organic compounds
(1Z,1′Z,3E,3′E)-1,1′-Diphenyl-3,3′-[(1S,2S)-cyclohexane-1,2-diyldinitrilo]dibut-1-en-1-ol
aOrdered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China
*Correspondence e-mail: quzr@seu.edu.cn
A new tetradentate chiral Schiff base ligand, C26H30N2O2, has been synthesized by the reaction of 1-phenylbutane-1,3-dione with (1S,2S)-(−)-1,2-diaminocyclohexane. The chiral centers in the molecule have the same S configuration, since the was determined by that of the starting reagent (1S,2S)-(−)-1,2-diaminohexane. The cyclohexane ring is in a chair conformation, and the substituents are equatorial in the most stable conformation (trans-cyclohexyl). The is stabilized by two intramolecular O—H⋯N hydrogen bonds and a weak C—H⋯π interaction.
Related literature
For the chemistry of ); Bandini et al. (1999, 2000); Belokon et al. (1997); Cozzi (2003); Jiang et al. (1995); Kureshy et al. (2001); Sasaki et al. (1991).
see: Alemi & Shaabani (2000Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808014670/bx2143sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808014670/bx2143Isup2.hkl
1-phenylbutane-1,3-dione (3.89 g, 0.024 mol) in 6 ml of chloroform was added dropwise to a solution of chloroform (20 ml) containing (1S, 2S)-(–)-1,2-diaminocyclohexane (1.14 g, 0.01 mol), which was kept at 0–5°C with vigorous stirring during the reaction. After complete addition which took approximately 30 min, the mixture was stirred for another 1 h at room temperature. After the evaporation of the solvent under reduced pressure, the crude product was recrystallized by slowly evaporating with petroleum ether to yield colorless crystals.
Positional parameters of all the H atoms were calculated geometrically and were allowed to ride on the C, O atoms to which they are bonded, with C—H = 0.93 to 0.98Å, O—H = 0.82 Å , with Uiso (H) = 1.2Ueq (Caromatic, Cmethylene), Uiso(H) = 1.5Ueq (Cmethyl) or 1.5 Ueq(O). In the absence of significant
effects, 2006 Friedel pairs were merged.Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. A view of the compound with the atomic numbering scheme. Displacement ellipsoids were drawn at the 30% probability level. |
C26H30N2O2 | F(000) = 864 |
Mr = 402.52 | Dx = 1.120 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 4136 reflections |
a = 8.9073 (11) Å | θ = 3.1–27.5° |
b = 10.1205 (13) Å | µ = 0.07 mm−1 |
c = 26.476 (3) Å | T = 293 K |
V = 2386.7 (5) Å3 | Block, colorless |
Z = 4 | 0.20 × 0.20 × 0.20 mm |
Rigaku SCXmini diffractometer | 2683 independent reflections |
Radiation source: fine-focus sealed tube | 1952 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.062 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 26.0°, θmin = 2.4° |
ω scans | h = −10→10 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −12→12 |
Tmin = 0.980, Tmax = 0.990 | l = −32→32 |
22130 measured reflections |
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)] = 0.061 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.159 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0753P)2 + 0.2595P] where P = (Fo2 + 2Fc2)/3 |
2683 reflections | (Δ/σ)max < 0.001 |
275 parameters | Δρmax = 0.29 e Å−3 |
0 restraints | Δρmin = −0.17 e Å−3 |
C26H30N2O2 | V = 2386.7 (5) Å3 |
Mr = 402.52 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 8.9073 (11) Å | µ = 0.07 mm−1 |
b = 10.1205 (13) Å | T = 293 K |
c = 26.476 (3) Å | 0.20 × 0.20 × 0.20 mm |
Rigaku SCXmini diffractometer | 2683 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 1952 reflections with I > 2σ(I) |
Tmin = 0.980, Tmax = 0.990 | Rint = 0.062 |
22130 measured reflections |
R[F2 > 2σ(F2)] = 0.061 | 0 restraints |
wR(F2) = 0.159 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.29 e Å−3 |
2683 reflections | Δρmin = −0.17 e Å−3 |
275 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 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 | ||
N2 | 0.8242 (3) | 0.2435 (3) | 0.96116 (10) | 0.0576 (7) | |
C17 | 0.8209 (4) | 0.1345 (3) | 0.92486 (12) | 0.0562 (8) | |
H17 | 0.9072 | 0.1434 | 0.9021 | 0.067* | |
N1 | 0.6697 (4) | 0.2620 (3) | 0.86429 (10) | 0.0618 (8) | |
O2 | 0.7103 (3) | 0.3353 (2) | 1.04671 (9) | 0.0684 (7) | |
H2A | 0.7189 | 0.2838 | 1.0230 | 0.103* | |
C1' | 0.7786 (4) | 0.4406 (3) | 1.03675 (13) | 0.0582 (8) | |
C18 | 0.8342 (5) | 0.0039 (3) | 0.95283 (14) | 0.0669 (10) | |
H18A | 0.9290 | 0.0014 | 0.9708 | 0.080* | |
H18B | 0.7541 | −0.0025 | 0.9776 | 0.080* | |
C2 | 0.6168 (4) | 0.4861 (4) | 0.84749 (13) | 0.0597 (9) | |
H2 | 0.5630 | 0.5613 | 0.8564 | 0.072* | |
C3' | 0.8907 (4) | 0.3615 (4) | 0.95676 (13) | 0.0571 (8) | |
C3 | 0.5973 (4) | 0.3737 (4) | 0.87611 (13) | 0.0597 (9) | |
C21 | 0.6703 (6) | 0.0219 (4) | 0.85724 (15) | 0.0776 (12) | |
H21A | 0.5761 | 0.0238 | 0.8389 | 0.093* | |
H21B | 0.7512 | 0.0291 | 0.8329 | 0.093* | |
O1 | 0.7936 (4) | 0.3983 (3) | 0.79076 (10) | 0.0852 (9) | |
H1 | 0.7875 | 0.3376 | 0.8112 | 0.128* | |
C16 | 0.6767 (4) | 0.1386 (3) | 0.89317 (13) | 0.0584 (9) | |
H16 | 0.5899 | 0.1345 | 0.9159 | 0.070* | |
C4 | 0.7242 (4) | 0.6191 (4) | 0.77629 (13) | 0.0653 (10) | |
C2' | 0.8698 (4) | 0.4569 (4) | 0.99355 (13) | 0.0618 (9) | |
H2' | 0.9192 | 0.5372 | 0.9896 | 0.074* | |
C10 | 0.7610 (4) | 0.5522 (4) | 1.07347 (14) | 0.0648 (9) | |
C23 | 0.9890 (5) | 0.3907 (4) | 0.91182 (14) | 0.0684 (10) | |
H23A | 0.9330 | 0.3765 | 0.8813 | 0.103* | |
H23B | 1.0747 | 0.3332 | 0.9123 | 0.103* | |
H23C | 1.0219 | 0.4809 | 0.9132 | 0.103* | |
C1 | 0.7137 (4) | 0.4938 (4) | 0.80549 (13) | 0.0629 (9) | |
C22 | 0.4918 (5) | 0.3766 (4) | 0.92075 (15) | 0.0778 (12) | |
H22A | 0.5438 | 0.3469 | 0.9504 | 0.117* | |
H22B | 0.4079 | 0.3194 | 0.9143 | 0.117* | |
H22C | 0.4565 | 0.4652 | 0.9259 | 0.117* | |
C19 | 0.8253 (5) | −0.1133 (4) | 0.91717 (15) | 0.0772 (11) | |
H19A | 0.9126 | −0.1136 | 0.8953 | 0.093* | |
H19B | 0.8262 | −0.1946 | 0.9366 | 0.093* | |
C20 | 0.6840 (6) | −0.1081 (4) | 0.88527 (18) | 0.0847 (12) | |
H20A | 0.6855 | −0.1801 | 0.8611 | 0.102* | |
H20B | 0.5971 | −0.1197 | 0.9069 | 0.102* | |
C15 | 0.7371 (5) | 0.5242 (4) | 1.12405 (15) | 0.0771 (11) | |
H15 | 0.7328 | 0.4368 | 1.1348 | 0.093* | |
C9 | 0.6005 (5) | 0.6985 (4) | 0.76822 (16) | 0.0787 (12) | |
H9 | 0.5080 | 0.6744 | 0.7817 | 0.094* | |
C11 | 0.7644 (5) | 0.6836 (4) | 1.05852 (18) | 0.0824 (13) | |
H11 | 0.7793 | 0.7047 | 1.0247 | 0.099* | |
C12 | 0.7458 (6) | 0.7824 (5) | 1.0933 (2) | 0.1040 (17) | |
H12 | 0.7483 | 0.8701 | 1.0828 | 0.125* | |
C8 | 0.6128 (7) | 0.8127 (5) | 0.74050 (19) | 0.1055 (17) | |
H8 | 0.5290 | 0.8658 | 0.7352 | 0.127* | |
C14 | 0.7197 (7) | 0.6255 (5) | 1.15854 (18) | 0.1006 (16) | |
H14 | 0.7049 | 0.6065 | 1.1925 | 0.121* | |
C5 | 0.8588 (5) | 0.6560 (6) | 0.75543 (18) | 0.1002 (16) | |
H5 | 0.9425 | 0.6022 | 0.7597 | 0.120* | |
C13 | 0.7242 (6) | 0.7548 (6) | 1.1424 (2) | 0.1062 (18) | |
H13 | 0.7123 | 0.8232 | 1.1655 | 0.127* | |
C6 | 0.8718 (8) | 0.7720 (7) | 0.7282 (3) | 0.133 (2) | |
H6 | 0.9640 | 0.7979 | 0.7150 | 0.160* | |
C7 | 0.7471 (11) | 0.8477 (6) | 0.7210 (2) | 0.126 (2) | |
H7 | 0.7546 | 0.9251 | 0.7023 | 0.152* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N2 | 0.0638 (17) | 0.0557 (16) | 0.0532 (15) | −0.0045 (15) | 0.0003 (14) | −0.0004 (14) |
C17 | 0.061 (2) | 0.0553 (19) | 0.0528 (17) | 0.0016 (18) | 0.0041 (16) | 0.0009 (16) |
N1 | 0.0690 (19) | 0.0633 (18) | 0.0531 (15) | 0.0081 (17) | −0.0017 (15) | 0.0041 (14) |
O2 | 0.0813 (18) | 0.0624 (15) | 0.0614 (14) | −0.0075 (15) | 0.0111 (14) | −0.0046 (12) |
C1' | 0.062 (2) | 0.0504 (18) | 0.0618 (19) | −0.0020 (18) | −0.0071 (18) | 0.0042 (17) |
C18 | 0.077 (3) | 0.059 (2) | 0.065 (2) | 0.003 (2) | −0.006 (2) | 0.0059 (18) |
C2 | 0.063 (2) | 0.061 (2) | 0.0551 (18) | 0.0043 (18) | 0.0048 (17) | 0.0030 (17) |
C3' | 0.0552 (19) | 0.0579 (19) | 0.0582 (19) | −0.0051 (17) | −0.0012 (17) | 0.0089 (17) |
C3 | 0.059 (2) | 0.070 (2) | 0.0505 (18) | 0.006 (2) | 0.0025 (16) | 0.0044 (18) |
C21 | 0.091 (3) | 0.073 (3) | 0.069 (2) | −0.002 (2) | −0.013 (2) | −0.011 (2) |
O1 | 0.091 (2) | 0.097 (2) | 0.0675 (16) | 0.0300 (19) | 0.0233 (16) | 0.0236 (15) |
C16 | 0.065 (2) | 0.0539 (19) | 0.0566 (18) | 0.0023 (19) | 0.0052 (18) | 0.0011 (16) |
C4 | 0.065 (2) | 0.077 (2) | 0.0537 (18) | −0.010 (2) | −0.0035 (18) | 0.0070 (19) |
C2' | 0.067 (2) | 0.0527 (19) | 0.066 (2) | −0.0099 (18) | 0.0021 (18) | 0.0005 (18) |
C10 | 0.061 (2) | 0.061 (2) | 0.072 (2) | 0.0020 (19) | −0.0050 (19) | −0.0072 (19) |
C23 | 0.067 (2) | 0.072 (2) | 0.066 (2) | −0.007 (2) | 0.0063 (19) | 0.008 (2) |
C1 | 0.058 (2) | 0.074 (2) | 0.0565 (18) | 0.009 (2) | 0.0001 (17) | 0.0050 (19) |
C22 | 0.080 (3) | 0.083 (3) | 0.070 (2) | 0.014 (2) | 0.026 (2) | 0.014 (2) |
C19 | 0.090 (3) | 0.056 (2) | 0.086 (3) | 0.006 (2) | 0.004 (2) | 0.001 (2) |
C20 | 0.100 (3) | 0.060 (2) | 0.094 (3) | −0.001 (2) | −0.003 (3) | −0.015 (2) |
C15 | 0.082 (3) | 0.083 (3) | 0.067 (2) | 0.004 (2) | −0.005 (2) | −0.008 (2) |
C9 | 0.078 (3) | 0.083 (3) | 0.076 (3) | 0.001 (2) | −0.012 (2) | 0.020 (2) |
C11 | 0.088 (3) | 0.064 (2) | 0.095 (3) | 0.000 (2) | 0.007 (3) | −0.001 (2) |
C12 | 0.106 (4) | 0.064 (3) | 0.142 (5) | 0.002 (3) | 0.016 (4) | −0.023 (3) |
C8 | 0.136 (5) | 0.090 (3) | 0.090 (3) | −0.001 (4) | −0.018 (3) | 0.031 (3) |
C14 | 0.110 (4) | 0.114 (4) | 0.078 (3) | 0.014 (4) | −0.010 (3) | −0.030 (3) |
C5 | 0.077 (3) | 0.124 (4) | 0.100 (3) | −0.017 (3) | 0.012 (3) | 0.031 (3) |
C13 | 0.096 (4) | 0.091 (4) | 0.131 (5) | 0.001 (3) | 0.001 (4) | −0.054 (4) |
C6 | 0.120 (5) | 0.149 (6) | 0.130 (5) | −0.056 (5) | 0.021 (4) | 0.039 (5) |
C7 | 0.180 (7) | 0.099 (4) | 0.100 (4) | −0.037 (5) | −0.006 (5) | 0.034 (3) |
N2—C3' | 1.338 (4) | C10—C15 | 1.385 (5) |
N2—C17 | 1.463 (4) | C10—C11 | 1.388 (5) |
C17—C18 | 1.520 (5) | C23—H23A | 0.9600 |
C17—C16 | 1.535 (5) | C23—H23B | 0.9600 |
C17—H17 | 0.9800 | C23—H23C | 0.9600 |
N1—C3 | 1.339 (5) | C22—H22A | 0.9600 |
N1—C16 | 1.465 (4) | C22—H22B | 0.9600 |
O2—C1' | 1.255 (4) | C22—H22C | 0.9600 |
O2—H2A | 0.8200 | C19—C20 | 1.517 (6) |
C1'—C2' | 1.413 (5) | C19—H19A | 0.9700 |
C1'—C10 | 1.498 (5) | C19—H19B | 0.9700 |
C18—C19 | 1.518 (5) | C20—H20A | 0.9700 |
C18—H18A | 0.9700 | C20—H20B | 0.9700 |
C18—H18B | 0.9700 | C15—C14 | 1.382 (6) |
C2—C3 | 1.378 (5) | C15—H15 | 0.9300 |
C2—C1 | 1.409 (5) | C9—C8 | 1.374 (6) |
C2—H2 | 0.9300 | C9—H9 | 0.9300 |
C3'—C2' | 1.384 (5) | C11—C12 | 1.370 (6) |
C3'—C23 | 1.506 (5) | C11—H11 | 0.9300 |
C3—C22 | 1.510 (5) | C12—C13 | 1.341 (7) |
C21—C20 | 1.515 (5) | C12—H12 | 0.9300 |
C21—C16 | 1.517 (5) | C8—C7 | 1.350 (8) |
C21—H21A | 0.9700 | C8—H8 | 0.9300 |
C21—H21B | 0.9700 | C14—C13 | 1.377 (7) |
O1—C1 | 1.262 (4) | C14—H14 | 0.9300 |
O1—H1 | 0.8200 | C5—C6 | 1.382 (8) |
C16—H16 | 0.9800 | C5—H5 | 0.9300 |
C4—C5 | 1.372 (6) | C13—H13 | 0.9300 |
C4—C9 | 1.380 (5) | C6—C7 | 1.363 (9) |
C4—C1 | 1.488 (5) | C6—H6 | 0.9300 |
C2'—H2' | 0.9300 | C7—H7 | 0.9300 |
C3'—N2—C17 | 128.6 (3) | H23A—C23—H23C | 109.5 |
N2—C17—C18 | 109.5 (3) | H23B—C23—H23C | 109.5 |
N2—C17—C16 | 110.8 (3) | O1—C1—C2 | 123.2 (3) |
C18—C17—C16 | 110.8 (3) | O1—C1—C4 | 117.2 (3) |
N2—C17—H17 | 108.6 | C2—C1—C4 | 119.7 (3) |
C18—C17—H17 | 108.6 | C3—C22—H22A | 109.5 |
C16—C17—H17 | 108.6 | C3—C22—H22B | 109.5 |
C3—N1—C16 | 128.2 (3) | H22A—C22—H22B | 109.5 |
C1'—O2—H2A | 109.5 | C3—C22—H22C | 109.5 |
O2—C1'—C2' | 123.2 (3) | H22A—C22—H22C | 109.5 |
O2—C1'—C10 | 116.9 (3) | H22B—C22—H22C | 109.5 |
C2'—C1'—C10 | 119.8 (3) | C20—C19—C18 | 111.2 (3) |
C19—C18—C17 | 111.9 (3) | C20—C19—H19A | 109.4 |
C19—C18—H18A | 109.2 | C18—C19—H19A | 109.4 |
C17—C18—H18A | 109.2 | C20—C19—H19B | 109.4 |
C19—C18—H18B | 109.2 | C18—C19—H19B | 109.4 |
C17—C18—H18B | 109.2 | H19A—C19—H19B | 108.0 |
H18A—C18—H18B | 107.9 | C21—C20—C19 | 111.7 (4) |
C3—C2—C1 | 123.8 (3) | C21—C20—H20A | 109.3 |
C3—C2—H2 | 118.1 | C19—C20—H20A | 109.3 |
C1—C2—H2 | 118.1 | C21—C20—H20B | 109.3 |
N2—C3'—C2' | 120.1 (3) | C19—C20—H20B | 109.3 |
N2—C3'—C23 | 120.1 (3) | H20A—C20—H20B | 107.9 |
C2'—C3'—C23 | 119.8 (3) | C14—C15—C10 | 120.3 (4) |
N1—C3—C2 | 120.5 (3) | C14—C15—H15 | 119.9 |
N1—C3—C22 | 119.9 (3) | C10—C15—H15 | 119.9 |
C2—C3—C22 | 119.6 (3) | C8—C9—C4 | 120.6 (5) |
C20—C21—C16 | 111.5 (3) | C8—C9—H9 | 119.7 |
C20—C21—H21A | 109.3 | C4—C9—H9 | 119.7 |
C16—C21—H21A | 109.3 | C12—C11—C10 | 120.3 (5) |
C20—C21—H21B | 109.3 | C12—C11—H11 | 119.8 |
C16—C21—H21B | 109.3 | C10—C11—H11 | 119.8 |
H21A—C21—H21B | 108.0 | C13—C12—C11 | 121.1 (5) |
C1—O1—H1 | 109.5 | C13—C12—H12 | 119.4 |
N1—C16—C21 | 109.5 (3) | C11—C12—H12 | 119.4 |
N1—C16—C17 | 110.1 (3) | C7—C8—C9 | 119.7 (6) |
C21—C16—C17 | 110.7 (3) | C7—C8—H8 | 120.2 |
N1—C16—H16 | 108.8 | C9—C8—H8 | 120.2 |
C21—C16—H16 | 108.8 | C13—C14—C15 | 119.8 (5) |
C17—C16—H16 | 108.8 | C13—C14—H14 | 120.1 |
C5—C4—C9 | 118.5 (4) | C15—C14—H14 | 120.1 |
C5—C4—C1 | 119.7 (4) | C4—C5—C6 | 120.9 (6) |
C9—C4—C1 | 121.8 (4) | C4—C5—H5 | 119.5 |
C3'—C2'—C1' | 124.5 (3) | C6—C5—H5 | 119.5 |
C3'—C2'—H2' | 117.8 | C12—C13—C14 | 120.2 (5) |
C1'—C2'—H2' | 117.8 | C12—C13—H13 | 119.9 |
C15—C10—C11 | 118.3 (4) | C14—C13—H13 | 119.9 |
C15—C10—C1' | 119.3 (3) | C7—C6—C5 | 118.8 (6) |
C11—C10—C1' | 122.3 (4) | C7—C6—H6 | 120.6 |
C3'—C23—H23A | 109.5 | C5—C6—H6 | 120.6 |
C3'—C23—H23B | 109.5 | C8—C7—C6 | 121.5 (5) |
H23A—C23—H23B | 109.5 | C8—C7—H7 | 119.3 |
C3'—C23—H23C | 109.5 | C6—C7—H7 | 119.3 |
C3'—N2—C17—C18 | 141.4 (4) | C3—C2—C1—O1 | −1.2 (6) |
C3'—N2—C17—C16 | −96.1 (4) | C3—C2—C1—C4 | 178.6 (3) |
N2—C17—C18—C19 | 177.8 (3) | C5—C4—C1—O1 | −34.7 (6) |
C16—C17—C18—C19 | 55.2 (4) | C9—C4—C1—O1 | 143.5 (4) |
C17—N2—C3'—C2' | 174.1 (3) | C5—C4—C1—C2 | 145.5 (4) |
C17—N2—C3'—C23 | −6.1 (5) | C9—C4—C1—C2 | −36.3 (5) |
C16—N1—C3—C2 | 172.3 (3) | C17—C18—C19—C20 | −54.6 (5) |
C16—N1—C3—C22 | −8.4 (6) | C16—C21—C20—C19 | −55.7 (5) |
C1—C2—C3—N1 | −1.4 (6) | C18—C19—C20—C21 | 54.4 (5) |
C1—C2—C3—C22 | 179.4 (4) | C11—C10—C15—C14 | −1.0 (7) |
C3—N1—C16—C21 | 141.4 (4) | C1'—C10—C15—C14 | −179.6 (4) |
C3—N1—C16—C17 | −96.7 (4) | C5—C4—C9—C8 | −0.9 (6) |
C20—C21—C16—N1 | 177.5 (4) | C1—C4—C9—C8 | −179.1 (4) |
C20—C21—C16—C17 | 56.0 (5) | C15—C10—C11—C12 | 0.6 (7) |
N2—C17—C16—N1 | 61.4 (3) | C1'—C10—C11—C12 | 179.1 (4) |
C18—C17—C16—N1 | −176.9 (3) | C10—C11—C12—C13 | 0.0 (9) |
N2—C17—C16—C21 | −177.4 (3) | C4—C9—C8—C7 | 0.0 (7) |
C18—C17—C16—C21 | −55.6 (4) | C10—C15—C14—C13 | 0.8 (8) |
N2—C3'—C2'—C1' | −1.1 (6) | C9—C4—C5—C6 | 1.9 (7) |
C23—C3'—C2'—C1' | 179.1 (3) | C1—C4—C5—C6 | −179.9 (5) |
O2—C1'—C2'—C3' | 2.2 (6) | C11—C12—C13—C14 | −0.3 (9) |
C10—C1'—C2'—C3' | −178.4 (3) | C15—C14—C13—C12 | −0.2 (9) |
O2—C1'—C10—C15 | 30.0 (5) | C4—C5—C6—C7 | −2.0 (9) |
C2'—C1'—C10—C15 | −149.4 (4) | C9—C8—C7—C6 | 0.0 (10) |
O2—C1'—C10—C11 | −148.5 (4) | C5—C6—C7—C8 | 1.0 (11) |
C2'—C1'—C10—C11 | 32.1 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···N2 | 0.82 | 1.93 | 2.650 (3) | 146 |
O1—H1···N1 | 0.82 | 1.91 | 2.629 (4) | 145 |
C19—H19A···Cg3i | 0.97 | 2.96 | 3.795 (5) | 144 |
Symmetry code: (i) x+1/2, −y+1/2, −z. |
Experimental details
Crystal data | |
Chemical formula | C26H30N2O2 |
Mr | 402.52 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 293 |
a, b, c (Å) | 8.9073 (11), 10.1205 (13), 26.476 (3) |
V (Å3) | 2386.7 (5) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.07 |
Crystal size (mm) | 0.20 × 0.20 × 0.20 |
Data collection | |
Diffractometer | Rigaku SCXmini diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.980, 0.990 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 22130, 2683, 1952 |
Rint | 0.062 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.061, 0.159, 1.07 |
No. of reflections | 2683 |
No. of parameters | 275 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.29, −0.17 |
Computer programs: CrystalClear (Rigaku, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···N2 | 0.82 | 1.93 | 2.650 (3) | 146 |
O1—H1···N1 | 0.82 | 1.91 | 2.629 (4) | 145 |
C19—H19A···Cg3i | 0.97 | 2.96 | 3.795 (5) | 144 |
Symmetry code: (i) x+1/2, −y+1/2, −z. |
Acknowledgements
This work was supported by a Start-up Grant from Southeast University to ZRQ.
References
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In recent years, research on Schiff bases has been intensified for the reason that some of them can form materials with non-linear optical (NLO) activity (Alemi & Shaabani, 2000), and some can be used for the asymmetric oxidation of methyl phenyl sulfides (Sasaki et al., 1991). The search for new chiral ligands for asymmetric synthesis is an important task in organic chemistry. Various chiral Schiff bases are widely used in asymmetric reactions (Jiang et al., 1995; Belokon et al., 1997; Bandini et al., 1999, 2000; Kureshy et al., 2001; Cozzi, 2003). Herein, we report the synthesis and crystal structure of a new chiral Schiff base ligand (1Z,1'Z,3E,3'E)-3,3'-((1S,2S)-cyclohexane-1,2-diylbis(azan-1-yl-1-ylidene))bis(1-phenylbut-1-en-1-ol). Fig. 1 show, the absolute configurations of the chiral centers and they have the same chirality (S-configuration). The cyclohexane ring is of chair conformation, and the substituents are equatorial in the most stable conformation of trans-cyclohexyl. The crystal structure is stabilized by two intramolecular O—H···N hydrogen bonds and a weak C—H···π interaction (Table 1).