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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-320.692527
Energy at 298.15K-320.702120
HF Energy-320.063231
Nuclear repulsion energy246.960018
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 MP2/3-21G*
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 3540 3368 4.25      
2 A 3434 3267 0.64      
3 A 3190 3034 6.36      
4 A 3161 3007 21.95      
5 A 3111 2959 185.11      
6 A 3109 2957 98.76      
7 A 3088 2938 10.73      
8 A 1763 1677 172.81      
9 A 1747 1662 29.16      
10 A 1600 1522 7.57      
11 A 1594 1516 7.51      
12 A 1486 1414 15.75      
13 A 1441 1371 317.67      
14 A 1422 1353 77.83      
15 A 1369 1303 23.61      
16 A 1270 1208 2.53      
17 A 1213 1154 15.83      
18 A 1157 1101 29.98      
19 A 1089 1036 39.69      
20 A 1060 1008 1.71      
21 A 998 949 117.02      
22 A 970 923 100.29      
23 A 851 810 82.41      
24 A 782 744 6.19      
25 A 718 683 5.90      
26 A 562 534 3.55      
27 A 531 505 0.12      
28 A 413 393 8.68      
29 A 377 359 19.86      
30 A 324 309 14.43      
31 A 281 267 13.50      
32 A 236 224 0.45      
33 A 85 80 2.18      

Unscaled Zero Point Vibrational Energy (zpe) 23984.2 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 22816.2 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 MP2/3-21G*
ABC
0.15463 0.11553 0.07066

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.078 1.357 -0.051
C2 1.448 -1.191 -0.202
C3 0.659 -0.016 0.402
C4 -0.856 -0.162 0.062
O5 -1.463 1.052 -0.143
O6 -1.437 -1.254 0.011
H7 1.403 1.331 -1.023
H8 1.810 1.754 0.542
H9 0.960 -2.125 0.087
H10 1.434 -1.123 -1.296
H11 0.741 -0.032 1.496
H12 2.486 -1.191 0.144
H13 -0.687 1.711 -0.108

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N12.57921.50522.46182.56163.62581.02541.02223.48672.79792.10642.91761.8011
C22.57921.53892.53653.67542.89342.65283.05851.09271.09632.17321.09443.6040
C31.50521.53891.55932.43752.46552.09742.11542.15372.17031.09692.18782.2481
C42.46182.53651.55931.37291.23772.91703.31782.67362.82982.15043.49751.8887
O52.56163.67542.43751.37292.31073.01163.41764.00193.80172.95354.55091.0196
O63.62582.89342.46551.23772.31073.97714.45762.55123.15702.90543.92593.0608
H71.02542.65282.09742.91703.01163.97711.67173.65692.46962.93982.98252.3129
H81.02223.05852.11543.31783.41764.45761.67173.99653.43442.28943.04692.5808
H93.48671.09272.15372.67364.00192.55123.65693.99651.77212.53191.79064.1791
H102.79791.09632.17032.82983.80173.15702.46963.43441.77213.07611.78473.7339
H112.10642.17321.09692.15042.95352.90542.93982.28942.53193.07612.49272.7664
H122.91761.09442.18783.49754.55093.92592.98253.04691.79061.78472.49274.3074
H131.80113.60402.24811.88871.01963.06082.31292.58084.17913.73392.76644.3074

picture of Alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C2 115.825 N1 C3 C4 106.889
N1 C3 H11 107.046 C2 C3 C4 109.909
C2 C3 H11 109.940 C3 N1 H7 110.520
C3 N1 H8 112.234 C3 C2 H9 108.662
C3 C2 H10 109.745 C3 C2 H12 111.243
C3 C4 O5 112.306 C3 C4 O6 123.232
C4 C3 H11 106.814 C4 O5 H13 103.276
O5 C4 O6 124.447 H7 N1 H8 109.451
H9 C2 H10 108.107 H9 C2 H12 109.913
H10 C2 H12 109.114
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability