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

using model chemistry: MP2=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-322.880882
Energy at 298.15K-322.890780
HF Energy-321.889053
Nuclear repulsion energy247.240724
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/6-31+G**
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 3678 3454 13.99      
2 A 3573 3356 1.41      
3 A 3324 3122 793.36      
4 A 3216 3021 4.66      
5 A 3187 2994 16.68      
6 A 3121 2932 5.89      
7 A 3113 2924 48.58      
8 A 1820 1710 369.33      
9 A 1683 1580 38.82      
10 A 1561 1466 2.81      
11 A 1509 1417 9.13      
12 A 1491 1400 269.42      
13 A 1447 1359 10.55      
14 A 1401 1316 4.66      
15 A 1340 1259 4.44      
16 A 1319 1238 15.48      
17 A 1268 1190 82.17      
18 A 1169 1098 9.64      
19 A 1112 1044 7.01      
20 A 1044 980 14.88      
21 A 1016 954 104.52      
22 A 979 920 22.02      
23 A 939 882 25.36      
24 A 891 837 61.25      
25 A 828 778 11.52      
26 A 701 658 7.63      
27 A 575 540 3.07      
28 A 500 469 9.41      
29 A 409 385 13.75      
30 A 338 317 6.70      
31 A 279 262 8.44      
32 A 207 194 6.05      
33 A 88 83 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 24562.3 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 23068.9 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/6-31+G**
ABC
0.23890 0.08380 0.06636

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.911 0.567 0.125
C2 1.348 -0.701 -0.373
C3 0.018 -0.983 0.321
C4 -1.077 0.035 0.030
O5 -0.678 1.323 -0.031
O6 -2.245 -0.281 -0.115
H7 2.666 0.894 -0.467
H8 2.292 0.449 1.059
H9 2.020 -1.550 -0.230
H10 1.186 -0.588 -1.445
H11 -0.367 -1.957 0.029
H12 0.171 -1.007 1.404
H13 0.308 1.350 0.075

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47372.45353.03592.70164.24831.01381.01512.14882.07943.40062.67191.7844
C21.47371.52582.56542.88403.62632.07132.06511.09241.08982.16282.15302.3426
C32.45351.52581.52332.43462.40963.33952.78672.15202.15361.08761.09382.3637
C43.03592.56541.52331.34981.21913.87183.54713.48842.77182.11482.12911.9104
O52.70162.88402.43461.34982.24453.39933.28263.94633.02103.29552.86590.9925
O64.24833.62632.40961.21912.24455.06194.74354.45123.69262.52122.94503.0362
H71.01382.07133.33953.87183.39935.06191.63202.53892.31164.19163.65222.4617
H81.01512.06512.78673.54713.28264.74351.63202.39392.92703.73122.59642.3905
H92.14881.09242.15203.48843.94634.45122.53892.39391.75982.43482.52603.3812
H102.07941.08982.15362.77183.02103.69262.31162.92701.75982.54073.05312.6150
H113.40062.16281.08762.11483.29552.52124.19163.73122.43482.54071.75573.3755
H122.67192.15301.09382.12912.86592.94503.65222.59642.52603.05311.75572.7096
H131.78442.34262.36371.91040.99253.03622.46172.39053.38122.61503.37552.7096

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 109.753 N1 C2 H9 112.890
N1 C2 H10 107.472 C2 N1 H7 111.405
C2 N1 H8 110.802 C2 C3 C4 114.567
C2 C3 H11 110.580 C2 C3 H12 109.444
C3 C2 H9 109.440 C3 C2 H10 109.717
C3 C4 O5 115.719 C3 C4 O6 122.564
C4 C3 H11 107.005 C4 C3 H12 107.755
C4 O5 H13 108.330 O5 C4 O6 121.702
H7 N1 H8 107.100 H9 C2 H10 107.496
H11 C3 H12 107.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability