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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-322.831404
Energy at 298.15K-322.841322
HF Energy-321.879105
Nuclear repulsion energy247.419066
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 3681 3447 8.43      
2 A 3579 3352 1.07      
3 A 3356 3143 708.32      
4 A 3221 3017 5.97      
5 A 3189 2987 19.16      
6 A 3128 2929 6.30      
7 A 3112 2915 52.30      
8 A 1860 1742 293.36      
9 A 1690 1583 32.96      
10 A 1569 1469 3.02      
11 A 1519 1423 46.10      
12 A 1517 1421 248.12      
13 A 1456 1363 10.60      
14 A 1406 1317 6.30      
15 A 1351 1265 4.15      
16 A 1325 1241 15.91      
17 A 1283 1201 69.68      
18 A 1174 1099 6.81      
19 A 1118 1047 4.38      
20 A 1056 989 11.97      
21 A 1016 951 89.03      
22 A 979 917 35.88      
23 A 941 881 21.00      
24 A 894 837 53.20      
25 A 830 778 13.09      
26 A 701 657 9.08      
27 A 579 542 3.40      
28 A 498 466 9.90      
29 A 412 386 14.47      
30 A 339 317 7.64      
31 A 285 267 8.45      
32 A 210 196 4.92      
33 A 90 85 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 24680.6 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 23113.4 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
0.23969 0.08386 0.06648

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 1.908 0.566 0.137
C2 1.347 -0.695 -0.379
C3 0.019 -0.985 0.315
C4 -1.078 0.037 0.029
O5 -0.673 1.321 -0.041
O6 -2.246 -0.280 -0.104
H7 2.682 0.879 -0.438
H8 2.274 0.426 1.073
H9 2.023 -1.546 -0.256
H10 1.179 -0.565 -1.449
H11 -0.368 -1.957 0.017
H12 0.175 -1.019 1.397
H13 0.311 1.340 0.073

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47322.45093.03482.69534.24591.01381.01502.15152.07943.40012.66541.7757
C21.47321.52652.56612.87393.62712.06482.05521.09371.09062.16582.15292.3274
C32.45091.52651.52662.43362.40853.33702.76592.15802.15251.08801.09422.3556
C43.03482.56611.52661.34771.21703.88183.53233.49352.76422.11742.13511.9050
O52.69532.87392.43361.34772.24483.40783.27503.94142.99493.29282.87420.9911
O64.24593.62712.40851.21702.24485.07344.72334.45483.69012.52092.94293.0319
H71.01382.06483.33703.88183.40785.07341.62992.51982.31634.18973.64112.4689
H81.01502.05522.76593.53233.27504.72331.62992.39172.92243.71132.56842.3849
H92.15151.09372.15803.49353.94144.45482.51982.39171.75972.44082.53523.3714
H102.07941.09062.15252.76422.99493.69012.31632.92241.75972.54533.05202.5875
H113.40012.16581.08802.11743.29282.52094.18973.71132.44082.54531.75563.3667
H122.66542.15291.09422.13512.87422.94293.64112.56842.53523.05201.75562.7085
H131.77572.32742.35561.90500.99113.03192.46892.38493.37142.58753.36672.7085

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 109.565 N1 C2 H9 113.056
N1 C2 H10 107.458 C2 N1 H7 110.885
C2 N1 H8 110.007 C2 C3 C4 114.383
C2 C3 H11 110.752 C2 C3 H12 109.358
C3 C2 H9 109.786 C3 C2 H10 109.542
C3 C4 O5 115.559 C3 C4 O6 122.364
C4 C3 H11 106.960 C4 C3 H12 107.974
C4 O5 H13 108.108 O5 C4 O6 122.063
H7 N1 H8 106.907 H9 C2 H10 107.342
H11 C3 H12 107.126
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability