metal-organic compounds
{Bis[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}{tris[5-methyl-3-(trifluoromethyl)pyrazol-1-yl]borato}cobalt(II): a structure containing a B—H⋯Co agostic interaction
aDepartment of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854 USA
*Correspondence e-mail: DZSquared@aol.com
The title compound, [Co(C10H10BF6N4)(C15H13BF9N6)], is a neutral CoII complex which contains one each of the anionic ligands, bis(3-trifluoromethyl-5-methylpyrazol-1-yl)borate (Bp) and tris(3-trifluoromethyl-5-methylpyrazol-1-yl)borate (Tp). A distorted octahedral coordination geometry results from ligation of an H atom, which is part of an agostic B—H⋯Co interaction (H⋯Co = 2.17 Å), and by five imine N atoms, two from a Bp ligand and three from a Tp ligand. In the crystal, molecules form layers parallel to the (10) planes, and the layers are linked along the a axis by C—H⋯F hydrogen bonds. An intramolecular C—H⋯F interaction also occurs.
Related literature
For our study of nitrogen-containing heterocyles, such as expanded-ring imidazoles, and their complexes with metal ions, see: Stibrany & Potenza (2009a). For metal complexes with pyrazole, see: Stibrany & Potenza (2006, 2009b); Stibrany et al. (1999, 2005, 2006). Copper and cobalt complexes utlizing the title ligand have been prepared for oxidation studies, see: Gorun et al. (2000). For agostic interactions, see: Ruman et al. (2001, 2002); Siemer et al. (2001); Ghosh et al. (1998).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT-Plus (Bruker, 2000); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996) and ORTEP-32 (Farrugia, 1997); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536810011773/fk2015sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810011773/fk2015Isup2.hkl
Both Tp and Bp ligands were prepared as previously reported (Gorun et al., 2000). To a flask containing 10 ml of acetonitrile, 70 mg of Co(ClO4)2.6 H2O (0.19 mmol) was disssolved to give a pink solution. Then 94 mg of Tp (0.19 mmol) was added and the mixture was allowed to stir for 10 min. giving some white precipitate. Then, 67 mg of Bp (0.19 mmol) was added and the mixture was allowed to stir for an additional 15 min. The mixture was filtered to remove white solids and yielded a clear red solution, which was left to evaporate slowly. Upon evaporation, a major dichroic red-orange phase (compound (I)) was separated mechanically and characterized. IR (KBr pellet, cm-1); 2569(Tp, B—H, w), 2483(Bp, B—H, w), 2223(Bp, B—H···Co, w), 1471(s), 1261(s), 1165(s), 1114(s), 999(s), 795(m), 648(m).
Hydrogen atoms of the methyl groups were located on difference Fourier maps, those of the pyrrole fragments were positioned geometrically. For
a riding model was used, with C—H = 0.98 Å for methyl H atoms and 0.95 Å for pyrrole H atoms and Uiso(H) = 1.2 Ueq (C) and 1.5 Ueq (C-methyl). Atom positions and isotropic displacement parameters of B—H hydrogens were refined freely.Our long-term interest in the synthesis and applications of nitrogen-containing heterocyles, such as expanded-ring imidazoles, and their complexes with metal ions (Stibrany & Potenza, 2009a) led us to prepare the title compound (I). With pyrazole, a variety of metal complexes has been prepared, predominantly with copper (Stibrany & Potenza, 2006), including the Cu(II) complex of an unusual (dimethylamino)methane bridged bis(pyrazole) ligand formed via a DMF aminalization (Stibrany et al., 1999) and a novel binuclear µ-oxalato(1-benzylpyrazole)2(CF3SO3)2copper(II) compound resulting from the fixation of carbon dioxide (Stibrany et al., 2005). A tris(pyrazolyl)arene ligand which forms geometrically constrained metal complexes has also been prepared (Stibrany et al., 2006),as has a sterically strained trigonal-bipyramidal Cu(II) complex containing a 1-benzylpyrazole ligand (Stibrany & Potenza, 2009b). Copper and cobalt complexes utlizing the title ligand were prepared for oxidation studies (Gorun et al., 2000).
Compound (I) (Fig. 1) contains a central CoII ion linked to a Tp and a Bp ligand. Ligation is effected by three imine N atoms of the Tp ligand, two imine N atoms of the Bp ligand, and an H atom which participates in a two-electron, three-center B—H···Co bond. The result is a distorted octahedral coordination geometry.
A number of cobalt(II) complexes containing mixed bis (Bp)- and tris pyrazolylborates (Tp) and C—H···Co agostic interactions have been reported, with H···Co distances ranging from 2.03 Å (Ruman et al., 2002), 2.035 Å (Ruman et al., 2001) to 2.334 Å (Siemer et al.., 2001). The H···Co distance in (I), 2.17 Å, lies between these two extremes. Infrared spectral results also support the existence of an agostic 2-electron, 3-center bond in (I). B—H stretching vibrations for BH2 groups in which one of the H atoms is involved in a 2-electron, 3-center bond with a metal ion typically lie in the range 2100-2500 cm-1, with the lower value corresponding to the agostic interaction (Ghosh et al., 1998). In (I), IR bands at 2569 and 2483 cm-1 are assigned as free B—H stretching vibrations, while the band at 2223 cm-1 is assigned to the bound B—H group.
In the crystal, the molecules form layers parallel to the (10 -1) planes (Figures 2 and 3), which are linked by intermolecular C—H···F hydrogen bonds (Table 1) in such a way as to form chains along the a cell direction. Platon (Spek, 2009) reveals11 short intermolecular contacts, 10 of which are C—H···F interactions, which, along with the C—H···F hydrogen bonds noted above suggest that the trifluoromethyl groups in (I) contribute substantially to the stability of the structure.
For our study of nitrogen-containing heterocyles, such as expanded-ring imidazoles, and their complexes with metal ions, see: Stibrany & Potenza (2009a). For metal complexes with pyrazole, see: Stibrany & Potenza (2006, 2009b); Stibrany et al. (1999, 2005, 2006). Copper and cobalt complexes utlizing the title ligand have been prepared for oxidation studies, see: Gorun et al. (2000). For agostic interactions, see: Ruman et al. (2001, 2002); Siemer et al. (2001); Ghosh et al. (1998).
Data collection: SMART (Bruker, 2000); cell
SAINT-Plus (Bruker, 2000); data reduction: SAINT-Plus (Bruker, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996) and ORTEP-32 (Farrugia, 1997); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).[Co(C10H10BF6N4)(C15H13BF9N6)] | F(000) = 1660 |
Mr = 829.08 | Dx = 1.663 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 952 reflections |
a = 10.8195 (16) Å | θ = 2.6–26.7° |
b = 16.559 (2) Å | µ = 0.64 mm−1 |
c = 18.687 (3) Å | T = 100 K |
β = 98.408 (3)° | Block, orange-red |
V = 3312.0 (8) Å3 | 0.37 × 0.30 × 0.14 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 7286 independent reflections |
Radiation source: fine-focus sealed tube | 6292 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
φ and ω scans | θmax = 27.1°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Blessing, 1995) | h = −13→13 |
Tmin = 0.919, Tmax = 1.00 | k = −21→20 |
33535 measured reflections | l = −23→23 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.039 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.108 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0612P)2 + 2.660P] where P = (Fo2 + 2Fc2)/3 |
7286 reflections | (Δ/σ)max = 0.002 |
495 parameters | Δρmax = 0.69 e Å−3 |
0 restraints | Δρmin = −0.44 e Å−3 |
[Co(C10H10BF6N4)(C15H13BF9N6)] | V = 3312.0 (8) Å3 |
Mr = 829.08 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 10.8195 (16) Å | µ = 0.64 mm−1 |
b = 16.559 (2) Å | T = 100 K |
c = 18.687 (3) Å | 0.37 × 0.30 × 0.14 mm |
β = 98.408 (3)° |
Bruker SMART CCD area-detector diffractometer | 7286 independent reflections |
Absorption correction: multi-scan (SADABS; Blessing, 1995) | 6292 reflections with I > 2σ(I) |
Tmin = 0.919, Tmax = 1.00 | Rint = 0.024 |
33535 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 0 restraints |
wR(F2) = 0.108 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.69 e Å−3 |
7286 reflections | Δρmin = −0.44 e Å−3 |
495 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > σ(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. |
x | y | z | Uiso*/Ueq | ||
Co1 | 0.67692 (2) | 0.302118 (14) | 0.620671 (13) | 0.01918 (8) | |
F1 | 1.04898 (14) | 0.32294 (9) | 0.81839 (7) | 0.0442 (4) | |
F2 | 0.97407 (14) | 0.41514 (8) | 0.74488 (7) | 0.0416 (3) | |
F3 | 0.85041 (13) | 0.33420 (10) | 0.78867 (8) | 0.0435 (3) | |
F4 | 0.81154 (15) | 0.11513 (9) | 0.37998 (8) | 0.0467 (4) | |
F5 | 0.97767 (14) | 0.18564 (11) | 0.40862 (8) | 0.0523 (4) | |
F6 | 0.85028 (15) | 0.21414 (10) | 0.31233 (7) | 0.0482 (4) | |
F7 | 0.54586 (13) | 0.19079 (9) | 0.75728 (8) | 0.0438 (3) | |
F8 | 0.44043 (15) | 0.08179 (9) | 0.73202 (10) | 0.0535 (4) | |
F9 | 0.38739 (12) | 0.19101 (9) | 0.67404 (9) | 0.0455 (4) | |
F10 | 0.99728 (15) | 0.51996 (12) | 0.60742 (11) | 0.0658 (5) | |
F11 | 0.86413 (16) | 0.50824 (13) | 0.51206 (10) | 0.0670 (5) | |
F12 | 0.93241 (13) | 0.40309 (9) | 0.56911 (9) | 0.0451 (4) | |
F13 | 0.44364 (19) | 0.19865 (10) | 0.50002 (10) | 0.0662 (5) | |
F14 | 0.25362 (17) | 0.23531 (14) | 0.47103 (13) | 0.0826 (7) | |
F15 | 0.4003 (2) | 0.29983 (10) | 0.43341 (10) | 0.0603 (5) | |
N1 | 0.86727 (15) | 0.26325 (9) | 0.65305 (8) | 0.0205 (3) | |
N2 | 0.90879 (15) | 0.20741 (9) | 0.60846 (9) | 0.0220 (3) | |
N3 | 0.70332 (16) | 0.29844 (10) | 0.51241 (9) | 0.0234 (3) | |
N4 | 0.77009 (16) | 0.23567 (10) | 0.49095 (9) | 0.0248 (3) | |
N5 | 0.64502 (15) | 0.17499 (10) | 0.62351 (9) | 0.0241 (3) | |
N6 | 0.70838 (16) | 0.13117 (10) | 0.57879 (9) | 0.0253 (3) | |
N7 | 0.72691 (15) | 0.42384 (10) | 0.64107 (9) | 0.0228 (3) | |
N8 | 0.65158 (16) | 0.45466 (10) | 0.68672 (9) | 0.0265 (4) | |
N9 | 0.48358 (16) | 0.32725 (11) | 0.60129 (10) | 0.0277 (4) | |
N10 | 0.45355 (16) | 0.37470 (11) | 0.65569 (10) | 0.0306 (4) | |
C1 | 0.95858 (19) | 0.33758 (13) | 0.76308 (11) | 0.0268 (4) | |
C2 | 0.96620 (18) | 0.28046 (11) | 0.70255 (10) | 0.0218 (4) | |
C3 | 1.07128 (18) | 0.23733 (12) | 0.69001 (11) | 0.0256 (4) | |
H3 | 1.1527 | 0.2394 | 0.7170 | 0.031* | |
C4 | 1.03149 (19) | 0.19085 (12) | 0.62981 (11) | 0.0266 (4) | |
C5 | 1.1019 (2) | 0.12976 (16) | 0.59297 (14) | 0.0402 (6) | |
H5A | 1.0657 | 0.0761 | 0.5978 | 0.060* | |
H5B | 1.1897 | 0.1296 | 0.6153 | 0.060* | |
H5C | 1.0965 | 0.1435 | 0.5416 | 0.060* | |
C6 | 0.8573 (2) | 0.19030 (15) | 0.38120 (12) | 0.0370 (5) | |
C7 | 0.7869 (2) | 0.24756 (14) | 0.42153 (11) | 0.0297 (4) | |
C8 | 0.7303 (2) | 0.31839 (14) | 0.39755 (11) | 0.0320 (5) | |
H8 | 0.7273 | 0.3419 | 0.3510 | 0.038* | |
C9 | 0.67811 (19) | 0.34874 (12) | 0.45617 (11) | 0.0267 (4) | |
C10 | 0.6041 (2) | 0.42469 (13) | 0.45943 (12) | 0.0321 (5) | |
H10A | 0.5714 | 0.4271 | 0.5056 | 0.048* | |
H10B | 0.5344 | 0.4252 | 0.4195 | 0.048* | |
H10C | 0.6580 | 0.4715 | 0.4553 | 0.048* | |
C11 | 0.4863 (2) | 0.14675 (14) | 0.70263 (13) | 0.0349 (5) | |
C12 | 0.56841 (19) | 0.12256 (13) | 0.64936 (12) | 0.0294 (4) | |
C13 | 0.5808 (2) | 0.04605 (13) | 0.62153 (14) | 0.0385 (5) | |
H13 | 0.5364 | −0.0013 | 0.6311 | 0.046* | |
C14 | 0.6711 (2) | 0.05289 (13) | 0.57699 (13) | 0.0350 (5) | |
C15 | 0.7250 (3) | −0.01038 (15) | 0.53330 (17) | 0.0528 (7) | |
H15A | 0.7172 | 0.0071 | 0.4827 | 0.079* | |
H15B | 0.6797 | −0.0613 | 0.5362 | 0.079* | |
H15C | 0.8134 | −0.0184 | 0.5524 | 0.079* | |
C16 | 0.8966 (2) | 0.47835 (14) | 0.57809 (13) | 0.0349 (5) | |
C17 | 0.79552 (19) | 0.48610 (12) | 0.62379 (12) | 0.0281 (4) | |
C18 | 0.7643 (2) | 0.55635 (13) | 0.65694 (14) | 0.0392 (6) | |
H18 | 0.7989 | 0.6086 | 0.6530 | 0.047* | |
C19 | 0.6729 (2) | 0.53452 (14) | 0.69650 (13) | 0.0362 (5) | |
C20 | 0.6035 (3) | 0.58409 (19) | 0.74419 (18) | 0.0596 (9) | |
H20A | 0.5154 | 0.5876 | 0.7228 | 0.089* | |
H20B | 0.6395 | 0.6385 | 0.7491 | 0.089* | |
H20C | 0.6100 | 0.5587 | 0.7920 | 0.089* | |
C21 | 0.3685 (2) | 0.26228 (14) | 0.49148 (15) | 0.0430 (6) | |
C22 | 0.3755 (2) | 0.31429 (13) | 0.55705 (14) | 0.0347 (5) | |
C23 | 0.2776 (2) | 0.35359 (15) | 0.58241 (15) | 0.0414 (6) | |
H23 | 0.1924 | 0.3542 | 0.5611 | 0.050* | |
C24 | 0.3302 (2) | 0.39173 (15) | 0.64533 (14) | 0.0392 (6) | |
C25 | 0.2719 (3) | 0.44475 (19) | 0.69549 (16) | 0.0544 (8) | |
H25A | 0.2817 | 0.4201 | 0.7437 | 0.082* | |
H25B | 0.1829 | 0.4514 | 0.6773 | 0.082* | |
H25C | 0.3129 | 0.4977 | 0.6985 | 0.082* | |
B1 | 0.8187 (2) | 0.16910 (14) | 0.54601 (12) | 0.0250 (4) | |
B2 | 0.5641 (3) | 0.39322 (17) | 0.71633 (14) | 0.0342 (5) | |
H1B | 0.865 (2) | 0.1208 (14) | 0.5190 (12) | 0.021 (5)* | |
H21B | 0.537 (2) | 0.4097 (16) | 0.7632 (14) | 0.039 (7)* | |
H22B | 0.623 (2) | 0.3326 (16) | 0.7245 (13) | 0.034 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Co1 | 0.01869 (13) | 0.01639 (13) | 0.02269 (14) | 0.00083 (9) | 0.00378 (9) | 0.00099 (9) |
F1 | 0.0457 (8) | 0.0479 (8) | 0.0336 (7) | 0.0131 (7) | −0.0119 (6) | −0.0087 (6) |
F2 | 0.0560 (9) | 0.0245 (6) | 0.0418 (8) | −0.0014 (6) | −0.0008 (6) | −0.0054 (5) |
F3 | 0.0374 (7) | 0.0564 (9) | 0.0388 (7) | −0.0033 (7) | 0.0125 (6) | −0.0156 (7) |
F4 | 0.0610 (10) | 0.0411 (8) | 0.0383 (8) | 0.0064 (7) | 0.0084 (7) | −0.0108 (6) |
F5 | 0.0371 (8) | 0.0768 (12) | 0.0437 (8) | 0.0101 (7) | 0.0081 (6) | −0.0089 (8) |
F6 | 0.0538 (9) | 0.0634 (10) | 0.0296 (7) | 0.0059 (8) | 0.0139 (6) | −0.0045 (6) |
F7 | 0.0353 (7) | 0.0552 (9) | 0.0426 (8) | 0.0054 (6) | 0.0120 (6) | 0.0043 (7) |
F8 | 0.0480 (9) | 0.0410 (8) | 0.0773 (11) | 0.0004 (7) | 0.0284 (8) | 0.0288 (8) |
F9 | 0.0249 (7) | 0.0527 (9) | 0.0593 (9) | 0.0102 (6) | 0.0081 (6) | 0.0264 (7) |
F10 | 0.0372 (8) | 0.0734 (12) | 0.0866 (13) | −0.0277 (8) | 0.0084 (8) | −0.0085 (10) |
F11 | 0.0490 (9) | 0.0924 (14) | 0.0610 (10) | 0.0132 (9) | 0.0128 (8) | 0.0483 (10) |
F12 | 0.0412 (8) | 0.0387 (8) | 0.0615 (9) | 0.0026 (6) | 0.0275 (7) | 0.0110 (7) |
F13 | 0.0834 (13) | 0.0372 (8) | 0.0654 (11) | 0.0137 (8) | −0.0310 (10) | −0.0072 (7) |
F14 | 0.0451 (10) | 0.0953 (16) | 0.1006 (16) | −0.0343 (10) | −0.0126 (10) | −0.0172 (13) |
F15 | 0.0841 (13) | 0.0401 (9) | 0.0539 (10) | −0.0147 (8) | 0.0003 (9) | 0.0004 (7) |
N1 | 0.0219 (8) | 0.0167 (7) | 0.0234 (8) | 0.0002 (6) | 0.0045 (6) | 0.0006 (6) |
N2 | 0.0222 (8) | 0.0202 (8) | 0.0242 (8) | 0.0011 (6) | 0.0054 (6) | −0.0018 (6) |
N3 | 0.0248 (8) | 0.0203 (8) | 0.0248 (8) | −0.0004 (6) | 0.0021 (6) | −0.0006 (6) |
N4 | 0.0255 (8) | 0.0244 (8) | 0.0243 (8) | −0.0003 (7) | 0.0032 (6) | −0.0037 (6) |
N5 | 0.0205 (8) | 0.0211 (8) | 0.0304 (8) | −0.0010 (6) | 0.0027 (6) | 0.0038 (6) |
N6 | 0.0271 (8) | 0.0178 (8) | 0.0304 (8) | −0.0009 (6) | 0.0019 (7) | −0.0011 (6) |
N7 | 0.0228 (8) | 0.0212 (8) | 0.0244 (8) | 0.0026 (6) | 0.0038 (6) | −0.0006 (6) |
N8 | 0.0271 (8) | 0.0262 (8) | 0.0253 (8) | 0.0080 (7) | 0.0011 (7) | −0.0070 (7) |
N9 | 0.0216 (8) | 0.0248 (8) | 0.0369 (9) | −0.0010 (7) | 0.0047 (7) | 0.0060 (7) |
N10 | 0.0249 (9) | 0.0298 (9) | 0.0402 (10) | 0.0044 (7) | 0.0147 (7) | 0.0106 (8) |
C1 | 0.0252 (10) | 0.0261 (10) | 0.0279 (10) | 0.0021 (8) | −0.0003 (8) | −0.0008 (8) |
C2 | 0.0224 (9) | 0.0191 (8) | 0.0238 (9) | −0.0027 (7) | 0.0031 (7) | 0.0037 (7) |
C3 | 0.0198 (9) | 0.0264 (10) | 0.0307 (10) | −0.0013 (7) | 0.0037 (7) | 0.0025 (8) |
C4 | 0.0221 (9) | 0.0284 (10) | 0.0302 (10) | 0.0025 (8) | 0.0069 (8) | 0.0017 (8) |
C5 | 0.0276 (11) | 0.0487 (14) | 0.0445 (13) | 0.0109 (10) | 0.0055 (10) | −0.0130 (11) |
C6 | 0.0374 (12) | 0.0458 (14) | 0.0283 (11) | 0.0024 (10) | 0.0067 (9) | −0.0042 (9) |
C7 | 0.0298 (10) | 0.0347 (11) | 0.0242 (9) | −0.0041 (8) | 0.0028 (8) | −0.0039 (8) |
C8 | 0.0362 (12) | 0.0354 (12) | 0.0240 (10) | −0.0036 (9) | 0.0031 (8) | 0.0014 (8) |
C9 | 0.0279 (10) | 0.0262 (10) | 0.0245 (9) | −0.0050 (8) | −0.0013 (8) | 0.0011 (8) |
C10 | 0.0399 (12) | 0.0243 (10) | 0.0305 (10) | 0.0009 (9) | −0.0002 (9) | 0.0055 (8) |
C11 | 0.0245 (10) | 0.0343 (12) | 0.0464 (13) | 0.0023 (9) | 0.0069 (9) | 0.0194 (10) |
C12 | 0.0230 (10) | 0.0262 (10) | 0.0376 (11) | −0.0021 (8) | −0.0001 (8) | 0.0115 (8) |
C13 | 0.0376 (12) | 0.0232 (10) | 0.0530 (14) | −0.0079 (9) | 0.0008 (11) | 0.0074 (10) |
C14 | 0.0378 (12) | 0.0211 (10) | 0.0443 (12) | −0.0057 (9) | 0.0002 (10) | 0.0005 (9) |
C15 | 0.0657 (18) | 0.0217 (11) | 0.0725 (19) | −0.0089 (11) | 0.0149 (15) | −0.0126 (12) |
C16 | 0.0261 (10) | 0.0325 (11) | 0.0448 (13) | −0.0050 (9) | 0.0008 (9) | 0.0137 (10) |
C17 | 0.0236 (9) | 0.0210 (9) | 0.0368 (11) | −0.0007 (7) | −0.0051 (8) | 0.0030 (8) |
C18 | 0.0309 (11) | 0.0203 (10) | 0.0602 (15) | −0.0005 (8) | −0.0143 (10) | −0.0047 (10) |
C19 | 0.0305 (11) | 0.0283 (11) | 0.0445 (13) | 0.0090 (9) | −0.0122 (9) | −0.0152 (9) |
C20 | 0.0492 (16) | 0.0520 (17) | 0.0720 (19) | 0.0197 (13) | −0.0102 (14) | −0.0396 (15) |
C21 | 0.0359 (12) | 0.0273 (11) | 0.0590 (15) | −0.0096 (9) | −0.0161 (11) | 0.0102 (11) |
C22 | 0.0231 (10) | 0.0267 (11) | 0.0525 (14) | −0.0043 (8) | −0.0007 (9) | 0.0164 (9) |
C23 | 0.0195 (10) | 0.0385 (13) | 0.0656 (16) | 0.0001 (9) | 0.0042 (10) | 0.0263 (12) |
C24 | 0.0259 (11) | 0.0386 (12) | 0.0566 (15) | 0.0087 (9) | 0.0182 (10) | 0.0266 (11) |
C25 | 0.0419 (14) | 0.0625 (18) | 0.0663 (18) | 0.0238 (13) | 0.0327 (13) | 0.0268 (15) |
B1 | 0.0253 (11) | 0.0230 (10) | 0.0264 (11) | 0.0009 (8) | 0.0028 (9) | −0.0028 (8) |
B2 | 0.0352 (13) | 0.0410 (14) | 0.0286 (12) | 0.0114 (11) | 0.0118 (10) | 0.0064 (10) |
Co1—N3 | 2.0850 (17) | C2—C3 | 1.391 (3) |
Co1—N7 | 2.1072 (17) | C3—C4 | 1.379 (3) |
Co1—N9 | 2.1115 (18) | C3—H3 | 0.9500 |
Co1—N5 | 2.1351 (17) | C4—C5 | 1.493 (3) |
Co1—N1 | 2.1581 (16) | C5—H5A | 0.9800 |
Co1—H22B | 2.17 (2) | C5—H5B | 0.9800 |
F1—C1 | 1.337 (2) | C5—H5C | 0.9800 |
F2—C1 | 1.345 (2) | C6—C7 | 1.489 (3) |
F3—C1 | 1.329 (2) | C7—C8 | 1.368 (3) |
F4—C6 | 1.339 (3) | C8—C9 | 1.397 (3) |
F5—C6 | 1.330 (3) | C8—H8 | 0.9500 |
F6—C6 | 1.338 (3) | C9—C10 | 1.497 (3) |
F7—C11 | 1.341 (3) | C10—H10A | 0.9800 |
F8—C11 | 1.336 (2) | C10—H10B | 0.9800 |
F9—C11 | 1.342 (2) | C10—H10C | 0.9800 |
F10—C16 | 1.337 (3) | C11—C12 | 1.483 (3) |
F11—C16 | 1.328 (3) | C12—C13 | 1.384 (3) |
F12—C16 | 1.323 (3) | C13—C14 | 1.377 (3) |
F13—C21 | 1.326 (3) | C13—H13 | 0.9500 |
F14—C21 | 1.323 (3) | C14—C15 | 1.498 (3) |
F15—C21 | 1.339 (3) | C15—H15A | 0.9800 |
N1—C2 | 1.339 (2) | C15—H15B | 0.9800 |
N1—N2 | 1.364 (2) | C15—H15C | 0.9800 |
N2—C4 | 1.357 (3) | C16—C17 | 1.488 (3) |
N2—B1 | 1.543 (3) | C17—C18 | 1.383 (3) |
N3—C9 | 1.337 (3) | C18—C19 | 1.367 (4) |
N3—N4 | 1.359 (2) | C18—H18 | 0.9500 |
N4—C7 | 1.350 (3) | C19—C20 | 1.493 (3) |
N4—B1 | 1.547 (3) | C20—H20A | 0.9800 |
N5—C12 | 1.338 (3) | C20—H20B | 0.9800 |
N5—N6 | 1.365 (2) | C20—H20C | 0.9800 |
N6—C14 | 1.357 (3) | C21—C22 | 1.490 (4) |
N6—B1 | 1.551 (3) | C22—C23 | 1.384 (3) |
N7—C17 | 1.337 (3) | C23—C24 | 1.382 (4) |
N7—N8 | 1.362 (2) | C23—H23 | 0.9500 |
N8—C19 | 1.350 (3) | C24—C25 | 1.490 (4) |
N8—B2 | 1.546 (3) | C25—H25A | 0.9800 |
N9—C22 | 1.347 (3) | C25—H25B | 0.9800 |
N9—N10 | 1.361 (3) | C25—H25C | 0.9800 |
N10—C24 | 1.350 (3) | B1—H1B | 1.10 (2) |
N10—B2 | 1.554 (3) | B2—H21B | 1.00 (3) |
C1—C2 | 1.486 (3) | B2—H22B | 1.18 (3) |
N3—Co1—N7 | 97.79 (6) | C9—C10—H10B | 109.5 |
N3—Co1—N9 | 96.44 (7) | H10A—C10—H10B | 109.5 |
N7—Co1—N9 | 93.68 (7) | C9—C10—H10C | 109.5 |
N3—Co1—N5 | 92.34 (6) | H10A—C10—H10C | 109.5 |
N7—Co1—N5 | 167.62 (6) | H10B—C10—H10C | 109.5 |
N9—Co1—N5 | 92.23 (7) | F8—C11—F7 | 106.91 (19) |
N3—Co1—N1 | 90.16 (6) | F8—C11—F9 | 106.34 (17) |
N7—Co1—N1 | 91.45 (6) | F7—C11—F9 | 105.8 (2) |
N9—Co1—N1 | 171.01 (6) | F8—C11—C12 | 110.7 (2) |
N5—Co1—N1 | 81.38 (6) | F7—C11—C12 | 112.91 (18) |
N3—Co1—H22B | 165.7 (7) | F9—C11—C12 | 113.67 (19) |
N7—Co1—H22B | 73.2 (7) | N5—C12—C13 | 111.1 (2) |
N9—Co1—H22B | 73.5 (7) | N5—C12—C11 | 122.0 (2) |
N5—Co1—H22B | 98.1 (7) | C13—C12—C11 | 126.9 (2) |
N1—Co1—H22B | 101.0 (7) | C14—C13—C12 | 105.54 (19) |
C2—N1—N2 | 105.35 (15) | C14—C13—H13 | 127.2 |
C2—N1—Co1 | 139.81 (13) | C12—C13—H13 | 127.2 |
N2—N1—Co1 | 114.64 (12) | N6—C14—C13 | 107.4 (2) |
C4—N2—N1 | 110.66 (16) | N6—C14—C15 | 122.9 (2) |
C4—N2—B1 | 128.46 (16) | C13—C14—C15 | 129.7 (2) |
N1—N2—B1 | 120.82 (15) | C14—C15—H15A | 109.5 |
C9—N3—N4 | 107.49 (16) | C14—C15—H15B | 109.5 |
C9—N3—Co1 | 134.68 (14) | H15A—C15—H15B | 109.5 |
N4—N3—Co1 | 117.56 (12) | C14—C15—H15C | 109.5 |
C7—N4—N3 | 108.89 (17) | H15A—C15—H15C | 109.5 |
C7—N4—B1 | 131.52 (17) | H15B—C15—H15C | 109.5 |
N3—N4—B1 | 119.49 (16) | F12—C16—F11 | 106.0 (2) |
C12—N5—N6 | 105.62 (16) | F12—C16—F10 | 107.54 (19) |
C12—N5—Co1 | 139.42 (15) | F11—C16—F10 | 106.13 (19) |
N6—N5—Co1 | 114.30 (12) | F12—C16—C17 | 114.03 (17) |
C14—N6—N5 | 110.41 (17) | F11—C16—C17 | 112.59 (19) |
C14—N6—B1 | 128.35 (18) | F10—C16—C17 | 110.1 (2) |
N5—N6—B1 | 120.71 (16) | N7—C17—C18 | 111.1 (2) |
C17—N7—N8 | 105.45 (16) | N7—C17—C16 | 123.54 (19) |
C17—N7—Co1 | 146.16 (14) | C18—C17—C16 | 125.3 (2) |
N8—N7—Co1 | 108.08 (12) | C19—C18—C17 | 105.3 (2) |
C19—N8—N7 | 110.21 (18) | C19—C18—H18 | 127.4 |
C19—N8—B2 | 134.25 (19) | C17—C18—H18 | 127.4 |
N7—N8—B2 | 115.54 (16) | N8—C19—C18 | 107.99 (19) |
C22—N9—N10 | 105.65 (18) | N8—C19—C20 | 121.9 (3) |
C22—N9—Co1 | 145.42 (17) | C18—C19—C20 | 130.1 (2) |
N10—N9—Co1 | 108.92 (13) | C19—C20—H20A | 109.5 |
C24—N10—N9 | 110.6 (2) | C19—C20—H20B | 109.5 |
C24—N10—B2 | 134.7 (2) | H20A—C20—H20B | 109.5 |
N9—N10—B2 | 114.60 (16) | C19—C20—H20C | 109.5 |
F3—C1—F1 | 107.30 (17) | H20A—C20—H20C | 109.5 |
F3—C1—F2 | 106.26 (17) | H20B—C20—H20C | 109.5 |
F1—C1—F2 | 105.33 (17) | F14—C21—F13 | 107.5 (2) |
F3—C1—C2 | 113.39 (17) | F14—C21—F15 | 105.4 (2) |
F1—C1—C2 | 110.93 (17) | F13—C21—F15 | 103.9 (2) |
F2—C1—C2 | 113.11 (17) | F14—C21—C22 | 111.4 (2) |
N1—C2—C3 | 111.40 (17) | F13—C21—C22 | 113.8 (2) |
N1—C2—C1 | 122.25 (17) | F15—C21—C22 | 114.20 (19) |
C3—C2—C1 | 126.34 (18) | N9—C22—C23 | 110.7 (2) |
C4—C3—C2 | 104.99 (18) | N9—C22—C21 | 122.1 (2) |
C4—C3—H3 | 127.5 | C23—C22—C21 | 127.1 (2) |
C2—C3—H3 | 127.5 | C24—C23—C22 | 105.4 (2) |
N2—C4—C3 | 107.60 (17) | C24—C23—H23 | 127.3 |
N2—C4—C5 | 122.97 (19) | C22—C23—H23 | 127.3 |
C3—C4—C5 | 129.40 (19) | N10—C24—C23 | 107.6 (2) |
C4—C5—H5A | 109.5 | N10—C24—C25 | 122.2 (3) |
C4—C5—H5B | 109.5 | C23—C24—C25 | 130.2 (2) |
H5A—C5—H5B | 109.5 | C24—C25—H25A | 109.5 |
C4—C5—H5C | 109.5 | C24—C25—H25B | 109.5 |
H5A—C5—H5C | 109.5 | H25A—C25—H25B | 109.5 |
H5B—C5—H5C | 109.5 | C24—C25—H25C | 109.5 |
F5—C6—F6 | 107.6 (2) | H25A—C25—H25C | 109.5 |
F5—C6—F4 | 106.9 (2) | H25B—C25—H25C | 109.5 |
F6—C6—F4 | 106.81 (19) | N2—B1—N4 | 109.02 (16) |
F5—C6—C7 | 112.75 (19) | N2—B1—N6 | 107.77 (16) |
F6—C6—C7 | 109.7 (2) | N4—B1—N6 | 110.19 (16) |
F4—C6—C7 | 112.67 (19) | N2—B1—H1B | 111.4 (12) |
N4—C7—C8 | 108.87 (19) | N4—B1—H1B | 110.1 (11) |
N4—C7—C6 | 123.0 (2) | N6—B1—H1B | 108.3 (12) |
C8—C7—C6 | 128.2 (2) | N8—B2—N10 | 108.37 (17) |
C7—C8—C9 | 105.33 (19) | N8—B2—H21B | 113.9 (16) |
C7—C8—H8 | 127.3 | N10—B2—H21B | 113.7 (15) |
C9—C8—H8 | 127.3 | N8—B2—H22B | 105.1 (12) |
N3—C9—C8 | 109.43 (19) | N10—B2—H22B | 105.5 (12) |
N3—C9—C10 | 122.69 (18) | H21B—B2—H22B | 109.6 (19) |
C8—C9—C10 | 127.88 (19) | B2—H22B—Co1 | 107 (1) |
C9—C10—H10A | 109.5 | ||
N3—Co1—N1—C2 | 136.1 (2) | N3—N4—C7—C6 | 179.51 (19) |
N7—Co1—N1—C2 | 38.3 (2) | B1—N4—C7—C6 | 3.4 (3) |
N5—Co1—N1—C2 | −131.5 (2) | F5—C6—C7—N4 | −65.0 (3) |
H22B—Co1—N1—C2 | −34.9 (7) | F6—C6—C7—N4 | 175.1 (2) |
N3—Co1—N1—N2 | −37.84 (12) | F4—C6—C7—N4 | 56.2 (3) |
N7—Co1—N1—N2 | −135.64 (12) | F5—C6—C7—C8 | 114.7 (3) |
N5—Co1—N1—N2 | 54.51 (12) | F6—C6—C7—C8 | −5.3 (3) |
H22B—Co1—N1—N2 | 151.2 (7) | F4—C6—C7—C8 | −124.1 (2) |
C2—N1—N2—C4 | −0.4 (2) | N4—C7—C8—C9 | −0.1 (2) |
Co1—N1—N2—C4 | 175.57 (12) | C6—C7—C8—C9 | −179.8 (2) |
C2—N1—N2—B1 | 176.91 (16) | N4—N3—C9—C8 | −0.5 (2) |
Co1—N1—N2—B1 | −7.1 (2) | Co1—N3—C9—C8 | 173.09 (15) |
N7—Co1—N3—C9 | −41.0 (2) | N4—N3—C9—C10 | 179.22 (18) |
N9—Co1—N3—C9 | 53.6 (2) | Co1—N3—C9—C10 | −7.2 (3) |
N5—Co1—N3—C9 | 146.09 (19) | C7—C8—C9—N3 | 0.4 (2) |
N1—Co1—N3—C9 | −132.53 (19) | C7—C8—C9—C10 | −179.3 (2) |
H22B—Co1—N3—C9 | 9 (3) | N6—N5—C12—C13 | −0.5 (2) |
N7—Co1—N3—N4 | 132.08 (13) | Co1—N5—C12—C13 | 168.92 (17) |
N9—Co1—N3—N4 | −133.29 (13) | N6—N5—C12—C11 | 177.70 (18) |
N5—Co1—N3—N4 | −40.79 (14) | Co1—N5—C12—C11 | −12.9 (3) |
N1—Co1—N3—N4 | 40.59 (14) | F8—C11—C12—N5 | −166.19 (19) |
H22B—Co1—N3—N4 | −178 (3) | F7—C11—C12—N5 | −46.4 (3) |
C9—N3—N4—C7 | 0.4 (2) | F9—C11—C12—N5 | 74.2 (3) |
Co1—N3—N4—C7 | −174.44 (13) | F8—C11—C12—C13 | 11.7 (3) |
C9—N3—N4—B1 | 177.10 (17) | F7—C11—C12—C13 | 131.5 (2) |
Co1—N3—N4—B1 | 2.2 (2) | F9—C11—C12—C13 | −107.9 (3) |
N3—Co1—N5—C12 | −137.6 (2) | N5—C12—C13—C14 | 0.7 (3) |
N7—Co1—N5—C12 | 77.4 (4) | C11—C12—C13—C14 | −177.4 (2) |
N9—Co1—N5—C12 | −41.1 (2) | N5—N6—C14—C13 | 0.2 (2) |
N1—Co1—N5—C12 | 132.6 (2) | B1—N6—C14—C13 | 171.8 (2) |
H22B—Co1—N5—C12 | 32.6 (7) | N5—N6—C14—C15 | −179.2 (2) |
N3—Co1—N5—N6 | 31.20 (13) | B1—N6—C14—C15 | −7.6 (4) |
N7—Co1—N5—N6 | −113.8 (3) | C12—C13—C14—N6 | −0.5 (3) |
N9—Co1—N5—N6 | 127.74 (13) | C12—C13—C14—C15 | 178.9 (3) |
N1—Co1—N5—N6 | −58.61 (13) | N8—N7—C17—C18 | −0.7 (2) |
H22B—Co1—N5—N6 | −158.6 (7) | Co1—N7—C17—C18 | 171.47 (18) |
C12—N5—N6—C14 | 0.2 (2) | N8—N7—C17—C16 | 176.13 (18) |
Co1—N5—N6—C14 | −172.32 (14) | Co1—N7—C17—C16 | −11.7 (4) |
C12—N5—N6—B1 | −172.15 (17) | F12—C16—C17—N7 | −14.3 (3) |
Co1—N5—N6—B1 | 15.4 (2) | F11—C16—C17—N7 | 106.5 (2) |
N3—Co1—N7—C17 | −28.7 (2) | F10—C16—C17—N7 | −135.3 (2) |
N9—Co1—N7—C17 | −125.7 (2) | F12—C16—C17—C18 | 162.0 (2) |
N5—Co1—N7—C17 | 116.0 (3) | F11—C16—C17—C18 | −77.1 (3) |
N1—Co1—N7—C17 | 61.7 (2) | F10—C16—C17—C18 | 41.1 (3) |
H22B—Co1—N7—C17 | 162.7 (7) | N7—C17—C18—C19 | 0.5 (3) |
N3—Co1—N7—N8 | 143.38 (12) | C16—C17—C18—C19 | −176.3 (2) |
N9—Co1—N7—N8 | 46.36 (12) | N7—N8—C19—C18 | −0.3 (2) |
N5—Co1—N7—N8 | −72.0 (3) | B2—N8—C19—C18 | 178.6 (2) |
N1—Co1—N7—N8 | −126.26 (12) | N7—N8—C19—C20 | −179.9 (2) |
H22B—Co1—N7—N8 | −25.2 (7) | B2—N8—C19—C20 | −0.9 (4) |
C17—N7—N8—C19 | 0.6 (2) | C17—C18—C19—N8 | −0.1 (2) |
Co1—N7—N8—C19 | −174.78 (13) | C17—C18—C19—C20 | 179.4 (2) |
C17—N7—N8—B2 | −178.54 (17) | N10—N9—C22—C23 | 0.6 (2) |
Co1—N7—N8—B2 | 6.0 (2) | Co1—N9—C22—C23 | 178.91 (19) |
N3—Co1—N9—C22 | 34.9 (3) | N10—N9—C22—C21 | −178.06 (19) |
N7—Co1—N9—C22 | 133.2 (3) | Co1—N9—C22—C21 | 0.3 (4) |
N5—Co1—N9—C22 | −57.7 (3) | F14—C21—C22—N9 | 158.1 (2) |
H22B—Co1—N9—C22 | −155.5 (8) | F13—C21—C22—N9 | 36.4 (3) |
N3—Co1—N9—N10 | −146.81 (12) | F15—C21—C22—N9 | −82.7 (3) |
N7—Co1—N9—N10 | −48.53 (13) | F14—C21—C22—C23 | −20.3 (3) |
N5—Co1—N9—N10 | 120.58 (13) | F13—C21—C22—C23 | −142.0 (2) |
H22B—Co1—N9—N10 | 22.8 (7) | F15—C21—C22—C23 | 98.9 (3) |
C22—N9—N10—C24 | −0.7 (2) | N9—C22—C23—C24 | −0.3 (2) |
Co1—N9—N10—C24 | −179.68 (13) | C21—C22—C23—C24 | 178.3 (2) |
C22—N9—N10—B2 | 176.42 (17) | N9—N10—C24—C23 | 0.5 (2) |
Co1—N9—N10—B2 | −2.6 (2) | B2—N10—C24—C23 | −175.8 (2) |
N2—N1—C2—C3 | 0.8 (2) | N9—N10—C24—C25 | −178.1 (2) |
Co1—N1—C2—C3 | −173.55 (14) | B2—N10—C24—C25 | 5.6 (4) |
N2—N1—C2—C1 | −177.99 (17) | C22—C23—C24—N10 | −0.2 (2) |
Co1—N1—C2—C1 | 7.7 (3) | C22—C23—C24—C25 | 178.3 (2) |
F3—C1—C2—N1 | 35.8 (3) | C4—N2—B1—N4 | −119.1 (2) |
F1—C1—C2—N1 | 156.65 (18) | N1—N2—B1—N4 | 64.2 (2) |
F2—C1—C2—N1 | −85.3 (2) | C4—N2—B1—N6 | 121.4 (2) |
F3—C1—C2—C3 | −142.7 (2) | N1—N2—B1—N6 | −55.4 (2) |
F1—C1—C2—C3 | −21.9 (3) | C7—N4—B1—N2 | 114.3 (2) |
F2—C1—C2—C3 | 96.2 (2) | N3—N4—B1—N2 | −61.4 (2) |
N1—C2—C3—C4 | −0.8 (2) | C7—N4—B1—N6 | −127.6 (2) |
C1—C2—C3—C4 | 177.86 (19) | N3—N4—B1—N6 | 56.6 (2) |
N1—N2—C4—C3 | −0.1 (2) | C14—N6—B1—N2 | −120.1 (2) |
B1—N2—C4—C3 | −177.15 (18) | N5—N6—B1—N2 | 50.7 (2) |
N1—N2—C4—C5 | 177.78 (19) | C14—N6—B1—N4 | 121.0 (2) |
B1—N2—C4—C5 | 0.7 (3) | N5—N6—B1—N4 | −68.2 (2) |
C2—C3—C4—N2 | 0.6 (2) | C19—N8—B2—N10 | 104.5 (3) |
C2—C3—C4—C5 | −177.2 (2) | N7—N8—B2—N10 | −76.6 (2) |
N3—N4—C7—C8 | −0.2 (2) | C24—N10—B2—N8 | −110.2 (2) |
B1—N4—C7—C8 | −176.3 (2) | N9—N10—B2—N8 | 73.6 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5B···F9i | 0.98 | 2.48 | 3.391 (3) | 155 |
C10—H10C···F11 | 0.98 | 2.40 | 3.160 (3) | 134 |
C25—H25B···F10ii | 0.98 | 2.50 | 3.414 (4) | 155 |
Symmetry codes: (i) x+1, y, z; (ii) x−1, y, z. |
Experimental details
Crystal data | |
Chemical formula | [Co(C10H10BF6N4)(C15H13BF9N6)] |
Mr | 829.08 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 100 |
a, b, c (Å) | 10.8195 (16), 16.559 (2), 18.687 (3) |
β (°) | 98.408 (3) |
V (Å3) | 3312.0 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.64 |
Crystal size (mm) | 0.37 × 0.30 × 0.14 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Blessing, 1995) |
Tmin, Tmax | 0.919, 1.00 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 33535, 7286, 6292 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.641 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.108, 1.00 |
No. of reflections | 7286 |
No. of parameters | 495 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.69, −0.44 |
Computer programs: SMART (Bruker, 2000), SAINT-Plus (Bruker, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEPIII (Burnett & Johnson, 1996) and ORTEP-32 (Farrugia, 1997), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Co1—N3 | 2.0850 (17) | Co1—H22B | 2.17 (2) |
Co1—N7 | 2.1072 (17) | B1—H1B | 1.10 (2) |
Co1—N9 | 2.1115 (18) | B2—H21B | 1.00 (3) |
Co1—N5 | 2.1351 (17) | B2—H22B | 1.18 (3) |
Co1—N1 | 2.1581 (16) | ||
H21B—B2—H22B | 109.6 (19) | B2—H22B—Co1 | 107 (1) |
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5B···F9i | 0.98 | 2.48 | 3.391 (3) | 155 |
C10—H10C···F11 | 0.98 | 2.40 | 3.160 (3) | 134 |
C25—H25B···F10ii | 0.98 | 2.50 | 3.414 (4) | 155 |
Symmetry codes: (i) x+1, y, z; (ii) x−1, y, z. |
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Our long-term interest in the synthesis and applications of nitrogen-containing heterocyles, such as expanded-ring imidazoles, and their complexes with metal ions (Stibrany & Potenza, 2009a) led us to prepare the title compound (I). With pyrazole, a variety of metal complexes has been prepared, predominantly with copper (Stibrany & Potenza, 2006), including the Cu(II) complex of an unusual (dimethylamino)methane bridged bis(pyrazole) ligand formed via a DMF aminalization (Stibrany et al., 1999) and a novel binuclear µ-oxalato(1-benzylpyrazole)2(CF3SO3)2copper(II) compound resulting from the fixation of carbon dioxide (Stibrany et al., 2005). A tris(pyrazolyl)arene ligand which forms geometrically constrained metal complexes has also been prepared (Stibrany et al., 2006),as has a sterically strained trigonal-bipyramidal Cu(II) complex containing a 1-benzylpyrazole ligand (Stibrany & Potenza, 2009b). Copper and cobalt complexes utlizing the title ligand were prepared for oxidation studies (Gorun et al., 2000).
Compound (I) (Fig. 1) contains a central CoII ion linked to a Tp and a Bp ligand. Ligation is effected by three imine N atoms of the Tp ligand, two imine N atoms of the Bp ligand, and an H atom which participates in a two-electron, three-center B—H···Co bond. The result is a distorted octahedral coordination geometry.
A number of cobalt(II) complexes containing mixed bis (Bp)- and tris pyrazolylborates (Tp) and C—H···Co agostic interactions have been reported, with H···Co distances ranging from 2.03 Å (Ruman et al., 2002), 2.035 Å (Ruman et al., 2001) to 2.334 Å (Siemer et al.., 2001). The H···Co distance in (I), 2.17 Å, lies between these two extremes. Infrared spectral results also support the existence of an agostic 2-electron, 3-center bond in (I). B—H stretching vibrations for BH2 groups in which one of the H atoms is involved in a 2-electron, 3-center bond with a metal ion typically lie in the range 2100-2500 cm-1, with the lower value corresponding to the agostic interaction (Ghosh et al., 1998). In (I), IR bands at 2569 and 2483 cm-1 are assigned as free B—H stretching vibrations, while the band at 2223 cm-1 is assigned to the bound B—H group.
In the crystal, the molecules form layers parallel to the (10 -1) planes (Figures 2 and 3), which are linked by intermolecular C—H···F hydrogen bonds (Table 1) in such a way as to form chains along the a cell direction. Platon (Spek, 2009) reveals11 short intermolecular contacts, 10 of which are C—H···F interactions, which, along with the C—H···F hydrogen bonds noted above suggest that the trifluoromethyl groups in (I) contribute substantially to the stability of the structure.