Crystal structure of di­chlorido­{2,6-bis­[(3-phenyl-1H-pyrazol-1-yl)meth­yl]pyridine}cobalt(II)

Son, K.; Woo, J.O.; Kim, D.; Kang, S.K.

doi:10.1107/S2056989015003862

Crystal structure of dichlorido{2,6-bis[(3-phenyl-1H-pyrazol-1-yl)methyl]pyridine}cobalt(II)

K. Son, J. O. Woo, D. Kim and S. K. Kang

In the title complex, [CoCl₂(C₂₅H₂₁N₅)], the Co^II atom is coordinated by two Cl atoms and two N atoms, provided by a tridentate pyrazolylpyridyl ligand, forming a slightly distorted tetrahedral geometry [range of angles: 96.51 (10) (chelate ring) to 118.60 (9)°]. The dihedral angle between Cl/Co/Cl and N/Co/N planes is 86.83 (7)°. The chelate ring has the conformation of a distorted boat. The dihedral angle between pyridyl ring and the coordinated pyrazolyl ring is 56.16 (12)°. The uncoordinated pyrazolyl ring is almost perpendicular to the pyridyl ring with the dihedral angle of 87.49 (10)°. In the crystal packing, intermolecular phenyl-C—H

π(pyridyl) interactions generate dimeric aggregates. These are connected into a zigzag supramolecular chain along the c-axis direction via π–π interactions [inter-centroid distance between pyridyl and phenyl rings = 3.664 (2) Å].

Keywords: crystal structure; Co^II complex; pyrazolylpyridyl; C—H

π interactions; π–π interactions.

Read article Similar articles

Supporting information

	Crystallographic Information File (CIF) https://doi.org/10.1107/S2056989015003862/tk5360sup1.cif Contains datablocks global, I
	Structure factor file (CIF format) https://doi.org/10.1107/S2056989015003862/tk5360Isup2.hkl Contains datablock I

CCDC reference: 1051138

checkCIF report

Key indicators

Single-crystal X-ray study
T = 296 K
Mean (C-C) = 0.005 Å
R factor = 0.058
wR factor = 0.132
Data-to-parameter ratio = 19.2

checkCIF/PLATON results

No syntax errors found



Alert level C
CRYSC01_ALERT_1_C The word below has not been recognised as a standard
            identifier.
            deep
PLAT906_ALERT_3_C Large K value in the Analysis of Variance ......     14.164 Check
PLAT906_ALERT_3_C Large K value in the Analysis of Variance ......      2.804 Check

Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details  in the CIF     Please Do !
PLAT910_ALERT_3_G Missing # of FCF Reflection(s) Below Th(Min) ...          1 Report
PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L=  0.600          6 Note

   0 ALERT level A = Most likely a serious problem - resolve or explain
   0 ALERT level B = A potentially serious problem, consider carefully
   3 ALERT level C = Check. Ensure it is not caused by an omission or oversight
   3 ALERT level G = General information/check it is not something unexpected

   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
   3 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion
   1 ALERT type 5 Informative message, check

Related literature top

For the synthesis of the title compound, see: Reger et al. (2005); Son et al. (2014). For metal complexes with similar ligands, see: Massoud et al. (2013); Sharma et al. (2011); Ojwach et al. (2007); Manikandan et al. (2000, 2001); Halcrow & Kilner (2002); Foster et al. (2002). For the potential applications of the ligand in catalysis, see: Karam et al. (2005).

Experimental top

To a stirred solution of 2,6-pyridinedimethanol (0.28 g, 2.0 mmol) and NaOH (0.8 g, 20 mmol) in tetrahydrofuran (THF)/water (7.5/7.5 ml) was added a solution of p-toluenesulfonyl chloride (0.76 g, 4.0 mmol) in THF (7.5 ml) at 0 °C. After 4 h of stirring, the mixture was poured into 20 ml of water and extracted with methylene chloride three times. The organic layer was washed with saturated aqueous NaCl solution and distilled water, and dried over Na₂SO₄; the solvent was removed in vacuo to afford 2,6-pyridine-dimethylene-ditosylate (0.788 g, 88%) as a white powder. In a separate flask under a nitrogen atmosphere, a solution of 3-phenyl-1H-pyrazole (0.61 g, 5.34 mmol) in dry THF (10 ml) was added drop-wise to a suspension of NaH (0.13 g, 5.34 mmol) in dry THF (10 ml) at 0 °C. After 15 min of stirring, a solution of 2,6-pyridine-dimethylene-ditosylate (1.20 g, 2.67 mmol) in dry THF (15 ml) was added to this solution; the mixture was stirred overnight, filtered, and the solvent was removed. The crude product was purified by column chromatography on silica gel with ethyl acetate : hexane = 1:1 as eluent to afford 0.41 g (40%) of pure ligand as a white oil.

To a solution of CoCl₂ (2.6 mg, 0.02 mmol) in THF (2 ml) was added a solution of the organic ligand (7.8 mg, 0.02 mmol) in THF (2 ml) drop-wise at 40 °C. The solution was stirred vigorously. A deep-blue suspension was formed immediately. The product was isolated as a blue powder by removing the solvent, washed repeatedly with THF followed by diethyl ether, and dried in vacuo. Deep-blue single crystals of the title compound were obtained by slow evaporation of its concentrated solution in dichloromethane at room temperature.

Structure description top

Computing details top

Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2002); data reduction: SAINT (Bruker, 2002); program(s) used to solve structure: SHELXS2013 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012).

Figures top

	Fig. 1. Molecular structure of the title compound, showing the atom-numbering scheme and 30% probability ellipsoids.
	Fig. 2. Dimer formation via C—H···π interactions.

Dichlorido{2,6-bis[(3-phenyl-1H-pyrazol-1-yl)methyl]pyridine}cobalt(II) top

Crystal data top

[CoCl₂(C₂₅H₂₁N₅)]	F(000) = 2136
M_r = 521.3	D_x = 1.503 Mg m⁻³
Monoclinic, C2/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2yc	Cell parameters from 4379 reflections
a = 12.9766 (4) Å	θ = 2.4–23.4°
b = 10.5867 (3) Å	µ = 1.00 mm⁻¹
c = 33.5943 (9) Å	T = 296 K
β = 93.2592 (19)°	Plate, deep-blue
V = 4607.7 (2) Å³	0.25 × 0.22 × 0.1 mm
Z = 8

Data collection top

Bruker SMART CCD area-detector diffractometer	3751 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	R_int = 0.072
φ and ω scans	θ_max = 28.3°, θ_min = 2.4°
Absorption correction: multi-scan (SADABS; Bruker, 2002)	h = −15→17
T_min = 0.76, T_max = 0.903	k = −14→14
25697 measured reflections	l = −44→44
5718 independent reflections

Refinement top

Refinement on F²	0 restraints
Least-squares matrix: full	Hydrogen site location: inferred from neighbouring sites
R[F² > 2σ(F²)] = 0.058	H-atom parameters constrained
wR(F²) = 0.132	w = 1/[σ²(F_o²) + (0.048P)² + 4.3485P] where P = (F_o² + 2F_c²)/3
S = 1.06	(Δ/σ)_max = 0.002
5718 reflections	Δρ_max = 0.52 e Å⁻³
298 parameters	Δρ_min = −0.47 e Å⁻³

Crystal data top

[CoCl₂(C₂₅H₂₁N₅)]	V = 4607.7 (2) Å³
M_r = 521.3	Z = 8
Monoclinic, C2/c	Mo Kα radiation
a = 12.9766 (4) Å	µ = 1.00 mm⁻¹
b = 10.5867 (3) Å	T = 296 K
c = 33.5943 (9) Å	0.25 × 0.22 × 0.1 mm
β = 93.2592 (19)°

Data collection top

Bruker SMART CCD area-detector diffractometer	5718 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2002)	3751 reflections with I > 2σ(I)
T_min = 0.76, T_max = 0.903	R_int = 0.072
25697 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.058	0 restraints
wR(F²) = 0.132	H-atom parameters constrained
S = 1.06	Δρ_max = 0.52 e Å⁻³
5718 reflections	Δρ_min = −0.47 e Å⁻³
298 parameters

Special details top

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 (Å²) top

	x	y	z	U_iso*/U_eq
Co1	0.39083 (3)	0.22404 (4)	0.58917 (2)	0.03468 (14)
Cl2	0.56212 (7)	0.23374 (10)	0.58231 (3)	0.0500 (2)
Cl3	0.32167 (10)	0.40748 (10)	0.60338 (3)	0.0672 (3)
N4	0.3229 (2)	0.1187 (3)	0.54406 (7)	0.0331 (6)
N5	0.2543 (2)	0.0299 (3)	0.55511 (7)	0.0366 (6)
C6	0.2331 (3)	−0.0533 (3)	0.52567 (10)	0.0443 (9)
H6	0.1887	−0.122	0.5266	0.053*
C7	0.2884 (3)	−0.0185 (3)	0.49419 (10)	0.0436 (9)
H7	0.2894	−0.059	0.4696	0.052*
C8	0.3435 (3)	0.0901 (3)	0.50604 (9)	0.0347 (7)
C9	0.4137 (2)	0.1637 (3)	0.48268 (9)	0.0342 (7)
C10	0.4601 (3)	0.1057 (4)	0.45118 (10)	0.0475 (9)
H10	0.4465	0.021	0.4457	0.057*
C11	0.5260 (3)	0.1714 (4)	0.42791 (12)	0.0562 (11)
H11	0.5554	0.1316	0.4066	0.067*
C12	0.5480 (3)	0.2960 (4)	0.43629 (11)	0.0534 (11)
H12	0.5953	0.3394	0.4216	0.064*
C13	0.5003 (3)	0.3558 (4)	0.46622 (11)	0.0509 (10)
H13	0.513	0.4411	0.471	0.061*
C14	0.4333 (3)	0.2909 (4)	0.48940 (10)	0.0436 (9)
H14	0.4012	0.3328	0.5096	0.052*
C15	0.2098 (3)	0.0399 (4)	0.59390 (9)	0.0403 (8)
H15A	0.1516	−0.0174	0.5947	0.048*
H15B	0.1841	0.1251	0.5972	0.048*
C16	0.2864 (2)	0.0096 (3)	0.62810 (9)	0.0333 (7)
N17	0.3619 (2)	0.0971 (2)	0.63560 (7)	0.0314 (6)
C18	0.4258 (2)	0.0796 (3)	0.66823 (9)	0.0330 (7)
C19	0.4218 (3)	−0.0281 (4)	0.69132 (10)	0.0430 (9)
H19	0.4689	−0.0395	0.7129	0.052*
C20	0.3486 (3)	−0.1176 (4)	0.68232 (11)	0.0492 (10)
H20	0.346	−0.1911	0.6974	0.059*
C21	0.2784 (3)	−0.0975 (4)	0.65052 (10)	0.0438 (9)
H21	0.2264	−0.156	0.6444	0.053*
C22	0.4977 (3)	0.1871 (3)	0.68058 (10)	0.0364 (8)
H22A	0.5015	0.2456	0.6585	0.044*
H22B	0.4696	0.2324	0.7026	0.044*
N23	0.6008 (2)	0.1435 (3)	0.69249 (8)	0.0363 (6)
C24	0.6654 (3)	0.0790 (3)	0.67056 (10)	0.0420 (8)
H24	0.6533	0.0544	0.6441	0.05*
C25	0.7519 (3)	0.0558 (3)	0.69398 (10)	0.0436 (9)
H25	0.8105	0.0122	0.6871	0.052*
C26	0.7342 (3)	0.1112 (3)	0.73064 (9)	0.0352 (7)
N27	0.6417 (2)	0.1659 (3)	0.72992 (8)	0.0374 (7)
C28	0.8065 (3)	0.1190 (3)	0.76634 (10)	0.0376 (8)
C29	0.8786 (3)	0.0243 (4)	0.77423 (12)	0.0503 (9)
H29	0.8804	−0.0454	0.7574	0.06*
C30	0.9484 (3)	0.0329 (4)	0.80719 (12)	0.0550 (10)
H30	0.9961	−0.0314	0.8124	0.066*
C31	0.9473 (3)	0.1347 (4)	0.83167 (11)	0.0557 (11)
H31	0.9954	0.1413	0.8532	0.067*
C32	0.8750 (3)	0.2281 (4)	0.82467 (12)	0.0586 (11)
H32	0.873	0.2968	0.8419	0.07*
C33	0.8047 (3)	0.2202 (4)	0.79195 (11)	0.0493 (9)
H33	0.756	0.2838	0.7874	0.059*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Co1	0.0414 (3)	0.0335 (3)	0.0290 (2)	−0.0090 (2)	0.00033 (17)	−0.00083 (19)
Cl2	0.0439 (5)	0.0617 (6)	0.0444 (5)	−0.0201 (5)	0.0022 (4)	0.0001 (4)
Cl3	0.1011 (9)	0.0450 (6)	0.0563 (6)	0.0149 (6)	0.0115 (6)	−0.0023 (5)
N4	0.0346 (15)	0.0383 (16)	0.0263 (13)	−0.0087 (12)	0.0011 (11)	−0.0016 (11)
N5	0.0377 (16)	0.0422 (17)	0.0297 (13)	−0.0109 (13)	0.0008 (11)	−0.0011 (12)
C6	0.050 (2)	0.043 (2)	0.0392 (19)	−0.0181 (18)	−0.0066 (16)	−0.0034 (16)
C7	0.056 (2)	0.043 (2)	0.0309 (17)	−0.0089 (18)	−0.0021 (15)	−0.0078 (15)
C8	0.0377 (18)	0.039 (2)	0.0267 (15)	−0.0016 (15)	−0.0035 (13)	−0.0009 (14)
C9	0.0342 (18)	0.040 (2)	0.0279 (15)	0.0005 (15)	−0.0028 (13)	0.0022 (14)
C10	0.057 (2)	0.045 (2)	0.0408 (19)	0.0037 (19)	0.0075 (17)	−0.0028 (17)
C11	0.059 (3)	0.065 (3)	0.046 (2)	0.011 (2)	0.0181 (19)	0.003 (2)
C12	0.045 (2)	0.076 (3)	0.039 (2)	−0.006 (2)	0.0033 (16)	0.017 (2)
C13	0.061 (3)	0.050 (2)	0.040 (2)	−0.018 (2)	−0.0066 (18)	0.0047 (17)
C14	0.055 (2)	0.047 (2)	0.0291 (16)	−0.0053 (18)	0.0015 (15)	0.0001 (15)
C15	0.0321 (18)	0.056 (2)	0.0334 (17)	−0.0123 (17)	0.0030 (13)	0.0007 (16)
C16	0.0312 (17)	0.0408 (19)	0.0287 (15)	−0.0066 (15)	0.0079 (13)	−0.0017 (14)
N17	0.0319 (14)	0.0340 (15)	0.0284 (13)	−0.0035 (12)	0.0016 (11)	0.0011 (11)
C18	0.0361 (18)	0.0368 (19)	0.0264 (15)	−0.0012 (15)	0.0028 (13)	−0.0031 (13)
C19	0.046 (2)	0.050 (2)	0.0329 (17)	−0.0017 (18)	0.0001 (15)	0.0083 (16)
C20	0.058 (3)	0.041 (2)	0.049 (2)	−0.0077 (19)	0.0103 (18)	0.0156 (17)
C21	0.042 (2)	0.047 (2)	0.0427 (19)	−0.0185 (17)	0.0074 (16)	0.0024 (16)
C22	0.0421 (19)	0.0361 (19)	0.0301 (16)	−0.0028 (15)	−0.0057 (14)	−0.0019 (13)
N23	0.0362 (16)	0.0415 (17)	0.0309 (14)	−0.0044 (13)	−0.0016 (11)	−0.0028 (12)
C24	0.045 (2)	0.045 (2)	0.0354 (18)	−0.0048 (17)	0.0015 (15)	−0.0069 (16)
C25	0.041 (2)	0.043 (2)	0.047 (2)	−0.0017 (17)	0.0055 (16)	−0.0038 (16)
C26	0.0341 (18)	0.0339 (18)	0.0375 (17)	−0.0085 (15)	−0.0001 (14)	0.0033 (14)
N27	0.0418 (17)	0.0408 (17)	0.0289 (14)	−0.0057 (14)	−0.0035 (12)	0.0003 (12)
C28	0.0342 (19)	0.044 (2)	0.0345 (17)	−0.0067 (16)	0.0000 (14)	0.0042 (15)
C29	0.047 (2)	0.052 (2)	0.052 (2)	−0.0003 (19)	0.0010 (18)	−0.0040 (19)
C30	0.042 (2)	0.064 (3)	0.059 (2)	0.003 (2)	−0.0032 (18)	0.013 (2)
C31	0.050 (2)	0.073 (3)	0.042 (2)	−0.013 (2)	−0.0068 (18)	0.004 (2)
C32	0.067 (3)	0.061 (3)	0.047 (2)	−0.004 (2)	−0.0086 (19)	−0.016 (2)
C33	0.049 (2)	0.046 (2)	0.052 (2)	0.0038 (19)	−0.0074 (17)	0.0010 (18)

Geometric parameters (Å, º) top

Co1—N4	2.041 (3)	C18—C19	1.381 (5)
Co1—N17	2.109 (3)	C18—C22	1.515 (4)
Co1—Cl3	2.2030 (11)	C19—C20	1.364 (5)
Co1—Cl2	2.2499 (10)	C19—H19	0.93
N4—C8	1.354 (4)	C20—C21	1.380 (5)
N4—N5	1.361 (4)	C20—H20	0.93
N5—C6	1.341 (4)	C21—H21	0.93
N5—C15	1.459 (4)	C22—N23	1.450 (4)
C6—C7	1.362 (5)	C22—H22A	0.97
C6—H6	0.93	C22—H22B	0.97
C7—C8	1.400 (5)	N23—C24	1.335 (4)
C7—H7	0.93	N23—N27	1.358 (3)
C8—C9	1.461 (5)	C24—C25	1.356 (5)
C9—C14	1.386 (5)	C24—H24	0.93
C9—C10	1.390 (5)	C25—C26	1.395 (5)
C10—C11	1.378 (5)	C25—H25	0.93
C10—H10	0.93	C26—N27	1.331 (4)
C11—C12	1.376 (6)	C26—C28	1.482 (4)
C11—H11	0.93	C28—C33	1.375 (5)
C12—C13	1.366 (6)	C28—C29	1.388 (5)
C12—H12	0.93	C29—C30	1.393 (5)
C13—C14	1.383 (5)	C29—H29	0.93
C13—H13	0.93	C30—C31	1.356 (6)
C14—H14	0.93	C30—H30	0.93
C15—C16	1.510 (4)	C31—C32	1.375 (6)
C15—H15A	0.97	C31—H31	0.93
C15—H15B	0.97	C32—C33	1.390 (5)
C16—N17	1.361 (4)	C32—H32	0.93
C16—C21	1.369 (5)	C33—H33	0.93
N17—C18	1.349 (4)

N4—Co1—N17	96.51 (10)	C16—N17—Co1	116.9 (2)
N4—Co1—Cl3	118.60 (9)	N17—C18—C19	121.9 (3)
N17—Co1—Cl3	108.05 (8)	N17—C18—C22	117.4 (3)
N4—Co1—Cl2	109.65 (8)	C19—C18—C22	120.6 (3)
N17—Co1—Cl2	108.85 (8)	C20—C19—C18	119.8 (3)
Cl3—Co1—Cl2	113.51 (5)	C20—C19—H19	120.1
C8—N4—N5	105.7 (2)	C18—C19—H19	120.1
C8—N4—Co1	136.3 (2)	C19—C20—C21	119.0 (3)
N5—N4—Co1	115.88 (18)	C19—C20—H20	120.5
C6—N5—N4	111.2 (3)	C21—C20—H20	120.5
C6—N5—C15	129.2 (3)	C16—C21—C20	119.1 (3)
N4—N5—C15	119.5 (3)	C16—C21—H21	120.5
N5—C6—C7	107.5 (3)	C20—C21—H21	120.5
N5—C6—H6	126.3	N23—C22—C18	112.4 (3)
C7—C6—H6	126.3	N23—C22—H22A	109.1
C6—C7—C8	106.5 (3)	C18—C22—H22A	109.1
C6—C7—H7	126.7	N23—C22—H22B	109.1
C8—C7—H7	126.7	C18—C22—H22B	109.1
N4—C8—C7	109.1 (3)	H22A—C22—H22B	107.9
N4—C8—C9	123.4 (3)	C24—N23—N27	112.0 (3)
C7—C8—C9	127.5 (3)	C24—N23—C22	127.5 (3)
C14—C9—C10	118.0 (3)	N27—N23—C22	120.4 (3)
C14—C9—C8	123.0 (3)	N23—C24—C25	107.3 (3)
C10—C9—C8	118.9 (3)	N23—C24—H24	126.3
C11—C10—C9	121.2 (4)	C25—C24—H24	126.3
C11—C10—H10	119.4	C24—C25—C26	105.3 (3)
C9—C10—H10	119.4	C24—C25—H25	127.4
C12—C11—C10	119.7 (4)	C26—C25—H25	127.4
C12—C11—H11	120.1	N27—C26—C25	111.1 (3)
C10—C11—H11	120.1	N27—C26—C28	121.2 (3)
C13—C12—C11	119.8 (4)	C25—C26—C28	127.5 (3)
C13—C12—H12	120.1	C26—N27—N23	104.2 (3)
C11—C12—H12	120.1	C33—C28—C29	118.6 (3)
C12—C13—C14	120.7 (4)	C33—C28—C26	121.2 (3)
C12—C13—H13	119.7	C29—C28—C26	120.2 (3)
C14—C13—H13	119.7	C28—C29—C30	120.4 (4)
C13—C14—C9	120.4 (3)	C28—C29—H29	119.8
C13—C14—H14	119.8	C30—C29—H29	119.8
C9—C14—H14	119.8	C31—C30—C29	120.4 (4)
N5—C15—C16	112.8 (3)	C31—C30—H30	119.8
N5—C15—H15A	109	C29—C30—H30	119.8
C16—C15—H15A	109	C30—C31—C32	119.9 (4)
N5—C15—H15B	109	C30—C31—H31	120
C16—C15—H15B	109	C32—C31—H31	120
H15A—C15—H15B	107.8	C31—C32—C33	120.2 (4)
N17—C16—C21	122.5 (3)	C31—C32—H32	119.9
N17—C16—C15	115.6 (3)	C33—C32—H32	119.9
C21—C16—C15	121.8 (3)	C28—C33—C32	120.5 (4)
C18—N17—C16	117.4 (3)	C28—C33—H33	119.7
C18—N17—Co1	124.2 (2)	C32—C33—H33	119.7

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C11—H11···Cg1ⁱ	0.93	2.87	3.806 (4)	180

Symmetry code: (i) −x+1, −y, −z+1.

Selected bond lengths (Å) top

Co1—N4	2.041 (3)	Co1—Cl3	2.2030 (11)
Co1—N17	2.109 (3)	Co1—Cl2	2.2499 (10)