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

using model chemistry: CISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-322.266232
Energy at 298.15K-322.275798
Nuclear repulsion energy247.951727
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 CISD/6-31G
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 3754 3520 11.92      
2 A 3643 3416 35.75      
3 A 3635 3409 150.70      
4 A 3234 3033 7.37      
5 A 3194 2996 30.01      
6 A 3131 2936 10.65      
7 A 3121 2927 16.15      
8 A 1853 1737 236.11      
9 A 1790 1678 54.67      
10 A 1600 1500 10.21      
11 A 1593 1494 3.45      
12 A 1519 1424 10.15      
13 A 1472 1381 8.78      
14 A 1421 1333 236.64      
15 A 1387 1301 228.95      
16 A 1310 1229 12.97      
17 A 1274 1195 8.69      
18 A 1215 1140 18.21      
19 A 1128 1058 48.66      
20 A 1080 1013 0.63      
21 A 989 927 45.35      
22 A 869 815 169.12      
23 A 831 780 220.64      
24 A 829 778 5.62      
25 A 747 700 12.59      
26 A 571 535 8.24      
27 A 554 520 2.33      
28 A 425 398 3.82      
29 A 368 345 9.67      
30 A 293 274 11.46      
31 A 289 271 16.24      
32 A 241 226 0.38      
33 A 54 51 0.97      

Unscaled Zero Point Vibrational Energy (zpe) 24705.8 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 23169.1 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 CISD/6-31G
ABC
0.15909 0.11342 0.07092

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.101 1.338 -0.011
C2 1.465 -1.158 -0.233
C3 0.651 -0.011 0.386
C4 -0.847 -0.162 0.060
O5 -1.501 1.006 -0.189
O6 -1.421 -1.245 0.059
H7 1.489 1.385 -0.943
H8 1.701 1.796 0.657
H9 1.052 -2.122 0.065
H10 1.434 -1.100 -1.325
H11 0.721 -0.072 1.477
H12 2.507 -1.097 0.090
H13 -0.854 1.740 -0.180

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.53291.47662.46002.62943.61111.01041.00753.46122.78992.08472.81362.0036
C22.53291.53712.53493.67272.90212.64053.09471.08971.09452.15851.09253.7132
C31.47661.53711.54042.44882.43352.10102.10772.17232.17391.09552.17072.3776
C42.46002.53491.54041.36211.22582.97543.26872.72892.82852.11573.48221.9175
O52.62943.67272.44881.36212.26683.10633.40504.04573.78692.97964.53520.9783
O63.61112.90212.43351.22582.26684.04794.39942.62343.17582.82433.93083.0484
H71.01042.64052.10102.97543.10634.04791.66503.67442.51462.92672.87442.4896
H81.00753.09472.10773.26873.40504.39941.66504.01523.51952.26333.05612.6895
H93.46121.08972.17232.72894.04572.62343.67444.01521.76712.51131.78014.3139
H102.78991.09452.17392.82853.78693.17582.51463.51951.76713.06901.77643.8230
H112.08472.15851.09552.11572.97962.82432.92672.26332.51133.06902.48282.9175
H122.81361.09252.17073.48224.53523.93082.87443.05611.78011.77642.48284.4071
H132.00363.71322.37761.91750.97833.04842.48962.68954.31393.82302.91754.4071

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 114.368 N1 C3 C4 109.234
N1 C3 H11 107.366 C2 C3 C4 110.915
C2 C3 H11 108.999 C3 N1 H7 113.988
C3 N1 H8 114.783 C3 C2 H9 110.423
C3 C2 H10 110.267 C3 C2 H12 110.132
C3 C4 O5 114.931 C3 C4 O6 122.815
C4 C3 H11 105.526 C4 O5 H13 108.930
O5 C4 O6 122.226 H7 N1 H8 111.205
H9 C2 H10 108.008 H9 C2 H12 109.324
H10 C2 H12 108.637
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability