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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-322.353365
Energy at 298.15K-322.363249
Nuclear repulsion energy243.559553
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 3629 3448 7.33      
2 A 3515 3339 1.91      
3 A 3144 2987 8.72      
4 A 3124 2968 20.81      
5 A 3082 2929 591.52      
6 A 3062 2909 8.47      
7 A 3045 2893 121.01      
8 A 1741 1654 20.19      
9 A 1731 1644 261.44      
10 A 1582 1503 2.27      
11 A 1548 1471 8.76      
12 A 1472 1399 214.75      
13 A 1456 1383 45.83      
14 A 1407 1337 3.71      
15 A 1355 1288 4.31      
16 A 1315 1250 10.06      
17 A 1237 1176 114.00      
18 A 1181 1122 20.47      
19 A 1099 1044 14.03      
20 A 1041 989 64.73      
21 A 1013 962 126.95      
22 A 973 925 9.47      
23 A 931 884 37.50      
24 A 870 826 99.69      
25 A 804 764 10.15      
26 A 681 647 7.77      
27 A 563 534 3.33      
28 A 495 470 8.87      
29 A 412 391 12.83      
30 A 343 326 5.13      
31 A 293 278 7.49      
32 A 209 199 6.70      
33 A 91 86 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 24220.3 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 23011.7 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
0.23031 0.08189 0.06462

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 1.939 0.559 0.125
C2 1.353 -0.726 -0.376
C3 0.005 -1.009 0.328
C4 -1.086 0.036 0.031
O5 -0.649 1.349 -0.027
O6 -2.288 -0.262 -0.120
H7 2.649 0.947 -0.493
H8 2.301 0.484 1.076
H9 2.030 -1.584 -0.237
H10 1.186 -0.607 -1.455
H11 -0.391 -1.982 0.014
H12 0.160 -1.055 1.419
H13 0.356 1.381 0.077

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.49842.49763.07062.70984.31281.01861.02012.17522.10303.44942.72771.7846
C21.49841.54682.58722.90433.67972.11982.11431.10181.09832.18442.17992.3751
C32.49761.54681.53912.47222.45273.38982.83892.18022.17571.09721.10292.4286
C43.07062.58721.53911.38491.24803.87963.57233.52222.78922.13472.16051.9722
O52.70982.90432.47221.38492.30023.35453.26593.97803.03793.34162.91941.0104
O64.31283.67972.45271.24802.30025.09674.80064.51803.73772.56462.99813.1192
H71.01862.11983.38983.87963.35455.09671.67262.61832.34124.25223.72262.4025
H81.02012.11432.83893.57233.26594.80061.67262.46442.97283.80242.65862.3637
H92.17521.10182.18023.52223.97804.51802.61832.46441.77502.46682.55353.4200
H102.10301.09832.17572.78923.03793.73772.34122.97281.77502.55623.08382.6436
H113.44942.18441.09722.13473.34162.56464.25223.80242.46682.55621.77183.4463
H122.72772.17991.10292.16052.91942.99813.72262.65862.55353.08381.77182.7881
H131.78462.37512.42861.97221.01043.11922.40252.36373.42002.64363.44632.7881

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 110.191 N1 C2 H9 112.659
N1 C2 H10 107.158 C2 N1 H7 113.363
C2 N1 H8 112.794 C2 C3 C4 113.939
C2 C3 H11 110.255 C2 C3 H12 109.571
C3 C2 H9 109.655 C3 C2 H10 109.512
C3 C4 O5 115.349 C3 C4 O6 122.949
C4 C3 H11 106.949 C4 C3 H12 108.600
C4 O5 H13 109.855 O5 C4 O6 121.683
H7 N1 H8 110.254 H9 C2 H10 107.567
H11 C3 H12 107.287
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability