co—Cl1	2.252 (4)	C13—C14	1.465 (19)
O1—C6	1.242 (15)	C14—C15	1.373 (19)
O2—C13	1.252 (14)	C15—C16	1.383 (18)
N1—C1	1.356 (15)	C15—H15	0.950
N1—C5	1.366 (15)	C16—C17	1.381 (17)
N2—C6	1.304 (15)	C16—H16	0.950
N2—C7	1.423 (15)	C17—C18	1.378 (17)
N3—C13	1.340 (16)	C17—H17	0.950
N3—C12	1.409 (16)	C18—H18	0.950
N4—C18	1.332 (15)	C19—C20	1.358 (17)
N4—C14	1.365 (15)	C19—H19	0.950
N5—C23	1.349 (16)	C20—C21	1.346 (18)
N5—C19	1.365 (15)	C20—H20	0.950
C1—C2	1.359 (17)	C21—C22	1.380 (17)
C1—H1	0.950	C21—H21	0.950
C2—C3	1.400 (19)	C22—C23	1.374 (17)
C2—H2	0.950	C22—H22	0.950
C3—C4	1.385 (18)	C23—H23	0.950
C3—H3	0.950	C24—Cl2	1.750 (15)
C4—C5	1.349 (17)	C24—Cl3	1.749 (15)
C4—H4	0.950	C24—Cl4	1.762 (16)
C5—C6	1.511 (17)	C24—H24	1.000
C7—C12	1.381 (17)	C25—Cl5	1.744 (13)
C7—C8	1.386 (18)	C25—Cl6	1.751 (13)
C8—C9	1.402 (17)	C25—Cl7	1.778 (12)
C8—H8	0.950	C25—H25	1.000
C9—C10	1.412 (19)
N3—Co—N2	84.6 (4)	C10—C9—H9	120.4
N3—Co—N5	90.9 (4)	C11—C10—C9	121.0 (12)
N2—Co—N5	92.4 (4)	C11—C10—H10	119.5
N3—Co—N1	167.4 (4)	C9—C10—H10	119.5
N2—Co—N1	83.0 (4)	C10—C11—C12	118.7 (12)
N5—Co—N1	87.2 (4)	C10—C11—H11	120.7
N3—Co—N4	83.0 (4)	C12—C11—H11	120.7
N2—Co—N4	167.2 (4)	C7—C12—C11	121.3 (11)
N5—Co—N4	91.1 (4)	C7—C12—N3	113.3 (10)
N1—Co—N4	109.5 (4)	C11—C12—N3	125.4 (12)
N3—Co—Cl1	91.7 (3)	O2—C13—N3	128.4 (11)
N2—Co—Cl1	88.7 (3)	O2—C13—C14	120.7 (12)
N5—Co—Cl1	177.2 (3)	N3—C13—C14	110.9 (10)
N1—Co—Cl1	90.4 (3)	N4—C14—C15	119.7 (12)
N4—Co—Cl1	88.3 (3)	N4—C14—C13	117.5 (12)
C1—N1—C5	117.5 (10)	C15—C14—C13	122.7 (11)
C1—N1—Co	131.1 (9)	C14—C15—C16	120.6 (12)
C5—N1—Co	111.4 (7)	C14—C15—H15	119.7
C6—N2—C7	128.4 (11)	C16—C15—H15	119.7
C6—N2—Co	118.4 (8)	C17—C16—C15	119.0 (13)
C7—N2—Co	112.8 (8)	C17—C16—H16	120.5
C13—N3—C12	126.9 (10)	C15—C16—H16	120.5
C13—N3—Co	118.6 (8)	C18—C17—C16	118.2 (11)
C12—N3—Co	114.5 (8)	C18—C17—H17	120.9
C18—N4—C14	119.5 (11)	C16—C17—H17	120.9
C18—N4—Co	130.7 (8)	N4—C18—C17	122.8 (11)
C14—N4—Co	109.8 (8)	N4—C18—H18	118.6
C23—N5—C19	115.6 (10)	C17—C18—H18	118.6
C23—N5—Co	121.7 (7)	C20—C19—N5	122.9 (12)
C19—N5—Co	122.6 (9)	C20—C19—H19	118.5
N1—C1—C2	122.4 (12)	N5—C19—H19	118.5
N1—C1—H1	118.8	C21—C20—C19	119.8 (12)
C2—C1—H1	118.8	C21—C20—H20	120.1
C1—C2—C3	120.4 (12)	C19—C20—H20	120.1
C1—C2—H2	119.8	C20—C21—C22	120.0 (12)
C3—C2—H2	119.8	C20—C21—H21	120.0
C4—C3—C2	116.4 (12)	C22—C21—H21	120.0
C4—C3—H3	121.8	C23—C22—C21	117.4 (13)
C2—C3—H3	121.8	C23—C22—H22	121.3
C5—C4—C3	121.5 (13)	C21—C22—H22	121.3
C5—C4—H4	119.3	N5—C23—C22	124.1 (11)
C3—C4—H4	119.3	N5—C23—H23	117.9
C4—C5—N1	121.8 (11)	C22—C23—H23	117.9
C4—C5—C6	123.5 (12)	Cl2—C24—Cl3	110.5 (8)
N1—C5—C6	114.6 (10)	Cl2—C24—Cl4	110.6 (8)
O1—C6—N2	129.0 (12)	Cl3—C24—Cl4	110.7 (9)
O1—C6—C5	119.1 (11)	Cl2—C24—H24	108.3
N2—C6—C5	111.9 (11)	Cl3—C24—H24	108.3
C12—C7—C8	120.0 (11)	Cl4—C24—H24	108.3
C12—C7—N2	114.8 (10)	Cl5—C25—Cl6	110.9 (7)
C8—C7—N2	125.2 (11)	Cl5—C25—Cl7	110.2 (7)
C7—C8—C9	119.8 (12)	Cl6—C25—Cl7	108.8 (7)
C7—C8—H8	120.1	Cl5—C25—H25	109.0
C9—C8—H8	120.1	Cl6—C25—H25	109.0
C8—C9—C10	119.2 (12)	Cl7—C25—H25	109.0
C8—C9—H9	120.4

Hydrogen-bond geometry (Å, º)

D—H···A	D—H	H···A	D···A	D—H···A
C24—H24···O1	1.00	2.17	3.144 (19)	164
C25—H25···O2	1.00	2.16	3.107 (16)	157