return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-322.999823
Energy at 298.15K-323.009777
HF Energy-321.981165
Nuclear repulsion energy247.900052
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/TZVP
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 3634 3445 10.40      
2 A 3537 3353 1.35      
3 A 3297 3125 776.35      
4 A 3183 3018 5.51      
5 A 3151 2987 18.31      
6 A 3090 2929 5.73      
7 A 3083 2922 49.07      
8 A 1823 1728 340.98      
9 A 1655 1569 34.58      
10 A 1535 1455 4.60      
11 A 1505 1426 227.08      
12 A 1481 1404 14.10      
13 A 1448 1372 7.97      
14 A 1390 1318 6.89      
15 A 1335 1265 5.02      
16 A 1311 1243 15.35      
17 A 1257 1192 92.94      
18 A 1165 1104 10.68      
19 A 1102 1045 5.61      
20 A 1040 986 12.08      
21 A 1014 961 101.63      
22 A 976 925 10.85      
23 A 936 888 25.58      
24 A 887 841 54.41      
25 A 828 785 12.15      
26 A 705 668 7.69      
27 A 584 554 2.76      
28 A 496 470 9.56      
29 A 419 397 14.59      
30 A 343 325 5.84      
31 A 286 271 7.62      
32 A 213 202 6.84      
33 A 91 86 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 24399.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 23128.3 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/TZVP
ABC
0.24048 0.08416 0.06681

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.849 0.567 0.140
C2 1.321 -0.703 -0.377
C3 -0.003 -1.012 0.308
C4 -1.067 0.043 0.039
O5 -0.586 1.293 -0.038
O6 -2.235 -0.215 -0.109
H7 2.604 0.912 -0.441
H8 2.219 0.445 1.076
H9 2.002 -1.551 -0.254
H10 1.149 -0.570 -1.446
H11 -0.397 -1.976 -0.006
H12 0.155 -1.055 1.390
H13 0.388 1.239 0.064

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.46982.43962.96472.54714.16631.01281.01392.15972.07343.39672.65771.6100
C21.46981.52172.53592.78103.59942.06392.05811.09421.09092.17012.14582.1993
C32.43961.52171.52262.40252.40683.32522.76522.15032.14401.08821.09482.2976
C42.96472.53591.52261.34141.20563.80273.46873.47042.73672.12822.12731.8836
O52.54712.78102.40251.34142.23623.23753.13453.85082.90873.27492.84610.9808
O64.16633.59942.40681.20562.23624.98004.65574.44503.65602.54772.94373.0046
H71.01282.06393.32523.80273.23754.98001.63362.54222.30744.18793.63552.2962
H81.01392.05812.76523.46873.13454.65571.63362.40812.92163.72492.56982.2371
H92.15971.09422.15033.47043.85084.44502.54222.40811.76372.44902.52173.2385
H102.07341.09092.14402.73672.90873.65602.30742.92161.76372.53793.04402.4764
H113.39672.17011.08822.12823.27492.54774.18793.72492.44902.53791.76183.3106
H122.65772.14581.09482.12732.84612.94373.63552.56982.52173.04401.76182.6594
H131.61002.19932.29761.88360.98083.00462.29622.23713.23852.47643.31062.6594

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 109.266 N1 C2 H9 113.963
N1 C2 H10 107.199 C2 N1 H7 111.136
C2 N1 H8 110.568 C2 C3 C4 112.818
C2 C3 H11 111.431 C2 C3 H12 109.106
C3 C2 H9 109.487 C3 C2 H10 109.182
C3 C4 O5 113.893 C3 C4 O6 123.392
C4 C3 H11 108.052 C4 C3 H12 107.607
C4 O5 H13 107.397 O5 C4 O6 122.709
H7 N1 H8 107.419 H9 C2 H10 107.626
H11 C3 H12 107.627
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability