organic compounds
2,6-Bis(1-isopropyl-5-phenyl-1H-pyrazol-3-yl)pyridine
aSchool of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan 453003, People's Republic of China, bDepartment of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, People's Republic of China, and cDepartment of Agriculture, Guangshan County, Henan 465400, People's Republic of China
*Correspondence e-mail: zybdjy@163.com
In the title compound, C29H29N5, the central pyridine ring and the two pyrazole rings are approximately coplanar, the dihedral angles between the pyridine and pyrazole rings being 3.94 (12) and 14.84 (12)°. The pyrazole and phenyl rings on each side of the molecule are twisted with dihedral angles of 46.72 (8) and 73.39 (8)°. One phenyl ring interacts with a pyrazole ring of a neighbouring molecule via a weak intermolecular C—H⋯π interaction, which stabilizes the molecular packing.
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2001); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and publCIF (Westrip, 2008).
Supporting information
https://doi.org/10.1107/S1600536807065191/is2264sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807065191/is2264Isup2.hkl
All chemicals were of reagent grade quality obtained from commercial sources and used as received, unless stated otherwise. 2,6-bis(5-phenyl-1H-pyrazol-3-yl)pyridine (bppp) was prepared by the general procedure of Zhou and Chen (2007). A mixture of bppp (0.72 g, 2 mmol) and 60% NaH (0.32 g, 8 mmol) in dry DMF (15 ml) was stirred for 2 h at room temperature. To the solution was added 2-bromopropane (0.98 g, 8 mmol). After stirring at 333 K for two days, the resulting solution was concentrated to 4 ml. Addition of H2O (15 ml) precipitated a pale yellow powder. δ 151.8, 150.5, 144.5, 130.6, 129.3, 129.2, 129.0, 125.14, 118.1, 104.8, 50.3, 23.2, 23.1. Colorless single crystals were grown from slow evaporation of a saturated MeOH solution of the compound.
involved elution with ethyl acetate/ petroleum ether (1:4) separated the compound as a white powder (0.56 g). Yield: 62%. Anal. Calcd for C29H29N5: C 77.82, H 6.53, N 15.65; Found: C 77.60, H 6.62, N 15.57. MS (m/z): 447 (M+, 100), 432, 405, 390, 363, 334, 304, 195, 168, 115, 77. 1H NMR (DMSO-d6): 7.90 (br, 3H), 7.56–7.48 (m, 10H), 6.99 (s, 2H), 4.58(m, 2H), 1.47(s, 6H), 1.45 (s, 6H). 13C NMR (100 MHz, DMSO-d6):H atoms were positioned geometrically and treated as riding, with C—H bonding lengths constrained to 0.93 (aromatic CH), 0.98 (methylene CH), or 0.96 Å (methyl CH3), and with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(methyl C).
Pyrazolyl ligands are a kind of mutifuntional organic ligands often displaying exo-bidentate coordination mode (Dias & Gamage, 2007). The title compound, 2,6-bis(5-phenyl-1-isopropyl-1H-pyrazol-3-yl)pyridine (hereinafter abbreviated to bpipp), is a potentially tridentate pincer ligand by N-alkylation of a bispyrazolyl ligand.
The π interaction (Table 1; Cg1 is the centroid of the C6—C8/N2/N3 pyrazole ring) which stabilizes the molecular packing. The centroid to centroid distance between stacked pyridine rings is ca 4.88 Å, which is very long and prevents π-π stacking (Fig. 2). All bond lengths and angles are normal.
of the title compound contains only one bpipp molecule (Fig. 1). The pyrazole and pyridine rings are near-coplanar [inter-ring dihedral angles 3.94 (12) and 14.84 (12)°], whereas the pyrazole rings are twisted from the phenyl rings with the two dihedral angles 46.72 (8) and 73.39 (8)°. The phenyl ring interacts with the pyrazole ring of the neighbouring molecule to afford a weak intermolecular C—H···For general background, see: Dias & Gamage (2007); Zhou & Chen (2007). Cg1 is the centroid of the C6—C8/N2/N3 pyrazole ring.
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXTL (Sheldrick, 2001); program(s) used to refine structure: SHELXTL (Sheldrick, 2001); molecular graphics: SHELXTL (Sheldrick, 2001); software used to prepare material for publication: SHELXTL (Sheldrick, 2001) and publCIF (Westrip, 2008).C29H29N5 | Z = 2 |
Mr = 447.57 | F(000) = 476 |
Triclinic, P1 | Dx = 1.192 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.973 (3) Å | Cell parameters from 1546 reflections |
b = 10.172 (3) Å | θ = 2.8–21.8° |
c = 14.014 (4) Å | µ = 0.07 mm−1 |
α = 110.940 (4)° | T = 298 K |
β = 106.494 (4)° | Prism, colorless |
γ = 94.583 (4)° | 0.53 × 0.43 × 0.39 mm |
V = 1246.8 (6) Å3 |
SMART 1K CCD area-detector diffractometer | 4332 independent reflections |
Radiation source: fine-focus sealed tube | 2417 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.023 |
φ and ω scans | θmax = 25.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2002) | h = −11→7 |
Tmin = 0.963, Tmax = 0.972 | k = −10→12 |
6572 measured reflections | l = −15→16 |
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)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.123 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0483P)2 + 0.0355P] where P = (Fo2 + 2Fc2)/3 |
4332 reflections | (Δ/σ)max < 0.001 |
307 parameters | Δρmax = 0.14 e Å−3 |
0 restraints | Δρmin = −0.18 e Å−3 |
C29H29N5 | γ = 94.583 (4)° |
Mr = 447.57 | V = 1246.8 (6) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.973 (3) Å | Mo Kα radiation |
b = 10.172 (3) Å | µ = 0.07 mm−1 |
c = 14.014 (4) Å | T = 298 K |
α = 110.940 (4)° | 0.53 × 0.43 × 0.39 mm |
β = 106.494 (4)° |
SMART 1K CCD area-detector diffractometer | 4332 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2002) | 2417 reflections with I > 2σ(I) |
Tmin = 0.963, Tmax = 0.972 | Rint = 0.023 |
6572 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.123 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.14 e Å−3 |
4332 reflections | Δρmin = −0.18 e Å−3 |
307 parameters |
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. |
Refinement. Refinement of F^2^ against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F^2^, conventional R-factors R are based on F, with F set to zero for negative F^2^. The threshold expression of F^2^ > σ(F^2^) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F^2^ 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 | ||
N1 | 0.49140 (17) | 0.25670 (17) | 0.32171 (13) | 0.0437 (5) | |
N2 | 0.75204 (19) | 0.58665 (18) | 0.45974 (14) | 0.0507 (5) | |
N3 | 0.77219 (19) | 0.67986 (18) | 0.41370 (14) | 0.0510 (5) | |
N4 | 0.28141 (19) | −0.09220 (18) | 0.24676 (14) | 0.0522 (5) | |
N5 | 0.19993 (19) | −0.17780 (17) | 0.14410 (14) | 0.0519 (5) | |
C1 | 0.4400 (2) | 0.1424 (2) | 0.33672 (17) | 0.0419 (5) | |
C2 | 0.4774 (2) | 0.1347 (2) | 0.43729 (17) | 0.0494 (6) | |
H2 | 0.4400 | 0.0539 | 0.4450 | 0.059* | |
C3 | 0.5705 (2) | 0.2481 (2) | 0.52506 (18) | 0.0520 (6) | |
H3 | 0.5976 | 0.2451 | 0.5933 | 0.062* | |
C4 | 0.6235 (2) | 0.3662 (2) | 0.51153 (17) | 0.0491 (6) | |
H4 | 0.6857 | 0.4449 | 0.5705 | 0.059* | |
C5 | 0.5832 (2) | 0.3665 (2) | 0.40889 (17) | 0.0412 (5) | |
C6 | 0.6374 (2) | 0.4876 (2) | 0.38672 (17) | 0.0437 (5) | |
C7 | 0.5864 (2) | 0.5158 (2) | 0.29458 (17) | 0.0473 (6) | |
H7 | 0.5088 | 0.4614 | 0.2327 | 0.057* | |
C8 | 0.6735 (2) | 0.6402 (2) | 0.31321 (18) | 0.0468 (6) | |
C9 | 0.6679 (2) | 0.7231 (2) | 0.24527 (19) | 0.0492 (6) | |
C10 | 0.6480 (3) | 0.6519 (3) | 0.1365 (2) | 0.0699 (8) | |
H10 | 0.6402 | 0.5528 | 0.1073 | 0.084* | |
C11 | 0.6396 (3) | 0.7265 (4) | 0.0706 (2) | 0.0927 (10) | |
H11 | 0.6257 | 0.6775 | −0.0027 | 0.111* | |
C12 | 0.6517 (3) | 0.8726 (4) | 0.1130 (3) | 0.0894 (9) | |
H12 | 0.6478 | 0.9227 | 0.0687 | 0.107* | |
C13 | 0.6693 (3) | 0.9441 (3) | 0.2190 (3) | 0.0743 (8) | |
H13 | 0.6771 | 1.0433 | 0.2475 | 0.089* | |
C14 | 0.6757 (3) | 0.8699 (3) | 0.2845 (2) | 0.0623 (7) | |
H14 | 0.6856 | 0.9196 | 0.3569 | 0.075* | |
C15 | 0.3432 (2) | 0.0234 (2) | 0.23969 (17) | 0.0436 (5) | |
C16 | 0.3022 (2) | 0.0097 (2) | 0.13208 (17) | 0.0489 (6) | |
H16 | 0.3311 | 0.0759 | 0.1065 | 0.059* | |
C17 | 0.2110 (2) | −0.1202 (2) | 0.07220 (16) | 0.0454 (6) | |
C18 | 0.1321 (3) | −0.1941 (2) | −0.04508 (17) | 0.0469 (6) | |
C19 | 0.2024 (3) | −0.2537 (3) | −0.1166 (2) | 0.0655 (7) | |
H19 | 0.3005 | −0.2471 | −0.0907 | 0.079* | |
C20 | 0.1282 (3) | −0.3234 (3) | −0.2265 (2) | 0.0724 (8) | |
H20 | 0.1766 | −0.3643 | −0.2740 | 0.087* | |
C21 | −0.0148 (3) | −0.3324 (2) | −0.2656 (2) | 0.0632 (7) | |
H21 | −0.0641 | −0.3793 | −0.3397 | 0.076* | |
C22 | −0.0861 (3) | −0.2729 (3) | −0.1964 (2) | 0.0647 (7) | |
H22 | −0.1841 | −0.2792 | −0.2230 | 0.078* | |
C23 | −0.0128 (3) | −0.2035 (2) | −0.08679 (19) | 0.0603 (7) | |
H23 | −0.0620 | −0.1621 | −0.0401 | 0.072* | |
C24 | 0.9034 (2) | 0.7923 (2) | 0.46856 (19) | 0.0549 (6) | |
H24 | 0.9062 | 0.8436 | 0.4216 | 0.066* | |
C25 | 1.0336 (3) | 0.7258 (3) | 0.4818 (2) | 0.0694 (7) | |
H25A | 1.0305 | 0.6584 | 0.4122 | 0.104* | |
H25B | 1.0354 | 0.6768 | 0.5292 | 0.104* | |
H25C | 1.1180 | 0.7998 | 0.5123 | 0.104* | |
C26 | 0.8991 (3) | 0.8999 (2) | 0.5743 (2) | 0.0707 (8) | |
H26A | 0.8147 | 0.9392 | 0.5609 | 0.106* | |
H26B | 0.9820 | 0.9759 | 0.6067 | 0.106* | |
H26C | 0.8978 | 0.8530 | 0.6227 | 0.106* | |
C27 | 0.1273 (3) | −0.3221 (2) | 0.12085 (19) | 0.0606 (7) | |
H27 | 0.0613 | −0.3627 | 0.0459 | 0.073* | |
C28 | 0.0417 (3) | −0.3145 (3) | 0.1945 (3) | 0.1074 (11) | |
H28A | −0.0257 | −0.2539 | 0.1854 | 0.161* | |
H28B | 0.1046 | −0.2755 | 0.2684 | 0.161* | |
H28C | −0.0085 | −0.4093 | 0.1766 | 0.161* | |
C29 | 0.2353 (3) | −0.4163 (3) | 0.1301 (2) | 0.0955 (10) | |
H29A | 0.2869 | −0.4181 | 0.0815 | 0.143* | |
H29B | 0.1870 | −0.5121 | 0.1116 | 0.143* | |
H29C | 0.3007 | −0.3787 | 0.2032 | 0.143* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0443 (11) | 0.0382 (10) | 0.0421 (11) | −0.0014 (9) | 0.0103 (9) | 0.0141 (9) |
N2 | 0.0509 (12) | 0.0475 (11) | 0.0481 (11) | −0.0066 (9) | 0.0097 (10) | 0.0214 (9) |
N3 | 0.0506 (12) | 0.0459 (11) | 0.0497 (12) | −0.0065 (9) | 0.0095 (10) | 0.0205 (9) |
N4 | 0.0565 (12) | 0.0441 (11) | 0.0403 (11) | −0.0105 (9) | 0.0036 (9) | 0.0132 (9) |
N5 | 0.0594 (13) | 0.0424 (11) | 0.0393 (11) | −0.0091 (9) | 0.0037 (10) | 0.0137 (9) |
C1 | 0.0401 (13) | 0.0374 (12) | 0.0413 (13) | 0.0013 (10) | 0.0089 (10) | 0.0131 (10) |
C2 | 0.0519 (14) | 0.0473 (13) | 0.0439 (14) | −0.0016 (11) | 0.0075 (12) | 0.0214 (11) |
C3 | 0.0570 (15) | 0.0535 (14) | 0.0390 (13) | −0.0010 (12) | 0.0081 (12) | 0.0197 (11) |
C4 | 0.0458 (14) | 0.0482 (14) | 0.0410 (14) | −0.0025 (11) | 0.0067 (11) | 0.0124 (11) |
C5 | 0.0390 (12) | 0.0383 (12) | 0.0410 (13) | 0.0022 (10) | 0.0116 (10) | 0.0124 (10) |
C6 | 0.0414 (13) | 0.0403 (12) | 0.0429 (14) | 0.0002 (10) | 0.0125 (11) | 0.0123 (10) |
C7 | 0.0460 (14) | 0.0445 (13) | 0.0404 (13) | −0.0023 (11) | 0.0077 (11) | 0.0121 (11) |
C8 | 0.0447 (14) | 0.0465 (13) | 0.0443 (14) | 0.0037 (11) | 0.0114 (11) | 0.0166 (11) |
C9 | 0.0435 (14) | 0.0525 (14) | 0.0516 (15) | 0.0037 (11) | 0.0138 (11) | 0.0239 (12) |
C10 | 0.091 (2) | 0.0616 (16) | 0.0548 (17) | 0.0085 (15) | 0.0238 (15) | 0.0228 (14) |
C11 | 0.132 (3) | 0.098 (2) | 0.0558 (19) | 0.021 (2) | 0.0343 (18) | 0.0376 (18) |
C12 | 0.120 (3) | 0.090 (2) | 0.084 (2) | 0.027 (2) | 0.042 (2) | 0.057 (2) |
C13 | 0.090 (2) | 0.0635 (17) | 0.088 (2) | 0.0216 (15) | 0.0353 (18) | 0.0445 (17) |
C14 | 0.0726 (18) | 0.0569 (16) | 0.0619 (17) | 0.0134 (13) | 0.0242 (14) | 0.0274 (14) |
C15 | 0.0450 (13) | 0.0386 (12) | 0.0415 (13) | −0.0004 (10) | 0.0093 (11) | 0.0154 (10) |
C16 | 0.0562 (15) | 0.0434 (13) | 0.0432 (14) | −0.0009 (11) | 0.0111 (11) | 0.0195 (11) |
C17 | 0.0489 (14) | 0.0437 (13) | 0.0372 (13) | 0.0027 (11) | 0.0072 (11) | 0.0157 (11) |
C18 | 0.0556 (15) | 0.0380 (12) | 0.0382 (13) | 0.0017 (11) | 0.0077 (12) | 0.0131 (10) |
C19 | 0.0613 (17) | 0.0722 (17) | 0.0494 (17) | 0.0066 (14) | 0.0105 (14) | 0.0167 (14) |
C20 | 0.079 (2) | 0.0789 (19) | 0.0476 (17) | 0.0149 (16) | 0.0219 (15) | 0.0116 (14) |
C21 | 0.082 (2) | 0.0518 (15) | 0.0399 (15) | 0.0044 (14) | 0.0058 (15) | 0.0136 (12) |
C22 | 0.0591 (17) | 0.0623 (16) | 0.0521 (17) | 0.0051 (13) | −0.0022 (14) | 0.0172 (13) |
C23 | 0.0582 (17) | 0.0623 (16) | 0.0450 (15) | 0.0106 (13) | 0.0088 (13) | 0.0110 (12) |
C24 | 0.0507 (15) | 0.0502 (14) | 0.0573 (16) | −0.0097 (12) | 0.0108 (12) | 0.0239 (12) |
C25 | 0.0542 (17) | 0.0721 (17) | 0.0763 (19) | 0.0010 (14) | 0.0205 (14) | 0.0266 (14) |
C26 | 0.0722 (18) | 0.0486 (15) | 0.0715 (18) | −0.0080 (13) | 0.0199 (15) | 0.0092 (13) |
C27 | 0.0692 (17) | 0.0422 (14) | 0.0496 (15) | −0.0176 (13) | −0.0001 (13) | 0.0164 (12) |
C28 | 0.107 (3) | 0.091 (2) | 0.120 (3) | −0.0275 (19) | 0.048 (2) | 0.038 (2) |
C29 | 0.106 (2) | 0.0529 (17) | 0.105 (3) | 0.0048 (17) | 0.016 (2) | 0.0243 (16) |
N1—C1 | 1.341 (2) | C15—C16 | 1.397 (3) |
N1—C5 | 1.343 (2) | C16—C17 | 1.364 (3) |
N2—C6 | 1.335 (2) | C16—H16 | 0.9300 |
N2—N3 | 1.355 (2) | C17—C18 | 1.474 (3) |
N3—C8 | 1.363 (2) | C18—C19 | 1.377 (3) |
N3—C24 | 1.474 (2) | C18—C23 | 1.378 (3) |
N4—C15 | 1.332 (2) | C19—C20 | 1.383 (3) |
N4—N5 | 1.348 (2) | C19—H19 | 0.9300 |
N5—C17 | 1.358 (3) | C20—C21 | 1.357 (3) |
N5—C27 | 1.463 (2) | C20—H20 | 0.9300 |
C1—C2 | 1.385 (3) | C21—C22 | 1.362 (3) |
C1—C15 | 1.462 (3) | C21—H21 | 0.9300 |
C2—C3 | 1.368 (3) | C22—C23 | 1.377 (3) |
C2—H2 | 0.9300 | C22—H22 | 0.9300 |
C3—C4 | 1.370 (3) | C23—H23 | 0.9300 |
C3—H3 | 0.9300 | C24—C25 | 1.507 (3) |
C4—C5 | 1.380 (3) | C24—C26 | 1.510 (3) |
C4—H4 | 0.9300 | C24—H24 | 0.9800 |
C5—C6 | 1.473 (3) | C25—H25A | 0.9600 |
C6—C7 | 1.387 (3) | C25—H25B | 0.9600 |
C7—C8 | 1.373 (3) | C25—H25C | 0.9600 |
C7—H7 | 0.9300 | C26—H26A | 0.9600 |
C8—C9 | 1.474 (3) | C26—H26B | 0.9600 |
C9—C10 | 1.380 (3) | C26—H26C | 0.9600 |
C9—C14 | 1.381 (3) | C27—C28 | 1.501 (4) |
C10—C11 | 1.378 (3) | C27—C29 | 1.506 (3) |
C10—H10 | 0.9300 | C27—H27 | 0.9800 |
C11—C12 | 1.369 (4) | C28—H28A | 0.9600 |
C11—H11 | 0.9300 | C28—H28B | 0.9600 |
C12—C13 | 1.351 (4) | C28—H28C | 0.9600 |
C12—H12 | 0.9300 | C29—H29A | 0.9600 |
C13—C14 | 1.374 (3) | C29—H29B | 0.9600 |
C13—H13 | 0.9300 | C29—H29C | 0.9600 |
C14—H14 | 0.9300 | ||
C1—N1—C5 | 117.55 (18) | N5—C17—C16 | 105.95 (18) |
C6—N2—N3 | 104.67 (17) | N5—C17—C18 | 122.37 (18) |
N2—N3—C8 | 112.07 (16) | C16—C17—C18 | 131.7 (2) |
N2—N3—C24 | 117.84 (17) | C19—C18—C23 | 118.0 (2) |
C8—N3—C24 | 129.40 (18) | C19—C18—C17 | 120.6 (2) |
C15—N4—N5 | 104.86 (17) | C23—C18—C17 | 121.5 (2) |
N4—N5—C17 | 112.34 (16) | C18—C19—C20 | 120.6 (2) |
N4—N5—C27 | 119.23 (17) | C18—C19—H19 | 119.7 |
C17—N5—C27 | 127.95 (18) | C20—C19—H19 | 119.7 |
N1—C1—C2 | 122.68 (18) | C21—C20—C19 | 120.4 (3) |
N1—C1—C15 | 116.11 (18) | C21—C20—H20 | 119.8 |
C2—C1—C15 | 121.20 (18) | C19—C20—H20 | 119.8 |
C3—C2—C1 | 118.8 (2) | C20—C21—C22 | 120.0 (2) |
C3—C2—H2 | 120.6 | C20—C21—H21 | 120.0 |
C1—C2—H2 | 120.6 | C22—C21—H21 | 120.0 |
C2—C3—C4 | 119.5 (2) | C21—C22—C23 | 119.9 (2) |
C2—C3—H3 | 120.3 | C21—C22—H22 | 120.1 |
C4—C3—H3 | 120.3 | C23—C22—H22 | 120.1 |
C3—C4—C5 | 118.91 (19) | C22—C23—C18 | 121.2 (3) |
C3—C4—H4 | 120.5 | C22—C23—H23 | 119.4 |
C5—C4—H4 | 120.5 | C18—C23—H23 | 119.4 |
N1—C5—C4 | 122.63 (18) | N3—C24—C25 | 110.52 (18) |
N1—C5—C6 | 114.89 (18) | N3—C24—C26 | 110.4 (2) |
C4—C5—C6 | 122.47 (18) | C25—C24—C26 | 113.2 (2) |
N2—C6—C7 | 111.30 (18) | N3—C24—H24 | 107.5 |
N2—C6—C5 | 120.23 (19) | C25—C24—H24 | 107.5 |
C7—C6—C5 | 128.46 (19) | C26—C24—H24 | 107.5 |
C8—C7—C6 | 106.11 (18) | C24—C25—H25A | 109.5 |
C8—C7—H7 | 126.9 | C24—C25—H25B | 109.5 |
C6—C7—H7 | 126.9 | H25A—C25—H25B | 109.5 |
N3—C8—C7 | 105.83 (18) | C24—C25—H25C | 109.5 |
N3—C8—C9 | 123.87 (18) | H25A—C25—H25C | 109.5 |
C7—C8—C9 | 130.3 (2) | H25B—C25—H25C | 109.5 |
C10—C9—C14 | 117.7 (2) | C24—C26—H26A | 109.5 |
C10—C9—C8 | 119.4 (2) | C24—C26—H26B | 109.5 |
C14—C9—C8 | 122.9 (2) | H26A—C26—H26B | 109.5 |
C11—C10—C9 | 120.6 (3) | C24—C26—H26C | 109.5 |
C11—C10—H10 | 119.7 | H26A—C26—H26C | 109.5 |
C9—C10—H10 | 119.7 | H26B—C26—H26C | 109.5 |
C12—C11—C10 | 120.1 (3) | N5—C27—C28 | 110.2 (2) |
C12—C11—H11 | 120.0 | N5—C27—C29 | 109.6 (2) |
C10—C11—H11 | 120.0 | C28—C27—C29 | 112.5 (2) |
C13—C12—C11 | 120.3 (3) | N5—C27—H27 | 108.2 |
C13—C12—H12 | 119.8 | C28—C27—H27 | 108.2 |
C11—C12—H12 | 119.8 | C29—C27—H27 | 108.2 |
C12—C13—C14 | 119.7 (3) | C27—C28—H28A | 109.5 |
C12—C13—H13 | 120.1 | C27—C28—H28B | 109.5 |
C14—C13—H13 | 120.1 | H28A—C28—H28B | 109.5 |
C13—C14—C9 | 121.5 (2) | C27—C28—H28C | 109.5 |
C13—C14—H14 | 119.2 | H28A—C28—H28C | 109.5 |
C9—C14—H14 | 119.2 | H28B—C28—H28C | 109.5 |
N4—C15—C16 | 110.78 (18) | C27—C29—H29A | 109.5 |
N4—C15—C1 | 120.71 (19) | C27—C29—H29B | 109.5 |
C16—C15—C1 | 128.51 (19) | H29A—C29—H29B | 109.5 |
C17—C16—C15 | 106.06 (18) | C27—C29—H29C | 109.5 |
C17—C16—H16 | 127.0 | H29A—C29—H29C | 109.5 |
C15—C16—H16 | 127.0 | H29B—C29—H29C | 109.5 |
C6—N2—N3—C8 | −0.6 (2) | C12—C13—C14—C9 | 1.5 (4) |
C6—N2—N3—C24 | −171.95 (18) | C10—C9—C14—C13 | −2.3 (4) |
C15—N4—N5—C17 | 1.2 (2) | C8—C9—C14—C13 | −179.6 (2) |
C15—N4—N5—C27 | 173.9 (2) | N5—N4—C15—C16 | −0.8 (2) |
C5—N1—C1—C2 | 0.3 (3) | N5—N4—C15—C1 | 179.42 (19) |
C5—N1—C1—C15 | −178.48 (18) | N1—C1—C15—N4 | −176.9 (2) |
N1—C1—C2—C3 | 0.0 (3) | C2—C1—C15—N4 | 4.3 (3) |
C15—C1—C2—C3 | 178.8 (2) | N1—C1—C15—C16 | 3.4 (3) |
C1—C2—C3—C4 | 0.3 (3) | C2—C1—C15—C16 | −175.4 (2) |
C2—C3—C4—C5 | −1.1 (3) | N4—C15—C16—C17 | 0.2 (3) |
C1—N1—C5—C4 | −1.1 (3) | C1—C15—C16—C17 | 179.9 (2) |
C1—N1—C5—C6 | 179.08 (18) | N4—N5—C17—C16 | −1.1 (3) |
C3—C4—C5—N1 | 1.5 (3) | C27—N5—C17—C16 | −173.0 (2) |
C3—C4—C5—C6 | −178.7 (2) | N4—N5—C17—C18 | 179.9 (2) |
N3—N2—C6—C7 | 0.9 (2) | C27—N5—C17—C18 | 8.0 (4) |
N3—N2—C6—C5 | 179.74 (19) | C15—C16—C17—N5 | 0.5 (2) |
N1—C5—C6—N2 | −164.57 (19) | C15—C16—C17—C18 | 179.4 (2) |
C4—C5—C6—N2 | 15.6 (3) | N5—C17—C18—C19 | −107.9 (3) |
N1—C5—C6—C7 | 14.0 (3) | C16—C17—C18—C19 | 73.4 (3) |
C4—C5—C6—C7 | −165.8 (2) | N5—C17—C18—C23 | 73.3 (3) |
N2—C6—C7—C8 | −0.9 (3) | C16—C17—C18—C23 | −105.4 (3) |
C5—C6—C7—C8 | −179.6 (2) | C23—C18—C19—C20 | −1.4 (4) |
N2—N3—C8—C7 | 0.0 (2) | C17—C18—C19—C20 | 179.8 (2) |
C24—N3—C8—C7 | 170.1 (2) | C18—C19—C20—C21 | 0.8 (4) |
N2—N3—C8—C9 | 178.7 (2) | C19—C20—C21—C22 | −0.1 (4) |
C24—N3—C8—C9 | −11.2 (4) | C20—C21—C22—C23 | 0.1 (4) |
C6—C7—C8—N3 | 0.5 (2) | C21—C22—C23—C18 | −0.7 (4) |
C6—C7—C8—C9 | −178.1 (2) | C19—C18—C23—C22 | 1.4 (3) |
N3—C8—C9—C10 | 135.3 (2) | C17—C18—C23—C22 | −179.8 (2) |
C7—C8—C9—C10 | −46.4 (4) | N2—N3—C24—C25 | 57.3 (3) |
N3—C8—C9—C14 | −47.5 (3) | C8—N3—C24—C25 | −112.3 (3) |
C7—C8—C9—C14 | 130.9 (3) | N2—N3—C24—C26 | −68.7 (3) |
C14—C9—C10—C11 | 1.4 (4) | C8—N3—C24—C26 | 121.7 (2) |
C8—C9—C10—C11 | 178.8 (2) | N4—N5—C27—C28 | 52.8 (3) |
C9—C10—C11—C12 | 0.3 (5) | C17—N5—C27—C28 | −135.8 (3) |
C10—C11—C12—C13 | −1.2 (5) | N4—N5—C27—C29 | −71.5 (3) |
C11—C12—C13—C14 | 0.3 (5) | C17—N5—C27—C29 | 99.9 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C20—H20···Cg1i | 0.93 | 2.86 | 3.710 (3) | 153 |
Symmetry code: (i) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C29H29N5 |
Mr | 447.57 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 298 |
a, b, c (Å) | 9.973 (3), 10.172 (3), 14.014 (4) |
α, β, γ (°) | 110.940 (4), 106.494 (4), 94.583 (4) |
V (Å3) | 1246.8 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.07 |
Crystal size (mm) | 0.53 × 0.43 × 0.39 |
Data collection | |
Diffractometer | SMART 1K CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2002) |
Tmin, Tmax | 0.963, 0.972 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6572, 4332, 2417 |
Rint | 0.023 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.123, 1.05 |
No. of reflections | 4332 |
No. of parameters | 307 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.14, −0.18 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXTL (Sheldrick, 2001) and publCIF (Westrip, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C20—H20···Cg1i | 0.93 | 2.86 | 3.710 (3) | 153 |
Symmetry code: (i) −x+1, −y, −z. |
References
Bruker (2001). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Dias, H. V. R. & Gamage, C. S. P. (2007). Angew. Chem. Int. Ed. 46, 2192–2194. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (2001). SHELXTL. Version 6.10. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Sheldrick, G. M. (2002). SADABS. Version 2.03. University of Göttingen, Germany. Google Scholar
Westrip, S. P. (2008). publCIF. In preparation. Google Scholar
Zhou, Y. B. & Chen, W. Z. (2007). Dalton Trans. pp. 5123–5125. Web of Science CSD CrossRef Google Scholar
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.
Pyrazolyl ligands are a kind of mutifuntional organic ligands often displaying exo-bidentate coordination mode (Dias & Gamage, 2007). The title compound, 2,6-bis(5-phenyl-1-isopropyl-1H-pyrazol-3-yl)pyridine (hereinafter abbreviated to bpipp), is a potentially tridentate pincer ligand by N-alkylation of a bispyrazolyl ligand.
The asymmetric unit of the title compound contains only one bpipp molecule (Fig. 1). The pyrazole and pyridine rings are near-coplanar [inter-ring dihedral angles 3.94 (12) and 14.84 (12)°], whereas the pyrazole rings are twisted from the phenyl rings with the two dihedral angles 46.72 (8) and 73.39 (8)°. The phenyl ring interacts with the pyrazole ring of the neighbouring molecule to afford a weak intermolecular C—H··· π interaction (Table 1; Cg1 is the centroid of the C6—C8/N2/N3 pyrazole ring) which stabilizes the molecular packing. The centroid to centroid distance between stacked pyridine rings is ca 4.88 Å, which is very long and prevents π-π stacking (Fig. 2). All bond lengths and angles are normal.