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: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-323.381570
Energy at 298.15K-323.391328
Nuclear repulsion energy246.098331
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 PBEPBE/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 3518 3470 5.09      
2 A 3424 3377 0.58      
3 A 3074 3031 6.43      
4 A 3028 2987 21.01      
5 A 2975 2934 8.21      
6 A 2960 2920 205.28      
7 A 2935 2895 689.42      
8 A 1808 1783 348.14      
9 A 1610 1588 26.53      
10 A 1490 1470 196.08      
11 A 1471 1451 23.12      
12 A 1423 1404 6.71      
13 A 1373 1354 12.24      
14 A 1320 1302 13.31      
15 A 1275 1257 2.50      
16 A 1253 1236 25.01      
17 A 1212 1195 70.51      
18 A 1112 1097 5.76      
19 A 1055 1041 8.67      
20 A 1029 1015 68.07      
21 A 994 981 21.15      
22 A 933 921 0.70      
23 A 897 885 27.20      
24 A 843 832 38.03      
25 A 788 778 19.40      
26 A 669 660 9.54      
27 A 557 549 1.92      
28 A 479 472 10.04      
29 A 407 401 11.71      
30 A 333 328 6.46      
31 A 296 292 12.65      
32 A 201 198 4.03      
33 A 91 90 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 23415.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 23095.0 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 PBEPBE/6-31G**
ABC
0.23671 0.08345 0.06576

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.892 0.587 0.149
C2 1.375 -0.706 -0.359
C3 0.012 -1.010 0.280
C4 -1.086 0.042 0.020
O5 -0.661 1.321 -0.059
O6 -2.263 -0.263 -0.078
H7 2.683 0.914 -0.413
H8 2.229 0.483 1.111
H9 2.071 -1.550 -0.188
H10 1.256 -0.603 -1.451
H11 -0.375 -1.976 -0.077
H12 0.130 -1.107 1.377
H13 0.350 1.316 0.048

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.48182.47013.03002.66454.24701.02341.02522.17052.09303.42882.73491.7088
C21.48181.53642.60022.88863.67582.08212.07451.10741.10352.18092.17362.3032
C32.47011.53641.54222.44912.42053.36362.79882.18012.17041.10011.10752.3616
C43.03002.60021.54221.34961.22003.89233.51723.54202.83992.14162.15401.9197
O52.66452.88862.44911.34962.25283.38713.22833.96533.05183.30892.92921.0166
O64.24703.67582.42051.22002.25285.09494.70584.52253.79242.54892.92513.0556
H71.02342.08213.36363.89233.38715.09491.64772.54842.32734.22053.71472.4117
H81.02522.07452.79883.51723.22834.70581.64772.41762.94853.77292.64562.3142
H92.17051.10742.18013.54203.96534.52252.54842.41761.77732.48562.53213.3515
H102.09301.10352.17042.83993.05183.79242.32732.94851.77732.53653.08532.5981
H113.42882.18091.10012.14163.30892.54894.22053.77292.48562.53651.76733.3730
H122.73492.17361.10752.15402.92922.92513.71472.64562.53213.08531.76732.7722
H131.70882.30322.36161.91971.01663.05562.41172.31423.35152.59813.37302.7722

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 109.837 N1 C2 H9 113.127
N1 C2 H10 107.204 C2 N1 H7 111.105
C2 N1 H8 110.354 C2 C3 C4 115.260
C2 C3 H11 110.538 C2 C3 H12 109.527
C3 C2 H9 110.038 C3 C2 H10 109.511
C3 C4 O5 115.593 C3 C4 O6 121.971
C4 C3 H11 107.107 C4 C3 H12 107.632
C4 O5 H13 107.608 O5 C4 O6 122.418
H7 N1 H8 107.082 H9 C2 H10 107.002
H11 C3 H12 106.364
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.629      
2 C -0.136      
3 C -0.320      
4 C 0.526      
5 O -0.470      
6 O -0.434      
7 H 0.273      
8 H 0.270      
9 H 0.124      
10 H 0.151      
11 H 0.155      
12 H 0.145      
13 H 0.344      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.524 -1.132 0.584 6.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.692 1.892 -0.106
y 1.892 -36.848 0.138
z -0.106 0.138 -33.238
Traceless
 xyz
x -2.650 1.892 -0.106
y 1.892 -1.383 0.138
z -0.106 0.138 4.032
Polar
3z2-r28.065
x2-y2-0.845
xy1.892
xz-0.106
yz0.138


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.391 0.456 0.106
y 0.456 6.688 -0.026
z 0.106 -0.026 5.333


<r2> (average value of r2) Å2
<r2> 172.353
(<r2>)1/2 13.128