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: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-303.859713
Energy at 298.15K-303.865124
HF Energy-303.859713
Nuclear repulsion energy176.455365
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' 3472 3424 22.77      
2 A' 3419 3372 28.18      
3 A' 2966 2925 22.88      
4 A' 1684 1661 181.11      
5 A' 1485 1465 13.20      
6 A' 1425 1405 30.34      
7 A' 1327 1309 117.30      
8 A' 1269 1251 29.62      
9 A' 1099 1084 125.22      
10 A' 1024 1009 201.03      
11 A' 843 832 42.28      
12 A' 615 607 11.34      
13 A' 454 448 32.53      
14 A' 275 271 9.46      
15 A" 2995 2954 20.56      
16 A" 1194 1177 3.00      
17 A" 1023 1009 0.99      
18 A" 652 643 174.51      
19 A" 502 495 5.61      
20 A" 294 290 102.55      
21 A" 55 54 26.14      

Unscaled Zero Point Vibrational Energy (zpe) 14035.6 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 13841.9 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/6-31G
ABC
0.34181 0.13155 0.09673

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.625 -0.857 0.000
C2 0.000 0.519 0.000
O3 -0.936 1.530 0.000
O4 1.232 0.715 0.000
O5 0.392 -1.877 0.000
H6 -1.276 -0.954 0.890
H7 -1.276 -0.954 -0.890
H8 1.272 -1.412 0.000
H9 -0.476 2.410 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7 H8 H9
C11.51142.40702.43361.44041.10741.10741.97673.2711
C21.51141.37751.24802.42812.14292.14292.31271.9506
O32.40701.37752.31633.65652.66052.66053.67850.9936
O42.43361.24802.31632.72543.14213.14212.12802.4071
O51.44042.42813.65652.72542.10412.10410.99554.3749
H61.10742.14292.66053.14212.10411.78102.73793.5713
H71.10742.14292.66053.14212.10411.78102.73793.5713
H81.97672.31273.67852.12800.99552.73792.73794.2038
H93.27111.95060.99362.40714.37493.57133.57134.2038

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 112.770 C1 C2 O4 123.473
C1 O5 H8 107.066 C2 C1 O5 110.667
C2 C1 H6 108.842 C2 C1 H7 108.842
C2 O3 H9 109.647 O3 C2 O4 123.757
O5 C1 H6 110.670 O5 C1 H7 110.670
H6 C1 H7 107.052
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 C -0.085      
2 C 0.382      
3 O -0.501      
4 O -0.382      
5 O -0.576      
6 H 0.198      
7 H 0.198      
8 H 0.374      
9 H 0.390      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.104 2.415 0.000 2.655
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.848 -0.424 0.000
y -0.424 -29.212 0.000
z 0.000 0.000 -28.353
Traceless
 xyz
x -2.066 -0.424 0.000
y -0.424 0.388 0.000
z 0.000 0.000 1.677
Polar
3z2-r23.354
x2-y2-1.636
xy-0.424
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.473 -0.216 0.000
y -0.216 5.518 0.000
z 0.000 0.000 2.686


<r2> (average value of r2) Å2
<r2> 114.483
(<r2>)1/2 10.700