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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-323.020667
Energy at 298.15K-323.030218
Nuclear repulsion energy250.804520
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 MP2/6-31G(2df,p)
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 3655 3452 12.59      
2 A 3556 3359 13.60      
3 A 3531 3335 251.26      
4 A 3225 3046 2.96      
5 A 3197 3020 14.38      
6 A 3113 2941 9.67      
7 A 3106 2933 7.23      
8 A 1867 1763 222.54      
9 A 1672 1579 33.49      
10 A 1525 1441 12.03      
11 A 1517 1433 4.76      
12 A 1446 1366 381.09      
13 A 1423 1344 4.52      
14 A 1409 1331 10.33      
15 A 1338 1263 22.77      
16 A 1260 1190 10.23      
17 A 1231 1163 7.54      
18 A 1178 1112 6.14      
19 A 1121 1059 46.54      
20 A 1031 973 0.87      
21 A 958 905 49.13      
22 A 909 858 69.55      
23 A 869 820 84.16      
24 A 817 772 13.49      
25 A 740 699 8.04      
26 A 567 536 6.19      
27 A 537 507 0.57      
28 A 411 388 5.26      
29 A 361 341 18.06      
30 A 297 281 15.79      
31 A 281 265 15.04      
32 A 238 224 0.89      
33 A 75 71 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 24230.0 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 22885.2 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 MP2/6-31G(2df,p)
ABC
0.16248 0.11682 0.07245

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.066 1.350 -0.046
C2 1.453 -1.147 -0.189
C3 0.643 0.010 0.381
C4 -0.847 -0.164 0.056
O5 -1.491 0.993 -0.136
O6 -1.389 -1.240 0.008
H7 1.361 1.320 -1.017
H8 1.869 1.659 0.488
H9 1.029 -2.095 0.138
H10 1.424 -1.127 -1.281
H11 0.700 -0.009 1.474
H12 2.493 -1.086 0.133
H13 -0.783 1.669 -0.078

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.53101.46892.44202.58323.56951.01561.01283.45052.79112.07232.82971.8763
C22.53101.52222.51333.64002.85032.60422.91601.08901.09252.15111.09093.5973
C31.46891.52221.53572.40632.41512.04632.05742.15342.15911.09542.16462.2357
C42.44202.51331.53571.33791.20602.86913.29972.69362.80572.10493.46671.8391
O52.58323.64002.40631.33792.24063.00323.48173.99523.78202.89794.50260.9806
O63.56952.85032.41511.20602.24063.89524.38762.56773.09632.83353.88772.9733
H71.01562.60422.04632.86913.00323.89521.62463.62082.46232.90072.89762.3666
H81.01282.91602.05743.29973.48174.38761.62463.86263.32992.26312.83742.7117
H93.45051.08902.15342.69363.99522.56773.62083.86261.76252.49881.77874.1830
H102.79111.09252.15912.80573.78203.09632.46233.32991.76253.06011.77313.7596
H112.07232.15111.09542.10492.89792.83352.90072.26312.49883.06012.48542.7250
H122.82971.09092.16463.46674.50263.88772.89762.83741.77871.77312.48544.2862
H131.87633.59732.23571.83910.98062.97332.36662.71174.18303.75962.72504.2862

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.586 N1 C3 C4 108.714
N1 C3 H11 106.924 C2 C3 C4 110.556
C2 C3 H11 109.452 C3 N1 H7 109.539
C3 N1 H8 110.651 C3 C2 H9 110.007
C3 C2 H10 110.244 C3 C2 H12 110.780
C3 C4 O5 113.548 C3 C4 O6 123.047
C4 C3 H11 105.029 C4 O5 H13 103.904
O5 C4 O6 123.384 H7 N1 H8 106.436
H9 C2 H10 107.789 H9 C2 H12 109.360
H10 C2 H12 108.595
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability