In the title compound, C
20H
22N
20
4, the two phenyl rings form a dihedral angle of 89.2 (2)°. The crystal structure is stabilized by weak N—H
O and O—H
O hydrogen bonds.
Supporting information
CCDC reference: 633652
Key indicators
- Single-crystal X-ray study
- T = 294 K
- Mean (C-C) = 0.005 Å
- R factor = 0.035
- wR factor = 0.088
- Data-to-parameter ratio = 8.3
checkCIF/PLATON results
No syntax errors found
Alert level B
PLAT230_ALERT_2_B Hirshfeld Test Diff for C16 - C17 .. 7.05 su
PLAT331_ALERT_2_B Small Average Phenyl C-C Dist. C13 -C18 1.36 Ang.
Alert level C
PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical . ?
PLAT230_ALERT_2_C Hirshfeld Test Diff for C2 - C3 .. 6.06 su
PLAT331_ALERT_2_C Small Average Phenyl C-C Dist. C1 -C6 1.36 Ang.
PLAT340_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ... 5
Alert level G
REFLT03_ALERT_4_G Please check that the estimate of the number of Friedel pairs is
correct. If it is not, please give the correct count in the
_publ_section_exptl_refinement section of the submitted CIF.
From the CIF: _diffrn_reflns_theta_max 26.35
From the CIF: _reflns_number_total 1978
Count of symmetry unique reflns 1986
Completeness (_total/calc) 99.60%
TEST3: Check Friedels for noncentro structure
Estimate of Friedel pairs measured 0
Fraction of Friedel pairs measured 0.000
Are heavy atom types Z>Si present no
PLAT791_ALERT_1_G Confirm the Absolute Configuration of C8 = . S
PLAT791_ALERT_1_G Confirm the Absolute Configuration of C11 = . S
0 ALERT level A = In general: serious problem
2 ALERT level B = Potentially serious problem
4 ALERT level C = Check and explain
3 ALERT level G = General alerts; check
3 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
4 ALERT type 2 Indicator that the structure model may be wrong or deficient
1 ALERT type 3 Indicator that the structure quality may be low
1 ALERT type 4 Improvement, methodology, query or suggestion
0 ALERT type 5 Informative message, check
Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1997); software used to prepare material for publication: SHELXTL.
(DL)-2-[(DL)-2-Acetamido-3-phenylpropanamido]-3-phenylpropanoic acid
top
Crystal data top
C20H22N2O4 | F(000) = 376 |
Mr = 354.40 | Dx = 1.292 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 2129 reflections |
a = 10.185 (3) Å | θ = 2.7–24.4° |
b = 8.633 (2) Å | µ = 0.09 mm−1 |
c = 10.427 (3) Å | T = 294 K |
β = 96.364 (5)° | Block, colourless |
V = 911.1 (4) Å3 | 0.34 × 0.30 × 0.24 mm |
Z = 2 | |
Data collection top
Bruker SMART CCD area-detector diffractometer | 1978 independent reflections |
Radiation source: fine-focus sealed tube | 1573 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
φ and ω scans | θmax = 26.4°, θmin = 2.0° |
Absorption correction: multi-scan (SADABS; Bruker, 1997) | h = −12→11 |
Tmin = 0.970, Tmax = 0.979 | k = −9→10 |
5164 measured reflections | l = −13→10 |
Refinement top
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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.088 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0407P)2 + 0.0961P] where P = (Fo2 + 2Fc2)/3 |
1978 reflections | (Δ/σ)max = 0.002 |
237 parameters | Δρmax = 0.12 e Å−3 |
1 restraint | Δρmin = −0.14 e Å−3 |
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. |
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
O1 | 0.69996 (18) | 0.4395 (3) | 0.48036 (15) | 0.0562 (5) | |
O2 | 0.53139 (18) | 0.3649 (3) | 0.57981 (16) | 0.0559 (5) | |
H2A | 0.5057 | 0.3268 | 0.5094 | 0.084* | |
O3 | 0.57688 (18) | 0.7336 (2) | 0.62996 (16) | 0.0525 (5) | |
O4 | 0.4503 (2) | 0.9361 (2) | 0.98687 (16) | 0.0650 (6) | |
N1 | 0.6224 (2) | 0.5530 (2) | 0.77869 (17) | 0.0433 (5) | |
H1 | 0.6135 | 0.5233 | 0.8560 | 0.052* | |
N2 | 0.4033 (2) | 0.8729 (2) | 0.78138 (18) | 0.0448 (5) | |
H2 | 0.3774 | 0.9056 | 0.7048 | 0.054* | |
C1 | 0.9695 (3) | 0.2567 (4) | 0.6947 (3) | 0.0646 (9) | |
H1A | 1.0103 | 0.3429 | 0.7351 | 0.077* | |
C2 | 1.0398 (3) | 0.1607 (5) | 0.6216 (3) | 0.0769 (11) | |
H2B | 1.1276 | 0.1830 | 0.6127 | 0.092* | |
C3 | 0.9825 (4) | 0.0349 (5) | 0.5631 (3) | 0.0793 (11) | |
H3 | 1.0300 | −0.0285 | 0.5129 | 0.095* | |
C4 | 0.8559 (4) | 0.0017 (4) | 0.5779 (3) | 0.0800 (10) | |
H4 | 0.8163 | −0.0861 | 0.5391 | 0.096* | |
C5 | 0.7857 (3) | 0.0963 (4) | 0.6495 (3) | 0.0644 (8) | |
H5 | 0.6983 | 0.0721 | 0.6588 | 0.077* | |
C6 | 0.8408 (3) | 0.2257 (4) | 0.7079 (2) | 0.0505 (7) | |
C7 | 0.7611 (3) | 0.3296 (3) | 0.7824 (2) | 0.0530 (7) | |
H7A | 0.8143 | 0.3619 | 0.8607 | 0.064* | |
H7B | 0.6858 | 0.2727 | 0.8071 | 0.064* | |
C8 | 0.7124 (2) | 0.4724 (3) | 0.7061 (2) | 0.0426 (6) | |
H8 | 0.7878 | 0.5398 | 0.6956 | 0.051* | |
C9 | 0.6478 (2) | 0.4265 (3) | 0.5755 (2) | 0.0421 (6) | |
C10 | 0.5532 (3) | 0.6716 (3) | 0.7296 (2) | 0.0421 (6) | |
C11 | 0.4359 (3) | 0.7133 (3) | 0.7976 (2) | 0.0428 (6) | |
H11 | 0.4563 | 0.6914 | 0.8899 | 0.051* | |
C12 | 0.3218 (3) | 0.6105 (3) | 0.7428 (3) | 0.0548 (7) | |
H12A | 0.2982 | 0.6368 | 0.6527 | 0.066* | |
H12B | 0.3507 | 0.5034 | 0.7466 | 0.066* | |
C13 | 0.2029 (3) | 0.6255 (3) | 0.8121 (2) | 0.0495 (6) | |
C14 | 0.0979 (3) | 0.7094 (4) | 0.7607 (3) | 0.0638 (8) | |
H14 | 0.1009 | 0.7576 | 0.6813 | 0.077* | |
C15 | −0.0117 (4) | 0.7246 (5) | 0.8228 (4) | 0.0822 (10) | |
H15 | −0.0825 | 0.7833 | 0.7858 | 0.099* | |
C16 | −0.0182 (4) | 0.6563 (5) | 0.9359 (4) | 0.0860 (12) | |
H16 | −0.0932 | 0.6679 | 0.9783 | 0.103* | |
C17 | 0.0846 (4) | 0.5694 (5) | 0.9896 (3) | 0.0820 (12) | |
H17 | 0.0794 | 0.5205 | 1.0684 | 0.098* | |
C18 | 0.1966 (3) | 0.5535 (4) | 0.9279 (3) | 0.0665 (8) | |
H18 | 0.2672 | 0.4943 | 0.9648 | 0.080* | |
C19 | 0.4107 (2) | 0.9727 (3) | 0.8764 (2) | 0.0444 (6) | |
C20 | 0.3687 (4) | 1.1323 (4) | 0.8419 (3) | 0.0671 (9) | |
H20A | 0.2793 | 1.1474 | 0.8602 | 0.101* | |
H20B | 0.3741 | 1.1491 | 0.7516 | 0.101* | |
H20C | 0.4254 | 1.2044 | 0.8914 | 0.101* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.0661 (11) | 0.0734 (13) | 0.0291 (8) | −0.0080 (11) | 0.0059 (8) | −0.0022 (9) |
O2 | 0.0598 (12) | 0.0696 (14) | 0.0380 (9) | −0.0108 (11) | 0.0048 (9) | −0.0142 (10) |
O3 | 0.0645 (11) | 0.0531 (11) | 0.0401 (10) | 0.0091 (10) | 0.0062 (8) | 0.0144 (9) |
O4 | 0.1090 (17) | 0.0522 (12) | 0.0307 (9) | 0.0077 (12) | −0.0063 (10) | −0.0095 (9) |
N1 | 0.0651 (14) | 0.0386 (12) | 0.0250 (9) | 0.0081 (11) | 0.0000 (9) | 0.0004 (9) |
N2 | 0.0688 (14) | 0.0386 (12) | 0.0256 (9) | 0.0055 (11) | −0.0014 (9) | −0.0016 (9) |
C1 | 0.068 (2) | 0.062 (2) | 0.0609 (18) | 0.0066 (16) | −0.0032 (16) | 0.0105 (15) |
C2 | 0.066 (2) | 0.093 (3) | 0.073 (2) | 0.025 (2) | 0.0176 (17) | 0.026 (2) |
C3 | 0.103 (3) | 0.073 (3) | 0.062 (2) | 0.034 (2) | 0.012 (2) | 0.0021 (19) |
C4 | 0.106 (3) | 0.061 (2) | 0.071 (2) | 0.020 (2) | −0.003 (2) | −0.0123 (17) |
C5 | 0.0706 (19) | 0.056 (2) | 0.0651 (19) | 0.0101 (16) | 0.0012 (15) | −0.0040 (16) |
C6 | 0.0607 (17) | 0.0512 (16) | 0.0380 (13) | 0.0111 (14) | −0.0016 (12) | 0.0070 (13) |
C7 | 0.0704 (18) | 0.0495 (17) | 0.0381 (13) | 0.0108 (14) | 0.0019 (13) | 0.0042 (12) |
C8 | 0.0546 (14) | 0.0403 (15) | 0.0318 (12) | 0.0024 (12) | −0.0003 (11) | −0.0002 (11) |
C9 | 0.0513 (15) | 0.0405 (14) | 0.0338 (12) | 0.0029 (12) | 0.0017 (11) | 0.0012 (11) |
C10 | 0.0595 (15) | 0.0394 (14) | 0.0258 (11) | 0.0000 (11) | −0.0030 (10) | −0.0014 (10) |
C11 | 0.0643 (16) | 0.0355 (13) | 0.0278 (11) | 0.0029 (12) | 0.0009 (11) | −0.0014 (11) |
C12 | 0.0674 (18) | 0.0465 (16) | 0.0499 (15) | −0.0025 (14) | 0.0045 (13) | −0.0122 (13) |
C13 | 0.0651 (17) | 0.0380 (14) | 0.0445 (14) | −0.0079 (13) | 0.0017 (12) | −0.0062 (12) |
C14 | 0.076 (2) | 0.0571 (19) | 0.0582 (17) | −0.0012 (17) | 0.0068 (16) | −0.0065 (16) |
C15 | 0.077 (2) | 0.080 (2) | 0.089 (3) | 0.007 (2) | 0.007 (2) | −0.016 (2) |
C16 | 0.080 (2) | 0.090 (3) | 0.092 (3) | −0.015 (2) | 0.028 (2) | −0.032 (3) |
C17 | 0.123 (3) | 0.073 (2) | 0.0540 (18) | −0.039 (3) | 0.027 (2) | −0.0105 (18) |
C18 | 0.091 (2) | 0.0542 (18) | 0.0532 (17) | −0.0117 (18) | 0.0034 (16) | 0.0015 (16) |
C19 | 0.0562 (15) | 0.0412 (15) | 0.0355 (14) | −0.0010 (12) | 0.0032 (11) | −0.0060 (11) |
C20 | 0.094 (2) | 0.0456 (17) | 0.0598 (18) | 0.0121 (17) | −0.0005 (17) | −0.0085 (15) |
Geometric parameters (Å, º) top
O1—C9 | 1.181 (3) | C7—H7B | 0.97 |
O2—C9 | 1.305 (3) | C8—C9 | 1.498 (3) |
O2—H2A | 0.82 | C8—H8 | 0.98 |
O3—C10 | 1.216 (3) | C10—C11 | 1.499 (4) |
O4—C19 | 1.220 (3) | C11—C12 | 1.523 (4) |
N1—C10 | 1.314 (3) | C11—H11 | 0.98 |
N1—C8 | 1.432 (3) | C12—C13 | 1.483 (4) |
N1—H1 | 0.86 | C12—H12A | 0.97 |
N2—C19 | 1.308 (3) | C12—H12B | 0.97 |
N2—C11 | 1.423 (3) | C13—C14 | 1.352 (4) |
N2—H2 | 0.86 | C13—C18 | 1.366 (4) |
C1—C6 | 1.360 (4) | C14—C15 | 1.357 (5) |
C1—C2 | 1.379 (5) | C14—H14 | 0.93 |
C1—H1A | 0.93 | C15—C16 | 1.327 (6) |
C2—C3 | 1.346 (6) | C15—H15 | 0.93 |
C2—H2B | 0.93 | C16—C17 | 1.357 (5) |
C3—C4 | 1.346 (5) | C16—H16 | 0.93 |
C3—H3 | 0.93 | C17—C18 | 1.377 (5) |
C4—C5 | 1.362 (5) | C17—H17 | 0.93 |
C4—H4 | 0.93 | C18—H18 | 0.93 |
C5—C6 | 1.363 (4) | C19—C20 | 1.475 (4) |
C5—H5 | 0.93 | C20—H20A | 0.96 |
C6—C7 | 1.485 (4) | C20—H20B | 0.96 |
C7—C8 | 1.520 (4) | C20—H20C | 0.96 |
C7—H7A | 0.97 | | |
| | | |
C9—O2—H2A | 109.5 | O3—C10—C11 | 122.8 (2) |
C10—N1—C8 | 121.3 (2) | N1—C10—C11 | 115.1 (2) |
C10—N1—H1 | 119.3 | N2—C11—C10 | 111.3 (2) |
C8—N1—H1 | 119.3 | N2—C11—C12 | 111.2 (2) |
C19—N2—C11 | 123.7 (2) | C10—C11—C12 | 107.3 (2) |
C19—N2—H2 | 118.2 | N2—C11—H11 | 109.0 |
C11—N2—H2 | 118.2 | C10—C11—H11 | 109.0 |
C6—C1—C2 | 120.2 (3) | C12—C11—H11 | 109.0 |
C6—C1—H1A | 119.9 | C13—C12—C11 | 113.4 (2) |
C2—C1—H1A | 119.9 | C13—C12—H12A | 108.9 |
C3—C2—C1 | 120.7 (3) | C11—C12—H12A | 108.9 |
C3—C2—H2B | 119.7 | C13—C12—H12B | 108.9 |
C1—C2—H2B | 119.7 | C11—C12—H12B | 108.9 |
C2—C3—C4 | 119.5 (3) | H12A—C12—H12B | 107.7 |
C2—C3—H3 | 120.3 | C14—C13—C18 | 118.8 (3) |
C4—C3—H3 | 120.3 | C14—C13—C12 | 120.4 (3) |
C3—C4—C5 | 120.2 (4) | C18—C13—C12 | 120.8 (3) |
C3—C4—H4 | 119.9 | C13—C14—C15 | 121.3 (3) |
C5—C4—H4 | 119.9 | C13—C14—H14 | 119.4 |
C4—C5—C6 | 121.4 (3) | C15—C14—H14 | 119.4 |
C4—C5—H5 | 119.3 | C16—C15—C14 | 120.4 (4) |
C6—C5—H5 | 119.3 | C16—C15—H15 | 119.8 |
C1—C6—C5 | 118.0 (3) | C14—C15—H15 | 119.8 |
C1—C6—C7 | 121.5 (3) | C15—C16—C17 | 120.0 (4) |
C5—C6—C7 | 120.5 (3) | C15—C16—H16 | 120.0 |
C6—C7—C8 | 112.5 (2) | C17—C16—H16 | 120.0 |
C6—C7—H7A | 109.1 | C16—C17—C18 | 120.2 (4) |
C8—C7—H7A | 109.1 | C16—C17—H17 | 119.9 |
C6—C7—H7B | 109.1 | C18—C17—H17 | 119.9 |
C8—C7—H7B | 109.1 | C13—C18—C17 | 119.4 (3) |
H7A—C7—H7B | 107.8 | C13—C18—H18 | 120.3 |
N1—C8—C9 | 111.5 (2) | C17—C18—H18 | 120.3 |
N1—C8—C7 | 108.02 (19) | O4—C19—N2 | 122.0 (2) |
C9—C8—C7 | 110.2 (2) | O4—C19—C20 | 121.9 (2) |
N1—C8—H8 | 109.0 | N2—C19—C20 | 116.1 (2) |
C9—C8—H8 | 109.0 | C19—C20—H20A | 109.5 |
C7—C8—H8 | 109.0 | C19—C20—H20B | 109.5 |
O1—C9—O2 | 124.2 (2) | H20A—C20—H20B | 109.5 |
O1—C9—C8 | 123.1 (2) | C19—C20—H20C | 109.5 |
O2—C9—C8 | 112.7 (2) | H20A—C20—H20C | 109.5 |
O3—C10—N1 | 121.8 (2) | H20B—C20—H20C | 109.5 |
| | | |
C6—C1—C2—C3 | −0.4 (5) | C19—N2—C11—C10 | −115.5 (3) |
C1—C2—C3—C4 | −1.0 (5) | C19—N2—C11—C12 | 125.0 (3) |
C2—C3—C4—C5 | 1.2 (5) | O3—C10—C11—N2 | −32.5 (3) |
C3—C4—C5—C6 | −0.1 (5) | N1—C10—C11—N2 | 153.4 (2) |
C2—C1—C6—C5 | 1.4 (4) | O3—C10—C11—C12 | 89.3 (3) |
C2—C1—C6—C7 | −177.9 (3) | N1—C10—C11—C12 | −84.8 (3) |
C4—C5—C6—C1 | −1.2 (4) | N2—C11—C12—C13 | −65.0 (3) |
C4—C5—C6—C7 | 178.2 (3) | C10—C11—C12—C13 | 173.1 (2) |
C1—C6—C7—C8 | 79.0 (3) | C11—C12—C13—C14 | 102.6 (3) |
C5—C6—C7—C8 | −100.3 (3) | C11—C12—C13—C18 | −78.2 (3) |
C10—N1—C8—C9 | −50.9 (3) | C18—C13—C14—C15 | 0.9 (5) |
C10—N1—C8—C7 | −172.1 (2) | C12—C13—C14—C15 | −179.9 (3) |
C6—C7—C8—N1 | 172.1 (2) | C13—C14—C15—C16 | −0.3 (6) |
C6—C7—C8—C9 | 50.0 (3) | C14—C15—C16—C17 | −0.6 (6) |
N1—C8—C9—O1 | 137.0 (3) | C15—C16—C17—C18 | 0.8 (6) |
C7—C8—C9—O1 | −103.0 (3) | C14—C13—C18—C17 | −0.6 (5) |
N1—C8—C9—O2 | −45.8 (3) | C12—C13—C18—C17 | −179.8 (3) |
C7—C8—C9—O2 | 74.2 (3) | C16—C17—C18—C13 | −0.2 (5) |
C8—N1—C10—O3 | −12.0 (4) | C11—N2—C19—O4 | 2.2 (4) |
C8—N1—C10—C11 | 162.2 (2) | C11—N2—C19—C20 | −178.0 (3) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2A···O3i | 0.82 | 1.79 | 2.598 (2) | 169 |
N1—H1···O4ii | 0.86 | 1.98 | 2.819 (3) | 166 |
N2—H2···O1iii | 0.86 | 2.02 | 2.872 (3) | 168 |
Symmetry codes: (i) −x+1, y−1/2, −z+1; (ii) −x+1, y−1/2, −z+2; (iii) −x+1, y+1/2, −z+1. |