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

using model chemistry: MP2=FULL/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=FULL/3-21G*
 hartrees
Energy at 0K-320.703135
Energy at 298.15K-320.713113
Nuclear repulsion energy244.757411
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/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 3532 3349 5.21      
2 A 3432 3254 1.77      
3 A 3174 3009 6.22      
4 A 3152 2988 14.84      
5 A 3092 2931 6.18      
6 A 3077 2917 30.59      
7 A 2793 2647 900.84      
8 A 1770 1678 275.02      
9 A 1740 1650 17.42      
10 A 1602 1518 8.31      
11 A 1564 1483 5.19      
12 A 1554 1473 229.47      
13 A 1453 1377 12.38      
14 A 1404 1331 4.00      
15 A 1362 1291 3.62      
16 A 1316 1247 7.37      
17 A 1222 1159 109.18      
18 A 1186 1125 38.29      
19 A 1140 1080 138.58      
20 A 1082 1026 11.49      
21 A 1026 973 13.78      
22 A 977 926 5.48      
23 A 927 879 40.03      
24 A 861 816 45.31      
25 A 791 750 9.38      
26 A 697 661 9.40      
27 A 571 541 3.11      
28 A 493 468 10.84      
29 A 424 402 12.18      
30 A 356 338 6.66      
31 A 328 311 12.59      
32 A 214 203 5.10      
33 A 90 86 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 24200.9 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 22942.4 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/3-21G*
ABC
0.23187 0.08331 0.06571

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.904 0.569 0.144
C2 1.339 -0.729 -0.393
C3 0.001 -1.024 0.323
C4 -1.085 0.047 0.029
O5 -0.609 1.331 -0.042
O6 -2.283 -0.235 -0.104
H7 2.651 0.935 -0.452
H8 2.257 0.444 1.098
H9 2.033 -1.570 -0.272
H10 1.157 -0.580 -1.461
H11 -0.406 -1.985 0.001
H12 0.170 -1.071 1.407
H13 0.417 1.312 0.078

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.51402.48833.03652.63334.27111.02351.02482.18282.11063.44702.70001.6643
C21.51401.54592.57992.85723.66692.12002.10811.09731.09382.18592.17312.2889
C32.48831.54591.55342.46032.45403.38552.80152.18682.17191.09261.09842.3856
C43.03652.57991.55341.37121.23833.86993.53123.52552.76442.14332.17391.9641
O52.63332.85722.46031.37122.29343.30963.20973.93112.96443.32332.91201.0332
O64.27113.66692.45401.23832.29345.08274.74584.52103.71412.56873.00083.1173
H71.02352.12003.38553.86993.30965.08271.67362.58672.35464.25203.69262.3269
H81.02482.10812.80153.53123.20974.74581.67362.44692.96833.76852.59742.2760
H92.18281.09732.18683.52553.93114.52102.58672.44691.77812.48912.55683.3231
H102.11061.09382.17192.76442.96443.71412.35462.96831.77812.56043.07272.5491
H113.44702.18591.09262.14333.32332.56874.25203.76852.48912.56041.77383.3997
H122.70002.17311.09842.17392.91203.00083.69262.59742.55683.07271.77382.7400
H131.66432.28892.38561.96411.03323.11732.32692.27603.32312.54913.39972.7400

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 108.815 N1 C2 H9 112.444
N1 C2 H10 106.960 C2 N1 H7 111.868
C2 N1 H8 110.796 C2 C3 C4 112.698
C2 C3 H11 110.711 C2 C3 H12 109.365
C3 C2 H9 110.503 C3 C2 H10 109.537
C3 C4 O5 114.403 C3 C4 O6 122.650
C4 C3 H11 106.907 C4 C3 H12 108.917
C4 O5 H13 108.733 O5 C4 O6 122.935
H7 N1 H8 109.577 H9 C2 H10 108.491
H11 C3 H12 108.110
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability