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All results from a given calculation for CH3CH(NH2)COOH (Alanine)

using model chemistry: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-320.716939
Energy at 298.15K-320.726516
Nuclear repulsion energy247.144447
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCD/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3506 3409 1.30      
2 A 3408 3313 0.23      
3 A 3303 3212 211.27      
4 A 3142 3055 5.54      
5 A 3109 3023 23.72      
6 A 3059 2974 8.50      
7 A 3044 2960 10.97      
8 A 1845 1794 179.65      
9 A 1748 1699 31.21      
10 A 1580 1536 8.56      
11 A 1574 1531 5.95      
12 A 1477 1436 16.53      
13 A 1442 1402 380.57      
14 A 1422 1383 26.95      
15 A 1365 1327 16.40      
16 A 1268 1233 3.67      
17 A 1224 1190 22.71      
18 A 1170 1138 31.40      
19 A 1087 1057 36.57      
20 A 1053 1024 0.50      
21 A 984 957 97.30      
22 A 917 891 129.66      
23 A 854 830 84.28      
24 A 788 766 9.69      
25 A 723 703 7.23      
26 A 555 540 4.61      
27 A 537 522 0.29      
28 A 409 397 7.69      
29 A 376 365 19.28      
30 A 316 307 13.46      
31 A 283 276 14.11      
32 A 228 222 0.33      
33 A 82 80 1.83      

Unscaled Zero Point Vibrational Energy (zpe) 23939.6 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 23276.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CCD/3-21G
ABC
0.15554 0.11526 0.07062

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.040 1.388 -0.072
C2 1.489 -1.152 -0.181
C3 0.658 0.011 0.400
C4 -0.848 -0.186 0.060
O5 -1.516 0.998 -0.117
O6 -1.382 -1.287 -0.012
H7 1.341 1.359 -1.053
H8 1.788 1.792 0.497
H9 1.044 -2.102 0.136
H10 1.467 -1.113 -1.280
H11 0.736 0.016 1.497
H12 2.532 -1.098 0.159
H13 -0.798 1.704 -0.091

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.58111.50422.46162.58563.60821.02681.02363.49582.80962.10672.90831.8652
C22.58111.54302.54043.69472.87852.66273.03621.09571.09982.17861.09793.6595
C31.50421.54301.55642.44162.45212.09652.11182.16462.17691.10062.19122.2854
C42.46162.54041.55641.36991.22522.90213.32502.69432.83092.14873.50241.8961
O52.58563.69472.44161.36992.29043.02833.45294.02783.83442.93894.56601.0069
O63.60822.87852.45211.22522.29043.93694.44822.56353.12242.90843.92153.0475
H71.02682.66272.09652.90213.02833.93691.67093.67202.48612.94592.98772.3712
H81.02363.03622.11183.32503.45294.44821.67093.98143.42112.29443.00412.6537
H93.49581.09572.16462.69434.02782.56353.67203.98141.77752.53661.79454.2342
H102.80961.09982.17692.83093.83443.12242.48613.42111.77753.08551.78973.8050
H112.10672.17861.10062.14872.93892.90842.94592.29442.53663.08552.50162.7792
H122.90831.09792.19123.50244.56603.92152.98773.00411.79451.78972.50164.3589
H131.86523.65952.28541.89611.00693.04752.37122.65374.23423.80502.77924.3589

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.776 N1 C3 C4 107.068
N1 C3 H11 106.929 C2 C3 C4 110.097
C2 C3 H11 109.864 C3 N1 H7 110.435
C3 N1 H8 111.910 C3 C2 H9 109.060
C3 C2 H10 109.781 C3 C2 H12 111.013
C3 C4 O5 112.944 C3 C4 O6 123.219
C4 C3 H11 106.676 C4 O5 H13 104.801
O5 C4 O6 123.819 H7 N1 H8 109.154
H9 C2 H10 108.114 H9 C2 H12 109.778
H10 C2 H12 109.044
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability