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

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-323.654571
Energy at 298.15K-323.664413
Nuclear repulsion energy247.959805
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 B3PW91/6-31G(2df,p)
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 3618 3479 9.20      
2 A 3529 3393 1.93      
3 A 3216 3092 762.03      
4 A 3137 3016 6.47      
5 A 3090 2971 19.35      
6 A 3040 2922 5.96      
7 A 3017 2900 64.68      
8 A 1873 1801 376.51      
9 A 1649 1585 27.67      
10 A 1511 1453 139.21      
11 A 1500 1442 97.95      
12 A 1454 1398 7.15      
13 A 1413 1359 12.10      
14 A 1362 1310 11.19      
15 A 1311 1260 5.68      
16 A 1293 1244 28.29      
17 A 1252 1203 55.98      
18 A 1143 1099 6.30      
19 A 1090 1048 5.04      
20 A 1023 984 9.53      
21 A 1004 965 80.93      
22 A 961 924 5.06      
23 A 918 882 21.23      
24 A 869 835 39.98      
25 A 814 783 23.55      
26 A 699 672 9.37      
27 A 578 556 2.42      
28 A 489 470 9.02      
29 A 407 392 11.62      
30 A 330 317 7.57      
31 A 283 272 10.34      
32 A 200 192 4.88      
33 A 90 87 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 24080.7 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 23151.2 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 B3PW91/6-31G(2df,p)
ABC
0.24139 0.08410 0.06654

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p) An error occurred on the server when processing the URL. Please contact the system administrator.

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