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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-322.909772
Energy at 298.15K-322.919717
HF Energy-321.935971
Nuclear repulsion energy247.494240
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 MP2/6-311G*
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 3649 3468 7.85      
2 A 3555 3378 0.73      
3 A 3365 3197 574.25      
4 A 3173 3015 6.41      
5 A 3146 2989 18.96      
6 A 3080 2927 7.46      
7 A 3070 2918 51.17      
8 A 1853 1761 310.68      
9 A 1729 1643 47.09      
10 A 1552 1475 17.90      
11 A 1519 1444 290.99      
12 A 1503 1428 4.59      
13 A 1448 1376 6.21      
14 A 1393 1324 6.79      
15 A 1348 1281 5.75      
16 A 1317 1252 10.22      
17 A 1270 1207 83.17      
18 A 1174 1116 10.42      
19 A 1112 1057 5.01      
20 A 1053 1001 19.99      
21 A 1016 965 94.92      
22 A 978 929 34.23      
23 A 941 895 31.36      
24 A 894 849 44.51      
25 A 829 788 14.30      
26 A 706 671 8.59      
27 A 584 555 2.98      
28 A 496 471 8.27      
29 A 413 393 15.71      
30 A 343 326 6.28      
31 A 298 283 5.31      
32 A 211 200 4.15      
33 A 87 83 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 24552.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 23332.1 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 MP2/6-311G*
ABC
0.24067 0.08355 0.06641

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.922 0.545 0.211
C2 1.345 -0.663 -0.406
C3 0.012 -0.996 0.260
C4 -1.089 0.041 0.035
O5 -0.663 1.308 -0.082
O6 -2.255 -0.262 -0.041
H7 2.678 0.912 -0.354
H8 2.306 0.320 1.122
H9 2.014 -1.530 -0.345
H10 1.180 -0.446 -1.464
H11 -0.374 -1.951 -0.101
H12 0.160 -1.098 1.343
H13 0.324 1.310 -0.032

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47402.45483.05762.71064.26201.01291.01432.15032.08373.40542.66221.7877
C21.47401.52702.57162.83193.64072.06382.05521.09671.09342.16922.15682.2524
C32.45481.52701.52882.42462.40153.33562.78192.15862.15421.09131.09782.3449
C43.05762.57161.52881.34151.20783.88573.57593.49842.76252.12092.13771.9001
O52.71062.83192.42461.34152.23713.37523.35293.90972.89533.27162.91520.9882
O64.26203.64072.40151.20782.23715.08094.74354.46353.72272.52862.90653.0210
H71.01292.06383.33563.88573.37525.08091.63372.53042.30694.19193.64192.4090
H81.01432.05522.78193.57593.35294.74351.63372.37872.92353.71932.58212.4982
H92.15031.09672.15863.49843.90974.46352.53042.37871.76742.43652.54393.3191
H102.08371.09342.15422.76252.89533.72272.30692.92351.76742.55653.05732.4225
H113.40542.16921.09132.12093.27162.52864.19193.71932.43652.55651.75963.3352
H122.66222.15681.09782.13772.91522.90653.64192.58212.54393.05731.75962.7779
H131.78772.25242.34491.90010.98823.02102.40902.49823.31912.42253.33522.7779

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 109.754 N1 C2 H9 112.711
N1 C2 H10 107.577 C2 N1 H7 110.801
C2 N1 H8 109.992 C2 C3 C4 114.607
C2 C3 H11 110.786 C2 C3 H12 109.421
C3 C2 H9 109.633 C3 C2 H10 109.476
C3 C4 O5 115.130 C3 C4 O6 122.260
C4 C3 H11 106.902 C4 C3 H12 107.821
C4 O5 H13 108.338 O5 C4 O6 122.608
H7 N1 H8 107.391 H9 C2 H10 107.609
H11 C3 H12 106.985
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability