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/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-323.428318
Energy at 298.15K-323.438054
Nuclear repulsion energy245.836251
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/aug-cc-pVDZ
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 3497 3476 7.10      
2 A 3407 3386 0.67      
3 A 3064 3045 6.38      
4 A 3025 3006 18.40      
5 A 2969 2951 6.67      
6 A 2957 2939 107.79      
7 A 2931 2913 829.86      
8 A 1757 1746 422.93      
9 A 1582 1572 24.18      
10 A 1461 1452 173.34      
11 A 1440 1432 10.26      
12 A 1387 1378 7.49      
13 A 1350 1342 10.98      
14 A 1303 1295 16.35      
15 A 1256 1248 3.64      
16 A 1235 1227 18.45      
17 A 1195 1187 75.83      
18 A 1102 1095 8.88      
19 A 1050 1044 7.13      
20 A 1017 1011 56.12      
21 A 980 974 20.01      
22 A 928 923 1.55      
23 A 887 882 28.19      
24 A 835 830 39.79      
25 A 785 780 17.07      
26 A 665 661 8.42      
27 A 554 551 1.67      
28 A 475 472 8.98      
29 A 401 398 9.96      
30 A 328 326 5.74      
31 A 286 284 13.36      
32 A 197 196 5.03      
33 A 88 87 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 23196.4 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 23054.9 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/aug-cc-pVDZ
ABC
0.23651 0.08318 0.06558

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.900 0.586 0.144
C2 1.374 -0.707 -0.357
C3 0.010 -1.007 0.282
C4 -1.085 0.037 0.023
O5 -0.667 1.323 -0.055
O6 -2.264 -0.263 -0.083
H7 2.688 0.911 -0.425
H8 2.248 0.489 1.104
H9 2.066 -1.556 -0.174
H10 1.256 -0.610 -1.453
H11 -0.375 -1.978 -0.076
H12 0.123 -1.099 1.383
H13 0.343 1.323 0.048

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.48302.47603.03812.67814.25601.02411.02602.17132.09673.43502.74501.7256
C21.48301.53622.59782.89433.67542.08522.08031.10991.10652.18052.17882.3125
C32.47601.53621.53542.44952.42013.36892.81442.17622.17231.10371.11062.3650
C43.03812.59781.53541.35431.22093.89863.53303.53652.84222.13862.14501.9217
O52.67812.89432.44951.35432.25123.39943.24553.97073.06373.31332.92541.0148
O64.25603.67542.42011.22092.25125.10024.72544.51953.79262.55062.92323.0541
H71.02412.08523.36893.89863.39945.10021.64642.55642.32864.22483.72662.4269
H81.02602.08032.81443.53303.24554.72541.64642.41792.95483.78882.66712.3323
H92.17131.10992.17623.53653.97074.51952.55642.41791.78472.47942.53133.3619
H102.09671.10652.17232.84223.06373.79262.32862.95481.78472.53493.09252.6120
H113.43502.18051.10372.13863.31332.55064.22483.78882.47942.53491.77413.3798
H122.74502.17881.11062.14502.92542.92323.72662.66712.53133.09251.77412.7742
H131.72562.31252.36501.92171.01483.05412.42692.33233.36192.61203.37982.7742

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 110.175 N1 C2 H9 112.946
N1 C2 H10 107.235 C2 N1 H7 111.231
C2 N1 H8 110.701 C2 C3 C4 115.503
C2 C3 H11 110.301 C2 C3 H12 109.767
C3 C2 H9 109.605 C3 C2 H10 109.499
C3 C4 O5 115.776 C3 C4 O6 122.399
C4 C3 H11 107.124 C4 C3 H12 107.232
C4 O5 H13 107.552 O5 C4 O6 121.813
H7 N1 H8 106.849 H9 C2 H10 107.270
H11 C3 H12 106.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.437      
2 C 0.996      
3 C 0.573      
4 C 0.667      
5 O -0.468      
6 O -0.536      
7 H -0.006      
8 H 0.047      
9 H -0.277      
10 H -0.406      
11 H -0.241      
12 H -0.208      
13 H 0.295      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  6.559 -1.269 0.549 6.703
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.171 1.718 -0.268
y 1.718 -38.193 0.089
z -0.268 0.089 -34.341
Traceless
 xyz
x -3.904 1.718 -0.268
y 1.718 -0.936 0.089
z -0.268 0.089 4.841
Polar
3z2-r29.681
x2-y2-1.979
xy1.718
xz-0.268
yz0.089


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.565 0.301 0.121
y 0.301 8.724 -0.037
z 0.121 -0.037 6.891


<r2> (average value of r2) Å2
<r2> 173.807
(<r2>)1/2 13.184