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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-322.778412
Energy at 298.15K-322.788323
HF Energy-321.849450
Nuclear repulsion energy247.028869
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 MP3/6-31G*
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 3630 3407 5.65      
2 A 3543 3326 0.22      
3 A 3464 3251 559.34      
4 A 3189 2993 5.62      
5 A 3152 2959 19.86      
6 A 3097 2907 5.86      
7 A 3085 2896 47.68      
8 A 1941 1822 348.33      
9 A 1727 1621 40.07      
10 A 1577 1480 7.85      
11 A 1540 1445 346.39      
12 A 1530 1436 4.96      
13 A 1466 1376 8.52      
14 A 1419 1332 5.90      
15 A 1364 1280 4.19      
16 A 1347 1264 24.78      
17 A 1297 1217 50.73      
18 A 1187 1114 5.66      
19 A 1126 1057 6.01      
20 A 1071 1006 22.59      
21 A 1013 951 36.02      
22 A 972 912 72.11      
23 A 926 869 49.55      
24 A 902 846 54.49      
25 A 842 790 16.23      
26 A 715 671 11.92      
27 A 591 555 4.87      
28 A 502 471 10.28      
29 A 409 383 16.58      
30 A 336 316 9.68      
31 A 286 269 5.73      
32 A 206 194 4.04      
33 A 88 83 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 24768.8 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 23248.0 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 MP3/6-31G*
ABC
0.23960 0.08306 0.06603

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.930 0.568 0.134
C2 1.352 -0.688 -0.381
C3 0.022 -0.976 0.321
C4 -1.085 0.034 0.029
O5 -0.707 1.321 -0.038
O6 -2.237 -0.296 -0.109
H7 2.705 0.873 -0.449
H8 2.306 0.420 1.069
H9 2.023 -1.549 -0.263
H10 1.179 -0.557 -1.454
H11 -0.363 -1.957 0.033
H12 0.180 -0.999 1.408
H13 0.273 1.374 0.076

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.47562.46123.06302.74724.26171.01711.01832.15632.08653.41212.67181.8430
C21.47561.53072.57432.89703.62022.06682.05931.09831.09492.17312.16122.3717
C32.46121.53071.52692.43692.39803.34772.77942.16132.15991.09211.09892.3763
C43.06302.57431.52691.34291.20623.91033.56753.50012.77072.11752.13701.9082
O52.74722.89702.43691.34292.22693.46503.33393.96763.01513.29652.87390.9880
O64.26173.62022.39801.20622.22695.08894.74714.44303.68082.50772.93833.0201
H71.01712.06683.34773.91033.46505.08891.63392.52342.31984.20143.65082.5373
H81.01832.05932.77943.56753.33394.74711.63392.39392.93113.72122.57852.4554
H92.15631.09832.16133.50013.96764.44302.52342.39391.76542.43892.54783.4238
H102.08651.09492.15992.77073.01513.68082.31982.93111.76542.55943.06382.6253
H113.41212.17311.09212.11753.29652.50774.20143.72122.43892.55941.76173.3913
H122.67182.16121.09892.13702.87392.93833.65082.57852.54783.06381.76172.7228
H131.84302.37172.37631.90820.98803.02012.53732.45543.42382.62533.39132.7228

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 109.886 N1 C2 H9 112.991
N1 C2 H10 107.597 C2 N1 H7 110.674
C2 N1 H8 109.968 C2 C3 C4 114.687
C2 C3 H11 110.789 C2 C3 H12 109.448
C3 C2 H9 109.493 C3 C2 H10 109.573
C3 C4 O5 116.089 C3 C4 O6 122.226
C4 C3 H11 106.727 C4 C3 H12 107.834
C4 O5 H13 108.942 O5 C4 O6 121.671
H7 N1 H8 106.783 H9 C2 H10 107.211
H11 C3 H12 107.033
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability