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All results from a given calculation for NH2CH2CH2COOH (β–alanine)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-322.792810
Energy at 298.15K-322.802735
HF Energy-321.858849
Nuclear repulsion energy247.138138
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=FULL/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 3624 3415 9.35      
2 A 3525 3321 2.27      
3 A 3275 3085 680.06      
4 A 3193 3008 4.80      
5 A 3165 2982 16.71      
6 A 3102 2923 5.49      
7 A 3088 2910 52.56      
8 A 1864 1756 294.02      
9 A 1714 1615 38.12      
10 A 1576 1485 4.57      
11 A 1528 1440 23.43      
12 A 1524 1436 293.97      
13 A 1457 1373 8.92      
14 A 1409 1328 5.80      
15 A 1356 1277 3.40      
16 A 1330 1253 15.39      
17 A 1286 1211 69.32      
18 A 1180 1112 7.25      
19 A 1121 1056 4.72      
20 A 1064 1002 16.62      
21 A 1017 958 78.72      
22 A 979 922 53.57      
23 A 943 888 27.63      
24 A 899 847 53.76      
25 A 833 785 12.49      
26 A 706 665 9.52      
27 A 583 549 3.41      
28 A 501 472 9.84      
29 A 413 389 15.56      
30 A 341 321 8.26      
31 A 293 276 7.68      
32 A 211 198 4.20      
33 A 90 85 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 24594.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 23172.6 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=FULL/6-31G*
ABC
0.23955 0.08356 0.06633

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.916 0.564 0.135
C2 1.346 -0.693 -0.381
C3 0.020 -0.980 0.319
C4 -1.080 0.037 0.029
O5 -0.683 1.322 -0.039
O6 -2.245 -0.285 -0.107
H7 2.690 0.879 -0.446
H8 2.288 0.421 1.073
H9 2.022 -1.550 -0.263
H10 1.174 -0.560 -1.454
H11 -0.368 -1.958 0.028
H12 0.180 -1.008 1.405
H13 0.309 1.351 0.076

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47392.45143.04312.71274.25311.01841.01932.15442.08303.40402.66401.7902
C21.47391.52622.56602.88043.62422.06982.06001.09781.09412.16902.15612.3375
C32.45141.52621.52522.43352.40703.34202.76982.16082.15581.09201.09822.3611
C43.04312.56601.52521.34711.21653.89213.54623.49592.76292.11812.13781.9124
O52.71272.88042.43351.34712.24223.42683.29793.95192.99903.29632.87420.9989
O64.25313.62422.40701.21652.24225.08204.73654.45273.68472.51802.94743.0383
H71.01842.06983.34203.89213.42685.08201.63712.52652.32104.19853.64552.4835
H81.01932.06002.76983.54623.29794.73651.63712.39622.93053.71532.56792.4037
H92.15441.09782.16083.49593.95194.45272.52652.39621.76522.44122.54303.3864
H102.08301.09412.15582.76292.99903.68472.32102.93051.76522.55463.05932.5963
H113.40402.16901.09202.11813.29632.51804.19853.71532.44122.55461.76023.3781
H122.66402.15611.09822.13782.87422.94743.64552.56792.54303.05931.76022.7111
H131.79022.33752.36111.91240.99893.03832.48352.40373.38642.59633.37812.7111

picture of β–alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 109.578 N1 C2 H9 112.990
N1 C2 H10 107.491 C2 N1 H7 110.970
C2 N1 H8 110.090 C2 C3 C4 114.475
C2 C3 H11 110.776 C2 C3 H12 109.399
C3 C2 H9 109.789 C3 C2 H10 109.617
C3 C4 O5 115.681 C3 C4 O6 122.385
C4 C3 H11 106.879 C4 C3 H12 108.048
C4 O5 H13 108.295 O5 C4 O6 121.920
H7 N1 H8 106.909 H9 C2 H10 107.288
H11 C3 H12 106.956
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability