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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-322.387835
Energy at 298.15K-322.397603
HF Energy-321.764960
Nuclear repulsion energy241.735979
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/SDD
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 3606 3480 7.94      
2 A 3490 3369 2.10      
3 A 3131 3022 14.34      
4 A 3115 3007 26.32      
5 A 3045 2940 323.05      
6 A 3040 2934 63.69      
7 A 3030 2925 427.36      
8 A 1711 1652 29.67      
9 A 1685 1626 298.38      
10 A 1539 1486 5.65      
11 A 1504 1452 19.66      
12 A 1458 1407 201.61      
13 A 1436 1386 35.82      
14 A 1391 1343 6.04      
15 A 1333 1287 5.21      
16 A 1292 1247 7.23      
17 A 1203 1161 111.82      
18 A 1156 1116 45.55      
19 A 1082 1044 25.85      
20 A 1060 1023 145.48      
21 A 1008 973 45.63      
22 A 951 918 8.61      
23 A 919 887 64.60      
24 A 856 827 72.31      
25 A 779 752 10.46      
26 A 660 637 7.75      
27 A 544 525 2.95      
28 A 477 461 7.89      
29 A 406 392 13.30      
30 A 339 327 4.22      
31 A 293 283 7.58      
32 A 201 194 8.02      
33 A 85 82 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 23912.0 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 23082.3 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/SDD
ABC
0.22700 0.08075 0.06370

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.946 0.570 0.128
C2 1.362 -0.737 -0.380
C3 -0.001 -1.026 0.328
C4 -1.099 0.036 0.034
O5 -0.634 1.353 -0.027
O6 -2.312 -0.246 -0.121
H7 2.654 0.959 -0.504
H8 2.337 0.481 1.073
H9 2.050 -1.590 -0.221
H10 1.202 -0.620 -1.465
H11 -0.394 -2.005 0.007
H12 0.154 -1.066 1.424
H13 0.376 1.371 0.085

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.51902.52503.09342.70114.34261.02521.02632.18972.12293.48112.75111.7627
C21.51901.56212.61272.91183.71542.13562.13181.10701.10372.19942.19592.3730
C32.52501.56211.55602.48742.48033.41692.87932.19672.19701.10291.10812.4384
C43.09342.61271.55601.39831.25453.90213.61773.55352.82352.15962.17251.9909
O52.70112.91182.48741.39832.31963.34573.28633.98793.05463.36682.92941.0173
O64.34263.71542.48031.25452.31965.12404.85474.56563.78062.60583.02363.1441
H71.02522.13563.41693.90213.34575.12401.67742.63382.35014.28133.75052.3879
H81.02632.13182.87933.61773.28634.85471.67742.45812.99023.84362.69882.3687
H92.18971.10702.19673.55353.98794.56562.63382.45811.79152.48952.56473.4145
H102.12291.10372.19702.82353.05463.78062.35012.99021.79152.57523.10622.6546
H113.48112.19941.10292.15963.36682.60584.28133.84362.48952.57521.78653.4635
H122.75112.19591.10812.17252.92943.02363.75052.69882.56473.10621.78652.7896
H131.76272.37302.43841.99091.01733.14412.38792.36873.41452.65463.46352.7896

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 110.065 N1 C2 H9 112.036
N1 C2 H10 107.009 C2 N1 H7 112.708
C2 N1 H8 112.313 C2 C3 C4 113.840
C2 C3 H11 110.048 C2 C3 H12 109.469
C3 C2 H9 109.596 C3 C2 H10 109.810
C3 C4 O5 114.592 C3 C4 O6 123.543
C4 C3 H11 107.400 C4 C3 H12 108.084
C4 O5 H13 110.010 O5 C4 O6 121.858
H7 N1 H8 109.695 H9 C2 H10 108.263
H11 C3 H12 107.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability