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 HOCH2COOH (Hydroxyacetic acid)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-302.485210
Energy at 298.15K-302.490856
HF Energy-302.485210
Nuclear repulsion energy178.092351
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 B3PW91/3-21G*
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 3375 30.60      
2 A' 3425 3286 38.23      
3 A' 3032 2909 21.40      
4 A' 1774 1702 160.14      
5 A' 1547 1484 13.78      
6 A' 1484 1424 51.94      
7 A' 1387 1330 105.52      
8 A' 1321 1267 39.05      
9 A' 1133 1087 183.89      
10 A' 1059 1016 147.31      
11 A' 846 812 44.70      
12 A' 641 615 16.39      
13 A' 465 446 32.34      
14 A' 268 257 10.84      
15 A" 3054 2930 24.40      
16 A" 1236 1185 2.83      
17 A" 1069 1026 2.09      
18 A" 668 641 175.56      
19 A" 522 501 10.04      
20 A" 368 353 94.62      
21 A" 99 95 13.36      

Unscaled Zero Point Vibrational Energy (zpe) 14456.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 13869.4 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 B3PW91/3-21G*
ABC
0.34773 0.13454 0.09880

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.628 -0.858 0.000
C2 0.000 0.516 0.000
O3 -0.930 1.511 0.000
O4 1.216 0.701 0.000
O5 0.405 -1.854 0.000
H6 -1.275 -0.936 0.885
H7 -1.275 -0.936 -0.885
H8 1.260 -1.335 0.000
H9 -0.472 2.395 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7 H8 H9
C11.51112.38802.41451.43521.09971.09971.94723.2564
C21.51111.36131.22952.40502.12632.12632.23981.9366
O32.38801.36132.29283.62022.62532.62533.59100.9952
O42.41451.22952.29282.68093.10983.10982.03732.3906
O51.43522.40503.62022.68092.10982.10980.99974.3384
H61.09972.12632.62533.10982.10981.77082.71493.5390
H71.09972.12632.62533.10982.10981.77082.71493.5390
H81.94722.23983.59102.03730.99972.71492.71494.1125
H93.25641.93660.99522.39064.33843.53903.53904.1125

picture of Hydroxyacetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 112.375 C1 C2 O4 123.204
C1 O5 H8 104.785 C2 C1 O5 109.401
C2 C1 H6 108.023 C2 C1 H7 108.023
C2 O3 H9 109.550 O3 C2 O4 124.420
O5 C1 H6 111.992 O5 C1 H7 111.992
H6 C1 H7 107.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.212      
2 C 0.583      
3 O -0.561      
4 O -0.482      
5 O -0.575      
6 H 0.247      
7 H 0.247      
8 H 0.362      
9 H 0.389      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.048 2.592 0.000 2.796
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.334 -0.155 0.000
y -0.155 -28.493 0.000
z 0.000 0.000 -27.799
Traceless
 xyz
x -2.188 -0.155 0.000
y -0.155 0.574 0.000
z 0.000 0.000 1.614
Polar
3z2-r23.228
x2-y2-1.841
xy-0.155
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.799 -0.164 0.000
y -0.164 4.737 0.000
z 0.000 0.000 2.352


<r2> (average value of r2) Å2
<r2> 112.070
(<r2>)1/2 10.586