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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-322.345964
Energy at 298.15K-322.355846
HF Energy-321.706828
Nuclear repulsion energy243.519969
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 MP2/6-31G
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 3472 7.28      
2 A 3514 3362 1.89      
3 A 3143 3008 8.78      
4 A 3123 2988 20.91      
5 A 3083 2950 592.01      
6 A 3061 2929 8.53      
7 A 3045 2913 119.40      
8 A 1741 1666 20.73      
9 A 1730 1656 260.62      
10 A 1582 1513 2.25      
11 A 1548 1481 8.73      
12 A 1472 1409 214.89      
13 A 1456 1393 45.77      
14 A 1407 1346 3.72      
15 A 1355 1297 4.30      
16 A 1315 1258 10.02      
17 A 1237 1184 113.86      
18 A 1181 1130 20.59      
19 A 1099 1051 14.07      
20 A 1040 995 62.72      
21 A 1012 968 128.88      
22 A 973 931 9.64      
23 A 931 890 37.64      
24 A 869 832 99.29      
25 A 804 769 10.11      
26 A 681 651 7.79      
27 A 562 538 3.34      
28 A 495 473 8.86      
29 A 412 394 12.81      
30 A 343 328 5.14      
31 A 292 280 7.46      
32 A 209 200 6.71      
33 A 91 87 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 24217.3 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 23171.2 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 MP2/6-31G
ABC
0.23023 0.08186 0.06460

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

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 -0.494
H8 2.302 0.484 1.076
H9 2.031 -1.584 -0.236
H10 1.186 -0.608 -1.455
H11 -0.391 -1.983 0.013
H12 0.160 -1.055 1.419
H13 0.355 1.382 0.077

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.49872.49823.07132.71044.31351.01871.02022.17552.10333.45002.72871.7852
C21.49871.54712.58782.90503.68032.11992.11451.10191.09842.18462.18032.3759
C32.49821.54711.53932.47262.45303.39022.84002.18042.17601.09731.10302.4291
C43.07132.58781.53931.38511.24823.88003.57363.52282.79012.13502.16081.9724
O52.71042.90502.47261.38512.30053.35513.26713.97883.03923.34212.91991.0105
O64.31353.68032.45301.24822.30055.09724.80204.51873.73862.56492.99843.1195
H71.01872.11993.39023.88003.35515.09721.67262.61872.34104.25253.72362.4031
H81.02022.11452.84003.57363.26714.80201.67262.46422.97313.80362.66032.3647
H92.17551.10192.18043.52283.97884.51872.61872.46421.77532.46712.55353.4208
H102.10331.09842.17602.79013.03923.73862.34102.97311.77532.55623.08432.6448
H113.45002.18461.09732.13503.34212.56494.25253.80362.46712.55621.77203.4468
H122.72872.18031.10302.16082.91992.99843.72362.66032.55353.08431.77202.7887
H131.78522.37592.42911.97241.01053.11952.40312.36473.42082.64483.44682.7887

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 110.203 N1 C2 H9 112.656
N1 C2 H10 107.156 C2 N1 H7 113.344
C2 N1 H8 112.789 C2 C3 C4 113.948
C2 C3 H11 110.248 C2 C3 H12 109.574
C3 C2 H9 109.646 C3 C2 H10 109.511
C3 C4 O5 115.353 C3 C4 O6 122.946
C4 C3 H11 106.946 C4 C3 H12 108.596
C4 O5 H13 109.857 O5 C4 O6 121.682
H7 N1 H8 110.246 H9 C2 H10 107.570
H11 C3 H12 107.289
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability